37 results about "Recirculating ball" patented technology

The present invention relates to a drive device (100) of a brake caliper (200), comprising a recirculating ball screw-nut assembly within a cylinder chamber (140) in a caliper body (145), wherein the recirculating ball screw-nut assembly comprises a threaded shaft (150) and a nut (160) screwed externally onto the threaded shaft (150), with external teeth (165) of the nut screw,wherein the threaded shaft (150) and the nut screw (160) extend in the direction of a drive axis (170) coaxial to the threaded shaft (150), and wherein the threaded shaft (150) extends in a direction of extension from a front end thereof to a rear end thereof to a thrust plate (180),in which an axial retaining ring (110) of the nut screw (160) is interposed between the external teeth (165) and the thrust plate (180) and held in position with the use of at least one fixing screw (120) comprising at least one respective tip (125),in which the axial retaining ring (110) has an inclined surface (111) on which a tapered side (121) of at least one respective tip (125) of at least one fixing screw (120) interferes.

The embodiment of the invention provides a vehicle deviation compensation control method matched with a recirculating ball steering gear and related equipment, and belongs to the technical field of vehicle control. The method comprises the steps that a vehicle state signal is obtained, and the starting state of a deviation compensation function is determined according to the effectiveness of the vehicle state signal; when the deviation compensation function is enabled, responding to the condition that the vehicle state signal meets a first preset working condition, and analyzing and determining a long-term compensation force and a short-term compensation force according to the vehicle state signal; and in response to monitoring that the vehicle state signal meets a second preset working condition under the first preset working condition, maintaining the long-term compensation force and the short-term compensation force, and applying compensation torque according to the long-term compensation force and the short-term compensation force through a power-assisted motor of the recirculating ball steering gear. The embodiment of the invention aims at enabling the vehicle matched with the recirculating ball steering gear to realize intelligent deviation compensation and reducing the driving fatigue of a driver.

A ball screw mechanism (1) has a screw (10) forming an inner helical raceway (24); a nut (12) forming an outer helical raceway (54), at least two balls (14) positioned so as to roll simultaneously on the inner and outer raceways, and also a first end-of-travel stop device (32) for the balls (14) and a second end-of-travel stop device (62) for the balls (14), these end-of-travel stop devices being axially opposite and delimiting with the inner helical raceway (24) and the outer helical raceway (54) a helical volume for housing the balls (14). The second stop device (62) has a second fastening portion (68) that is fixed relative to the nut (12), and the first stop device (32) has a first fastening portion (67) that is fixed relative to the screw (10).

The present application relates to the technical field of steering gear, and discloses a split type recirculating ball type electric power steering gear, which comprises an electric power steering assembly, a steering assembly which is detachably arranged at a driving end of the electric power steering assembly and forms a split type arrangement with the electric power steering assembly, and a positioning assembly which is arranged inside the steering assembly and used for coaxially connecting with the driving end of the electric power steering assembly, wherein the electric power steering assembly comprises a worm shaft which is rotatably arranged at one side of a speed reducer, a connecting disc which is fixedly arranged at an end of the worm shaft, a first coordination hole which is formed in the inner side of the connecting disc, and an input shaft which is rotatably arranged at the side of the speed reducer away from the connecting disc. The split type recirculating ball type electric power steering gear can effectively solve the problem that the connection between the worm shaft and the ball screw is not safe enough in the prior art.

This disclosure provides a system and method for driving multi-mode steering in a vehicle. The system includes a control subsystem, a front-wheel steering subsystem, and a rear-wheel steering subsystem. The control subsystem includes a vehicle controller, an intrinsically safe angle sensor, an intrinsically safe pressure sensor, and an onboard intrinsically safe display screen. The front-wheel steering subsystem includes a steering wheel, an explosion-proof steering motor column assembly, a steering drive shaft, a recirculating ball steering gear, a steering tie rod assembly, a front steering axle assembly, and a front wheel hydraulic circuit branch of a hydraulic pump station. The rear-wheel steering subsystem includes a rear wheel hydraulic circuit branch of a hydraulic pump station, an explosion-proof solenoid valve assembly, and a rear steering axle assembly. The technical solution of this disclosure achieves precise control of multi-mode vehicle steering, adapts to different driving scenarios, improves the flexibility and maneuverability of vehicle steering, and enhances the accuracy and reliability of steering control, ensuring a stable and controllable steering process, thereby improving driving safety and comfort.

The present application relates to a combined guide rail mechanism and its use in a vehicle slide-out system, which includes a guide rail, a first guide, and a second guide. The guide rails contain multiple parallel rows of circulating balls, enabling the combined guide rail mechanism to achieve two-stage telescopic linear motion. A vehicle box slide-out system comprises the combined guide rail mechanism, a driving device, a support frame, a bearing box, and a slide-out box. This application achieves a two-stage extension, increases the usable space of the vehicle, and has an integrated mechanism setup that does not require disassembly of the vehicle's chassis. It is easy to install, needing only the slide-out box to be placed at the vehicle's opening, which is neat and aesthetically pleasing.

A recirculating ball steering gear for a steering system of a vehicle, in particular a utility vehicle, includes at least one housing, at least one steering spindle, at least one steering spindle nut which is guided in an axially displaceable manner inside the housing and which in the assembled state is connected to the steering spindle via a plurality of balls, and at least one bearing device, by which the steering spindle is supported in the housing. The bearing device, the steering spindle and the housing form an adjusted bearing arrangement.

The invention relates to an actuation device of a brake caliper, comprising a recirculating ball screw-nut assembly within a cylinder chamber in the caliper body, wherein the recirculating ball screw-nut assembly comprises a threaded shaft and a nut externally threaded onto the threaded shaft, the nut having an outer toothing of a nut screw, wherein the threaded shaft and the nut screw extend in the direction of a drive axis coaxial to the threaded shaft, and wherein the threaded shaft extends in the direction extending from a front end portion to a rear end portion thereof up to a thrust plate, wherein an axial retaining ring of the nut screw is placed between the outer toothing and the thrust plate and is held in place by using at least one fixing screw comprising at least one respective tip end portion, wherein the axial retaining ring has an inclined surface on which a tapered side portion of the at least one respective tip end portion of the at least one fixing screw interferingly engages.

The embodiment of the invention provides a delay assistance control method matched with a recirculating ball steering gear vehicle and related equipment, and belongs to the technical field of vehicle control. The method comprises the following steps: acquiring an IGN ignition signal, an engine signal, a vehicle speed signal and a historical assistance state of a previous period; determining a first input state according to the IGN ignition signal, determining a second input state according to the engine signal, and determining a third input state according to the vehicle speed signal; determining the power assisting state of the current period according to the first input state, the second input state, the third input state and the historical power assisting state, wherein the power assisting state comprises closing and activating; and in response to the fact that the power assisting state is activated, power assisting torque is determined according to the vehicle speed signal, and the power assisting torque is applied through a power assisting motor of a recirculating ball steering gear of the vehicle. The embodiment of the invention aims to improve the driving safety of the recirculating ball steering gear vehicle during accidental flameout.

This invention relates to the field of frame equipment technology, and in particular to a recirculating ball type electric power steering system, comprising a steering power shaft; a steering assembly, mounted on the output end of the steering power shaft, which transmits signals through a Hella sensor after the steering power shaft rotates; a transmission mechanism, mounted on one end of the steering assembly, which provides power to the worm gear after receiving the transmitted signal; and a lubrication mechanism, mounted on one end of the transmission mechanism, which lubricates the threaded rod of the recirculating ball type mechanical steering system and simultaneously limits the movement of the threaded rod. It features light and flexible steering, active self-centering, autonomous driving, and assisted driving. Employing a Hella torque sensor capable of simultaneously outputting torque and angle signals, it offers more sensitive sensing, enabling not only active self-centering, autonomous driving, and assisted driving while ensuring power assist, but also light and flexible steering with a smooth and continuous feel.

A steering mechanism, comprising a circulating ball steering gear, a driving rocker arm, a driven rocker arm, a driven rocker arm shaft and a steering tie rod, wherein the circulating ball steering gear is connected to a first end of the driving rocker arm; the driven rocker arm shaft is connected to a first end of the driven rocker arm; a second end of the driving rocker arm and a second end of the driven rocker arm are connected to the steering tie rod; and two ends of the steering tie rod are connected to tires.

The utility model relates to a clamp, in particular to a clamp for a middle shell of an electric recirculating ball steering gear. The clamp is composed of a base, positioning plates and positioning assemblies, the positioning plates are fixedly installed at the two ends of the base respectively, the multiple positioning assemblies are arranged on the positioning plates, and each positioning assembly is composed of a fastening bolt, a pressing plate and a supporting block. According to the clamp, the positioning assembly can be loosened by loosening the fastening bolt, and after the positioning assembly is loosened, the middle shell can be conveniently disassembled and assembled on the positioning plate; in the process, the fastening bolt does not need to be completely loosened, so that disassembly and assembly are convenient, the disassembly and assembly efficiency can be effectively improved, and the labor intensity is reduced. The positioning assembly is matched with the positioning plate so that the middle shell can be firmly and accurately fixed, it is guaranteed that the middle shell is not prone to moving in the machining process, the machining precision of the middle shell can be effectively guaranteed, and it is guaranteed that the machined middle shell is qualified. The problems that an existing clamping mode is inconvenient to clamp, low in clamping efficiency and high in labor intensity are solved.

The invention discloses a circulating ball type electric power steering gear control method and system, and relates to the technical field of automobile steering control, and the method comprises the steps: constructing and storing a power mapping model, a safety threshold model and a signal transfer function model; each influence parameter numerical value is obtained in real time, and whether each influence parameter numerical value meets the numerical value range limitation of a safety threshold model is judged; if the limitation is met, a single control mode is executed; a first control loop confirms a target power-assisted current value based on a power-assisted mapping model and in combination with each influence parameter numerical value and then outputs the target power-assisted current value; the second control loop analyzes and obtains the corresponding control deviation rate of each control node in the first control loop under each influence parameter numerical value condition; the first control loop and the second control loop output a first power-assisted current value and a second power-assisted current value respectively, and then the first power-assisted current value or the second power-assisted current value is selected as a target power-assisted current value, and by means of the scheme, the steering power-assisted precision can be remarkably improved.

Described herein is a steering system for an electric commercial electric vehicle. The commercial electric vehicle steering system utilizes a recirculating ball steering system with a fixed height idler that allows for control of a track rod to mimic the geometry of a rack and pinion steering system. The fixed height idler includes a ball joint for distance control and a bushing to prevent rotation of the ball joint.

The subject of the present invention is a hydraulic pump assembly (1), electromechanically actuated, for a braking system of a vehicle. The hydraulic pump assembly (1) comprises: i) a hydraulic piston (2); ID an electric motor (3), extending along an axis (X-X), comprising a stator (31) and a rotor (32) comprising permanent magnets (320); iii) a rotary-linear motion conversion device (4). Said rotary-linear motion conversion device (4) comprises: a hollow nut screw shaft (41) comprising a nut screw cavity (410) extending along the axis (X-X); a screw shaft (42) extending along the main axis (X-X), at least partially housed in the nut screw cavity (410), with a main end (421) operatively connected to the hydraulic piston (2); motion transmission means (43) comprising recirculating balls (430) adapted to transmit the rotary motion of the nut screw shaft (41) to the screw shaft (42) so as to move it in an axial direction along the axis (X-X). In accordance with the invention, said permanent magnets (320) are housed directly on the hollow nut screw shaft (41).

The invention discloses electric recirculating ball steering gear testing equipment which comprises a rack, and a clamping and positioning mechanism, a static torque loading mechanism, a testing input mechanism and an upper computer are arranged on the rack. The clamping and positioning mechanism is used for fixing the recirculating ball steering gear; the static torque loading mechanism is located on one side of the clamping and positioning mechanism, the input end of the static torque loading mechanism is connected with the output end of the recirculating ball steering gear, and the static torque loading mechanism is used for applying static torque to the output end of the recirculating ball steering gear. The output end of the test input mechanism is connected with the input end of the recirculating ball steering gear and used for applying input torque to the input end of the recirculating ball steering gear. The upper computer is electrically connected with the static torque loading mechanism, the test input mechanism and the recirculating ball steering gear, and is used for controlling the output of the static torque loading mechanism and the test input mechanism. The overall integration degree is high, the testing precision is high, the automatic testing mode and the manual testing mode can be flexibly switched, and the requirement of the automobile industry for the high-performance testing of the electric recirculating ball steering gear can be met.

The utility model belongs to the field of automobile assembly, specifically relates to a lifting support of circulating ball steering gear. The support includes three L type lifting ring supports, one J type lifting hook and lifting rope, the L type lifting ring supports are evenly arranged on the circulating ball steering gear, the J type lifting hook is connected with the three L type lifting ring supports and the crane through the lifting rope, the L type lifting ring support is the metal bending plate, and one through hole is arranged on two bending respectively. Adopt the lifting support of the utility model, the vertical projection of the circulating ball steering gear after being lifted is located in the triangle surrounded by the vertical projection of the three lifting ring supports. The length of the three lifting ropes can be adjusted, the angle of the steering gear after being lifted is adjusted, and the worker is convenient to install.

The utility model relates to a packaging box, in particular to a packaging box of an electric recirculating ball steering gear. The packaging box comprises a tray, a ground cover is arranged on the tray, a rectangular box body with openings in the upper end and the lower end is arranged on the ground cover, and a top cover is arranged at a top port of the box body; and a plurality of layers of baffles are arranged in the box body. Due to the fact that all the parts of the packaging box are detachable, the electric recirculating ball steering gear can be loaded in the partition block in the loading process, then other parts of the packaging box can be assembled, the other parts of the packaging box can be disassembled in the unloading process, and the other parts of the packaging box are not prone to blocking use of a binding belt and a traveling crane. And the electric recirculating ball steering gear can be conveniently taken and placed, so that the electric recirculating ball steering gear can be greatly conveniently assembled and disassembled. The problem that an existing logistics appliance is inconvenient to assemble and disassemble an electric recirculating ball steering gear with large dead weight is solved.

The application discloses a circulating ball type steering telescopic shaft with automatic clearance-eliminating structure, which comprises a telescopic rod, a spline sleeve, a universal joint, a dustproof oil seal and a clearance-eliminating mechanism, one end of the telescopic rod is connected with the clearance-eliminating mechanism, the spline sleeve is sleeved on the telescopic rod and the clearance-eliminating mechanism, the other end of the telescopic rod is supported in the spline sleeve through the dustproof oil seal, and the universal joint is welded with the spline sleeve; the clearance-eliminating mechanism comprises a track block, a steel ball, a track sheet, a positioning block, a clearance-eliminating ring and a track pin, the track block, the track pin, the spline sleeve, the positioning block and the track sheet form an annular track, the annular track is divided into an inner track and an outer track, the steel ball is continuously and uniformly distributed in the inner track and the outer track, each steel ball is in contact with two circular arcs on two track sheets and a spline sleeve ball groove; and the clearance-eliminating ring is installed in a groove on the surface of the track block. The application increases the supporting area of the steel ball and the spline sleeve, improves the supporting strength, reduces stress concentration, and reduces the abrasion of the steel ball, the track sheet and the spline sleeve.

A transfer machine for cold plastic deformation and / or chip removal of at least one tubular profile is provided. The transfer machine has a base, a mounting table, a rotary table, and a plurality of electromechanical work units installed on the mounting table. Each electromechanical work unit has a first advance group having a first advance motor, a first advance recirculating ball screw, a first advance nut and a first tubular stem. The first advance recirculating ball screw is moved by the first advance motor. The first advance nut is engaged by the first advance recirculating ball screw. The first tubular stem, defining advancement and / or positioning of a first tool holder element, is engaged to and made integral with the first advance nut.

This invention relates to a brake caliper drive unit (200, 200'), comprising a recirculating ball screw-nut assembly located within a cylinder chamber (240) in a drive unit body (245), wherein the recirculating ball screw-nut assembly includes a threaded shaft (250) and a nut (260) having external teeth (265), the nut being screwed onto the threaded shaft (250) outside the threaded shaft, wherein the threaded shaft (250) and the nut (260) are aligned with the threaded shaft (250). The shaft extends in the direction of the drive axis (270), and wherein the threaded shaft (250) extends in the direction of extension from its front end to its rear end to the thrust plate (280), wherein the axial retaining ring (210) of the nut-screw (260) is inserted between the external teeth (265) of the nut-screw and the thrust plate (280), characterized in that the axial retaining ring (210) has a receiving portion (215) in which a passive damper (290, 295) is disposed.

The recirculating ball mechanical steering gear comprises a screw and nut assembly, a shell, the rocker arm shaft, two needle bearings, a steering vertical part, a side cover, an adjusting screw and a retainer, the rocker arm shaft is installed in the screw and nut assembly, the two needle bearings are located between the shell and the rocker arm shaft, the steering vertical part is located between the shell and the rocker arm shaft, and the retainer is located between the shell and the rocker arm shaft. The steering vertical arm is installed on the left side of the rocker arm shaft, the side cover is installed on the right side face of the shell, the adjusting screw is arranged in the side cover, and the retainer is installed between the adjusting screw and the rocker arm shaft. The rocker arm shaft is pushed to move through the adjusting screw, a gap generated by meshing of the sector teeth of the rocker arm shaft and the tooth surface of the screw-nut assembly can be accurately eliminated, it is guaranteed that gaps of a steering gear transmission pair in the middle and nearby positions are extremely small, and the stability of high-speed linear driving of an automobile is improved.

The invention relates to a steering gear, in particular to an electric recirculating ball steering gear of a heavy-duty commercial vehicle. The steering gear is composed of a mechanical circulating ball assembly, a power assisting module A arranged on one side of the mechanical circulating ball assembly and a power assisting module B arranged on the other side of the mechanical circulating ball assembly. The steering gear is simplified into three modules, the modular design of the steering gear can effectively improve the production efficiency, facilitate confirmation of fault points and reduce the repair difficulty, and platform building of the electric recirculating ball steering gear of the heavy-duty commercial vehicle is facilitated. The problems that an existing heavy truck steering gear is high in complexity, consequently, production efficiency is low, and maintenance is not facilitated are solved.

1. Name of the designed product: electric recirculating ball steering gear. 2. Use of the designed product: for automobile steering system. 3. Design points of the designed product: in shape. 4. Picture or photo best indicating the design points: perspective view 1.

The recirculating ball type electro-hydraulic steering gear assembly comprises a power recirculating ball steering gear, a screw rod, an input shaft and a valve body, the valve body is installed on the power recirculating ball steering gear, the screw rod is rotationally connected into the valve body, the input shaft is rotationally connected into the screw rod, and the input shaft is rotationally connected into the screw rod. Pressure chambers are distributed on the screw rod and the valve body, plunger assemblies which can be connected in an up-down sliding mode are arranged in the pressure chambers, steel balls are placed between the plunger assemblies and the input shaft, the valve body is connected with a flow divider valve seat, the flow divider valve seat is in threaded connection with a proportional electromagnet, and the proportional electromagnet is in threaded connection with the valve body. A diverter valve element capable of being connected in an up-down sliding mode is arranged in the diverter valve seat, a screw plug is connected to the bottom end of the diverter valve seat, and a spring is placed between the bottom end of the diverter valve element and the screw plug. The speed-following power assisting device has the advantages of being capable of achieving the speed-following power assisting function, simple in structure and relatively low in cost.

The utility model discloses a mechanical electric power-assisted recirculating ball steering gear, and belongs to the technical field of steering gears. Two ends of the steering gear shell are respectively provided with four threaded holes, two ends of the steering gear shell are provided with a first side baffle and a second side baffle, the first side baffle and the second side baffle are provided with fixing bolts, the fixing bolts are fixedly connected with the threaded holes, the middle of the first side baffle is provided with a hole, and a steering bearing is arranged around the hole. A steering bearing is arranged at the same axis of the second side baffle and the first side baffle, a steering screw is arranged in the steering bearing and comprises a second lead screw, first mounting shafts connected with the steering bearing are arranged at the two ends of the second lead screw, a rod is arranged at one end, close to one side of the first side baffle, of the first mounting shaft, the first lead screw is arranged in the middle of the rod, and a power-assisted threaded sleeve is arranged on the first lead screw. The fixing frame is provided with a steering bearing at the axis of the steering screw, and the steering bearing at the position of the fixing frame is fixedly connected with the rod. According to the utility model, power-assisted steering is provided for the steering screw through the power-assisted motor, so that the operation of a user is more convenient.

The utility model belongs to the field of automobile parts, and particularly relates to a sealing structure for an oil discharge hole of a recirculating ball steering gear. The oil drainage bolt comprises an oil drainage hole and an oil drainage bolt which are arranged on the recirculating ball steering gear, the oil drainage hole of the recirculating ball steering gear is connected with a cavity of the recirculating ball steering gear, the oil drainage bolt is connected with the oil drainage hole of the recirculating ball steering gear in a matched mode through taper threads, and the taper thread parameters of the oil drainage bolt plug are that the thread angle is 60 degrees, the thread pitch P is 1.5 mm, the thread crest width is 0.1 P, and the thread bottom arc transition radius R is 0.15 P. And a double-sealing mechanism that a straight thread bolt is replaced by a thread bolt and sealant is coated in the bolt and the oil discharge hole achieves an efficient sealing effect.

The utility model relates to automobile steering system detection equipment technical field discloses a kind of free clearance detection devices of recirculating ball steering gear, including detection table, the top of detection table is placed with recirculating ball steering gear body, motor is connected with the docking mechanism for connecting motor and recirculating ball steering gear body between recirculating ball steering gear body, and the inner wall of installation side plate is fixedly connected with ranging sensor receiving module, and one end of recirculating ball steering gear body near installation side plate is installed ranging sensor reflection module by magnet magnetic attraction.The utility model is equipped with ranging sensor receiving module and ranging sensor emission module, the accurate detection of the free clearance of recirculating ball steering gear is realized, the efficiency and accuracy of detection are improved, and simultaneously, the docking mechanism is equipped, and recirculating ball steering gear is conveniently installed and disassembled, and different recirculating ball steering gears are conveniently detected, and the practicability of detection device is improved.

The utility model discloses a dynamic calibration device for a large-angle sensor, which relates to the technical field of automobile electronic manufacturing and processing and comprises a mounting fixture, an electric recirculating ball steering gear subassembly is arranged at the upper part of the mounting fixture, and an input module is arranged at the top of the electric recirculating ball steering gear subassembly. An output module is arranged at the end of the electric recirculating ball steering gear sub-assembly, and the electric recirculating ball steering gear sub-assembly, the input module and the output module are jointly connected with an industrial personal computer. According to the utility model, the input module, the output module and the industrial personal computer are integrated together to form a complete calibration testboard, so that the operation is convenient, the stability and reliability of the equipment are improved, the calibration time is greatly shortened by the automatic calibration process, the production efficiency is improved, and meanwhile, the high-precision sensor is matched with the industrial personal computer, so that the production efficiency is improved. The accuracy and the reliability of the calibration result are ensured, and powerful guarantee is provided for the control performance and the safety of the commercial vehicle.

The utility model discloses a tail end limiting anti-pull-in structure of an electric recirculating ball steering gear. The tail end limiting anti-pull-in structure comprises a shell, a steering assembly and a bearing assembly, wherein the steering assembly and the bearing assembly are arranged in the shell; the shell comprises a first accommodating part provided with the steering assembly and a second accommodating part provided with a bearing assembly; the bearing assemblies are both lower than the upper boss end face and the lower boss end face of the second containing part, and when the steering assembly moves in the first containing part and the second containing part, the steering assembly abuts against the upper boss end face and the lower boss end face of the second containing part so as to be prevented from making contact with bearing inner rings. The end face of the bearing assembly is arranged to be lower than the upper boss end face and the lower boss end face of the second containing part, so that the lead screw nut can make contact with the upper boss end face and the lower boss end face of the second containing part when moving to the upper limit position and the lower limit position, locking with the bearing inner ring is avoided, and the suction problem is effectively solved.