56results about How to "Balance gravity" patented technology

The invention provides a dry type wafer polishing device and method. The dry type wafer polishing device comprises a pressure control system which is arranged on a working table and used for detecting the polishing pressure value and comprises a polishing mechanism, cylinders connected with the polishing mechanism and a machine frame respectively, and a motor connected with the polishing mechanism and the machine frame respectively and used for driving the polishing mechanism to move. The cylinders are fixedly connected with the polishing mechanism. The motor is located above the polishing mechanism and connected with the polishing mechanism. By controlling pressure through pressure sensors, the design that constant-pressure polishing is achieved, the gravity of the polishing mechanism is balanced and buffered through the cylinders and the motor drives the polishing mechanism for feeding is achieved, and the device is compact in overall structure, easy to install, reliable in structure and stable in running.

The invention relates to a wireless electricity-taking car and a road contactless power supply system in road traffic and transport means. In the invention, a power supply is not directly input through electric wire, while a contactless electromagnetic induction transformer arranged under a chassis of a car head indirectly absorbs electric energy in a special power supply cable embedded on a road and charges a storage battery on the car while driving the car to move. Particularly by adopting electric-magnetic-electric contactless power supply and electricity-taking technologies, a 10kV / 15-40KHz high-frequency and high-voltage cable is embedded on a road surface to generate a high-energy vertical electromagnetic wave and an alternating magnetic field; and the transformer arranged under the car is applied with comprehensive induction of the high-frequency electromagnetic wave and the alternating electromagnetic field when the transformer is close to vertical distance of 150-450mm of the cable to induce resultant current in coils and restore magnetic energy into electric energy, thus providing advancing power for the car and charging the battery on the car, and guaranteeing the car can run for longer distance with sufficient electricity after leaving the power supply road. The technology of the invention thoroughly solves the difficult problems of limited energy storage and troublesome charging of the storage battery of the existing similar cars, and explores a new way for energy conservation and emission reduction of the cars.

The invention is suitable for the technical field of household appliance and discloses a door articulated mechanism and a dish washing machine provided with the door articulated mechanism. The door articulated mechanism comprises a fixing component, a rotating component and a connecting assembly; the connecting assembly comprises a connecting shaft, a friction mechanism, a spring, a connecting sleeve and a locking component; one end of the connecting shaft is fixed to the fixing component, the friction mechanism and the spring are arranged on the middle portion of the connecting sleeve in a sleeved mode, and the rotating component and the friction mechanism are arranged between the fixing component and the spring; the connecting sleeve is arranged on the spring in a sleeved mode, and the rotating component is arranged on the connecting sleeve in a sleeved mode; the rotating component is connected with the friction structure in an inserted mode; the locking component is fixedly connected with the other end of the connecting shaft and locks the friction mechanism, the spring, the connecting sleeve and the locking component to the connecting shaft. According to the door articulated mechanism and the dish washing machine, on the one hand, hovering of a machine door at any opened angle is achieved; one the other hand, the universality of the door articulated mechanism capable of making the machine door to hover at any opened angle on the household appliances of different sizes are improved.

The invention relates to an automatic opposite-angle clamping type omnidirectional rotary cantilever support which is composed of a universal support and a clamping device. The upper end and the lower end of a second chaining piece in the universal support are respectively and movably connected with a third chaining piece and a first chaining piece in a chaining mode through a second supporting rod and a first supporting rod so as to form an upper and lower arm four-connecting-rod structure. Gravitational equilibrium springs are respectively arranged between the second chaining piece and the second supporting rod and between the first chaining piece and the first supporting rod. The lower end of the first chaining piece is connected with a fixed clamp in a rotating mode, a fixed screwing handle is arranged in the fixed clamp, the front end of the third chaining piece is hinged with a rotary rod, a clamping screwing buckle is arranged on a hinged portion, and the rotary rod is connected with the clamping device through a universal clamping piece and the clamping screwing buckle. A holding strip is arranged in an outer shell of the clamping device, a rack is arranged on the holding strip, the rack is meshed with a pinion, the pinion is meshed with a gear wheel, the pinion and the gear wheel are connected on a protruded shaft of the outer shell, the center of a torsion spring is fixed on the protruded shaft of the outer shell, and the other end of the torsion spring is fixed on a protruded shaft of the gear wheel, and a clamping head is arranged at the front end of the holding strip.

The present invention discloses a gravity balancing device for a rehabilitation robot arm, and belongs to the field of rehabilitation robots. The gravity balancing device includes a shoulder joint connecting member, an upper arm connecting member and a gravity balancing assembly; the shoulder joint connecting member and the upper arm connecting member are pivotally connected according to the human body bionic structure to simulate the rotational movement of the upper arm of the human body around the shoulder joint; the gravity balancing assembly includes a plurality of springs, wire ropes and guide pulleys, the wire ropes connect the springs to the shoulder joint connecting member and the upper arm connecting member, the spring tension is used to balance the gravity of the arm, and the guide pulleys are used to change the force directions of the wire ropes, thereby saving space and making the device structure more compact. Further, by locking different guide pulleys, the arm gravity can be still balanced by the spring tension after switching of the rehabilitation robot between the left and right hand training modes, thereby ensuring that the robot can still work normally after the training mode is switched.

The invention relates to a double flexible pair-based three-degree-of-freedom precision adjustment parallel mechanism, comprising three groups of motion branch chains which are connected in parallel and have the same structure, wherein the three groups of motion branch chains are in uneven circumference distribution at three extending ends of an immersion unit by taking a center hole of the immersion unit as a center; each group of motion branch chain comprises a linear motion assembly, a double flexible pair connecting rod assembly, a mechanical anti-collision assembly, a Z-direction displacement measuring assembly and a gravity compensation assembly. The double flexible pair-based three-degree-of-freedom precision adjustment parallel mechanism is used for realizing installation, fixationand space position adjustment of the immersion unit of an immersion type photoetching machine and realizing micron-level positioning of the immersion unit; double flexible pairs are adopted, the structure is simple and compact, and the advantages of no friction and no need of lubrication are achieved; the wholly mechanism adopts a parallel mechanism, the rigidity is high, the response is quick, the adjustment range is large, modular design and assembly are adopted, and the mechanism can be used for three-degree-of-freedom precision adjustment in other occasions except the immersion type photoetching machine.

The invention relates to a plate bending machine capable of automatically adjusting multiple groups of upper supporting roller devices, which belongs to the technical field of structures of super wide plate bending machines. Each group of upper supporting roller device is hung on the lower end of a beam through a spring, and the upper ends of the upper supporting roller devices are fixedly connected with fixed longitudinal lower inclined irons; the lower ends of both heads of the beam are respectively fixedly connected with oil tanks, telescopic links of the two oil tanks are coaxially opposite and parallel to upper rollers, a connection beam is connected between the two telescopic links of the two oil tanks, longitudinal upper inclined irons are uniformly distributed on the connection beam, and the lower surface of each longitudinal upper inclined iron is respectively contacted with the upper end surfaces of the corresponding fixed longitudinal lower inclined irons; the front side and the rear side of the lower end of the beam are respectively fixed with positioning seats, two inner lateral surfaces opposite to the positioning seats are respectively provided with vertical key slots, and the front side and the rear side of each group of upper supporting roller device are connected with the positioning seats through guide keys inside the key slots. The invention can fast synchronously adjust the multiple groups of upper supporting roller devices, reduce the time of plate bending preparatory processes, enable the plate bending operation to be more convenient and enhance the precision of plate bending products.

The invention discloses an electric fan. The electric fan comprises a fan head assembly, an adjusting box and a fan body assembly. The fan head assembly is arranged on the adjusting box. The adjusting box is arranged on the fan body assembly in the mode of rotating around a horizontal rotating shaft. The horizontal rotating shaft is sleeved with an adjusting gear in a sliding mode. The adjusting gear is fixed to the fan body assembly in the circumferential direction. The first end face of the adjusting gear is provided with first end face teeth extending towards the adjusting box. The adjusting box is provided with second end face teeth matched with the first end face teeth. An adjusting spring is arranged between the second end face of the adjusting gear and the fan body assembly. One end of the adjusting spring abuts against the first end face of the adjusting gear. The second end of the adjusting spring abuts against the fan body assembly. According to the electric fan, the problems that due to frictional wear, frictional force between the adjusting box and the fan body assembly is reduced, and the fan head assembly droops can be effectively prevented.

The invention introduces a gravity balancing device. A first cylinder (2) is arranged above a connecting piece (4) on a bracket (1) thereof is provided with, and a principal axis box (3) ia arranged below the connecting piece (4). The first cylinder (2) is connected with a second cylinder (21) and is matched with a first air valve (24) and a second air valve (214). A first decelerating mechanism (31) is connected between one end of the connecting piece (4) and the principal axis box (3), and a second decelerating mechanism (32) is connected between the other end of the connecting piece (4) and the principal axis box (3). The second decelerating mechanism is respectively assembled at the bracket (1) by a slide block (33) which can slide freely in a reciprocating way. The gravity balancing device has the characteristics as follows: 1) the gravity balancing device can transform the high speed vertical motion of a gravity component into the low speed motion of the connecting piece; 2) the gravity balancing device ensures that two cylinders always keep the pressure difference, so as to balance the gravity of a component with the high speed vertical motion; and 3) the gravity balancing device has good synchronous performance, simple structure and easy implement.

The invention discloses a fixing device for motorcycle engine end cover processing, which comprises a base. The inside is provided with a thread groove, and the thread groove is screwed and connected with the external thread on the surface of the fixing seat. The upper surface of the gland is provided with a through hole, and the through hole communicates with the thread groove. The inside of the fixing seat is provided with A counterbore, the counterbore is arranged vertically, and a column is arranged inside the counterbore, and the column vertically extends through the through hole to the outside of the gland. The present invention adopts two oppositely arranged clamping mechanisms, and adopts the up-and-down expansion and contraction of the column and the horizontal opposite movement of the screw rod to realize the clamping of the workpiece, which can achieve effective and stable clamping of workpieces with various shapes, and is convenient for multiple angles of the workpiece The adjustment improves the workpiece clamping range and effectively improves the processing efficiency.

The invention relates to a high and low temperature mechanical performance testing system, specifically a high and low temperature mechanical performance testing device for a stretching mechanism for testing the deployment performance of a large truss stretching mechanism in a high and low temperature and space weightless environment, including a truss storage unit and a force loading unit , a force-loading follower unit, a force-loading transmission frame and a gravity balance trolley, wherein the force-loading unit is movably installed on the force-loading transmission frame, the force-loading unit is driven to move by the force-loading follow-up unit, and the truss is arranged on On the truss storage unit, the free end of the truss is connected to the force loading unit, and the part of the truss protruding from the truss storage unit is lifted and supported by the gravity balance trolley. A pressure sensor, a force spring and a displacement sensor for measuring the compression of the force spring are provided. The invention can realize functions such as active following and active adjustment of loading force during testing, and the testing efficiency is high.

A furnace top feeding device of a semi-closed submerged arc furnace comprises a weighing stock bin, a finger valve, a hydraulic gate valve, a herringbone feed tube, an inclined feed tube and a feed nozzle. The weighing stock bin is fixed to a weighing stock bin floor, a lower opening of the weighing stock bin is connected with the finger valve and the hydraulic gate valve, the herringbone feed tube is fixed to a feed tube mounting floor, an upper end opening of the herringbone feed tube is connected with a discharging pipe of the hydraulic gate valve, an upper end opening of the inclined feed tube is communicated with the a lower end opening of the herringbone feed tube, a lower end opening of the inclined feed tube is communicated with the feed nozzle, a pneumatic flap valve is arranged on the inclined feed tube, and the pneumatic flap valve is in interlocking and interaction with the hydraulic gate valve. The device has the advantages that weight changes of materials can be monitored by the weighing stock bin in real time, detection is continuous, safe and reliable, the weighing precision is reliable, quantitative feeding is achieved, the inclined feed tube is sealed by the materials, the impact of the materials to the inclined feed tube is small, the service life of the inclined feed tube is prolonged, the occupied space of the pneumatic flap valve is small, and the original arrangement of the factory is not affected.

The invention provides an underwater wet-method repairing device and method for concrete pile defects. The repairing device comprises side molds and bottom molds, wherein the side molds are used for enclosing a concrete pile, and the bottom molds are used for sealing the concrete pile and the bottom parts of the side molds, and the bottom molds are arranged at the bottom parts of the side molds. The underwater wet-method repairing device for the concrete pile defects has the advantages of being convenient to install, capable of being repeatedly used and high in repairing efficiency.

The invention relates to a hanging apparatus used for a ground unfolding test of a flexible solar battery array. The apparatus can realize hanging in different layers, and the apparatus consists of a mounting frame, adapting blocks, guiding rails, threaded rods, bearings, hanging forks, connecting rods, balance plate hanging steel wire ropes, hanging balance plate assemblies, battery panel hanging steel wire ropes and flexible solar battery panels, wherein multiple layers of guiding rails are formed in the mounting frame; the bearings and the hanging forks assembling bodies are put on the guiding rails in a staggered manner; the adapting blocks, the threaded rods and the connecting rods are arranged in a staggered manner at different heights; two bearings are mounted on a single hanging fork; after the bearings are put on the guiding rails, the bearings can move front and back flexibly; one end of each steel wire rope is connected with the upper end of the corresponding flexible solar battery panel while the other end is connected with the corresponding hanging balance plate assembly; and the hanging balance plate assembly is connected with an upper end part through the corresponding middle steel wire rope. By adoption of the hanging apparatus, the gravity of the solar battery panel can be balanced, and the hanging state of the flexible solar battery array in a whole process from closing to unfolding can be maintained, so as to simulate a working condition of weight loss of the solar battery panel in the outer space.

The invention provides an automatic-temperature-control electrothermal coating for ice removal and prevention of railway vehicles, and a preparation method and application thereof. The automatic-temperature-control electrothermal coating comprises 15% to 58% of matrix resin, 0.5% to 17% of a curing agent, 5% to 40% of a conductive material, 1% to 22% of an auxiliary agent, and 18% to 70% of a solvent.

The invention discloses a wheeled stretcher integrating oxygen inhalation, infusion and patient restraint. The wheeled stretcher comprises a frame, a stretcher and wheels, the stretcher is arranged on the upper portion of the frame, a first cross road and a second cross rod are arranged on the lower portion of the frame, and the first cross rod is located in front of the second cross rod. A turnover oxygen cylinder containing device is included and comprises an oxygen cylinder barrel and a gas spring, the oxygen cylinder barrel is movably connected with the second cross rod, the oxygen cylinder barrel can rotate around the second cross rod, the barrel opening end of the oxygen cylinder barrel is arranged on the first cross rod, the oxygen cylinder barrel is inclined relative to the horizontal direction, and the front portion of the oxygen cylinder barrel is higher than the rear portion of the oxygen cylinder barrel. One end of the gas spring is fixedly connected with the first cross rod, and the other end of the gas spring is fixedly connected with the oxygen cylinder barrel. A storable infusion support device and at least two restraint strap winding devices are further included, three functions are integrated, the wheeled stretcher is beneficial to rescuing patients by medical workers in time, and the labor intensity of nurses is remarkably reduced.

The invention discloses an arc-shaped rotary LED lamp which comprises a lamp holder, a power supply, a motor, a heat radiator and an LED. The power supply is arranged in the lamp holder, the motor is arranged below the power supply, a conductive ring is arranged below the motor, the heat radiator is arranged on a motor shaft, and the LED is arranged on the heat radiator. Through the mode, the arc-shaped rotary LED lamp has the advantages of being high in reliability, compact in structure, free of flashing, low in noise, low in price, low in operating temperature, long in service life, good in illumination and the like, and meanwhile has wide market prospects in the LED illumination market.

The present invention discloses a preparation process of an agaricus bisporus functional beverage. The preparation process specifically comprises the following steps: agaricus bisporus cleaning; color protecting; pre-cooking; cutting and pulping; primarily sterilizing; cooling; inoculating and fermenting; mixing; homogenizing; secondarily sterilizing; and canning. The preparation process disclosed by the present invention is scientific and reasonable, and is short in flow and easy for quality control, and the produced agaricus bisporus functional beverage is good in quality.

Two-side-driven rotary tillage soil-preparing machine, comprising transmission assembly and knife roller assembly, wherein the transmission assembly comprises an intermediate transmission box and left and right two side transmission boxes. A power input shaft and a differential connected to rear power output of the tractor through cardan joint are fixed in the intermediate transmission box, wherein a transmission gear is fixed on casing of differential and an input bevel pinion is mounted on the power input shaft, and the transmission gear and the bevel pinion transmit through gears. The differential has a structure that four orthogonal angle gears are fixed in the casing, wherein each of the two angle gears at left and right is connected with an output half shaft respectively of which outer end is connected to a drive gear in each of the two side transmission boxes respectively. When tooth spaces of gears in the left and right two side transmission boxes are not on a same line, the two angle gears at left and right in the differential would be lightly turned under the action of torque to make the drive gears in the two side transmission boxes normally work, thereby making knife roller assembly normally rotate. The soil-preparing machine has the advantages of gravity balance in whole body, fine stability and flat ground surface after ploughing.

The invention relates to a counterweight adjusting device used for a built-in manipulating handle of a hollow window shutter. The built-in manipulating handle comprises a handle body; the counterweight adjusting device comprises cantilevers arranged on the left side and the right side of the bottom of the handle body, and a clamping groove structure is formed between the cantilevers on the left side and the right side and the bottom of the handle body; the counterweight adjusting device further comprises a counterweight block adjustment device; the counterweight block adjustment device comprises a clamping buckle arranged at the top end of the counterweight block adjustment device, and mounting grooves are formed in the left side and the right side of the clamping buckle; and the clampingbuckle can be mounted in the clamping groove structure in a matched mode, the bottom ends of the cantilevers are mounted in the mounting grooves of the clamping buckle. In order that shutter blinds are retracted and pulled more easily and the phenomena that the shutter blinds rebound and are hung downwards due to degaussing of a handle magnet are prevented, the counterweight adjusting device is adopted. A lead block with the weight being similar to the weight of blades is additionally arranged on the lower portion of the inner handle, the gravity of the blades is balanced under the situation that magnetic force is weakened, and meanwhile, the labor saving effect is achieved; and the built-in handle and a counterweight block are connected by adopting the clamping groove structure, mountingis convenient, and falling-off is not prone to occurring.

The invention relates to the technical field of dispensing, in particular to a mechanical arm automatic dispensing mechanism. The mechanical arm automatic dispensing mechanism comprises a bottom platebase, a supporting base is fixedly installed on the bottom plate base, a rotating table is installed on the supporting base, a first telescopic cylinder is fixedly installed on the rotating table, aU-shaped supporting frame is fixedly installed at the upper end of the first telescopic cylinder, the two ends of the U-shaped supporting frame are each fixedly provided with a supporting sleeve, a transverse pipes is arranged in the two supporting sleeves in a matched and sliding mode, driving assemblies used for driving the transverse pipes to move along the supporting sleeves are further installed on the two supporting sleeves, a dispensing box is installed at one end of the transverse pipe, a dispensing head is installed in the dispensing box through a swing assembly, an exhaust fan used for conducting negative pressure suction on an inner cavity of the dispensing box through the inner cavity of the transverse pipe is installed at the other end of the transverse pipe, and an air filtering device is installed on an air outlet of the exhaust fan. It is convenient to apply, control and adjust the dispensing mechanism, peculiar smells generated during dispensing can be removed in realtime, and the air quality of the working environment is improved.

A vertically-oriented lens assembly is disclosed which includes: a lens frame (1); an optical lens (2); two rigid supports (7) that are symmetric to each other with respect to a vertical central axis of the lens frame (1), both integral with the lens frame (1), and both in direct contact with the optical lens (2); an elastic support (4) disposed right under the optical lens (2) and brought into contact with the optical lens (2) by an adjusting screw (10); and a tightening screw (8) disposed on the top of the lens frame (1) for limiting radial displacement of the optical lens (2). A method for forming the vertically-oriented lens assembly is also disclosed, including: disposing the optical lens (2) on a rigid supporting member (5) of the lens frame (1) so that the optical lens (2) is vertically oriented; applying a force to the optical lens (2) via the tightening screw (8) to make the rigid supports (7) both abut the optical lens (2); adjusting a supporting force provided by the elastic support (4) to the optical lens (2) by the adjusting screw (10); attaching pre-tensioning spring leaf (6) and dispensing an adhesive through bores (3) to fixedly attach the optical lens (2) to the lens frame (1); and attaching an axial stop block (11), allowing high stability and a high surface precision and it can be used in engineering applications.

The embodiment of the connection provides a supporting bar used for a display panel, a supporting device and an evaporation method of the display panel, and relates to the technical field of display. The manufacture difficulty of a mask is lowered, and accuracy of coating is also improved. The supporting bar mentioned above comprises a supporting body and shielding parts. On the plane where the orthographic projection of the supporting body is located, the shielding parts protrude on the first side of the supporting body, and each shielding part is provided with a half etching groove. The supporting bar is used for supporting the mask.

The invention relates to an oil pumping power device and a mounting method. The technical problem that according to an existing oil pumping power device, a motor bottom foot fixing mode is easy to damage a motor is solved. The device is provided with a motor and a speed reducer. The motor is a disc type variable-frequency motor. The device is also provided with an installation device. The installation device is provided with an adjusting shaft, a nut, a damping spring, a supporting plate and a damping rubber sleeve, wherein the adjusting shaft is in threaded connection with the nut, the adjusting shaft is in threaded connection with the disc type variable-frequency motor through threads, the supporting plate and the nut are supported through the damping spring, and the lower end of the adjusting shaft is isolated from the supporting plate through the damping rubber sleeve. The method can be widely applied to mounting and fixing of the motor for the oil field pumping unit.

The invention disclsoes a flue smoke exhaust system. The flue smoke exhaust system comprises a public flue, a range hood, a smoke pipe and a fireproof valve, an air outlet of the range hood communicates with the public flue through the smoke pipe and the fireproof valve, and the fireproof valve comprises a valve body installed at the outlet end of the smoke pipe and a valve plate installed on thevalve body; and the flue smoke exhaust system is characterized by further comprising an electromagnetic chuck and a power detection socket, wherein the electromagnetic chuck is used for sucking the valve plate at the maximum opening angle, the electromagnetic chuck is electrically connected with the power detection socket so that the power detection socket can supply power to the electromagnetic chuck, and a plug of the range hood is inserted into the power detection socket so that the power detection socket can detect the power of the range hood. According to the flue smoke exhaust system, the valve plate is sucked through the electromagnetic chuck, so that the valve plate is not prone to swinging due to airflow interference, the power of the range hood is detected through the power detection socket, the magnitude of output current of the electromagnetic chuck is fed back and compensated, then the electromagnetic force is adjusted, and the insufficient air pressure condition caused bysudden air volume change due to range hood gear change is compensated so that the wind pressure and the magnetic force can balance the gravity of the valve plate.

The invention discloses a single-degree-of-freedom eddy current tuned mass damper and damping system for wind power. The damper comprises a support, the support comprises a first horizontal connecting piece and a second horizontal connecting piece, the second horizontal connecting piece is located below the first horizontal connecting piece, and a conductor plate is fixedly installed on the bottom face of the first horizontal connecting piece; a linear guide rail is arranged on the top face of the second horizontal connecting piece and horizontally arranged, a mass block is arranged between the first horizontal connecting piece and the second horizontal connecting piece, magnetic steel is fixedly connected to the top face of the mass block, the magnetic steel and the conductor plate are arranged at intervals, and pulleys are arranged on the bottom face of the mass block and can slide along the linear guide rail. The support is provided with a reversing device, the mass block is connected with a pull rope, the pull rope penetrates through the reversing device and then is connected with a first spring, and the first spring is vertically arranged. According to the single-degree-of-freedom eddy current tuned mass damper and damping system for the wind power, springs which should be horizontally arranged originally can be vertically arranged through the reversing device, and therefore the horizontal installation space of the eddy current tuned mass damper is reduced.

The invention discloses a sand layer geology directional drilling crossing centering device, and belongs to the field of large diameter pipeline directional drilling crossing centering devices. The sand layer geology directional drilling crossing centering device at least comprises a mandrel, a connection sleeve, a float bowl, a support plate and water channels, wherein the float bowl is fixedly connected on the external diameter of the mandrel through the connection sleeve, the support plate and the water channels are arranged in the float bowl, and a reinforcing rib plate is arranged on the connection sleeve. According to the sand layer geology directional drilling crossing centering device, mud in a mandrel mud channel can be directly drawn forth from a plurality of water feeding holes in a plurality of water channel communication mandrels arranged in a front cone barrel and a rear cone barrel of the closed type float bowl, and passes through the plurality of the water channels formed in the front and the rear of the float bowl, floating force can be increased, dead weight of the sand layer geology directional drilling crossing centering device is balanced well, pressure intensity to a stratum is greatly reduced, and accordingly settlement quantity is decreased, not only is a well casing plumb line guaranteed, but also a well casing can not sink along with gravel due to gravel sinking, simplicity and safety of construction are improved, and quality of construction under a sand layer complexity geology condition is improved.

The invention relates to an auxiliary tool for carrying wood boards. The auxiliary tool comprises a bracket, a base arranged at the bottom of one side of the bracket and a lifting assembly arranged atthe top of the other side of the bracket, wherein the lifting assembly comprises a transverse rod fixedly arranged at the top of the bracket, a first vertical rod, a second vertical rod, a sleeve fixedly arranged between the first vertical rod and the second vertical rod, a rotating shaft arranged in the sleeve and dustproof cloth arranged on the rotating shaft, and the first vertical rod and thesecond vertical rod are arranged at the two ends of the transverse rod correspondingly.

The invention discloses a blowing guide device and a battery cell winding system, and relates to the technical field of battery cell production. The blowing guide device comprises an air blowing mechanism, a base plate and a guide piece, wherein the base plate is provided with an air outlet hole, the air blowing mechanism is fixedly installed on the base plate and communicated with the air outlethole, the guide piece is fixedly connected with the base plate and extends in the direction close to the air blowing mechanism, the air blowing mechanism is used for blowing out air flow through the air outlet hole to guide a pole piece, and the guide piece is used for guiding the air flow. Compared with the prior art, the blowing guide device provided by the invention can blow and guide the polepiece to balance the gravity of the pole piece and prevent the pole piece from drooping due to the adoption of the air outlet mechanism communicated with the air outlet hole and the guide piece connected to the base plate, and the guided air flow can stably flow out without influencing the coiling of the pole piece.