Friction device and power transmission test equipment

Abstract

A friction device and power transmission test equipment are arranged on a working platform and comprise a speed reducer, a power transmission mechanism, a transition piece, a sliding friction mechanism and a swing friction mechanism. The power output end of the speed reducer is connected with the transition piece through a power transmission mechanism, and the transition piece is driven by the speed reducer to reciprocate. The power output end of the transition piece is connected with a sliding friction mechanism and a swinging friction mechanism; the sliding friction mechanism comprises a sliding connecting rod and a supporting frame, one end of the sliding connecting rod is connected with the transition piece, the other end of the sliding connecting rod faces the supporting frame, and the transition piece drives the sliding connecting rod to reciprocate in the direction close to the supporting frame and away from the supporting frame. The swing friction mechanism comprises a swing connecting rod and a working support, one end of the swing connecting rod is hinged to the transition piece, the other end of the swing connecting rod faces the working support, and the transition piece drives the swing connecting rod to swing towards the working support. Through the structure, the friction device and the power transmission test equipment which are accurate in action, stable in movement and wide in applicability are provided.

Description

Technical Field

[0001] The present invention relates to the technical field of high-voltage switch power transmission equipment, and in particular to a friction device and power transmission test equipment. Background Art

[0002] In recent years, several cases have occurred where poor contact between GIS busbar contacts and the contact finger holders has caused prolonged localized heating, leading to contact finger fractures and burnt materials falling onto the tank wall, causing electrical discharges. To verify whether the poor contact is caused by inadequate installation workmanship or prolonged relative motion due to component design, structure, or manufacturing quality, the contact and finger holders must be subjected to repeated a specified number of motions to verify their compliance. Currently, manual manipulation is commonly used, involving rubbing the contacts and finger holders together and then measuring the product parameters after the friction. However, due to the low standard, poor stability, and high labor intensity of manual manipulation, the accuracy and stability of the test cannot be guaranteed. Summary of the Invention

[0003] The purpose of the present invention is to provide a friction device and power transmission test equipment that can realize the reciprocating friction movement of busbar contacts of various structures and contact finger seats, ensure accurate and stable operation, and meet the requirements of physical operation operation assessment of design structure and process quality.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a friction device, which is arranged on a working platform, includes a reducer, a power transmission mechanism, a transition piece, a sliding friction mechanism and a swinging friction mechanism; the power output end of the reducer is connected to the transition piece through the power transmission mechanism, and the transition piece is driven by the reducer to reciprocate in the direction of approaching or moving away from the sliding friction mechanism; the power output end of the transition piece is connected with the sliding friction mechanism and the swinging friction mechanism; the sliding friction mechanism includes a sliding link and a support frame, one end of the sliding link is connected to the transition piece, and the other end of the sliding link faces the support frame, and the transition piece drives the sliding link to reciprocate in the direction of approaching and moving away from the support frame; the swinging friction mechanism includes a swinging link and a working bracket, one end of the swinging link is hinged to the transition piece, and the other end of the swinging link faces the working bracket, and the transition piece drives the swinging link to swing toward the working bracket.

[0005] The power transmission mechanism includes an eccentric flange and a transmission connecting rod; the power output end of the reducer is connected to the eccentric flange, the power output end of the eccentric flange is connected to one end of the transmission connecting rod, and the other end of the transmission connecting rod is connected to the transition piece.

[0006] One side of the eccentric flange is connected to the power output end of the reducer, and the eccentric flange is driven to rotate through the reducer; on the other side of the eccentric flange, a locating pin is provided at the eccentric position; the locating pin passes through the locating hole at one end of the transmission connecting rod to connect one end of the transmission connecting rod with the eccentric flange; the locating hole at the other end of the transmission connecting rod is connected to the transition piece through another locating pin.

[0007] An included angle is formed between the transmission connecting rod and the swing connecting rod, and the included angle is 75°-105°.

[0008] The transition piece is provided with two upper and lower mounting plates on the side away from the transmission connecting rod, and a through hole is provided at one end of the swing connecting rod. The pin passes through the mounting plate of the transition piece and the through hole of the swing connecting rod, and the swing connecting rod is hinged between the upper and lower mounting plates of the transition piece.

[0009] The bottom of the transition piece is installed on the platform through a slide rail, and the transition piece can do reciprocating motion along the length direction of the slide rail.

[0010] The lower part of the transition piece is a slide groove that cooperates with the slide rail. A bottom plate is installed on the slide groove, and a vertical upright plate and ear plate are provided on the bottom plate; the transmission connecting rod is connected to the ear plate; the upright plate is connected to the sliding friction mechanism and the swinging friction mechanism.

[0011] An adjustment block is provided between the bottom surface of the support frame and the working platform, and the upper surface of the adjustment block is an inclined surface.

[0012] The power transmission test equipment includes the friction device: the sliding connecting rod of the sliding friction mechanism is detachably mounted with a product contact at one end facing the support frame, and the support frame is detachably mounted with a product contact finger seat, the product contact corresponds to the position of the product contact finger seat, and the sliding connecting rod drives the product contact to slide in the product contact finger seat.

[0013] The power transmission test equipment includes the friction device: the product contact is detachably mounted on one end of the swing connecting rod of the swing friction mechanism facing the working bracket, and the product contact finger seat is detachably mounted on the working bracket. The product contact is inserted into the product contact finger seat, and the transition piece drives the swing connecting rod to swing, and the product contact performs reciprocating angular swing motion in the product contact finger seat.

[0014] The beneficial effects of the present invention are:

[0015] This invention uses a single reducer to simultaneously drive the sliding and swinging friction mechanisms in a friction device, allowing for simultaneous sliding and swinging friction testing. Through mechanical transmission, accurate and stable motion is ensured. The device can quickly replicate the actual motion of the contactor and finger holder, meeting the need for physical motion assessment of design structure and process quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1: Stereoscopic diagram of power transmission test equipment;

[0017] Figure 2 : A three-dimensional view of the power transmission test equipment from another angle;

[0018] Figure 3 : Assembly diagram of the adjustment block. DETAILED DESCRIPTION

[0019] 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.

[0020] By those skilled in the art, the components in this case are connected in sequence. The specific connection and operation sequence should refer to the following working principle. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process.

[0021] Example 1:

[0022] A friction device is arranged on a working platform 1, comprising a reducer 2, a power transmission mechanism, a transition piece 5, a sliding friction mechanism and a swinging friction mechanism; the power output end of the reducer 2 is connected to the transition piece 5 through the power transmission mechanism, and the transition piece 5 is driven to reciprocate through the reducer 2.

[0023] Specifically, the power transmission mechanism includes an eccentric flange 3 and a transmission connecting rod 4 .

[0024] One side of the eccentric flange 3 is connected to the power output of the reducer 2, and the reducer 2 drives the eccentric flange 3 to rotate. On the other side of the eccentric flange 3, a locating pin is provided at an eccentric position. The locating pin passes through a locating hole at one end of the transmission connecting rod 4, connecting the transmission connecting rod 4 to the eccentric flange 3. The locating hole at the other end of the transmission connecting rod 4 is connected to the transition piece 5 via another locating pin.

[0025] Therefore, when the power output end of the reducer 2 rotates, it drives the eccentric flange 3 to rotate. The positioning pins on the eccentric flange 3 exert push-pull forces on the transmission connecting rod 4, which in turn exert push-pull forces on the transition piece 5. The bottom of the transition piece 5 is attached to the platform 1 via a slide rail 9. The slide rail 9 restricts the movement direction of the transition piece 5, ultimately converting the rotational motion output by the reducer 2 into linear motion.

[0026] The lower part of the transition piece 5 is a slide groove 5-1 that cooperates with the slide rail 9. A bottom plate 5-2 is installed on the slide groove 5-1, and a vertical stand plate 5-4 and an ear plate 5-3 are provided on the bottom plate 5-2.

[0027] One end of the transmission connecting rod 4 is connected to the eccentric flange 3, and the other end is connected to the ear plate 5-3; the vertical plate 5-4 is connected to the sliding friction mechanism and the swinging friction mechanism.

[0028] There are two ear plates 5-3, which are arranged at both ends of the vertical plate 5-4. The two ear plates 5-3 are parallel to each other, and the vertical plate 5-4 and the ear plates 5-3 are perpendicular to each other and are connected by welding. While providing installation positions for other devices, the vertical plate 5-4 and the ear plates 5-3 also form a mutual support structure, thereby improving the overall stability of the transition piece 5.

[0029] The power output end of the transition piece 5 is connected to a sliding friction mechanism and a swing friction mechanism.

[0030] The sliding friction mechanism includes a sliding link 10 and a support frame 6. One end of the sliding link 10 is connected to the transition piece 5, and the other end of the sliding link 10 faces the support frame 6. The transition piece 5 drives the sliding link 10 to reciprocate in the direction close to the support frame 6 and away from the support frame 6.

[0031] The swinging friction mechanism includes a swinging link 8 and a working bracket 7. The transition piece 5 is provided with an upper and lower mounting plates on the side away from the transmission link 4. A through hole is provided at one end of the swinging link 8. The pin passes through the mounting plate of the transition piece 5 and the through hole of the swinging link 8, and the swinging link 8 is hinged between the upper and lower mounting plates of the transition piece 5. The other end of the swinging link 8 is inserted into the working bracket 7 and is clearance-matched with the working bracket 7. The transition piece 5 drives one end of the swinging link 8 to reciprocate, thereby making the swinging link 8 swing in the working bracket 7 along the movement direction of the transition piece 5 with the insertion point of the working bracket 7 as the center.

[0032] Preferably, an included angle is formed between the transmission link 4 and the swing link 8, and the included angle is 75°-105°. Limiting the swing angle can better ensure the stability and friction effect of friction.

[0033] Example 2:

[0034] like Figure 1-2 As shown, the power transmission test equipment includes a friction device, and a product contact 11 is detachably mounted on one end of the sliding link 10 of the sliding friction mechanism toward the support frame 6, and a product contact finger seat 12 is detachably mounted on the support frame 6. The product contact 11 corresponds to the product contact finger seat 12 in position, and the product contact 11 is driven by the sliding link 10 to reciprocate in the product contact finger seat 12.

[0035] A product contact 11 is detachably mounted on one end of the swing link 8 of the swing friction mechanism facing the working bracket 7, and a product contact finger seat 12 is detachably mounted on the working bracket 7. The product contact 11 is inserted into the product contact finger seat 12, and the transition piece 5 drives the swing link 8 to swing, and the product contact 11 performs reciprocating angular swing motion in the product contact finger seat 12.

[0036] When in use, the support frame 6 and the working bracket 7 are installed on the working platform 1, and then the reducer 2 is assembled to the working platform 1. The reducer 2 is started to drive the eccentric flange 3 and the transmission connecting rod 4 to reciprocate, and the transition piece 5 and the slide rail 9 cooperate to complete the linear output of the transition piece 5.

[0037] The transition piece 5 simultaneously drives the sliding link 10 of the sliding friction mechanism and the swinging link 8 of the swinging friction mechanism to perform linear and swinging motions respectively. As a result, the product contact 11 and the product contact finger seat 12 installed on the sliding link 10 and the support frame 6 complete the friction test, and the product contact 11 and the product contact finger seat 12 installed on the swinging link 8 and the working bracket 7 complete the reciprocating angular motion experiment.

[0038] like Figure 3 As shown, an adjustment block 13 is placed between the bottom surface of the support frame 6 and the work platform 1. The upper surface of the adjustment block 13 is an inclined surface, which is used to tilt the support frame 6. The angle and direction of the inclined surface of the adjustment block are not critical. As long as the support frame 6 is tilted, an angle difference is formed between the product contact 11 and the product contact finger seat 12 during the sliding friction process, resulting in uneven force on the friction surface, thereby simulating the operating state of the product under the worst operating conditions.

Claims

1. A friction device, arranged on a working platform (1), characterized in that: The invention comprises a reducer (2), a power transmission mechanism, a transition piece (5), a sliding friction mechanism and a swinging friction mechanism; the power output end of the reducer (2) is connected to the transition piece (5) through the power transmission mechanism, the power output end of the transition piece (5) is connected to the sliding friction mechanism and the swinging friction mechanism, and the reducer (2) drives the transition piece (5) to reciprocate in a direction close to or away from the sliding friction mechanism; the sliding friction mechanism comprises a sliding link (10) and a support frame (6), one end of the sliding link (10) is connected to the transition piece (5), the other end of the sliding link (10) faces the support frame (6), and the transition piece (5) drives the sliding link (10) to reciprocate in a direction close to the support frame (6) and away from the support frame (6); the swinging friction mechanism comprises a swinging link (8) and a working support (7), one end of the swinging link (8) is hinged to the transition piece (5), the other end of the swinging link (8) faces the working support (7), and the transition piece (5) drives the swinging link (8) to swing toward the working support (7).

2. A friction device according to claim 1, characterized in that: The power transmission mechanism comprises an eccentric flange (3) and a transmission connecting rod (4); the power output end of the reducer (2) is connected to the eccentric flange (3), the power output end of the eccentric flange (3) is connected to one end of the transmission connecting rod (4), and the other end of the transmission connecting rod (4) is connected to the transition piece (5).

3. A friction device according to claim 2, characterized in that: One side of the eccentric flange (3) is connected to the power output end of the reducer (2), and the eccentric flange (3) is driven to rotate through the reducer (2); a positioning pin is provided at an eccentric position on the other side of the eccentric flange (3); the positioning pin passes through a positioning hole at one end of a transmission connecting rod (4), connecting the one end of the transmission connecting rod (4) to the eccentric flange (3); the positioning hole at the other end of the transmission connecting rod (4) is connected to a transition piece (5) through another positioning pin.

4. A friction device according to claim 2, characterized in that: An included angle is formed between the transmission connecting rod (4) and the swing connecting rod (8), and the included angle is 75°-105°.

5. The friction device according to claim 1, characterized in that: A transition piece (5) is provided with an upper and lower mounting plates on a side away from the transmission connecting rod (4), a through hole is provided at one end of the swing connecting rod (8), a pin passes through the mounting plate of the transition piece (5) and the through hole of the swing connecting rod (8), and the swing connecting rod (8) is hinged between the upper and lower mounting plates of the transition piece (5).

6. The friction device according to claim 1, characterized in that: The bottom of the transition piece (5) is mounted on the platform (1) via a slide rail (9), and the transition piece (5) can perform reciprocating motion along the length direction of the slide rail.

7. A friction device according to claim 6, characterized in that: The lower part of the transition piece (5) is a slide groove (5-1) that cooperates with the slide rail (9). A base plate (5-2) is installed on the slide groove (5-1). A vertical stand plate (5-4) and an ear plate (5-3) are provided on the base plate (5-2). The transmission connecting rod (4) is connected to the ear plate (5-3). The stand plate (5-4) is connected to the sliding friction mechanism and the swinging friction mechanism.

8. The friction device according to claim 1, characterized in that: An adjustment block (13) is provided between the bottom surface of the support frame (6) and the working platform (1), and the upper surface of the adjustment block (13) is an inclined surface.

9. A power transmission test device comprising the friction device according to any one of claims 1 to 6, characterized in that: A product contact (11) is detachably mounted on one end of the sliding link (10) of the sliding friction mechanism facing the support frame (6), and a product contact finger seat (12) is detachably mounted on the support frame (6). The product contact (11) and the product contact finger seat (12) correspond in position to each other, and the sliding link (10) drives the product contact (11) to slide in the product contact finger seat (12).

10. A power transmission test device comprising the friction device according to any one of claims 1 to 6, characterized in that: A product contact (11) is detachably mounted on one end of the swing link (8) of the swing friction mechanism facing the working bracket (7), and a product contact finger seat (12) is detachably mounted on the working bracket (7). The product contact (11) is inserted into the product contact finger seat (12), and the transition piece (5) drives the swing link (8) to swing, and the product contact (11) performs reciprocating swing angular motion in the product contact finger seat (12).

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