CN211907365U - Novel mechanical interlocking device - Google Patents

Abstract

The utility model discloses a novel mechanical interlocking device, including circuit breaker, circuit breaker mounting panel, it fixes on the circuit breaker mounting panel to interlock the base, the middle part of fusiformis board is passed through the interlocking axle and is installed on interlocking the base, the both ends of fusiformis board respectively with the pull rod, slide the lower extreme coupling of spacing guide arm, it is fixed in the direction square hole on the stopper is installed to the lower part of sliding spacing guide arm, the stopper forms contained angle alpha with spacing connecting lever, apart from H, the upper portion of sliding spacing guide arm passes the direction round hole of installing the slip backup pad on the circuit breaker and can slide in the direction round hole, the round hole pin joint of the upper end of operating handle and pull rod, the utility model has the characteristics of simple structure, simple to operate, economical and practical, safe and reliable, commonality interchangeability is strong, can.

Description

Novel mechanical interlocking device

Technical Field

The utility model belongs to the technical field of well low-voltage switchgear equipment, especially, relate to a mechanical interlock of medium voltage complete sets safety.

Background

Along with the continuous progress of society, the acceleration of industrialization process, when high-voltage complete sets obtain more and more extensive use, the requirement to production operation safety is also higher and higher, during high-voltage switch cabinet design manufacturing, must satisfy "five prevent the requirement", wherein prevent to take the load to divide by mistake, the requirement of mistake closing isolator is the focus, isolator + circuit breaker scheme in the current high-voltage complete sets is more and more popularized, current operating device interlocking structure is complicated, spare part is loaded down with trivial details, the fail standardized design production of fail safe reliability, need secondary measurement after reproduction preparation, this normal clear and spare part processing is wasted time and energy, later stage equipment, debugging, it is comparatively loaded down with trivial details, there is very big potential safety hazard.

SUMMERY OF THE UTILITY MODEL

The utility model aims to improve the not enough of prior art and provide a simple structure, simple to operate, economical and practical, safe and reliable, commonality interchangeability is strong, can form the novel mechanical interlock of standardized production.

The utility model aims at realizing like this, a novel mechanical interlocking device, including the circuit breaker, the circuit breaker mounting panel, characterized by interlocking base fixes on the circuit breaker mounting panel, interlocking shaft is passed through at the middle part of fusiformis board and is installed on interlocking base, the both ends of fusiformis board respectively with the pull rod, the lower extreme coupling of slip spacing guide arm, the lower part of slip spacing guide arm is installed in the direction square hole on the stopper and is fixed and make stopper and the epaxial spacing connecting lever of circuit breaker segmentation form contained angle alpha, distance H, the direction round hole of installing the slip backup pad on the circuit breaker is passed on the upper portion of slip spacing guide arm and can slide in the direction round hole, shift fork and the pin joint of the upper end of pull rod at operating device last operating.

In order to further realize the purpose of the utility model, the included angle alpha is 30-45 degrees, and the distance H is less than or equal to 5 mm.

Compared with the prior art, the utility model has the following characteristics of showing and positive effect: the interlocking base is fixed on the circuit breaker mounting plate through bolts, the interlocking base is designed into a standardized structure, the mounting position is fixed, the material is galvanized plate or aluminum-coated zinc plate, or stainless steel plate, the integral bending forming processing technology is adopted, and welding and surface treatment are not needed; the middle of the shuttle-shaped plate is provided with a round hole and is fixed on the interlocking base through the interlocking shaft, so that the up-and-down swinging of +/-30 degrees can be realized, the structure is a center of a novel interlocking device, the operation is flexible, the structure is novel, and the appearance vision of the interlocking device is improved; the movable rotating shaft penetrates through circular holes at two ends of the shuttle-shaped plate and is respectively coupled with the lower end of the pull rod and the lower end of the sliding limiting guide rod, and the end of the movable shaft is provided with the split pin, so that the structure is simple, the installation is trouble-saving and labor-saving, the operation can be carried out by one person, and the stability of the pull rod and the sliding limiting guide rod in the using process is ensured; the front face of the limiting block is provided with a guide hole, the sections of the long side and the short side of the side face are respectively provided with 1 threaded hole, in order to ensure the strength and reliability of interlocking, the thickness of the limiting block is thickened to 10mm, and the material Q235 is adopted, so that welding is not needed, the production cost is effectively reduced, and the structure of the whole interlocking device is further enhanced; the limiting block is fixed at the lower part of the sliding limiting guide rod through a bolt, and an included angle alpha of 30-45 degrees is formed between the limiting block and the limiting crank arm of the circuit breaker, the fixing part adopts standard accessories, the later maintenance is simple and reliable, the universal interchangeability is strong, the angle of the limiting crank arm of the circuit breaker can be flexibly adjusted, and the safety of the limiting device is greatly improved within a reasonable angle range; the upper end of the sliding limiting guide rod penetrates through a sliding support plate arranged on the circuit breaker and slides up and down along a guide hole in the sliding support plate, the lower part of the sliding limiting guide rod is square and is better locked with a limiting block through a bolt, and the upper part of the sliding limiting guide rod is cylindrical, so that friction generated during sliding is reduced, and the interlocking device is guaranteed to have no blocking phenomenon during operation; the handle on the left-handed operating mechanism is locked to the working position through segmentation, the pull rod on the shifting fork is locked in a linkage mode simultaneously, the shuttle-shaped plate is driven to move upwards, the shuttle-shaped plate moves the sliding limiting guide rod and the limiting block fixed on the sliding limiting guide rod downwards through the linkage shaft simultaneously, the circuit breaker is closed to a closing state, the distance between the limiting connecting lever on the main shaft of the circuit breaker segmentation and the limiting block is reduced to be within 5mm, the handle on the operating mechanism cannot rotate rightwards to the segmentation locking position at the moment, therefore, the function of an isolating switch cannot be operated after the circuit breaker is closed at the working position is achieved, the whole device is more novel and compact in structure, the stability is improved, the hidden danger caused by the failure of the interlocking device is avoided.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of a structure assembly of the present invention.

Fig. 3 is a rear view of fig. 2.

Fig. 4 is a cross-sectional view of fig. 2.

Fig. 5 is a schematic structural diagram of the working state of the present invention.

In the figure: 1. interlocking base, 2, circuit breaker mounting panel, 3, fusiformis board, 4, interlocking axle, 5, activity pivot, 6, pull rod, 7, slip spacing guide arm, 8, stopper, 9, direction square hole, 10, bolt, 11, spacing turning arm, 12, circuit breaker, 13, slip backup pad, 14, direction round hole, 15, operating device, 16, operating handle, 17, shift fork, 18, segmentation main shaft.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

A novel mechanical interlocking device is disclosed, referring to fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, an interlocking base 1 is fixed on a breaker mounting plate 2 through bolts, a round hole is arranged in the middle of a shuttle-shaped plate 3 and fixed on the interlocking base 1 through an interlocking shaft 4, round holes are arranged at two ends of the shuttle-shaped plate 3, a movable rotating shaft 5 passes through the round holes at two ends of the shuttle-shaped plate 3 and is respectively coupled with the lower end of a pull rod 6 and the lower end of a sliding limiting guide rod 7, an opening pin is arranged at the end head of the movable shaft 5, the lower part of the sliding limiting guide rod 7 passes through a guiding square hole 9 at the front side of the limiting block 8 and fixes the limiting block 8 through a bolt 10 at the side, an included angle alpha of 30 degrees and 45 degrees is formed between the limiting block 8 at the lower part of the sliding limiting guide rod 7 and a limiting crank arm 11 on a section main shaft 18 of a breaker 12, the distance H is not, a shifting fork 17 connected with the rear part of an operating handle 16 on the operating mechanism 15 is provided with a cotter pin, and the shifting fork is in pin joint with a round hole at the upper end of the pull rod 6 through the cotter pin.

The operation handle 16 on the left-hand operation mechanism 15 is rotated from a subsection blocking position to a working position, the linkage blocking shifting fork 17 is in pin joint with the upper end of the pull rod 6, the linkage blocking shifting fork 17 and the pull rod 6 drive the shuttle-shaped plate 3 to move upwards, the shuttle-shaped plate 3 drives the sliding limiting guide rod 7 and the limiting block 8 fixed on the sliding limiting guide rod 7 to move downwards through the linkage shaft 4, the circuit breaker 12 is closed to a closing state, the distance between the limiting crank arm 11 on the subsection main shaft 18 of the circuit breaker 12 and the limiting block 8 is reduced to be within 5mm, the operation handle 16 on the operation mechanism 15 cannot rotate rightwards to the subsection blocking position at the moment, so that the circuit breaker 12 at the working position can not operate an isolating switch under load, when the isolating switch needs to be operated, the circuit breaker 12 is switched off, the distance between the limiting crank arm 11 on the circuit breaker subsection main shaft 18 and, at the moment, an operating handle 16 on the operating mechanism 15 can rotate rightwards from a working position to a segmented locking position, meanwhile, a pull rod 6 on a linkage locking shifting fork 17 drives a shuttle-shaped plate 3 to move downwards, the shuttle-shaped plate 3 drives a sliding limiting guide rod 7 and a limiting block 8 fixed on the sliding limiting guide rod 7 to move upwards through a linkage shaft 4, the distance between the limiting block 8 and a limiting crank arm 11 fixed on a segmented main shaft 18 of a circuit breaker 12 is reduced to be within 5mm, and the limiting crank arm 11 cannot rotate rightwards, so that the disconnecting switch is switched on and off.

Claims (2)

1. The utility model provides a novel mechanical interlocking device, including the circuit breaker, the circuit breaker mounting panel, characterized by interlocking base fixes on the circuit breaker mounting panel, the middle part of fusiformis board is passed through the interlocking axle and is installed on interlocking base, the both ends of fusiformis board respectively with the pull rod, the lower extreme coupling of slip spacing guide arm, the lower part of slip spacing guide arm is installed and is fixed and make stopper and the main epaxial spacing connecting lever of circuit breaker segmentation form contained angle alpha in the direction square hole on the stopper, distance H, the upper portion of slip spacing guide arm passes the direction round hole of installing the slip backup pad on the circuit breaker and can slide in the direction round hole, shift fork and the pin joint of the upper end of pull rod at.

2. The novel mechanical interlocking device as claimed in claim 1, wherein the included angle α is 30 ° to 45 ° and the distance H is 5mm or less.

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