143results about How to "Reduce physical exertion" patented technology

The invention discloses an exoskeleton robot abnormal working condition automatic response and risk avoiding decision-making method, and relates to the technical field of exoskeleton, and the method comprises the steps: deploying a plurality of types of sensors to synchronously collect environment data, human physiological data and exoskeleton operation data, and carrying out the preprocessing to remove interference; through fusion of abnormal harmonic detection and a finite-state machine, dangerous working conditions such as wind speed abrupt change are identified, and grades are judged; monitoring eye movement and heart rate variability data in real time, quantifying cognitive load and grading; a decision rule base is constructed, and joint locking and other adaptive risk avoiding decisions are generated in combination with working condition types, grades and cognitive loads; the controller drives the execution mechanism to execute a decision, continuously monitors data at a frequency, dynamically adjusts the decision or recovers a normal mode. According to the method, dangerous working conditions are accurately identified through multi-source data fusion, adaptive risk avoiding measures are automatically triggered, a power assisting strategy is dynamically adjusted in combination with cognitive loads, and operation flexibility and physical output are balanced.

The utility model discloses a movable auxiliary support material rack for packaging, decorating and printing, which comprises a flat plate, a control cabinet is fixedly mounted at the rear end of the outer surface of the upper end of the flat plate, and a lifting material rack is fixedly mounted in the middle of the outer surface of the upper end of the flat plate. The lifting material frame comprises a top support, a side face support, a hydraulic rod, a lifting plate, a cantilever, a threaded hole, a sliding block, a reinforcing plate and a concave sliding rail, first limiting grooves are formed in the left side and the right side of the front end of the outer surface of the upper end of the flat plate, a second limiting groove is formed in the middle of the outer surface of the upper end of the flat plate, and the number of the first limiting grooves is two. According to the movable auxiliary supporting material frame for packaging, decorating and printing, through the arrangement of the lifting material frame, lifting of materials is facilitated, consumption of physical strength of workers is reduced, the feeding efficiency is improved, through the arrangement of the material blocking shaft, limiting of the materials is facilitated, and the safety is improved.

This invention discloses a land surveying and measurement device and its usage method, relating to the field of land surveying technology. It includes a surveying instrument and a tripod assembly and an adjustable toe assembly that provide support for the instrument. The adjustable toe assembly can be switched to adapt to the setup needs of hard and soft ground. The adjustable toe assembly includes a foot spike unit, a rubber foot unit, and a quick-lock unit. This invention, by setting up an adjustable toe assembly, allows for purely foot-based operation: stepping on a second pedal to lower and lock the instrument, and stepping on a linkage deflection component to unlock and reset it. Combined with the fact that the hands only need to lift and lower the support frame, it completely liberates the surveyor's waist. In long-distance operations with frequent terrain changes, it significantly reduces physical exertion. Furthermore, through the linkage structure of the "pedal + quick-lock unit," the lowering and locking or unlocking and resetting of the rubber foot covers can be completed simultaneously within seconds, greatly shortening the instrument setup time.

The waste liquid barrel comprises a barrel body, the top of the barrel body is detachably connected with a barrel cover, a discarding opening is formed in the barrel cover in a penetrating mode, an inner barrel is movably arranged in the barrel body, a spiral channel is defined in the inner barrel, openings communicated with the channel are formed in the two ends of the inner barrel in a penetrating mode, and the opening in the top of the inner barrel is communicated with the discarding opening. A sealing cover is detachably connected to an opening in the bottom of the inner barrel, a plurality of sieve holes are formed in the sealing cover in a penetrating mode, the pull rod is movably arranged on the inner barrel and the barrel cover in a penetrating mode, the first end of the pull rod penetrates and extends out of the barrel cover, a limiting assembly for limiting the pull rod is arranged on the barrel cover, and a pressing plate is fixedly connected to the second end of the pull rod; the pressing plate is arranged between the opening in the bottom of the inner barrel and the channel. The waste liquid barrel for the laboratory can play a role in ensuring that waste can be fully mixed with soaking liquid.

The utility model provides a kind of dissolution cup automatic cleaning device, belong to the technical field of dissolution rate instrument, including base, base is provided with the moving platform with lifting function, moving platform is provided with multiple stirrer shafts that can be driven to rotate, base is provided with self-cleaning mechanism, self-cleaning mechanism includes wastewater tank and water bath, water bath is provided with cover plate, cover plate is provided with multiple dissolution cup bodies at equal intervals, each dissolution cup body is provided with top cover, the lower side of top cover and through-hole are respectively provided with cleaning piece and suction pipe, by the utility model, after the end of dissolution rate experiment, dissolution cup can be cleaned automatically, replace the repeated operation of traditional manual pouring, cleaning one by one, avoid the problem of hard to take due to large capacity of dissolution cup, with liquid, and dissolution cup does not need to be taken out from water bath, eliminate the risk of dissolution cup breakage due to hand slip, to reduce the security risk caused by glass breakage and solution contact.

This utility model discloses a batching and mixing equipment for lithium slag building material production, including a mixer body. A spraying mechanism is installed at the upper end of the mixer body, and a discharge mechanism is installed on the side end of the mixer body. The mixer body includes a mixing tank, a stirring shaft, and a first motor. The first motor is fixedly installed at the bottom of the mixing tank, and a rotating shaft is installed on the output shaft of the first motor. The stirring shaft is fixedly installed on the rotating shaft. A support plate is installed on the upper end of the mixing tank. The spraying mechanism includes a chemical tank, a chemical supply pipe, a turntable, an angle adjusting rod, a submersible pump, and atomizing nozzles. The chemical tank is fixedly installed on the lower end of the mixing tank, and the bottom of the chemical supply pipe is connected to the outlet of the submersible pump. This utility model has the advantages of uniform spraying, wide coverage, and efficient and convenient discharge, solving the problems of uneven distribution of liquid additives and low discharge efficiency in traditional equipment.

This utility model discloses a lifting device for installing power equipment, relating to the field of lifting machinery technology. It includes a base plate, a lifting and pushing unit, and a support and clamping unit. This utility model can conveniently pull the device and the power device to be installed to a safe area, and has reliable lifting components, effectively saving the physical exertion of installation personnel. The movable wheel support at the bottom turns in place after reaching the installation position to face the unloading port towards the installation position of the external frame. Furthermore, when moving the power equipment, the movable ramp is pressed down and overlaps with the external installation frame, allowing the power equipment to gradually slide towards the installation position of the external frame under the push of the pusher, greatly improving the convenience of the power equipment transfer process. It also has a reliable support and clamping unit, which effectively ensures the stability of the device and the lifted power device during the lifting process.

The utility model discloses a roller brush, which belongs to the technical field of brushes and comprises a roller shell, a cavity filled with paint is arranged inside the roller shell, one end of the roller shell is fixedly connected with a roller main frame, the other end of the roller main frame is connected with a rotatable roller, and a connecting cavity is arranged inside the roller main frame. One end of the connecting cavity is communicated with the cavity, a through hole is formed in the end, close to the roller, of the roller main frame, the through hole is communicated with the other end of the connecting cavity, the through hole is formed above the roller, an operator can have a rest through the roller brush, meanwhile, paint can fall on the roller to be supplemented, and physical output is reduced; the method can be used for repairing both large-area places and small-area places, and is suitable for various use scenes.

And the heat exchange tube and the tube plate are sealed by the tube expanding device. Relates to the field of heat exchanger production equipment. Comprising a gun-shaped shell, a mounting rod is arranged at the transverse end of the shell, a hydraulic expansion head is rotationally connected to the end of the mounting rod, the operating platform comprises a platen and a sliding plate, and the platen and the sliding plate are connected through a hydraulic rod; a dovetail groove is formed in the top of the table plate, a bearing block is adaptively arranged in the dovetail groove, an insertion hole is formed in the top of the bearing block, and the vertical end of the shell is inserted into the insertion hole; and a universal wheel is arranged at each of the four corners of the bottom of the sliding plate. According to the device, physical exhaustion of operators can be reduced, the butt joint difficulty can be reduced, and the expansion joint efficiency is effectively improved.

The invention discloses a land surveying and mapping calibration device convenient to operate, and belongs to the technical field of land surveying and mapping calibration. A pressing plate is horizontally and fixedly mounted at the top end of the inserting rod, a mounting rod is vertically and fixedly mounted on the top wall of the pressing plate, and a marker post is arranged at the top end of the mounting rod; in the process that the threaded rod is rotated to adjust the height of the marker post, the piston rod moves downwards, on one hand, the deep anchoring clamping rod is mechanically driven to transversely stretch out to penetrate into soil according to the wedge-shaped principle, and deep anchoring is formed; on the other hand, the piston rod serves as an air pump piston to compress air in the cavity, the pneumatic telescopic rod on the earth surface is driven by the air supply mechanism to stretch and abut against the ground, and triangular support of the wide base is formed. The composite fixing mode of deep ground gripping and ground surface foundation expansion effectively solves the problem that a traditional surveying and mapping rod shakes due to the fact that the head is heavy and the bottom is light, additional power sources or tedious operation steps are not needed, and the stability of the device under wind interference or soft soil is remarkably improved.

The utility model relates to hoisting tool technical field, especially point to a kind of carrying hoisting tool in field operation without network power supply, solve the problem of inconvenient equipment disassembly and carrying, poor assembly convenience in prior art, including crane frame and crane chassis, be equipped with middle shaft outer sleeve pipe on crane frame, be equipped with chassis central shaft on crane chassis, chassis central shaft and middle shaft outer sleeve pipe plug-in cooperation, the length of chassis central shaft is less than one half of middle shaft outer sleeve pipe length;Rotary drive mechanism is equipped between crane frame and crane chassis;Crane frame is detachably connected with lifting arm, take-up assembly and power generation component on it.Affirmative effect is: reduce assembly labor intensity, improve field deployment efficiency, chassis central shaft length is designed as less than one half of middle shaft outer sleeve pipe length, only need to lift crane frame to slightly higher than chassis central shaft height during assembly, it can be realized that chassis central shaft and middle shaft outer sleeve pipe plug-in cooperation, without auxiliary equipment, substantially improve the deployment efficiency of field operation.

The utility model discloses a kind of efficient bath spray glaze surface treatment equipment, comprising: the feed pipe is set in the inside of spray glaze box by moving mechanism, the moving mechanism is by second motor, screw rod, limit rod and spray material pipe combination composition, the second motor is set on the inside of spray glaze box upper, and the output shaft of second motor is fixedly connected with screw rod, and screw rod is rotatably connected with spray glaze box;The inside of the spray glaze box upper is provided with waste gas treatment mechanism.This efficient bath spray glaze surface treatment equipment, when screw rod rotates, feed pipe will move, and feed pipe is slidably connected with limit rod, so feed pipe can move back and forth inside spray glaze box, to facilitate spray glaze, the opening of array distribution can absorb the air inside spray glaze box, prevent dust overflow, the air inside spray glaze box is absorbed to the inside of processing box, air will be discharged after the filtration of filter plate, beneficial to the respiratory health of worker.

The invention relates to a large-dip-angle fully mechanized coal mining face pedestrian assisting device and a control system, the large-dip-angle fully mechanized coal mining face pedestrian assisting device comprises a hydraulic support 10, an auxiliary walking device 20 is arranged on a base of the hydraulic support, the auxiliary walking device 20 is provided with a rack 21 and a walking belt 22, the rack 21 is provided with a transmission roller 23 and a hydraulic motor 24, the hydraulic motor 24 drives the transmission roller 23, and the transmission roller 23 is driven by the walking belt 22. The transmission roller 23 drives the walking belt 22 to move in the width direction of the hydraulic support. The auxiliary walking device has the beneficial effects that a plurality of auxiliary walking devices which are continuously arranged are adopted, a conveying channel capable of automatically walking is provided for underground constructors, physical output of advancing of the constructors can be remarkably reduced, and safety is improved. The control device can control automatic operation of the pedestrian assisting device according to the movement conditions of people and objects, operation safety is guaranteed, and operation consumption is reduced.

According to the pasty traditional Chinese medicine adjustable dosage feeding device suitable for cattle and sheep breeding, a medicine injection cylinder and a pneumatic system are arranged, the medicine injection cylinder is provided with an airtight section and a medicine storage section which are communicated, a piston is arranged in the medicine storage section in the axial direction, a guide rail is arranged outside the medicine storage section in the axial direction, and a first position sensor is arranged in the guide rail; a compressed air source of the pneumatic system is connected to the airtight section through a valve assembly, when the pneumatic system is used, the medicine storage section is filled with medicine, the compressed air source supplies air to the airtight section to push the piston so that the medicine can be pushed out of the medicine storage section, and when the piston moves to the first position sensor, the first position sensor sends out a signal to close the valve assembly; the piston is pushed by means of compressed air, so that compared with manual pushing, the piston has larger strength and speed, medicine feeding can be completed in a shorter time during medicine feeding, the time for struggling of livestock is shortened, and then physical exhaustion and injury risks of operators are reduced.

This utility model discloses a rail coating thickness measuring instrument, relating to the field of rail inspection technology. The instrument includes a mounting plate, a testing mechanism, and a positioning mechanism, with a rail body positioned below the mounting plate. The instrument moves along the rail body via casters on the mounting plate, eliminating the need for manual operation. This significantly reduces the physical strain and difficulty of prolonged hand-held operation and avoids positional shifts and data fluctuations caused by hand tremors, ensuring the stability and accuracy of coating thickness measurement data. It is particularly suitable for continuous testing of long-distance rails, minimizing interruptions. Simultaneously, guide wheels embedded in grooves on both sides of the rail body provide precise positioning for the thickness measuring instrument as it moves the mounting plate, preventing lateral shift during testing.

The utility model relates to exercise mouth -type device technical field discloses a kind of postoperative mouth-type device of burn patient face, including extrusion mechanism, mouth opening trainer, No. 2 bottom plate and fixed frame, the extrusion mechanism includes shell, the inside sliding joint of shell is provided with two fixed plates, two the fixed plate mutually close one side respectively fixedly set up No. 1 rack and No. 2 rack, the inside rotation of fixed frame is provided with two-way screw rod, the periphery of two-way screw rod is threadedly connected with two fixed frame, the opposite side of two the fixed frame is uniformly fixedly set up fixed column, the inside one side rotation of shell is provided with gear. In the utility model, the device when using, starting electric push rod can automatically carry out mouth opening training, it is favorable to reduce physical consumption, avoid reducing training effect, and the opening size of mouth opening trainer can be automatically adjusted by adjusting the length of electric push rod.

The utility model discloses a motor vehicle maintenance creeper mechanism which comprises a creeper body, connecting rods are fixedly connected to the two sides of the creeper body, adjustable moving assemblies are installed on the two sides of the bottom of each connecting rod, and each moving assembly comprises an adjusting sleeve fixedly connected to the bottom of the corresponding connecting rod. Adjusting sliding rods are movably arranged on the inner walls of the adjusting sleeves, moving wheels are installed at the bottoms of the adjusting sliding rods, and positioning sliding blocks are fixedly connected to the tops of the adjusting sliding rods. By arranging the height-adjustable moving assembly, the height of the lying plate can be rapidly adjusted through simple operation, maintenance workers can rapidly adapt to chassis with different heights, adjustment time and physical output are reduced, the maintenance workers can work at a more comfortable position due to the copper wire height adjustment function, and the maintenance efficiency is improved. And the working efficiency and the working quality are improved, so that the use flexibility of the lying plate is improved.

The utility model provides a kind of elevator telescopic door guide rail slot cleaning device, including fixed seat, the fixed seat inboard is slidably connected with lifting seat, the lifting seat inboard is rotatably connected with two-way screw rod, the two-way screw rod surface is equipped with moving frame, the lifting seat left side is fixedly installed with driving motor, the moving frame inboard is slidably connected with scraping member close to bottom, the lifting seat top is provided with dust collection assembly, the moving frame inboard is provided with driving assembly, device does not need artificial frequent adjustment posture or replacement tool, by electric telescopic link adaptation guide rail slot height, and scraping member can automatically reciprocating scraping dirt, still can be clamped after large sundries is conveniently taken out, substantially reduce the tediousness of manual operation, dust collection assembly can adsorb scraped dust and debris, each component cooperates to reduce cleaning omission, compared with traditional manual cleaning, can more comprehensively clean guide rail slot inboard.

The application belongs to the technical field of medical equipment, and discloses a clinical automatic feeding device, which comprises a shell, a movable assembly is arranged on the top of the shell, a display screen is arranged on the top of the movable assembly, disposable containing boxes are movably connected to the two sides of the shell, an installation assembly and a stirring assembly are arranged on the upper end of the movable assembly, and a connecting pipeline is movably connected to the bottom of the shell. The disposable containing box and the connecting pipeline are matched, so that the physical consumption of medical staff when feeding and administering medicine to patients is reduced, the medicine of patients is administered, the medicine or food can be controlled to flow out through a flow rate controller, the medicine and the food can be separately injected into the body of patients, the standard of eating some medicine before meals and eating some medicine after meals is met, the food is prevented from flowing out from the nasal gastric tube, and the physical consumption of medical staff when feeding and administering medicine to patients is reduced.

The utility model provides a kind of ladder type boom for transmission line insulator replacement, comprising, climbing assembly, including first pole body and first support being arranged on the first pole body;Fixed component, including second pole body, transmission part being arranged on the second pole body and first fixed part and second fixed part being respectively connected by thread in the two ends of the second pole body;The fixed component is fixedly connected with the first pole body by second pole body;And, operating assembly, with the transmission part of the fixed component is connected, and the drive of transmission part can be carried out by the operating assembly, drive second pole body rotates, so that the first fixed part and second fixed part can respectively relative motion relative to second pole body.The ladder type boom for transmission line insulator replacement, operating personnel can adjust the length of boom according to the work demand of day, combined with original replacement device, simple structure, easy to process.

The invention belongs to the technical field of gas flow meter pneumatic clamping, and discloses a movable gas flow meter pneumatic clamping lifting device which comprises movable rolling wheels, a base disc is fixedly installed above the movable rolling wheels, a gas pipeline bracket is fixedly installed above the base disc, and a gas pipeline is fixedly installed above the gas pipeline bracket. And a shear fork type assembly is fixedly mounted above the base plate. Compared with a traditional device, by means of the pneumatic clamping function, an operator can easily clamp and release a workpiece, the operation convenience is improved, a flowmeter can be lifted and moved more conveniently, the operator can control the position of the flowmeter at any time, the operation flexibility is further improved, rapid and efficient carrying can be achieved, and the working efficiency is improved. The assembling efficiency is improved, automatic operation can be achieved through a pneumatic control mode, physical output of operators is greatly reduced through the automatic operation, and the working efficiency and the comfort degree are improved.

The utility model discloses a front -drive type agricultural management machine. The front -drive type agricultural management machine includes frame, set up on the frame's steering mechanism and set up on the hydraulic steering ware of steering mechanism, be equipped with a pair of front walking wheel and a pair of rear walking wheel on this frame, and each front walking wheel includes ball cage and the tire of sleeve setting on the ball cage, and the pair of ball cage is equipped with the hydraulic steering cylinder subassembly of transmission connection with it, and the hydraulic steering ware is connected with hydraulic steering cylinder subassembly through first oil pipe and second oil pipe. Through being equipped with hydraulic steering ware on the steering mechanism, thereby the steering mechanism in the steering process, the hydraulic steering ware receives the mechanical steering signal of steering mechanism, and the hydraulic steering ware will receive the mechanical steering signal and turn into hydraulic steering signal, thereby can through the telescopic movement of control hydraulic steering cylinder subassembly, and the telescopic of hydraulic steering cylinder subassembly drives the rotation of front walking wheel, thereby realizes the steering of riding type agricultural management machine, and improved the convenience of steering.

This invention discloses a river-crossing lifting and rescue device, specifically relating to the field of rescue equipment technology. It includes a drive cylinder with a jet annular cylinder fixedly connected to its front end. A rescue module is located at the front end of the jet annular cylinder. The drive cylinder contains a high-pressure air tank and a line-retrieving mechanism. The high-pressure air tank is connected to the jet annular cylinder via an air supply pipe to provide air pressure to eject the rescue module. The line-retrieving mechanism includes a take-up roller and a servo motor that drives its rotation. A rescue rope is wound around the take-up roller. The river-crossing lifting and rescue device of this invention, by setting a rotatable line-retrieving mechanism, utilizes the cooperation of a lifting handle and a limiting plate with a cross-shaped limiting through-hole to allow the orientation of the take-up roller to be adjusted according to the usage scenario. This facilitates the rapid release and retrieval of the rescue rope, improving the operational flexibility and rescue efficiency of the device, and making it suitable for complex aquatic environments.

The utility model relates to lathe processing technical field discloses a four tooth plum blossom top socket special for large diameter cylindrical milling cutter, include: morse short taper handle top socket base, its inside is equipped with axial compression spring cavity, plum blossom top socket, coaxial sleeve is located in morse short taper handle top socket base front end, guide center, and the activity is penetrated plum blossom top socket center, and stretches into morse short taper handle top socket base, compression spring, set up in compression spring cavity, both ends respectively abut guide center tail end and compression spring cavity bottom. The four tooth plum blossom top socket structure of setting can effectively improve the machining precision. Through the four tooth plum blossom groove of plum blossom top socket front end and the end tooth shape matching of large diameter cylindrical milling cutter, ensure the stability and accuracy of clamping, thereby significantly reduce the radial runout, improve the machining precision.

The utility model relates to the technical field of press fitting of parts, in particular to a small press. Comprising a machining table, a lifting plate is arranged on the upper side of the machining table, supporting legs are fixedly connected to the positions, close to the four corners, of the bottom of the lifting plate, the lower ends of the four supporting legs are fixedly arranged on the upper surface of the machining table, and a servo electric cylinder is fixedly connected to the upper side face of the lifting plate; the lower end of a piston rod of the servo electric cylinder penetrates through the lifting plate and is fixedly provided with a pressing head. The brackets are arranged on the lower sides of the two handles, the moving mechanisms are arranged on the lower sides of the two brackets, when a workpiece subjected to press fitting needs to be discharged, a worker pulls the holding rod in the direction away from the servo electric cylinder, the brackets drive the handles to vertically and upwards move firstly and then drive the handles to transversely move, and then the workpieces are discharged. The workpiece placed on the object placing plate can be moved out of the press-fitting space under the servo electric cylinder, the direction of pulling the holding rod does not need to be changed by a worker in the discharging process, and the physical loss of the worker is reduced.

The utility model discloses a sewage recovery device for high-altitude highway construction, which belongs to the technical field of construction equipment and is provided with a sewage recovery device with three-stage filtration, a three-dimensional filter screen arranged in a first-stage filter tank is used for coarse filtration, namely, solid particles with the diameter larger than that of meshes are filtered out; the first-stage filtering device is used for filtering residual chlorine, heavy metal ions, organic pollutants, microorganisms and bacteria, the second-stage filtering device is used for filtering residual chlorine, heavy metal ions, organic pollutants, microorganisms and bacteria, the third-stage filtering device is an ultrafiltration membrane assembly, the ultrafiltration membrane assembly is used for deeper-stage filtering, and after third-stage filtering is completed, liquid flowing out of a filtered water outlet can be directly discharged. According to the sewage recycling device, all the filtering assemblies are of detachable drawer type structures, cleaning and replacement are facilitated for operators, the whole recycling device does not need to be cleaned, physical output of the operators for carrying equipment and cleaning sludge on the sewage recycling device is saved, and the operation efficiency is improved. And the working efficiency is improved.

The utility model discloses a kind of electric power use buried PE electric power pipeline, belong to PE electric power pipeline technical field.The device includes pipeline, and the pipeline one end coaxial fixed sleeve is connected with elastic joint, the elastic joint includes the fixed part of being fixedly arranged around the side surface of pipeline, and the connecting part not directly connected with the end of pipeline, and the outside sleeve of pipeline is connected with the tightening member for fixed connecting part.The utility model in use, elastic joint contains fixed part and connecting part, when connecting, complex operation is not needed, staff only needs to drag auxiliary belt, can easily drive connecting part to separate from fixed part, without laboriously manual turning, and then use tightening member to tighten, it can be.Connecting part is designed to be stacked outside the fixed part, which reduces the transportation space occupation and allows the staff to quickly turn the connecting part to the adjacent pipeline side to complete the connection. This simple connection method shortens the pipeline laying time and reduces the construction cost.

The utility model relates to the technical field of luggage rack discloses a high -speed rail luggage rack of drawing down, include: support frame, manual lifting mechanism, manual lifting mechanism sets up at the back of support frame, manual lifting mechanism is used for the lifting adjustment of support frame, the draw down protection mechanism, the draw down protection mechanism sets up on support frame, the draw down protection mechanism is used for the protection of goods on support frame. The utility model discloses the overall design of manual lifting mechanism, and the user can operate from the rotating lever, to rotate the screw rod, the screw rod rotates and drives the lifting plate seat to slide on the outer wall of track bar, and the lifting is carried out, thereby the height of support frame can be lifted and adjusted, and the user can place the article on the support frame, the convenience of use is improved, and the height is reduced, the physical exertion of user when holding the article can be reduced, and the safety when taking and placing the article is increased.