97results about How to "Avoid "slipping" patented technology

The invention discloses a method for controlling the traction of an electric vehicle. A motor is driven by one controller; and the controller is internally provided with a finished vehicle status gain calculator, a vector controller, an error observer and an optimal slip ratio tracker. When a system operates, the finished vehicle status gain calculator analyzes the intention of a driver according to initialized vehicle information and real-time read finished vehicle status information and determines a torque gain curve, a vehicle acceleration curve and a vehicle desired speed; then the vector controller controls the motor to be up to a preset torque; next, the error observer compares the error between an actual value and a calculated value of the speed and adjusts a road condition resistance coefficient; and the optimal slip ratio tracker calculates the real-time slip ratio of the vehicle and adjusts a slip coefficient in a torque equation according to the calculated value so that the vehicle keeps in an optimal slip ratio state. By using the method, the phenomenon of slip is effectively prevented, and the acceleration performance and the side stability of the electric vehicle are improved.

The invention discloses a cut roll crusher and a construction waste roll-in crushing station based on same in the field of the comprehensive resource utilization technology. A plurality of groups of cut-off components which are axially arranged at intervals are arranged on the surfaces of two oppositely arranged rollers of cut roll crusher, the cut-off components comprise a plurality of cut-off knives and a plurality of cut-off teeth evenly distributed on the surfaces of the rollers, the cut-off knives and the cut-off teeth are all arranged on the axial positions of the surface of the same roll, and the plurality of cut-off teeth are arranged between the two adjacent cut-off knives. When being used for rolling-in and crushing construction wastes, the cut roll crusher can achieve the comprehensive action on cut-off crushing, shearing crushing, bending crushing, separation crushing, roll-in crushing, extrusion crushing and the like, so as to facilitate the cut-off of reinforced concrete, prestressed floors, and lintel slabs, and also facilitate the stripping between the prestressed reinforcement and the concrete.

The invention discloses a steel pipe cutting machine for medical equipment, comprising a box body, a fixed block is fixedly connected to the center of the bottom of the inner wall of the box, a second motor is arranged on the top of the fixed block, and the left end and the right end of the second motor are respectively A positive screw and a reverse screw are fixedly connected, and the surfaces of the positive screw and the reverse screw are both covered with screw sleeves, the bottom of the screw sleeve is fixedly connected with a support rod, and the bottom of the support rod is slidably connected with the box. The present invention solves the problem of poor clamping effect of the existing cutting machine for cutting steel pipes for medical equipment. The steel pipe is damaged, which improves the production quality of the steel pipe for medical equipment and reduces the economic loss of the user, so it is worth popularizing.

The invention discloses a wear-resisting antiskid plastic track and a preparation method. The wear-resisting antiskid plastic track sequentially comprises an antiskid wear-resisting layer, a toughness reinforcing layer, a substrate layer and a cement powder stable layer from top to bottom, wherein a figure structure is arranged on the upper surface of the antiskid wear-resisting layer, and the antiskid wear-resisting layer and the toughness reinforcing layer are connected through an adhesive. The preparation method comprises the steps: firstly preparing the antiskid wear-resisting layer, the toughness reinforcing layer and the adhesive respectively; then laying the cement powder stable layer on a soil base layer, laying a self-adhesion SBS modified asphalt layer on the cement powder stable layer, then laying the toughness reinforcing layer on the surface of the asphalt layer, then coating the adhesive on the upper surface of the toughness reinforcing layer and adhering the antiskid wear-resisting layer to obtain the wear-resisting antiskid plastic track. The plastic track not only has better antiskid and wear-resisting performance, but also has better adhering firmness among all the layers; furthermore, the plastic track cannot release toxic gas, is safe and free of pollution and has better practical value.

The invention discloses environmentally-friendly furniture processing cutting device which comprises a base, wherein a working table is fixedly connected with the left side of the top of the base; anelectric telescopic rod is fixedly connected with the left side of the top of the working table; a transverse plate is fixedly connected with the top of the electric telescopic rod; and a support rodis fixedly connected with the bottom of the transverse plate. According to the environmentally-friendly furniture processing cutting device, through the cooperative application of a dust suction cover, a dust suction pipe, a draught fan, a dust discharging pipe, a water adding pipe, a water pump, a water transmission pipe, a water suction pipe, a water tank, a gas pipe, a blowdown pipe, a dust collecting box, a sealing door, a first filter screen, a dust collecting box, a water discharging pipe, a nozzle and a second filter screen, the problem that more dust is generated to pollute the environment when the existing cutting device cuts the furniture material is solved; the environmentally-friendly furniture processing cutting device has the dust collecting advantage and can eliminate dust generated during the cutting process to improve the working environment of a user and improve the practicality of the furniture processing cutting device.

The invention discloses an improved gland type pressure cooker, which belongs to the field of kitchen cooking utensils and is used for solving the technical problems of inconvenience in operating and low using safety existing in the conventional gland type pressure cooker. The gland type pressure cooker disclosed by the invention comprises a cooker body and a cooker cover, wherein the cooker cover is provided with a cover closing locking device; the cover closing locking device comprises an elastic beam and a driving mechanism which can be used for driving the elastic beam to move upwards and downwards; lock catches are arranged at the two ends of the elastic beam, and are rotationally connected to the elastic beam; driving pieces are arranged between the lock catches and the elastic beam, and are used for driving the lock catches to lock the cooker body when the elastic beam moves upwards; and unlocking pieces are arranged between the lock catches and the cooker cover, and are used for separating the lock catches from the cooker body when the elastic beam moves downwards. The embodiment of the invention is mainly applied to gland type pressure cookers and similar products.

The invention discloses a carrying device for an unmanned aerial vehicle, which comprises an unmanned aerial vehicle body, wherein support rods are arranged on the outer side of the unmanned aerial vehicle body; fixing holes are formed on the outer sides of inner cavities of the support rods; inner cavities of the fixing holes are equipped with motors; the surfaces of the motors are movably connected with blades via rotating shafts; flying wings are arranged on the outer side of the unmanned aerial vehicle body; wing grains are arranged on the outer sides of the surfaces of the flying wings; choke holes are formed on the inner sides of the surfaces of the flying wings; and inner cavities of the choke holes are provided with connecting rods. The flying wings, the wing grains, the choke holes, the connecting rods, the movable shafts and the fan blades are matched to exert a flying stabilization effect on the unmanned aerial vehicle during loaded flying, so that the unmanned aerial vehicle has a better effect during operation; and the condition that the unmanned aerial vehicle is unstable during the loaded flying when an air flow in air is unstable is avoided.

The invention discloses a hardware accessory machining drilling machine with a good clamping effect. The hardware accessory machining drilling machine comprises a bottom box. The top of the bottom boxis fixedly connected with a drilling bench. The left side of the bottom of the inner wall of the bottom box is fixedly connected with a supporting plate. The right side of the supporting plate is fixedly connected with a motor. The output end of the motor is fixedly connected with a rotating shaft, and the surface of the rotating shaft is sleeved with a sliding sleeve. Due to the fact that the bottom box, the drilling bench, supporting pillars, the supporting plate, the motor, the rotating shaft, a first slide bar, a spiral groove, the sliding sleeve, a fixing plate, a second slide bar, a baffle, a first sliding block, a carrying rod, a first pressing rod, a pull rod, a pressing block, a second pressing rod, a second sliding block and a sliding groove are matched for use, the problem thatthe clamping effect is poor when an existing hardware accessory machining drilling machine is used for drilling hardware accessories is solved. The hardware accessory machining drilling machine has the advantages of being good in clamping effect; and the hardware accessories cannot waggle when being drilled, and thus the practicability of the hardware accessory machining drilling machine is improved.

The invention discloses an electronic keyboard rack with an adjustable height. The electronic keyboard rack comprises a movable box. The right side of the cavity of the movable box is provided with a forward and reverse motor. The output end of the forward and reverse motor is provided with a screw rod. The surface of the screw rod is provided with a movable screw block. The top of the screw block is provided with a first rotating shaft. The top of the first rotating shaft is provided with a movable rod. One end of the movable rod far from the first rotating shaft is provided with a second rotating shaft. The top of the second rotating shaft is provided with a connection rod. The bottoms of two sides of the connection rod are provided with sliding rods. Two sides of the cavity of the movable box are provided with sliding grooves matched with the sliding rods. The top of the connection rod goes through the movable box and extends to the top of the movable box. Through the mutual cooperation of the sliding rods, the sliding grooves, the screw rod, a controller, the connection rod, the first rotating shaft, the movable screw block, the forward and reverse motor, the movable rod and the second rotating rod, the height of the rack can be adjusted, and a music teacher is more comfortable in using an electronic keyboard.

The invention discloses a hand-held informal advertisement clearing device. The hand-held informal advertisement clearing device comprises a support frame, a small-sized motor arranged at the left side of the support frame, a handle arranged at the rear part of the support frame, a garbage collection groove arranged at the lower part of the support frame, a wire brush roller symmetrically arrangedat the left side and the right side of the support frame, a transmission mechanism arranged at the left side and the right side of the support frame, a water delivery mechanism arranged at the rear part of the support frame, and a scraping-off mechanism arranged at the front part of the water delivery mechanism; the transmission mechanism includes a rotating shaft arranged at the right side of the small-sized motor, and a heat transfer mechanism arranged at the right part of the rotating shaft; the rotating shaft can drive the heat transfer mechanism to rotate; the wire brush roller is arranged on the outside of the rotating shaft in a sleeving manner; the wire brush roller can rotate with the rotating shaft; and wire brush knives are distributed in the circumferential direction of the wire brush roller. According to the hand-held informal advertisement clearing device, pull rods are arranged, and water in water tanks is driven to be sprayed out, and then, through heating wires and air outlets arranged on the wire brush roller, hot air softens solidified glue, so that the removal efficiency of the wire brush roller is improved, and the work efficiency is improved.

The invention discloses an adjustable finger clip blood oxygen tester, which comprises a first fixing plate, a first groove is opened on the right side of the top of the first fixing plate, and a first groove is opened on the left side of the top of the first fixing plate. A fixed block is fixedly connected, and the fixed block is movably connected with a second fixed plate through a rotating shaft. The right side of the surface of the second fixed plate is provided with a second groove, and the left side of the inner cavity of the second groove is provided with Drive gear. The present invention achieves the effect of placing the user's finger and detecting the user by setting the first fixing plate, the first groove and the second fixing plate, and achieves the effect of driving the threaded rod to rotate through the driving gear and the driven gear. The threaded rod and the threaded tube achieve the effect of driving the movement of the splint. Through the splint, the effect of fixing the user's finger is achieved, which can effectively fix the user's finger. During the detection, the finger is not easy to fall off, which ensures the accuracy of the detection. Effect.

The invention discloses a test tube rack used for chemical experiments and used for placing test tubes with different lengths, wherein the test tube rack includes a base. Two sides of the top of the base are each fixedly connected with a stand column, and the top of the base is provided with an insert plate; the top of the insert plate is provided with insert slots; the top of the base is providedwith grooves cooperatively used with the insert slots; two sides of the insert plate are each fixedly connected with a sleeve block. Through cooperative use of the stand columns, clamp holes, a fixing box, screw rods, a sliding groove, a sliding block, screw sleeves, a connecting rod, sliding sleeves, sliding rods, a support rod, a through groove, springs, a torsion block, a clamp rod and the sleeve blocks, the problems that a conventional test tube rack used for chemical experiments is fixed and the height cannot be adjusted according to the test tubes with different heights are solved, thetest tube rack used for the chemical experiments has the advantages of adjustable height, a user can adjust the height of the test tube rack according to the height of the test tubes, the user can conveniently place the test tubes with different lengths, and the practicability of the test tube rack for chemical experiments is improved.

The invention provides a 'J' type biliary stent for drainage of high biliary obstruction, which comprises: a bile duct part arranged in a common bile duct and an intestinal part arranged in a duodenum. The intestinal part is integrally connected with the bile duct part. A large 'C' type structure is formed in the intestinal part. By arranging the bile duct part and the intestinal part and settingthe intestinal part as a large 'C' type structure, the intestinal part can form a 'C' type ring at the descending part of duodenum, which effectively avoids the situations of movement of the long frame for drainage of high-level biliary obstruction to the bile duct and slip of the duodenum. As a result, the drainage effect is more stable and reliable, and the practicability of the 'J' type biliary stent for drainage of high biliary obstruction is improved. The manufacture is simple, which facilitates the popularization and application in the market.

The invention relates to an automatic packing box forming machine and a forming method of the automatic packing box forming machine. The automatic packing box forming machine comprises a die assembly, a die lifting device and a die turning device. The die assemble comprises a movable die, a fixed die and auxiliary turning dies, wherein the movable die is arranged on the die lifting platform, the fixed die and the movable die are oppositely arranged, the auxiliary turning dies are arranged on the two sides of the fixed die respectively, and the auxiliary turning dies are connected with the die turning device. The die lifting device drives the movable die to press the end face, opposite to the movable die, of the fixed die. The die turning device makes the lateral sides, adjacent and parallel to the fixed die, of the auxiliary turning dies turn to press the side face of the movable die. The automatic packing box forming machine and the forming method can be used for manufacturing square packing boxes of different shapes and sizes, the automation degree of the production process can be improved, the production efficiency and the finished product rate can be increased, and the production cost can be reduced.

The invention discloses a substation for rail transit. The substation comprises a box, wherein the top of the box is fixedly connected with a case, a first motor is arranged on the back side of the inner wall of the case, an output shaft of the first motor is fixedly connected with a disc, the front of the disc is fixedly connected with a cylinder, and a movable rod is arranged on the surface of the cylinder in a sleeving manner. Under cooperative use of a heat dissipation port, a hose, an air inlet pipe, a fan, an air outlet pipe, the case, a support rod, an exhaust pipe, spray nozzles, the first motor, the movable rod, a connecting rod, a supporting rod, the disc, a slide bar, a spring, the cylinder, a slide bushing, a chute, blades, a second motor and a rotating shaft, the problems thatthe conventional substation for rail transit realizes heat dissipation through air circulation commonly and the heat dissipation effect is poor are solved, the substation for rail transit has the advantage of good heat dissipation effect, heat produced by electrical equipment can be discharged timely, service life of the electrical equipment is prolonged, and practicability of the substation forrail transit is improved.

The invention discloses a building scaffold with good stability. The building scaffold comprises a scaffold body, a bearing plate is arranged at the bottom of the scaffold body, a shell is arranged atthe bottom of the bearing plate, a positive-negative motor is arranged on the left side of an inner cavity of the shell, sliding grooves are formed in two sides of the inner cavity of the shell, a supporting plate is arranged between the two sliding grooves, and first sliders are arranged on two sides of the supporting plate. By coordination of the bearing plate, the shell, the sliding grooves, the supporting plate, the first sliders, pulleys, the positive-negative motor, a fixing plate, a bearing, a cylinder, a spiral chute, a sliding rod, a sliding rail, second sliders, a pull rod, a mounting block and a movable rod, the building scaffold solves the problem of poor stability of an existing scaffold, the pulleys can be collected when the scaffold is used, sliding of the scaffold in use is avoided, the scaffold is conveniently used by a user, practicability of the scaffold is improved, and the scaffold is suitable for popularization and use.

The invention discloses a ceiling lamp. The ceiling lamp comprises a base, two sides of the front face of the base are both provided with first grooves, each first groove is internally and movably connected with a moving rod through a rotating shaft, one end of each moving rod is fixedly connected with a first connection rod, the bottoms of two sides of the base are both provided with second grooves, and the second grooves communicate with the first grooves, and the end, away from the corresponding moving rod, of each first connection rod runs through the corresponding first groove and secondgroove in sequence and extends to the outer portion of the base to be fixedly connected with a clamping block. According to the ceiling lamp, by means of supporting blocks and supporting rods, the effect of driving second fixed blocks to move is achieved; by means of the second fixed blocks and first fixed blocks, the effect of driving the moving rods to move is achieved, and meanwhile, the effectof driving the clamping blocks to move is achieved; by means of first springs, the effect of supporting the clamping blocks is achieved; and by means of a threaded hole and a threaded rod, the effectof disassembling the ceiling lamp conveniently is achieved, the ceiling lamp is conveniently installed, and replacement is conveniently performed for users when the ceiling lamp is damaged.

The invention belongs to the tunnel construction field and discloses a cable laying traction device in a tunnel. The device comprises a device pedestal, guide mechanisms, a traction mechanism and a speed measurement component. The two guide mechanisms are fixedly installed at left and right ends of a traction device main body. The traction mechanism is arranged between the two guide mechanisms andis movably installed on the device pedestal through a friction force adjusting mechanism, and a cable enters from one guide mechanism, penetrates through the speed measurement component and the traction mechanism and then leaves from the other guide mechanism. The friction force adjusting mechanism comprises an upper pedestal, an electromagnetic telescopic column and a sliding block. The upper pedestal is fixedly arranged above the device pedestal, two sliding grooves are arranged on an upper surface, a bottom of the traction mechanism is fixedly connected with tops of sliding blocks arrangedin the sliding grooves, one end of the electromagnetic telescopic column is fixedly connected with the device pedestal through a connecting mechanism, and the other end of the electromagnetic telescopic column is fixedly connected with a side surface of a speed reducer. In the invention, a traction speed of a cable can be ensured, and cable laying efficiency is improved.

The invention discloses a raw material screening device for food processing. The raw material screening device for food processing comprises a shell, a rotating shaft is movably connected to the righttop of the inner wall of the shell, the left side of the rotating shaft penetrates into the left side of the shell and is fixedly connected with a first rotating wheel, a second motor is fixedly connected to the left top of the shell, the output end of the second motor is fixedly connected with a second rotating wheel, and the surface of the second rotating wheel is in drive connection with the surface of the first rotating wheel through a belt. The raw material screening device for food processing has the advantages that through matching of a first screen cloth, a screen plate, supporting blocks, supporting columns, a supporting box, a first motor, the first rotating wheel, the rotating shaft, the second rotating wheel, the belt, the second motor, a drum, a second screen cloth, stop plates, supporting plates, a second carrying plate, a U-shaped rod, a slide sleeve, a pull rod, fixing blocks, first carrying plates, lugs, fixing rods, pulleys and slide grooves, the problem that an existing raw material screening device for food processing is poor in screening effect is solved and good screening effects are achieved.

The invention relates to a medical instrument, in particular to a springing replaceable hand surgical tap holder, which consists of a knob, a switch strip, an annular bump, a rotating shaft seat, a sliding chute, a sliding shaft seat, a sliding shaft, a dead bolt, a sealing ring, a spring, an operating rod, a replaceable head, a blind hole and a locking hole. The operating rod is a cylinder, wherein an axial blind hole is formed in the center of the lower end of the cylinder. The upper end of the operating rod is integrated with the knob. The replaceable head consists of a rod part, and a tap head and a base which are integrated with the two ends of the rod part respectively, wherein the base and the rod part are coaxial cylinders; the rod part has a diameter smaller than that of the base; a circular hole is formed on the sidewall of the base; and the base is positioned in the blind hole, and forms assembly clearance fit with the blind hole. The springing replaceable hand surgical tap holder greatly reduces the cost of a surgical instrument, avoids waste and simultaneously saves a sterilization space and transportation cost.

The invention discloses a crushing and cleaning device for producing a sauce braised pork product. The crushing and cleaning device comprises a cleaning tank; a crushing tank is fixedly connected to the top of the cleaning tank; a shell is fixedly connected to the right side of the crushing tank; a first motor is fixedly connected to the right side of the shell; the output end of the first motor penetrates through an inner cavity of the shell and is fixedly connected with a first gear; and the right side of the inner cavity of the shell is provided with a through hole which is used and matchedwith the first motor. According to the crushing and cleaning device provided by the invention, through matching use of the cleaning tank, the crushing tank, the shell, the first motor, the first gear, a second gear, a rotary shaft, a circular chute, a bearing, a crushing paddle, a feeding hole, a second motor, a cylinder, a cleaning paddle, a water inlet pipe, a discharge hole, a water outlet pipe, a valve, a through groove and supporting legs, the problems proposed by the background are solved, and the sauce braised pork product producing device does not need to use a cleaning device and a crushing device separately during crushing and cleaning of meat.

The invention discloses a distillation system with efficient waste heat recovery. The distillation system comprises a molecular distillation device, wherein the top portion of the left side of the molecular distillation device is connected to a sealing ring through a through hole, the left side of the sealing ring is connected to a gas conduction pipe 1 through a fixation ring, one end of the gasconduction pipe 1 is provided with a piston, the surface of one end of the gas conduction pipe 1 is provided with a connection hole, the surface of the connection hole is provided with a gas conduction pipe 2, one end of the gas conduction pipe 2 is connected to a gas conduction pipe 3 through a gas pump 1, and one end of the gas conduction pipe 3 is connected to a waste heat recovery device through the fixation ring. According to the present invention, the distillation system with efficient waste heat recovery is provided, and can recover the waste heat of the distillation device by matchingthe separation plate, the thermal conduction medium, the waste heat recovery device, the preheating pipe, the fixation rod, the connection hole, the gas conduction pipe 2, the gas pump 1, the gas conduction pipe 3 and the gas pump 2, such that the distillation device waste heat recovery efficiency is high.

The invention relates to the technical field of electronic commerce data encryption and discloses a USB flash disk anti-theft device for electronic commerce data encryption. The device comprises a USBflash disk body, a USB interface is formed in the bottom end of the USB flash disk body, an opening is formed in the side face of the top of the USB flash disk body, an anti-theft cylinder is arranged at the bottom of the USB flash disk body, and an infrared camera is installed at the bottom of the anti-theft cylinder. A pressure ball embedded in the side surface of the anti-theft cylinder is electrically connected with a pressure sensor on the inner side of the anti-theft cylinder. When a stranger wants to open the anti-theft cylinder, a pressure ball needs to be pressed, a pressure sensor receives a signal and transmits the signal to a main controller; the main controller starts the infrared camera, performs facial analysis on the person according to the original data of the memory, distinguishes whether the person is an owner, starts the buzzer on the display screen to give an alarm once the person is a stranger, and records facial features of the stranger by the memory, so that responsibility asking is facilitated, and the equipment is anti-theft, flexible and convenient to operate.

The invention discloses shell mounting equipment for production of an electric appliance instrument. The shell mounting equipment comprises a fixed seat. A working bin is fixedly mounted on the uppersurface of the fixed seat, and a conveying belt is rotationally mounted on the position, close to the inner side of the working bin, of the upper surface of the fixed seat; a driven roller is rotationally mounted on the lower surface of the conveying belt, and a driving roller is rotationally mounted on the side, close to the driven roller, of the lower surface of the conveying belt; a feeding boxis fixedly mounted on the upper surface of the working bin, the side face of the feeding box is fixedly connected with an operating chamber, and a feeding device is fixedly mounted inside the feedingbox; and a fastening device is fixedly mounted inside the operating chamber. According to the shell mounting equipment for production of the electric appliance instrument, through the fastening device, the fastening device can achieve automatic screw turning operation after screws are put, the screw turning speed of the fastening device is higher than the manual screw turning speed, and force isbalanced, so that the stability of shell mounting is ensured, and the phenomenon that the screws are likely to slip due to the fact that the force is different in manual screw turning is avoided.

The invention provides a film coating and packaging device and a method for a pole piece large coil of a lithium ion battery. The film coating and packaging device comprises a U-shaped framework, wherein the U-shaped framework is arranged on a bottom plate, the top ends of the U-shaped framework are connected by a guide plate, a press plate is arranged above the guide plate, and is connected with a knife holder, and a cutting knife is fixedly arranged on the knife holder; brackets are symmetrically and fixedly arranged at the two side walls of the U-shaped framework, and are used for fixing a battery pole piece large coil, a pearl wool large coil and a preserving film large coil; a clamp is fixedly arranged at the top end of each bracket and is used for clamping a fixed coil shaft. The film coating and packaging device has the advantages that the pressing damage of the pole piece surface due to direct placing of the electrode pole piece large coil on plane for packaging, and the possible slipping of the packaging pole coil shaft of common turnover frame is avoided; the operation method of pole piece large coil packaging is simplified; the operation is safe and simple, the material is saved, the packaging material can be controlled, the external connection of electricity, gas and energy source is not needed, the consumption is zero, and the like.

The invention discloses a foldable all-terrain bicycle including a frame, wheels mounted on the frame, a seat, a handle, pedals, a wheel drive transmission system, and a wheel differential system, theframe includes a frame rail, a frame rail and a wheel support frame, and the frame rail, the frame rail, the frame rail and the wheel support are connected by a frame hinge. The handle and a seat aremount on that cross bar of the frame, a wheel comprises a hub, a tire plate unit and a tire drive shaft, the wheel drive transmission system comprises a center drive mechanism, a front wheel drive mechanism and a rear wheel drive mechanism, a wheel differential system comprises a differential and a differential locking mechanism, and a differential comprises a differential housing, a differentialdrive shaft, a differential drive shaft and a drive gear set. The invention is convenient to disassemble, assemble and fold, convenient to travel and carry, stable to ride, good in shock absorbing effect, capable of passing through various bad road conditions and switching between different road conditions, good in safety and reliability, and wide in application range.

The medical headlamp includes a main lamp holder, wires and line fixing buckles, the front end of the main lamp holder is provided with a telescopic focusing ring; both sides of the rear end of the main lamp holder are fixedly arranged with auxiliary lamps; the connection between the elbow and the main lamp holder is A lamp head vertical adjustment knob is arranged at the connection, and the end of the lamp head vertical adjustment knob is spherical; the top of the connecting elbow is connected with the T-shaped fixing block through the lamp head horizontal adjustment knob; both ends of the T-shaped fixing block are connected There is a waterproof headband, and the waterproof headband has a certain elasticity and elasticity. The structure of the main lamp holder and the auxiliary lamp of the present invention can be adjusted up and down by 90 degrees, and the setting of 180 degrees in the horizontal direction can be adjusted in the horizontal direction through the horizontal adjustment knob of the lamp head, which is beneficial for medical staff to use the headlamp according to personal use characteristics and The height feature enables the headlight to meet the use of more people, and can meet the actual angle adjustment according to the required lighting requirements when used in different places.

The invention relates to an extractor, in particular to an extractor for municipal sewer manhole covers. According to the extractor for the municipal sewer manhole covers, labor is saved, and the manhole covers are prevented from being damaged. The extractor for the municipal sewer manhole covers comprises an annular plate, universal wheels, inclined plates, installation rods, slide rails, slide blocks, a cross rod, a moving frame, an iron chain, a first clamping rod, a sleeve, a second clamping rod, a support plate and the like. The universal wheels are uniformly arranged at intervals at thebottom of the annular plate in the circumferential direction, the two inclined plates which play a supporting role are separately arranged on the left and right sides of the top of the annular plate,the installation rods are connected to the lower parts of the inner sides of the inclined plates, and the slide rails which play a guiding role are connected to the inner ends of the installation rodsin a bolting mode. According to the extractor for the municipal sewer manhole covers, the first clamping rod can be driven to move upwards by controlling a driving mechanism to lift the manhole covers, so that a worker does not need to bend to lift the manhole covers, and the worker can save more labor.

The novel trash can of the present invention is reasonable in structure, easy to operate and strong in practicability. By setting a number of sawtooth openings on the upper end of the barrel body, not only can the garbage bag whose opening is larger than the opening of the barrel be lined, but also the garbage bag with a smaller opening can be firmly fixed by means of the sawtooth openings. At the same time, the invention adopts a square barrel to avoid the phenomenon that the traditional round garbage can is easy to slip when lined with garbage bags, and multiple garbage bags can be lined on the barrel to realize the classified storage of garbage. In addition, the sealing The setting of the device can conveniently and timely seal the garbage bag, prevent the emission of garbage odor, and facilitate the disposal and transportation of garbage.

The invention relates to a medical appliance, in particular to a backwards-turnable type hand surgery quick-assembling handle. The backwards-turnable type hand surgery quick-assembling handle consists of a base, a positioning groove, an anti-rotation groove, a sleeve, a positioning block, a snap ring, a tail disk, a spring, a handle, a raised strip and a replaceable head, wherein the base is cylindrical; an n-shaped positioning groove is formed on a side wall of the base; the positioning block is a cubic bulge positioned on a side wall of the left end of the handle; the positioning block and the handle are formed into a whole; and the positioning block is positioned in the positioning groove and is movably matched with the positioning groove. Compared with the prior art, the backwards-turnable type hand surgery quick-assembling handle fully avoids stripping between a screw driver or a screw tap and a handle by adopting the n-shaped positioning groove to lock the base of the replaceable head and the handle when used, is stable, and can be conveniently and quickly assembled and disassembled at the same time.