50 results about "Head-hitting" patented technology

The invention discloses a method for preventing and controlling rockburst by an artificial space defect body. Firstly, one or more pressure relief roadways are excavated in the high stress dangerous area of ​​rockburst, and three boreholes are drilled in the head of the pressure relief roadway. The boreholes are drilled along the centerline of the roadway, and the holes on both sides are drilled obliquely forward at an angle of 30° based on the centerline of the roadway, so that the coal seam can be relieved by deep hole blasting; Drilling, and finally blasting from the head of the roadway to the back of the roadway. The invention changes the stress distribution by creating a large defect space in the high-stress coal body, the stress is far away from the roadway, the coal body around the roadway is destroyed, the energy is greatly released, and the risk of impact is fundamentally reduced.

An iron club head includes a striking plate for striking a golf ball and a body. The body includes an elastically deformable thin wall. An opening is defined in a front side of the body and surrounded by the thin wall. The striking plate is bonded in the opening. The thin wall has a thickness smaller than that of the striking plate. When the iron club head hits a golf ball, a momentum of striking generated as a result of hitting the golf ball causes elastic deformation of the striking plate and the thin wall to increase an overall deformation of the iron club head.

The invention relates to a range hood, which especially relates to an air inlet structure of the range hood. Aiming to the incomplete smoke and oil suction shortcoming of the range hood of the prior art, the invention discloses a range hood which has both the advantages of a top inlet range hood and a side inlet range hood. The invention has the technical scheme that the top-side range hood comprises a panel, a smoke collection cover and a blower; the panel is connected with the smoke collection cover; the panel comprises a lateral panel and a top panel; a lateral air inlet is mounted on the lateral panel; and a top air inlet is mounted on the top panel. The invention has the beneficial effects that the range hood has the shore distance smoke and oil suction effect of the side inlet range hood and effectively solves the upward escaping problem of the residue smoke and oil of the side inlet range hood; the range hood has both the advantages of the top inlet range hood and the side inlet range hood with a more complete smoke and oil suction effect; the range hood is also characterized in the avoidance of head hitting and oil dripping and the beautiful appearance.

A vest can be worn by a visually impaired pet, such as a dog, to help the pet navigate without hurting themselves by bumping into walls or objects. The vest includes plastic tubing with wire woven therein. The tubing is shaped like a halo that surrounds the front and sides of the pet's head. Should the visually impaired pet run into an object or wall, the halo will hit before their head hits and the pet will turn away before injuring themselves. The vest can be worn about their torso with their front legs fitting in leg holes of the vest. The vest can be adjustable to fit a range of pet sizes. The halo can also be adjustable to provide safe navigation of the pet. Typically, the vest is designed for dogs, but other visually impaired pets or animals may benefit by using the vest.

The invention provides an airbag type safety helmet. The airbag type safety helmet comprises a helmet body and a buffering rack arranged in the helmet body, wherein the helmet body is provided with a power supply, a gravity sensor and an airbag groove; an opening of the airbag groove is arranged outward; an airbag is arranged in the airbag groove; an airbag cover is arranged on the airbag groove; an inflation hole of the airbag is connected with a gas generator; the gas generator is connected to the gravity sensor; and the gravity sensor is connected with the power supply. Once a worker falls off, the gravity sensor induces weight loss and then the gas generator is triggered to work to generate a lot of gas to inflate the airbag instantly; and before a head hits the ground, an inflation step is finished by the airbag, so that the head can be really protected and casualty accidents are reduced.

A shock and impact testing device includes a shock and impact module and a control module. The shock and impact module includes a platform, an air cylinder having a rod, an impact head positioned on the platform aligning with the rod, and a lifting structure connected to the platform to drive the platform to rise and then release the platform to allow the platform to fall down freely until the impact head hits the rod. The control module calculates a pressure of the air cylinder and a height difference between the impact head and the rod, and controls the lifting structure to drive the platform to rise to a height difference between the impact head and the rod meets the calculated height difference and adjusting a pressure of the air cylinder to meet the calculated pressure.

The invention discloses a manufacturing technique for stainless steel tubes used for hydraulic pipelines. The manufacturing technique sequentially comprises the following steps: heating for punching and head hitting are performed on the stainless steel tubes; primary acid pickling, grinding and lubricating are performed on the stainless steel tubes; cold-drawn processing is performed on the stainless steel tubes processed; ungrease treatment is performed on the stainless steel tubes; solid solution heat treatment is performed on the stainless steel tubes; straightening and tube cutting are performed on the stainless steel tubes; acid wash passivation treatment is performed on the stainless steel tubes, and eddy current inspection and ultrasonic flaw detection are performed on the stainless steel tubes; after inspection and detection, stenciling and warehousing are performed on qualified stainless steel tubes. The solid solution heat treatment and the acid wash passivation treatment in the manufacturing technique for the stainless steel tubes used for hydraulic pipelines can ensure that the produced stainless steel tubes meets requirements of standard internal and external surface smoothness and corrosion resistance of the hydraulic pipelines, and the like.

The invention discloses a full hydraulic counterblow hammer with a micro-displacement lower hammer head, which comprises a lower hammer head, an upper hammer head, a die holder, a die and a program-controlled full hydraulic power head. The invention is characterized in that balancing hydraulic cylinders are arranged at two bottom sides of the lower hammer head to achieve the micro-displacement of the lower hammer head, and the program-controlled full hydraulic power head drives the upper hammer head to move. The upper and the lower hammer heads hit to each other in a way of non-uniform velocity and unequal travel based on full hydraulic drive and hydraulic linkage. Both the movement velocity and travel of the lower hammer head are smaller than those of the upper hammer head. The counterblow hammer has the advantages of micro-displacement of the lower hammer head, full hydraulic drive, automatic control of hydraulic linkage and high reliability.

A hair cutting device includes a grip, a head disposed external to one end of the grip, the head including a cutting unit that works on hair, and a joint connecting the grip and the head. The joint includes a base connected to one of the grip and the head, and a slide portion connected to the other of the grip and head and held to be slidable within a predetermined area on a slide plane that is a plane intersecting an alignment of the grip and the head. Accordingly, the hair cutting device including the head that has an excellent ability to lessen impact which is made when the head hits the skin and to follow the skin surface is provided.

The invention discloses a car front wall upper plate assembly. The car front wall upper plate assembly is of an opening suspension structure, namely, the bottom of a front baffle plate is suspended and an opening is formed between the bottom of the front baffle plate and the bottom of a rear support plate. Correspondingly, when an adult pedestrian is hit by the front part of a car, the pedestrian body falls toward the car and the pedestrian head hits against the front baffle plate of the car front wall upper plate assembly; as the suspended bottom of the front baffle plate is not restricted by other structures, the front baffle plate is capable of recessing toward the rear support plate under the hitting of the pedestrian head, energy absorption is carried out on the hitting of the pedestrian through the deformation of the front baffle plate due to the recession toward the rear support plate and the damage caused to the pedestrian head can be reduced. Moreover, through a reinforcing plate arranged on the rear support plate, the strength loss generated to the car front wall upper plate assembly by the opening suspension structure can be made up to a certain extent, so that the strength requirement of the car front wall upper plate assembly is considered while the pedestrian safety is ensured.

A method of producing bicycle ratchet bushing is provided, wherein an alloyed fundamental material is applied to the processes of a modeling process and a detailing treatment to form a product of bicycle ratchet bushing. Wherein, when the processes of drilling and tapping a hole of the modeling process are completed, the tapped hole of the workpiece is connected to a screw rod, and the screw rod is clamped by a drawing machine, so that the workpiece can be penetrated through the mold of the drawing machine to proceed with the drawing process. When the drawing process is working, it is not necessary to apply a head-hitting process to the workpiece as the conventional drawing method does, therefore the outer teeth of the ratchet of the workpiece will not be deformed by an external force, and can penetrated into the mold for further drawing process, therefore the whole manufacturing processes can be controlled efficiently.

The invention discloses a badminton training plate and relates to the technical field of badminton. The badminton training plate is used for solving the problem that one person cannot do badminton training. The badminton training plate comprises a bracket, a lining plate and a rebound plate, the bracket is provided with the obliquely arranged lining plate, the angle between the lining plate and the vertical direction is 0 to 45 degrees, and the lower part of the lining plate is close to the trainer; the lining plate is provided with the rebound plate made of a thermoplastic elastomer. According to the badminton training plate, the bracket is provided with the obliquely arranged lining plate, the lining plate is provided with the rebound plate made of the thermoplastic elastomer material, the hit badminton head can rebound to the badminton hitter after the badminton head hits against the rebound plate, and therefore, the badminton hitter can do badminton hitting training through the training plate, and the training plate is simple in structure, convenient to operate and convenient to move and transport.

The invention discloses a full-cover carton sealer comprising a workbench and a conveying device. A hitting mechanism and a folding, pressing mechanism and a sealing mechanism are sequentially arranged on the upper side of the workbench. The conveying device is used for conveying a carton to enable the carton to sequentially pass through the hitting mechanism, the folding and pressing mechanism and the sealing mechanism. The hitting mechanism comprises a guide hook, a hitting head and a partition plate. The guide hook is used for leading in the carton. The partition plate is used for hitting and pressing front opened covers of the led-in carton. The hitting head hits and presses back opened covers of the carton. The folding and pressing mechanism comprises a pressing rod used for hitting and pressing opened covers on one side of the carton and a folding and pressing plate used for folding and pressing opened covers on the other side of the carton. The sealing mechanism is used for sealing the carton with the four sides being folded and pressed. The full-cover carton sealer can seal all covers of the carton and greatly improves the sealing efficiency.

The invention discloses a toy car with a buffer device. The toy car comprises a car body, a base and a device box. The base is fixedly connected with the bottom end of the car body. The bottom end ofthe base is rotationally connected with four wheels. The side wall of the base is fixedly connected with the device box. Through the combination of an ejecting block, a screw rod and an air bag, a sponge and the air bag are pushed out when the car body hits an object, the head part of the car is buffered and protected when the wheels are prevented from continuing advancing, the screw rod can be made to rotate when the car head hits the object, a screw sleeve is driven to move down, the sponge gets rid of the squeezing of a fixing plate and makes contact with the wheels and prevents the wheelsfrom continuing rolling, meanwhile, a first connecting rod and a second connecting rod rotate, a connecting plate and the air bag can be pushed out, through the deformation of the air bag, the hittingenergy of the toy car is counteracted, the damage of the toy car is avoided, and the air bag can be protected to a certain extent and prevented from colliding with a sharp object by means of an elastic film.

The invention discloses a knocking rehabilitation device for traditional Chinese medicine nursing. The device comprises a box body, a gear motor is arranged on the upper portion of the left side facein the box body through a fixing frame, an output shaft of the gear motor and the left end of a screw are connected through a coupling, the right end of a screw and an input shaft of an angle sensor are connected through a coupling, the angle sensor is fixed to the upper portion of the right side face in the box body through the fixing frame, a cam is installed on the screw, and the inner wall ofthe box body is in sliding connection with the side face of a sliding plate. The knocking rehabilitation device for traditional Chinese medicine nursing is simple in structure and low in price, and application and popularization are facilitated; a patient can knock on himself / herself, the labor intensity of medical staff is relieved, and the nursing efficiency of the medical staff is improved; a first spring keeps storing and releasing elastic potential energy, and an elastic hammer head hits the skin of the patient repeatedly; the knocking force is constant, and the nursing effect is improved; the angle of a holding rod is adjustable, and the patient can hit different parts, and the applicability of the knocking rehabilitation device for traditional Chinese medicine nursing is improved.

The invention discloses a medical impact hammer, and belongs to the field of experiment measuring techniques and the field of medical apparatuses. The medical impact hammer comprises an electromagnetic power hammer, a guide sleeve, an electromagnetic coil, a housing, a spring, a handle, an osteotome adapter, a controller, a gear switch and a start-up button, wherein the start-up button is mountedat the position of a thumb, on the handle; the gear switch is mounted at a position adjacent to the housing, of the handle, and comprises three gears including a strong gear, a medium gear and a weakgear; an electromagnetic power hammer body is a cylinder; and a head hitting location is a hemispheroid, and cooperates with the guide sleeve through an air gap. The medical impact hammer disclosed bythe invention adopts an electromagnetic force compression spring for energy storage; and when the electromagnetic force is released, the electromagnetic power hammer is pushed by the spring to implement beating on an osteotome, artificial factors are eliminated, and the controllability and the stability of the knocking force are improved. An impact hammer which cooperates with the osteotome workfor usage and of which the impact force is stable and controllable is provided for surgeries in orthopaedics and dentistry including sinus lift and the like, so that the safety and the validity of theusing of the osteotome in the surgeries are improved, the surgery efficiency is improved, and the medical care risk is reduced.

The invention relates to a lawn mower used for mowing lawns in courtyards, parks, and sides of roads, and other places. The lawn mower has three wheels, and reduces one of four wheels in a conventional four-wheel lawn mower, so turning and back-up are more flexible. The three-wheel lawn mower which has rotation angle in-gears of a grass head hitting flat rod to turn up a single front wheel is a series excited machine electric lawn mower having a chassis anticollision safety brake with a function wave disk. The lawn mower comprises an anticollision protecting device arranged on the front part of a lawn mower chassis, a brake with a function wave disk, the brake being arranged on the middle part of the lawn mower chassis, and a grass blocking pulling device and a grass shatter prevention device controlled by a remote stay cord.

Fall-resistance child-friendly bed comprises cribs or double-deck cribs of different types with fences everywhere except for inlets and outlets; the fall-resistance child-friendly bed further comprises a fencing block which is arranged at the front end of each internal outlet of two ends of the fence outlet and is connected with the fence, the upper end of the fencing block is arranged with a permanent magnet; the tops of four corners of the fence are provided with a folded mosquito net rod grafting hole respectively; the fencing block at the fence outlet is internally provided with a movable fence, two ends of the internal side at the bottom of the movable fence are articulated with the internal side of bed edge by a hinge, two ends at the upper end of the movable fence and two positions corresponding to the permanent magnet fencing block are respectively provided with a corresponding permanent magnet. Compared with existing cribs, the bed has the characteristics that the mosquito net is convenient to be hung so as to prevent children from being bit by mosquitoes, the movable fence prevents the child from falling off the bed and getting the head hit in sleeping process and careless playing, which results in impacting level of intelligence, the opening and closing of the movable fence are convenient and do not influence the speed for getting in and out of the bed, thereby, parents can save time and energy in taking care of the child during sleeping.

An alternator for a vehicle is provided which is equipped with a rectifier. The rectifier includes a positive-side radiator fin in which a positive rectifying device is installed. An output terminal through which dc voltage is outputted has a rectangular head and is fit in a through hole formed in the positive-side radiator fin. Ribs are formed on the positive-side radiator fin across the through hole. The rectangular head of the output terminal is shaped to have two sides and a diagonal line. The diagonal line is longer than an interval between the ribs. The sides are located at a distance away from each other which is smaller than the interval between the ribs. Specifically, the ribs serve as stoppers on which corners of the head hits when excessive torque acts on the output terminal, thereby minimizing deformation of the positive-side radiator fin and undesirable rotation of the output terminal.

The invention discloses a multistage crusher. The multistage crusher comprises a barrel-shaped shell, a feed opening is formed in the upper end of the shell, a discharge opening is formed in the lower end of the shell, the inner wall of the shell is provided with a lining plate, the lining plate is provided with multiple layers of annular partition plates, a crushing cavity only with the inner annular face opened is formed by the two adjacent partition plates and the lining plate in an enclosure mode, and at least one baffle is vertically arranged in each crushing cavity; a central rotating shaft extending up and down is installed in the shell, a rotating shaft sleeve or a hammer disc which coaxially rotates with the central rotating shaft is arranged on the central rotating shaft in a sleeving mode, hammering heads are installed on the rotating shaft sleeve or the hammer disc, each hammering head extends into the corresponding crushing cavity, and the crushing cavity on each layer at least corresponds to one hammering head; the hammering heads hit materials into the crushing cavities, the materials impact with the lining plate, the partition plates and the baffles in the crushing cavities, and meanwhile the materials mutually impact for crushing; the crushed materials enter the crushing cavity on the next layer for another time impacting till the materials are discharged out of the discharge opening. The phenomenon that the materials are in the crushing cavity on the same layer and do not fall into the crushing cavity on the next layer along with movement of the hammering heads is avoided.

The invention provides a head hitting preventing desk for an infant. The infant head hitting preventing desk comprises a desk and desk legs, wherein the desk is connected with the desk legs; alarms are mounted on the desk legs; infrared probes are mounted on the middle parts of four edges and four corners of the desk; a switch and a battery are mounted at the edge side of the left part of the desk; the switch is electrically connected with an electric wire; the electric wire is electrically connected with the alarms and the front infrared probe; the front infrared probe is electrically connected with the left infrared probe, the left upper infrared probe, the rear infrared probe, the right upper infrared probe, the right infrared probe, the right lower infrared probe and the left lower infrared probe in parallel. According to the infant head hitting preventing desk, the infrared probes and the alarms are mounted on the desk or other furniture; when the infrared probes detect that people hit the desk, a warning is sent so as to prevent the head hitting pain caused by carelessness of the infant; if some objects are put aside the desk, the switch at the edge side of the desk can be pressed and the power supply can be switched off. Therefore, a user does not need to worry that the head of the infant is hit and safety is realized.

The invention discloses a head-neck flank damping structure, a safety headrest and a child safety seat. The head-neck flank damping structure comprises a flank supporting skeleton, a flank supportingpiece, a damping mechanism, a protecting cover and an energy absorbing piece; the flank supporting skeleton is connected with a headrest skeleton, the flank supporting piece is connected with the headrest skeleton, and the damping mechanism is arranged on the inner side of the flank supporting skeleton and comprises a frame structure arranged around and a damping groove formed in the frame structure; the protecting cover is arranged outside the flank supporting piece and connected with the flank supporting piece; and the inner side of the damping mechanism is covered with the energy absorbingpiece, a buffering cavity is formed between the protective cover and the flank supporting piece, and the buffering cavity communicates with the damping groove. The head-neck flank damping structure has the advantages that deformation of the energy absorbing piece is larger through forming of the damping groove, and the situation that the head hits a hard plate behind the energy absorbing piece, consequently, buffering is insufficient, and damage is caused is avoided.

A game robot toy comprises a robot toy, a power source, a shoulder counterweight, a shoulder steering gear, a voice player, a elbow steering gear, an arm counterweight, a fist counterweight, a wrist steering gear, a waist counterweight, an ankle steering gear, a sole counterweight, a leg counterweight, a knee steering gear, a hip steering gear, a signal receiver, a controller and a remote control. The controller is used for controlling the shoulder steering gear, the elbow steering gear, the wrist steering gear, the ankle steering gear, the knee steering gear and the hip steering gear to start up and shut down to realize the movement and game playing of the robot toy. The voice player is used for playing the dubbing of the head-hitting game action. According to the technological means, the game robot toy has the beneficial effects that the game robot toy reasonably layouts the body structure and equipment to make sure it has reasonable weight and stable gravity center and it has good fighting game. It has flexible action and smooth movement which increases the interest of fighting game of robot toy, fits the mighty external image of the robot toy and improves the market attractiveness of the robot toy.

The invention relates to a range hood, which especially relates to an air inlet structure of the range hood. Aiming to the incomplete smoke and oil suction shortcoming of the range hood of the prior art, the invention discloses a range hood which has both the advantages of a top inlet range hood and a side inlet range hood. The invention has the technical scheme that the top-side range hood comprises a panel, a smoke collection cover and a blower; the panel is connected with the smoke collection cover; the panel comprises a lateral panel and a top panel; a lateral air inlet is mounted on the lateral panel; and a top air inlet is mounted on the top panel. The invention has the beneficial effects that the range hood has the shore distance smoke and oil suction effect of the side inlet rangehood and effectively solves the upward escaping problem of the residue smoke and oil of the side inlet range hood; the range hood has both the advantages of the top inlet range hood and the side inlet range hood with a more complete smoke and oil suction effect; the range hood is also characterized in the avoidance of head hitting and oil dripping and the beautiful appearance.

The invention discloses a screw blade machine-beating type sunflower head seed removing machine which comprises blade fans, a first filter disc, a second filter disc, an upper cover plate, a material crushing motor, spiral blades, material crushing rods, material scratching plates and a spiral shaft, wherein lower support legs are arranged under the lower part of a bottom plate; a cylinder is arranged in the upper part of the bottom plate; a material filter motor is fixedly mounted in the lower part of the bottom plate through a bolt; a material filter shaft is arranged on the material filter motor; a blade fan seat is arranged on the material filter shaft; the first filter disc is arranged in the upper part of the blade fan seat; the second filter disc is arranged in the upper part of the first filter disc; a first filter hole and a second filter hole are formed on the first filter disc and the second filter disc, respectively; a feed inlet is formed in the side part of the cover plate. The screw blade machine-beating type sunflower head seed removing machine disclosed by the invention can be used for crushing a sunflower head into blocks in certain sizes and can be used for better separating the sunflower head and fruits, so that the waste of the fruits is reduced, and moreover, the crushing efficiency is high and the equipment is simple in structure.

The invention discloses a one-dimensional impact strength testing device, which is used for testing the impact strength of a simulated head falling vertically on the ground. Acceleration sensor and shading partition, and test host. When the shading partition is opened by the light control, the light control switch is triggered to generate two interruption signals, and the acceleration sensor measures the acceleration when the simulation head hits the ground and transmits it to the test host. The test host samples and saves the acceleration data, calculates the acceleration peak value and the head injury judgment (HIC) value, and counts the time difference between two interrupt signals to calculate the simulated head drop height value, and saves and displays these data. The one-dimensional impact strength testing device of the present invention has a relatively high sampling rate and filter corner frequency, can accurately measure acceleration data and calculate head injury evaluation values, and accurately calculate the height corresponding to each impact.