CN113800187B

CN113800187B - Special tool for steering knuckle

Info

Publication number: CN113800187B
Application number: CN202110930873.2A
Authority: CN
Inventors: 刘慧建; 王晓真; 智德全
Original assignee: Chery Automobile Co Ltd
Current assignee: Chery Automobile Co Ltd
Priority date: 2021-08-13
Filing date: 2021-08-13
Publication date: 2023-01-03
Anticipated expiration: 2041-08-13
Also published as: CN113800187A

Abstract

The invention provides a special tool for a steering knuckle, wherein one end of a bolt is connected with a handle, the front section of the bolt is provided with a limiting column or a ball which extends or retracts along the radial direction of the bolt, the limiting column or the ball is positioned in the range of the peripheral surface of the bolt when retracting, and a body of the limiting column or the ball is partially exposed outside the peripheral surface of the bolt when extending. When the steering knuckle brake assembly is used, the bolt is inserted into the lower control arm connecting hole of the steering knuckle, the handle of the bolt can provide a force application part, and the other force application part can be an upper control arm on the steering knuckle or a connecting arm of a shock absorber, so that two symmetrical force application parts are provided, the steering knuckle can be conveniently moved or moved, and even if the steering knuckle is connected with the brake to form a heavy steering knuckle brake assembly, the steering knuckle brake assembly can be conveniently carried; in addition, the arrangement of the limiting columns or the limiting balls ensures that the bolts can be separated from the connecting holes of the steering knuckle when the steering knuckle or the steering knuckle brake assembly is carried and moved, and safety accidents are avoided.

Description

Special tool for steering knuckle

Technical Field

The invention belongs to the field of automobile parts, and particularly relates to a special tool for carrying a steering knuckle and a brake assembly.

Background

The front steering knuckle is provided with a brake assembly, and is heavy in weight, so that the front steering knuckle needs to be reliably grabbed by two hands during manual carrying; normally, one hand can grab the upper part of the steering knuckle, but the other hand has no effective grabbing part and space, and the carrying is difficult.

A patent document entitled "a knuckle reverse carrying robot" (document No. CN 107986006A) discloses a carrying device provided with a suspension sleeve (18) and a hole pin (19), wherein a front moving cylinder 14 and a rear moving cylinder 16 push a front arm 12 and a rear arm 13, respectively, toward distal ends before gripping, and when a link 11 is moved to a set position, the front moving cylinder 14 and the rear moving cylinder 16 drive the front arm 12 and the rear arm 13, respectively, to move toward the middle, the hole pin 19 is inserted into a control arm through hole 21 of a knuckle, and the suspension sleeve 18 is made to suspend a damper arm 22 of the knuckle, and then lifted as a whole, and a workpiece is gripped. The carrying manipulator has obvious advantages in carrying the knuckle in large batch and long distance, and is especially suitable for carrying in a knuckle production workshop, the problem is that a loading or maintenance shop does not have a place where the front moving cylinder 14, the rear moving cylinder 16, the front boom 12, the rear boom 13 and the frame 11 to be connected are arranged at all, even if the robot is installed, the knuckle is dismounted from the car during loading or maintenance, and the technical scheme disclosed by the document has no arrangement and operation opportunities.

Disclosure of Invention

The invention aims to provide a special tool for a steering knuckle, which is convenient for manually carrying a steering knuckle brake assembly.

A knuckle specialized tool, its characterized in that: one end of the bolt is connected with a handle, the front section of the bolt is provided with a limiting column or a ball which extends or retracts along the radial direction of the bolt, the limiting column or the ball is positioned in the range of the peripheral surface of the bolt when retracting, and the body of the limiting column or the ball is partially exposed outside the peripheral surface of the bolt when extending.

In the scheme, when the steering knuckle brake assembly is used, the bolt is inserted into the lower control arm connecting hole of the steering knuckle, the handle of the bolt can provide a force application part, and the other force application part can be an upper control arm on the steering knuckle or a connecting arm of a shock absorber, so that two symmetrical force application parts are provided, the steering knuckle can be conveniently moved or moved, and even if the steering knuckle is connected with the brake to form a heavy steering knuckle brake assembly, the steering knuckle brake assembly can be conveniently carried; in addition, the arrangement of the limiting columns or the limiting balls ensures that the bolts can be separated from the connecting holes of the steering knuckle when the steering knuckle or the steering knuckle brake assembly is carried and moved, and safety accidents are avoided.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a view taken along line A of FIG. 1;

FIG. 3 isbase:Sub>A sectional view A-A of FIG. 2;

FIG. 4 is a perspective view of the knuckle brake assembly;

fig. 5 is a perspective view of the present invention in use.

Detailed Description

As shown in fig. 1 to 3, in a steering knuckle special tool, one end of a bolt 20 is connected with a handle 10, a front section of the bolt 20 is provided with a limit post or ball 30 which protrudes or retracts along the radial direction of the bolt 20, the limit post or ball 30 is located within the range of the peripheral surface of the bolt 20 when retracting, and a body of the limit post or ball 30 is partially exposed outside the peripheral surface of the bolt 20 when protruding.

With reference to fig. 4 and 5, the above solution is to insert the latch 20 into the lower ball pin hole 2 of the knuckle 1 for connecting to the lower control arm, when the limiting post or ball 30 of the latch 20 retracts, the latch 20 is conveniently inserted into the lower ball pin hole 2 of the knuckle 1, and can protrude outward when reaching the inner end of the lower ball pin hole 2, when no radial external force is applied, the exposed part of the limiting post or ball 30 abuts against the inner end surface of the lower ball pin hole 2, so as to prevent the latch 20 from moving out of the lower ball pin hole 2, and perform a safe anti-return and anti-slip function, the handle 10 provides one force application point, and another force application point can select a corresponding part on the knuckle 1 or the brake 4, such as the connecting arm 3 or the brake 4 of the upper control arm on the knuckle 1, and two force application points can carry or move the knuckle brake assembly.

As shown in fig. 3, the plug 20 is tubular and a spring 40 is disposed in the lumen of the plug, and the spring 40 provides a resilient force to drive the position-limiting post or ball 30 to protrude outwards. The limiting column or ball 30 is driven by the spring 40 to protrude outwards, so that the limiting column or ball is convenient to implement and simple in structure.

The limiting ball 30 is a round ball and is located in the conical hole 22 in the radial direction of the bolt 20, the conical hole 22 is large in inner end, small in outer end, and the diameter of the outer end is smaller than the diameter of the limiting ball 30 and larger than the diameter of the limiting ball 30 by 1/2. A round ball is selected as the limiting ball 30, the protruding exposed spherical surface of the limiting ball is matched with the inner end face of the lower ball pin hole 2 to play a role of safety check, and meanwhile, the hole wall of the lower ball pin hole 2 cannot be scratched in the process of penetrating through the lower ball pin hole.

As shown in fig. 3, the plug 20 is in a tube shape with a plug 21 at one end, a push rod 50 is inserted into a tube cavity of the plug 20, a spring 40 arranged between a rod end of the push rod 50 and the plug 21 is a compression spring, an inclined surface 51 is arranged on a rod body of the push rod 50, a distance between an inner end of the inclined surface 51 and a tube wall of the plug 20 is small, and a distance between an outer end of the inclined surface 51 and the tube wall of the plug 20 is large. In the above scheme, when the inclined surface 51 of the ejector pin 50 is matched with the limiting ball 30, the position of the limiting ball 30 retracting inwards or protruding outwards is limited, for example, when the ejector pin 50 moves leftwards, the limiting ball 30 contacts with the high part at the right end of the inclined surface 51, and the limiting ball 30 protrudes outwards; when the pushing rod 50 is displaced to the right, the spring 40 is compressed, the limiting ball 30 is contacted with the lower part of the left end of the inclined plane 51, and the limiting ball 30 can retract inwards.

In order to ensure that the position of the limiting ball 30 can be aligned with the taper hole 22 during initial installation, side walls 52 are arranged on two sides of the inclined surface 51, and the wall surfaces of the side walls 52 are parallel to the length direction of the ejector rod 50. The position of the limit ball 30 on the ejector pin 50 is determined, that is, the limit ball 30 is limited in a groove cavity of an inclined bottom groove formed by the inclined surface 51 and the side wall 52, and can mark an alignment mark of the inclined bottom groove and the taper hole 22, under the action of the elastic force of the spring 40, part of the ball body of the limit ball 30 is positioned in the taper hole 22, and part of the ball body is positioned in the inclined bottom groove, so that after insertion and removal are ensured, the ejector pin 50 and the plug pin 20 are simultaneously limited from moving randomly and being separated.

Preferably, the inclined surface 51 is arranged on the circumferential surface of the ejector rod 50 in a mirror symmetry manner by taking the rod core of the ejector rod 50 as a symmetry line, and two taper holes 22 and two limit balls 30 are symmetrically arranged on the tube wall of the bolt 20. Therefore, the state that the bolt 20 is matched and plugged with the lower ball pin hole 2 can be ensured to be more stable and reliable.

The end of the bolt 20 far away from the limit column or ball 30 is provided with a handle 10, and the handle 10 is a cross rod section 11 which is formed by enclosing rod pieces into a ring shape and has an upper part convenient for holding. As shown in fig. 1, a cross bar segment 11 on the handle 10 provides a convenient grip.

As shown in fig. 1, the annular region enclosed by the handle 10 is an annular region which is large at the upper part and small at the lower part and is T-shaped as a whole, the outer cylindrical surface of the plug pin 20 is stepped, the outer cylindrical surface 23 of the large-diameter section of the plug pin is arranged at the lower part of the lower abdominal cavity of the handle 10, and the annular surface of the handle 10 is vertical to the length direction of the plug pin 20. The above-mentioned scheme can ensure the reliability of the connection between the handle 10 and the bolt 20, and the annular surface of the handle 10 is perpendicular to the length direction of the bolt 20, i.e. the transverse rod section 11 is ensured to be perpendicular to the length direction of the bolt 20, and the position relationship is favorable for applying force during holding.

Claims

1. A knuckle specialized tool, its characterized in that: one end of the bolt (20) is connected with the handle (10), the front section of the bolt (20) is provided with a limiting ball (30) which extends or retracts along the radial direction of the bolt (20), the limiting ball (30) is positioned in the range of the peripheral surface of the bolt (20) when retracting, and the body of the limiting ball (30) is partially exposed outside the peripheral surface of the bolt (20) when extending;

the limiting ball (30) is a round ball and is positioned in a taper hole (22) in the radial direction of the bolt (20), the taper hole (22) is large at the inner end and small at the outer end, and the aperture of the outer end is smaller than the diameter of the limiting ball (30) and larger than 1/2 of the diameter of the limiting ball (30);

the plug (20) is in a barrel shape with a plug (21) arranged at one end, a push rod (50) is inserted in a pipe cavity of the plug (20), a spring (40) arranged between a rod end of the push rod (50) and the plug (21) is a compression spring, an inclined plane (51) is arranged on a rod body of the push rod (50), the distance between the inner end of the inclined plane (51) and the pipe wall of the plug (20) is small, and the distance between the outer end of the inclined plane (51) and the pipe wall of the plug (20) is large;

the two sides of the inclined surface (51) are provided with side walls (52), and the wall surfaces of the side walls (52) are parallel to the length direction of the ejector rod (50);

the annular area surrounded by the handle (10) is an annular area which is large at the upper part and small at the lower part and is integrally T-shaped, the plug pin (20) is in a step shape, the outer cylindrical surface (23) of the large-diameter section of the plug pin is arranged at the lower part of the abdominal cavity of the lower part of the handle (10), and the annular surface of the handle (10) is vertical to the length direction of the plug pin (20);

when the steering knuckle is used, the bolt (20) is inserted into a lower control arm connecting hole of the steering knuckle, a handle of the bolt (20) can be used for providing a force application part, and the other force application part is an upper control arm on the steering knuckle or a connecting arm of a shock absorber, so that two symmetrical force application parts are provided.

2. The knuckle special tool according to claim 1, wherein: the inclined plane (51) is arranged on the circumferential surface of the ejector rod (50) in a mirror symmetry mode by taking a rod core of the ejector rod (50) as a symmetry line, and the pipe wall of the bolt (20) is symmetrically provided with two taper holes (22) and two limiting balls (30).

3. The knuckle special tool according to claim 1, characterized in that: a handle (10) is arranged at one end of the bolt (20) far away from the limiting ball (30), and the handle (10) is an annular transverse rod section (11) which is formed by enclosing rod pieces and is convenient to hold at the upper part.