60results about How to "Easy to carry and labor-saving" patented technology

The invention discloses a noise-free efficient agricultural pulverizer. The noise-free efficient agricultural pulverizer solves the problems that the pulverizing efficiency is low, potential safety hazards exist, noise is large and carrying is inconvenient in the prior art. The noise-free efficient agricultural pulverizer comprises a base internally provided with a cavity, a driving motor positioned in the cavity and provided with a driving shaft, a pulverizer shell fixed at the top of the base, and a pulverizer cover body which is in threaded connection with the top of the pulverizer shell; the pulverizer shell is of a double-layer structure which is internally provided with an interlayer, a liquid inlet pipe is arranged at the upper part of the pulverizer shell, and a liquid outlet pipe is arranged at the lower part of the pulverizer shell; a first pulverizing knife and a second pulverizing knife which are mutually fixed are arranged in the pulverizer shell from top to bottom, and the driving shaft penetrates into the inner cavity of the pulverizer shell from the bottom of the pulverizer shell and is fixedly connected with the second pulverizing knife; a sound absorption layer used for reducing noise is arranged on the periphery of the pulverizer shell; and four universal wheels are arranged at the bottom of the base. The noise-free efficient agricultural pulverizer is simple in structure, scientific and reasonable in design, convenient to use and high in pulverizing efficiency, the service life can be effectively prolonged, the potential safety hazard can be eliminated, and the noise can be eliminated.

The invention relates to the technical field of wood-plastic composite materials and provides a co-extrusion wood-plastic foaming board. The co-extrusion wood-plastic foaming board comprises a foaming core layer and a surface layer wrapped on the surface of the foaming core layer, wherein the foaming core layer and the surface layer are compounded and formed through a co-extrusion foaming mold; the co-extrusion foaming mold comprises an extrusion section, an expansion section, a co-extrusion section and a cooling section which are sequentially connected with each other; the extrusion section is provided with a raw material flowing cavity; the expansion section is provided with a foaming cavity; the co-extrusion section is provided with a compounding cavity; the cooling section is provided with a cooling cavity; the raw material flowing cavity, the foaming cavity, the compounding cavity and the cooling cavity are sequentially communicated with each other; exhaust holes are formed in the upper side and the lower side of the expansion section; feeding openings are formed in the upper side and the lower side of the co-extrusion section; a heat insulation partition plate is arranged between the co-extrusion section and the cooling section; and forced cooling water pipeline loops are arranged on the upper side and the lower side of the cooling cavity. Through the co-extrusion wood-plastic foaming board, the problems of large density, high consumption of raw materials and high production cost of the co-extrusion wood-plastic board in the prior art are solved.

The invention relates to the technical field of electronic equipment, and discloses a switch cabinet. The key point of the technical scheme is as follows: the switch cabinet comprises a bottom plate,a back plate, a top plate, a door plate and two side plates; a positioning slot and two mutually parallel installation slots are formed in the base plate; the lower ends of the two side plates are separately inserted into the two installation slots; the lower end of the back plate is inserted into the positioning slot; fixing slots are formed in end faces, close to each other, of the two side plates; two ends of the back plate are separately positioned in the two fixing slots; the back plate is connected with the adjacent side plate via a fastener; the top plate is fixed on the back plate andthe upper sides of the side plates via installation pieces; the door plate is hinged to one of the side plates via a hinge; multiple partition slots extending along the length direction are formed inend faces, close to each other, of the two side plates; a partition plate is inserted between any two partition slots with the same height; and the side plate is provided with a limiting piece for limiting the separation of the partition plate and the side plate. The switch cabinet provided by the invention has the effect of being more labor-saving when in transportation.

The invention discloses a forklift convenient to load and unload goods. The forklift comprises a foundation car body, a portal frame, a fork frame, a fork, a driving device and conveying devices; thefront end surface of the foundation car body is hinged to the middle part of an outer portal frame through an inclined oil cylinder; the driving device consists of a hydraulic cylinder, a piston rod,a chain wheel and a chain; the fork frame comprises a foundation fork frame and an adjusting device; the foundation fork frame consists of an upper connecting rod, a lower connecting rod and fixed plates on two sides; the fork consists of a vertical fixed rod, a transverse connecting rod and a side wall connecting plate; the adjusting device consists of a fixed bearing 1, a lead screw, a nut, a vertical connecting plate, a through groove, a fixed bearing 2 and a driving motor; the conveying devices are arranged on two side inner walls of the side wall connecting plate, and consist of bearings,rotating shafts, conveying belt wheels, conveying belts and conveying motors; and a control box, an operation panel and a power supply device are arranged in the foundation car body. The forklift hasthe beneficial effects of simple structure and high practicability.

The invention relates to an easily pulled and folded portable multipurpose bicycle ridden by multiple persons. The bicycle comprises a bicycle frame, handlebars, a saddle, wheels, foot pedals and a drive mechanism, wherein the bicycle frame comprises a front bicycle frame and a rear bicycle frame, and the front bicycle frame is connected with at least one rear bicycle frame through a connector; the bicycle frame consists of a plurality of beam columns and freely movable joints, is easily, conveniently and rapidly folded by a pushing and pulling way, and can be shortened to be in a state that the front wheel, the middle wheel and the rear wheel are overlapped, thereby the volume of the bicycle is greatly reduced, the handlebars can be also folded so as to reduce the occupied space and facilitate casing, carrying, transporting or storing; the bicycle frame and the freely movable joints are reasonable in structural design and have the favorable intensity and the rigidity, the whole bicycle connection is reliable after a rapidly disassembled locknut is locked, and the bicycle is comfortable and safe when people ride on and has favorable flexibility, equilibrium and stability; after the bicycle is folded, the rotation of the wheels is not influenced, the user only needs supporting the handlebars by hands without lifting by hands, and the bicycle is pushed in such a way that the wheels touch the ground, thereby being convenient to carry; in addition, the bicycle can be ridden by two persons or multiple persons, thereby being suitable for going off daily, touring, entertainment and body-building.

The invention discloses a multifunctional carrying vehicle. The multifunctional carrying vehicle comprises a frame, bearing wheels, a bearing frame, a lifting device, a traction guide device, an operating handle, a power supply device and a control device, wherein the bearing wheels are arranged at the rear end of the frame, and the bearing frame vertically moves on the frame; the lifting device is arranged on the frame, is connected to the bearing frame, and drives the bearing frame to vertically ascend and descend; the traction guide device comprises a steering wheel, a steering frame and adriving mechanism, wherein the steering frame is vertically connected to the front end of the frame in a pivoting mode, the steering wheel is arranged at the lower end of the steering frame, the driving mechanism is arranged on the steering frame, and the output end of the driving mechanism is in transmission connection with the steering wheel; the operating handle is arranged on the frame, and the operating handle can be rotated horizontally to control the steering frame to pivot horizontally and can be rotated vertically to control the lifting device to lift the bearing frame vertically; andthe power supply device is detachably arranged on the frame, the control device is electrically connected between the power supply device and the driving mechanism, the steering, speed adjustment andbraking of the steering wheel are driven by the driving mechanism which is controlled by the control device.

The invention relates to a combined saw which can switch between two working states of mitre saw and bench saw, in particular to an easy conveying combined saw with the moving legs as handles; wherein, a base supporting the saw blade unit comprises a left side frame, a right side frame and four independent legs which can also be performed as handles; two groups of leg-limiting mechanism are respectively arranged on the lower end of the left side frame and the right side frame; each group of leg-limiting mechanism respectively comprises an vertical positioning slot almost extended in vertical direction and a horizontal positioning slot almost extended in horizontal direction; the upper end of the moving legs are rotate-connected with the leg-limiting mechanism by a moving locking component, and the moving legs can be limited in the vertical positioning slot or horizontal positioning slot of the leg-limiting mechanism through matching with the locking component. The combined saw has the advantages of function of handle for the moving legs, light weight, convenient conveying and other excellences; thus the problems in prior combined saw of laboursome and inconvenient conveying.

The invention provides a hardware storage box. The hardware storage box comprises a storage box body and a supporting plate. The storage box body is internally provided with a fixing groove, and the fixing groove is internally provided with a servo motor in a sleeving manner. The output end of the servo motor is fixedly connected with the right side of a first rotating wheel through a rotor. The first rotating wheel is in transmission connection with a second rotating wheel behind the first rotating wheel through a belt. The left side of the first rotating wheel and the left side of the secondrotating wheel are fixedly connected with threaded rods. The bottom of the storage box body is provided with a groove. The left side of the inner wall of the groove is provided with a concaved hole.The left ends of the threaded rods penetrate the groove and extend into the concaved hole. According to the hardware storage box, due to the fact that the supporting plate, the servo motor, the threaded rods, an internal threaded pipe, a fixing rod, landing legs and universal wheels are arranged, the servo motor is connected with a power source through a wire, after the servo motor is started, theservo motor drives the rotor to rotate, and under driving of the belt, the first rotating wheel and the second rotating wheel simultaneously rotate.

The invention provides a sickbed provided with a nursing bed and applied in a ward and relates to the field of medical apparatuses and instruments. The sickbed provided with the nursing bed and applied in the ward includes a main bed board, the front side and rear side of the top of the main bed board are fixedly connected to a bed head, supporting legs are fixedly installed on the four corners ofthe bottom of the main bed board respectively, an infusion pole is fixedly installed on the left side of the top of the main bed board, hooks are arranged on the top of the infusion pole, a storage drawer is fixedly installed at the bottom of the main bed board, and a nursing bed board is arranged in the main bed board. According to the sickbed provided with the nursing bed and applied in the ward, the nursing bed board is arranged in the main bed board, and when there are many visitors of a patient in daytime, the nursing bed board can be stored and drawn out when the patient goes to sleep at night, so that the space of the ward is extremely saved; moreover, by integrating the nursing bed with the sickbed, the integrated sickbed has the advantages that more convenience is provided for conveying and more strength is saved during conveying in comparison with a mode of separately conveying the sickbed bed and the nursing bed; two movable supporting legs are arranged on each of two sidesof the nursing bed board separately, and the sickbed is more stable and comfortable than a foldable bed.

The invention relates to the technical field of sewing, in particular to an overseaming device with the functions of dust removal and thread trimming. The overseaming device comprises a worktable, a bearing plate, supporting legs and a sewing machine main body; the bearing plate is parallelly mounted in the middle of the upper surface of the worktable, the sewing machine main body is mounted on one side of the upper surface of the bearing plate and comprises a connecting column and a clamping plate, and the connecting column is connected with the clamping plate through a clamping structure; the clamping structure comprises a clamping hook which is mounted at the bottom of the connecting column, mounting lugs are vertically mounted on the two sides of the upper surface of the clamping platerespectively, and a rotating shaft is horizontally mounted between the mounting lugs and clamped in the clamping hook; a T-shaped guiding groove for guiding a sewing machine needle is formed in the clamping plate, and an arc-shaped blade is mounted on the lower side of the horizontal end of the guiding groove. The device can greatly reduce dust, thread resides and batt which are generated duringsewing, and improve the working environment and the working efficiency.

The invention relates to a novel engineering cost budget toolbox, which comprises a toolbox, wherein one side of the toolbox is movably connected to a toolbox cover through a hinge; universal wheels are arranged at the bottom of the toolbox; the top of the toolbox cover is fixedly connected to a first handle; a limiting block is arranged at the top of the toolbox; a pull rod is movably connected to the limiting block; the bottom of the pull rod penetrates through the limiting block and is connected in the toolbox; the top of the pull rod is fixedly connected to a second handle; a clamping block is arranged on the toolbox cover; a clamping groove matched with the clamping block is arranged in the toolbox; an illuminating lamp and a writing board are sequentially arranged on the toolbox cover from top to bottom; a supporting groove is arranged in the writing board; the other side of the writing board is also fixedly connected to a clamp; the writing board is movably connected to the toolbox cover through a rotating shaft; and first threaded sleeves are both arranged at the left side and the right side of the writing board. According to the novel engineering cost budget toolbox, the whole structure is convenient to carry, convenient to carry out measurement work on the construction site, and convenient to use.

The invention relates to a labor-saving device for pushing and pulling a two-wheeled vehicle with flat tires, which is characterized in that rubber wheels are arranged at two ends of a connecting line shaft; a towing rope is arranged at the tail end of a trailer plate; the back end of a stand of the labor-saving device is fastened on the connecting line shaft; the front end is in sliding connection with a universal wheel assembly; and a connecting pin is inserted into a pin hole for connecting the universal wheel assembly and the stand of the labor-saving device into a whole. The device of the invention has the advantages of small volume, simple structure, low cost, simple operation and convenient carrying, is stored in a trunk, can be taken out for use once flat tires occur, and enables pushing and pulling processes to be easy and labor-saving.

The invention provides a portable X-ray three-dimensional detection device for a GIS. The portable X-ray three-dimensional detection device comprises an annular supporting rail, an arc-shaped rotatingframe, a ray machine, an imaging plate and fixed clamping jaws, wherein the annular supporting rail comprises a first arc-shaped rail section and a second arc-shaped rail section, and the second arc-shaped rail section is detachably connected with the first arc-shaped rail section; the fixed clamping jaws are fixedly connected with the annular supporting rail and used for being matched with eachother to surround and clamp the side face of the GIS; the arc-shaped rotating frame is arranged on the annular supporting rail in a sliding mode and can do circumferential sliding around the annular supporting rail; and the ray machine and the imaging plate are fixedly arranged on the sliding support rail. The portable X-ray three-dimensional detection device solves the technical problems that existing GIS three-dimensional imaging equipment is generally provided with a large support to support a detection part, and consequently the whole equipment is large in size, large in weight, quite inconvenient to use in a transformer substation site, low in detection efficiency, quite difficult to carry and relatively high in carrying cost are solved.

The invention discloses a spanner for replacing a 500-kV circuit spacer. The spanner for replacing the 500-kV circuit spacer comprises a screw. One end of the screw is a cylindrical rod and the other end of the screw is a threaded rod. The diameter of the cylindrical rod is larger than that of the threaded rod. The center of the outer end of the cylindrical rod in the axial direction is provided with a compressing board capable of rotating. The threaded rod is provided with a moving base and a circular gasket which are capable of moving in the longitudinal direction of the threaded rod. The circular gasket is located between the cylindrical rod and the moving base. The outer end of the threaded rod is provided with a check ring capable of limiting the moving base. The moving base is connected with a handle component and a locking element capable of locating the handle component. The front end of the handle component is a cam. The cam is provided with gear teeth meshed with threads on the threaded rod and used for enabling the moving base to rotate around the threaded rod. According to the spanner for replacing the 500-kV circuit spacer, the position of the moving base is rapidly adjusted through the method that the moving base slides along the threaded rod, the handle component is locked on the moving base through the locking element, the moving base rotates around the threaded rod through the method that the cam at the front end of the handle component is meshed with the threads on the threaded rod, so that the position of the moving base is rapidly adjusted, and the operation time is greatly shortened.

The invention discloses a portable experimental device for sunshine projection simulation. The portable experimental device for sunshine projection simulation comprises a storage mechanism, a connection mechanism, a time synchronization mechanism, a simulation mechanism, a deflection mechanism, a projection mechanism and a storage mechanism; the connection mechanism is arranged at the bottom of the inner cavity of the storage mechanism; the time synchronization mechanism is fixedly arranged on the top of the connection mechanism; one end of the upper surface of the time synchronization mechanism is in flexible connection with the simulation mechanism through a hinge; and one end of the lower surface of the time synchronization mechanism is in rotary connection with the deflection mechanism. The experimental facilities of the invention are all stored in the inner cavity of the storage mechanism; and the storage mechanism is mall and exquisite in volume and light in weight. Due to mutualcooperation of a pulling rod and roller, the storage mechanism is more convenient and more labor-saving to carry; and the sunshine projection simulation condition can be shot and recorded by a videocamera when a sunshine projection condition is simulated, so the sunshine projection simulation process can be watched repeatedly during teaching and the portable experimental device for the sunshineprojection simulation is more convenient to use.

The invention relates to the technical field of ships, and particularly provides an unloading device for a ship. The unloading device comprises a moving platform, a lifting platform and a cargo platform, wherein the bottom of the lifting platform is arranged on the moving platform, the lifting platform can drive the cargo platform to ascend or descend, and the lifting platform comprises a stand column, a sliding base and a driving mechanism. The stand column penetrates through the sliding base and is in sliding connection with the sliding base. The driving mechanism is fixed to the top of thestand column and can drive the sliding base to perform linear to to-and-fro movement along the stand column. The cargo platform comprises a cargo shelf, connecting rods and clamping pieces, the clamping pieces are fixed to the cargo shelf through the connecting rods correspondingly, and springs are further installed between the cargo shelf and the clamping pieces. The height of the cargo platformcan be adjusted according to different heights of cargoes needing to be loaded and unloaded through the arrangement of the lifting platform, the cargoes needing to be loaded and unloaded on a ship deck can be stably placed through the arrangement of the cargo platform, meanwhile, the cargo platform is provided with the clamping pieces, the cargoes can be clamped and fixed, and slipping and fallingof the cargoes are avoided.

The invention relates to a multi-specification motor shaft feeding device. The multi-specification motor shaft feeding device is characterized by comprising a support, a feeding support and a pushingair cylinder, the feeding support and the pushing air cylinder are fixedly installed on the support, the feeding support comprises an L-shaped supporting plate, an inclined support plate, a storing plate and an L-shaped stopping plate, the inclined support plate is fixedly installed on the L-shaped supporting plate, a plurality of snap joints are arranged on the side wall of the inclined support plate, a plurality of clamping holes are formed in the upper surface of the storing plate, the storing plate is detachably clamped to the inclined support plate, the L-shaped stopping plate is fixed tothe L-shaped supporting plate, the L-shaped stopping plate is matched with the storing plate to form a material bayonet, and the pushing air cylinder corresponds to the material bayonet. The multi-specification motor shaft feeding device is scientific and reasonable in structural design, stable and continuous feeding of motor shaft materials can be guaranteed, the motor shaft quality can be guaranteed, motor shaft deformation is effectively prevented, the multi-specification motor shaft feeding device can be suitable for feeding motor shaft cutting machines in different machining sizes, the application scope is wide, manpower is saved, and the feeding efficiency is improved.

The invention relates to the technical field of accessory devices for school supplies, and in particular to a sittable schoolbag, which has a variety of carrying modes, decreases the burden of students, prevents influence on the development of the vertebral column, and increases the reliability in use; and moreover, the sittable schoolbag can provide a seat for a student when the student takes a public transport means or waits for a buts, increasing practicability. The sittable schoolbag comprises a main body, the interior of the main body is provided with a placement cavity, a plurality of compartments are arranged in the placement cavity, the sidewall of the main body is provided with an opening, a zipper in cooperation is arranged at the opening, straps are arranged on the right sidewall of the main body, a rotary shaft is arranged on the bottom of the right end of the main body, three sets of front connecting rods and three sets of rear connecting rod are respectively arranged at the front end and rear end of the rotary shaft, front rollers are arranged on the front side faces, which are far from one end of the rotary shaft, of the three sets of front connecting rods, rear rollers are arranged on the back side faces, which are far from the other end of the rotary shaft, of the three sets of rear connecting rods, a retractable trolley is arranged on the top end of the main body, and the sittable schoolbag further comprises two sets of front supporting tubes, two sets of rear supporting tubes, and a supporting seat.

The invention relates to a simple and labor-saving wild undisturbed soil column sampling device which consists of components such as a base, a sampling tube vertical clamping plate 2, a sleeve 3 of abase stress auxiliary elongated rod, a vertical steel tube 4 with a stress hole, a base stress auxiliary elongated rod 5, a pressing rod 6, an elongated rod 8 of the pressing rod, a pressing plate 9 and a pressing rod fulcrum 10 and a sampling tube 11, wherein the base 1 is welded with the vertical steel tube 4 with the stress hole and the sampling tube vertical clamping plate 2; the base stress auxiliary elongated rod 5 is connected with the base to widen the base stress range; the elongated rod 8 is connected with the pressing rod 6 to increase the pressure of the pressing rod; the pressingplate 6 is arranged at the upper end of the soil column sampling tube 11, and then the pressure of the pressing rod is uniformly distributed to the soil column sampling tube 11; the pressing rod fulcrum 10 is arranged on the pressing plate 9, and a fulcrum of pressure of the pressing rod 6 is provided. The device is based on the lever principle, and pressure is exerted downwards through the pressing rod 9 to vertically press the soil column sampling tube 11 into soil. The device is convenient to manufacture, cheap in material, labor-saving to use and free of original soil layer damage in the sampling process, and the collection efficiency of an undisturbed soil column is greatly improved.

The invention provides a water-saving garden irrigating device. According to the device, a cylindrical rod stretches into a U-shaped groove; connecting pins are respectively arranged on limiting tables positioned at upper and lower ends of the cylindrical rod; connecting pins are respectively mounted on upper and lower end faces of a mounting table; a motor is arranged on the lower end face of the mounting table; a rotating shaft is arranged on the mounting table; the lower end of the rotating shaft is connected with the output end of the motor; a cam is fixedly connected to the upper end of the rotating shaft; a roller is fixedly connected onto the cylindrical rod; a 360-degree high-pressure nozzle is communicated with high-pressure water. The device disclosed by the invention is simple in structure, the roller tangential to the cam is pushed to drive the 360-degree high-pressure nozzle to reciprocate by rotating the cam, high-pressure water flow ejected by the 360-degree high-pressure nozzle accords with field irrigation landform by changing the outer contour of the cam and the point of tangency of the roller, waste of water resources is avoided, the condition that lots of irrigation water flows onto the road so as to influence the traffic is avoided, and the irrigation efficiency is improved. Moreover, the cam and roller subjected to one-step injection molding have light weight and are convenient to carry and labor-saving.

The invention relates to an appliance for vocal music teaching, and particularly to a portable vocal music box. The portable vocal music box comprises a box body, a drawer, walking wheels, a slide rail, a locking device, a storage battery and an illuminating device. The box body has a box-type structure. The side surface of the box body is provided with a rectangular hole. The drawer is mounted inthe rectangular hole through the slide rail, and is fixed to the housing through a locking device. The walking wheels are mounted at bottom of the housing. The top of the housing is provided with a handle and a pull rod. The inner part of the drawer is divided into a plurality of troughs by separator plates and baffle plates. The troughs are used for placing a music score stand, a tonometer, a metronome, a baton and a music score according to the spatial size. The portable vocal music box realizes high convenience and labor-saving effect in carrying, taking and placing the vocal music tools.Different vocal music tools are placed in specifically designed troughs so that personnel who perform vocal music teaching and vocal music performance can place professional objects in a more standardmanner, thereby realizing easy checking and no easy omission of the vocal music tools. The appliance is provided with the storage battery which can perform charging on equipment such as mobile phone,the tonometer and the metronome, and furthermore supplies electric power to the illuminating device.

The invention discloses a cargo handling trolley based on the logistics industry, which includes a car plate, a front wheel, a rear wheel, a driving motor, a controller, a left side plate, a right side plate, an auxiliary plate, a bracket and a handle; the front wheel, The rear wheels are respectively installed on the front and rear sides of the bottom of the vehicle board. The vehicle board is provided with a drive motor connected to the rear wheels. The drive motor is connected to a controller. The left side board and the right side board are connected to the car board The left and right sides of the auxiliary plate are connected to the front end of the vehicle plate through hinges, the left and right end surfaces of the vehicle plate are provided with shackles, and the left and right end surfaces of the auxiliary plate are provided with shackles that match the shackles. The auxiliary plate is provided with a roller shaft group. The invention has the advantages of simple structure and convenient use, which is beneficial to improving work efficiency.

The invention relates to the field of outer wall detection, in particular to an outer wall thermal insulation performance detection method which comprises the following steps: S1, fixing: an outer wall is fixed on a fixing seat through a fixing assembly; S2, conveying is conducted, specifically, a fixing base slides through a conveying rail, and therefore the outer wall is conveyed to the position between a hot box and a cold box; S3, sealing is conducted, specifically, the opening face of the hot box, the opening face of the cold box and the side wall of the outer wall are sealed through a clamping assembly; and S4, detection is conducted specifically, the temperature in the hot box and the temperature in the cold box are detected through a detection assembly, so that the thermal insulation performance of the outer wall is calculated. The method has the effect of facilitating outer wall carrying of workers.

The invention discloses a portable bicycle auxiliary power device, and relates to the technical field of bicycle auxiliary power devices. The portable bicycle auxiliary power device comprises a powermechanism and a control mechanism. The power mechanism comprises an auxiliary power device body. Sleeve rods are arranged at the positions, close to the two sides, of the auxiliary power device body and are internally provided with telescopic rods. One ends of the telescopic rods are provided with clamping blocks. The auxiliary power device body is provided with a holding clamp fixing frame. The holding clamp fixing frame is provided with an electron speed regulator and a gear motor. The gear motor is provided with a flexible friction wheel. The control mechanism comprises a potentiometer anda rotary knob accelerator switch. The rotary knob accelerator switch is mounted on the potentiometer. According to the portable bicycle auxiliary power device, brand new design is adopted, the weightof the portable bicycle auxiliary power device does not exceed 2.5 kg, and thus carrying is convenient and capable of saving labor; the portable bicycle auxiliary power device is located at the position, close to the top, of a rear wheel of a bicycle, a user cannot touch the portable bicycle auxiliary power device easily, and thus safety is high; the portable bicycle auxiliary power device is highin stability, and the problems of magnetism leakage, short circuit and the like cannot occur; and the portable bicycle auxiliary power device is convenient to mount and dismount, and the mounting anddismounting time does not exceed two minutes for a normal user.

The invention discloses sulfur fumigating and processing equipment of fruits and vegetables convenient to dry. The sulfur fumigating and processing equipment comprises a sulfur fumigating chamber anda movable article rack, wherein a combustion chamber is arranged on the side wall of the sulfur fumigating chamber; a gas circulation mechanism is arranged on the sulfur fumigating chamber; a movablegate group is arranged on the side wall of the sulfur fumigating chamber; and a reaction box is arranged at the top of the sulfur fumigating chamber. According to the sulfur fumigating and processingequipment disclosed by the invention, the article rack is arranged, so that fruits and vegetables can be effectively loaded, and can be arrayed tidily on the article rack for drying, besides, the article rack can be easily moved, the carrying efficiency of the fruits and vegetables is improved, and the drying efficiency is improved.

The invention discloses an electric pedal sewing machine. The electric pedal sewing machine comprises a base, wherein a take-up box is fixedly installed on the outer surface of one side of the base, and a rotating platform is fixedly mounted on the inner surface of one side of the take-up box; a rotating wheel is movably mounted in the rotating platform; a connecting rod is fixedly mounted on theouter surface of one side of the rotating wheel; the outer surface of one end of the connecting rod is fixedly provided with a take-up rod; the outer surface of one side of the take-up rod is fixedlyprovided with a rotating handle; and the middle of the outer surface of the take-up rod is wound with an electric wire, and the outer surface of one end of the electric wire is fixedly connected witha plug. Through the arrangement of the take-up rod, the electric wire can be reasonably stored, so that the electric wire is prevented from being subjected to unnecessary abrasion; through a first combined plate, the first combined plate and a second combined plate can be combined together to form a grip, and a device can be carried conveniently; and by means of a limiting plate, so that stitchesare distributed more evenly and orderly on cloth.

The invention discloses a backpack type surveying and mapping device. The device comprises control equipment, a supporting rod, a data acquisition assembly and a carrying assembly, an interface is formed in a shell of the control equipment, the data acquisition assembly is arranged on the supporting rod, the end, away from the data acquisition assembly, of the supporting rod is installed on the shell, and the data acquisition assembly is electrically connected with the control equipment through the interface and used for acquiring surveying and mapping data and sending the surveying and mapping data to the control equipment. The carrying assembly comprises a back frame, the back frame is installed on the shell, and straps are connected to the back frame. According to the backpack type surveying and mapping device, the data acquisition assembly is installed on the shell of the control equipment through the supporting rod, surveying and mapping data collection is achieved, the back frameof the carrying assembly is installed on the shell of the control equipment, a worker can carry the whole surveying and mapping device through the straps on the back frame, carrying is convenient, labors are saved, and the worker can carry the surveying and mapping device on the back to carry out scanning and surveying and mapping indoors or in tunnels and other environments.

The invention provides a transporting device for wooden doors, and belongs to the technical field of machinery. The transporting device for the wooden doors solves the problem in the prior art that the stability is not high. The transporting device for the wooden doors comprises a blocky body, a connecting rod and an a roller, wherein the inner portion of the body is provided with a positioning cavity concave in a right triangle, the positioning cavity is internally provided with a contact part used for flexibly contacting the corners of the wooden door, the inner end of the connecting rod ishinged to the body, the outer end of the connecting rod is connected with the roller, and the roller is located on the lower portion of the body, a positioning mechanism is arranged between the connecting rod and the body, and when the roller is located on the lower portion of the body or on the side portion of the body, the positioning mechanism positions the connecting rod on the body. The stability of the transporting device for the wooden doors is high.