阅读说明：本技术 一种高效率的大扭矩机械转向器装置 (High-efficiency large-torque mechanical steering gear device ) 是由 朱兴旺 张宝义 陈文洪 毛建兵 于 2019-08-20 设计创作，主要内容包括：本发明公开了一种高效率的大扭矩机械转向器装置,涉及机械转向器技术领域。包括壳体,所述壳体内靠近上侧设置有转向螺母,所述转向螺母的左侧面与壳体之间固定安装有第一向心轴承,所述转向螺母内从右侧面活动安装有输入轴,所述输入轴上固定安装有第二向心轴承,且第二向心轴承与转向螺母的右侧面相抵触,所述输入轴与转向螺母之间设置有钢球,所述转向螺母的外表面与壳体内壁之间设置有支撑轴承。本发明通过支撑轴承与壳体壁配合,和限位卡环限制位置,提高输出扭矩,改善耐久性能,提高方向机使用寿命,再通过第一滚针轴承与第二滚针轴承的配合,方向机的正效率大大提高,使方向机的回正性能更加的优异。(The invention discloses a high-efficiency large-torque mechanical steering gear device, and relates to the technical field of mechanical steering gears. The shell is provided with a steering nut close to the upper side in the shell, a first radial bearing is fixedly mounted between the left side face of the steering nut and the shell, an input shaft is movably mounted in the steering nut from the right side face, a second radial bearing is fixedly mounted on the input shaft and is inconsistent with the right side face of the steering nut, a steel ball is arranged between the input shaft and the steering nut, and a supporting bearing is arranged between the outer surface of the steering nut and the inner wall of the shell. According to the invention, the support bearing is matched with the shell wall, and the position is limited by the limit snap ring, so that the output torque is improved, the durability is improved, the service life of the steering gear is prolonged, and the positive efficiency of the steering gear is greatly improved by matching the first needle bearing with the second needle bearing, so that the aligning performance of the steering gear is more excellent.)

1. A high efficiency, high torque mechanical steering gear device comprising a housing (1), characterized by: a steering nut (2) is arranged in the shell (1) close to the upside, a first radial bearing (3) is fixedly arranged between the left side face of the steering nut (2) and the shell (1), an input shaft (4) is movably arranged in the steering nut (2) from the right side face, a second radial bearing (5) is fixedly arranged on the input shaft (4), the second radial bearing (5) is in contact with the right side face of the steering nut (2), a steel ball (6) is arranged between the input shaft (4) and the steering nut (2), a support bearing (7) is arranged between the outer surface of the steering nut (2) and the inner wall of the shell (1), a limit snap ring (8) is arranged on the right side face of the support bearing (7), a right end cover (9) is arranged on the right side face of the limit snap ring (8), and the right end cover (9) is movably sleeved outside the input shaft (4), the right end cover (9) is locked and fixed with the right side surface of the shell (1) through a first locking nut (10), and a first oil seal (11) is fixedly arranged on the input shaft (4) and positioned on the right side of the first locking nut (10);

a rocker arm shaft (12) is arranged in the shell (1) and close to the lower side, a sector gear (13) is fixedly mounted on the rocker arm shaft (12), the sector gear (13) is meshed with the lower surface of the steering nut (2), a first needle bearing (14) is fixedly mounted on the rocker arm shaft (12) close to the front side, and a second oil seal (15) is arranged on the front side, located on the first needle bearing (14), of the rocker arm shaft (12).

2. A high efficiency, high torque mechanical steering gear according to claim 1 wherein a second needle bearing (16) is fixedly mounted on the rocker shaft (12) above the sector gear (13), a rear end cap (17) is provided on the rear side of the second needle bearing (16), and the rear end cap (17) is fixedly mounted on the rear side of the housing (1).

3. A high efficiency, high torque mechanical steering gear arrangement as set forth in claim 2, wherein: the rear end cover (17) is fixedly connected with the shell (1) through a first locking bolt (18), and the first locking bolt (18) is arranged on the rear end cover (17) in a rectangular shape.

4. A high efficiency, high torque mechanical steering gear arrangement as set forth in claim 1 wherein: and a gasket (19) is arranged between the front side surface of the rear end cover (17) and the rear side surface of the shell (1).

5. A high efficiency, high torque mechanical steering gear arrangement as set forth in claim 1 wherein: the left side face of the steering nut (2) is provided with a conduit clamp (20), a conduit (21) is arranged in the conduit clamp (20), and second locking bolts (22) are arranged on the left side and the right side of the conduit clamp (20).

6. A high efficiency, high torque mechanical steering gear arrangement as set forth in claim 1 wherein: the rear side surface of the rocker arm shaft (12) is fixedly provided with a bolt rod (23), the bolt rod (23) is arranged on the rear end cover (17) in a threaded mode, and a second locking nut (24) is arranged on the bolt rod (23).

7. A high efficiency, high torque mechanical steering gear arrangement as set forth in claim 1 wherein: and the second oil seal (15) is fixedly arranged at the position, close to the lower side, of the front side surface of the shell (1).

Technical Field

The invention relates to the technical field of mechanical steering gears, in particular to a high-efficiency large-torque mechanical steering gear device.

Background

With the development of the automobile industry, particularly the support of the country on electric automobiles, many original products face elimination or product requirement upgrading, hydraulic steering machines are mainly used as steering machines for steering devices, the automobiles need to provide power, partial kinetic energy is lost, 90% of passenger vehicles are changed into electric steering at present, due to the structural characteristics of commercial vehicles, most of the steering machines are hydraulic steering machines, electric circulating ball steering devices are developed and designed for being suitable for the commercial vehicles, the electric circulating ball steering devices are deeply developed on the basis of mechanical circulating ball steering devices, mature C-EPS technology is utilized, an improved C-EPS speed reducing mechanism and the mechanical circulating ball steering devices are combined ingeniously, the kinetic energy provided by a motor is utilized to replace an engine to provide the kinetic energy, energy conservation and environmental protection are achieved, and conditions are provided for realizing intellectualization of the automobiles.

The development of the electric recirculating ball steering gear, the mechanical recirculating ball steering gear of the original structure is not suitable, the controller can provide output torque through the motor according to the actual needs of the automobile, the mechanical steering gear must have enough strength to meet, but when the input torque of the steering gear is larger, the reaction force of the output shaft causes the bending deformation of the input shaft, the arc contacted with the steel ball changes, the stressed angle and the R size also change, and the arc surface of the input shaft is caused to be pitting and stuck, therefore, the high-efficiency large-torque mechanical steering gear device is provided to solve the problems.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a high-efficiency large-torque mechanical steering gear device which has the advantages of improving output torque, durability and service life of a steering gear, greatly improving the positive efficiency of the steering gear, ensuring that the return performance of the steering gear is more excellent and the like, and solves the problems that the arc surface of an input shaft is corroded by pitting and is blocked due to the fact that the arc surface of the input shaft is deformed by bending, the arc contacted with a steel ball is changed, and the stress angle and the R size are also changed.

(II) technical scheme

In order to achieve the purposes of improving the output torque, improving the durability, prolonging the service life of the steering gear box, greatly improving the positive efficiency of the steering gear box and enabling the aligning performance of the steering gear box to be more excellent, the invention provides the following technical scheme: a high-efficiency large-torque mechanical steering gear device comprises a shell, a steering nut is arranged in the shell close to the upper side, a first radial bearing is fixedly arranged between the left side surface of the steering nut and the shell, an input shaft is movably arranged in the steering nut from the right side surface, a second radial bearing is fixedly arranged on the input shaft, the second bearing is abutted against the right side surface of the steering nut, a steel ball is arranged between the input shaft and the steering nut, a supporting bearing is arranged between the outer surface of the steering nut and the inner wall of the shell, a limiting snap ring is arranged on the right side surface of the supporting bearing, the right side surface of the limit snap ring is provided with a right end cover which is movably sleeved outside the input shaft, the right end cover is locked and fixed with the right side surface of the shell through a first locking nut, and a first oil seal is fixedly arranged on the input shaft and positioned on the right side of the first locking nut;

a rocker arm shaft is arranged in the shell and close to the lower side, a sector gear is fixedly mounted on the rocker arm shaft and is meshed with the lower surface of the steering nut, a first needle bearing is fixedly mounted on the rocker arm shaft and close to the front side, and a second oil seal is arranged on the rocker arm shaft and located on the front side of the first needle bearing.

As a preferable technical solution of the present invention, a second needle bearing is fixedly mounted on the rocker arm shaft above the sector gear, a rear end cap is disposed on a rear side surface of the second needle bearing, and the rear end cap is fixedly mounted on a rear side surface of the housing.

As a preferred technical solution of the present invention, the rear end cover is fixedly connected to the housing through a first locking bolt, and the first locking bolt is disposed on the rear end cover in a rectangular shape.

As a preferable technical solution of the present invention, a gasket is disposed between the front side surface of the rear end cap and the rear side surface of the housing.

As a preferable technical solution of the present invention, a conduit clamp is disposed on a left side surface of the steering nut, a conduit is disposed in the conduit clamp, and second locking bolts are disposed on left and right sides of the conduit clamp.

As a preferable technical scheme of the invention, a bolt rod is fixedly arranged on the rear side surface of the rocker arm shaft, the bolt rod is arranged on the rear end cover in a threaded manner, and a second locking nut is arranged on the bolt rod.

In a preferred embodiment of the present invention, the second oil seal is fixedly mounted on a lower side of a front side surface of the housing.

(III) advantageous effects

Compared with the prior art, the invention provides a high-efficiency large-torque mechanical steering gear device, which has the following beneficial effects:

1. the efficient large-torque mechanical steering gear device has the advantages that a gap is reserved between the steering nut and the supporting bearing, when the input torque is small, the input shaft is not deformed, the steering nut is not in contact with the supporting bearing, the stress condition is the same as that of the original structure, but when the input torque is large, the input shaft begins to deform, the steering nut and the supporting bearing begin to contact, the supporting bearing provides a supporting force to overcome the deformation of the input shaft, the input shaft can normally operate, the steering nut and the supporting bearing are in point contact, the generated resistance is far smaller than that generated by the deformation of the input shaft, the supporting bearing is matched with a shell wall, the position is limited through the limiting snap ring, the output torque is improved, the durability is improved, and the service life of the steering gear is prolonged.

2. According to the high-efficiency large-torque mechanical steering gear device, the rocker shaft is arranged, the first needle bearing and the second needle bearing are changed from the bushings, and the steering nut and the support bearing are added, so that the positive efficiency of the steering gear is greatly improved, and the aligning performance of the steering gear is more excellent.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

In the figure: 1. a housing; 2. a steering nut; 3. a first radial bearing; 4. an input shaft; 5. a second radial bearing; 6. a steel ball; 7. a support bearing; 8. a limit snap ring; 9. a right end cap; 10. a first lock nut; 11. a first oil seal; 12. a rocker shaft; 13. a sector gear; 14. a first needle bearing; 15. a second oil seal; 16. a second needle bearing; 17. a rear end cap; 18. locking the bolt; 19. a gasket; 20. a catheter clamp; 21. a conduit; 22. a second locking bolt; 23. a bolt shank; 24. and a second lock nut.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, a high-efficiency large-torque mechanical steering gear device comprises a housing 1, a steering nut 2 is arranged in the housing 1 near the upper side, a first radial bearing 3 is fixedly arranged between the left side surface of the steering nut 2 and the housing 1, an input shaft 4 is movably arranged in the steering nut 2 from the right side surface, a second radial bearing 5 is fixedly arranged on the input shaft 4, the second radial bearing 5 is abutted against the right side surface of the steering nut 2, a steel ball 6 is arranged between the input shaft 4 and the steering nut 2, a support bearing 7 is arranged between the outer surface of the steering nut 2 and the inner wall of the housing 1, a limit snap ring 8 is arranged on the right side surface of the support bearing 7, a right end cover 9 is arranged on the right side surface of the limit snap ring 8, the right end cover 9 is movably sleeved outside the input shaft 4, the right end cover 9 is locked and fixed with the right side surface of the housing 1 through a first lock nut 10, a first oil seal 11 is fixedly mounted on the input shaft 4 and located on the right side of the first locking nut 10, a rocker arm shaft 12 is arranged in the shell 1 and close to the lower side, a sector gear 13 is fixedly mounted on the rocker arm shaft 12, the sector gear 13 is meshed with the lower surface of the steering nut 2, a first needle bearing 14 is fixedly mounted on the rocker arm shaft 12 and close to the front side, a second oil seal 15 is arranged on the front side of the first needle bearing 14 of the rocker arm shaft 12, the second oil seal 15 is fixedly mounted on the front side face of the shell 1 and close to the lower side, a second needle bearing 16 is fixedly mounted on the rocker arm shaft 12 and located on the upper side of the sector gear 13, a rear end cover 17 is arranged on the rear side face of the second needle bearing 16, and the rear end cover 17 is fixedly mounted on the rear.

As a specific optimized solution of this embodiment, the rear end cover 17 is fixedly connected to the housing 1 through a first locking bolt 18, and the first locking bolt 18 is disposed on the rear end cover 17 in a rectangular shape.

In this embodiment, the first locking bolt 18 facilitates the installation of the rear end cap 17 on the housing 1, so that the rear end cap 17 is installed more firmly.

As a specific optimization scheme of the embodiment, a gasket 19 is arranged between the front side surface of the rear end cover 17 and the rear side surface of the housing 1.

In this embodiment, the gasket 19 prevents leakage of oil in the housing 1, and the sealing performance is better.

As a specific optimization scheme of the embodiment, a conduit clamp 20 is arranged on the left side surface of the steering nut 2, a conduit 21 is arranged in the conduit clamp 20, and second locking bolts 22 are arranged on the left side and the right side of the conduit clamp 20.

In this embodiment, the pipe clamp 20 is convenient for fix the pipe 21, and the pipe 21 is convenient for carry fluid, and is more convenient to use.

As a specific optimization scheme of the embodiment, a bolt rod 23 is fixedly mounted on the rear side surface of the rocker arm shaft 12, the bolt rod 23 is threadedly mounted on the rear end cover 17, and a second lock nut 24 is arranged on the bolt rod 23.

In this embodiment, bolt shank 23 cooperates with second locking nut 24 to facilitate adjustment of rocker shaft 12 by a worker.

The working principle and the using process of the invention are as follows: when in use, a gap is arranged between the steering nut 2 and the support bearing 7, when the input torque is smaller, the input shaft 4 is not deformed, the steering nut 2 is not contacted with the support bearing 7, the stress condition is the same as the original structure, but when the input torque is larger, the input shaft 4 begins to deform, the steering nut 2 is contacted with the support bearing 7, the support bearing 7 provides a support force to overcome the deformation of the input shaft, so that the input shaft 4 can normally operate, the steering nut 2 is in point contact with the support bearing 7, the generated resistance is far smaller than the resistance generated by the deformation of the input shaft 4, the support bearing 7 is matched with the wall of the shell 1, the position of the support bearing 7 is limited by the limit snap ring 8, the output torque is improved, the durability is improved, the service life of the steering gear is prolonged, the rocker arm shaft 12 is changed into a first needle bearing 14 and a second needle bearing 16 by bushings, and the steering nut 2 and the support, the positive efficiency of the steering gear box is greatly improved, and the aligning performance of the steering gear box is more excellent.

In summary, the high-efficiency large-torque mechanical steering gear device improves the output torque, improves the durability and prolongs the service life of the steering gear by matching the support bearing 7 with the wall of the shell 1 and limiting the position by the limiting snap ring, and the positive efficiency of the steering gear is greatly improved by matching the first needle bearing 14 with the second needle bearing 16, so that the aligning performance of the steering gear is more excellent.

It should be noted that, in this document, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.