CN211350540U - Circuit breaker energy storage mechanism and switch cabinet using same - Google Patents
Circuit breaker energy storage mechanism and switch cabinet using same Download PDFInfo
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- CN211350540U CN211350540U CN202020453590.4U CN202020453590U CN211350540U CN 211350540 U CN211350540 U CN 211350540U CN 202020453590 U CN202020453590 U CN 202020453590U CN 211350540 U CN211350540 U CN 211350540U
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Abstract
The utility model discloses a circuit breaker energy storage mechanism and use this circuit breaker energy storage mechanism's cubical switchboard, include: the energy storage device comprises a rack, an energy storage rotating shaft connected with the rack and a driving assembly suitable for driving the energy storage rotating shaft to rotate; wherein the energy storage rotating shaft is erected in the frame; the driving assembly comprises a one-way bearing sleeved on the energy storage rotating shaft, a pair of symmetrically arranged wheel discs sleeved on the one-way bearing and a cam plate; the cam plate is positioned between the pair of wheel discs and clamped by the pair of wheel discs; and the pair of wheel discs are respectively provided with a stress structure in one-to-one correspondence. The utility model discloses can improve circuit breaker energy storage mechanism's transmission stability and life.
Description
Technical Field
The utility model relates to a cubical switchboard technical field, concretely relates to circuit breaker energy storage mechanism and use this circuit breaker energy storage mechanism's cubical switchboard.
Background
At present, most of common circuit breaker energy storage mechanisms in the market of switch cabinets use gears, chain wheels and chains as transmission media, for example, a first chain wheel and a second gear are sleeved on an output shaft of a driving motor for the energy storage mechanism of the circuit breaker disclosed by the publication No. CN206497850U, the first gear is sleeved on a gear shaft between two frame plates, and the second chain wheel is sleeved on an energy storage rotating shaft between the two frame plates. The following problems are found in practical use: the multistage transmission that gear, sprocket, chain formed not only assembles the difficulty, and the reliability is lower in long-term use moreover, takes place the condition such as gear wearing and tearing and chain fracture easily, and this can influence the quality of product greatly, causes the potential safety hazard even, and it is also very inconvenient to change impaired part when overhauing.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a first purpose provides a circuit breaker energy storage mechanism to solve the technical problem who improves circuit breaker energy storage mechanism's transmission stability and life.
The utility model aims at providing a cubical switchboard to solve the technical problem who improves circuit breaker energy storage mechanism's transmission stability and life.
The utility model discloses a circuit breaker energy storage mechanism is realized like this:
a circuit breaker energy storage mechanism comprising: the energy storage device comprises a rack, an energy storage rotating shaft connected with the rack and a driving assembly suitable for driving the energy storage rotating shaft to rotate; wherein
The energy storage rotating shaft is erected in the rack;
the driving assembly comprises a one-way bearing sleeved on the energy storage rotating shaft, and a pair of symmetrically arranged wheel discs and a cam plate which are sleeved on the one-way bearing;
the cam plate is positioned between the pair of wheel discs and clamped by the pair of wheel discs; and
and the pair of wheel discs are respectively provided with a stress structure in one-to-one correspondence.
In a preferred embodiment of the present invention, the end of the energy storage shaft extending outside the frame is coupled with the crank arm, and the other end of the energy storage shaft extending outside the frame is coupled with the holding pawl.
In a preferred embodiment of the present invention, the wheel disc includes a body portion of a circular structure sleeved on the energy storage rotating shaft, and an extending portion integrally connected to the body portion;
the stress structure is arranged on the extension part; and
the stress structures respectively arranged on the extending parts of the pair of wheel discs are the same and are symmetrically arranged;
the stress structure comprises a front stress part and a rear stress part which are respectively arranged on two side end faces of the extension part of the same wheel disc, which are vertical to the axis direction of the energy storage rotating shaft; namely, the front stress part and the rear stress part are respectively positioned on two side end faces of the extension part, which are opposite to each other.
In a preferred embodiment of the present invention, the front force-receiving portion is a first roller; the first roller is connected with the extension part through a connecting frame; and
the rear stress part adopts a first elastic pin.
In a preferred embodiment of the present invention, the driving assembly further comprises a resilient structure adapted to mate with the first resilient pin;
the elastic structure comprises a first spring with one end matched with the first elastic pin and a second elastic pin matched with the other end of the first spring; wherein
The second elastic pin is arranged on the part of the frame facing the first elastic pin;
the second elastic pin and the first elastic pin are arranged oppositely.
In a preferred embodiment of the present invention, the driving assembly further comprises a lever group adapted to abut against the first roller;
the operating rod group comprises a linkage rod which is rotationally matched with the part of the machine frame facing the first roller, a cam which is arranged on the end part of the linkage rod facing the first roller, and an operating rod which is fixedly connected with the end part of the linkage rod far away from the cam; wherein
The operating rod is provided with a hollow installation cavity suitable for being matched and connected with the operating handle; and
the end of the cam facing the first roller is inclined with respect to the first roller, i.e. has a portion of a convex section adapted to abut against the first roller at the end of the cam facing the first roller.
In a preferred embodiment of the present invention, the circuit breaker energy storage mechanism further comprises a limiting component;
the limiting assembly comprises a limiting frame arranged on the rack and a second roller arranged on the limiting frame and suitable for being abutted against the protruding part of the cam plate.
In a preferred embodiment of the present invention, the end of the limiting frame facing the cam plate has a concave arc section;
the second roller is matched and connected with the arc-shaped section, and the end surface of the second roller facing the cam plate is protruded from the end surface of the arc-shaped section facing the cam plate; and
the part of the limiting frame, which is positioned at the bottom end of the arc-shaped section, is matched and connected with the rack through a pin shaft;
the part of the limiting frame, which is positioned at the top end of the arc-shaped section, is matched and connected with the extending parts of the pair of wheel discs through a third elastic pin;
the part of the limiting frame, which is positioned at the top end of the arc-shaped section, is provided with a notch, and the extension part of the wheel disc is provided with a third elastic pin which is suitable for extending into the notch.
In a preferred embodiment of the present invention, a protruding block is disposed on an end of the limiting frame away from the second roller; and
a fourth elastic pin suitable for corresponding to the lug is further arranged at the end part, facing the lug, of the rack;
and a second spring is matched between the lug and the fourth elastic pin.
The utility model discloses a cubical switchboard realizes like this:
a switchgear cabinet comprising: the circuit breaker energy storage mechanism.
The utility model has the advantages that: the utility model discloses a circuit breaker energy storage mechanism and use this circuit breaker energy storage mechanism's cubical switchboard, drive assembly adopt a pair of rim plate and lie in between a pair of rim plate and by the tight cam plate of a pair of rim plate clamp, rely on the accurate transmission structure of a pair of rim plate cooperation cam plate and energy storage pivot, reduce the gear among the prior art, the sprocket, the structure that the multistage drive that the chain formed exists is complicated and uses unstable problem to improved relatively the utility model discloses a circuit breaker energy storage mechanism's reliability.
Furthermore, through the limiting assembly arranged, when the operating handle is rotated after energy storage is completed, the driving assembly cannot rotate continuously, the abrasion problem of the driving assembly in the continuous rotation process is avoided, and therefore the service life of the whole circuit breaker energy storage mechanism is prolonged.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural view of a circuit breaker energy storage mechanism according to embodiment 1 of the present invention at a first view angle;
fig. 2 is a schematic structural diagram of a circuit breaker energy storage mechanism according to embodiment 1 of the present invention at a second view angle;
fig. 3 is a schematic structural diagram of a first roller and cam cooperation state of a circuit breaker energy storage mechanism according to embodiment 1 of the present invention at a first viewing angle;
fig. 4 is a schematic structural diagram of a first roller and cam cooperation state of a circuit breaker energy storage mechanism according to embodiment 1 of the present invention at a second viewing angle;
fig. 5 is a schematic structural diagram of a circuit breaker energy storage mechanism according to embodiment 1 of the present invention at a third view angle;
fig. 6 is a schematic structural view of the circuit breaker energy storage mechanism according to embodiment 1 of the present invention in a state where the limiting frame is engaged with the wheel disc;
fig. 7 is a schematic structural view of a limiting frame of a circuit breaker energy storage mechanism according to embodiment 1 of the present invention;
fig. 8 is a schematic structural view of a frame of a circuit breaker energy storage mechanism according to embodiment 1 of the present invention;
fig. 9 is a schematic structural view of a state in which a third elastic pin of the circuit breaker energy storage mechanism according to embodiment 1 of the present invention is engaged with a notch;
fig. 10 is a schematic structural view of a state in which a cam of a circuit breaker energy storage mechanism according to embodiment 1 of the present invention pulls a certain distance between a first roller and a cam under the cooperation of a notch and a third elastic pin;
fig. 11 is a schematic structural view of the circuit breaker energy storage mechanism according to embodiment 1 of the present invention, in which the holding pawl is latched to the closing trip.
In the figure: the device comprises a left side plate 1, a right side plate 2, a through hole A, a through hole B, a pin shaft 3, a shaft sleeve 5, a bent plate 6, a small circular hole 7, a second elastic pin 8, a bent plate 9, a fourth elastic pin 10, a bump 11, an energy storage rotating shaft 12, a crank arm 13, a holding pawl 15, a one-way bearing 16, a cam plate 17, a protruding part 171, a rectangular key groove 18, a body part 19, an extending part 20, a first roller 21, a connecting frame 22, a first elastic pin 23, a first spring 25, a cam 27, an operating rod 28, a mounting cavity 29, a protruding section 271, a limiting frame 30, a second roller 31, an arc-shaped section 32, a third elastic pin 33, a second spring 35 and a notch 38.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
Example 1:
as shown in fig. 1 to 11, the present embodiment provides a circuit breaker energy storage mechanism, including: the energy storage device comprises a frame, an energy storage rotating shaft 12 connected with the frame and a driving assembly suitable for driving the energy storage rotating shaft 12 to rotate; wherein the energy storage rotating shaft 12 is erected in the frame; one end of the energy storage rotating shaft 12 extending out of the machine frame is connected with a crank arm 13 in a matching mode, and the other end of the energy storage rotating shaft 12 extending out of the machine frame is connected with a holding pawl 15 in a matching mode. The crank arm 13 of the embodiment is used for connecting an energy storage spring (not shown in the figure), the corresponding crank arm 13 is driven to rotate when the energy storage rotating shaft 12 rotates, and when the energy storage spring connected to the crank arm 13 rotates to a certain angle, energy storage is completed.
The driving assembly comprises a one-way bearing 16 sleeved on the energy storage rotating shaft 12, a pair of symmetrically arranged wheel discs and a cam plate 17, wherein the wheel discs and the cam plate 17 are sleeved on the one-way bearing 16, the cam plate 17 is positioned between the pair of wheel discs and is clamped by the pair of wheel discs, namely the one-way bearing 16 penetrates through the middle of the pair of wheel discs and the cam plate 17, and the pair of wheel discs and the cam plate 17 are tightly combined together at a certain angle. And the pair of wheel discs are respectively provided with a stress structure in one-to-one correspondence.
In an alternative embodiment, for example, a whole rectangular key slot 18 is pre-formed in the energy storage rotating shaft 12 along an axial direction parallel to the energy storage rotating shaft 12, and the one-way bearing 16, the holding latch 15 and the crank arm 13 can be directly mounted on the energy storage rotating shaft 12 and fixed by a rectangular key matched with the rectangular key slot 18.
The wheel disc comprises a body part 19 of a circular structure sleeved on the energy storage rotating shaft 12 and an extension part 20 integrally connected with the body part 19; the stress structure is arranged on the extension part 20; the stress structures respectively arranged on the extending parts 20 of the pair of wheel discs are the same and are symmetrically arranged; the stress structure comprises a front stress part and a rear stress part which are respectively arranged on two side end faces of the extension part 20 of the same wheel disc, which are vertical to the axial direction of the energy storage rotating shaft 12; namely, the front force-receiving portion and the rear force-receiving portion are respectively located on two side end faces of the extension portion 20 which are opposite to each other.
In an alternative embodiment, the front force-receiving part uses a first roller 21; the first roller 21 is connected to the extension 20 by a link frame 22; and the rear force-receiving portion employs a first elastic pin 23. The driving assembly further comprises a resilient structure adapted to mate with the first resilient pin 23; the elastic structure comprises a first spring 25 with one end matched with the first elastic pin 23 and a second elastic pin 8 matched with the other end of the first spring 25; wherein the second elastic pin 8 is provided on a portion of the frame facing the first elastic pin 23; the second elastic pin 8 is disposed opposite to the first elastic pin 23 so that the first spring 25 is compressively deformed in a direction in which the extending portion 20 rotates.
The drive assembly further comprises a set of levers 28 adapted to abut against the first rollers 21; the operating rod 28 group comprises a linkage rod 26 rotationally coupled with the part of the machine frame facing the first roller 21, a cam 27 arranged on the end part of the linkage rod 26 facing the first roller 21, and an operating rod 28 fixedly connected with the end part of the linkage rod 26 far away from the cam 27; wherein the operating rod 28 has a hollow mounting cavity 29 adapted to mate with an operating handle; and the end of the cam 27 facing the first roller 21 is inclined with respect to the first roller 21, i.e. at the end of the cam 27 facing the first roller 21 there is a portion of a raised section 271 adapted to abut against the first roller 21. When the operating lever 28 is rotated by using the operating handle, the linkage rod 26 and the cam 27 rotate synchronously, and the convex section 271 on the cam 27 is in clearance contact with the first roller 21 in the rotating process of the cam 27.
When the operating handle is used for driving the operating rod 28 to rotate, the linkage rod 26 and the cam 27 rotate synchronously, when the convex section 271 of the cam 27 abuts against the first rollers 21 respectively arranged on the extending parts 20 of the pair of wheel discs, the pair of wheel discs communicated with the cam plate 17 can rotate towards the direction far away from the cam 27, the pair of wheel discs at the moment give a large radial acting force to the one-way bearing 16, so that the one-way bearing 16 is driven to rotate, the one-way bearing 16 further drives the energy storage rotating shaft 12 to rotate, and meanwhile, in the process, the first spring 25 is compressed. When the pair of the wheel disc and the cam plate 17 rotates a certain angle and the convex section 271 of the cam 27 leaves the first roller 21, the pair of the wheel disc and the cam plate 17 rotates toward the cam 27 under the returning force of the first spring 25 until the first roller 21 can contact the non-convex section 271 of the cam 27. Thus, in the continuous process of moving away from and approaching the cam 27 relative to the pair of wheel discs and the cam plate 17, the one-way bearing 16 drives the energy storage rotating shaft 12 to rotate towards the same direction, so as to drive the crank arm 13 on the energy storage rotating shaft 12 to rotate, and the crank arm 13 compresses the energy storage spring to store energy until the energy storage process is completed.
When considering to ensure that the energy storage is accomplished the back and rotate operating handle, drive assembly can not continue to rotate, and the circuit breaker energy storage mechanism of this embodiment still includes spacing subassembly. In detail, the limiting assembly includes a limiting frame 30 disposed on the frame, and a second roller 31 disposed on the limiting frame 30 and adapted to abut against the convex portion 171 of the cam plate 17. It should be noted that the second roller 31 is disposed at a position corresponding to the cam plate 17, so that the second roller 31 can abut against the boss 171 of the cam plate 17 after the cam plate 17 rotates by a certain angle.
The end of the spacing block 30 facing the cam plate 17 has a concave arc-shaped section 32; the retainer 30 of the present embodiment adopts a structure in which two symmetrically disposed side plates 311 are connected through a back plate 312, such that an opening 313 is formed at an end of the arc-shaped section 32 facing the wheel disc, and in such a structure, the opening 313 faces the cam plate 17, the second roller 31 is coupled with the arc-shaped section 32, specifically, the second roller 31 is assembled in the opening 313, and an end surface of the second roller 31 facing the cam plate 17 protrudes from an end surface of the arc-shaped section 32 facing the cam plate 17, so that when the second roller 31 rotates to a certain angle along with the cam plate 17, the protrusion 171 on the cam plate 17 can abut against the second roller 31.
In addition, the part of the limiting frame 30, which is located at the bottom end of the arc-shaped section 32, is connected with the rack in a matching mode through the pin shaft 3, so that the limiting frame 30 can rotate relative to the rack around the pin shaft 3, namely the limiting frame 30 is not fixedly connected with the rack. The portion of the retainer 30 located at the top end of the arc-shaped segment 32 is coupled to the extensions 20 of the pair of wheel discs by the third elastic pin 33. In detail, a notch 38 is provided on the position of the limiting frame 30 at the top end of the arc-shaped section 32, and a third elastic pin 33 adapted to extend into the notch 38 is provided on the wheel disc extension portion 20, where it should be noted that the size of the notch 38 is larger than the outer diameter of the third elastic pin 33, so that the position of the third elastic pin 33 in the notch 38 can be adjusted along with the change of the specific position of the limiting frame 30 relative to the frame, that is, for the limiting frame 30, the matching between the limiting frame 30 and the wheel disc is realized through the matching between the notch 38 and the third elastic pin 33, and this time, the third elastic pin 33 also plays a certain limiting role in the position adjustment of the limiting frame 30 relative to the frame. When the operating handle is rotated after the energy storage of the circuit breaker energy storage mechanism of the embodiment is completed, the notch 38 on the limiting frame 30 can pull the third elastic pin 33 on the extending part 20 of the wheel disc, so that the wheel disc and the cam 27 are pulled apart by a certain distance, the first roller 21 arranged on the extending part 20 of the wheel disc can not be in contact with the protruding section 271 of the cam 27, and when the operating handle is used for storing energy, the cam 27 is in an idle state relative to the driving assembly.
A raised bump 11 is arranged at the end part of the limiting frame 30 departing from the second roller 31; and a fourth elastic pin 10 suitable for corresponding to the lug 11 is arranged at the end part of the frame facing the lug 11; a second spring 35 is coupled between the projection 11 and the fourth elastic pin 10.
Specifically, the curvature of the arcuate section 32 is smaller than the curvature of the body portion 19 so that the retainer 30 itself does not form an obstruction to the rotation of the disk and cam plate 17. In the normal energy storage process of the circuit breaker energy storage mechanism of the embodiment, the limiting plate takes the pin shaft 3 as a fulcrum, and under the action of the second spring 35, the second roller 31 can be attached to the non-convex part on the cam plate 17, and because the acting force of the second spring 35 is not large, although the second roller 31 is attached to the cam plate 17, the normal rotation of the driving assembly is not affected. At this time, since the notches 38 of the retainer 30 are closely located with respect to the position of the disc, the third elastic pins 33 on the disc are also freely movable in the notches 38 during the reciprocating movement of the disc with respect to the cam 27 in the direction of moving away and approaching, without affecting the state of the retainer 30.
When the energy storage is completed, the convex portion 171 of the cam plate 17 follows the rotation of the cam plate 17, and when the convex portion 171 of the cam plate 17 rotates to the second roller 31, the convex portion 171 of the cam plate 17 is abutted by the second roller 31, the limiting frame 30 is rotated a distance in the direction away from the cam 27 under the action of the cam plate 17, and at this time, due to the cooperation between the notch 38 on the limiting frame 30 and the third elastic pin 33 on the wheel disc extension part 20, the limiting frame 30 can pull the third elastic pin 33 on the wheel disc in the process of rotating relative to the frame in the direction away from the cam 27, so that the wheel disc can rotate a certain angle along with the limiting frame 30 in the direction away from the cam 27, finally a certain distance is generated between the cam section 271 on the cam 27 and the first roller 21, and the cam section and the first roller can not be contacted continuously, in this way, the cam plate 17 and the pair of disks stop operating after the biasing force of the cam 27 is released. At the moment, the holding pawl 15 is clamped on the closing release 4, the breaker mechanism keeps an energy storage state, and when a closing button is pressed, an energy storage spring connected with the crank arm 13 releases energy.
Referring to fig. 8, in an alternative embodiment, the frame is formed by bending a 4mm cold-rolled steel plate, and the left side plate 1 and the right side plate 2 are formed by bending two sides of the frame while ensuring sufficient strength of the frame. Two groups of through holes are symmetrically arranged on the left side plate 1 and the right side plate 2, wherein one group of the through holes A is used for supporting and fixing the energy storage rotating shaft 12, the other group of the through holes B is used for installing the pin shaft 3, the front surface of the rack perpendicular to the left side plate 1 and the right side plate 2 is provided with a shaft sleeve 5, two roller bearings are embedded in the shaft sleeve 5, and the linkage rod 26 is arranged on the shaft sleeve 5. In addition, the left side plate 1 and the right side plate 2 are respectively connected with a 120-degree bending plate 96, and the upper surfaces of the bending plates are respectively provided with a small round hole 7 for fixing the second elastic pin 8. A bending plate 9 is further arranged between the bending plates respectively connected with the left side plate 1 and the right side plate 2, the bending plate 9 is simultaneously connected with the bending plates respectively connected with the left side plate 1 and the right side plate 2, and the bending plate 9 is firmly connected with the bending plates through a pair of second elastic pins 8 formed by corresponding to the first elastic pins 23 on the pair of extension parts 20. The fourth elastic pin 10 is disposed on the end surface of the bent plate 9 facing the projection 11.
The specific implementation principle of the circuit breaker energy storage mechanism related to the embodiment is as follows:
in an initial state: the boss 171 on the cam plate 17 is at the farthest position with respect to the second roller 31 on the retainer 30; when the operating handle is used for driving the operating rod 28 to rotate, the linkage rod 26 and the cam 27 rotate synchronously, when the convex section 271 of the cam 27 abuts against the first rollers 21 respectively arranged on the extending parts 20 of the pair of wheel discs, the pair of wheel discs communicated with the cam plate 17 can rotate towards the direction far away from the cam 27, the pair of wheel discs at the moment give a large radial acting force to the one-way bearing 16, so that the one-way bearing 16 is driven to rotate, the one-way bearing 16 further drives the energy storage rotating shaft 12 to rotate, and meanwhile, in the process, the first spring 25 is compressed. When the pair of the wheel disc and the cam plate 17 rotates a certain angle and the convex section 271 of the cam 27 leaves the first roller 21, the pair of the wheel disc and the cam plate 17 rotates toward the cam 27 under the returning force of the first spring 25 until the first roller 21 can contact the non-convex section 271 of the cam 27. Thus, during the continuous movement of the pair of wheel disc and cam plate 17 away from and close to the cam 27, the one-way bearing 16 drives the energy storage rotating shaft 12 to rotate towards the same direction, so as to drive the crank arm 13 on the energy storage rotating shaft 12 to rotate, the crank arm 13 compresses the energy storage spring to store energy until the energy storage process is completed, during the energy storage process, due to the acting force of the second spring 35 arranged between the limiting frame 30 and the frame, the second roller 31 on the limiting frame 30 only contacts with the non-convex part on the cam plate 17, and the convex part 171 on the cam plate 17 does not contact with the second roller 31 due to not rotating to the position of the second roller 31, in this case, for the energy storage process, during the continuous movement of the pair of wheel disc and cam plate 17 away from and close to the cam 27, the third elastic pin 33 moves in the notch 38 of the limiting frame 30, the driving force of position change for the limiting frame 30 is not generated during the movement of the cam plate 17 and the wheel disc.
As the stored energy approaches the end sound, when the stored energy is completed, the convex portion 171 of the cam plate 17 just moves to the position of the second roller 31, the convex portion 171 of the cam plate 17 is abutted by the second roller 31, and the rotational force of the cam plate 17 generates a certain force on the second roller 31, so that the retainer 30 rotates a certain distance in the direction away from the cam 27 under the action of the cam plate 17, and at this time, due to the cooperation between the notch 38 on the retainer 30 and the third elastic pin 33 on the extension portion 20 of the wheel disc, the retainer 30 can pull the third elastic pin 33 on the wheel disc in the process of rotating relative to the frame in the direction away from the cam 27, so that the wheel disc can rotate a certain angle in the direction away from the cam 27 along with the retainer 30, so that the cam segment 271 on the cam 27 cannot be continuously contacted with the first roller 21, in this way, the cam plate 17 and the pair of disks stop operating after the biasing force of the cam 27 is released. At the moment, the holding pawl 15 is clamped on the closing release 4, the breaker mechanism keeps an energy storage state, and when a closing button is pressed, an energy storage spring connected with the crank arm 13 releases energy.
Example 2:
on the basis of the circuit breaker energy storage mechanism of embodiment 1, this embodiment provides a cubical switchboard, includes: the circuit breaker energy storage mechanism of embodiment 1.
In this specification, the schematic representations of the terms are not necessarily referring to the same embodiment. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (10)
1. A circuit breaker energy storage mechanism, comprising: the energy storage device comprises a rack, an energy storage rotating shaft connected with the rack and a driving assembly suitable for driving the energy storage rotating shaft to rotate; wherein
The energy storage rotating shaft is erected in the rack;
the driving assembly comprises a one-way bearing sleeved on the energy storage rotating shaft, and a pair of symmetrically arranged wheel discs and a cam plate which are sleeved on the one-way bearing;
the cam plate is positioned between the pair of wheel discs and clamped by the pair of wheel discs; and
and the pair of wheel discs are respectively provided with a stress structure in one-to-one correspondence.
2. The circuit breaker energy storage mechanism according to claim 1, wherein one end of the energy storage rotating shaft extending out of the frame is coupled with a crank arm, and the other end of the energy storage rotating shaft extending out of the frame is coupled with a holding pawl.
3. The circuit breaker energy storage mechanism according to claim 1, wherein said wheel disc comprises a body portion of circular structure sleeved on said energy storage rotating shaft, and an extension portion integrally connected with said body portion;
the stress structure is arranged on the extension part; and
the stress structures respectively arranged on the extending parts of the pair of wheel discs are the same and are symmetrically arranged;
the stress structure comprises a front stress part and a rear stress part which are respectively arranged on two side end faces of the extension part of the same wheel disc, which are vertical to the axis direction of the energy storage rotating shaft; namely, the front stress part and the rear stress part are respectively positioned on two side end faces of the extension part, which are opposite to each other.
4. The circuit breaker energy storage mechanism of claim 3, wherein the front force-bearing portion employs a first roller; the first roller is connected with the extension part through a connecting frame; and
the rear stress part adopts a first elastic pin.
5. The circuit breaker energy storage mechanism of claim 4, wherein said drive assembly further comprises a spring structure adapted to mate with said first spring pin;
the elastic structure comprises a first spring with one end matched with the first elastic pin and a second elastic pin matched with the other end of the first spring; wherein
The second elastic pin is arranged on the part of the frame facing the first elastic pin;
the second elastic pin and the first elastic pin are arranged oppositely.
6. A circuit breaker energy storage mechanism according to any of claims 4 or 5, characterized in that the drive assembly further comprises a set of levers adapted to abut against the first roller;
the operating rod group comprises a linkage rod which is rotationally matched with the part of the machine frame facing the first roller, a cam which is arranged on the end part of the linkage rod facing the first roller, and an operating rod which is fixedly connected with the end part of the linkage rod far away from the cam; wherein
The operating rod is provided with a hollow installation cavity suitable for being matched and connected with the operating handle; and
the end of the cam facing the first roller is inclined with respect to the first roller, i.e. has a portion of a convex section adapted to abut against the first roller at the end of the cam facing the first roller.
7. The circuit breaker energy storage mechanism of claim 4, further comprising a limit stop assembly;
the limiting assembly comprises a limiting frame arranged on the rack and a second roller arranged on the limiting frame and suitable for being abutted against the protruding part of the cam plate.
8. The circuit breaker energy storage mechanism of claim 7 wherein the end of the restraint bracket facing the cam plate has a concave arcuate section;
the second roller is matched and connected with the arc-shaped section, and the end surface of the second roller facing the cam plate is protruded from the end surface of the arc-shaped section facing the cam plate; and
the part of the limiting frame, which is positioned at the bottom end of the arc-shaped section, is matched and connected with the rack through a pin shaft;
the part of the limiting frame, which is positioned at the top end of the arc-shaped section, is matched and connected with the extending parts of the pair of wheel discs through a third elastic pin;
the part of the limiting frame, which is positioned at the top end of the arc-shaped section, is provided with a notch, and the extension part of the wheel disc is provided with a third elastic pin which is suitable for extending into the notch.
9. The circuit breaker energy storage mechanism of claim 8, wherein a raised projection is provided on an end of the spacing frame facing away from the second roller; and
a fourth elastic pin suitable for corresponding to the lug is further arranged at the end part, facing the lug, of the rack;
and a second spring is matched between the lug and the fourth elastic pin.
10. A switchgear, comprising: the circuit breaker energy storage mechanism of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020453590.4U CN211350540U (en) | 2020-03-31 | 2020-03-31 | Circuit breaker energy storage mechanism and switch cabinet using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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