CN218482147U

CN218482147U - Vacuum contactor

Info

Publication number: CN218482147U
Application number: CN202222871537.8U
Authority: CN
Inventors: 赵显军; 周士田
Original assignee: Zhejiang Liyun Electric Co ltd
Current assignee: Zhejiang Liyun Electric Co ltd
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2023-02-14
Anticipated expiration: 2032-10-31

Abstract

A vacuum contactor. The problem of current vacuum contactor have combined floodgate spring to influence product life is solved. The vacuum arc extinguish chamber comprises a frame, a vacuum arc extinguish chamber body and a wiring bar, wherein the frame is provided with an operating mechanism, a transmission mechanism and an insulator, a moving contact and a static contact are arranged in the vacuum arc extinguish chamber body, the vacuum arc extinguish chamber body further comprises a switching-on and bouncing prevention device, a pull rod is arranged in the insulator, the pull rod is connected with the moving contact and used for driving the moving contact to move, the pull rod is provided with a first position for breaking the moving contact and the static contact when the vacuum arc extinguish chamber body is installed and a second position for driving the moving contact to move so that the moving contact is connected with the static contact, and the switching-on and bouncing prevention device is connected with the pull rod and used for driving the pull rod to tend to the second position. The beneficial effects of the utility model are that, the setting drive pull rod of preventing combined floodgate spring device tends to the second position for combined floodgate spring can not appear when moving contact and static contact, avoids moving, static contact damage, makes product long service life.

Description

Vacuum contactor

Technical Field

The utility model relates to an electric field, concretely relates to vacuum contactor.

Background

The vacuum contactor mainly comprises a vacuum arc-extinguishing chamber and an operating mechanism. The vacuum arc-extinguishing chamber has two functions of reliably extinguishing arc when normal working current is passed and working current is frequently cut off. The operating mechanism is composed of a closing coil with an iron core and an armature, and the armature is driven to act by electrifying or losing the coil, so that the contactor is closed or opened. However, the moving contact and the static contact in the vacuum arc extinguish chamber have the phenomenon of switching-on bounce when contacting, the switching-on bounce refers to the phenomenon that the moving contact of the circuit breaker is pushed away by a reaction force after colliding and contacting with the static contact and then contacted and pushed away, and in the switching-on bounce process, the contact is short in disconnection distance, electric arc cannot be extinguished, so that the electric abrasion of the contact is aggravated, the electric service life of the arc extinguish chamber is influenced, but the existence time of the contact is short and is far shorter than the electric arc burning time in the switching-on process. The most important hazard of bouncing within a certain range is the accelerated wear of the contacts of the arc-extinguishing chamber, which leads to a reduction of the electrical life of the arc-extinguishing chamber.

SUMMERY OF THE UTILITY MODEL

For solving the problem that current vacuum contactor has combined floodgate spring to influence product life among the background art, the utility model provides a vacuum contactor.

The technical scheme of the utility model is that: a vacuum contactor comprises a frame, a vacuum arc extinguish chamber and a wiring bar, wherein the frame is provided with an operating mechanism, a transmission mechanism and an insulator, the operating mechanism is connected with the insulator through the transmission mechanism, the vacuum arc extinguish chamber is internally provided with a moving contact and a fixed contact, and further comprises a switching-on and bouncing prevention device, a pull rod is arranged in the insulator, the pull rod is connected with the moving contact and used for driving the moving contact to move, the pull rod has a first position for breaking the moving contact and the fixed contact when being installed and a second position for driving the moving contact to move so that the moving contact is connected with the fixed contact, and the switching-on and bouncing prevention device is connected with the pull rod and used for driving the pull rod to tend to the second position.

The utility model discloses an improve, the anti-closing bounce device locate vacuum interrupter's the outside and be connected with the pull rod.

The utility model discloses an improvement, prevent combined floodgate spring device include the elastic component, elastic component one end be connected with vacuum interrupter, on the other end was fixed in the pull rod, the elastic component have the motion trend that the drive pull rod tends to its second position.

The utility model discloses an improvement, the elastic component have two, and two elastic components set up about vacuum interrupter symmetry.

The utility model discloses an improvement, the elastic component be connected with vacuum interrupter through fixed subassembly, the other end is connected with the pull rod through the fixed plate, fixed subassembly including solid fixed ring and mount, solid fixed ring cover locate the vacuum interrupter outdoor.

The utility model discloses an improvement, the frame on be equipped with a plurality of division board subassemblies, division board subassembly and frame mutually support and form the installation space that is used for holding vacuum interrupter, be equipped with the clearance between the adjacent division board subassembly.

The utility model discloses an improvement, division board subassembly on be equipped with the breach, the mount locate in the breach and by the level spacing, the line bank be fixed in on the mount.

The utility model discloses an improvement, the elastic component be the spring.

The utility model discloses an improvement, the pull rod be connected with the moving contact through the guide arm, the guide arm on be equipped with the flexible coupling that is connected with the line bank.

The utility model discloses an improvement, drive mechanism include the transfer line, operating device include control coil and with the armature of control coil looks adaptation, armature be connected with the transfer line and be used for driving the transfer line motion, the pull rod locate on the transfer line and drive its vertical motion by the transfer line.

The beneficial effects of the utility model are that, the setting drive pull rod of preventing combined floodgate spring device tends to the second position for combined floodgate spring can not appear when moving contact and static contact, avoids moving, static contact damage, makes product long service life. The utility model discloses simple structure still has, convenient assembling, and the action is reliable, advantages such as long service life.

Drawings

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

Fig. 2 is a schematic structural diagram of another direction of the embodiment of the present invention.

FIG. 3 is a schematic view of the separator assembly shown in FIG. 1 with the separator assembly removed.

Fig. 4 is a partially enlarged schematic view of fig. 3.

Fig. 5 is a schematic view of the structure of the baffle plate assembly of fig. 1.

In the figure, 1, frame; 11. a separator plate assembly; 111. a notch; 12. an installation space; 13. a gap; 2. a vacuum arc-extinguishing chamber; 3. a line bank; 4. an operating mechanism; 41. a control coil; 42. an armature; 5. a transmission mechanism; 51. a transmission rod; 6. an insulator; 61. a pull rod; 7. a switch-on bounce prevention device; 71. an elastic member; 72. a fixing component; 721. a fixing ring; 722. a fixed mount; 73. a fixing plate; 8. and (4) soft connection.

Detailed Description

The embodiments of the present invention will be further explained with reference to the drawings:

as shown in fig. 1 and fig. 2-5, a vacuum contactor includes a frame 1, a vacuum interrupter 2, a wiring bar 3, an operating mechanism 4, a transmission mechanism 5, and an insulator 6, where the operating mechanism 4 is connected to the insulator 6 through the transmission mechanism 5, a moving contact and a static contact are disposed in the vacuum interrupter 2, and a switching-on bounce device 7 is further included, a pull rod 61 is disposed in the insulator 6, the pull rod 61 is connected to the moving contact and used for driving the moving contact to move, the pull rod 61 has a first position where the moving contact and the static contact are separated when installed and a second position where the moving contact and the static contact are connected to each other by driving the moving contact to move, and the switching-on bounce device 7 is connected to the pull rod 61 and used for driving the pull rod 61 to approach to the second position. The beneficial effects of the utility model are that, the setting drive pull rod of preventing combined floodgate spring device tends to the second position for combined floodgate spring can not appear when moving contact and static contact, avoids moving, static contact damage, makes product long service life. The utility model discloses simple structure still has, convenient assembling, and the action is reliable, advantages such as long service life.

The anti-closing bouncing device 7 is arranged on the outer side of the vacuum arc-extinguishing chamber 2 and is connected with the pull rod 61. The device for preventing the closing and bouncing is arranged outside the vacuum arc-extinguishing chamber, is convenient to install, debug or replace and has simple structure.

The anti-closing bouncing device 7 comprises an elastic part 71, one end of the elastic part 71 is connected with the vacuum arc-extinguishing chamber 2, the other end of the elastic part 71 is fixed on the pull rod 61, and the elastic part 71 has a movement trend of driving the pull rod 61 to tend to the second position. Specifically, there are two elastic members 71, and the two elastic members 71 are symmetrically disposed about the vacuum interrupter 2. More specifically, the elastic member 71 is a spring. The structure enables the tension rod to be balanced in stress, so that the moving contact cannot bounce when being switched on, reliable connection is achieved, and the service life of a product is long.

The elastic member 71 is connected with the vacuum interrupter 2 through the fixing member 72, and the other end is connected with the pull rod 61 through the fixing plate 73, the fixing member 72 includes a fixing ring 721 and a fixing frame 722, and the fixing ring 721 is sleeved outside the vacuum interrupter 2. The elastic piece is convenient to mount and fix, debugging or replacement is convenient, and the structure is simple.

The vacuum arc extinguishing chamber is characterized in that a plurality of isolation plate assemblies 11 are arranged on the frame 1, the isolation plate assemblies 11 and the frame 1 are matched with each other to form an installation space 12 for accommodating the vacuum arc extinguishing chamber 2, and a gap 13 is formed between every two adjacent isolation plate assemblies 11. The structure enables different arc extinguishing chambers to be separated and not to influence each other.

The isolating plate assembly 11 is provided with a notch 111, the fixing frame 722 is arranged in the notch 111 and horizontally limited, and the wiring bar 3 is fixed on the fixing frame 722. The setting of breach carries on spacingly to the line bank to make the spacing convenience of product reliable, avoid the relative distance between the different looks line bank to change, make product property ability stable, the security performance is higher.

The pull rod 61 is connected with the moving contact through a guide rod, and the guide rod is provided with a flexible connection 8 connected with the wiring bar 3. The structure ensures that the circuit is conveniently and reliably connected, and particularly, the flexible connection of the door lock can be fixed on the guide rod and also can be arranged on the pull rod.

The transmission mechanism 5 comprises a transmission rod 51, the operating mechanism 4 comprises a control coil 41 and an armature 42 matched with the control coil 41, the armature 42 is connected with the transmission rod 51 and used for driving the transmission rod 51 to move, and the pull rod 61 is arranged on the transmission rod 51 and driven by the transmission rod 51 to vertically move. The structure can reliably drive the transmission rod to act through the control coil, so that the pull rod is controlled to move up and down, and the moving contact and the static contact are driven to be communicated or disconnected.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" 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 "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. 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.

The skilled person should know that: although the present invention has been described according to the above embodiments, the inventive idea is not limited to this embodiment, and any application of the inventive idea is also included in the scope of the patent right protection.

Claims

1. A vacuum contactor comprises a frame (1), a vacuum arc-extinguishing chamber (2) and a wiring bar (3), wherein an operating mechanism (4), a transmission mechanism (5) and an insulator (6) are arranged on the frame (1), the operating mechanism (4) is connected with the insulator (6) through the transmission mechanism (5), a moving contact and a static contact are arranged in the vacuum arc-extinguishing chamber (2), the vacuum contactor is characterized by further comprising a switch-on bounce device (7), a pull rod (61) is arranged in the insulator (6), the pull rod (61) is connected with the moving contact and used for driving the moving contact to move, the pull rod (61) is provided with a first position enabling the moving contact and the static contact to be disconnected during installation and a second position enabling the moving contact and the static contact to be connected through driving of the moving contact, and the switch-on bounce device (7) is connected with the pull rod (61) and used for driving the pull rod (61) to tend to the second position.

2. Vacuum contactor according to claim 1, characterized in that said anti-closing bouncing means (7) is arranged outside the vacuum interrupter (2) and connected to the tie rod (61).

3. A vacuum contactor as claimed in claim 1, characterized in that said anti-closing bouncing means (7) comprises an elastic member (71), said elastic member (71) being connected to the vacuum interrupter (2) at one end and fixed to the pull rod (61) at the other end, said elastic member (71) having a tendency to drive the pull rod (61) towards its second position.

4. A vacuum contact according to claim 3, characterized in that there are two resilient members (71), and that the two resilient members (71) are arranged symmetrically with respect to the vacuum interrupter chamber (2).

5. The vacuum contactor according to claim 3, wherein the elastic member (71) is connected to the vacuum interrupter (2) through a fixing member (72), and the other end is connected to the pull rod (61) through a fixing plate (73), the fixing member (72) includes a fixing ring (721) and a fixing frame (722), and the fixing ring (721) is sleeved outside the vacuum interrupter (2).

6. A vacuum contactor as claimed in claim 4, wherein said frame (1) is provided with a plurality of insulating plate members (11), said insulating plate members (11) and said frame (1) cooperate to form a mounting space (12) for accommodating said vacuum interrupter (2), and a gap (13) is provided between adjacent insulating plate members (11).

7. The vacuum contactor as claimed in claim 5, wherein the insulation board assembly (11) is provided with a notch (111), the fixing frame (722) is arranged in the notch (111) and horizontally limited, and the terminal block (3) is fixed on the fixing frame (722).

8. A vacuum contactor as claimed in claim 3, characterized in that said elastic member (71) is a spring.

9. A vacuum contactor as claimed in claim 1, characterized in that the tie-rods (61) are connected to the moving contacts by means of guide rods, which are provided with flexible connections (8) to the terminal block (3).

10. The vacuum contactor as claimed in claim 1, wherein the transmission mechanism (5) comprises a transmission rod (51), the operating mechanism (4) comprises a control coil (41) and an armature (42) adapted to the control coil (41), the armature (42) is connected to the transmission rod (51) and is used for driving the transmission rod (51) to move, and the pull rod (61) is disposed on the transmission rod (51) and is driven by the transmission rod (51) to move vertically.