Steering gear sealing structure

Abstract

The utility model discloses a steering gear sealing structure which comprises a steering gear shell, a steering gear and a steering rack are arranged in the steering gear shell, one end of the steering rack is fixedly connected with a first steering shaft, the other end of the steering rack is fixedly connected with a second steering shaft, a first sealing piece is arranged at one end of the steering gear shell, and a second sealing piece is arranged at the other end of the steering gear shell. A first sealing piece is arranged at one end of the steering gear shell and covers the first steering shaft, a second sealing piece is arranged at the other end of the steering gear shell and covers the second steering shaft, and the first sealing piece and the second sealing piece each comprise an elastic sealing cover. The sealing pieces are additionally arranged at the two ends of the steering gear shell, sealing of the connecting position of the steering shaft and the steering gear shell is enhanced through the sealing pieces, and when the sealing sleeve fails in sealing due to abrasion, sealing of the connecting position of the steering shaft and the steering gear shell is achieved through the sealing pieces at the two ends. The elastic sealing cover can move along with the steering shaft and generate corresponding elastic deformation.

Description

Technical Field

[0001] The utility model relates to the technical field of steering gear sealing, in particular to a steering gear sealing structure. Background Art

[0002] A steering gear is a powered mechanical device that allows a manned or unmanned vehicle to randomly change its path and direction during operation. Also known as a steering gear or steering machine, it is the most important component in the steering system. Its function is to increase the force transmitted from the steering wheel to the steering transmission mechanism and change the direction of this force.

[0003] The sealing effect of the steering gear will directly affect the performance of the steering gear. Sealing failure will cause steering jamming or steering failure. The existing steering gear adopts a single sealing sleeve structure. When the sealing performance of the sealing sleeve decreases due to wear, the sealing of the steering gear cannot be effectively guaranteed. Utility Model Content

[0004] The purpose of the present utility model is to provide a steering gear sealing structure to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a steering gear sealing structure, comprising a steering gear housing, wherein the steering gear housing has a built-in steering gear and a steering rack, one end of the steering rack is fixedly connected to a first steering shaft, and the other end of the steering rack is fixedly connected to a second steering shaft, a first seal is provided at one end of the steering gear housing, and the first seal cover is provided on the outside of the first steering shaft, a second seal is provided at the other end of the steering gear housing, and the second seal cover is provided on the outside of the second steering shaft, and the first seal and the second seal both include elastic sealing covers.

[0006] Wherein, the first sealing member and the second sealing member both include a first fixing ring and a second fixing ring.

[0007] Wherein, one end of the elastic sealing cover is fixedly connected to the first fixing ring, and the other end of the elastic sealing cover is fixedly connected to the second fixing ring.

[0008] The first fixing ring of the first sealing member is fixedly arranged on one side end surface of the steering gear housing, and the second fixing ring of the first sealing member is fixedly arranged on the first steering shaft.

[0009] The first fixing ring of the second sealing member is fixedly arranged on the other end surface of the steering gear housing, and the second fixing ring of the second sealing member is fixedly arranged on the second steering shaft.

[0010] Wherein, a sealing sleeve is provided at the connection between the first steering shaft and the steering gear housing, and a sealing sleeve is provided at the connection between the second steering shaft and the steering gear housing.

[0011] Wherein, the steering gear includes a connecting shaft, and the steering gear is meshed with the steering rack for transmission.

[0012] Wherein, one end of the first steering shaft is fixedly connected to a first connector.

[0013] Wherein, one end of the second steering shaft is fixedly connected to a second connector.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. The utility model adds sealing members at both ends of the steering gear housing to strengthen the seal at the connection between the steering shaft and the steering gear housing through the sealing members. When the sealing sleeve fails to seal due to wear, the sealing members at both ends can achieve the sealing of the connection between the steering shaft and the steering gear housing.

[0016] 2. The elastic sealing cover of the utility model can freely expand and contract and rebound under the action of external force. The elastic sealing cover can move with the steering shaft and undergo corresponding elastic deformation. The elastic sealing cover can always cover the connection between the steering shaft and the steering gear housing for sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the first sealing member and the second sealing member of the utility model from a side view;

[0019] Figure 3 This is another side view structural diagram of the first sealing member and the second sealing member of the present invention;

[0020] Figure 4 for Figure 1 A partial enlarged view of area A in the middle;

[0021] Figure 5 This is a schematic diagram of the connection between the steering gear and the steering rack of the utility model.

[0022] In the figure: 1. Steering gear housing; 2. Steering gear; 3. Steering rack; 4. First steering shaft; 5. Second steering shaft; 6. First seal; 7. Second seal; 8. Sealing sleeve; 21. Connecting shaft; 41. First connector; 51. Second connector; 71. First fixing ring; 72. Second fixing ring; 73. Elastic sealing cover. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1-5 The utility model provides a technical solution: a steering gear sealing structure, including a steering gear housing 1, the steering gear housing 1 has a steering gear 2 and a steering rack 3 built in, one end of the steering rack 3 is fixedly connected to the first steering shaft 4, and the other end of the steering rack 3 is fixedly connected to the second steering shaft 5, one end of the steering gear housing 1 is provided with a first seal 6, the first seal 6 is covered on the outside of the first steering shaft 4, the other end of the steering gear housing 1 is provided with a second seal 7, the second seal 7 is covered on the outside of the second steering shaft 5, and the first seal 6 and the second seal 7 both include elastic sealing covers 73.

[0025] A first seal 6 is added to one end of the steering gear housing 1 to strengthen the seal at the connection between the first steering shaft 4 and the steering gear housing 1. A second seal 7 is added to the other end of the steering gear housing 1 to strengthen the seal at the connection between the second steering shaft 5 and the steering gear housing 1.

[0026] The elastic sealing cover 73 of the first sealing member 6 is provided at the connection between the first steering shaft 4 and the steering gear housing 1 to achieve sealing. The elastic sealing cover 73 of the second sealing member 7 is provided at the connection between the second steering shaft 5 and the steering gear housing 1 to achieve sealing.

[0027] The elastic sealing cover 73 of the first seal 6 and the elastic sealing cover 73 of the second seal 7 both have a certain elasticity and can freely expand and contract and rebound under the action of external force. When the first steering shaft 4 moves under the drive of external force, the elastic sealing cover 73 of the first seal 6 follows the movement of the first steering shaft 4 and undergoes corresponding elastic deformation. When the second steering shaft 5 moves under the drive of external force, the elastic sealing cover 73 of the second seal 7 follows the movement of the second steering shaft 5 and undergoes corresponding elastic deformation. The elastic sealing cover 73 can always cover the connection between the steering shaft and the steering gear housing 1 for sealing.

[0028] The first sealing member 6 and the second sealing member 7 both include a first fixing ring 71 and a second fixing ring 72 .

[0029] One end of the elastic sealing cover 73 is fixedly connected to the first fixing ring 71 , and the other end of the elastic sealing cover 73 is fixedly connected to the second fixing ring 72 .

[0030] The first fixing ring 71 of the first sealing member 6 is fixedly arranged on one side end surface of the steering gear housing 1 , and the second fixing ring 72 of the first sealing member 6 is fixedly arranged on the first steering shaft 4 .

[0031] The first fixing ring 71 of the first seal 6 is installed and fixed on one side end face of the steering gear housing 1 to remain stable. The second fixing ring 72 of the first seal 6 moves with the first steering shaft 4. When the first steering shaft 4 moves, the second fixing ring 72 of the first seal 6 is driven. The elastic sealing cover 73 of the first seal 6 is driven by the second fixing ring 72 to undergo corresponding elastic deformation, adaptively expanding or rebounding.

[0032] The first fixing ring 71 of the second sealing member 7 is fixedly arranged on the other end surface of the steering gear housing 1 , and the second fixing ring 72 of the second sealing member 7 is fixedly arranged on the second steering shaft 5 .

[0033] The first fixing ring 71 of the second seal 7 is installed and fixed on the other side end face of the steering gear housing 1 to remain stable. The second fixing ring 72 of the second seal 7 moves with the second steering shaft 5. When the second steering shaft 5 moves, the second fixing ring 72 of the second seal 7 is driven. The elastic sealing cover 73 of the second seal 7 is driven by the second fixing ring 72 to undergo corresponding elastic deformation, adaptively expanding or rebounding.

[0034] Among them, a sealing sleeve 8 is provided at the connection between the first steering shaft 4 and the steering gear housing 1, and a sealing sleeve 8 is provided at the connection between the second steering shaft 5 and the steering gear housing 1. The sealing sleeve 8 is used to achieve preliminary sealing at the connection between the first steering shaft 4 and the steering gear housing 1, and the sealing sleeve 8 is used to achieve preliminary sealing at the connection between the second steering shaft 5 and the steering gear housing 1.

[0035] When the sealing sleeve 8 fails to seal due to wear, the first sealing member 6 and the second sealing member 7 are used to seal the connection between the steering shaft and the steering gear housing 1 .

[0036] The steering gear 2 includes a connecting shaft 21 , and the steering gear 2 is meshed with the steering rack 3 for transmission. When the steering gear 2 rotates, the steering rack 3 is driven to move, converting the rotational motion of the steering gear 2 into the linear motion of the steering rack 3 .

[0037] One end of the first steering shaft 4 is fixedly connected to a first connector 41 , which is connected to the pull rod structure through the first connector 41 , and is further connected to the tire structure through the pull rod structure.

[0038] One end of the second steering shaft 5 is fixedly connected to a second connector 51 , which is connected to the pull rod structure through the second connector 51 , and is further connected to the tire structure through the pull rod structure.

[0039] Working principle: When power is applied to the connecting shaft 21 of the steering gear 2, the steering gear 2 rotates, and the steering rack 3 is driven to perform linear motion through the meshing transmission between the teeth. The steering rack 3 drives the first steering shaft 4 and the second steering shaft 5 at both ends to perform linear motion synchronously to perform steering. A first seal 6 is added at one end of the steering gear housing 1, and the first seal 6 strengthens the seal at the connection between the first steering shaft 4 and the steering gear housing 1. A second seal 7 is added at the other end of the steering gear housing 1, and the second seal 7 strengthens the seal at the connection between the second steering shaft 5 and the steering gear housing 1. When the first steering shaft 4 moves under the drive of external force, the elastic sealing cover 73 of the first seal 6 follows the movement of the first steering shaft 4 and undergoes corresponding elastic deformation. When the second steering shaft 5 moves under the drive of external force, the elastic sealing cover 73 of the second seal 7 follows the movement of the second steering shaft 5 and undergoes corresponding elastic deformation. When the sealing sleeve 8 fails to seal due to wear, the first seal 6 and the second seal 7 realize the sealing of the connection between the steering shaft and the steering gear housing 1.

[0040] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A steering gear sealing structure, comprising a steering gear housing (1), characterized in that: The steering gear housing (1) is provided with a steering gear (2) and a steering rack (3) built therein; one end of the steering rack (3) is fixedly connected to a first steering shaft (4); the other end of the steering rack (3) is fixedly connected to a second steering shaft (5); one end of the steering gear housing (1) is provided with a first sealing member (6); the first sealing member (6) is covered on the outside of the first steering shaft (4); the other end of the steering gear housing (1) is provided with a second sealing member (7); the second sealing member (7) is covered on the outside of the second steering shaft (5); the first sealing member (6) and the second sealing member (7) both include elastic sealing covers (73).

2. A steering gear sealing structure according to claim 1, characterized in that: The first sealing member (6) and the second sealing member (7) both comprise a first fixing ring (71) and a second fixing ring (72).

3. A steering gear sealing structure according to claim 2, characterized in that: One end of the elastic sealing cover (73) is fixedly connected to the first fixing ring (71), and the other end of the elastic sealing cover (73) is fixedly connected to the second fixing ring (72).

4. A steering gear sealing structure according to claim 3, characterized in that: The first fixing ring (71) of the first sealing member (6) is fixedly arranged on one side end surface of the steering gear housing (1), and the second fixing ring (72) of the first sealing member (6) is fixedly arranged on the first steering shaft (4).

5. The steering gear sealing structure according to claim 4, characterized in that: The first fixing ring (71) of the second sealing member (7) is fixedly arranged on the other end face of the steering gear housing (1), and the second fixing ring (72) of the second sealing member (7) is fixedly arranged on the second steering shaft (5).

6. The steering gear sealing structure according to claim 1, characterized in that: A sealing sleeve (8) is provided at the connection between the first steering shaft (4) and the steering gear housing (1), and a sealing sleeve (8) is provided at the connection between the second steering shaft (5) and the steering gear housing (1).

7. The steering gear sealing structure according to claim 1, characterized in that: The steering gear (2) includes a connecting shaft (21), and the steering gear (2) is meshed with the steering rack (3) for transmission.

8. The steering gear sealing structure according to claim 1, characterized in that: One end of the first steering shaft (4) is fixedly connected to a first connector (41).

9. The steering gear sealing structure according to claim 1, characterized in that: One end of the second steering shaft (5) is fixedly connected to the second connector (51).

Images