37results about How to "Reduce rotational frictional resistance" patented technology

The invention relates to the field of automobile braking devices, and aims at providing a parking braking transmission device. The parking braking transmission device comprises a shell provided with an installation through hole and an installation cavity, a planetary reducer located in the installation through hole and provided with a driven synchronous belt wheel and a floating centring shaft, a motor located in the installation cavity and provided with a location convex ring at a front end cover, a lower connection block provided with a location hole which is formed outside the location convex ring in a sleeving manner, and a clamping hole and a buffering hole which are located in the two opposite sides of the location hole respectively, an upper connection block provided with a clamping block which is inserted in the clamping hole, an insertion sheet with a side surrounding which coats a buffering gasket and is inserted in the buffering hole, and a radial limit hole which is in clearance fit with the front end of the floating centring shaft, a shell cover connected with the shell body, an elastic vibration damping block connected with the front end of the lower connection block and the shell cover respectively, a drive synchronous belt wheel which is in transmission connection with the motor output shaft, and a synchronous belt. The parking braking transmission device is low in vibration and noise during working, and easy to assemble.

The invention provides a locomotive limit detection device which comprises fixed stand columns on the two sides of a rail, rotary supports rotating around the fixed stand columns are arranged on the fixed stand columns, the rotary supports are oppositely and symmetrically arranged, upper gauge limit blade plates are arranged on the rotary supports, and locomotive upper limit gauges are defined bythe inner side edges of the upper gauge limit blade plates, and a rotating device for driving the rotating supports to rotate around the fixed stand column is also arranged on the fixed stand column.The rotary support is suitable for a railway track, and during work, the rotary support is perpendicular to the running direction of a locomotive to play a role in detection operation; and when the detection device does not work, the rotating device drives the rotating support to rotate around the fixed stand column, so that the rotating support is parallel to the running direction of the locomotive.

A small-sized rotor type electromagnetic regulating valve and method of use thereof, comprising rotor type electromagnetic driving mechanism and butterfly type valve regulating mechanism in coaxial connection, wherein the electromagnetic driving mechanism includes a stator, a rotor arranged in the stator and a rotor return spring, the valve regulating mechanism includes a valve body and a valve plate. The invention realizes simple structure, sensitive opening and closing, high resolution factor, small return difference, accurate valve position and good linearity.

The invention provides a method for forming and manufacturing a cooling structure of a heat exchanger, which includes a pressing auxiliary mechanism, an intermittent indexing mechanism and a displacement mechanism. The displacement mechanism is installed on the left end surface of the intermittent indexing mechanism. The pressure auxiliary mechanism is installed on the displacement mechanism, and the pressure auxiliary mechanism is located directly above the intermittent indexing mechanism; the present invention solves the problem that the existing copper tube is bent into a spiral shape by manually turning and forming on a cylinder, However, this method has high requirements on the staff, and the force is uneven during the rotation process, which easily crushes the copper tube, resulting in deformation of the copper tube. Large-scale production operations, and certain pressure-holding operations cannot be performed on the bent and formed coils, resulting in the occurrence of bending and springback.

The invention discloses a pendulum brake suitable for an emergency barrier. The pendulum brake suitable for the emergency barrier comprises columns and baffles, wherein a rotary shaft and a fixing rodare arranged on the axial end face of each column, and the rotary shafts are driven by motors in the columns to rotate; a limiting plate is circularly arranged on the side wall of the axial bottom end of each rotary shaft in the circumferential direction, and limiting strips are arranged on the limiting plate in a protruding mode; a connecting sleeve is arranged on one side edge of each baffle, the axial bottom end faces of the connecting sleeves are provided with limiting grooves matched in a concave mode, and the limiting grooves are matched with the limiting strips; the rotary shafts are sleeved with the connecting sleeves; and the limiting strips are embedded in the limiting grooves and fixed in a transition fit mode. The pendulum brake suitable for the emergency barrier further comprises cover plates which are detachably connected with the axial tops of the fixing rods and rotationally connected with the axial tops of the rotary shafts. The pendulum brake suitable for the emergency barrier further comprises a base, the two ends of the base in the long axis direction are each provided with a mounting groove, and the axial bottom ends of the columns are embedded in the mountinggrooves in a transition fit mode. According to the pendulum brake suitable for the emergency barrier, the structure is simple, the main components are detachably connected, assembly and disassembly are convenient, and thus workers can conveniently carry the pendulum brake for storage at any time or move the pendulum brake to a place needing traffic limitation and arrange the pendulum brake quickly.

A parking brake device, comprising a transmission mechanism and a brake caliper that is transmission-connected to the transmission mechanism; the transmission mechanism includes a housing provided with an installation through hole and an installation cavity, located in the installation through hole and provided with a driven A planetary reducer with a synchronous pulley and a floating centering shaft, a motor located in the installation cavity and with a positioning bead on the front cover, a positioning hole sleeved outside the positioning bead, and snaps on opposite sides of the positioning hole. The lower connection block of the hole and the buffer hole is equipped with a block inserted into the hole, an insert piece wrapped around the buffer pad and inserted into the buffer hole, and an upper part of the radial limit hole that is matched with the front end of the floating centering shaft. The connecting block, the shell cover connected with the housing, the elastic damping block connected with the front end of the lower connecting block and the shell cover respectively, the active synchronous pulley and the synchronous belt connected with the output shaft of the motor. When the parking brake device works, the vibration and noise are small and the assembly is easy.

The invention provides a high-temperature liquid furnace slag conveying valve device, which manly consists of a casing, an impeller, a shaft and a support seat and is characterized in that a slag outlet and a slag inlet with cooling walls are arranged on the casing, a bearing is arranged between the casing and the shaft, the impeller comprises a hub and blades and is divided into a plurality of hollow cavities by the blades, the impeller is arranged in the casing in a rotation matching way, the blades and the casing form the rotation sealing, a plurality of longitudinal and transverse lubricating oil hole passages and blowing hole passages are formed on the impeller and the casing, the furnace slag can adopt a side-inlet and side-outlet structure, an upper-inlet and lower-outlet structure and an upper inlet and side-outlet structure, and the sealing structure can be designed into a cylindrical surface sealing structure, a conical surface sealing structure and a plane sealing structure. A high-temperature liquid furnace slag conveying method is characterized in that high-temperature materials enter the device from the slag inlet and are output to the slag outlet by the sealing rotation of the blades to be rotatablely output. The high-temperature liquid furnace slag conveying valve device can be arranged at an inlet and an outlet of a high-temperature furnace slag processing device to be used as a feeding machine and a baiting valve, and the rotation sealing conveying of the high-temperature materials can be realized.

The invention relates to a silicon wafer line cutter winding displacement mechanism which comprises a winding displacement roller, a rolling shaft and a roller bracket; the winding displacement roller is internally provided with a cavity; a mounting groove is formed in one side of the cavity; a clamping spring groove is formed in the other side of the cavity; the roller bracket comprises a vertical rack and a horizontal rack; a mounting hole, a first notch and a second notch are formed in the vertical rack; first external threads, second external threads and a convex plate are arranged on the roller; the roller is externally provided with a mounting nut, a bushing and a shaft cap, and is internally provided with a through hole; an air pipe connector is arranged on one side of the through hole; the other side of the through hole communicates with the mounting groove; and a plurality of bearings are arranged between the roller and the cavity of the winding displacement roller, and are internally provided with air guide holes. The silicon wafer line cutter winding displacement mechanism is reasonable in structure and convenient to mount, and the increasing of an equipment utilization rate and the reduction of the maintenance cost and a line broken rate are facilitated.

The invention relates to a sliding window and a working method thereof, which comprises: a sliding mechanism comprising an upper sliding mechanism, and a window hole matching with an inner window is opened on a fixed window under the upper sliding mechanism; the upper sliding mechanism comprises an upper guide rail, an upper guide rail Fixed on the inner side of the fixed window, the upper side of the upper connecting bar slides and fits with the upper guide rail along the length direction of the upper guide rail, the lower side of the upper connecting bar is hinged with the upper side of the upper bracket, and the lower side of the upper bracket and The inner surface of the inner window is fixedly connected; the inner window is suitable for opening and closing the window hole through the relative rotation of the upper connecting bar and the upper bracket, and the inner window is suitable for sliding relative to the upper guide rail through the upper connecting bar; the inner window of the sliding window passes through the upper The connecting bar and the hinge of the upper bracket realize the rotary opening and closing, and the upper connecting bar and the upper guide rail move along the length direction of the upper guide rail and can stay at any position between the extreme positions of the two sides.

The invention relates to an external mechanical manual opening device and a permanent magnet driving mechanism. The opening device comprises a manual opening shaft, a fixing base, a bearing and an elastic rolling spring. The bearing is fixedly arranged in the fixing base. The manual opening shaft is horizontally arranged in the fixing base and is arranged on the bearing in a penetrating mode. The front end and the back end of the manual opening shaft both extend out of the fixing base. An eccentric circular column is arranged at the back end of the manual opening shaft. The elastic rolling spring is arranged in the fixing base. The outer end portion and the inner end portion of the elastic rolling spring are fixedly connected with the fixing base and the manual opening shaft respectively. When the opening device is arranged on the permanent magnet driving mechanism, the end face of the eccentric circular column is in face contact with an opening guiding rod of the permanent magnet driving mechanism, and the periphery side face of the eccentric circular column is in sliding contact connection with an opening head of the opening guiding rod. Accordingly, manual opening and automatic closing of the permanent magnet driving mechanism can be achieved, the number of component parts is small, structure is simple and reasonable, stability and reliability of performance are high, self rotating of the opening guiding rod can be avoided, manual rotating is easy and smooth, performance is stable, and service life is long.

The invention relates to a three-cavity communicated type sample detection cup which comprises a cup cover, an outer cup body, an inner cup body and an arc-shaped plate, wherein the inner cup body andthe arc-shaped plate are arranged inside the outer cup body; the outer cup body is internally divided into a first cavity, a second cavity and a third cavity of different sizes by the inner cup bodyand the arc-shaped plate; a second filtering net is arranged on the arc-shaped plate; a first filtering net is arranged on the wall of the inner cup body; a base and a liquid inlet rod are arranged inthe center of the bottom of the inner cup body; and a rotating rod is arranged between the inner cup body and the arc-shaped plate. The sample detection cup provided by the invention has impurity filtration and isolation functions, and detection results can be relatively real and accurate.

The invention provides a rotary outlet device of a guide device for drilling radial horizontal holes. An outlet of the guide device is provided with a concave outlet groove. The rotary outlet device of the guide device for drilling radial horizontal holes is located in the outlet groove. The rotary outlet device comprises a body and a rotating ring. The body is provided with a through hole communicating with the outlet of the guide device. The bottom end of the through hole is provided with a cover plate. The cover plate is provided with a cover plate hole communicating with the through hole. The top end of the through hole is provided with an annular clamping portion. The rotating ring is arranged in the through hole. The bottom end of the rotating ring abuts against the cover plate. The outer wall of the rotating ring is provided with an annular step in a protruding manner. A first cavity is defined by the upper step face of the annular step and the annular clamping portion. A second cavity is defined by the lower step face of the annular step and the cover plate. The first cavity and the second cavity are each internally provided with multiple steel balls. The rotary outlet device can effectively solve the problem that a sleeve drilling tool is worn eccentrically in the drilling process and thus is stuck.