CN210793319U - Self-flowing steering gear antifouling device and steering gear thereof - Google Patents

Abstract

The utility model discloses an antifouling device of gravity flow steering gear and steering gear thereof, including the steering gear casing, the outer wall of driving gear and the lower bearing that is located the upper bearing about the equal interference fit in both ends have the oil blanket, the inner chamber front side bottom of steering gear casing and the outside that is located the driving gear are provided with the blowdown mechanism that flows automatically, both ends respectively with the rear side of rack guide sleeve and adjusting bolt's outer wall front side looks joint around the compensating spring, both ends all are provided with sealed the pad around the compensating spring, the sealed fibre cover has been cup jointed to the outside of compensating spring. This antifouling device of gravity flow steering gear and steering gear thereof can discharge the lubricating oil of the inside seepage of steering gear, avoids outside dust contact to form the filth and hinders gear and bearing normal work to can protect the inside compensating spring of steering gear, avoid the filth to enter into the spring hole, influence spring pretension function, improve navigating mate driving safety nature.

Description

Self-flowing steering gear antifouling device and steering gear thereof

Technical Field

The utility model relates to a in power steering gear structural design technical field, specifically be an antifouling device of gravity flow steering gear and steering gear thereof.

Background

The steering gear is a mechanical device which is driven by people or unmanned and has a power source, and randomly changes the running route and direction in the running process, is commonly called a steering gear and a steering gear, and is the most important part in a steering system. The steering gear has the effects of increasing the force transmitted by a steering wheel to a steering transmission mechanism and changing the transmission direction of the force, the current steering gears are divided into Hydraulic Pressure (HPS) (P-HPS), electric steering gears, electric pipe columns (C-EPS), worm gear type (P-EPS), double gear type (DP-EPS) and rack screw rod type (RP-EPS) on the market, the current rack and pinion steering gear is provided with a sealing cover at the top end of the steering gear to perform dustproof and antifouling protection on an internal rack and pinion, the protection is too simple, after long-time use, a sealing strip and an oil seal in the sealing cover can be hardened to cause a gap, lubricating oil in an internal gear and a bearing of the steering gear leaks and accumulates in the steering gear, so that external dust enters the steering gear and is attached to redundant lubricating oil in the gear and the bearing, the formation filth hinders gear and bearing normal work, and then increases steering gear transmission resistance, leads to faults such as steering gear card pause to current steering gear is but less to inside compensation spring's protection, uses for a long time and makes outside filth enter into to the spring hole easily, influences the spring pretension function, leads to rack and pinion can't keep the meshing, influences navigating mate driving safety nature.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an antifouling device of gravity flow steering gear and steering gear thereof to solve the problem that provides among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: an upper bearing and a lower bearing are respectively embedded at the upper end and the lower end of the front side of an inner cavity of the steering gear shell, the outer rings of the upper bearing and the lower bearing are respectively fixedly connected with the upper end and the lower end of the inner wall of the front side of the steering gear shell, the inner rings of the upper bearing and the lower bearing are in interference fit with a driving gear along the vertical direction, oil seal pads are respectively in interference fit with the upper end and the lower end of the outer wall of the driving gear and positioned on the lower bearing of the upper bearing, a seal cover is clamped at the top end of the outer wall of the steering gear shell, a nut cover is connected with the top end of the inner cavity of the steering gear shell through screws, the top end of the driving gear sequentially penetrates through the nut cover and the seal cover, an oil seal is embedded in the upper surface of the nut cover, the inner cavity of the oil seal is sleeved with the top end of the outer wall of the driving gear, and a self-, a steering rack meshed with the driving gear is inserted in the left-right direction at the rear side of the inner cavity of the steering gear shell, a dustproof pad is arranged on the right side of the steering gear shell and positioned on the outer side of the steering rack, a rack guide sleeve is sleeved on the rear side of the steering rack, a side cover is arranged at the rear side of the inner cavity of the steering gear shell, a locking nut is arranged at the central position of the rear side of the side cover, an adjusting bolt is screwed in the inner cavity of the locking nut, the front side of the outer wall of the adjusting bolt extends out of the front side of the side cover and is contacted with the rear side of the rack guide sleeve, the front side of the outer wall of the adjusting bolt is sleeved with a compensating spring, the front end and the rear end of the compensating spring are respectively clamped with the rear side of the rack guide sleeve and the front side of the outer wall of the adjusting bolt, the front end and the rear end of the compensation spring are respectively provided with a sealing gasket, and a sealing fiber sleeve is sleeved outside the compensation spring.

Preferably, the self-flowing sewage discharging mechanism comprises a flow guide pipe, a sewage discharging pipe, an annular drainage groove, a sealing cover and a cylindrical block;

the steering gear comprises a steering gear shell, and is characterized in that four guide pipes are embedded into the bottom end of an inner cavity of the steering gear shell and the outer side of the top end of a lower bearing along the circumferential direction, four annular drainage grooves are formed in the bottom end of the inner cavity of the steering gear shell, the bottom end of each guide pipe is provided with a drainage pipe communicated with the inner cavity of the corresponding guide pipe, the outer side of the outer wall of each drainage pipe extends out of the steering gear shell and is in threaded connection with a sealing cover, a cylindrical block is arranged in the inner cavity of the sealing cover, and the cylindrical block is connected with the outer.

Preferably, four guide pipes are arranged on the outer side of the bottom end of the driving gear at intervals of 90 degrees clockwise.

Preferably, the included angle between the sewage draining pipe and the flow guiding pipe is 120 degrees.

Preferably, the outer side of the top end of the inner cavity of the annular drainage groove is inclined downwards towards the top end of the inner cavity of the drainage tube from outside to inside.

Compared with the prior art, the beneficial effects of the utility model are that: the self-flow steering gear antifouling device and the steering gear thereof can ensure that the sealing fiber sleeve on the outer side of the outer wall of the self-flow steering gear can synchronously generate elastic deformation through the elastic deformation of the compensating spring, further keep the protection on the outer side of the compensating spring, ensure the protection on the sealing gasket under the matching of the sealing gaskets on the front side and the rear side of the compensating spring, further prevent external dirt from entering a spring hole of the compensating spring after long-time use, prevent the steering rack from bringing a large amount of external dust into the steering gear shell in the linear motion process through the dustproof gasket on the right side of the steering gear shell, ensure that the lubricating oil in the upper bearing and the lower bearing can not leak to the outside through the oil sealing gaskets on the upper side and the lower side of the upper bearing and the lower bearing, and leak the lubricating oil into the annular drainage groove through the meshing rotation of the steering rack and the driving gear and enter the outer side of the inner, and then discharge lubricating oil to can discharge the lubricating oil of the inside seepage of steering gear, avoid outside dust contact to form the filth and hinder gear and bearing normal work, and can protect the inside compensating spring of steering gear, avoid the filth to enter into the spring hole, influence spring pretension function, improve navigating mate driving safety nature.

Drawings

FIG. 1 is a front partial cross-sectional view of the present invention;

fig. 2 is a top view of the present invention;

fig. 3 is a left side sectional view of the present invention;

fig. 4 is an enlarged view of the position a of the present invention.

In the figure: 1. the steering gear comprises a steering gear shell, 2, an upper bearing, 3, a lower bearing, 4, a driving gear, 5, an oil seal gasket, 6, a seal cover, 7, a nut cover, 8, an oil seal, 9, a guide pipe, 10, a sewage discharge pipe, 11, an annular drainage groove, 12, a seal cover, 13, a cylindrical block, 14, a steering rack, 15, a dustproof gasket, 16, a side cover, 17, a locking nut, 18, an adjusting bolt, 19, a compensation spring, 20, a seal gasket, 21, a rack guide sleeve, 22 and a seal fiber sleeve.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: an antifouling device of a self-flowing steering gear and the steering gear thereof comprise a steering gear shell 1, an upper bearing 2 and a lower bearing 3 are respectively embedded at the upper end and the lower end of the front side of an inner cavity of the steering gear shell 1, the outer rings of the upper bearing 2 and the lower bearing 3 are respectively fixedly connected with the upper end and the lower end of the inner wall of the front side of the steering gear shell 1, the inner rings of the upper bearing 2 and the lower bearing 3 are in interference fit with a driving gear 4 along the vertical direction, the outer wall of the driving gear 4 and the upper end and the lower end of the lower bearing 3 of the upper bearing 2 are in interference fit with an oil seal gasket 5, the oil seal gasket 5 can ensure that lubricating oil in the upper bearing 2 and the lower bearing 3 can not leak to the outside, a seal cover 6 is clamped at the top end of the outer wall of the steering gear shell 1, a nut cover 7 is screwed at the top end of the inner cavity of the steering gear shell 1, the top end, an oil seal 8 is embedded in the upper surface of the nut cover 7, the oil seal 8 can prevent lubricating oil in the steering gear shell 1 from leaking, the inner cavity of the oil seal 8 is sleeved with the top end of the outer wall of the driving gear 4, a self-flowing pollution discharge mechanism is arranged at the bottom end of the front side of the inner cavity of the steering gear shell 1 and positioned at the outer side of the driving gear 4, a steering rack 14 meshed with the driving gear 4 is inserted and connected at the rear side of the inner cavity of the steering gear shell 1 along the left and right directions, a steering control mechanism drives the driving gear 4 to rotate on the inner rings of the upper bearing 2 and the lower bearing 3, so that the steering rack 14 converts the horizontal rotation of the driving gear 4 into the linear motion of the steering rack 14 under the action of the rotating force of the driving gear 4, the steering rack 14 passes through an external steering drag link, a steering, the dustproof pad 15 on the right side of the steering gear shell 1 can prevent the steering rack 14 from bringing a large amount of external dust into the steering gear shell 1 in the process of linear motion, the rear side of the steering rack 14 is sleeved with a rack guide sleeve 21, the rear side of the inner cavity of the steering gear shell 1 is provided with a side cover 16, the central position of the rear side of the side cover 16 is provided with a locking nut 17, the inner cavity of the locking nut 17 is screwed with an adjusting bolt 18, the front side of the outer wall of the adjusting bolt 18 extends out of the front side of the side cover 16 and contacts with the rear side of the rack guide sleeve 21, the front side of the outer wall of the adjusting bolt 18 is sleeved with a compensating spring 19, the front end and the rear end of the compensating spring 19 are respectively clamped with the rear side of the rack guide sleeve 21 and the front side of the outer wall of the adjusting bolt 18, the front end and the rear end of the compensating spring 19 are both provided with, so that the sealing fabric sleeve 22 outside the outer wall of the sealing fabric sleeve is elastically deformed synchronously, thereby keeping the protection of the outer side of the compensating spring 19.

Preferably, the self-flowing sewage draining mechanism comprises a flow guiding pipe 9, a sewage draining pipe 10, an annular drainage groove 11, a sealing cover 12 and a cylindrical block 13;

four guide pipes 9 are embedded in the bottom end of the inner cavity of the steering gear shell 1 and positioned at the outer side of the top end of the lower bearing 3 along the circumferential direction, the top ends of the four guide pipes 9 extend out of the bottom end of the inner cavity of the steering gear shell 1 and are provided with annular drainage grooves 11 along the bottom end of the driving gear 4, the bottom end of the guide pipe 9 is provided with a sewage discharge pipe 10 communicated with the inner cavity of the guide pipe 9, a steering rack 14 and the driving gear 4 are meshed and rotate to cause lubricating oil leakage, so that the leaked lubricating oil flows into the annular drainage grooves 11 and flows into the guide pipe 9 along the inner wall of the annular drainage grooves 11 to cause the lubricating oil to enter the outer side of the inner cavity of the sewage discharge pipe 10 from the guide pipe 9, the outer wall of the sewage discharge pipe 10 extends out of the steering gear shell 1 and is in threaded connection with a sealing cover 12, the inner, the sealing cover 12 can be screwed out to enable the cylindrical block 13 to release the sealing of the sewage draining pipe 10, and then the lubricating oil is discharged.

Preferably, the four guide pipes 9 are arranged on the outer side of the bottom end of the driving gear 4 at intervals of 90 degrees clockwise, and the number of the guide pipes 9 is increased to facilitate the discharge of lubricating oil in the annular drainage groove 11.

Preferably, an included angle between the drainage pipe 10 and the draft tube 9 is 120 degrees, so that the lubricating oil enters the inner cavity of the drainage pipe 10 from the draft tube 9 and flows to the outer side of the inner cavity of the drainage pipe 10 along the inner wall of the drainage pipe 10.

Preferably, the outer side of the top end of the inner cavity of the annular drainage groove 11 is inclined downwards towards the top end of the inner cavity of the draft tube 9 from outside to inside, and the lubricating oil in the annular drainage groove 11 can slide into the draft tube 9 along the inner wall of the annular drainage groove 11.

The detailed connection means is a technique known in the art, and the following mainly describes the working principle and process, and the specific operation is as follows.

When the device is installed, a worker rotates the locking nut 17 to the front side, the locking nut 17 is screwed to the front side in the inner cavity of the adjusting bolt 18 to drive the rack guide sleeve 21 to move to the front side and push the steering rack 14 to the front side, so that tooth grooves on the steering rack 14 are tightly attached to tooth teeth in the driving gear 4, the locking nut 17 moves to the front side and simultaneously extrudes the compensation spring 19, the compensation spring 19 generates elastic deformation to keep stable tension, and further to ensure that the steering rack 14 is meshed with the driving gear 4 without clearance, because the sealing fiber sleeve 22 has elasticity, the sealing fiber sleeve 19 generates elastic deformation and simultaneously can enable the sealing fiber sleeve 22 on the outer wall of the sealing fiber sleeve 22 to synchronously generate elastic deformation, further to keep the protection on the outer side of the compensation spring 19, and under the matching of the sealing gaskets 20 on the front side and the rear side of the compensation spring 19, the, when the steering gear is used, a driver rotates the steering control mechanism, the steering control mechanism drives the driving gear 4 to rotate on the inner rings of the upper bearing 2 and the lower bearing 3, the driving gear 4 is meshed with the steering rack 14, so that the steering rack 14 enables the horizontal rotation of the driving gear 4 to be changed into the linear motion of the steering rack 14 under the action of the rotating force of the driving gear 4, the dustproof pad 15 on the right side of the steering gear shell 1 can prevent the steering rack 14 from bringing a large amount of external dust into the steering gear shell 1 in the linear motion process, the steering rack 14 enables two wheels to deflect around a main pin through an external steering straight pull rod, a steering swing rod and a left and right steering tie rod, and the steering operation is finished, so that the normal rotation of the driving gear 4 and the smooth and flexible meshing rotation between the driving gear 4 and the steering rack 14 are ensured, when the device is installed, lubricating oil is smeared on the surfaces of the inner rings of the upper bearing 2 and the lower bearing 3 and the steering rack 14 and the driving gear 4, when the driving gear 4 rotates, the oil seal pads 5 on the upper side and the lower side of the upper bearing 2 and the lower bearing 3 can ensure that the lubricating oil in the upper bearing 2 and the lower bearing 3 can not leak to the outside, and prevent external dust from entering and adhering to the lubricating oil to form dirt, thereby affecting the normal rotation of the driving gear 4, the lubricating oil caused by the meshing rotation of the steering rack 14 and the driving gear 4 leaks, so that the leaked lubricating oil flows into the annular drainage groove 11 and flows into the guide pipe 9 along the inner wall of the annular drainage groove 11, as the guide pipe 9 and the drain pipe 10 are obliquely arranged, the lubricating oil enters the outer side of the inner cavity of the drain pipe 10 from the guide pipe 9, and when a maintenance worker overhauls, the cylindrical block 12 is screwed, and then discharge lubricating oil to can discharge the lubricating oil of the inside seepage of steering gear, avoid outside dust contact to form the filth and hinder gear and bearing normal work, and can protect the inside compensating spring of steering gear, avoid the filth to enter into the spring hole, influence spring pretension function, improve navigating mate driving safety nature.

In the description of the present invention, it is to be understood that the terms "top end", "bottom end", "one end", "front side", "rear side", "other end", "upper", "lower", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated; also, unless expressly stated or limited otherwise, the terms "mounted," "screwed," "plugged," "interference fit," "disposed," and the like are to be construed broadly, e.g., as a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

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.

Claims (5)

1. The utility model provides a dirty-proof device of gravity flow steering gear and steering gear thereof, includes steering gear casing (1), its characterized in that: the upper end and the lower end of the front side of the inner cavity of the steering gear shell (1) are respectively embedded with an upper bearing (2) and a lower bearing (3), the outer ring of the upper bearing (2) and the lower bearing (3) are respectively fixedly connected with the upper end and the lower end of the inner wall of the front side of the steering gear shell (1), the inner ring of the upper bearing (2) and the inner ring of the lower bearing (3) are in interference fit with a driving gear (4) along the vertical direction, the upper end and the lower end of the outer wall of the driving gear (4) and the lower end of the lower bearing (3) of the upper bearing (2) are in interference fit with an oil seal pad (5), the top end of the outer wall of the steering gear shell (1) is clamped with a seal cover (6), the top end of the inner cavity of the steering gear shell (1) is in screw connection with a nut cover (7), the top end of the driving gear (4) sequentially penetrates through, the inner cavity of the oil seal (8) is sleeved with the top end of the outer wall of the driving gear (4), a self-flowing pollution discharge mechanism is arranged at the bottom end of the front side of the inner cavity of the steering gear shell (1) and positioned at the outer side of the driving gear (4), a steering rack (14) meshed with the driving gear (4) is inserted into the rear side of the inner cavity of the steering gear shell (1) in the left-right direction, a dustproof pad (15) is arranged at the right side of the steering gear shell (1) and positioned at the outer side of the steering rack (14), a rack guide sleeve (21) is sleeved at the rear side of the steering rack (14), a side cover (16) is arranged at the rear side of the inner cavity of the steering gear shell (1), a locking nut (17) is arranged at the central position of the rear side of the side cover (16), an adjusting bolt (18) is screwed in the inner cavity of the locking nut (17), the front side of the outer wall of the adjusting bolt (18) extends out of, the outer wall front side of adjusting bolt (18) has cup jointed compensating spring (19), both ends are respectively with the rear side of rack uide bushing (21) and the outer wall front side looks joint of adjusting bolt (18) around compensating spring (19), both ends all are provided with sealed pad (20) around compensating spring (19), sealed fibre cover (22) has been cup jointed to the outside of compensating spring (19).

2. The gravity flow type steering gear antifouling device and the steering gear thereof according to claim 1, wherein: the self-flowing sewage discharging mechanism comprises a flow guide pipe (9), a sewage discharging pipe (10), an annular drainage groove (11), a sealing cover (12) and a cylindrical block (13);

the inner chamber bottom of steering gear casing (1) and the top outside that is located lower bearing (3) have four honeycomb ducts (9), four along circumference embedded four honeycomb ducts (9) four the top of honeycomb duct (9) is extended the inner chamber bottom of steering gear casing (1) and is provided with annular drainage groove (11) along the bottom of driving gear (4), the bottom of honeycomb duct (9) is provided with and is led to the communicating blow off pipe (10) of honeycomb duct (9) inner chamber, the outer wall outside of blow off pipe (10) is extended the outside of steering gear casing (1) and the spiro union has sealed lid (12), the inner chamber of sealed lid (12) is provided with cylinder piece (13), and cylinder piece (13) are pegged graft with the inner chamber outside adaptation of blow off pipe (10).

3. The gravity flow type steering gear antifouling device and the steering gear thereof according to claim 2, wherein: the four guide pipes (9) are arranged on the outer side of the bottom end of the driving gear (4) at intervals of 90 degrees clockwise.

4. The gravity flow type steering gear antifouling device and the steering gear thereof according to claim 2, wherein: the included angle between the sewage draining pipe (10) and the flow guiding pipe (9) is 120 degrees.

5. The gravity flow type steering gear antifouling device and the steering gear thereof according to claim 2, wherein: the outer side of the top end of the inner cavity of the annular drainage groove (11) is downwards inclined towards the top end of the inner cavity of the drainage pipe (9) from outside to inside.

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