Rotary steering gear loading mechanism

Abstract

The utility model relates to the technical field of steering gears, in particular to a rotary steering gear loading mechanism which comprises a guide rail, a foundation platform slidably connected to the upper end of the guide rail, a hand wheel assembly arranged in the middle of the guide rail and connected with the foundation platform, and a rotary motor and a gear reducer fixedly connected to the left side of the upper end of the foundation platform. The gear reducer is located at the power output end of the rotating motor, the power output end of the rotating motor is connected with the input end of the gear reducer, the output end of the gear reducer is connected with a coupler, the front end of the coupler is fixedly connected with a fixing shaft, two supporting tables are arranged in the middle of the fixing shaft, and a swing arm is arranged between the two supporting tables. The swing arm is fixedly connected with the fixed shaft, the protective ring is embedded in the middle of the swing arm, the connecting shaft is arranged in the middle of the protective ring, the fixed ring is fixedly connected with the middle of the connecting shaft, the torque is directly borne by the rotating motor, other modules except a steering gear loading system do not need to be changed, and the reliability of the system is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a steering gear technology field, concretely is a rotary steering gear loading mechanism. BACKGROUND

[0002] In the vehicle driving simulation test system based on the steering gear loading mechanism, when the steering system based on the real vehicle is tested, the steering gear loading mechanism is used to exert the tension and pressure on the steering gear pull rod to realize the simulation of the steering wheel force feedback. In CN202310466225.5, the linear loading mechanism is used to exert the tension and pressure on the slider and the steering gear pull rod. Because there is a certain distance between the pull rod force action point and the loading mechanism movement axis, the torque is generated on the loading mechanism, so the guide rail structure needs to bear the torque to prevent the actuator structure from being damaged. When the actual vehicle installation is limited, the distance between the steering gear pull rod and the linear loading mechanism is too long, or the pull rod force is too large, which will generate a large torque, and the guide rail and the slider will exceed their strength and be damaged, resulting in low system reliability and durability. SUMMARY

[0003] The utility model aims at providing a rotary steering gear loading mechanism to solve the problems in the above background technology.

[0004] To achieve the above object, the utility model provides the following technical scheme: a rotary steering gear loading mechanism, including the guide rail, the upper end of the guide rail is slidably connected with the base platform, the middle of the guide rail is equipped with the hand wheel group, the hand wheel group is connected with the base platform, the upper end left side of the base platform is fixedly connected with the rotary motor and the gear reducer, the gear reducer is located at the power output end of the rotary motor, the power output end of the rotary motor is connected with the input end of the gear reducer, the output end of the gear reducer is connected with the shaft coupling, the front end of the shaft coupling is fixedly connected with the fixed shaft, the middle of the fixed shaft is equipped with two support tables, the two support tables are equipped with the swing arm, the swing arm is fixedly connected with the fixed shaft, the middle of the swing arm is inlaid with the protective ring, the middle of the protective ring is equipped with the connecting shaft, the middle of the connecting shaft is fixedly connected with the fixed ring, the side end of the swing arm is equipped with the steering gear and the cross pull rod, the cross pull rod is fixedly connected with the steering gear, the front end of the cross pull rod is equipped with the force sensor.

[0005] Preferably, the side end of the swing arm is equipped with the traction plate, the traction plate is U-shaped structure, the two ends of the traction plate are fixedly connected with the two ends of the connecting shaft, the side end of the traction plate is fixedly connected with the ball head, and the ball head is connected with the force sensor.

[0006] Preferably, a plurality of positioning grooves are arranged on the outer wall of the fixed ring, the upper end of the positioning groove is V-shaped structure, and the lower end of the positioning groove is rectangular structure.

[0007] Preferably, the positioning groove is inserted with a positioning block, the positioning block is triangular structure, and the positioning block is inserted in the upper end of the positioning groove.

[0008] Preferably, the lower end of the positioning block is fixedly connected with a limiting plate, the limiting plate is rectangular structure, the limiting plate is inserted in the lower end of the positioning groove, both sides of the limiting plate are provided with clamping grooves, the inner wall of the lower end of the positioning groove is fixedly connected with a clamping piece, the clamping piece is elastic iron piece, and the clamping piece and the clamping groove are clamped with each other.

[0009] Preferably, the upper end of the positioning block is fixedly connected with a fixed plate, the upper end of the fixed plate is inlaid with a ball, and the ball abuts against the inner wall of the fixed ring.

[0010] Preferably, the gear reducer is a multi-stage helical gear reducer.

[0011] Preferably, the gear reducer is a planetary gear reducer.

[0012] Preferably, the front end of the shaft coupling is a plum blossom coupling.

[0013] Compared with the prior art, the beneficial effects of the utility model are that: a rotary loading mechanism is used to replace a linear loading mechanism, and guide rails and sliding blocks and other vulnerable parts are cancelled, a rotary motor directly bears torque, in the vehicle driving simulation test system based on the original invention based on the steering gear loading mechanism, other modules except the steering gear loading system do not need to be changed, the system reliability is greatly improved, and the probability of system downtime caused by part damage is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a schematic view of the connection between the rotary motor and the steering gear.

[0015] Figure 2 It is a schematic view of the connection between the base platform and the guide rail.

[0016] Figure 3 It is a schematic view of the connection between the cross pull rod and the fixed ring.

[0017] Figure 4 It is a schematic view of the connection between the fixed ring and the protection ring.

[0018] In the drawing: 11 rotary motor, 12 gear reducer, 13 shaft coupling, 14 swing arm, 141 connecting shaft, 142 fixed ring, 143 protection ring, 144 fixed plate, 145 positioning block, 146 limiting plate, 147 ball, 148 positioning groove, 149 clamping piece, 15 force sensor, 16 ball head, 17 guide rail, 18 hand wheel group, 21 steering gear, 22 cross pull rod, 31 base platform. DETAILED DESCRIPTION

[0019] In order to deepen the understanding and understanding of the utility model, the technical solutions in the embodiments of the utility model will be clearly and completely described and introduced in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments, and do not limit the embodiments in any form. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0020] Please refer to Figures 1-4 The utility model provides a technical scheme: a rotary steering gear loading mechanism, including guide rail 17, the upper end of guide rail 17 is slidably connected with base platform 31, the middle of guide rail 17 is equipped with hand wheel group 18, hand wheel group 18 is connected with base platform 31, the upper end left side of base platform 31 is fixedly connected with rotary motor 11 and gear reducer 12, gear reducer 12 is located at the power output end of rotary motor 11, the power output end of rotary motor 11 is connected with the input end of gear reducer 12, the output end of gear reducer 12 is connected with shaft coupling 13, the front end of shaft coupling 13 is fixedly connected with fixed shaft, the middle of fixed shaft is equipped with two support tables, the middle of two support tables is equipped with swing arm 14, swing arm 14 is fixedly connected with fixed shaft, the middle of swing arm 14 is embedded with protection ring 143, the middle of protection ring 143 is equipped with connecting shaft 141, the middle of connecting shaft 141 is fixedly connected with fixed ring 142, the side end of swing arm 14 is equipped with steering gear 21 and cross pull rod 22, cross pull rod 22 is fixedly connected with steering gear 21, the front end of cross pull rod 22 is equipped with force sensor 15, rotary motor 11 drives gear reducer 12 to work, gear reducer 12 drives swing arm 14 to rotate, swing arm 14 drives cross pull rod 22 to pull steering gear 21, cancels guide rail and slider and other vulnerable parts, and the torque is directly borne by rotary motor, which ensures the reliability of the system.

[0021] The side end of swing arm 14 is equipped with traction plate, the traction plate is U-shaped structure, the two ends of traction plate are fixedly connected with the two ends of connecting shaft 141, the side end of traction plate is fixedly connected with ball head 16, ball head 16 is connected with force sensor 15, swing arm can drive cross pull rod to move when rotating, ball head 16 is used for connecting pull rod, force sensor and swing arm 14, can further satisfy the change of the distance and the included angle of the output shaft of cross pull rod 22 caused by the change of vehicle body height and the inaccuracy of vehicle installation direction, force sensor 15 is used for measuring the force applied on pull rod, and feedback to control system and further reduce error.

[0022] The outer side wall of the fixed ring 142 is provided with a plurality of positioning grooves 148, the upper end of the positioning groove 148 is a V-shaped structure, the lower end of the positioning groove 148 is a rectangular structure, the positioning block 145 is inserted into the positioning groove 148, the positioning block 145 is a triangular structure, the positioning block 145 is inserted into the upper end of the positioning groove 148, the lower end of the positioning block 145 is fixedly connected with a limiting plate 146, the limiting plate 146 is a rectangular structure, the limiting plate 146 is inserted into the lower end of the positioning groove 148, both sides of the limiting plate 146 are provided with clamping grooves, the inner wall of the lower end of the positioning groove 148 is fixedly connected with a clamping piece 149, the clamping piece 149 is an elastic iron piece, the clamping piece 149 and the clamping groove are clamped with each other, when the swing arm pulls the transverse pull rod, the transverse of the connecting shaft 141 will bear a large transverse force, and long time will cause the connecting shaft 141 to be bent and deformed, thereby affecting the normal work of the steering gear 21, by arranging the fixed plate 144, the positioning block 145 and the ball 147, the friction is reduced when the connecting shaft 141 rotates, and compared with the traditional bearing connection, the connecting mode is convenient for disassembling and replacing the connecting shaft 141, when the fixed plate 144 is deformed, the deformed fixed plate 144 can be replaced, which is more economical and saving.

[0023] The upper end of the positioning block 145 is fixedly connected with a fixed plate 144, the upper end of the fixed plate 144 is inlaid with a ball 147, and the ball 147 abuts against the inner wall of the fixed ring 142.

[0024] The gear reducer 12 is a multi-stage helical gear reducer, compared with the planetary gear reducer, the gear reducer 12 is free of maintenance grease lubrication, has long service life and operates quietly, and has higher output efficiency.

[0025] The gear reducer 12 is a planetary gear reducer, which has large transmission ratio, small volume, light weight and high bearing capacity, through the gear reducer 12, the rotation speed of the output end of the gear reducer 12 is reduced, the rotary servo motor 11 works in an optimal rotation speed range, and the torque of the output end is improved, and then the pull rod force of the output is improved.

[0026] The front end of the shaft coupling 13 is a plum blossom coupling, which transmits the movement and torque of the gear reducer 12 to the swing arm 14, the shaft coupling 13 can compensate the deviation between two shafts due to inaccurate manufacturing and installation, deformation or thermal expansion during work, and can also mitigate impact and absorb vibration.

[0027] Although the embodiments of the utility model have been shown and described, it needs to emphasize: the above description is only the introduction and description of the use mode of the embodiments of the utility model, and is not any form of restriction on the utility model. For ordinary skilled in the art, it can be understood that the embodiments can be changed, modified, replaced and changed in various ways without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A rotary diverter loading mechanism comprising a guide rail (17), characterized in that: The upper end of the guide rail (17) is slidably connected with a base platform (31), the middle of the guide rail (17) is provided with a hand wheel assembly (18), the hand wheel assembly (18) is connected with the base platform (31), the upper end of the left side of the base platform (31) is fixedly connected with a rotary motor (11) and a gear reducer (12), the gear reducer (12) is located at the power output end of the rotary motor (11), the power output end of the rotary motor (11) is connected with the input end of the gear reducer (12), the output end of the gear reducer (12) is connected with a shaft coupling (13), the front end of the shaft coupling (13) is fixedly connected with a fixed shaft, the middle of the fixed shaft is provided with two support tables, a swing arm (14) is arranged between the two support tables, the swing arm (14) is fixedly connected with the fixed shaft, the middle of the swing arm (14) is embedded with a protective ring (143), the middle of the protective ring (143) is provided with a connecting shaft (141), the middle of the connecting shaft (141) is fixedly connected with a fixed ring (142), the side end of the swing arm (14) is provided with a steering gear (21) and a cross pull rod (22), the cross pull rod (22) is fixedly connected with the steering gear (21), the front end of the cross pull rod (22) is provided with a force sensor (15).

2. A rotary diverter loading mechanism according to claim 1, wherein: The side end of the swing arm (14) is provided with a traction plate, the traction plate is in U-shaped structure, the two ends of the traction plate are fixedly connected with the two ends of the connecting shaft (141), the side end of the traction plate is fixedly connected with a ball head (16), and the ball head (16) is connected with the force sensor (15).

3. A rotary diverter loading mechanism according to claim 1, wherein: A plurality of positioning grooves (148) are arranged on the outer side wall of the fixed ring (142), the upper end of the positioning groove (148) is in V-shaped structure, and the lower end of the positioning groove (148) is in rectangular structure.

4. A rotary diverter loading mechanism according to claim 3, wherein: A positioning block (145) is inserted into the positioning groove (148), the positioning block (145) is in triangular structure, and the positioning block (145) is inserted into the upper end of the positioning groove (148).

5. A rotary diverter loading mechanism according to claim 4, wherein: The lower end of the positioning block (145) is fixedly connected with a limiting plate (146), the limiting plate (146) is in rectangular structure, the limiting plate (146) is inserted into the lower end of the positioning groove (148), the two sides of the limiting plate (146) are provided with clamping grooves, the inner wall of the lower end of the positioning groove (148) is fixedly connected with a clamping piece (149), the clamping piece (149) is an elastic iron piece, and the clamping piece (149) and the clamping groove are clamped with each other.

6. A rotary diverter loading mechanism according to claim 4, wherein: The upper end of the positioning block (145) is fixedly connected with a fixed plate (144), the upper end of the fixed plate (144) is embedded with a ball (147), and the ball (147) abuts against the inner wall of the fixed ring (142).

7. A rotary diverter loading mechanism as claimed in claim 1, wherein: The gear reducer (12) is a multi-stage helical gear reducer.

8. A rotary diverter loading mechanism according to claim 1, wherein: The gear reducer (12) is a planetary gear reducer.

9. A rotary diverter loading mechanism according to claim 1, wherein: The front end of the shaft coupling (13) is a plum blossom coupling.

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