CN217881298U - Compact electric brake switch - Google Patents

Abstract

The utility model belongs to the technical field of switchgear, in particular to a compact electric brake switch, which comprises a spring operating mechanism, a transmission system, a transmission frame, an output crank arm and a single-pole arc extinguish chamber; the spring operating mechanism comprises a closing spring, an opening spring and a mechanism output shaft, wherein the closing spring is arranged on the outer side of the transmission frame, and the opening spring is arranged on the inner side of the transmission frame; the output crank arm comprises a first crank arm, a second crank arm and a third crank arm, and the second crank arm and the first crank arm are arranged in a T shape; one end of each of the first crank arm, the second crank arm and the third crank arm is hinged with the mechanism output shaft; the other end of the first crank arm is connected with a brake-separating spring, the other end of the second crank arm is connected with a middle single-pole arc-extinguishing chamber, and the other end of the third crank arm is connected with a transmission system; the transmission system is connected with other single-pole arc-extinguishing chambers through a crank arm mechanism. The opening and closing springs are respectively arranged inside and outside the transmission mechanism, so that the width of a product is reduced; the output crank arm is directly connected with the arc extinguish chamber, so that the transmission efficiency is improved.

Description

Compact electric brake switch

Technical Field

The utility model belongs to the technical field of switchgear, concretely relates to compact electric brake switch.

Background

With the requirement of 'double carbon', the development of China on clean energy is more and more urgent, and a pumped storage power station becomes an important component part for the construction of a smart power grid in China with a flexible operation mode, a quick response speed and clean energy power. According to the operation characteristic that the pumped storage power station has more times of startup and shutdown, each generator motor must be provided with an electric brake switch so as to ensure the safe operation of the unit.

Due to the requirements of the construction location of the pumped storage power station, the size of the electric brake switch cannot be too large, otherwise the cost thereof would be greatly increased. Therefore, the overall size of the switch needs to be reduced as much as possible while satisfying the functional requirements. Therefore, the overall structure size and arrangement are particularly important, and how to make the electric brake switch device have simple and compact structure in a limited space and meet the requirements of field maintenance and the like is a key solution problem of project research and development.

At present, the overall structure of the switch equipment which is applied more in the industry is arranged, the operating mechanism is arranged on the front side of the body, the transmission mechanism is arranged on the lower side of the body, and the mechanism is connected with the body through multi-stage transmission. In the arrangement mode, firstly, the transmission structure is complex and the efficiency is low; secondly, the operating power of the operating mechanism is relatively large; thirdly, although the height of the product is reduced, the whole width size of the switch device is larger, the occupied area is increased, and the construction cost of the power station is high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electric brake switch of compact has solved the whole width of current switch big, highly high, lead to the problem that the construction cost is high.

The utility model discloses a realize through following technical scheme:

a compact electric brake switch comprises a spring operating mechanism, a transmission system, a transmission frame, an output crank arm and a plurality of single-pole arc extinguish chambers;

the spring operating mechanism comprises a closing spring, a separating spring and a mechanism output shaft, wherein the closing spring is arranged on the outer side of the transmission frame, and the separating spring is arranged on the inner side of the transmission frame;

the output crank arm comprises a first crank arm, a second crank arm and a third crank arm, the first crank arm and the third crank arm are on the same straight line, and the second crank arm and the first crank arm are arranged in a T shape; one end of each of the first crank arm, the second crank arm and the third crank arm is hinged with the mechanism output shaft;

the other end of the first crank arm is connected with a brake-separating spring, the other end of the second crank arm is connected with a middle single-pole arc-extinguishing chamber through a connecting plate, and the other end of the third crank arm is connected with a transmission system;

the transmission system is connected with other single-pole arc-extinguishing chambers through a crank arm mechanism.

Furthermore, the single-pole arc extinguish chambers are three, are respectively an A phase, a B phase and a C phase and are vertically arranged on the transmission frame in a straight line shape.

Furthermore, the spring operating mechanism and the transmission frame are arranged in parallel and are arranged in an L-shaped right angle with the single-pole arc extinguish chamber B.

Furthermore, the spring operating mechanism also comprises a change-over switch and a position indicating device, the third connecting lever is provided with two hole sites, a first hole close to the center of the connecting lever is connected with the change-over switch and the position indicating device, and a second hole far away from the center of the connecting lever on the third connecting lever is respectively connected with the single-pole arc extinguish chamber A \ C through a transmission system.

Furthermore, 2 hole sites are arranged on the second crank arm, and a first hole on the second crank arm, which is close to the center of the crank arm, is connected with the single-pole arc extinguish chamber B through a connecting plate;

and a second hole on the second crank arm, which is far away from the center of the crank arm, is connected with the mechanism slow-dividing and slow-closing tool and is used for debugging the mechanical characteristics of the arc extinguish chamber.

Furthermore, a short circuit terminal is arranged on the moving side of the single-pole arc extinguish chamber and comprises a short circuit copper bar and a flexible connection, the short circuit copper bar is fixed at the moving end of the single-pole arc extinguish chamber through a screw, and two adjacent sections of short circuit copper bars are connected through the flexible connection.

Furthermore, the crank arm mechanism comprises a fourth crank arm and a fifth crank arm, one end of the fourth crank arm is connected with the transmission system, the other end of the fourth crank arm is hinged with one end of the fifth crank arm, and the other end of the fifth crank arm is connected with other single-pole arc extinguishing chambers through a connecting plate.

Furthermore, the other end of the first crank arm is connected with the opening spring through a bidirectional connecting rod, wherein one end of the bidirectional connecting rod is provided with a clamping fork, and the other end of the bidirectional connecting rod is provided with a universal joint.

Compared with the prior art, the utility model discloses following profitable technological effect has:

the utility model provides a compact electric brake switch, the spring operating mechanism includes combined floodgate spring, separating brake spring, mechanism output shaft, and separating brake spring arranges in the transmission frame inboard, and combined floodgate spring arranges on the transmission frame lateral wall, has both guaranteed that the transmission frame volume can not too big, can also reduce the product width; the operating mechanism of the utility model is arranged, which accords with the requirements of product miniaturization and compound, is particularly suitable for the condition that the indoor space is limited, namely the width and the height of a switch device prototype are both limited, the spring operating mechanism is horizontally arranged at the lower side of the switch, the height of the product is effectively reduced, and meanwhile, the opening and closing springs are respectively arranged inside and outside the transmission mechanism, so that the width of the product is reduced; the output crank arm is directly connected with the arc extinguish chamber, at least one stage of transmission system is reduced, transmission efficiency is improved, spring operation power is reduced, and products are safer and more reliable to operate.

Furthermore, the short-circuit terminal comprises a short-circuit copper bar and a flexible connection, and the short-circuit copper bar is connected through the flexible connection, so that the processing error and the assembly deviation in the processing process of parts can be prevented, and the assembly is easier; meanwhile, when the switch equipment is operated in three phases, the rigid vibration between the single-pole arc extinguish chambers caused by rigid connection in the three phases is prevented, and the operation and the running of products are safer.

Drawings

Fig. 1 is a front view of a switchgear and actuator arrangement according to the present invention;

FIG. 2 isbase:Sub>A cross-sectional view A-A of FIG. 1;

FIG. 3 is a cross-sectional view B-B of FIG. 1;

fig. 4 is a schematic diagram of the structure of the output crank arm of the present invention.

Wherein, 1, a single-pole arc extinguish chamber; 2. a shorting terminal; 3. a spring operating mechanism; 4. a transmission system; 5. a transmission frame; 6. an output crank arm; 7. a crank arm mechanism;

2-1, short-connecting copper bars; 2-2, soft connection;

3-1, a closing spring; 3-2, a brake separating spring; 3-3, a change-over switch and a position indicating device; 3-4, mechanism output shaft;

6-1: a first crank arm; 6-2: a second crank arm; 6-3: a third crank arm; 6-4: a locking device; 6-5: the center of the crank arm.

7-1: a fourth crank arm; 7-2: and a fifth crank arm.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clear, the following detailed description is made with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention.

The components described and illustrated in the drawings and embodiments of the present invention may be arranged and designed in a wide variety of different configurations, and accordingly, the detailed description of the embodiments of the present invention provided in the drawings below is not intended to limit the scope of the claimed invention, but is merely representative of selected embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative efforts based on the drawings and embodiments of the present invention belong to the protection scope of the present invention.

It should be noted that: the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, element, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, element, method, article, or apparatus. Furthermore, the terms "horizontal" and "vertical" are based on the orientation and positional relationship of the devices or components shown in the drawings and are used only for the purpose of better describing the present invention, but do not require that the devices, components or equipment shown must have this particular orientation and therefore should not be construed as limiting the present invention.

Fig. 1 shows a switching device, which mainly includes a single-pole arc extinguish chamber 1, a short-circuit terminal 2, a spring operating mechanism 3, a transmission system 4, a transmission frame 5 and an output crank arm 6. Wherein the single-pole arc extinguishing chamber 1 is vertically arranged on the transmission frame 5; the short-circuit terminal 2 is arranged on the moving side of the three single-pole arc-extinguishing chambers 1 and is used for short-circuiting three-pole arc-extinguishing chambers together; the spring operating mechanism 3 is fixed on the transmission frame 5; the transmission system 4 is arranged in a transmission frame 5.

The single-pole arc extinguish chamber 1 mainly comprises 3 poles and is in a straight line shape. Insulating gas is filled in the single-pole arc extinguish chamber 1, so that the overall size of the arc extinguish chamber can be effectively shortened; the electrodes are insulated by air, the overall structure size is further reduced by effectively utilizing the interphase distance, and the development requirements of energy-saving, environment-friendly and green electric power products are met.

The short-circuit terminal 2 comprises a short-circuit copper bar 2-1 and a flexible connection 2-2, wherein the short-circuit copper bar 2-1 is fixed at the movable end of the single-pole arc-extinguishing chamber 1 through a screw, and each 2-pole arc-extinguishing chamber is connected by the flexible connection 2-2 after being connected by the short-circuit copper bar 2-1, wherein the flexible connection 2-2 is mainly used for preventing the processing error and the assembly deviation in the processing process of parts and components and making the assembly easier; meanwhile, when the switch equipment is operated in three phases, the rigid vibration between the single-pole arc-extinguishing chambers 1 caused by rigid connection of the three phases is prevented, and the operation and the running of products are safer.

The spring operating mechanism 3 comprises a closing spring 3-1, an opening spring 3-2, a change-over switch and position indicating device 3-3, a mechanism output shaft 3-4 and the like; the transmission frame is fixed on the transmission frame 5 through lateral screws, is arranged in parallel with the transmission frame 5, is positioned below a middle phase (B) of the three-phase arc-extinguishing chamber, and is arranged in a right-angle L shape with the B-phase arc-extinguishing chamber 1; the arrangement mode can effectively reduce the overall height of the switch equipment; as shown in fig. 1, the opening spring 3-2, the change-over switch and position indicating device 3-3 and the mechanism output shaft 3-4 are arranged inside the transmission frame 5; the arrangement mode can effectively reduce the whole width of the switch device and reduce the occupied area.

The output crank arm 6 is fixed on the mechanism output shaft 3-4, compared with the traditional switch device, the output crank arm 6 is directly connected with the mechanism output shaft 3-4, and the middle part of the output crank arm is not provided with any transmission structure, so that a primary transmission structure to a secondary transmission structure is reduced, the utilization rate of the mechanism operation power is improved, the spring operation mechanism 3 operation power can be effectively reduced, and the reliability of the mechanism is more favorable.

As shown in fig. 4, the output crank arm 6 mainly comprises three crank arms, namely a first crank arm 6-1, a second crank arm 6-2 and a third crank arm 6-3, wherein the first crank arm 6-1 is connected with the opening spring 3-2 through a bidirectional connecting rod, one end of the bidirectional connecting rod is a clamp fork, the other end of the bidirectional connecting rod is a universal joint, the end of the universal joint is connected with the first crank arm 6-1, and the universal joint plays a role in adjustment in the transmission process and improves the operation reliability; a first hole in the second crank arm 6-2, which is close to the mechanism output shaft 3-4, is directly connected with the single-pole arc extinguish chamber 1 (phase B); a first hole in the third crank arm 6-3, which is close to the output shaft, is connected with the change-over switch and the position indicating device 3-3 through a double-headed screw, and a second hole is connected with the transmission system 4; when the opening operation process is carried out, the mechanism output shaft 3-4 rotates along with the spring operating mechanism 3 to drive the output crank arm 6 to carry out the opening operation of the switch device.

Fig. 2 and fig. 3 are schematic sectional viewsbase:Sub>A-base:Sub>A and B-B in fig. 1 provided in an embodiment of the present invention, which are mainly for better complementing fig. 1 and enabling to more fully understand the specific arrangement of the spring operating mechanism 3 and the transmission system 4 in detail; in fig. 2 and 3, the closing spring 3-1 is arranged outside the transmission frame 4, both the opening spring 3-2 and the transmission system 4 are arranged in the transmission frame 5, the length of two connecting rods connected with the a/C phase in the transmission system 4 is adjustable, and the end joint of the connecting rod 2 is a left-handed thread and a right-handed thread, so that three-phase synchronization adjustment is facilitated, and installation and debugging are facilitated; the closing spring 3-1 and the opening spring 3-2 are arranged in parallel and horizontally, are respectively positioned at the inner side and the outer side of the transmission frame 5 and are arranged in parallel with the transmission frame 5; the opening spring 3-2 is arranged in the transmission frame 5, so that the whole structure is more compact, the whole height of the switch device can be effectively reduced, and the whole width of the switch device can be reduced.

FIG. 4 is a schematic view of an output crank arm 6 provided in an embodiment of the present invention, which mainly comprises a first crank arm 6-1, a second crank arm 6-2, a third crank arm 6-3, a locking device 6-4, and a crank arm center 6-5, wherein the output crank arm is formed by casting, and is integrally a part, which can ensure the overall strength and the crank arm precision of the part; the inner part of the crank arm center 6-5 is in a hexagonal shape, is directly assembled on the output shaft 3-4 of the spring operating mechanism 3, and is fixed with the output shaft 3-4 through the locking device 6-4 after the assembly is finished; a first crank arm 6-1 and a third crank arm 6-3 in the output crank arm 6 are on the same straight line, and a second crank arm 6-2, the first output crank arm 6-1 and the third crank arm 6-3 are arranged in a right-angle T shape; 2 hole sites are uniformly distributed on the second crank arm 6-2 and the third crank arm 6-3, wherein a first hole on the second crank arm 6-2, which is close to the center 6-5 of the crank arm, is connected with the single-pole arc extinguish chamber B through a connecting plate to drive the arc extinguish chamber to carry out switching on and off operations; a second hole in the second crank arm 6-2, which is far away from the center 6-5 of the crank arm, is connected with a mechanism slow-dividing and slow-closing tool for debugging the mechanical characteristics of the arc extinguish chamber; a first hole on the third connecting lever 6-3, which is close to the center 6-5 of the connecting lever, is connected with the change-over switch and the position indicating device 3-3 through a double-end screw, a second hole on the third connecting lever 6-3, which is far away from the center 6-5 of the connecting lever, is respectively connected with the single-pole arc-extinguishing chamber A \ C through the transmission system 4, and in the switching-on and switching-off operation processes, the change-over switch and the position indicating device 3-3 are respectively driven to act to display the switching-on and switching-off position indication of the switch equipment; meanwhile, the A/C phase single-pole arc extinguish chamber 1 is driven to realize the switching-on and switching-off operation of the switch equipment, and the switch equipment has the characteristics of simple and compact structure, function composition, high integration level and the like.

After the output crank arm 6 drives the transmission system, the transmission system drives other single-pole arc extinguish chambers to switch on and off through the crank arm mechanism 7, the connection structure of the crank arm mechanism 7 is similar to that of the output crank arm 6, only the first crank arm 6-1 is omitted, as shown in figure 1, the crank arm mechanism 7 comprises a fourth crank arm 7-1 and a fifth crank arm 7-2 which are respectively arranged at the extreme phases, namely the phase A and the phase C, one end of the fourth crank arm 7-1 is connected with the transmission system, the other end of the fourth crank arm 7-1 is hinged with one end of the fifth crank arm 7-2, and the other end of the fifth crank arm 7-2 is connected with other single-pole arc extinguish chambers through connecting plates.

In summary, the three single-pole arc-extinguishing chambers 1 are arranged in a straight line and are vertically arranged on the transmission frame 5, the spring operating mechanism 3 is laterally fixed on the transmission frame 5, and the opening and closing springs of the spring operating mechanism are respectively arranged on the inner side and the outer side of the transmission frame 5, are arranged in parallel with the transmission frame and are arranged in an L-shaped right angle with the single-pole arc-extinguishing chamber B, so that the overall height of the switch device can be effectively reduced; an output crank arm of the mechanism is directly connected with an output shaft of the spring operating mechanism and is respectively connected with a brake separating spring 3-2, a single-pole arc extinguish chamber 1, a change-over switch and a position indicating device, so that a primary transmission system to a secondary transmission system is reduced, the utilization rate of the operating power of the mechanism is improved, the operating power of the spring operating mechanism 3 can be effectively reduced, and the reliability of the mechanism is more favorable; meanwhile, the opening spring 3-2 is arranged in the transmission frame 5, so that the whole width can be effectively reduced, and the requirement of miniaturization arrangement of a user is met; the whole structure is simple and compact, the integration composite degree is high, and the operation is safer and more reliable.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents of the embodiments of the invention may be made without departing from the spirit and scope of the invention, which should be construed as falling within the scope of the claims of the invention.

Claims (8)

1. A compact electric brake switch is characterized by comprising a spring operating mechanism (3), a transmission system (4), a transmission frame (5), an output crank arm (6) and a plurality of single-pole arc extinguishing chambers (1);

the spring operating mechanism (3) comprises a closing spring (3-1), an opening spring (3-2) and a mechanism output shaft (3-4), the closing spring (3-1) is arranged on the outer side of the transmission frame (5), and the opening spring (3-2) is arranged on the inner side of the transmission frame (5);

the output crank arm (6) comprises a first crank arm (6-1), a second crank arm (6-2) and a third crank arm (6-3), the first crank arm (6-1) and the third crank arm (6-3) are on the same straight line, and the second crank arm (6-2) and the first crank arm (6-1) are arranged in a T shape; one end of each of the first crank arm (6-1), the second crank arm (6-2) and the third crank arm (6-3) is hinged with the mechanism output shaft (3-4) respectively;

the other end of the first crank arm (6-1) is connected with a brake-separating spring (3-2), the other end of the second crank arm (6-2) is connected with a middle single-pole arc-extinguishing chamber (1) through a connecting plate, and the other end of the third crank arm (6-3) is connected with a transmission system (4);

the transmission system (4) is connected with other single-pole arc-extinguishing chambers (1) through a crank arm mechanism (7).

2. A compact electric brake switch according to claim 1, characterized in that the single-pole arc chute (1) is provided with three, a phase a, a phase B and a phase C, vertically arranged in a straight line on the transmission frame (5).

3. A compact electric brake switch according to claim 2, characterized in that the spring actuator (3) is arranged parallel to the transmission frame (5) and at an L-shaped right angle to the single-pole arc chute (1) B.

4. The compact electric brake switch of claim 2, wherein the spring operating mechanism (3) further comprises a transfer switch and a position indicating device (3-3), the third connecting lever (6-3) is provided with two hole sites, a first hole near the center (6-5) of the connecting lever is connected with the transfer switch and the position indicating device (3-3), and a second hole far away from the center (6-5) of the connecting lever on the third connecting lever (6-3) is respectively connected with the single-pole arc extinguish chamber (1) A \ C through the transmission system (4).

5. The compact electric brake switch of claim 2, wherein the second crank arm (6-2) is provided with 2 holes, and a first hole of the second crank arm (6-2) close to the center (6-5) of the crank arm is connected with the B-phase of the single-pole arc-extinguishing chamber (1) through the connecting plate;

and a second hole on the second crank arm (6-2) far away from the center (6-5) of the crank arm is connected with the mechanism slow-dividing and slow-closing tool and is used for debugging the mechanical characteristics of the arc extinguish chamber.

6. The compact electric brake switch according to claim 1, wherein a short-circuit terminal (2) is arranged on the moving side of the single-pole arc extinguish chamber (1), the short-circuit terminal (2) comprises a short-circuit copper bar (2-1) and a flexible connection (2-2), the short-circuit copper bar (2-1) is fixed on the moving end of the single-pole arc extinguish chamber (1) through a screw, and two adjacent sections of short-circuit copper bars (2-1) are connected through the flexible connection (2-2).

7. The compact electric brake switch according to claim 1, characterized in that the crank mechanism (7) comprises a fourth crank arm (7-1) and a fifth crank arm (7-2), one end of the fourth crank arm (7-1) is connected with the transmission system (4), the other end is hinged with one end of the fifth crank arm (7-2), and the other end of the fifth crank arm (7-2) is connected with other single-pole arc extinguish chambers (1) through a connecting plate.

8. A compact electric brake switch according to claim 1, characterized in that the other end of the first crank arm (6-1) is connected to the opening spring (3-2) via a bidirectional link, wherein one end of the bidirectional link is a fork and the other end is a universal joint.

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