CN111571524A

CN111571524A - Disassembling tool for steering gear outer ball head and steering knuckle

Info

Publication number: CN111571524A
Application number: CN202010419420.9A
Authority: CN
Inventors: 李彩霞; 陶薛磊; 肖俊华; 黄建义
Original assignee: Chery Automobile Co Ltd
Current assignee: Chery Automobile Co Ltd
Priority date: 2020-05-18
Filing date: 2020-05-18
Publication date: 2020-08-25

Abstract

The invention aims to provide a disassembling tool for an outer ball head and a steering knuckle of a steering gear, which can effectively disassemble a taper fit structure of the steering gear and the steering knuckle. In the scheme, the distance between the upper plate and the lower plate at the end is adjusted by the adjusting mechanism to be increased by utilizing a lever principle, the jaw at the other end can be folded, and the upper plate presses the outer ball head of the steering gear downwards to enable the ball head to fall off from the steering knuckle, so that the outer ball head of the steering gear and the steering knuckle are disassembled.

Description

Disassembling tool for steering gear outer ball head and steering knuckle

Technical Field

The invention relates to the technical field of automobile steering systems, in particular to a tool for disassembling an outer ball head and a steering knuckle of a steering gear.

Background

With the continuous development of automobile industry in China, the requirements of customers on the quality performance of automobiles and the performance of parts in the whole automobile are higher and higher, so that when the design of the parts is verified, the parts can be repeatedly disassembled to verify different schemes. As a transverse control mechanism of an automobile, design verification of a steering gear is an indispensable link in the whole automobile design verification stage, and from the design and freezing of a first-wheel sample piece to the final design and freezing, the steering gear usually has a piece dismounting and replacing process for tens of times or even tens of times. The outer ball head of present steering gear adopts taper fit with the knuckle, and nut locking connection mode, dismantles the in-process in the reality, because taper fit is too tight difficult to dismantle, uses the hammer to beat the knuckle hard and just can make the bulb not hard up usually, dismantles the steering gear. Meanwhile, when the steering gear is replaced after sale, the steering knuckle is also knocked by the hammer, and peripheral parts are easily knocked due to the limitation of the disassembly space in the knocking process, so that the taper of the steering knuckle is damaged, and the surface treatment of other peripheral parts is damaged.

Disclosure of Invention

The invention aims to provide a disassembling tool for an outer ball head and a steering knuckle of a steering gear, which can effectively disassemble a taper fit structure of the steering gear and the steering knuckle.

In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a frock is dismantled with knuckle to outer bulb of steering gear, the middle part of upper and lower plate of slat shape has the joint support portion, constitutes open-close type keeping silent between upper and lower plate homonymy, keeps away from the other end of keeping silent and sets up the adjustment mechanism who adjusts upper and lower plate interval.

In the scheme, the distance between the upper plate and the lower plate at the end is adjusted to be increased by the adjusting mechanism by utilizing the lever principle, the jaw at the other end can be folded, and the upper plate presses the outer bulb of the steering gear downwards to enable the bulb to fall off from the steering knuckle, so that the outer bulb of the steering gear and the steering knuckle are disassembled.

Drawings

FIG. 1 is a schematic view of the overall structure of the removal tool;

FIG. 2 is a block diagram of the upper bracket;

FIG. 3 is a view showing the construction of the lower bracket;

fig. 4 is a schematic view of the working state of the disassembling tool.

Detailed Description

Referring to fig. 1-4, a tool for detaching an outer bulb and a steering knuckle of a steering gear comprises a connecting support part 30 arranged in the middle of upper and

lower strip plates

10, 20, an open-close type jaw is formed between the same ends of the upper and

lower plates

10, 20, and an adjusting mechanism 40 for adjusting the distance between the upper and

lower plates

10, 20 is arranged at the other end far away from the jaw. By utilizing the lever principle, the adjusting mechanism 40 adjusts the distance between the upper plate 10 and the lower plate 20 at the end to be increased, the jaw at the other end is folded, the upper plate 10 presses the steering gear outer ball head A down, so that the ball head falls off from the steering knuckle support B, and the disassembly of the steering gear outer ball head A and the steering knuckle is completed.

The lower end of the connecting support part 30 is connected with the lower plate 20, the upper end of the connecting support part 30 is movably connected with the upper plate 10, and the moving mode is at least a rotating mode around the plane vertical to the upper plate 10 and the lower plate 20. It is also understood that when the planes of the upper and

lower plates

10 and 20 are simply vertical, the surface of revolution of the upper plate 10 is located in the vertical plane and the axis of revolution is in the horizontal direction perpendicular to the vertical plane.

The adjusting mechanism 40 includes a screw rod 41 in threaded connection with the lower plate 20, and an end of the screw rod 41 is in abutting fit with the lower plate surface of the upper plate 10. The screw 41 is pressed against the upper plate 10 to adjust the distance between the upper and

lower plates

10, 20 at the end.

Further, the end of the lower plate 20 constituting the jaw is provided with a U-shaped notch 21, and the direction of the U-shaped notch 21 is consistent with the length direction of the lower plate 20. The U-shaped gap 21 is clamped on the pin body of the outer ball head A of the steering gear, so that on one hand, the effect of avoiding is achieved, and on the other hand, the lower plate 20 is limited.

The connection support portion 30 includes connecting pin 31, connecting pin 31's round pin body and lower 20 threaded connection of board, the upper end of connecting pin 31 passes the via hole 11 and the protrusion of seting up on the upper plate 10 in the upper end face of upper plate 10, connecting pin 31's upper end is connected with cylindric round pin head 32, arc recess 12 has been seted up to the face on the peripheral upper bracket 10 of via hole 11, the camber center of arc recess 12 and the central line collineation of round pin head 32, constitute normal running fit in arc recess 12 is arranged in to round pin head 32. Since the jaw and the screw 41 are separately disposed at both sides of the connecting pin 31, when the screw 41 is rotated, the upper plate 10 rotates around the pin head 32, the distance between the upper and

lower plates

10, 20 at the screw side increases, the distance between the upper and

lower plates

10, 20 at the jaw side decreases, and the position of the lower plate 20 is limited by the lower end surface of the knuckle bracket B, so that the upper plate 10 moves downward, and presses the outer ball head a of the steering gear to loosen the engagement with the knuckle bracket B until the outer ball head a falls.

Considering the length of the outer ball a of the steering gear and the height of the knuckle bracket B of different vehicle models, a spring 51 is sleeved on the pin body of the connecting pin 30 between the upper and

lower plates

10, 20, and the spring 51 provides an elastic force to urge the upper and

lower brackets

10, 20 away from each other. Spring seats 52 are fixed on the lower plate surface of the upper plate 10 and the upper plate surface of the lower plate 20, and two ends of the spring 51 are respectively abutted against the spring seats 52. The coupling pin 31 is combined with the spring 51, and when the steering outer bulb a of different lengths is disassembled, the coupling pin 31 is adjusted to increase or decrease the distance between the upper and

lower plates

10, 20 to a proper position, and then the elastic force of the spring 51 maintains the upper and

lower plates

10, 20 in a spaced-apart state. The through hole 13 is arranged at the position, corresponding to the screw rod 41, of the upper plate 10, the nut support 42 is sleeved on the rod body of the screw rod 41, the aperture of the through hole 13 is larger than the outer diameter of the screw rod 41 and smaller than the outer diameter of the nut support 42, and therefore when the screw rod 41 is adjusted, the upper plate 10 can rotate freely and cannot be clamped. Because the reusability of the tool is very high, the upper plate 10 is very stressed when the screw rod 41 is screwed down and is worn for a long time, the nut support 42 is arranged, the height of the head nut support 42 of the screw rod 41 can be freely adjusted by adjusting the position of the nut support 42 on the screw rod 41 when the head nut support 42 is worn, and meanwhile, when the head nut support 42 is worn for a long time and cannot be used, the nut support 42 can be only replaced, the tool can be reused, the cost is saved, and the utilization rate of the tool is improved.

In order to fix the outer ball head A of the steering gear, the lower plate surface of the upper plate 10 at the position corresponding to the outer ball head A of the steering gear is provided with a U-shaped groove 14, so that the phenomenon that the outer ball head A of the steering gear and the upper plate 10 are staggered in a sliding mode due to too large external force in the dismounting process is avoided.

The lower plate surface of the upper plate 10 corresponding to the outer ball head A of the steering gear is higher than the lower plate surfaces of other positions, and in order to avoid scratching a pin sheath of the outer ball head A of the steering gear, the lower plate surface of the lower plate 20 corresponding to the knuckle support B is provided with a missing part.

Claims

1. The utility model provides a dismantlement frock of outer bulb of steering gear and knuckle which characterized in that: the middle parts of the upper and lower strip-shaped plates (10, 20) are provided with connecting support parts (30), an open-close type jaw is formed between the same ends of the upper and lower plates (10, 20), and the other end far away from the jaw is provided with an adjusting mechanism (40) for adjusting the distance between the upper and lower plates (10, 20).

2. The frock of dismantling of outer bulb of steering gear and knuckle of claim 1, characterized in that: the lower end of the connecting and supporting part (30) is connected with the lower plate (20), the upper end of the connecting and supporting part (30) is movably connected with the upper plate (10), and the moving mode is at least a rotating mode around the plane vertical to the upper plate (10) and the lower plate (20).

3. The frock of dismantling of outer bulb of steering gear and knuckle of claim 1, characterized in that: the adjusting mechanism (40) comprises a screw rod (41) in threaded connection with the lower plate (20), and the end part of the screw rod (41) is in abutting fit with the lower plate surface of the upper plate (10).

4. The frock of dismantling of outer bulb of steering gear and knuckle of claim 1, characterized in that: the end part of the lower plate (20) forming the jaw is provided with a U-shaped notch (21), and the direction of the U-shaped notch (21) is consistent with the length direction of the lower plate (20).

5. The frock of dismantling of steering gear outer bulb and knuckle of claim 2, characterized in that: connect supporting part (30) including connecting pin (31), the round pin body and hypoplastron (20) threaded connection of connecting pin (31), the upper end of connecting pin (31) is passed through via hole (11) of seting up on upper plate (10) and is protruded in upper plate (10) up end, the upper end of connecting pin (31) is connected with cylindric round pin head (32), arc recess (12) have been seted up to face on peripheral upper bracket (10) of via hole (11), the camber center of arc recess (12) and the central line collineation of round pin head (32), constitute normal running fit in arc recess (12) is arranged in to round pin head (32).

6. The frock of dismantling of steering gear outer bulb and knuckle of claim 5, characterized in that: a spring (51) is sleeved on a pin body of the connecting pin (30) between the upper plate (10) and the lower plate (20), and the spring (51) provides elastic force to drive the upper bracket (10) and the lower bracket (20) to be away from each other.

7. The frock of dismantling of outer bulb of steering gear and knuckle of claim 6, characterized in that: spring seats (52) are fixed on the lower plate surface of the upper plate (10) and the upper plate surface of the lower plate (20), and two ends of the spring (51) are respectively abutted against the spring seats (52).

8. The frock of dismantling of outer bulb of steering gear and knuckle of claim 3, characterized in that: a through hole (13) is formed in the position, corresponding to the screw rod (41), of the upper plate (10), a nut support (42) is sleeved on the rod body of the screw rod (41), and the aperture of the through hole (13) is larger than the outer diameter of the screw rod (41) and smaller than the outer diameter of the nut support (42).

9. The frock of dismantling of steering gear outer bulb and knuckle of claim 8, characterized in that: and a U-shaped groove (14) is formed in the lower plate surface of the upper plate (10) at the position corresponding to the outer ball head A of the steering gear.

10. The frock of dismantling of outer bulb of steering gear and knuckle of any one of claims 1-9, characterized in that: the lower plate surface of the upper plate (10) at the position corresponding to the outer ball head A of the steering gear is higher than the lower plate surfaces at other positions, and the lower plate surface of the lower plate (20) at the position corresponding to the knuckle bracket B is provided with a missing part.