Life testing tool

Abstract

The utility model relates to a life test tool, which is used for clamping an electric slip ring, the electric slip ring comprises an inner shaft body, a first ring frame, a second ring frame and a supporting plate, the first ring frame and the second ring frame are supported on the outer peripheral surface of the inner shaft body through rolling bearings, and the supporting plate is fixedly connected between the first ring frame and the second ring frame. The service life testing tool comprises a stand column, a pressing plate and a limiting nail, the upper end of the stand column is fixedly connected with the upper base disc, the lower end of the stand column is fixedly connected with the lower base disc, the limiting nail is in threaded connection with the upper base disc, the limiting nail further penetrates through the pressing plate, and the first ring frame is clamped between the upper base disc and the pressing plate. By adopting the technical scheme provided by the utility model, when the service life of the electric slip ring is tested, the electric slip ring is reliably clamped and kept in a stable posture, and the inner shaft body rotates relative to the first ring frame, the second ring frame and the electric brush bundle, so that the service life data of the electric slip ring under the working condition is tested and obtained.

Description

TECHNICAL FIELD

[0001] The utility model belongs to life test tool technical field, especially relate to a life test tool. BACKGROUND

[0002] The slip ring is the electrical component responsible for connecting and transmitting energy and signals for the rotating body. According to the transmission medium, the slip ring is divided into electrical slip ring, fluid slip ring and optical slip ring, which can also be commonly referred to as "rotary connection" or "rotary connection". The slip ring is usually installed at the center of the rotating device and mainly consists of rotating and stationary parts. The rotating part is connected to the rotating structure of the device and rotates with it, called "rotor", and the stationary part is connected to the fixed structure of the device, called "stator". Among them, the electrical slip ring is widely used in various mechanical and electrical devices or mechanical and electrical systems. After the electrical slip ring is manufactured, the service life of the electrical slip ring needs to be tested.

[0003] For example, the patent document with publication number "CN115096691A" discloses a conductive slip ring wear life detection device, which includes a servo motor, a fixed rack and a rotating shaft. The rotating shaft is rotatably assembled in the fixed rack through a support bearing, and the servo motor is used to drive the rotating shaft. The rotating shaft is fixed with a conductive ring assembly to be detected, which includes a conductive ring and an insulating ring. The fixed rack is also fixed with a brush holder assembly to be detected on the upper side. The brush holder assembly is in contact with the conductive ring through the contact cantilever below the circuit board, and the contact pressure between at least two conductive rings and the contact cantilever is different. This patent technology simulates the actual installation and use conditions of the conductive slip ring, realizes the test of the wear performance between the conductive ring and the contact cantilever. However, the above-mentioned patent can only make the electrical slip ring run under one working condition. For a type of electrical slip ring that can run under multiple working conditions, the electrical slip ring often has multiple input terminals and multiple output terminals. Combining different input terminals and output terminals makes the electrical slip ring run under different state conditions. When testing the service life of this type of electrical slip ring, the service life of the electrical slip ring under various working conditions needs to be tested. UTILITY MODEL CONTENTS

[0004] To solve the above technical problems, the utility model provides a life test tool.

[0005] The utility model provides a life test frock, the life test frock is used for clamping electric slip ring, the electric slip ring includes inner shaft body, first ring stand, second ring stand and support plate, first ring stand and second ring stand all use rolling bearing to support on the outer circumferential surface of inner shaft body, support plate is fixedly connected between first ring stand and second ring stand, the life test frock includes stand, pressing plate and limit peg, the upper end of stand is fixedly connected with upper base disc, the lower end of stand is fixedly connected with lower base disc, limit peg is screwed with upper base disc, limit peg also penetrates pressing plate, and make first ring stand clamping between upper base disc and pressing plate.

[0006] The life test frock further comprises a locking sleeve, the locking sleeve is screwed with the limit peg, and the locking sleeve and the upper base disc are in close contact.

[0007] The limit peg can be replaced by a bolt, and the locking sleeve can be replaced by a hexagonal nut.

[0008] The number of the pressing plates is two, and the two pressing plates are arranged on the left and right sides of the electric slip ring.

[0009] The upper base disc, the stand and the lower base disc are integrally manufactured.

[0010] The life test frock further comprises a cover strip, the cover strip is fixedly connected with a positioning pin, the inner shaft body is provided with a corresponding pin hole, and the positioning pin is sleeved in the pin hole.

[0011] The electric slip ring further comprises a bearing cover, the first ring stand and the second ring stand are fixedly connected with the bearing cover, and the bearing cover is in close contact with the outer ring of the rolling bearing.

[0012] The electric slip ring further comprises a spacer strip, a plurality of conductive rings and a plurality of insulating rings, the spacer strip is fixedly connected to the outer circumferential surface of the inner shaft body, the conductive rings and the insulating rings are sleeved on the surface of the spacer strip alternately, the support plate is provided with a positioning hole, and the positioning hole is provided with a brush bundle.

[0013] The positioning hole is a waist-round through hole.

[0014] The cross section of the conductive ring is in the shape of "I" or "V".

[0015] The utility model discloses beneficial effect lies in: adopt the technical scheme provided by the utility model, when the service life of electric slip ring is tested, make it reliable clamping, keep steady posture, the relative rotation between inner shaft body and first ring stand, second ring stand, brush bundle, thereby test obtains the service life data of electric slip ring under this kind of working condition, in addition, because brush bundle is installed on the support plate through the waist round hole, and the test personnel can adjust the relative position between brush bundle and inner shaft body axial direction as required, thereby change the electrical connection between electric slip ring input terminal and output terminal, and then change the running condition of electric slip ring, finally test the service life of electric slip ring under various working conditions. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the axonometric drawing of the utility model;

[0017] Figure 2 It is the axonometric drawing of the electric slip ring of the utility model;

[0018] Figure 3 It is along Figure 2 It is the sectional view of the electric slip ring axial sectioning;

[0019] Figure 4 It is the axonometric explosion drawing of the service life test tool of the utility model;

[0020] Figure 5 It is the front view of the service life test tool of the utility model after removing the cover strip;

[0021] Figure 6 It is the plan view of the service life test tool of the utility model.

[0022] In the drawing: 1-electric slip ring, 2-inner shaft body, 3-first ring stand, 4-second ring stand, 5-support plate, 6-rolling bearing, 7-stand, 8-pressing plate, 9-limiting nail, 10-upper base disc, 11-lower base disc, 12-locking sleeve, 13-cover strip, 14-positioning pin, 15-pin hole, 16-convex handle, 17-bearing cover, 18-pad support strip, 19-conductive ring, 20-insulating ring, 21-brush bundle. DETAILED DESCRIPTION

[0023] The technical scheme of the utility model is further explained below in combination with the drawings, but the scope of protection required is not limited to the description;

[0024] The utility model provides a kind of service life test tool, such as Figures 1 to 6As shown, the life test tool is used for clamping the electric slip ring 1, the electric slip ring 1 comprises an inner shaft body 2, a first ring frame 3, a second ring frame 4 and a supporting plate 5, the first ring frame 3 and the second ring frame 4 are both supported on the outer circumferential surface of the inner shaft body 2 by using rolling bearings 6, the supporting plate 5 is fixedly connected between the first ring frame 3 and the second ring frame 4, the life test tool comprises a column 7, a pressing plate 8 and a limiting pin 9, the upper end of the column 7 is fixedly connected with an upper base disc 10, the lower end of the column 7 is fixedly connected with a lower base disc 11, the limiting pin 9 is screwed with the upper base disc 10, the limiting pin 9 also penetrates through the pressing plate 8, and the first ring frame 3 is clamped between the upper base disc 10 and the pressing plate 8.

[0025] The technical scheme provided by the utility model can reliably clamp the electric slip ring when testing the service life of the electric slip ring, keep a stable posture, produce relative rotation between the inner shaft body and the first ring frame, the second ring frame and the brush bundle, thereby testing and obtaining the service life data of the electric slip ring under this kind of working condition, in addition, the brush bundle is installed on the supporting plate through the waist round shaped through hole, the tester can adjust the relative position between the brush bundle and the inner shaft body in the axial direction as needed, thereby changing the electrical connection between the input terminal and the output terminal of the electric slip ring, then changing the running working condition of the electric slip ring, and finally testing the service life of the electric slip ring under various working conditions.

[0026] Specifically, the life test tool further comprises a locking sleeve 12, the locking sleeve 12 is screwed with the limiting pin 9, and the locking sleeve 12 is in close contact with the upper base disc 10. Preferably, the limiting pin 9 can be replaced by a bolt, and the locking sleeve 12 can be replaced by a hexagonal nut. The number of the pressing plates 8 is two, and the two pressing plates 8 are arranged on the left and right sides of the electric slip ring 1. The upper base disc 10, the column 7 and the lower base disc 11 are integrally manufactured. When the locking sleeve 12 is in close contact with the upper base disc 10, the whole electric slip ring keeps a stable positioning posture, which facilitates the tester to test the service life data of the electric slip ring.

[0027] In addition, the life test tool further comprises a cover strip 13, the cover strip 13 is fixedly connected with a positioning pin 14, the surface of the inner shaft body 2 is provided with a corresponding pin hole 15, and the positioning pin 14 is fitted into the pin hole 15. Preferably, the pin hole 15 is a waist round shaped blind hole, and the length direction of the pin hole 15 is arc-shaped. The cover strip 13 is further fixedly connected with a convex handle 16.

[0028] In addition, the electric slip ring 1 further comprises a bearing cover 17, the first ring frame 3 and the second ring frame 4 are respectively fixedly connected with the bearing cover 17, and the bearing cover 17 is in close contact with the outer ring of the rolling bearing 6.

[0029] Specifically, the electric slip ring 1 further comprises a spacer 18, a plurality of conductive rings 19 and a plurality of insulating rings 20, the spacer 18 is fixedly connected to the outer circumferential surface of the inner shaft body 2, the conductive rings 19 and the insulating rings 20 are sleeved on the surface of the spacer 18 alternately, the supporting plate 5 is provided with positioning holes, and the electric brush bundle 21 is arranged in the positioning holes. Preferably, the positioning holes are waist-round through holes. Thus, the test personnel can conveniently adjust the operation condition of the electric slip ring, and finally test the service life of the electric slip ring under various working conditions. The cross section of the conductive ring 19 is in the shape of "I" or "V". The number of the supporting plates 5 is two, and the shape of the supporting plate 5 is "J".

Claims

1. A life test fixture, characterized by: The life testing fixture is used to clamp an electric slip ring (1). The electric slip ring (1) includes an inner shaft (2), a first ring frame (3), a second ring frame (4), and a support plate (5). The first ring frame (3) and the second ring frame (4) are both supported on the outer circumferential surface of the inner shaft (2) by rolling bearings (6). The support plate (5) is fixed between the first ring frame (3) and the second ring frame (4). The life testing fixture includes a column (7), a pressure plate (8), and a limiting pin (9). The upper end of the column (7) is fixed to the upper base plate (10), and the lower end of the column (7) is fixed to the lower base plate (11). The limiting pin (9) is screwed to the upper base plate (10). The limiting pin (9) also penetrates the pressure plate (8) and clamps the first ring frame (3) between the upper base plate (10) and the pressure plate (8).

2. A life testing fixture as claimed in claim 1, wherein: The life test fixture also includes a locking sleeve (12), which is screwed to the limiting pin (9) and the locking sleeve (12) is attached to the upper base plate (10).

3. A life testing fixture as claimed in claim 2, wherein: The limiting pin (9) can be replaced by a bolt, and the locking sleeve (12) can be replaced by a hexagonal nut.

4. A life testing fixture as claimed in claim 1, wherein: The number of pressure plates (8) is 2, and the 2 pressure plates (8) are arranged on the left and right sides of the electric slip ring (1).

5. A life testing fixture as claimed in claim 1, wherein: The upper base plate (10), column (7) and lower base plate (11) are manufactured as a single unit.

6. A life testing fixture as claimed in claim 1, wherein: The life test fixture also includes a cover strip (13), which is fixedly connected to a positioning pin (14). The surface of the inner shaft (2) is provided with a corresponding pin hole (15), and the positioning pin (14) is fitted into the pin hole (15).

7. A life testing fixture as claimed in claim 1, wherein: The electric slip ring (1) also includes a bearing cover (17), the first ring frame (3) and the second ring frame (4) are fixedly connected to the bearing cover (17), and the bearing cover (17) is in contact with the outer ring of the rolling bearing (6).

8. A life testing fixture as claimed in claim 1, wherein: The slip ring (1) also includes a support strip (18), a number of conductive rings (19) and a number of insulating rings (20). The support strip (18) is fixed to the outer circumferential surface of the inner shaft (2). The conductive rings (19) and insulating rings (20) are alternately fitted on the surface of the support strip (18). The support plate (5) is provided with positioning holes, and the positioning holes are provided with brush bundles (21).

9. A life testing fixture as claimed in claim 8, wherein: The positioning hole is an oval through hole.

10. A life testing fixture as claimed in claim 8, wherein: The cross-section of the conductive ring (19) is either in the shape of an "I" or a "V".

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