Live simulation test system for automobile steering engine

Abstract

The invention discloses a real-time simulation test system for an automobile steering engine, which is characterized in that a mounting table is arranged in the middle of the bottom of a box body, seven nozzles are arranged on each of the front side wall and the rear side wall of the box body, each nozzle can spray a mud-water mixture while swinging, and a left cover and a right cover are mounted at the upper end of the box body through hinges; the first connecting frame, the first rotating frame, the screw hole sliding block, the canopy nut, the end connector and the damper form a set of resistance guide adjusting device, the resistance of the damper can be adjusted according to the magnetic field intensity, the left side wall and the right side wall of the box body are each provided with two sets of resistance guide adjusting devices, and the two steering machines are fixedly installed on the installation table. The two ends of the two steering machines are connected with the corresponding resistance guiding and adjusting devices respectively. The swing plate is installed at the upper end of the box body and can move left and right and turn over up and down, the movable positioning frame and the input motor are installed on the upper side and the lower side of the swing plate respectively, and the input motor can drive the two steering engine input shafts to rotate through the two synchronous belts.

Description

Technical Field

[0001] The invention relates to the technical field of automobile steering gear test, in particular to a real-time simulation test system for an automobile steering gear. Background Art

[0002] In recent years, my country's automobile manufacturing technology has made great progress and achieved fruitful results. In the process of automobile manufacturing, durability testing of parts is very necessary. However, real vehicle testing is not only dangerous but also expensive. Manufacturers prefer to use test equipment to simulate tests under different working conditions. This method is not only safe, convenient, low-cost, but also can achieve relatively ideal results. As one of the most important parts of a car, the steering gear needs to undergo strict performance tests and durability tests in production to verify its reliability and obtain the best working state. Among them, the REPS steering system (rack-type electric power steering system) is a very widely used steering gear mechanism. In the REPS steering system, the motor is directly arranged on the rack. The power-assisted system is amplified by the belt and ball screw transmission mechanism to assist the driver in steering the vehicle when driving the vehicle. The mud and water test is a conventional DV / PV test that REPS must do. Therefore, it is very necessary to develop a real-time simulation test system for REPS. Summary of the invention

[0003] In order to solve the deficiencies of the prior art, the purpose of the present invention is to provide a real-time simulation test system for an automobile steering gear, which mainly includes a box body, a damper, a first connecting frame, a left cover, a right cover, a water inlet pipe, a spiral hose, a sealing cover, a swing plate, a nozzle, a swing plate, an input motor, a tower pulley, an end connector, a screw hole slider, a left swing arm, a mobile positioning frame, a right swing arm, a left upper shaft, a left lower shaft, a right upper shaft, a right lower shaft, a right sliding positioning block, a right locking knob, a right positioning knob, a left positioning knob, a left locking knob, and a left sliding positioning block, characterized in that: a front side T-shaped groove and a rear side T-shaped groove are respectively arranged on the front and rear sides of the interior of the box body, and seven ball socket structures are respectively arranged on the front side box wall and the rear side box wall of the box body, A mounting platform is provided at the middle position of the bottom of the box body, two inclined structures are provided on the left and right sides of the mounting platform, and a water filter hole and a water outlet pipe are transversely provided at the bottom end of the inclined structure, seven nozzles are provided on the front and rear side walls of the box body, each nozzle can spray mud and water mixture while swinging, two water inlet pipes are provided on the front and rear sides of the box body, each water inlet pipe is connected with the corresponding nozzle through seven spiral hoses, and the left cover and the right cover are installed on the upper end of the box body through hinges; the three guide round rods in the first connecting frame connect the triangular arc plate at the left end and the first circular ring frame at the right end into a whole, the first rotating frame is installed on the right side of the first circular ring frame and constitutes a rotating pair, and the screw hole slider is installed inside the first rotating frame and The movable pair is constituted, and the end connector is positioned by the umbrella nut and the screw hole slider; the cavity inside the damper is filled with magnetorheological fluid, and an electromagnetic coil is arranged inside its side wall. Three through holes are arranged on the piston plate in the middle of the damping guide rod, and the piston plate divides the magnetorheological fluid inside the damper into two parts, left and right. The resistance of the damper can be adjusted by the magnetic field strength of the electromagnetic coil; the damper is located at the center of the first connecting frame, and the two ends of the damping guide rod are fastened to the two ends of the first connecting frame; the first connecting frame is installed on the left side wall of the box body and constitutes a movable pair, and the damper inside it is fixedly connected to the box body; the first connecting frame, the first rotating frame, the screw hole slider, the umbrella nut, the end connector, and the damper constitute A set of resistance guide adjustment devices is formed, and two sets of resistance guide adjustment devices are installed on the left side wall and the right side wall of the box body respectively; two steering gears are fixedly installed on the mounting table, and the two ends of the two steering gears are respectively connected to the corresponding resistance guide adjustment devices; a sliding positioning groove is provided in the middle position of the swing plate, and the two ends of the swing plate are respectively rotatably connected with the left sliding positioning block and the right sliding positioning block, the left sliding positioning block and the right sliding positioning block are respectively installed in the rear T-shaped groove and the front T-shaped groove and form a moving pair, and the left positioning knob and the right positioning knob respectively lock the positions of the left sliding positioning block and the right sliding positioning block through a threaded structure; the left locking knob and the right locking knob are installed at both ends of the swing plate and lock the inclination angle of the swing plate through a threaded structure;The mobile positioning frame and the input motor are respectively installed on the upper and lower sides of the sliding positioning groove. The rear ends of the left swing arm and the right swing arm are both rotatably installed on the mobile positioning frame. Two pulleys are coaxially arranged on the tower pulley. The tower pulley is tightly connected to the output shaft of the input motor through the tower pulley shaft. The left upper shaft and the right upper shaft are respectively rotatably installed on the front ends of the left swing arm and the right swing arm. The tower pulley drives the rotation of the left upper shaft and the right upper shaft through two synchronous belts. The upper ends of the left lower shaft and the right lower shaft are respectively installed inside the left upper shaft and the right upper shaft and can be extended and retracted. The lower ends of the left lower shaft and the right lower shaft are respectively connected to the input shafts of the two steering gears. ;

[0004] As a further solution of the present invention: a plurality of obliquely penetrating drainage holes are arranged below the front T-slot and the rear T-slot, the upper end of each drainage hole is connected to the interior of the front T-slot or the rear T-slot, and the lower end of each drainage hole is connected to the interior of the box body. The drainage holes can guide the muddy water in the side T-slot into the box body.

[0005] As a further solution of the present invention: a circular T-shaped groove is arranged inside the right side of the first circular ring frame, and two arc-shaped sliders are arranged at both ends of the left side of the first rotating frame. The two arc-shaped sliders are installed in the circular T-shaped groove inside the first circular ring frame, so that the first rotating frame can rotate freely, and a straight T-shaped groove is arranged inside the right side of the first rotating frame.

[0006] As a further solution of the present invention: two pulleys are coaxially arranged on the tower pulley, and the diameter of the lower pulley is larger than the diameter of the upper pulley.

[0007] As a further solution of the present invention: the input motor, the left swing arm, the right swing arm and related connecting parts are sealed by a sealing cover, and the sealing cover is made of flexible rubber.

[0008] As a further solution of the present invention: a nozzle is arranged at the front end of the nozzle, a positioning spherical surface is arranged at the rear end of the nozzle, a swinging spherical surface is arranged behind the positioning spherical surface, and an interface is arranged at the rear end of the swinging spherical surface.

[0009] As a further solution of the present invention: transparent glass observation windows are provided on both the left cover and the right cover.

[0010] The beneficial effects of the present invention are as follows: (1) The positions of the input shafts of different types of steering gears are different, and the inclination angles of the input shafts are also different. The swing plate can be moved left and right to adjust the position, and can be swung up and down to adjust the inclination angle, thereby meeting the requirements for connecting with the input shafts of different types of steering gears. (2) The resistance of the four connecting frames can be adjusted according to the magnetic field strength of the coils inside them. The greater the magnetic field strength of the coils, the greater the resistance. Therefore, the corresponding resistance value can be set according to the different models of steering gears to simulate the actual working load of the steering gear. (3) Two pulleys are coaxially arranged on the tower pulley, and the diameter of the lower pulley is larger than the diameter of the upper pulley, so that the transmission ratios between the input motor and the two steering gear input shafts are different, so that the two steering gears work one fast and one slow, simulating the working conditions of the steering gears under different speeds. (4) A circular frame is provided at the inner end of each connecting frame, a rotating frame is installed on the circular frame to form a rotating pair, a straight T-shaped slot is provided on the rotating frame, a movable screw hole slider is provided in the straight T-shaped slot, and the end connector and the screw hole slider form a threaded pair, so that the end connector can be positioned at any position in the circular frame, thereby meeting the connection requirements of different models of steering gears. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0012] Figure 2 It is a schematic diagram of the overall structure of the present invention.

[0013] Figure 3 It is a schematic diagram of the longitudinal cross-sectional structure of the present invention.

[0014] Figure 4 It is a partial enlarged cross-sectional schematic diagram of the position of the first connecting frame in the present invention.

[0015] Figure 5 It is a schematic diagram of the transverse cross-sectional structure of the present invention.

[0016] Figure 6 It is a schematic diagram of the nozzle swing structure principle in the present invention.

[0017] Figure 7 It is a structural schematic diagram of the mobile positioning frame in the present invention.

[0018] Figure 8 It is a schematic diagram of the structure of the swing plate in the present invention.

[0019] Fig. 9 It is a schematic diagram of the structure of the nozzle in the present invention.

[0020] Fig.10 It is a schematic structural diagram of the first crankshaft wheel in the present invention.

[0021] Reference numerals: 1 housing, 101 first water outlet pipe, 102 second water outlet pipe, 103 front T-shaped groove, 104 right drainage hole, 105 clearance port, 106 first water filter hole, 107 second water filter hole, 108 mounting platform, 109 left drainage hole, 2 damper, 201 damping guide rod, 3 first connecting frame, 301 first circular frame, 302 first rotating frame, 4 second connecting frame, 401 second circular frame, 402 second rotating frame Moving frame, 5 side cover, 6 left cover, 7 right cover, 8 fourth connecting frame, 801 fourth ring frame, 802 fourth rotating frame, 9 water inlet pipe, 10 spiral hose, 11 sealing cover, 12 third connecting frame, 1201 third ring frame, 1202 third rotating frame, 13 swing plate, 1301 follow-up ear, 14 nozzle, 1401 positioning spherical surface, 1402 swing spherical surface, 15 first steering gear, 16 second steering gear, 17 swing plate , 1701 sliding positioning groove, 1702 right threaded hole, 1703 left threaded hole, 18 input motor, 19 right pulley, 20 left pulley, 21 left synchronous belt, 22 right synchronous belt, 23 tower pulley, 24 end connector, 25 umbrella cover nut, 26 screw hole slider, 27 tower pulley shaft, 28 left swing arm, 29 mobile positioning frame, 2901 square plate, 2902 optical axis, 30 right swing arm, 31 left upper axis, 32 left lower axis, 33 Right upper shaft, 34 right lower shaft, 35 right sliding positioning block, 36 right locking knob, 37 right positioning knob, 38 left positioning knob, 39 left locking knob, 40 left sliding positioning block, 41 first crankshaft wheel, 4101 rotating shaft, 4102 nozzle pulley, 4103 circular plate, 4104 toggle shaft, 42 second crankshaft wheel, 43 first guide wheel, 44 driving wheel, 45 nozzle swing motor, 46 second guide wheel, 47 nozzle swing timing belt. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with specific embodiments. The illustrative embodiments and descriptions of the present invention are used to explain the present invention but are not intended to limit the present invention.

[0023] like Figure 1-10As shown, the real-time simulation test system of the automobile steering gear mainly includes a box body 1, a damper 2, a first connecting frame 3, a second connecting frame 4, a side cover 5, a left cover 6, a right cover 7, a fourth connecting frame 8, a water inlet pipe 9, a spiral hose 10, a sealing cover 11, a third connecting frame 12, a swing plate 13, a nozzle 14, a first steering gear 15, a second steering gear 16, a swing plate 17, an input motor 18, a right pulley 19, a left pulley 20, a left synchronous belt 21, a right synchronous belt 22, a tower pulley 23, an end connector 24, an umbrella cover nut 25, a screw hole slider 26, a tower pulley shaft 27, a left swing arm 28, a movable positioning frame 29, a right swing arm 30, a left upper shaft 31, a left lower shaft 32, a right upper shaft 33, a right lower shaft 34, a right sliding positioning block 35, and a right lock wheel. Knob 36, right positioning knob 37, left positioning knob 38, left locking knob 39, left sliding positioning block 40, first crankshaft wheel 41, second crankshaft wheel 42, first guide wheel 43, driving wheel 44, nozzle swing motor 45, second guide wheel 46, nozzle swing timing belt 47, characterized in that: a front T-shaped groove 103 is longitudinally arranged at the upper end of the inner front side of the box body 1, and a plurality of obliquely penetrating right drainage holes 104 are arranged below the front T-shaped groove 103, the upper end of each right drainage hole 104 is connected to the interior of the front T-shaped groove 103, and the lower end of each right drainage hole 104 is connected to the interior of the box body 1, and the right drainage hole 104 can guide the muddy water in the front T-shaped groove 103 into the box body 1 to avoid blockage in the front T-shaped groove 103. The two ends of the front T-shaped groove 103 are provided with two clearance openings 105; a rear T-shaped groove is arranged horizontally and vertically on the upper end of the inner rear side of the box body 1, and a plurality of obliquely penetrating left drainage holes 109 are arranged below the rear T-shaped groove. The upper end of each left drainage hole 109 is connected with the interior of the rear T-shaped groove, and the lower end of each left drainage hole 109 is connected with the interior of the box body 1. The left drainage hole 109 can guide the muddy water in the rear T-shaped groove into the box body 1 to avoid clogging in the rear T-shaped groove. Two clearance openings are arranged at both ends of the rear T-shaped groove; seven ball-socket structures are arranged at equal intervals in the longitudinal direction inside the front box wall of the box body 1, and seven ball-socket structures are arranged at equal intervals in the longitudinal direction inside the rear box wall of the box body 1, and the positions of the front and rear sets of ball-socket structures correspond to each other; the bottom of the box body 1 A mounting platform 108 is provided in the middle of the mounting platform 108, and a plurality of inverted T-shaped grooves are longitudinally provided on the mounting platform 108. The mounting platform 108 can be used to install the steering gear to be tested; two inclined structures are provided on the left side of the mounting platform 108, and a plurality of first water filter holes 106 are transversely provided at the bottom ends of the two inclined structures, and the lower ends of all the first water filter holes 106 are connected to the first water outlet pipe 101; two inclined structures are provided on the right side of the mounting platform 108, and a plurality of second water filter holes 107 are transversely provided at the bottom ends of the two inclined structures, and the lower ends of all the second water filter holes 107 are connected to the second water outlet pipe 102; the first water outlet pipe 101 and the second water outlet pipe 102 are used to discharge muddy water for testing, and both are connected to the muddy water supply device to realize circulation;The left cover 6 is provided with a transparent glass observation window, the left end of the left cover 6 is hingedly mounted on the upper left end of the box body 1, and two handles are mounted on the front and rear sides of the right end of the left cover 6 to facilitate opening and closing the left cover 6; the right cover 7 is provided with a transparent glass observation window, the right end of the right cover 7 is hingedly mounted on the upper right end of the box body 1, and two handles are mounted on the front and rear sides of the left end of the right cover 7 to facilitate opening and closing the right cover 7. ;

[0024] like Figure 3 , Figure 4 As shown, three guide round rods are arranged on the first connecting frame 3, the right ends of the three guide round rods are fastened to the first circular frame 301, and the left ends of the three guide round rods are fixedly connected through a triangular arc plate. The first connecting frame 3 is installed on the left side wall of the box body 1 and can move left and right. A circular T-shaped groove is arranged inside the right side of the first circular frame 301; the first rotating frame 302 is a straight plate-shaped structure, and two arc-shaped sliders are arranged at the left ends of the first rotating frame 302. The two arc-shaped sliders are installed in the circular T-shaped groove inside the first circular frame 301, so that the first rotating frame 302 can rotate freely. A straight T-slot; the screw hole slider 26 is a square block structure, and a threaded hole is arranged at its center position. The screw hole slider 26 is installed in the straight T-slot inside the first rotating frame 302 and constitutes a moving pair; the right end of the end connector 24 is vertically provided with a connecting circular hole, and the left end of the end connector 24 is a horizontal threaded rod structure. The umbrella nut 25 is installed at the left end of the end connector 24 and constitutes a threaded pair. The left end of the end connector 24 is installed with the threaded hole in the center of the screw hole slider 26 and constitutes a threaded pair. After the umbrella nut 25 is rotated and pressed against the first rotating frame 302, the position of the end connector 24 on the first rotating frame 302 can be fixed by the double nut locking principle.

[0025] The damper 2 is provided with a sealed cavity inside, the cavity is filled with magnetorheological fluid, and an electromagnetic coil is provided inside the side wall of the damper 2; a piston plate is provided in the middle position of the damping guide rod 201, and three through holes are provided on the piston plate at equal intervals. The damping guide rod 201 is installed inside the damper 2, and the piston plate divides the cavity inside the damper 2 into two left and right parts, and the magnetorheological fluid in the left and right parts are connected through the three through holes on the piston plate; the above-mentioned electromagnetic coil can generate a magnetic field inside the damper 2 after being energized, and the magnetorheological fluid can change its viscosity according to the strength of the magnetic field, thereby realizing the damper Adjustment of resistance size; the damper 2 is fixedly installed on the left side wall of the box body 1 and is located at the inner center position of the first circular frame 301. At the same time, the left end of the damping guide rod 201 is fixedly connected to the triangular arc plate at the left end of the first connecting frame 3, and the right end of the damping guide rod 201 is fixedly connected to the first circular frame 301 at the right end of the first connecting frame 3, so that the first connecting frame 3 can drive the damping guide rod 201 to move left and right, so that the magnetorheological fluid in the internal cavity of the damper 2 flows mutually on the left and right sides of the piston plate, thereby providing resistance for the left and right movement of the first connecting frame 3, thereby simulating the resistance of wheel rotation under actual working conditions.

[0026] The second connecting frame 4 has the same structure as the first connecting frame 3. A second circular frame 401 is provided at the right end of the second connecting frame 4. The second rotating frame 402 has the same structure as the first rotating frame 302. The second rotating frame 402 is installed on the right side of the second circular frame 401 and forms a rotating pair. A movable screw hole slider is provided in the straight T-shaped groove inside the second rotating frame 402. An end connector and an umbrella nut are also provided on the right side of the screw hole slider. The umbrella nut and the screw hole slider fix the position of the end connector on the second rotating frame 402 through the double nut locking principle. The second connecting frame 4 is installed on the left side wall of the box body 1 and can move left and right, and the second connecting frame 4 is located on the front side of the first connecting frame 3. , a damper is also provided at the inner center position of the second connecting frame 4, and the two ends of the damping guide rod in the damper are fixedly connected to the two ends of the second connecting frame 4 respectively; the third connecting frame 12 has the same structure as the second connecting frame 4 but is installed in the opposite direction, a third circular frame 1201 is provided at the left end of the third connecting frame 12, the third circular frame 1201 has the same structure as the second circular frame 401, the third rotating frame 1202 has the same structure as the second rotating frame 402, the third rotating frame 1202 is installed on the left side of the third circular frame 1201 and constitutes a rotating pair, a movable screw hole slider is provided in the straight T-shaped groove inside the third rotating frame 1202, and an end connector and an umbrella cover are provided on the left side of the screw hole slider. Nut, the umbrella nut and the screw hole slider fix the position of the end connector on the third rotating frame 1202 through the double nut locking principle; the third connecting frame 12 is installed on the right side wall of the box body 1 and can move left and right, and the position of the third connecting frame 12 corresponds coaxially to the position of the second connecting frame 4, and a damper is also provided at the inner center position of the third connecting frame 12, and the two ends of the damping guide rod in the damper are respectively fixedly connected to the two ends of the third connecting frame 12; the fourth connecting frame 8 has the same structure as the third connecting frame 12, and the left end of the fourth connecting frame 8 is provided with a fourth circular frame 801, and the fourth circular frame 801 has the same structure as the third circular frame 1201, and the fourth rotating frame 802 is connected to the third rotating frame 12 02 has the same structure, the fourth rotating frame 802 is installed on the left side of the fourth circular frame 801 and constitutes a rotating pair, a movable screw hole slider is arranged in the straight T-shaped groove inside the fourth rotating frame 802, and an end connector and an umbrella nut are arranged on the left side of the screw hole slider, and the umbrella nut and the above-mentioned screw hole slider fix the position of the above-mentioned end connector on the fourth rotating frame 802 through the double nut locking principle; the fourth connecting frame 8 is installed on the right side wall of the box body 1 and can move left and right, and the position of the fourth connecting frame 8 is coaxially corresponding to the position of the first connecting frame 3, and a damper is also arranged at the internal center position of the fourth connecting frame 8, and the two ends of the damping guide rod in the damper are respectively fixedly connected to the two ends of the fourth connecting frame 8.

[0027] The first steering gear 15 and the second steering gear 16 are both fixedly mounted on the mounting platform 108 by bolts, the left end of the first steering gear 15 is fastened to the end connector 24 on the right side of the first rotating frame 302, and the right end of the first steering gear 15 is fastened to the end connector on the left side of the fourth rotating frame 802; the left end of the second steering gear 16 is fastened to the end connector on the right side of the second rotating frame 402, and the right end of the second steering gear 16 is fastened to the end connector on the left side of the third rotating frame 1202.

[0028] like Figure 3 , Figure 5 As shown, the right end of the right sliding positioning block 35 is a square structure, the left end of the right sliding positioning block 35 is provided with a stepped cylindrical structure, the interior of the right sliding positioning block 35 is provided with a through threaded hole, the square structure at the right end of the right sliding positioning block 35 is installed in the front T-shaped slot 103 and constitutes a moving pair; the left end of the right positioning knob 37 is a knob structure, and the right end is a threaded rod structure. The right positioning knob 37 is coaxially installed in the threaded hole in the right sliding positioning block 35. Turning the right positioning knob 37 clockwise can make its right end press the front T-shaped slot 103, thereby fixing the position of the right sliding positioning block 35, and turning it counterclockwise can make its right end press the front T-shaped slot 103, thereby fixing the position of the right sliding positioning block 35. Moving the right positioning knob 37 can unlock the right sliding positioning block 35; the left sliding positioning block 40 and the right sliding positioning block 35 are in a left-right symmetrical structure, and the square structure at the left end of the left sliding positioning block 40 is installed in the rear T-slot and constitutes a moving pair; the left positioning knob 38 and the right positioning knob 37 are in a left-right symmetrical structure, and the left positioning knob 38 is coaxially installed in the threaded hole in the left sliding positioning block 40. Rotating the left positioning knob 38 clockwise can press its left end against the rear T-slot, thereby fixing the position of the left sliding positioning block 40, and rotating the left positioning knob 38 counterclockwise can unlock the left sliding positioning block 40.

[0029] like Figure 5 , Figure 8As shown, the swing plate 17 is a plate-like structure, with a sliding positioning groove 1701 in the middle, two coaxial and left-right symmetrical stepped circular holes are provided at both ends of the swing plate 17, a right threaded hole 1702 is vertically provided on the upper side of the stepped circular hole at the right end, and a left threaded hole 1703 is vertically provided on the upper side of the stepped circular hole at the left end; the swing plate 17 is installed on the upper side of the box body 1, and the left end of the swing plate 17 is rotatably connected to the right end of the left sliding positioning block 40, and the right end of the swing plate 17 is rotatably connected to the left end of the right sliding positioning block 35, so that The swing plate 17 can not only move left and right, but also swing up and down; the upper end of the right locking knob 36 is a knob structure, and the lower end is a threaded rod structure. The right locking knob 36 is installed in the right threaded hole 1702 to form a threaded pair. The left locking knob 39 has the same structure as the right locking knob 36. The left locking knob 39 is installed in the left threaded hole 1703 to form a threaded pair. The left locking knob 39 and the right locking knob 36 are rotated clockwise so that their lower ends respectively press the left sliding positioning block 40 and the right sliding positioning block 35, thereby locking the up and down swinging of the swing plate 17.

[0030] like Figure 3 , Figure 5As shown, the lower end of the movable positioning frame 29 is a square plate 2901, the upper end of which is provided with a stepped optical axis 2902, and the inside of which is provided with a through circular hole. The movable positioning frame 29 is installed on the upper side of the sliding positioning groove 1701 and can move left and right; the input motor 18 is installed on the lower side of the sliding positioning groove 1701, and the square plate 2901 and the input motor 18 are fastened and connected by four screws, and the two clamp the swing plate 17 to fix the movable positioning frame 29. After loosening the above four screws, the position of the movable positioning frame 29 can be readjusted; the left The swing arm 28 and the right swing arm 30 are both plate-like structures, and the rear ends of both are rotatably mounted on the optical axis 2902; the tower pulley 23 is coaxially provided with two pulleys, and the diameter of the lower pulley is larger than the diameter of the upper pulley; the upper end of the tower pulley shaft 27 is coaxially and tightly connected with the tower pulley 23, and the tower pulley shaft 27 is coaxially rotatably mounted inside the mobile positioning frame 29, and the lower end of the tower pulley shaft 27 is coaxially and tightly connected with the output shaft of the input motor 18; the upper end of the left upper shaft 31 is provided with a left pulley 20, and the lower end of the left upper shaft 31 is vertically provided with a square The upper left shaft 31 is rotatably mounted on the front end of the left swing arm 28; the upper end of the lower left shaft 32 is a square rod structure, which is installed in conjunction with the square guide hole at the lower end of the upper left shaft 31 to form a moving pair, and the lower end of the lower left shaft 32 is provided with an interface, which can be connected to the input shaft of the steering gear; the left synchronous belt 21 is installed between the lower pulley of the left pulley 20 and the tower pulley 23, and constitutes a synchronous belt transmission structure; the upper end of the upper right shaft 33 is provided with a right pulley 19, and the lower end of the upper right shaft 33 is vertically provided with a square guide hole, and the upper right shaft 33 is provided with a square guide hole. It is rotatably mounted on the front end of the right swing arm 30; the upper end of the right lower shaft 34 is a square rod structure, which is installed in conjunction with the square guide hole at the lower end of the right upper shaft 33 to form a moving pair, and the lower end of the right lower shaft 34 is provided with an interface, which can be connected to the input shaft of the steering gear; the right synchronous belt 22 is installed between the right pulley 19 and the upper pulley of the tower pulley 23, and constitutes a synchronous belt transmission structure; the sealing cover 11 can be made of flexible rubber, so as to achieve sealing of components such as the input motor 18, the left swing arm 28, the right swing arm 30, and the synchronous belt transmission structure.

[0031] like Figure 6 , Fig. 9 , Fig.10As shown, the front end of the nozzle 14 is provided with a nozzle, and the rear end of the nozzle is provided with a positioning spherical surface 1401, the diameter of the positioning spherical surface 1401 is equal to the diameter of the ball-socket structure inside the front and rear walls of the box body 1, and a swinging spherical surface 1402 is provided behind the positioning spherical surface 1401, and the rear end of the swinging spherical surface 1402 is provided with an interface; each of the seven ball-socket structures in the rear wall of the box body 1 is equipped with a nozzle 14, and each ball-socket structure is installed with the corresponding positioning spherical surface 1401 to form a spherical pair; seven small ball sockets are provided inside the upper side of the swing plate 13, and two left-right symmetrical follower ears 1301 are provided on the lower side of the swing plate 13, and a smooth round hole is provided at the center of each follower ear 1301, and the swing plate 13 is provided with a plurality of small ball sockets, and the swing plate 13 is provided with two left-right symmetrical follower ears 1301. The seven small ball sockets on the upper side of the moving plate 13 are respectively installed with the swinging spherical surfaces 1402 in the seven nozzles 14 to form a spherical pair; the right end of the first crankshaft wheel 41 is provided with a rotating shaft 4101, and a nozzle pulley 4102 is coaxially provided on the left side of the rotating shaft 4101, and a circular plate 4103 is coaxially provided on the left side of the nozzle pulley 4102, and a cylindrical toggle shaft 4104 is provided on the left side of the circular plate 4103. The rotating shaft 4101 of the first crankshaft wheel 41 is rotatably installed on the rear side wall of the box body 1, and at the same time, the toggle shaft 4104 of the first crankshaft wheel 41 is installed with the smooth circular hole in the left follower ear 1301 to form a rotating pair and a moving pair; the second crankshaft wheel 42 has the same structure as the first crankshaft wheel 41. The second crankshaft wheel 42 The rotating shaft is rotatably mounted on the rear wall of the box body 1, and the toggle shaft of the second crankshaft wheel 42 is matched with the smooth round hole in the follower ear 1301 on the right to form a rotating pair and a moving pair; the nozzle swing motor 45 is fixedly mounted on the inside of the rear wall of the box body 1, and a driving wheel 44 is coaxially fastened on the output shaft of the nozzle swing motor 45. The first guide wheel 43 is rotatably mounted on the rear wall of the box body 1 and is located on the left side of the nozzle swing motor 45. The second guide wheel 46 is rotatably mounted on the rear wall of the box body 1 and is located on the right side of the nozzle swing motor 45; the nozzle swing synchronous belt 47 is installed between the first crankshaft wheel 41, the second crankshaft wheel 42, the first guide wheel 43, the driving wheel 44, and the second guide wheel 46, so that the nozzle swing The driving motor 45 can simultaneously drive the rotation of the first crankshaft wheel 41 and the second crankshaft wheel 42 through the nozzle swing synchronous belt 47, so that the swing plate 13 drives the seven nozzles 14 on the rear wall of the box body 1 to swing, and then the muddy water can be sprayed on the steering gear being tested; seven spiral hoses 10 are connected to one end of the water inlet pipe 9, and the spiral hoses 10 can be extended and twisted to a certain extent. The other ends of the seven spiral hoses 10 are respectively connected to the interfaces at the rear ends of the seven nozzles 14 on the rear wall of the box body 1, and the other end of the water inlet pipe 9 is connected to the muddy water supply device, which can provide a muddy water mixture with a certain pressure; the side cover 5 is installed on the rear side of the box body 1, and the side cover 5 can shield and seal the swing plate 13, spiral hose 10 and other components.

[0032] like Figure 3 , Figure 6 As shown, a nozzle 14 is installed in each of the seven ball-socket structures in the front wall of the box body 1, and each ball-socket structure is installed in cooperation with the corresponding positioning spherical surface 1401 to form a spherical pair; a swing plate is also provided on the front wall of the box body 1, and the seven small ball sockets on the upper side of the swing plate are respectively installed in cooperation with the swing spherical surfaces 1402 in the corresponding seven nozzles to form a spherical pair; the first crankshaft wheel, the second crankshaft wheel, the first guide wheel, the nozzle swing motor, the driving wheel, the second guide wheel, the nozzle swing synchronous belt, the water inlet pipe, and the spiral hose are also installed on the front wall of the box body 1, and the installation position and connection method of the above-mentioned parts are the same as those of the parts on the rear wall of the box body 1, and the water inlet pipe on the outside of the front wall of the box body 1 is also connected to the mud and water supply device; a side cover is also provided on the outside of the front wall of the box body 1.

[0033] The working process of the automobile steering gear real-time simulation test system is briefly described as follows:

[0034] ① Fix the first steering gear 15 and the second steering gear 16 on the upper side of the mounting platform 108 by bolts, and keep a suitable distance between the two. Then, connect the two ends of the first steering gear 15 to the first connecting frame 3 and the fourth connecting frame 8 respectively, and connect the two ends of the second steering gear 16 to the second connecting frame 4 and the third connecting frame 12 respectively.

[0035] ② Move the swing plate 17 to a suitable position, and tighten the left positioning knob 38 and the right locking knob 36 to lock the position of the swing plate 17.

[0036] ③ Rotate the tilt angle of the swing plate 17 so that the upper left shaft 31 and the upper right shaft 33 are parallel to the input shafts of the two steering gears, and tighten the left locking knob 39 and the right locking knob 36 to lock the tilt angle of the swing plate 17.

[0037] ④ Adjust the position of the movable positioning frame 29, and rotate the left swing arm 28 and the right swing arm 30 so that the upper left shaft 31 and the upper right shaft 33 are respectively aligned with the input shafts of the two steering gears, and tighten the four screws between the input motor 18 and the movable positioning frame 29 to fix the position of the movable positioning frame 29.

[0038] ⑤ Extend the lower left shaft 32 and the lower right shaft 34 downward, so that the interface at the lower end of the lower left shaft 32 is connected to the input shaft of the first steering gear 15, and the interface at the lower end of the lower right shaft 34 is connected to the input shaft of the second steering gear 16.

[0039] ⑥ Close the left cover 6 and the right cover 7, set the magnetic field strength inside the four dampers 2 according to the steering gear parameters, so as to adjust the resistance value of the four dampers 2, and the nozzles 14 on the front and rear sides of the box body 1 swing while spraying the mud-water mixture, and the input motor 18 drives the two steering gears to perform test work through the synchronous belt transmission structure.

Claims

1. The real-time simulation test system of automobile steering gear mainly includes a box, a damper, a first connecting frame, a left cover, a right cover, a water inlet pipe, a spiral hose, a sealing cover, a swing plate, a nozzle, a swing plate, an input motor, a tower pulley, an end connector, a screw hole slider, a left swing arm, a mobile positioning frame, a right swing arm, a left upper shaft, a left lower shaft, a right upper shaft, a right lower shaft, a right sliding positioning block, a right locking knob, a right positioning knob, a left positioning knob, a left locking knob, and a left sliding positioning block, and is characterized in that: The front and rear sides of the box body are respectively provided with a front T-shaped groove and a rear T-shaped groove, the front and rear walls of the box body are respectively provided with seven ball socket structures, a mounting platform is provided at the middle position of the bottom of the box body, two inclined structures are provided on the left and right sides of the mounting platform, and a water filter hole and a water outlet pipe are transversely provided at the bottom end of the inclined structure, seven nozzles are respectively provided on the front and rear side walls of the box body, each nozzle can spray mud and water mixture while swinging, two water inlet pipes are provided on the front and rear sides of the box body, each water inlet pipe is connected with the corresponding nozzle through seven spiral hoses, and the left cover and the right cover are installed on the upper end of the box body through hinges; The three guide round rods in the first connecting frame connect the triangular arc plate at the left end and the first circular ring frame at the right end into a whole. The first rotating frame is installed on the right side of the first circular ring frame to form a rotating pair. The screw hole slider is installed inside the first rotating frame to form a moving pair. The end connector is positioned by the umbrella nut and the screw hole slider. The cavity inside the damper is filled with magnetorheological fluid, and an electromagnetic coil is arranged inside its side wall. Three through holes are arranged on the piston plate in the middle position of the damping guide rod. The piston plate divides the magnetorheological fluid inside the damper into left and right parts. The resistance of the damper can be determined by the electromagnetic coil. The magnetic field strength is adjusted; the damper is located at the center of the first connecting frame, and the two ends of the damping guide rod are tightly connected to the two ends of the first connecting frame; the first connecting frame is installed on the left side wall of the box body and constitutes a moving pair, and the damper inside it is fixedly connected to the box body; the first connecting frame, the first rotating frame, the screw hole slider, the umbrella nut, the end connector, and the damper constitute a set of resistance guide adjustment devices, and two sets of resistance guide adjustment devices are respectively installed on the left side wall and the right side wall of the box body; two steering gears are fixedly installed on the mounting table, and the two ends of the two steering gears are respectively connected to the corresponding resistance guide adjustment devices; A sliding positioning groove is provided in the middle of the swing plate, and the two ends of the swing plate are rotatably connected with the left sliding positioning block and the right sliding positioning block respectively. The left sliding positioning block and the right sliding positioning block are respectively installed in the rear T-shaped groove and the front T-shaped groove to form a moving pair. The left positioning knob and the right positioning knob respectively lock the positions of the left sliding positioning block and the right sliding positioning block through a threaded structure; the left locking knob and the right locking knob are installed at both ends of the swing plate and lock the tilt angle of the swing plate through a threaded structure; the moving positioning frame and the input motor are respectively installed on the sliding positioning On the upper and lower sides of the positioning slot, the rear ends of the left swing arm and the right swing arm are rotatably installed on the mobile positioning frame, two pulleys are coaxially arranged on the tower pulley, and the tower pulley is tightly connected to the output shaft of the input motor through the tower pulley shaft. The upper left shaft and the upper right shaft are rotatably installed on the front ends of the left swing arm and the right swing arm respectively, and the tower pulley drives the rotation of the upper left shaft and the upper right shaft through two synchronous belts, and the upper ends of the lower left shaft and the lower right shaft are respectively installed inside the upper left shaft and the upper right shaft and can be telescopic, and the lower ends of the lower left shaft and the lower right shaft are respectively connected to the input shafts of the two steering gears.

2. The real-time simulation test system for automobile steering gear according to claim 1 is characterized in that: A plurality of obliquely penetrating drainage holes are provided below the front T-slot and the rear T-slot, the upper end of each drainage hole is connected to the interior of the front T-slot or the rear T-slot, and the lower end of each drainage hole is connected to the interior of the box body. The drainage holes can guide the muddy water in the side T-slot into the box body.

3. The real-time simulation test system for automobile steering gear according to claim 1 is characterized in that: A circular T-shaped groove is arranged inside the right side of the first circular ring frame, and two arc-shaped sliders are arranged at both ends of the left side of the first rotating frame. The two arc-shaped sliders are installed in the circular T-shaped groove inside the first circular ring frame, so that the first rotating frame can rotate freely. A straight T-shaped groove is arranged inside the right side of the first rotating frame.

4. The real-time simulation test system for automobile steering gear according to claim 1 is characterized in that: Two pulleys are coaxially arranged on the tower pulley, and the diameter of the lower pulley is larger than that of the upper pulley.

5. The real-time simulation test system for automobile steering gear according to claim 1 is characterized in that: The input motor, the left swing arm, the right swing arm and related connecting parts are sealed by a sealing cover, and the sealing cover is made of flexible rubber.

6. The real-time simulation test system for automobile steering gear according to claim 1 is characterized in that: The front end of the nozzle is provided with a nozzle, the rear end of the nozzle is provided with a positioning spherical surface, the rear of the positioning spherical surface is provided with a swinging spherical surface, and the rear end of the swinging spherical surface is provided with an interface.

7. The real-time simulation test system for automobile steering gear according to claim 1 is characterized in that: The left cover and the right cover are both provided with transparent glass observation windows.

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