CN106405412A - Breaker feature test loading platform - Google Patents

Abstract

The invention relates to a circuit breaker characteristic test loading platform, which includes a frame, an upper contact mechanism and a lower moving contact mechanism, the lower moving contact mechanism includes a lower moving contact and a lower moving contact telescopic drive assembly, and the frame is equipped with There is a lifting loading platform. The lifting loading platform includes a lifting shelf plate and a lifting drive device that drives the lifting shelf plate to rise and fall. The lifting shelf plate slides and fits on the frame through the guide rail. The relief through hole on the rear side of the lifting track extends longitudinally, and the lower moving contact can move up and down along the relief through hole. The lower moving contact mechanism also includes a mechanism for driving the lower moving contact along the relief through hole. The lower moving contact lifting drive assembly for hole lifting, the lower moving contact has a first position that falls to the end of the lifting stroke of the staggered lifting shelf plate and a second position that rises to a position corresponding to the end of the lifting stroke of the lifting shelf plate. It has the advantages of lifting structure design, convenient loading and unloading of circuit breakers, and reliable electrical contact.

Description

Circuit breaker characteristic test loading platform

technical field

The invention relates to circuit breaker testing equipment, in particular to a circuit breaker loading platform for fixed installation and conductive connection on the circuit breaker testing equipment.

Background technique

The low-voltage circuit breaker is a key component to protect the low-voltage power distribution backbone network. It is of great significance to ensure the safe and reliable operation of the low-voltage power distribution network, and is widely used in the low-voltage power distribution backbone network. In order to ensure the working reliability of low-voltage circuit breakers, strict testing and inspection must be carried out on various technical indicators of the products before they leave the factory. The structural design of the circuit breaker loading fixture on the existing circuit breaker characteristic test bench is unreasonable, and there are defects such as inconvenient disassembly and assembly of the circuit breaker and unreliable electrical contact.

Contents of the invention

Purpose of the present invention: In order to overcome the defects of the prior art, the present invention provides a circuit breaker characteristic test loading platform with lifting structure design, convenient installation and disassembly of circuit breakers and reliable electrical contact.

To achieve the above object, the present invention provides the following technical solutions:

A circuit breaker characteristic test loading platform, including a frame, on which are provided an upper contact mechanism and a lower movable contact mechanism electrically connected to the circuit breaker terminals, the upper contact mechanism includes a front conductive end in the shape of a 7 The upper clamping contact, the lower moving contact mechanism includes a lower moving contact with a 7-shaped front conductive end, and the lower moving contact is telescopically sliding back and forth to fit on the frame, and the driving lower moving contact is installed on the back of the frame. The telescopic drive assembly of the lower moving contact of the head is characterized in that: the frame is provided with a liftable lifting loading platform, and the lifting loading platform includes a lifting shelf plate for positioning and placing the circuit breaker and a lifting shelf plate for driving the lifting shelf plate. Lifting driving device, the lifting shelf plate slides and fits on the frame through the guide rail, and the frame has a relief through hole for the lower moving contact to shrink to the rear side of the lifting track of the lifting shelf plate, and the relief through hole extends longitudinally , the lower moving contact can be moved up and down along the through hole for giving way, and the lower moving contact mechanism also includes a lower moving contact lifting drive assembly that drives the lower moving contact for lifting and lowering along the through hole for giving way, and the lower moving contact It has a first position that falls to the end of the lifting stroke of the staggered lifting shelf plate and a second position that rises to a position corresponding to the end of the lifting stroke of the lifting shelf plate.

By adopting the above technical scheme, when the circuit breaker is tested, the lifting shelf plate is lowered to the lowest position to facilitate the loading of the circuit breaker. At this time, the lower moving contact is lowered to the first position and retracted to the rear side of the lifting track of the lifting shelf plate to avoid the lower moving contact. The lifting shelf plate is blocked, and then the lifting drive device drives the lifting shelf plate carrying the circuit breaker to rise to the corresponding position of the upper moving contact mechanism, and then the upper moving contact extends again and rises to the second position, and the circuit breaker is clamped to ensure electrical protection Reliable contact; realize automatic lifting and loading of the circuit breaker, facilitate assembly and disassembly of the circuit breaker from the test bench, and improve work efficiency; at the same time, the lower moving contact can be lifted and retracted, which not only achieves the relief of the lower moving contact on the lifting shelf plate position, to ensure the design of the lifting loading platform for automatic lifting and loading of the circuit breaker, and the lifting design of the moving contact, through the adjustment of the stroke, the lower moving contact can better correspond to the circuit breaker, making the electrical contact reliable.

Preferably, the frame has a positioning back surface for back positioning of the circuit breaker, the positioning back surface is inclined, and the lateral side of the positioning back surface is provided with a fixed track for lateral positioning of the circuit breaker The fixed track plate extends along the longitudinal direction. The lifting shelf plate is provided with a positioning bayonet, and the positioning bayonet on the lifting shelf plate is positioned and matched with the fixed track plate. track board. Under this structural design, the structure is simple, and the positioning and lifting of the circuit breaker are reliable, and at the same time, excessive force is avoided on the lifting shelf plate.

Preferably, the lifting drive device includes a first lifting cylinder and a second lifting cylinder, the cylinder arm of the first lifting cylinder is fixedly connected to the lifting shelf plate, the second lifting cylinder is fixedly installed on the frame, and the second lifting cylinder A movable plate is provided on the cylinder arm of the cylinder, and the movable plate can slide and fit on the frame through the guide rail along the longitudinal direction, and the first lifting cylinder is fixedly installed on the movable plate. Under this structural design, double cylinders are used to realize the lifting drive of the lifting shelf plate, which can realize more accurate and reliable position adjustment, ensure that the circuit breaker is loaded in place, and improve the reliability of the equipment. The lifting drive device has a simple structure and reliable action.

Preferably, the lifting drive assembly of the lower moving contact includes a mounting frame, a third lifting cylinder and a fourth lifting cylinder, the mounting frame lifts and slides to fit on the frame, and the mounting frame is connected to the cylinder arm of the third lifting cylinder , the fourth lifting cylinder is fixedly installed on the frame, the cylinder arm of the fourth lifting cylinder is linked with a lifting bracket, and the lifting bracket is lifted and slidably matched on the frame, and the third lifting cylinder is fixedly installed on the lifting bracket , the telescopic drive assembly of the lower moving contact is installed on the mounting frame, and the lower moving contact is fitted to the mounting frame in a telescopic and slidable manner along the front and rear to form an indirect sliding fit on the frame. Under this structural design, the overall structure is neat and compact, and the double cylinder design is adopted to achieve the lifting action of the lower moving contact, which can realize the lifting action of a large stroke and the fine-tuning of a small stroke, making the position of the lower moving contact more accurate and reliable, and ensuring the operation of the equipment reliable.

Preferably, the telescopic driving assembly of the lower moving contact includes a first telescopic cylinder, a second telescopic cylinder and a movable seat, the movable seat is fitted on the mounting bracket in a manner of sliding in the front and rear directions, and the first telescopic cylinder is fixedly installed On the movable seat, the cylinder arm of the first telescopic cylinder is fixedly connected with the mounting frame, the second telescopic cylinder is fixedly installed on the movable seat, the cylinder arm of the second telescopic cylinder is equipped with a fixed plate, and the lower moving contact is connected to the movable seat. The fixed plate is fixedly connected, and the movable seat is provided with a lower contact positioning guide hole seat, and the sliding guide of the lower moving contact fits in the positioning guide hole of the lower contact positioning guide hole seat. Under this structural design, the overall structure is simple and compact, and the double cylinder is used to drive the lower movable contact to expand and contract, so that the control is more accurate and reliable, and the equipment is guaranteed to work reliably.

Preferably, the upper clamping contact is assembled on the frame in a manner that can slide forward and backward, and the upper clamping contact is connected with an upper contact drive assembly that drives it to expand and contract, and the upper contact drive assembly includes a mounting plate , the lower clamping contact is fixedly connected to the mounting plate, the two ends of the mounting plate are connected with the telescopic drive cylinder of the upper contact, the telescopic drive cylinder of the upper contact is fixed on the frame, and the cylinder arm of the telescopic drive cylinder of the upper contact is connected with the The mounting plate is fixedly connected. Under this structural design, the upper clamping contact adopts a retractable movable setting, and the conductive contact with the circuit breaker is more reliable.

The present invention will be further described below in conjunction with the accompanying drawings.

Description of drawings

Fig. 1 is a structural schematic diagram of a circuit breaker characteristic test loading platform in a state where the lower moving contact makes way for a specific embodiment of the present invention;

Fig. 2 is a schematic structural view of the loading platform for testing the characteristics of a circuit breaker according to a specific embodiment of the present invention when the lifting shelf plate is at the end of the lifting stroke and the lower moving contact is at the first position;

Fig. 3 is a structural schematic diagram of a circuit breaker characteristic test loading platform according to a specific embodiment of the present invention when the lifting shelf plate is at the end of the rising stroke and the lower moving contact is at the second position;

Fig. 4 is a schematic structural diagram of the lower moving contact mechanism of a specific embodiment of the present invention;

Fig. 5 is a schematic structural diagram of an upper contact mechanism according to a specific embodiment of the present invention;

Fig. 6 is a schematic diagram of the structure of the lifting and loading platform according to a specific embodiment of the present invention.

detailed description

As shown in Figures 1 to 6, a circuit breaker characteristic test loading platform disclosed by the present invention includes a frame 1 on which an upper contact mechanism 2 and a lower contact mechanism 2 electrically connected to the circuit breaker 9 terminal 91 are arranged. The moving contact mechanism 3, the upper contact mechanism 2 includes the upper clamping contact 21 with the front conductive end in the shape of a 7, the lower moving contact mechanism 3 includes the lower moving contact 31 with the front conductive end in the shape of a 7, and the lower moving contact The contact 31 is telescopic and slidingly fitted on the frame 1. The lower movable contact telescopic drive assembly for driving the lower movable contact 31 is installed on the back of the frame 1. The frame 1 is provided with a lifting and lowering loading mechanism. Platform 4, the lifting loading platform 4 includes a lifting shelf plate 41 for positioning and placing the circuit breaker 9 and a lifting drive device for driving the lifting shelf plate 41 up and down. The lifting shelf plate 41 slides and fits on the frame 1 through guide rails. The frame 1 has a relief through hole 11 for the lower moving contact 31 to shrink to the rear side of the lifting track of the lifting shelf plate 41. The relief through hole 11 extends longitudinally, and the lower moving contact 31 can move up and down along the relief through hole 11. , the lower moving contact mechanism 3 also includes a lower moving contact lifting drive assembly that drives the lower moving contact 31 to lift up and down along the through hole 11, and the lower moving contact 31 has a function of falling until the staggered lifting shelf plate 41 rises. The first position at the end of the stroke and the second position that rises to the position corresponding to the end of the lifting stroke of the lifting shelf plate 41 .

When the circuit breaker is tested, the lifting shelf plate 41 drops to the lowest position to facilitate the loading of the circuit breaker 9. At this time, the lower moving contact 31 drops to the first position and shrinks to the rear side of the lifting track of the lifting shelf plate 41 (as shown in Figure 1). Avoid the lower moving contact 31 from forming a block to the lifting shelf plate 41; then the lifting drive device drives the lifting shelf plate 41 carrying the circuit breaker 9 to rise to the corresponding position of the upper moving contact mechanism 2 (as shown in Figure 2), and then the upper moving contact 31 stretches out again and rises to the second position, and the circuit breaker 9 is clamped to ensure reliable electrical contact (as shown in Figure 3); the automatic lifting and loading of the circuit breaker is realized, which facilitates the assembly and disassembly of the circuit breaker from the test bench, and provides work Efficiency; at the same time, the lower moving contact can be lifted and retracted, which not only achieves the abdication of the lower moving contact to the lifting shelf plate, but also ensures the design of the lifting loading platform for automatic lifting and loading of the circuit breaker, and the lifting design of the moving contact is lower. , Through the adjustment of the stroke, the lower moving contact can better correspond to the circuit breaker, so that the electrical contact is reliable.

Wherein, the frame 1 has a positioning backrest surface 12 for the circuit breaker 9 to lean against and position. The positioning backrest surface 12 is arranged obliquely. By the fixed track plate 13 positioned, the fixed track plate 13 extends longitudinally, and the lifting shelf plate 41 is provided with a positioning bayonet 411. The shelf plate 41 is guided and fitted on the fixed rail plate 13 through the positioning bayonet 411 . Under this structural design, the structure is simple, and the positioning and lifting of the circuit breaker are reliable, and at the same time, excessive force is avoided on the lifting shelf plate. And on fixed track plate 13, be provided with limit projection shoulder 131, limit projection shoulder 131 cooperates with lifting shelving plate 41 stop limit, plays the lifting position limit to lifting shelving plate.

The lifting drive device includes a first lifting cylinder 42 and a second lifting cylinder 43, the cylinder arm of the first lifting cylinder 42 is fixedly connected with the lifting shelf plate 41, and the second lifting cylinder 43 is fixedly installed on the frame 1. The cylinder arms of the two lifting cylinders 43 are provided with movable plates 44 , which are slidably fitted on the frame 1 along the longitudinal direction through guide rails. The first lifting cylinder 42 is fixedly mounted on the movable plates 44 . Under this structural design, double cylinders are used to realize the lifting drive of the lifting shelf plate, which can realize more accurate and reliable position adjustment, ensure that the circuit breaker is loaded in place, and improve the reliability of the equipment. The lifting drive device has a simple structure and reliable action. In order to securely install the lifting shelf plate and make the overall structure compact, there are two guide rails for installing the movable plate 44, which are respectively arranged at both ends of the movable plate 44 in the length direction, and the guide rails coincide with the sliding track of the lifting shelf plate 41 , for lifting and lowering the shelf plate 41 assembly.

In this specific embodiment, the lower moving contact lifting drive assembly includes a mounting frame 32, a third lifting cylinder 33, and a fourth lifting cylinder 34. The mounting frame 32 is lifted and slidably fitted on the frame 1. The mounting frame 32 Connected with the cylinder arm of the third lifting cylinder 33, the fourth lifting cylinder 34 is fixedly installed on the frame 1, and the cylinder arm of the fourth lifting cylinder 34 is linked with a lifting bracket 35, and the lifting bracket 35 lifts and slides to fit on the machine. On the frame 1, the third lifting cylinder 33 is fixedly installed on the lifting bracket 35, and the telescopic drive assembly of the lower moving contact 31 is installed on the mounting frame 32, and the lower moving contact 31 can be telescopically slid along the front and rear. The mounting bracket 32 thus constitutes an indirect sliding fit on the frame 1 . The overall structure is neat and compact, and the double cylinder design is adopted to achieve the lifting action of the lower moving contact, which can realize the lifting action of a large stroke and the fine-tuning of a small stroke, making the position of the lower moving contact more accurate and reliable, and ensuring the reliable operation of the equipment.

The telescopic driving assembly of the lower moving contact includes a first telescopic cylinder 36, a second telescopic cylinder 37 and a movable seat 38. The movable seat 38 is fitted on the mounting frame 32 in a sliding manner along the front and rear directions. The first telescopic cylinder 36 is fixedly installed on the movable seat 38, and a first telescopic cylinder 36 is provided at both ends of the movable seat 38 in the length direction, and the cylinder arm of the first telescopic cylinder 36 is fixedly connected with the mounting frame 32, and the second telescopic cylinder 37 is fixedly installed On the movable seat 38, the cylinder arm of the second telescopic cylinder 37 is equipped with a fixed plate 39, and the two ends of the length direction of the fixed plate 39 are all provided with a second telescopic cylinder 37, and the lower moving contact 31 is connected to the fixed plate 39. Fixedly connected, the movable seat 38 is provided with a lower contact positioning guide hole seat 381 , and the lower moving contact 31 slides and guides to fit in the positioning guide hole of the lower contact positioning guide hole seat 381 . Under this structural design, the overall structure is simple and compact, and the first telescopic cylinder and the second telescopic cylinder are used to control the telescopic movement of the moving contact more accurately and reliably, ensuring reliable operation of the equipment.

In addition, the upper clamping contact 21 is assembled on the frame 1 in a manner that can slide forward and backward, and the upper clamping contact 21 is connected with an upper contact drive assembly that drives it to expand and contract. The upper contact drive assembly includes The mounting plate 22, the lower clamping contact 21 is fixedly connected on the mounting plate 22, the two ends of the mounting plate 22 are connected with the telescopic driving cylinder 23 of the upper contact, and the telescopic driving cylinder 23 of the upper contact is fixed on the frame 1. The cylinder arm of the contact telescopic drive cylinder 23 is fixedly connected with the mounting plate 22 . Under this structural design, the upper clamping contact adopts a retractable movable setting, and the conductive contact with the circuit breaker is more reliable.

Claims (6)

1. a kind of circuit breaker characteristic tests loading stage, and including organic frame, frame is provided with and is electrically connected with breaker connecting terminal Upper contact head mechanism and lower moving contact mechanism, upper contact head mechanism includes the upper clamping contact that front conductive end is in 7 fonts, lower moving contact Mechanism includes the lower moving contact that front conductive end is in 7 fonts, and lower moving contact is in that elastic sliding coordinates in frame, and frame is carried on the back Face be provided with drive lower moving contact lower moving contact telescopic drive assembly it is characterised in that：Described frame is provided with liftable Lifting loading stage, lifting loading stage include for positioning place breaker lifting shelves plate and drive lifting shelve plate The lifting drive of lifting, lifting is shelved plate and is coordinated in frame through guide rail sliding, described frame has and supplies lower moving contact It is reduced to and lifts the resigning through hole shelved on rear side of plate lifting track, resigning through hole extends longitudinally, and lower moving contact can be along resigning through hole Lifting activity, described lower moving contact mechanism also includes and drives lower moving contact to drive along the lower moving contact lifting that resigning through hole lifts Assembly, described lower moving contact have dropping to stagger lifting shelve the primary importance of plate upward stroke end and rise to and rise Fall shelves the second place of plate upward stroke end correspondence position.

2. according to claim 1 circuit breaker characteristic test loading stage it is characterised in that：Have in described frame and supply breaker The positioning leaning against positioning leans against face, and described positioning leans against face and is obliquely installed, and positioning leans against the horizontal side in face and is provided with for breaker side To the retaining rail guidance tape against positioning, retaining rail guidance tape along Longitudinal extending, shelve plate and be provided with limited bayonet by described lifting, rises Fall shelves limited bayonet location fit on plate, and, on retaining rail guidance tape, lifting shelves plate located bayonet socket sliding guiding cooperation solid On orbit determination guidance tape.

3. circuit breaker characteristic according to claim 1 or claim 2 test loading stage it is characterised in that：Described lifting drive bag Include the first lift cylinder and the second lift cylinder, the cylinder arm of the first lift cylinder is shelved plate with lifting and is fixedly connected, described Two lift cylinders are fixedly mounted in frame, and the cylinder arm of the second lift cylinder is provided with portable plate, and portable plate is vertical through guide rail edge Coordinate in frame to slip, described first lift cylinder is fixedly mounted on portable plate.

4. circuit breaker characteristic according to claim 1 or claim 2 test loading stage it is characterised in that：Described lower moving contact lifting is driven Dynamic assembly includes installing rack, the 3rd lift cylinder and the 4th lift cylinder, and described installing rack lifting sliding coordinates in frame, Installing rack is connected with the cylinder arm of the 3rd lift cylinder, and described 4th lift cylinder is fixedly mounted in frame, the 4th lifting air The cylinder arm of cylinder is connected lifting support, and lifting support lifting sliding coordinates in frame, and described 3rd lift cylinder is solid Dingan County is contained on lifting support, and described lower moving contact telescopic drive assembly is arranged on installing rack, and lower moving contact is with can be along in front and back Flexible sliding is matched with installing rack and is indirectly slidably fitted in frame thus constituting.

5. according to claim 4 circuit breaker characteristic test loading stage it is characterised in that：Described lower moving contact telescopic drive group Part includes the first telescopic cylinder, the second telescopic cylinder and sliding seat, and described sliding seat is coordinated with sliding type along the longitudinal direction On described installing rack, the first telescopic cylinder is fixedly mounted in sliding seat, and the cylinder arm of the first telescopic cylinder is solid with installing rack Fixed connection, described second telescopic cylinder is fixedly mounted in sliding seat, and the cylinder arm of the second telescopic cylinder is provided with fixed plate, institute State lower moving contact to be fixedly connected with fixed plate, described sliding seat is provided with lower contact positioning pilot hole seat, lower moving contact slides and leads To cooperation in the positioning pilot hole of lower contact positioning pilot hole seat.

6. circuit breaker characteristic according to claim 1 or claim 2 test loading stage it is characterised in that：Described upper clamping contact is with can The mode stretched along sliding in front and back is assemblied in frame, and upper clamping contact is connected with and drives its flexible upper contact head drive component, Upper contact head drive component includes installing plate, and lower clamping contact is fixedly connected on a mounting board, and the two ends of installing plate are respectively connected with Contact telescopic drive cylinder, upper contact head telescopic drive cylinder is fixed in frame, the cylinder arm of upper contact head telescopic drive cylinder with Installing plate is fixedly connected.