43results about How to "With braking function" patented technology

The invention discloses an office chair with a rotatable chair plate, which consists of the chair plate, a backboard and a leg stand, wherein the bottom of the chair plate is provided with a base plate; an atmospheric pressure rod is arranged between the base plate and the leg stand; a chair height adjustment rod is arranged on one side of the base plate through a rotating shaft; the other end of the chair height adjustment rod is in compression contact with a telescopic link; the base plate is provided with a pitching adjustment device consisting of a threaded rod arranged on the other side of the base plate; the threaded rod is matched with the base plate through screw thread; the front end of the threaded rod is in contact with the lower side of the chair plate; and the base plate is provided with a pitching adjustment lock of which the other end runs through the rear end of the threaded rod perpendicularly to the axis of the threaded rod. In the office chair, one end of the chair height adjustment rod is connected with the base plate through the rotating shaft, so a person at work can conveniently rotate the office chair leftwards and rightwards and does not need to move the chair when arising.

The invention discloses an electromagnetic braking translation-type rolling plate clamp comprising a hoisting device, a driving device, a braking device, a supporting cross beam, a left clamp arm, a right clamp arm, a clamp arm protection device and an electrical system, wherein the driving device comprises a three-in-one speed reducer, a torque limiter, a small spiral bevel gear, a big spiral bevel gear, a rack, a gear, an aligning roller bearing and a gear shaft; and the electromagnetic braking device comprises an electromagnet, a ratchet wheel and a pawl. When in brake, the other end of the pawl is supported on the root of the ratchet wheel; the middle of the pawl is hinged on the rear side wall of the supporting cross beam; a detection device comprises a position switch arranged on the cross beam and a centering switch and an edge detection switch which are arranged on the clamp arms. In the invention, the driving device has stable running; the electromagnetic braking is accurate and reliable; and a sliding plate is well protected and can be easily and accurately reset. The clamp has the advantages of compact structure, light dead weight, high safety factor, high strength, comprehensive protection measure and high working efficiency, can realize automatic and semi-automatic running and relieve the labor intensity of workers.

The invention discloses a multifunctional pediatric bed. The pediatric bed comprises two support frames, a rocker box is fixedly arranged between the opposite sides of the two supporting frames in a connection mode, annular sliding rails are fixedly connected to the opposite sides of the two supporting frames, the surface of each annular sliding rail is slidably connected to a sliding supporting rod, one end of each sliding supporting rod is fixedly connected to a shaking table supporting plate, a first fixing rod and a second fixing rod are fixedly connected to one side of each shaking tablesupporting plate in sequence from top to bottom, an air pipe box is fixedly arranged between the opposite sides of the two shaking table supporting plates in a connection mode, a heating box is fixedly connected to the bottom of the air pipe box, a fixing frame is fixedly connected to the bottom of the inner wall of the rocker box, and a fixing shaft penetrates through the surface of the fixing frame. The invention relates to the technical field of pediatrics. The multifunctional pediatric bed has an automatic shaking function, is very convenient to use, saves a large amount of time, and reduces the working intensity of medical staff.

The invention discloses a leg explosive force auxiliary training appliance, which comprises a base, wherein the base comprises a base body; a plurality of cover plate assembly installing holes are symmetrically formed in the side walls of two sides of the base body; a cover plate is arranged on the side wall of the upper side of the base body; the cover plate comprises a cover plate body; base connecting plates are symmetrically arranged at the side walls of two sides of the cover plate body; the cover plate assembly installing holes are fastened and connected with a base connecting plate through screw bolts; a force transmission belt opening is formed in the side wall of the upper side of the cover plate body; two mutually parallel side plates are symmetrically arranged on the side wallsof the two sides of the cover plate body; and a first avoiding hole and a second avoiding hole are formed in the side walls of the each of the two side plates. The leg explosive force auxiliary training appliance provided by the invention has the advantages that a sportsman can realize the reinforcement on the leg core power in a short time; in addition, the braking on the force transmission beltcan be realized; and the safety of the device and the training efficiency are improved.

The invention discloses a small lever type energy-saving ship lift and an operation method thereof. The small lever type energy-saving ship lift is applicable to ship navigation of small water retaining structures. The ship lift comprises an upstream approach channel, an upper lock head, a ship chamber section, a lower lock head and a downstream approach channel which are sequentially intercommunicated with one another from upstream to downstream. The ship lift is characterized in that the ship chamber section comprises a lever, a transmission shaft and two cylindrical type ship bearing chambers, wherein the transmission shaft is of a driving braking structure, and two ends of the transmission shaft are connected to a dam body or a firm foundation rock; the transmission shaft is rigidly connected to the middle part of the lever; the two cylindrical ship bearing chambers are correspondingly connected to two ends of the lever. The ship lift is applicable to one-way navigation or two-waynavigation of a ship, so that the ship navigation efficiency is improved; moreover, the gravitational potential energy of ships at the upstream and the downstream can be converted with each other based on the lever principle, so that the transferring energy consumption is greatly reduced.

The invention discloses a single-phase miniature electric travelling crane, comprising a driving wheel, a driven wheel and a motor speed reducer. The driving wheel and the driven wheel are respectively arranged on a mounting board of the driving wheel and a mounting board of the driven wheel; the driving wheel is in transmission connection with the motor speed reducer; the motor speed reducer is fixed on the mounting board of the driving wheel; the driving wheel and the driven wheel are respectively in rolling fit with the left and right sides of the upper edge surface of a guide rail; a connecting piece is arranged between two mounting boards; the electric travelling crane is provided with a balance wheel; the balance wheel is in rolling fit with the lower edge surface of the side of the guide rail where the driven wheel is positioned; a supporting shaft of the balance wheel is fixed on the mounting board of the driven wheel; and a single-phase capacitance-operating bypassed magnetic braking type asynchronous motor is selected as the motor of the electric travelling crane, and has braking function. As the lower edge surface of the side of the guide rail where the driven wheel is positioned is provided with the balance wheel, after the guide rail applies a downward acting force to the balance wheel, the acting force acts on the mounting board of the driven wheel, and is just balanced with the dead weight of the motor speed reducer on the mounting board of the driving wheel, thus a balancing iron block does not need to be arranged on one side of the mounting board of the driven wheel in order to balance the dead weight of the motor speed reducer. As the single-phase capacitance-operating bypassed magnetic braking type asynchronous motor is selected and has the braking function, the electric travelling crane is steady, safe and reliable in operation.

The invention discloses an inclined shaft common rail clamping rail man car. The inclined shaft common rail clamping rail man car comprises a head car and a tail car, each of the head car and the tailcar comprises a front steering device, a rear steering device and caliper type hydraulic brakes, the steering support frames of the front steering device and the rear steering device are provided with walking wheel supports with frame structures, brake seats fixed on the left side and the right side of the walking wheel supports correspondingly and clamping rail supports correspondingly fixed onthe front side and the rear side of the brake seats; the four clamping rail supports are correspondingly connected with a group of clamping rail devices, and steering assemblies are correspondingly fixed on the steering support frames of the front steering device and the rear steering device; and the four caliper type hydraulic brakes are correspondingly fixed in the four brake seats, and the control system controls the braking linkage. According to the inclined shaft common rail clamping rail man car, the front steering device and the rear steering device are modularized, the walking, the multi-direction steering, the caliper type braking and the floating type clamping rail are integrated, the structure is compact, the safety performance is reliable, and convenience is provided for vehicle assembly. The head car and the tail car are both man cars and have the braking function, a man car can be connected between the head car and the tail car, and a special brake car does not need to bespecially arranged.

The invention discloses a rail trailer running part which is mounted below a trailer body and comprises an axle, wherein axle box bodies are arranged at the two ends of the axle; an electromagnetic brake is mounted on the outer side of one axle box body; buffer devices are arranged at the upper ends of the two axle box bodies respectively and comprise plate springs; the lower ends of the plate springs are connected with the upper surfaces of the axle box bodies; one end of each plate spring is articulated with a first mounting seat; the other end of each plate spring is articulated with a transition mounting seat; second mounting seats are articulated above the transition mounting seats; and the first mounting seats and the second mounting seats are connected with the trailer bodies. The rail trailer running part is simple structure, light in weight and convenient to assemble and overhaul. The electromagnetic brake allows the trailer running part to have a braking function; a structureof the trailer running part is simplified; the trailer running part is more applicable to a light-weight design of a light rail trailer; and the production and manufacturing cost is lowered. The buffer devices transmit vertical, traction and braking loads between the trailer body and the running part and mitigate an impact load generated by an uneven pavement.

The invention provides a vertical type direct-drive permanent magnet synchronous motor. The motor comprises a stator and a rotor, wherein the stator comprises a winding stator core and a case which sleeves the winding stator core; the rotor comprises a rotor core and a rotary shaft penetrating through the rotor core; an upper end cover and a lower end cover are arranged at upper and lower ends ofthe case; the rotary shaft sequentially penetrates through the upper end cover and the lower end cover; a brake device is arranged at the upper end of the rotary shaft and has assisted direction determining and braking functions. The brake device with the simple structure is additionally added and has the assisted direction determining and braking functions, the speed regulating range is large, speed regulation is fast, and operation requirements under complicated geological conditions can be met.

The invention relates to the field of brakes for rail transit, in particular to a control mechanism and a brake device. The control mechanism is characterized by comprising a three-way pipeline and a first connector of an air source; the three-way pipeline is in a three-way shape formed by a first pipeline, a second pipeline and a third pipeline, the first pipeline and the second pipeline are respectively connected with one of valve cavities of a pair of control valves, and the control end of any control valve is at least respectively controlled by the same controller; through the control mechanism composed of the controller, the two control valves and the three-way pipeline, on one hand, compressed air can be injected into the braking mechanism, on the other hand, the compressed air in the braking mechanism can be emptied, and the control mechanism has the braking function of the control mechanism in the prior art and also has the anti-skid function in the prior art.

The invention proposes a tape measure capable of changing the tape belt direction, comprising a tape measure housing and a tape measure component arranged in the tape measure housing. The tape measure component comprises a tape measure core, a tape measure belt and a tape measure hook. The outlet of the tape measure housing is provided with a rotation component which can rotate the tape measure belt from a horizontal plane to a vertical plane and actuates the tape measure belt after the rotation. The arrangement of the rotation component means that through the rotation component, the direction of the tape measure belt can be changed, so as to resolve the problem that a flat and round tape measure housing cannot be placed flatly on a working plane when the tape measure belt is drawn out for measuring. It is possible to place the flat and round tape measure housing on the working plane to easily observe the readings on the surface of the tape measure belt. In addition, the rotation component also has an actuating function. When the direction of the tape measure belt changes, the tape measure belt can be locked, making the arrangement of an additional actuating block and a button unnecessary.

The invention relates to the field of rail transit, and particularly discloses a wet-type braking system of an urban rail vehicle. The wet-type braking system comprises a rail main body and a brake fixed to the bottom of a rail vehicle, wherein the brake comprises an outer shell and a brake assembly, a groove is formed in the rail main body, a bearing groove is formed in the outer shell, a rollingbearing is fixedly connected in the bearing groove, the outer shell is rotationally connected with a rolling wheel, the rolling wheel is fixedly connected with a connecting shaft, the top of the connecting shaft is fixedly connected with a supporting shaft, a spline shaft is fixedly connected to the top of the supporting shaft, the rolling wheel is in transmission connection with a friction cylinder, a spline hole is formed in the friction cylinder, the friction cylinder is fixedly connected with a friction disc, the brake assembly comprises a connecting frame and a friction semicircular cylinder, the connecting frame is fixedly connected with a semicircular ring, the semicircular ring is provided with an annular groove, the friction semicircular cylinder is fixedly connected with an annular boss, and the friction semicircular cylinder is fixedly connected with a friction semicircular sheet. The wet-type braking system of the urban rail vehicle has a function of braking the rail vehicle running on the rail main body through friction force.

The invention provides a manual and automatic integrated spinup device and a microgravity roll state simulation system and relates to the technical field of on-orbit service and maintenance. The manual and automatic integrated spinup device is suitable for enabling a suspension target to spin around a spinning axis. The manual and automatic integrated spinup device comprises a manual spinup component and/or a spinup motor, a spinup rotating part and a friction piece, wherein the manual spinup component and/or the spinup motor is used for providing a spinup driving force; the spinup rotating part is suitable for converting a torque into rotating motion around the axis under the driving of a spinup driving force; the friction piece is indirectly or directly connected with the spinup rotatingpart; and the friction piece is suitable for fitting a driven part and driving the driven part to coaxially rotate with the friction piece. The manual and automatic integrated spinup device simultaneously has a manual driving mode and a motor driving mode, a clutch is configured, the two driving modes do not interfere with each other, and after being assembled at one time, the manual and automatic integrated spinup device can be switched between manual driving and motor driving at wills without repeatedly changing hardware and without being repeatedly debugged.