CN117517115A

CN117517115A - Fatigue test mechanism

Info

Publication number: CN117517115A
Application number: CN202410020337.2A
Authority: CN
Inventors: 欧安迎; 王佳; 韦安忠; 李�昊
Original assignee: Zhejiang Ruitai Suspension System Technology Ltd
Current assignee: Zhejiang Ruitai Suspension System Technology Ltd
Priority date: 2024-01-08
Filing date: 2024-01-08
Publication date: 2024-02-06
Anticipated expiration: 2044-01-08
Also published as: CN117517115B

Abstract

The invention provides a fatigue test mechanism, which is used for testing a swing arm assembly, and relates to the technical field of fatigue test equipment, wherein the fatigue test mechanism comprises a rack provided with a ball head abrasion test seat and a loading mechanism connected with the rack and the swing arm assembly, a ball head pin of the swing arm assembly is arranged on the ball head abrasion test seat, and the loading mechanism is connected with the rack along an X axis and a Y axis and connected with the swing arm assembly along a Z axis to carry out a swing arm fatigue test; the fixing piece is arranged on the bench and is used for being connected with the ball stud and fixed on the ball head abrasion test seat, the ratchet wrench is arranged on the fixing piece and used for controlling the fixing piece to disassemble and assemble the ball stud when the ball head abrasion test seat is not disassembled. The fixing piece controls the tightness nut, so that the problem that the ball pin of the swing arm assembly is firstly arranged on the ball head abrasion test seat and then the ball head abrasion test seat is arranged on the rack during fatigue test is solved, and the ball pin can be quickly detached and replaced under the condition that the ball head abrasion test seat is not detached.

Description

Fatigue test mechanism

Technical Field

The invention relates to the technical field of fatigue testing equipment, in particular to a fatigue testing mechanism.

Background

The ball pin assembly is used as a key part in an automobile steering system, is positioned between a steering gear and a knuckle arm and moves up and down along with the tire, and transmits steering force of a steering wheel to the tire through rotation and swing of the ball pin, so that the up-and-down runout and steering movement of the wheel are realized, and the ball pin assembly is a key part for ensuring the stability of the operation of the automobile, the smoothness, the comfort and the safety of the running and ensuring the correct and accurate running of the automobile. When the ball pin assembly breaks down, the stability of the automobile is affected by light weight, and the operation failure of the automobile is caused by heavy weight, so that safety accidents occur. Thus, the reliability of the ball stud assembly is very important to overall vehicle safety.

During fatigue test, the ball pin of the swing arm assembly is arranged on the ball wear test seat, and then the ball wear test seat is arranged on the rack, so that the operation is always required to be repeated when the ball pin is detached and replaced at present, and the replacement is very inconvenient.

Disclosure of Invention

The invention provides a fatigue test mechanism which is characterized in that the fixing of a ball pin and a ball wear test seat is controlled by a bench, and the ball pin can be quickly detached without detaching the ball wear test seat.

In order to solve the technical problems, the invention solves the problems that the ball pin of the swing arm assembly is arranged on the ball wear test seat and then the ball wear test seat is arranged on the rack in fatigue test, and the operation is always needed to be repeated when the ball pin is detached and replaced at present, so that the replacement is very inconvenient.

In order to achieve the above purpose, the present invention adopts the following technical scheme:

the fatigue test mechanism is used for testing a swing arm assembly and comprises a rack provided with a ball head abrasion test seat and a loading mechanism connected with the rack and the swing arm assembly, wherein a ball head pin of the swing arm assembly is arranged on the ball head abrasion test seat, and the loading mechanism is connected with the rack along an X axis and a Y axis and connected with the swing arm assembly along a Z axis to carry out a swing arm fatigue test; the fixing piece is arranged on the bench and is used for being connected with the ball stud and fixed on the ball head abrasion test seat, the ratchet wrench is arranged on the fixing piece and used for controlling the fixing piece to disassemble and assemble the ball stud when the ball head abrasion test seat is not disassembled. The fixing piece controls the tightness nut, so that the problem that the ball pin of the swing arm assembly is firstly arranged on the ball head abrasion test seat and then the ball head abrasion test seat is arranged on the rack during fatigue test is solved, and the ball pin can be quickly detached and replaced under the condition that the ball head abrasion test seat is not detached.

Preferably, the rack comprises a platform, a first bottom plate and a second bottom plate, wherein the first bottom plate is connected with the second bottom plate through an X-direction sliding rail structure, the platform is connected with the first bottom plate through a Y-direction sliding rail structure, the ball head abrasion testing seat is arranged on the platform, and side walls connected with the loading mechanism in an X-axis and a Y-axis are configured on the side edges of the platform.

Preferably, the platform is provided with a through hole, the first bottom plate is provided with a notch which is open to one side, the fixing piece is arranged on the second bottom plate, and the fixing piece passes through the notch and the through hole and is connected with the ball pin on the ball wear test seat. The notch which is opened to one side is formed in the first bottom plate, so that the whole of the first bottom plate is constructed to be approximate to a U-shaped structure, space is provided for the fixing piece, and the ratchet wrench is convenient to control after extending the rack and the fixing piece. And the notch is arranged to prevent the fixing piece from limiting the table frame when the table frame swings along the Y axis or the X axis.

Preferably, the ball head abrasion test seat is provided with an upper blind hole and a lower blind hole, the upper blind hole is communicated with the lower blind hole, and the ball head pin penetrates into the lower blind hole from the upper blind hole to be connected with the fixing piece.

Preferably, the fixing piece comprises a thread sleeve, the thread sleeve is connected with the through hole in a threaded mode, a nut is clamped at the upper end of the thread sleeve, the nut is fixedly connected with the ball pin in a controlled mode through the thread sleeve, a polygon prism is arranged on the lower side of the thread sleeve, and the polygon prism is controlled by the bracket to move vertically and can be meshed with the thread sleeve.

Preferably, the polygon is mounted in a stop collar for vertical movement, and the stop collar is fixed to the second base plate.

Preferably, the bracket comprises a base, a claw buckle and a pedal, wherein a lever is arranged on the base, one end of the lever is connected with the claw buckle, the other end of the lever is connected with the pedal, and a lantern ring connected with the claw buckle is rotationally connected to the polygon prism.

Preferably, the upper portion of the polygon is configured as a polygon structure for engagement with a ratchet wrench and a threaded sleeve, and the lower portion is configured as a column for rotational engagement with a stop collar and a collar.

Preferably, the ratchet wrench is located at the upper end of the collar and is dragged by the collar, and can move vertically along with the polygon prism.

Preferably, a reaction frame is distributed on the side edge of the rack, and the swing arm assembly and the loading mechanism are installed on the reaction frame.

Compared with the prior art, the invention has the following beneficial effects:

the ball pin of the swing arm assembly is firstly arranged on the ball head abrasion test seat during fatigue test, and then the ball head abrasion test seat is arranged on the rack.

According to the invention, the through hole is formed in the platform, so that the fixing piece can conveniently extend upwards from the second bottom plate to the ball head abrasion test seat, and the nut for locking the ball head pin is controlled.

In the invention, the notch which is opened to one side is arranged on the first bottom plate, so that the whole structure is similar to a U-shaped structure, thereby not only providing space for the fixing piece, but also facilitating the control of the ratchet wrench after the rack is extended to the fixing piece. And the notch is arranged to prevent the fixing piece from limiting the table frame when the table frame swings along the Y axis or the X axis.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the overall perspective structure of the present invention;

FIG. 2 is a schematic diagram of the overall three-dimensional structure of the present invention;

FIG. 3 is a schematic view of the overall split structure of the present invention;

FIG. 4 is a schematic diagram of a gantry structure according to the present invention;

FIG. 5 is a schematic cross-sectional view of a ball wear test socket according to the present invention;

FIG. 6 is a schematic diagram of a split structure of a stand according to the present invention;

FIG. 7 is a schematic view of a fastener according to the present invention;

fig. 8 is a schematic view of the structure of the bracket of the present invention.

Description of the figure: 1. a stand; 11. a platform; 12. a first base plate; 13. a second base plate; 14. an X-direction slide rail structure; 15. a Y-direction slide rail structure; 16. a sidewall; 17. a notch; 18. a through hole; 2. a loading mechanism; 3. a ball head abrasion test seat; 31. an upper blind hole; 32. a lower blind hole; 4. a fixing member; 41. a thread sleeve; 42. a screw cap; 43. a polygonal column; 44. a bracket; 441. a base; 442. a claw buckle; 443. a pedal; 444. a lever; 445. a collar; 45. a limit sleeve; 5. a ratchet wrench; 6. and a reaction frame.

Detailed Description

The present invention is described in further detail below with reference to the accompanying drawings.

The following description is presented to enable one of ordinary skill in the art to practice the invention. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art. The basic principles of the invention defined in the following description may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.

It will be appreciated by those skilled in the art that in the present disclosure, the terms "longitudinal," "transverse," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. indicate orientations or positions based on the orientation or positional relationship shown in the drawings, which are merely for convenience in describing the present simplified description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and thus the above terms are not to be construed as limiting the present invention.

It will be understood that the terms "a" and "an" should be interpreted as referring to "at least one" or "one or more," i.e., in one embodiment, the number of elements may be one, while in another embodiment, the number of elements may be plural, and the term "a" should not be interpreted as limiting the number.

Examples

Referring to fig. 1-8, the present application provides a fatigue test mechanism for a swing arm assembly, which comprises a rack 1 provided with a ball head abrasion test seat 3, and a loading mechanism 2 connected with the rack 1 and the swing arm assembly, wherein a ball head pin of the swing arm assembly is arranged on the ball head abrasion test seat 3, the loading mechanism 2 is connected with the rack 1 along an X axis and a Y axis and the swing arm assembly along a Z axis for performing a swing arm fatigue test, a fixing piece 4 is arranged on the rack 1 and is connected and fixed on the ball head abrasion test seat 3 with the ball head pin, a ratchet wrench 5 is arranged on the fixing piece 4, and the ratchet wrench 5 is used for controlling the fixing piece 4 to disassemble and assemble the ball head pin when the ball head abrasion test seat 3 is not disassembled.

In the embodiment of the application, at least four reaction frames 6 are distributed around the rack 1, the swing arm assembly and the loading mechanisms 2 are installed on the reaction frames 6, wherein two loading mechanisms 2 are connected with the rack 1 along the X axis and the Y axis, the other loading mechanism 2 is connected with the swing arm assembly along the Z axis, and the ball pin of the swing arm assembly is installed on the rack 1 and installed on the ball wear test seat 3 on the rack 1. The fatigue test of the ball stud is performed in cooperation with the loading mechanism 2 and the stand 1.

It should be noted that the stand 1 is movable along an X axis and a Y axis, mainly, the stand 1 includes a platform 11, a first bottom plate 12 and a second bottom plate 13, the first bottom plate 12 and the second bottom plate 13 are connected through an X-direction sliding rail structure 14, the platform 11 and the first bottom plate 12 are connected through a Y-direction sliding rail structure 15, the ball wear test socket 3 is mounted on the platform 11, and a side wall 16 connected with the loading mechanism 2 along the X axis and the Y axis is configured on a side edge of the platform 11. The loading mechanism 2 can enable the ball head to swing when controlling the platform 11.

The ball stud is fixed on ball wear test seat 3, and ball wear test seat 3 rethread screw fixation is on platform 11, and in the embodiment of application, upper blind hole 31 and lower blind hole 32 have been seted up at the middle part of ball wear test seat 3, and upper blind hole 31 communicates with lower blind hole 32, and lower blind hole 32 diameter is greater than upper blind hole 31 diameter, and the ball stud is connected with mounting 4 by upper blind hole 31 penetrating in the lower blind hole 32. Further, the platform 11 is provided with a through hole 18 opposite to the lower blind hole 32, the first bottom plate 12 is provided with a notch 17 to form a U-shaped structure, the fixing piece 4 is mounted on the second bottom plate 13, and the fixing piece 4 passes through the notch 17 and the through hole 18 upwards and is connected with a ball pin on the ball wear test seat 3. The fixing piece 4 can be used for fixing the ball pin without detaching the ball wear test seat 3.

In the embodiment of the present application, the fixing member 4 includes a screw sleeve 41, a nut 42 and a polygonal column 43, the nut 42 is screwed into the ball stud to fix the ball stud thereto, the screw sleeve 41 is rotatably installed in the through hole 18, upper and lower ends of the screw sleeve 41 are respectively engaged with the nut 42 and the polygonal column 43, the ratchet wrench 5 is provided on the polygonal column 43, and then the nut 42 is screwed through the polygonal column 43. Further, the polygonal column 43 is vertically movable to be coupled to or decoupled from the screw housing 41. Namely, the polygon prism 43 is connected with the thread bush 41 when the ball stud is detached, and the polygon prism 43 is separated from the thread bush 41 when the ball stud is in fatigue test so as to avoid the polygon prism 43 from interfering with the movement of the platform 11.

Further, a collar 445 is mounted on the second base plate 13, and the polygon 43 is mounted in the collar 445 and moves vertically along the collar 445. In addition, the polygonal column 43 is constructed in a polygonal structure at an upper portion thereof for engagement with the ratchet wrench 5 and the screw socket 41, and in a column-like shape at a lower portion thereof for rotation engagement with the stopper 45. A bracket 44 is mounted on the second base plate 13, and the bracket 44 is used to control the movement of the polygon 43 in the vertical direction.

The bracket 44 is composed of a base 441, a claw 442, a pedal 443, a lever 444, a collar 445, and the like, the lever 444 is mounted on the base 441, both ends of the lever 444 are connected to the claw 442 and the pedal 443, respectively, and the collar 445 is mounted on the lower portion of the polygon prism 43 and connected to the claw 442. In practice, the pedal 443 is adopted to enable the claw button 442 to tilt, and the claw button 442 supports the collar 445 to enable the polygon 43 to move vertically. And the ratchet wrench 5 is provided at the upper end of the collar 445 so as to be movable together with the collar 445 in a meshing relationship with the polygon 43, and the handle of the ratchet wrench 5 extends from a position above the pedal 443 to the stand 1.

The fixing piece 4 is utilized to control the tightness nut 42, so that the problem that the ball pin of the swing arm assembly is firstly arranged on the ball head abrasion test seat 3 during fatigue test and then the ball head abrasion test seat 3 is arranged on the rack is solved, and the ball pin can be quickly detached and replaced under the condition that the ball head abrasion test seat 3 is not detached.

It will be appreciated by persons skilled in the art that the embodiments of the invention described above and shown in the drawings are by way of example only and are not limiting. The objects of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been shown and described in the examples and embodiments of the invention may be modified or practiced without departing from the principles described.

Claims

1. A fatigue test mechanism for the test of swing arm assembly, its characterized in that: the device comprises a bench (1) provided with a ball head abrasion test seat (3) and a loading mechanism (2) connected with the bench (1) and a swing arm assembly, wherein a ball head pin of the swing arm assembly is arranged on the ball head abrasion test seat (3), and the loading mechanism (2) is connected with the bench (1) along an X axis and a Y axis and is connected with the swing arm assembly along a Z axis for carrying out a swing arm fatigue test;

install mounting (4) on rack (1), it is used for with bulb round pin connection is fixed in bulb wear test seat (3) with the bulb round pin, install ratchet spanner (5) on mounting (4), ratchet spanner (5) are used for controlling mounting (4) in order to dismantle the bulb round pin when not demolishing bulb wear test seat (3).

2. A fatigue testing mechanism according to claim 1, wherein: the rack (1) comprises a platform (11), a first bottom plate (12) and a second bottom plate (13), wherein the first bottom plate (12) is connected with the second bottom plate (13) through an X-direction sliding rail structure (14), the platform (11) is connected with the first bottom plate (12) through a Y-direction sliding rail structure (15), the ball head abrasion testing seat (3) is arranged on the platform (11), and side walls (16) connected with the loading mechanism (2) in an X-axis and Y-axis are formed on the side edges of the platform (11).

3. A fatigue testing mechanism according to claim 2, wherein: the ball head abrasion testing device is characterized in that a through hole (18) is formed in the platform (11), a notch (17) which is open to one side is formed in the first bottom plate (12), the fixing piece (4) is arranged on the second bottom plate (13), the upper portion of the fixing piece (4) penetrates through the notch (17) and the through hole (18), and the upper portion of the fixing piece (4) is connected with a ball head pin on the ball head abrasion testing seat (3).

4. A fatigue testing mechanism according to claim 3, wherein: the ball head abrasion testing seat (3) is provided with an upper blind hole (31) and a lower blind hole (32), the upper blind hole (31) is communicated with the lower blind hole (32), the diameter of the lower blind hole (32) is larger than that of the upper blind hole (31), and the ball head pin penetrates into the lower blind hole (32) from the upper blind hole (31) to be connected with a fixing piece (4).

5. A fatigue testing mechanism according to claim 4, wherein: the fixing piece (4) comprises a threaded sleeve (41), the threaded sleeve (41) is connected to the through hole (18) through threads, a nut (42) is clamped at the upper end of the threaded sleeve (41), the nut (42) is fixedly connected with the ball stud through control of the threaded sleeve (41), a polygon prism (43) is arranged on the lower side of the threaded sleeve (41), the ratchet wrench (5) is installed on the polygon prism (43), and the polygon prism (43) is controlled by a bracket (44) to move vertically and can be meshed with the threaded sleeve (41).

6. A fatigue testing mechanism according to claim 5, wherein: the polygon prism (43) is installed in a limit sleeve (45) and moves vertically along the limit sleeve, and the limit sleeve (45) is fixed on the second bottom plate (13).

7. A fatigue testing mechanism according to claim 6, wherein: the bracket (44) comprises a base (441), a claw button (442) and a pedal (443), wherein a lever (444) is arranged on the base (441), one end of the lever (444) is connected with the claw button (442), the other end of the lever is connected with the pedal (443), and a lantern ring (445) connected with the claw button (442) is rotationally connected on the polygon prism (43).

8. A fatigue testing mechanism according to claim 7, wherein: the upper part of the polygon column (43) is constructed into a polygon structure for meshing with the ratchet wrench (5) and the thread sleeve (41), and the lower part is constructed into a column shape for rotating fit with the limit sleeve (45) and the collar (445).

9. A fatigue testing mechanism according to claim 8, wherein: the ratchet wrench (5) is positioned at the upper end of the lantern ring (445) and supported by the lantern ring (445) and can move vertically along with the polygon prism (43).

10. A fatigue testing mechanism according to claim 9, wherein: the side of the rack (1) is distributed with a counter-force frame (6), and the swing arm assembly and the loading mechanism (2) are arranged on the counter-force frame (6).