106results about How to "Control tilt angle" patented technology

The invention provides a multifunctional control device of a small waterline plane ship hydrofoil and column rudder, comprising two hydrofoils and a column rudder mechanism; each hydrofoil and the column rudder mechanism comprise hydrofoils; a hydrofoil strut fixed on the hydrofoil, two wing flaps symmetrically distributed on the hydrofoil and at the both sides of the hydrofoil strut and a column rudder arranged on the hydrofoil strut; two hydrofoils and the column rudder mechanism are respectively installed at the front part and the rear part of a small waterplane area twin-hull ship; two sheet bodies of the hydrofoil and the small waterplane area twin-hull ship are fixedly connected according to a certain installation angle; the hydrofoil strut is fixedly connected with a connection body at the upper part of the small waterplane area twin-hull ship. The multifunctional control device of the invention has multiple functions, can shorten transient time from hullborne operation to foilborne operation, weaken heave motion and pitching motion of the small waterplane area twin-hull ship, weaken rolling motion of the catamaran, control inclination angle of the ship, has course control function, can effectively shorten steering gyration radius, and improve the safety, navigability and maneuverability of the small waterplane area twin-hull ship.

The invention relates to a method for preparing microneedle-array based on inclined rotary substrate and lithography, belonging to the micro processing technology field. The method comprises: firstly adopting the inclined rotary substrate and lithography exposal to obtain an SU-8 three-dimensional micro structure, and utilizing the excellent pattern transferring capability and demoulding capability of the PDMS to fill the PDMS into the mould of the SU-8 three-dimensional micro structure, then obtaining, the PDMS cone microneedle-array after demoulding; or sputtering the deposited metal on the SU-8 three-dimensional micro structure and then adopting the metal as a seed layer for electroform to obtain the cone microneedle-array. The inclining angle of the invention is adjustable, thus not only being capable of reducing the requirement cost of apparatus but also obtaining the standard three-dimensional micro structure provided with balanced mechanics features of each direction.

The invention discloses a concrete spreading and paving machinery used for building construction. The concrete spreading and paving machinery used for building construction comprises a fixing base, a piston block is connected with the inner side of a through pipe in a clamping mode, a jacking rod is connected to the top of the piston block, a material guiding plate is connected to the top of a clamping base, and mounting holes are formed in the inner side of a mounting rod at equal intervals; a mounting pipe is connected to the left side of the top of the fixing base, a movable rod is connected to the inner side of the mounting pipe in an inserting mode, a movable spring is connected to the top of the movable rod, and through holes are formed in the inner side of the movable rod at equal intervals; and the right side of a threaded rod penetrates through one of the through holes and is connected with a nut in a threaded mode, a second gear track is engaged with the left side of a transmission gear, and a brush plate is connected to the side, far away from a cleaning rod, of a compression spring. The concrete spreading and paving machinery used for building construction has the advantages that uniform discharging can be achieved during discharging of concrete and the concrete paving thickness is convenient to control, and the problem that practicability of the concrete paving machinery is reduced due to the facts that discharging of concrete is nonuniform and the concrete paving thickness is difficult to control is solved.

The invention relates to a pixel control device and a display device applying the pixel control device. And the pixel control device is connected to a subpixel region to supply a first voltage reference, a second voltage reference and a third voltage reference to this subpixel region to make liquid crystal of the display device presented at different angles so as to solve the problems of gray scale inversion and whiteness at large visual angle. And one scan line of the pixel control device is used to control the startup of a first transistor, a second transistor and a third transistor, and a first data line and a second data line of the pixel control device are respectively used to supply a first data voltage reference and a second data voltage reference to determine the first, second and third voltage references.

The invention discloses a belt elevator which comprises a flat conveying belt. A first protecting shell is installed on the outer side of the flat conveying belt. A first hydraulic device is installed on the bottom of the first protecting shell. A transmission shaft is installed on one side of an ascending belt. The transmission shaft and a motor are in transmission connection through a transmission belt. The motor is installed on a bottom plate. A fixing plate is installed at one end of an elevating rope. The other end of the elevating rope is installed on a rolling shaft. A rocking rod is installed at one end of the rolling shaft. Universal self-locking wheels are installed at the bottom of the bottom plate. According to the belt elevator, hydraulic devices are installed at the bottom of the first protecting shell and the bottom of a second protecting shell correspondingly, and therefore the overall height of the elevator can be controlled through the hydraulic devices. The second protecting shell and the first protecting shell are in rotating connection through hinges, the inclination angle of the ascending belt can be controlled by means of a third hydraulic device, and thus flexible strain energy of the elevator is increased greatly.

In order to achieve improved turning performance and stable traveling state even when disturbance in the direction of inclination is applied, a vehicle comprises a vehicle body provided with a steering part and a drive part which are coupled to each other, a steering wheel which is a wheel rotatably attached to the steering part and steers the vehicle body, a drive wheel which is a wheel rotatably attached to the drive part and drives the vehicle body, an inclination actuator device which inclines the steering part or the drive part in a turning direction, a lateral acceleration sensor which detects lateral acceleration that acts on the vehicle body, and a control device which controls the inclination actuator device to control the inclination of the vehicle body, wherein when disturbance in the inclination direction of the vehicle body is applied, the control device controls the inclination of the vehicle body by extracting the amount of change caused by the disturbance from the change of the inclination angle of the vehicle body and adding a control value corresponding to the extracted amount of change caused by the disturbance.

The invention relates to the field of projector installation equipment, in particular to a novel projector hanging seat which comprises a hanging bracket. A hanging plate is connected with the lower end of the hanging bracket and a penetrating hole is formed in the hanging plate. A rotating seat is arranged on the face, which backs to the hanging bracket, of the hanging plate, and a rotating shaftis arranged on the face, towards the hanging bracket, of the hanging seat. The rotating shaft extends into the penetrating hole of the hanging plate. Ball screws are connected under the rotating seat, and ball nuts are matched with the ball screws. The ball nuts are arranged on the hanging bracket and two vertically arranged fixing plates are connected with the lower end of the hanging bracket. Positioning holes are formed in the fixing plates and a turnover plate is arranged between the fixing plates. Rotating shafts are arranged at the two ends, towards the fixing plates, of the turnover plate, and the rotating shafts, at the two ends of the turnover plate, are inserted into the positioning holes of the fixing plates. According to the novel projector hanging seat, projecting angle and height of a projector can be adjusted automatically, the projector does not need to be reinstalled after a projection screen is moved. The novel projector hanging seat is convenient to use and high inpracticality.

The invention provides a fixed clamping extension type automobile part machining machine tool, and relates to the field of automobile part machining. The fixed clamping extension type automobile partmachining machine tool comprises a bottom plate, a groove is formed in the center of the upper surface of the bottom plate, a main shaft gear is rotatably connected into the groove, a fixed sleeve isfixedly connected to the upper surface of the main shaft gear, a center shaft is slidably connected into the fixed sleeve, a rotating plate is fixedly mounted at the top end of the center shaft, telescopic sleeves are fixedly mounted on the upper surfaces, located on the two sides of the fixed sleeve, of the bottom plate, and rotating rings are fixedly mounted at the top ends of the telescopic sleeves. According to the fixed clamping extension type automobile part machining machine tool, the position of a magnetic plate can be controlled by controlling the electrifying amount of each electromagnetic coil, then inclination at different angles can be achieved through up-down position movement of the magnetic plate, and meanwhile, the transverse displacement amount can be sealed through stretching and retracting of gear shaping, and therefore, an inclined working surface can be machined.

The invention discloses a metal plate machining feeding device convenient and fast to use. The metal plate machining feeding device comprises a feeding box main body. A hopper is fixedly mounted on the outer surface of the upper end of the feeding box body. A discharging opening is formed in the outer surface of one side of the hopper. A conveying belt is movably mounted inside the hopper. Metal plates are movably mounted on the outer surface of the upper end of the conveying belt. Wire pulling posts and a second magnet is fixedly mounted on the outer surface of the one side of the conveying belt. A winding shaft and a first magnet are fixedly mounted on the inner surface of the upper end of the hopper. A wire winding post is movably mounted on the outer surface of the middle of the winingshaft. Hanging grooves are formed inside the discharging opening. A clamping post is movably mounted inside each hanging groove. A hanging rod is movably mounted on the outer surface of the middle ofeach clamping post. By means of the metal plate machining feeding device convenient and fast to use, operators can be reminded of conducting feeding in time, and labor intensity of the operators canbe lowered; equipment suitability can be improved; and metal plate materials can be picked for use conveniently.

The invention relates to an experimental operation platform based on multiple degrees of freedom. The experimental operation platform comprises a support platform; an adjusting device is arranged on the support platform; an experimental platform is arranged on the adjusting device; the experimental platform comprises a loading platform arranged on a rotating plate through a pin shaft; and a reaction mechanism, a conveying mechanism and a collecting mechanism are successively arranged on the loading platform from back to front. The invention can solve the following problems of the existing experimental operation platform in a use process: a) not all the participants are enabled to observe the whole process of an experiment when too many people take part in experiment operation by using theexisting operation platform, and the participants need to observe in batches in order to guarantee that all the participants can master the experimental process, or when the experimental process is repeated for researching the experiment data from different angles, angle inclining needs to be manually controlled, and therefore, the accuracy is low and the precision of experimental data is influenced; and b) all the experimental instruments need to be fixed manually, and therefore the stability is low and the operation of taking experimental instruments is inconvenient.

The invention provides a hub drilling device, which comprises a machine frame, a drilling machine, a drilling machine adjusting mechanism, a working table and a working table adjusting mechanism, wherein the drilling machine adjusting mechanism and the working table adjusting mechanism are mounted inside the machine frame; the drilling machine is mounted on the drilling machine adjusting mechanism, the drilling machine adjusting mechanism can drive the drilling machine to move in the vertical direction and the horizontal direction, and the drilling machine is used for feeding in the vertical direction; the working table is mounted on the working table adjusting mechanism, and provided with a clamp capable of mounting and clamping a hub; the working table adjusting mechanism comprises an angle adjusting mechanism and a horizontal displacement adjusting mechanism, the horizontal displacement adjusting mechanism can drive the working table to move linearly in the horizontal direction, and the angle adjusting mechanism can adjust the included angle between the working table and the horizontal plane; and the drilling machine can be used for drilling a valve hole in the hub mounted and clamped on the clamp. The hub drilling device can precisely control the inclined angle of the working table, can drill an inclined valve hole in the hub conveniently, improves machining precision and efficiency, and reduces labor intensity and defective rate.

The invention discloses a fixture device for changing a laser processing angle. The fixture device for changing the laser processing angle comprises a support table, a tilting mechanism for bearing workpieces and driving the workpieces to tilt, and a rotating mechanism for driving the tilting mechanism to rotate. The tilting mechanism is fixedly connected onto the rotating mechanism; and the rotating mechanism is rotatably arranged on the support table. The fixture device for changing the laser processing angle provided by the invention is simple in structure; through the mutual matching of the tilting mechanism and the rotating mechanism, the titling and rotating angles of the workpieces can be accurately controlled, so that multi-angle laser processing can be accurately carried out on the surfaces of the workpieces; and the device provided by the invention makes up for the defect that a laser marker with a laser processing head incapable of being deflected cannot accurately process the workpieces at multiple angles, and is suitable for the laser marker with the laser processing head incapable of being deflected.

The invention relates to a dumping device. The dumping device comprises a total base, a top frame is fixedly arranged on the total base, and a wane is connected to the top frame in a hinged mode; a storing box body is arranged at the upper end of the wine, a rising pushing block is matched with the lower end of the wine in an abutting mode, and a guide rail frame is welded to the total base; right triangle calipers are evenly distributed on the rear end face of the rising pushing block, a base table is arranged behind the rising pushing block, and a storing groove frame is arranged on the base table; openings are formed in the front end and the rear end of the left side of the groove frame correspondingly, a push pressing air cylinder is arranged on the opening closed to the rear side, and a squeezing spring is arranged on the right side in the groove frame; and supporting blocks are squeezingly matched with the left end of the squeezing spring in an abutting mode, the lengths of the bottom of the supporting blocks are larger than the lengths of the right-angle sides of the right triangle calipers, and the oblique planes of the supporting blocks are matched with the oblique planes of the right triangle calipers. According to the dumping device, the supporting blocks and the right triangle calipers are pushed to conduct oblique plane matching on the basis of continuous conveying of the supporting blocks through elastic force of the spring, and the effect that the oblique angle of the automatic controlling storing box body is stably and automatically controlled to dump and contain oil paint is achieved.

The invention discloses a remote control reclining chair with a liquid crystal display. The remote control reclining chair is characterized by comprising a base, a moving rod, a support frame, a gear transmission device, a bottom chair surface, a top chair surface, a cover surface, armrests and a remote control system, wherein one cross section of the base is a circular arc; a clamp groove and a plurality of grooves are formed in the cross section of the base; the grooves are mutually parallel; the moving rod is movably connected with the base; the movable support rod is arranged on the moving rod; the support frame is in a hawk claw shape, and is connected with the bottom chair surface and the base; the gear transmission device comprises a plurality of lower gears, two upper gears and an electric motor; the cover surface is arranged in the top chair surface, and is the liquid crystal display; a handle is arranged at one side of the cover surface; one cross section of the handle is in a T shape; a spring and a magnet are arranged in the handle; and the remote control system comprises an infrared remote controller and a control plate block. The reclining chair is controlled by the remote controller, so that great convenience and high simplicity are realized.

The invention provides a rotor wing tilting mechanism. The rotor wing tilting mechanism comprises a wing assembly, a power assembly and a tilting assembly. The wing assembly comprises a wing main body and a rotor wing tilting shaft, and the rotor wing tilting shaft is rotatably arranged on the wing main body; the power assembly comprises a rotor motor and a motor fixing base, the rotor motor is arranged on the motor fixing base, and the motor fixing base is connected to the rotor tilting shaft; the tilting assembly comprises a driving part, a sliding part and a connecting part, the driving part is fixed to the wing body, the driving part is in transmission connection with the sliding part to drive the sliding part to slide, and the connecting part is movably connected between the sliding part and the motor fixing base so as to drive the power assembly to rotate through the sliding part; and the sliding part, the connecting part and the motor fixing base form a slider-crank mechanism. According to the rotor wing tilting mechanism provided by the invention, the sliding part, the connecting part and the motor fixing base form the slider-crank mechanism so that the tilting angle of the rotor wing can be stably controlled. The invention further provides a tilting rotor wing hovercar and a flying device.

The invention provides a motor rotor, which includes a rotor iron core and a permanent magnet. The permanent magnet is adhered to the surface of the rotor iron core. The rotor iron core is formed by lamination of rotor punching sheets. The side, adhered to the permanent magnet, of the rotor iron core is a regular polygon side, and the number of edges of the regular polygon equals the designed number 2P of magnetic poles of a motor. The center of the rotor iron core is equipped with a circular hole, and the circular hole matches a motor shaft. Positioning holes are evenly distributed in the circumference of the rotor iron core, and the number of the positioning holes also equals the designed number 2P of magnetic poles of a motor. The motor rotor is simple in process, and the labor cost is saved. In addition, the inclination angle precision is easy to control, and the use performance of a motor is guaranteed.

The invention discloses a multilayered domestic vegetable planting bracket, and belongs to the technical field of vegetable planting brackets. The multilayered domestic vegetable planting bracket comprises a base, wherein the top of the base is fixedly connected with two groups of supporting rods which are symmetric to each other; the supporting rods are slidably connected with support plates; a side wall of each support plate is fixedly connected with a connecting plate; the end, which is away from the support plate, of each connecting plate is fixedly connected with a long frame; the supporting rods are slidably connected to the insides of the long frames; a placement hole is formed in the outer wall of each support plate; a first recess is formed in the outer wall of each support plate;a through hole is formed in the bottom of the first recess; the bottom of each support plate is fixedly connected with a second water outlet tube; and the base is connected with rollers. The multilayered domestic vegetable planting bracket is convenient to operate, the number and inclined angle of the required support plates can be adjusted randomly, the occupied area is saved, the yield is improved, sufficient illumination is ensured, and malnutrition of vegetables due to insufficiency of sunlight can be avoided.

The invention relates to switchable comprehensive mechanical load test equipment, and relates to the photovoltaic field. The equipment comprises a profile outer frame, a dynamic and static load unit, a snow load unit and an assembly mounting unit which are all located in a containing space formed by the profile outer frame, the dynamic and static load unit and the snow load unit are both connected with the upper portion of the profile outer frame, and the assembly mounting unit is movably arranged below the dynamic and static load unit and the snow load unit. The photovoltaic module is movably mounted on the module mounting unit; each of the dynamic and static load unit and the snow load unit comprises multiple groups of test assemblies; the snow load unit further comprises a lifting mechanism, and the lifting mechanism is used for driving one end, close to the snow load unit, of the assembly mounting unit to do lifting motion and driving the test assembly of the snow load unit to synchronously lift; a laser range finder is further installed below the assembly installation unit. According to the comprehensive load test equipment for the photovoltaic module, the pressure mode can be adjusted, the pressure intensity can be automatically controlled and collected, and the static load, the dynamic load and the non-uniform load are integrated.

The invention discloses a multi-cutter farmland plough. The plough comprises a frame, first cutter assemblies are hinged at both ends of the lower side of the frame, and a second cutter assembly is hinged to the middle of the lower side of the frame; a DSP controller is fixed to the middle of the upper side of the frame through a bolt; the DSP controller is used for controlling the tilt angles ofthe first cutter assemblies and the second cutter assembly; a first target pressure value is set by the DSP controller, a first target angle is set to a first motor driver, and a second target angle is set to a fourth motor driver; the multi-cutter farmland plough starts plowing, a first pressure sensor collects a pressure value and sends the pressure value to the DSP controller for comparison, and the DSP controller sends an adjustment command to the first motor driver, the fourth motor driver, the third motor driver and the second motor driver according to the comparison result; the first motor driver, the fourth motor driver, the third motor driver and the second motor driver respectively drive corresponding components to adjust to meet the plowing needs.

The invention relates to the technical field of printing equipment, in particular to a printer. The printer comprises a rack, the rack comprises a base and a vertical moving mechanism, the vertical moving mechanism is provided with a first transverse moving mechanism, the first transverse moving mechanism is provided with a second transverse moving mechanism, and the second transverse moving mechanism comprises two rope rollers, a fixing shelf, a printing rod and a first motor used for driving the two rope rollers to rotate; first pull ropes wind the two rope rollers, the winding directions ofthe two first pull ropes on the rope rollers are opposite respectively, the middle of the printing rod is spherically hinged to the fixing shelf, a printing head is arranged at one end of the printing rod, and the ends, away from the rope rollers, of the two first pull ropes are both fixed to the end, away from the printing head, of the printing rod. According to the printer, inclination of the printing head is achieved, and the side face of the product can be printed.

The invention provides Chinese herbal medicine cleaning equipment. The Chinese herbal medicine cleaning equipment comprises a cleaning bucket provided with a cleaning cavity. The Chinese herbal medicine cleaning equipment is characterized in that a driving device is fixedly mounted in the cleaning cavity and provided with a suspension device; the suspension device is fixedly connected to the driving device through an adjustment device; the upper end of the adjustment device is provided with a top plate device; the top plate device is movably connected with a spray device; the spray device is fixedly mounted in a mounting bin arranged on the inner wall of the cleaning bucket; the lower end of the cleaning cavity is further provided with a water outlet groove; and a water outlet pipe is arranged at one side of the water outlet groove and provide with a plugging block. According to the Chinese herbal medicine cleaning equipment, the suspension device is driven by the driving device to rotate; and in the rotating process, the suspension device drives the top plate device to extrude the spray device, water flow is driven to move, so that the medicinal material cleaning effect is better.

The invention relates to the technical field of plastic production, in particular to an automobile windshield production transfer device which comprises a bottom plate, idler wheels are fixedly connected to the four corners of the bottom face of the bottom plate, a fixing base is fixedly connected to the upper surface of the bottom plate, and a hydraulic telescopic rod is fixedly connected to thefixing base. First strip-shaped grooves are formed in the bottom plate in a bilateral symmetry mode, first sliding grooves are formed in the positions, located below the first strip-shaped grooves, inthe bottom plate, an extension plate is arranged on the bottom plate, and the other end of the hydraulic telescopic rod is fixedly connected to the extension plate. The hydraulic telescopic rod is controlled to stretch out firstly during stacking, and then the extension plate is pushed to slide rightwards on the bottom plate. During sliding, the right side containing plate rotates on the first rotating base, the two containing plates are fixed through the connecting rods, and thus the left side containing plate is driven to slide downwards on the side rods, the height difference between the two side containing plates is reduced, windshields can be contained conveniently, more windshields can be contained through stacking, and the transferring efficiency is high.

The invention relates to a vibrating compaction table which is particularly suitable for vibrating compaction of dry sand, and belongs to the technical field of vibrating compaction table structures.The vibrating compaction table comprises a base and a middle frame arranged above the base, wherein a plurality of air springs capable of enabling the middle frame to ascend or descend are arranged between the base and the middle frame, and a plurality of electric magnetic discs which are separated at intervals and a plurality of cushion blocks with damping and supporting functions are installed on the upper surface of the middle frame; and a magnetized disc is correspondingly arranged above each electric magnetic disc, the magnetized discs are installed on the lower surface of an upper vibrating table frame, and a vibration motor and a clamping mechanism used for clamping a sand box are installed on the two opposite side walls of the upper vibration table frame. According to the vibratingcompaction table, the flowing direction of the dry sand can be automatically controlled according to actual needs, the vibration effect is good, the dry sand can meet the actually required compactness, the working efficiency is high, and energy saving and consumption reducing are achieved.

The invention provides a clothing collecting device of a placket machine and the placket machine. The clothing collecting device comprises a rack of the placket machine and a platform supported on the rack for putting clothing. The clothing collecting device further comprises a clothing clamping assembly arranged on one side of the platform and used for collecting the clothing, wherein the clothing clamping assembly comprises a clamping jaw, a first cylinder connected with the clamping jaw, a first support rod for supporting the first cylinder and a second cylinder, the movable end of the second cylinder is connected with the first support rod, the fixed end of the second cylinder is connected with a second support rod in an adjustable way, the first support rod is hinged to the rack, and the second support rod is fixedly connected with the rack; an inwards shrinking feeding opening is formed in the top of the rack and aligned with the clothing clamping assembly, and the clamping jaw extends into the feeding opening. As the clamping jaw in the clothing clamping assembly extends into the feeding opening formed in the rack, small-sized children clothing on the platform can be clamped.

The invention relates to a negative electrode panel for an alkaline dry battery and an application of the negative electrode panel. The negative electrode panel comprises a horizontal part, wherein one end of the horizontal part downwards extends and is connected with a shoulder part used for supporting; the shoulder part comprises a connecting part and a working part, one end of the connecting part is connected with the horizontal part, and the working part is connected with the other end of the connecting part to form a V-shaped included angle. The negative electrode panel is used for assembling a current collector of the alkaline dry battery; the current collector comprises the negative electrode panel, a copper needle, an auxiliary iron block and a sealing plate; the negative electrode panel is fixedly connected to the copper needle, the sealing plate is mounted on the copper needle and arranged outside the negative electrode panel in a covering manner, and the auxiliary iron block is inserted between the sealing plate and the negative electrode panel. The V-shaped included angle is formed through the connecting part and the working part of the shoulder part, so that the working part and the sealing plate are in point contact with a plane; besides, the working part further has a certain support action on the sealing plate, matching of the sealing plate and a positive electrode casing is enhanced, and the leakage prevention performance is improved.

The invention discloses a mobile phone holder for video watching on a tabletop. The mobile phone holder comprises a cross plate and a fixing plate, wherein one end of the cross plate is connected withan overturning plate through a rotating shaft; clamp blocks are respectively and fixedly connected with the two ends of the side of the overturning plate close to the cross plate; an anti-slip stripis fixedly connected to the side of the upper surface of the cross plate close to the overturning plate; the fixing plate is fixedly connected to the lower surface of the other end of the cross plate;a threaded groove is formed on one side of the bottom of the fixing plate; and a threaded rod is in threaded connection with the inside of the threaded groove. During use, the threaded rod is rotatedto convert a rotation force into a direct push force through a rotation connector, so that a clamp plate is pushed; the tabletop is fixed between the clamp plate and the cross plate, so that the cross plate can be fixed on the tabletop; a mobile phone is then placed between the two clamp blocks on one side of the overturning plate, and can be prevented from slipping through blocking of the anti-slip strip; and the rotating shaft is then rotated to easily control an inclination angle of the mobile phone.

The invention discloses a portable adjustable maintaining vehicle under an automobile. The portable adjustable maintaining vehicle comprises a bottom plate. A turntable is fixedly connected to the upper end of the bottom plate. A traveling device is arranged on the lower side of the bottom plate. Thrust ball bearings are fixedly connected to the upper end of the turntable. A bearing plate is arranged above the turntable. A first groove is formed in the lower side of the bearing plate. The inner wall of the upper side of the first groove is fixedly connected with the thrust ball bearings. A service creeper is rotationally connected to the upper side of the bearing plate. A sliding chute is formed in the upper side of the bearing plate. A sliding block is connected into the sliding chute ina sliding manner. A first rotating shaft is arranged in the side wall of the sliding chute in a penetrating manner. A threaded rod is fixedly connected to one end of the first rotating shaft. A threaded hole is formed in the sliding block. The threaded rod penetrates through the threaded hole. The portable adjustable maintaining vehicle can rotate in the horizontal direction, can also be adjustedin an inclined manner, facilitates multiple operations under the automobile, and is smaller in size by shortening a vehicle body and stacking the bearing plate, thereby meeting the use requirement ofpeople.