Friction test equipment for service life of conductive rolling ring contact pin

Abstract

The invention discloses conductive rolling ring contact pin service life friction test equipment, which comprises a bottom plate, and a back plate and two groups of symmetrical carrier plates are fixed on the plate surface of the bottom plate; the two sliding rods are symmetrically connected between the two groups of carrier plates; the abrasion testing mechanism is in sliding connection with the two sliding rods in a matched mode, and the abrasion testing mechanism is driven by a first electric cylinder fixed to the rear back plate to slide; the rotating disc is rotatably mounted on the bottom plate and is driven to rotate by a motor I mounted on the bottom surface of the bottom plate; and the plurality of sockets are installed on the top surface of the rotating disc in a circumferential array mode, and each socket is internally provided with a clamping mechanism used for clamping and fixing a contact pin. According to the invention, the adjustable wear test mechanism is arranged, the radial contact pressure borne by the contact pin in actual work can be truly simulated, the pressure value can be continuously and accurately set and controlled within a certain range, and key and repeatable load conditions are provided for life test.

Description

Technical Field

[0001] The invention relates specifically to the technical field of production of conductive rolling rings, in particular to a conductive rolling ring contact pin life friction test device. Background Art

[0002] As a key component in the rotary connection system, the core performance of the conductive roller ring depends on the stable, low-wear sliding electrical contact between the stylus and the conductive ring. In actual work, the stylus is subjected to long-term radial contact pressure and gradually wears out under high-speed rotation friction. Its life directly determines the overall reliability of the conductive roller ring. Therefore, the development of stylus life friction testing equipment that can accurately simulate actual working conditions is crucial for stylus material selection, structural design optimization and product quality control.

[0003] Existing friction testing equipment has the following drawbacks when used: there is a lack of an effective mechanism for continuous and precise adjustment of the radial pressure applied to the stylus, and it is impossible to conveniently set and maintain different target pressure values ​​for comparative tests, which limits the systematic study of the impact of different loads on the stylus life. Summary of the Invention

[0004] To this end, the present invention proposes a conductive rolling ring stylus life friction testing device to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a conductive rolling ring stylus life friction test device, comprising:

[0006] A bottom plate, on which a back plate and two sets of symmetrical carrier plates are fixed;

[0007] Two slide bars are provided and symmetrically connected between the two sets of carrier plates;

[0008] A wear testing mechanism, which is in sliding contact with the two slide bars and is driven to slide by an electric cylinder fixed to the back plate;

[0009] A rotating disk is rotatably mounted on the base plate and driven to rotate by a motor mounted on the bottom surface of the base plate;

[0010] And a plurality of sockets are provided and are installed in a circumferential array on the top surface of the rotating disk, and each of the sockets is provided with a clamping mechanism for clamping the contact pin.

[0011] Furthermore, preferably, the wear testing mechanism includes:

[0012] Slide seat 1 is matched and slidably connected to the two slide rods, and electric cylinder 4 is installed on the slide seat 1;

[0013] A motor base, which is driven by electric cylinder 4 and in which motor 2 is installed;

[0014] The upper cylinder is driven by motor 2;

[0015] and a lower cylinder, which is fixedly connected to the upper cylinder; an adjustable friction mechanism is installed in the space formed by the combination of the upper cylinder and the lower cylinder.

[0016] Furthermore, preferably, the side wall of the lower cylinder has a plurality of notches arranged in a circumferential array therethrough.

[0017] Further, preferably, the adjustable friction mechanism includes:

[0018] a cylinder seat, which is fixed in the upper cylinder;

[0019] The third electric cylinder is mounted on the cylinder base, and the driving end of the third electric cylinder is connected to the pressure head located below the cylinder base;

[0020] And a plurality of friction parts are provided and are installed in a circumferential array on the inner wall of the upper cylinder, and the bottom of each friction part extends into the lower cylinder.

[0021] Furthermore, preferably, the friction member includes:

[0022] The outer cylinder has a sliding cavity provided therein, and a sliding ring is provided in the sliding cavity for matching sliding.

[0023] a pressure ball fixed to the right end of the outer cylinder;

[0024] a friction plate fixed to the bottom wall of the outer cylinder;

[0025] An inner rod, one end of which is fixedly connected to the slip ring, and the other end of which passes through the left port of the outer cylinder and is fixedly connected to the inner wall of the upper cylinder;

[0026] and a spring connected between the sliding ring and the left side wall of the sliding cavity, and the spring is wound around the side wall of the inner rod.

[0027] Furthermore, preferably, the pressure head adopts an inverted frustum structure, and the side wall of the pressure head is set to a smooth surface.

[0028] Furthermore, preferably, the inner side wall of the friction plate is configured as a curved surface.

[0029] Furthermore, as a preference, it further comprises a wear scanning mechanism, which is arranged in the long groove of the bottom plate and is driven to move by the driving mechanism to scan and detect the surface of the stylus after the friction test.

[0030] Furthermore, preferably, the driving mechanism includes:

[0031] Two fixing plates are provided and fixed to the bottom surface of the base plate at intervals;

[0032] a sliding strut connected between the two fixed plates;

[0033] Slide 2, which is matched and slidably connected to the slide post, and a wear scanning mechanism is fixed on the slide 2;

[0034] And the second electric cylinder has a fixed end fixed on the second slide, and the fixed end of the second electric cylinder is fixedly connected to a fixed plate located on the right side.

[0035] The present invention utilizes the above technology and has the following advantages compared to existing technologies: The present invention is provided with an adjustable wear testing mechanism. Electric cylinder three drives a conical indenter downward. The smooth conical surface of the indenter acts on the pressure balls of multiple circumferentially distributed friction members. When the indenter is pressed downward, the conical surface transmits radial force to the pressure balls and outer cylinder, overcoming the resistance of the spring and pushing the friction plate radially inward, thereby applying radial pressure to the central stylus. The stroke of electric cylinder three precisely controls the depth of the indenter's depression, and thus precisely controls the radial pressure applied to the stylus, thereby realistically simulating the radial contact pressure experienced by the stylus in actual operation. Furthermore, this pressure value can be continuously and precisely set and controlled within a certain range, providing critical and repeatable load conditions for life testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A schematic diagram of the three-dimensional structure of a conductive rolling ring stylus life friction test device Figure 1 ;

[0037] Figure 2 A schematic diagram of the three-dimensional structure of a conductive rolling ring stylus life friction test device Figure 2 ;

[0038] Figure 3 This is a schematic diagram of the structure of a wear test mechanism in a conductive rolling ring stylus life friction test device;

[0039] Figure 4 A schematic diagram of the structure of an adjustable friction mechanism in a conductive rolling ring stylus life friction test device;

[0040] Figure 5 This is a schematic diagram of the internal structure of the friction parts in a conductive rolling ring stylus life friction test device.

[0041] In the figure: 1. Back plate; 2. Carrier plate; 3. Electric cylinder 1; 4. Slide rod; 5. Wear test mechanism; 6. Rotating disk; 7. Socket; 8. Motor 1; 9. Bottom plate; 10. Electric cylinder 2; 11. Slide seat 2; 12. Fixed plate; 501. Slide seat 1; 502. Electric cylinder 4; 503. Upper cylinder; 504. Lower cylinder; 505. Cylinder seat; 506. Electric cylinder 3; 507. Pressure head; 508. Friction plate; 509. Inner rod; 510. Spring; 511. Slip ring; 512. Outer cylinder; 513. Pressure ball. DETAILED DESCRIPTION

[0042] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments 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.

[0043] Example: Please see the attached Figure 1-5 The present invention provides a technical solution: a conductive rolling ring stylus life friction test device, which includes:

[0044] The bottom plate 9 has a back plate 1 and two sets of symmetrical carrier plates 2 fixed on its surface;

[0045] Two slide bars 4 are provided and symmetrically connected between the two sets of carrier plates 2;

[0046] The wear testing mechanism 5 is slidably connected with the two slide bars 4, and the wear testing mechanism 5 is driven to slide by the electric cylinder 3 fixed to the back plate 1;

[0047] Specifically, the electric cylinder drives the entire wear test mechanism to move along the slide bar so that it can accurately align with the stylus currently located at the test position on the rotating disk.

[0048] The rotating disk 6 is rotatably mounted on the base plate 9 and is driven to rotate by a motor 8 mounted on the bottom surface of the base plate 9;

[0049] and sockets 7, which are provided in plurality and are mounted in a circumferential array on the top surface of the rotating disk 6, each socket 7 being provided with a clamping mechanism for clamping a contact pin;

[0050] Specifically, the multiple sockets in the circular array on the rotating disk can clamp multiple stylus pins to be tested at the same time. When the motor drives the rotating disk to rotate, different stylus pins can be sent to the test station in sequence and accurately, which greatly reduces the time for manual sample replacement, realizes unmanned continuous batch testing, and significantly improves test efficiency and data output.

[0051] In this embodiment, the wear testing mechanism 5 includes:

[0052] Slide 1 501 is matched and slidably connected to the two slide bars 4, and an electric cylinder 4 502 is installed on the slide 1 501;

[0053] The motor base is driven by the electric cylinder 4 502, and the motor 2 is installed in the motor base;

[0054] Upper cylinder 503, which is driven by motor 2;

[0055] and a lower cylinder 504, which is fixedly connected to the upper cylinder 503, wherein an adjustable friction mechanism is installed in the space formed by the combination of the upper cylinder 503 and the lower cylinder 504;

[0056] Specifically,.

[0057] In this embodiment, a plurality of slots are provided in a circumferential array on the side wall of the lower cylinder 504 .

[0058] In this embodiment, the adjustable friction mechanism includes:

[0059] Cylinder base 505, which is fixed in the upper cylinder 503;

[0060] The third electric cylinder 506 is mounted on the cylinder base 505 , and the driving end of the third electric cylinder 506 is connected to the pressure head 507 located below the cylinder base 505 ;

[0061] And there are multiple friction members, which are installed in a circular array on the inner wall of the upper cylinder 503, and the bottom of each friction member extends into the lower cylinder 504.

[0062] In this embodiment, the friction member includes:

[0063] The outer cylinder 512 has a sliding cavity therein, and a sliding ring 511 is slidingly arranged in the sliding cavity;

[0064] A pressure ball 513 fixed to the right end of the outer cylinder 512;

[0065] a friction plate 508 fixed to the bottom wall of the outer cylinder 512;

[0066] One end of the inner rod 509 is fixedly connected to the slip ring 511, and the other end of the inner rod 509 passes through the left port of the outer cylinder 512 and is fixedly connected to the inner wall of the upper cylinder 503;

[0067] and a spring 510 connected between the sliding ring 511 and the left side wall of the sliding cavity, and the spring 510 is wound around the side wall of the inner rod 509;

[0068] Specifically, motor 2 drives the upper cylinder and the lower cylinder (including the entire friction mechanism) to rotate, while the stylus is kept stationary by the clamping mechanism, which simulates the relative motion state of the actual conductive rolling ring, where the stylus is fixed and the conductive ring rotates.

[0069] In this embodiment, the pressure head 507 adopts an inverted frustum structure, and the side wall of the pressure head 507 is set to a smooth surface;

[0070] Specifically, electric cylinder three drives the conical indenter to press down, and the smooth conical surface of the indenter acts on the pressure balls of multiple circumferentially distributed friction parts. When the indenter is pressed down, the conical surface transmits radial force to the pressure balls and the outer cylinder, overcoming the resistance of the spring and pushing the friction plate to move radially inward, thereby applying radial pressure to the central stylus. The stroke of electric cylinder three accurately controls the depth of the indenter's pressure, and then accurately controls the radial pressure (normal load) applied to the stylus, so as to truly simulate the radial contact pressure that the stylus is subjected to in actual work. Moreover, the pressure value can be continuously and accurately set and controlled within a certain range, providing critical and repeatable load conditions for life testing.

[0071] In this embodiment, the inner side wall of the friction plate 508 is set to an arc surface. The inner arc surface design of the friction plate can better fit the curved surface of the stylus, simulating the contact form between the stylus and the conductive ring / track in an actual conductive rolling ring.

[0072] In this embodiment, a wear scanning mechanism is further included, which is disposed in the long groove of the bottom plate 9 and is driven to move by the driving mechanism to scan and detect the surface of the stylus after the friction test.

[0073] In this embodiment, the driving mechanism includes:

[0074] Two fixing plates 12 are provided and fixed to the bottom surface of the bottom plate 9 at intervals;

[0075] a sliding column connected between the two fixing plates 12;

[0076] Slide 2 11 is matched and slidably connected to the slide column, and a wear scanning mechanism is fixed on the slide 2 11;

[0077] And the second electric cylinder 10, whose fixed end is fixed on the second slide 11, and the fixed end of the second electric cylinder 10 is fixedly connected to a fixed plate 12 located on the right side;

[0078] Specifically, quantitative detection of wear amount (such as wear mark width and depth) or surface morphology can be performed immediately during the test interval or after the test without removing the stylus, realizing the integration of testing and detection, improving data acquisition efficiency and accuracy, and facilitating real-time monitoring of the wear process.

[0079] While embodiments of the present invention have been shown and described, it will be appreciated 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 invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A conductive rolling ring stylus life friction test device, characterized in that: It includes: A bottom plate (9) having a back plate (1) and two sets of symmetrical carrier plates (2) fixed on its surface; Two slide bars (4) are provided and symmetrically connected between the two sets of carrier plates (2); A wear testing mechanism (5) is slidably connected with the two slide bars (4), and the wear testing mechanism (5) is driven to slide by an electric cylinder (3) fixed on the back plate (1); A rotating disk (6) is rotatably mounted on a base plate (9) and is driven to rotate by a motor (8) mounted on the bottom surface of the base plate (9); And a plurality of sockets (7) are provided and are mounted in a circumferential array on the top surface of the rotating disk (6), and a clamping mechanism for clamping a contact pin is provided in each of the sockets (7).

2. The conductive rolling ring stylus life friction test device according to claim 1, characterized in that: The wear testing mechanism (5) comprises: Slide seat 1 (501) is matched and slidably connected to the two slide bars (4), and electric cylinder 4 (502) is installed on the slide seat 1 (501); A motor base, which is driven by electric cylinder four (502), and in which motor two is installed; The upper cylinder (503) is driven by the second motor; and a lower cylinder (504) fixedly connected to the upper cylinder (503), wherein an adjustable friction mechanism is installed in a space formed by the combination of the upper cylinder (503) and the lower cylinder (504).

3. The conductive rolling ring stylus life friction test device according to claim 2, characterized in that: The side wall of the lower cylinder (504) has a plurality of slots arranged in a circumferential array therethrough.

4. The conductive rolling ring stylus life friction test device according to claim 3, characterized in that: The adjustable friction mechanism comprises: A cylinder base (505) is fixed in the upper cylinder (503); Electric cylinder three (506), which is installed on the cylinder base (505), and the driving end of the electric cylinder three (506) is driven and connected to the pressure head (507) located below the cylinder base (505); And a plurality of friction members are provided and are mounted in a circumferential array on the inner wall of the upper cylinder (503), and the bottom of each friction member extends into the lower cylinder (504).

5. The conductive rolling ring stylus life friction testing device according to claim 4, characterized in that: The friction member comprises: An outer cylinder (512) is provided with a sliding cavity therein, and a sliding ring (511) is provided in the sliding cavity for matching sliding. A pressure ball (513) fixed to the right end of the outer cylinder (512); a friction plate (508) fixed to the bottom wall of the outer cylinder (512); An inner rod (509), one end of which is fixedly connected to the slip ring (511), and the other end of the inner rod (509) passes through the left port of the outer cylinder (512) and is fixedly connected to the inner wall of the upper cylinder (503); and a spring (510) connected between the slip ring (511) and the left side wall of the sliding cavity, and the spring (510) is wound around the side wall of the inner rod (509).

6. The conductive rolling ring stylus life friction test device according to claim 5, characterized in that: The pressure head (507) adopts an inverted frustum structure, and the side wall of the pressure head (507) is configured as a smooth surface.

7. The conductive rolling ring stylus life friction testing device according to claim 5, characterized in that: The inner side wall of the friction plate (508) is configured as a curved surface.

8. The conductive rolling ring stylus life friction testing device according to claim 1, characterized in that: It also includes a wear scanning mechanism, which is arranged in the long groove of the base plate (9) and is driven to move by the driving mechanism to scan and detect the surface of the stylus after the friction test.

9. The conductive rolling ring stylus life friction testing device according to claim 8, characterized in that: The driving mechanism comprises: Two fixing plates (12) are provided and fixed to the bottom surface of the bottom plate (9) at intervals; A sliding column connected between two fixed plates (12); Slide seat 2 (11), which is matched and slidably connected to the slide post, and a wear scanning mechanism is fixed on the slide seat 2 (11); And electric cylinder 2 (10), the fixed end of which is fixed on slide 2 (11), and the fixed end of electric cylinder 2 (10) is fixedly connected to a fixed plate (12) located on the right side.

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