66results about How to "The solution cannot be adjusted" patented technology

The invention relates to a vehicle top frame, in particular to an adjusting structure of the vehicle roof frame. The invention mainly solves the technical problem that the automobile roof frame can not be adjusted in the prior art and provides the adjusting structure of the vehicle roof frame. The technical problem is solved mainly by the following technical proposal that the adjusting structure of the vehicle roof frame comprises a base and a frame and the base is arranged at two ends of the frame; the adjusting structure is characterized in that the adjusting structure also comprises an insertion part which is arranged at two ends of the frame; the base is fixedly connected with the insertion part; and the insertion part is provided with an adjusting control device. The adjusting structure solves the problem that the vehicle roof frame can not be adjusted, leads the distance between two bases of the vehicle roof frame to be adjusted freely, is conveniently to be installed on the vehicle roofs of various sizes, facilitates the purchasing and installation of the users and optimizes the use of the resource to maximum extent.

The invention discloses an adjustable heat dissipation structure for a new energy vehicle battery, includes two heat sink plates, The top between the two heat dissipation plates is fixedly connected by a connecting device, the surface of the heat dissipation plate is provided with a first heat dissipation hole, A dust-proof pad is fixedly connected to one side of the heat dissipation plate close to the connecting device, and a heat dissipation regulating device is fixedly connected to one side of the heat dissipation plate far away from the connecting device. The heat dissipation regulating device comprises a shell, wherein one side of the shell close to the heat dissipation plate is fixedly connected to the heat dissipation plate, and a visible glass window is fixedly connected to the groove at the top of the shell. As that heat dissipation regulate device is arranged, The invention solves the problem that the traditional heat dissipation structure of the new energy vehicle can not beadjusted, and can adjust the position of the heat dissipation fan according to the position of the heat dissipation hole of different types of the new energy battery, thereby achieving the effect ofmatching the heat dissipation area with the new energy battery, improving the use limit of the heat dissipation and realizing the flexible use.

The invention relates to the technical field of automobile spare parts and discloses a disc brake for an automobile braking system. The disc brake comprises a brake disc, the front face of the brake disc is fixedly provided with a wheel flange, the front face of the wheel flange is fixedly provided with a dust cover, and the front face of the wheel flange is fixedly provided with four hub bolts located on the periphery of the dust cover. According to the disc brake for the automobile braking system, a resetting device is movably connected between a first braking friction piece and a second braking friction piece in a sleeved manner, one end of a third nut is connected with a guide pin in a threaded manner, one end of the guide pin is fixedly connected with a gasket in a sleeved manner, theside face of the gasket is movably connected with a first spring in a sleeved manner, the other end of the first spring is fixedly connected with a sliding block, and the sliding block is movably connected outside the guide pin in a sleeved manner. By means of the disc brake, after braking is finished, the first braking friction piece can reset rapidly, the situation that the first braking friction piece continuously rubs with the brake disc to cause abrasion and lower the service life is prevented, therefore the problem that the friction pieces cannot reset rapidly is solved, the service life is prolonged, and the safety of an automobile is improved.

The invention discloses distributing equipment, combined distributing equipment and distributing method thereof. The distributing equipment includes a transmitting device, a tray, a hopper and a bunker, wherein the transmitting device includes first, second and third conveyer belts and first, second and third driving motors driving the first, the second and the third conveyer belts respectively; the first conveyer belt receives materials and transmits the materials to the hopper through the second and the third conveyer belts; the first conveyer belt can positively or reversely transmit the materials; and the first driving motor is a variable frequency motor. According to the distributing equipment of the embodiment provided by the invention, as the first conveyer belt can positively or reversely transmit the materials, and the first driving motor is the variable frequency motor, the flow velocity of the materials can be adjusted according to the particle sizes of the materials, the problem that the feeding flow rate can't be adjusted is solved, and therefore the failure shut-down of the whole distributing system caused by overlarge material flow rate is avoided.

The invention provides a variable-amplitude limiting device and a crane. The variable-amplitude limiting device comprises a switching element, a first stopping block (12) capable of with adjustable position and a second stopping block (13) with adjustable position. The variable-amplitude limiting device also comprises a connection piece (14) and a force applying part (15), wherein the connection piece (14) and the force applying part (15) are respectively arranged on two sides of the switching element and drive the switching element to do variable-amplitude region motion limited by the first stopping block (12) and the second stopping block (13); when touching the first stopping block (12), the switching element sends out a first limiting signal; and when touching the second stopping block (13), the switching element sends out a second limiting signal. By adopting the variable-amplitude limiting device, the problem that the variable-amplitude limiting device in the prior art cannot be adjusted can be solved.

The invention discloses an environmental design landscape sample display stand. The display stand comprises a base, the base is of a hollow structure, and a display stand body is movably installed atthe top side of the base; an adjustment block is fixedly installed at the top side of the display stand body, a circular hole is formed in one side of the adjustment block, and a fixing plate is fixedly installed in the circular hole; a motor is fixedly installed at one side of the fixing plate; a rotation shaft is fixedly installed on an output shaft of the motor through a first shaft coupler, the end, away from the motor, of the rotation shaft extends out of the circular hole and is fixedly provided with a rotation disc, and a first circular column is fixedly installed at the side, away fromthe rotation shaft, of the rotation disc. The landscape sample display stand is simple in structure, the adjustment rod moves up and down to drive the display stand body to move, and the problem is effectively solved that the angle of the display stand body cannot be adjusted; an L-shaped rotation rod rotates to drive a second connection rod to move, the second connection rod moves to drive a first extrusion plate to move, and the problem is effectively solved that landscape samples different in size cannot be placed. The display stand is convenient to use.

The invention belongs to the technical field of punching and manufacturing of metal plates and particularly relates to a stabilizing pin for a formed metal plate. The stabilizing pin is characterized by comprising a carrier, a conical head threaded rod and a locating pin, a threaded hole and a locating pin mounting hole are formed in the axial direction of the carrier, the locating pin mounting hole is formed in an eccentric mode, a step table is arranged in the locating pin mounting hole, the locating pin enters the locating pin mounting hole from the bottom of the carrier and is fixed through a screw plug, a cavity is formed in the back of the locating pin, a spring is arranged in the cavity, the bottom of the spring abuts against the screw plug, the side face of the carrier is provided with a steel ball mounting hole, the steel ball mounting hole is communicated with the threaded hole, and the front face of the conical head threaded hole is screwed into the threaded hole and tightly presses a steel ball arranged in the steel ball mounting hole. The stabilizing pin for the formed metal plate is simple in structure, convenient to install, capable of effectively solving the problem that a part formed through stretching jumps on a blank holder, and capable of improving the debugging efficiency of a die and ensuring the punching stability of the die.

An adjustable pipe flange bracket comprises a flange plate installed on a flange, a vertical pipe installed below the flange plate vertically, and a base arranged under the vertical pipe in a sleevedmanner, wherein the flange plate is provided with a plurality of bolt holes connected with the flange; the base is adjustable, and comprises a first baseplate, and a second baseplate arranged below the first baseplate at a certain distance; and the first baseplate and the second baseplate are connected by bolts, and regulated and fixed through regulating nuts. According to the adjustable pipe flange bracket, not only can a pipe flange, a valve, a filter and other devices be supported, but also the lifting height can be regulated freely; the problem that an existing bracket can not be regulatedis solved; meanwhile, removal and installation of subsequent pipes in pressure test, rinsing and airtight stages as well as maintenance and replacement of the valve, the filter and other devices arefacilitated greatly.

The invention discloses a cutting device capable of changing operating position. The device comprises a box body, wherein a fixing block is fixedly connected to the left side of the bottom part of theinner wall of the box body; a chute is formed in the top part of the fixing block, and a sliding block is in sliding connection with the inner part of the chute; a toothed plate is fixedly connectedto the top part of the sliding block, and a pushing rod is fixedly connected to the left side of the toothed plate; a first spring sleeves the surface of the pushing rod. According to the device, thebox body, the fixing block, the chute, the sliding block, the toothed plate, the pushing rod, the first spring, a pulling plate, a gear, a cam, a rotating plate, a support, a roller, a transmission hole, a connecting rod, a sliding sleeve, a clamping rod, a transmission rod, a bearing, a rotating shaft, a circular plate, a clamping groove and a cutting device body are used in match, and thus the problem that the operating position of an existing cutting device cannot be adjusted can be solved. The device has the advantages that the operating position can be adjusted, so that a user can use conveniently, and the practicability is improved.

The invention discloses a peak current detection compensation circuit and a peak current detection compensation method. The peak current detection compensation circuit comprises a switching tube, a current sampling circuit and a comparator, wherein the current sampling circuit is electrically connected with the switching tube and used for sampling current passing through the switching tube or an inductor; the sampling output end of the current sampling circuit outputs a sampling signal; the first input end of the comparator is connected with the sampling end of the current sampling circuit while the second input end of the comparator is connected with a dynamic reference signal; the dynamic reference signal is accordingly adjusted according to a comparison result between the peak value of the sampling value and a preset threshold value; when the sampling signal is greater than the dynamic reference signal, the output end of the comparator outputs a switching tube disconnecting signal; the peak current detection compensation method comprises the steps of obtaining the sampling signal; comparing the peak value of the sampling value with the preset threshold value, and outputting the dynamic reference signal; comparing the sampling signal with the dynamic reference signal, and when the sampling signal is greater than the dynamic reference signal, outputting the switching tube disconnecting signal.

The invention discloses a medicine bottle auxiliary suspension device for patient infusion. The medicine bottle auxiliary suspension device for patient infusion comprises a base, a control box, a switch, an electric push rod and a water level sensor, wherein a protective shell is fixed at the top end of the base, the electric push rod is fixed at the top end of the base inside the protective shell, a rack is fixed at the top end of the electric push rod, a first rotating rod is movably connected to the base in front of the right side of the electric push rod through a bearing, a transmission mechanism is arranged at the upper end of the outer side of the first rotating rod, clamping devices are arranged on the protective shell below two sets of first clamping blocks, and detection adjusting devices are symmetrically arranged on the left side and the right side of the top end of a sixth fixed connecting rod. According to the medicine bottle auxiliary suspension device, when a nurse is busy and does not replace medicine in time, an infusion tube can be locked, the circumstances that blood in the body of a patient flows back into the infusion tube, and discomfort is brought to the patient are prevented, the practicability of the whole device is improved, when medical staff are busy, the medical staff do not need to replace the medicine too urgently, and thus, the medicine bottle auxiliary suspension device for patient infusion brings convenience for the medical staff when used.

The invention discloses a supporting frame used for mining excavating equipment. The supporting frame comprises a base. A movable plate is arranged above the base. Two sliding grooves are symmetrically formed in the upper surface of the base. The bottom surface of the movable plate is fixedly connected with two sliding blocks which are arranged symmetrically, and the ends, away from the movable plate, of the sliding blocks are clamped into the corresponding sliding grooves. A through hole is formed in the front face of each sliding block. A groove is formed in the upper surface of the base. The bottom surface of the movable plate is fixedly connected with a movable block. A threaded pipe is fixedly embedded in the front face of the movable block. According to the supporting frame used forthe mining excavating equipment, by arranging supporting rods, a supporting platform can be made more stable and prevented from inclining in the rotating process, and the supporting frame is made moredurable; and by arranging a first bearing and a third bearing which are used cooperatively, the threaded rod can rotate more smoothly, clamping stagnation in the rotating process of the threaded rodis prevented, and the service life of the supporting frame is prolonged.

The invention provides a mechanical equipment hoisting frame convenient to disassemble and assemble. The mechanical equipment hoisting frame convenient to disassemble and assemble comprises a base, moving wheels, a height adjusting frame structure, an adjustable hoisting frame structure, a defensing hoisting hook device, a hand-tight bolt structure, a bearing plate, a reinforcing brace, a motor seat, a control switch, an electric hoist, an oil wire rope, a pulley, a limited wheel, a connecting plate, a U-shaped buckle and a bearing frame. According to the mechanical equipment hoisting frame convenient to disassemble and assemble, the arrangement of a handle, a threaded rod and an anti-skidding sleeve facilitates the manual disassembly or assembly of the mechanical equipment hoisting frameconvenient to disassemble and assemble by a worker and solves the problem that the hoisting frame is convenient to disassemble; a limited inserting rod is movably inserted in a limited hole formed inthe middle of the right side of the front surface of a telescopic link, thus facilitating the worker to adjust the length of the hoisting frame according to hoisting requirements and solving the problem that the length of the hoisting frame cannot be adjusted; and the arrangement of a rainproof cover facilitates the hoisting frame to resist rain for hoisting mechanical equipment in cloudy and rainy weather and solves the problem that the hoisting frame cannot resist rain for the hoisting equipment.

The invention discloses a magnetic suspension thrombelastogram instrument and belongs to the technical field of medical apparatus and instruments. The instrument comprises a shell, a rack, a plurality of detection devices and transmission devices corresponding to the detection devices one by one, and also comprises an axial magnetic suspension mechanism, a radial magnetic suspension mechanism and a magnetic flux detection device which are sequentially arranged at the periphery of a probe rod in a sleeving manner. The magnetic suspension thrombelastogram instrument disclosed by the invention adopts a magnetic suspension structure, and the problems in the traditional equipment that an overhung wire is difficult to machine, the quality is difficult to guarantee, the manufacturing cost is relatively high and the like are solved; and moreover, a torsion state of the overhung wire is simulated by utilizing a pair of radial magnets, the torsion rigidity of the overhung wire is changed by accurately adjusting the distance of the radial magnets, and the problem that the parameters of the overhung wire cannot be adjusted after the overhung wire is completely machined is solved.

The invention discloses a temporary rain sheltering awning for goods at an entrance and exit. The temporary rain sheltering awning comprises a base, wherein supporting legs are fixedly installed at the four corners of the bottom of the base, a moving mechanism is arranged in the base, two sleeves are symmetrically and fixedly installed at the top of the base, sliding rods are slidably connected into the two sleeves, a bearing plate is fixedly mounted at the tops of the sliding rods, a height adjusting mechanism is arranged between the base and the bearing plate, supporting rods are fixedly mounted at the front end and the rear end of the top of the bearing plate correspondingly, first baffles are hinged to the two sides of the top ends of the two supporting rods through hinge bases correspondingly, angle adjusting mechanisms are arranged between the first baffles and the supporting rods, two second baffles are slidably connected into each first baffle, and double-rotor motors are fixedly installed in the first baffles. The invention relates to the technical field of rain sheltering awning, the structure is simple, the operation is convenient, and the practicability of the rain sheltering awning is improved.

The present invention discloses a regulation device and a spectrograph. The regulation device comprises: a regulation rack configured to regulate positions of optical fibers and slits of a regulationdevice; and a regulation rack connection sleeve connected with an optical fiber module and a slit module which are installed at the same pedestal of the regulation rack. The spectrograph comprises theregulation device mentioned above. Through the technical scheme, the positions of the optical fibers and slits can be regulated to improve convenience and precision of regulation.

The invention discloses a crawler-type high-efficiency spraying vehicle, which includes a vehicle frame, the bottom of the vehicle frame is movably connected with a walking crawler, the left side of the top of the vehicle frame is fixedly connected with an engine, and the top of the vehicle frame is located at The right side of the engine is fixedly connected with a hydraulic rod, the top of the hydraulic rod is fixedly connected with a seat, the top of the vehicle frame is fixedly connected with a strut on the right side of the seat, and the top of the strut is fixedly connected with a control panel. The present invention uses a control panel, a ton bucket, a bearing, an electric telescopic rod, a first motor, a driving gear, a driven gear, a base, a water pump, a first hose, a second hose, a spray pipe, a second motor, and a transmission rod. Used in conjunction with the stirring blade, it can not only adjust the angle of spraying, but also can stir the liquid medicine inside the ton bucket while spraying the medicine, so that the medicine will not settle, which improves the efficiency of spraying medicine and ensures the spraying effect. Effect.

The invention relates to the technical field of gardens, in particular to a movable garden greening device. The movable garden greening device comprises an L-shaped plate, wherein the lower ends of electric telescopic cylinders are connected with a roller U-shaped rack through supporting rods, the roller U-shaped rack is connected with rollers through shaft bodies, the middles of two supporting rods are connected through a cross rod, second slide blocks are symmetrically arranged on two sides of the cross rod, second slide grooves matched with the second slide blocks are formed in the inner sides of the electric telescopic cylinders, a blanking port is formed in the lower end of a material storage hopper, the cross rod penetrates through the blanking port, and the blanking port extends to the lower end. Compared with existing technical advantages, the practicability of the device is greatly improved, the problem that adjustment cannot be achieved in the prior art is solved, meanwhile garbage can be handled in a unified mode, the labor amount of workers is decreased, and the phenomenon that the labor amount is increased due to the fact that tree leaves fall everywhere does not occur. Compared with the prior art, the device has obvious technical advantages and is worthy of future popularization and usage.

The invention discloses an oral electric cleaner. The oral electric cleaner is characterized by comprising comprises a handle outer shell, an insulating inner shell, a motor, a speed change mechanism,a transmission shaft sleeve, a transmission shaft, a hose, a steering transmission mechanism, an angle adjusting mechanism and an eccentric joint; an output end of the motor is connected with the transmission shaft through the speed change mechanism; the steering transmission mechanism comprises an input shaft, an input shaft bracket, an input cross shaft, an intermediate shaft, an output shaft,an output shaft bracket and an output cross shaft; the input shaft bracket is connected with the output shaft bracket through the angle adjusting mechanism; the angle adjusting mechanism comprises a connecting rod, a first gear, a second gear, a first hinge shaft, a second hinge shaft and a screw. The oral electric cleaner disclosed by the invention can simultaneously meet the performance requirement that the input shaft can still drive a cleaning head to normally work after an angle and a direction of the output shaft are adjusted.

The invention relates to an automobile brake system. The bevel gear drive adjusting type brake system for the new energy automobile comprises a jacking rod, a pedal, a brake reinforcement hydraulic cylinder, a brake reduction hydraulic cylinder, a bi-directional hydraulic pump, a driven bevel gear, a drive bevel gear, an adjustable-speed motor which drives the drive bevel gear, a control module and a speed sensor which detects the speed of the jacking rod. A rod cavity of the brake reinforcement hydraulic cylinder communicates with a rod cavity of the brake reduction hydraulic cylinder through a pipeline, and a rodless cavity of the brake reinforcement hydraulic cylinder communicates with a rodless cavity of the brake reduction hydraulic cylinder through the bi-directional hydraulic pump. The driven bevel gear and a rotating shaft of the hydraulic pump are connected together, and the drive bevel gear and the driven bevel gear are engaged together. The bevel gear drive adjusting type brake system for the new energy automobile has the beneficial effects that the feeling of extruding the pedal can be automatically adjusted in use, and the problem that an existing brake pedal feeling cannot be adjusted later is solved.

The invention discloses a pile hole diameter detection device for highway engineering construction. The device comprises a vertical cylinder and a control terminal; the control terminal is arranged above the front end of the vertical cylinder; a rotating device is installed at the top end of the vertical cylinder; the rotating device comprises a sleeve, a rotating shaft, a first bevel gear, a rotating handle, a second bevel gear, and a spirit level; and the lower end of the outer wall of the first bevel gear is engaged with the second bevel gear. The pile hole diameter detection device for highway engineering construction is scientific and reasonable in structure and safe and convenient to use; and through the cooperation of the rotating handle, the second bevel gear, a second threaded rod, a square cylinder, a laser probe and the control terminal, the rotating handle is rotated, and the rotating handle drives the second threaded rod to rotate through the second bevel gear; the secondthreaded rod enables the square cylinder and the laser probe to move downwards through threads, and a user can observe the size change of apertures of different depths through the numerical value of the control terminal, so that the problem that in the prior art, measured data are not comprehensive enough is solved.

The invention provides a width-variable wood-plastic door pocket assembly, belongs to the technical field of wood-plastic door pockets, and particularly relates to the field of width-variable wood-plastic door pocket assemblies. In order to solve the problems that in the installation process of an existing wood-plastic door pocket, the size cannot be adjusted, the installation operation is complex, the destructive effect and the loss are high when the door pocket is replaced and disassembled, and the overall disassembled parts are scrapped and cannot be recycled, the width-variable wood-plastic door pocket assembly comprises an L-shaped profile a, Z-shaped connecting pieces, an L-shaped profile b, an I-shaped pluggable profile and an adjustable insertion cover part. According to the door pocket assembly, barbs and barb non-return parts or magnetic parts or other non-return parts are arranged on the L-shaped profile a and the adjustable insertion cover part so that the width can be adjusted, the problem that in the prior art, the width of the door pocket cannot be adjusted is solved, the problem that the door pocket needs to be manufactured again due to few size deviations is prevented, and unnecessary economic losses are reduced.

The invention discloses a stylistic instruction display device which comprises a display board. The two sides of the display board are each provided with a telescopic groove. An inner cavity of each telescopic groove is movably connected with a telescopic plate. One side of each telescopic plate penetrates out of the corresponding telescopic groove and is fixedly connected with an installation frame. The two sides of the top and the bottom of the display board are each fixedly connected with a T-shaped block. The top and the bottom of an inner cavity of the installation frame are each providedwith a T-shaped groove matched with the corresponding T-shaped block. Through the cooperation of a locking block, a rotating rod, a threaded pipe, a threaded rod, a first movable block, a second movable block, a clamping block, a connecting rod and a baffle, the problem that the display area of an existing stylistic instruction display device cannot be adjusted is solved; the stylistic instruction display device has the advantage of being adjustable in display area; the display area of the display device can be conveniently adjusted by a user, the practicability of the stylistic instruction display device is improved, and the stylistic instruction display device is worthy of popularization.

The invention relates to the technical field of commodity wholesale, and discloses a moisture-proof device of an adjustable cabinet plate for commodity wholesale storage. The left and right ends of a supporting strip are movably connected with sliding blocks, and the middle of each sliding block is movably connected with a main shaft. According to the moisture-proof equipment with the adjustable cabinet plate for wholesale and storage of the commodities, a spindle is electrified to drive a rotating shaft to rotate anticlockwise, the rotating shaft drives a sharing shaft to rotate synchronously when rotating anticlockwise, the sharing shaft drives a supporting rod to move, and the supporting rod is connected with a mounting shaft through a swinging wall, so that certain stable acting force is exerted on the equipment, and the equipment is prevented from deviating; and under the cooperative use effect of the supporting rods and the swinging walls, the sharing shafts gradually move towards the outer side, the angle is larger and larger, and the goods shelf plate at the upper end is pushed to the highest position, so that the equipment has an automatic adjusting function, the problem that a traditional goods shelf cannot be adjusted is solved, and goods can be better stored.

The invention discloses an adjustable containing support for bearing machining. The adjustable containing support comprises a base and a supporting plate, sliding holes are formed in the surface of the supporting plate, sliding rods are fixedly connected to the two sides of the top of the base, the tops of the sliding rods penetrate the sliding holes and extend to the exterior of the supporting plate, vertical plates are fixedly connected to the two sides of the top of the base, connecting plates are arranged in inner cavities of the vertical plates, and pull rods are fixedly connected to thesides, far away from the supporting plate, of the connecting plates. The adjustable containing support is provided with the sliding holes, the sliding rods, the vertical plates, the connecting plates,the pull rods, springs, wedge blocks, supporting blocks, sliding grooves and sliding blocks to be in cooperation, and the problem that an existing containing support for bearing machining cannot be adjusted is solved; and the adjustable containing support for bearing machining has the advantage of being adjustable, the working efficiency of a worker is improved, the working strength of the workeris reduced, use is convenient, operation is simple, use by people is facilitated, and the containing support is worthy of popularization.

The invention discloses a precise hole sowing machine for grass seeds. The precise hole sowing machine comprises a rack, a plurality of hole sowing devices installed on the rack and a traction mechanism arranged at the front end of the rack; each hole seeding device includes a hole forming device, a transmission device, a sowing device and a soil-covering suppression device mounted on a fixing frame; each hole forming device is located in front of the corresponding fixing frame; each sowing device is located in the middle of the corresponding fixing frame; each soil-covering suppression devicecomprises a soil covering device and a suppression wheel mounted on the corresponding fixing frame and located behind the corresponding sowing device; each transmission device comprises a drive wheelarranged on one side of a roller, a transmission shaft arranged between the corresponding hole forming device and the corresponding sowing device, transmission wheels arranged on both sides of the transmission shaft and a driven wheel arranged on one side of a stirring shaft; the transmission wheels arranged on both sides of each transmission shaft are respectively connected with the driving wheel and the driven wheel through transmission chains; and a discharging control mechanism is disposed on each transmission shaft.

The invention discloses welding equipment. According to the welding equipment, the problem that a welding gap between two round tubes cannot be adjusted during existing round tube welding is solved through a clamping device. A plurality of round tubes to be welded are clamped through a first clamping assembly and a second clamping assembly, the second clamping assembly is driven by a lifting assembly to move upwards, and the second clamping assembly is driven by an overturning assembly to overturn by 180 degrees. Multiple round tubes are clamped at the same time through the first clamping assembly, the problem that an existing welding machine cannot clamp the multiple round tubes at the same time is solved, a clamping oil cylinder is used for driving a driving clamping block to move in the direction close to an initial clamping block, springs A, a spring B and a spring C are compressed, transition clamping blocks are driven to move in the direction close to the initial clamping block, and the multiple round tubes are clamped at the same time; the lifting assembly drives the second clamping assembly to move up and down, so that the welding gap is adjusted; and a pair of welding devices each complete 180-degree welding of an annular welding joint, and weld the front half part and the rear half part of the annular welding joint correspondingly.

The invention relates to the field of electronic commerce, in particular to an indoor shopping mall positioning and shopping guide system. A support is fixedly connected with a base, a lifting block is slidably connected with the support, a lifting motor is fixedly connected with the base, a ball screw is fixedly connected with an output shaft of the lifting motor and is in threaded connection with the lifting block, and a first motor is arranged on the lifting block; and a first supporting seat is fixedly connected with an output shaft of the first motor, the first motor rotates to enable the supporting seat to rotate left and right, a second motor is arranged on the first supporting seat, a second supporting seat is fixedly connected with an output shaft of the second motor, a shopping guide assembly is arranged on the second supporting seat, and the second motor is rotated to drive the shopping guide assembly to obliquely rotate up and down. When a user gets close, the first motor can be adjusted to drive the first supporting seat to face the user, then the lifting motor can drive the lifting block to be adjusted to a proper height, the second motor rotates to be adjusted to a proper inclination angle, and therefore users of different heights can use the system conveniently.