Contact locking assembly of wind power photovoltaic circuit breaker

Abstract

The utility model discloses a contact locking assembly of a wind power and photovoltaic circuit breaker, relates to the field of circuit breakers, and aims to solve the problems that in the prior art, a static contact piece in an existing circuit breaker is kept fixed, linkage is realized by moving and contacting the static contact piece through a movable contact rod, but the movable contact rod is separated from the static contact piece when shaking occurs, and the static contact piece cannot be locked. And normal use of the circuit breaker is influenced. A transmission mechanism is arranged in the circuit breaker, the upper end of the other side of the transmission mechanism is telescopically connected with a movable contact rod, the upper end of the circuit breaker is fixedly connected with an upper wiring part, a rectangular opening is formed between the middle of the lower end of the upper wiring part and the interior of the circuit breaker, and a conductive fixing shaft is fixedly arranged in the rectangular opening. The upper end of the conductive fixing shaft is fixedly connected with a static contact piece, the lower end of the conductive fixing shaft is rotatably connected with a movable contact piece, the upper end surface in the circuit breaker and one side of the movable contact piece are fixedly connected with a fixing pipe, and the interior of the fixing pipe is movably connected with a telescopic rod.

Description

Technical Field

[0001] The utility model relates to the field of circuit breakers, in particular to a contact locking assembly of a circuit breaker for wind power and photovoltaic power generation. Background Art

[0002] A circuit breaker is a switching device that can close, carry and disconnect current under normal circuit conditions and can close, carry and disconnect current under abnormal circuit conditions within a specified time. Circuit breakers are divided into high-voltage circuit breakers and low-voltage circuit breakers according to their scope of use. The boundary between high and low voltage is relatively vague, and those above 3kV are generally called high-voltage electrical appliances. Circuit breakers can be used to distribute electrical energy, start asynchronous motors infrequently, and protect power lines and motors. When they have serious overloads or short circuits and undervoltage faults, they can automatically cut off the circuit. Its function is equivalent to a combination of a fuse-type switch and an over- and under-temperature relay. Moreover, there is generally no need to change components after disconnecting the fault current. It has been widely used.

[0003] For example, the authorization announcement number CN 114496664 B, a circuit breaker device, includes: a circuit breaker body, a shell, a shield and a floating part. The shell is sleeved on the outside of the circuit breaker body; the shield is sleeved on the outside of the shell; and the opposite ends of the floating part are respectively connected to the inner wall of the shield and the outer wall of the shell. The above-mentioned circuit breaker device isolates the circuit breaker body from the outside world through the shell and the shield; due to the presence of the floating part, there is a buffer space between the shell and the shield, so that the circuit breaker body can withstand large external force impacts, protect the normal operation of the circuit breaker body, and extend the service life of the circuit breaker body. The circuit breaker device can isolate the circuit breaker body from a certain degree of external interference, and can be used in environments such as high temperature, humidity, flammable and explosive environments.

[0004] Since the distribution box for protecting the circuit breaker in the wind power and photovoltaic system is usually installed outdoors, it has been vibrated by external factors. The static contact piece in the existing circuit breaker remains fixed, and the movable contact rod moves to contact the static contact piece to achieve linkage. However, when shaking occurs, the movable contact rod and the static contact piece are separated, affecting the normal use of the circuit breaker. Therefore, the market urgently needs to develop a contact locking assembly for wind power and photovoltaic circuit breakers to help people solve the existing problems. Utility Model Content

[0005] The purpose of the present utility model is to provide a contact locking assembly for a wind power and photovoltaic circuit breaker, so as to solve the problem in the prior art mentioned above that in which the static contact piece in the existing circuit breaker remains fixed and the movable contact rod moves to contact the static contact piece to achieve linkage, but when shaking occurs, the movable contact rod and the static contact piece are separated, affecting the normal use of the circuit breaker.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a contact locking assembly for a circuit breaker for wind power and photovoltaic power generation, comprising a circuit breaker, wherein a transmission mechanism is provided inside the circuit breaker, a rotating member is connected to the lower end of one side of the transmission mechanism, and a moving contact rod is telescopically connected to the upper end of the other side of the transmission mechanism, the upper end of the circuit breaker is fixedly connected to an upper wiring part, a wiring terminal is provided in the middle part of the upper wiring part, a rectangular opening is provided between the middle part of the lower end of the upper wiring part and the interior of the circuit breaker, a conductive fixed shaft is fixedly provided inside the rectangular opening, a static contact piece is fixedly connected to the upper end of the conductive fixed shaft, a movable contact piece is rotatably connected to the lower end of the conductive fixed shaft, the lower end of the movable contact piece extends to one side of the moving contact rod inside the circuit breaker, a fixed tube is fixedly connected to the upper end surface of the circuit breaker and on one side of the movable contact piece, a telescopic rod is movably connected to the interior of the fixed tube, and the lower end of the telescopic rod extends out of the fixed tube and is rotatably connected to a ball bearing.

[0007] Preferably, an arc extinguishing assembly is provided inside the circuit breaker and on one side of the transmission mechanism, and a lower connecting portion is fixedly connected to the lower end of the circuit breaker.

[0008] Preferably, the upper end of the static contact piece extends to the interior of the upper wiring portion and is inserted into the interior of the wiring terminal, and the front and rear ends of the lower end of the static contact piece are fixedly connected with fixed connectors.

[0009] Preferably, the front and rear ends of the conductive fixed shaft pass through the middle parts of the two fixed connectors and are fixedly connected.

[0010] Preferably, a limit block is fixedly provided on the upper end of one side of the movable contact piece.

[0011] Preferably, a rotating connector is fixedly connected to the middle of the upper end of the movable contact piece, and the middle of the conductive fixed shaft passes through the middle of the rotating connector.

[0012] Preferably, a spring is provided inside the fixing tube, a circular groove is provided at the lower end of the telescopic rod, and the ball is inserted into the circular groove for rolling connection.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. In this utility model, a spring is provided inside the fixed tube through the setting of the movable contact piece. The movable contact rod is extended to push and drive the movable contact piece to rotate. When the movable contact piece rotates, it presses the telescopic rod upward, so that the telescopic rod is retracted into the fixed tube and the spring is compressed. The spring keeps the movable contact piece in a state of rotating downward, so that the movable contact piece and the movable contact rod remain in contact, preventing separation due to vibration, which affects the normal use of the circuit breaker.

[0015] 2. In this utility model, a circular groove is provided at the lower end of the telescopic rod through the setting of the ball, the ball is stuck in the circular groove and rolled in connection, the rear end of the movable contact piece contacts the ball at the lower end of the telescopic rod, and the ball ensures the smooth sliding of the lower end of the telescopic rod on the rear end of the movable contact piece.

[0016] 3. In this utility model, through the setting of the conductive fixed shaft, the front and rear ends of the conductive fixed shaft respectively pass through the middle of the two fixed connectors and are fixedly connected, so that the static contact piece remains fixed, and the middle of the upper end of the movable contact piece is fixedly connected with a rotating connector. The middle of the conductive fixed shaft passes through the middle of the rotating connector, so that the movable contact piece and the static contact piece are electrically connected through the conductive fixed shaft, and the movable contact piece is rotated through the rotating connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front view of a contact locking assembly for a wind power and photovoltaic circuit breaker according to the present invention;

[0018] Figure 2 It is a front view of the utility model;

[0019] Figure 3 This is the main sectional view of the utility model;

[0020] Figure 4 This is a side sectional view of the conductive fixed shaft of the present utility model.

[0021] In the figure: 1. Circuit breaker; 101. Transmission mechanism; 102. Rotating part; 103. Moving contact rod; 104. Arc extinguishing assembly; 2. Upper wiring part; 201. Wiring terminal; 3. Rectangular opening; 301. Conductive fixed shaft; 4. Static contact piece; 401. Fixed connector; 5. Movable contact piece; 501. Rotating connector; 502. Limit block; 6. Fixed tube; 601. Spring; 602. Telescopic rod; 603. Circular groove; 604. Ball; 7. Lower wiring part. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] See also Figure 1-4The utility model provides an embodiment: a contact locking assembly for a wind power photovoltaic circuit breaker, comprising a circuit breaker 1, a transmission mechanism 101 is provided inside the circuit breaker 1, a rotating member 102 is connected to the lower end of one side of the transmission mechanism 101, a moving contact rod 103 is telescopically connected to the upper end of the other side of the transmission mechanism 101, an upper wiring part 2 is fixedly connected to the upper end of the circuit breaker 1, a wiring terminal 201 is provided in the middle of the upper wiring part 2, and a rectangular opening 3 is provided between the middle of the lower end of the upper wiring part 2 and the inside of the circuit breaker 1. A conductive fixed shaft 301 is fixedly provided inside the rectangular opening 3, and a static contact piece 4 is fixedly connected to the upper end of the conductive fixed shaft 301. A movable contact piece 5 is rotatably connected to the lower end of the conductive fixed shaft 301. The lower end of the movable contact piece 5 extends to one side of the movable contact rod 103 inside the circuit breaker 1. A fixed tube 6 is fixedly connected to the upper end surface of the circuit breaker 1 and on one side of the movable contact piece 5. A telescopic rod 602 is movably connected inside the fixed tube 6. The lower end of the telescopic rod 602 extends out of the fixed tube 6 and is rotatably connected to a ball bearing 604.

[0024] Furthermore, an arc extinguishing assembly 104 is provided inside the circuit breaker 1 and on one side of the transmission mechanism 101. The lower end of the circuit breaker 1 is fixedly connected to the lower wiring portion 7. When the rotating member 102 rotates, the transmission mechanism 101 transmits the transmission to cause the moving contact rod 103 to extend and contact the movable contact piece 5, thereby achieving circuit connection.

[0025] Furthermore, the upper end of the static contact piece 4 extends to the interior of the upper wiring part 2 and is inserted into the interior of the wiring terminal 201. The front and rear ends of the lower end of the static contact piece 4 are fixedly connected with fixed connectors 401, so that after the external wiring is inserted into the wiring terminal 201, it contacts the static contact piece 4 to achieve electrical connection.

[0026] Furthermore, the front and rear ends of the conductive fixed shaft 301 pass through the middle of the two fixed connectors 401 and are fixedly connected, so that the static contact piece 4 remains fixed.

[0027] Furthermore, a limit block 502 is fixedly provided on the upper end of one side of the movable contact piece 5 .

[0028] Furthermore, a rotating connector 501 is fixedly connected to the middle of the upper end of the movable contact piece 5, and the middle of the conductive fixed shaft 301 passes through the middle of the rotating connector 501, so that the movable contact piece 5 and the static contact piece 4 are electrically connected through the conductive fixed shaft 301, so that the movable contact piece 5 can rotate through the rotating connector 501.

[0029] Furthermore, a spring 601 is provided inside the fixed tube 6, which extends through the movable contact rod 103 to push and drive the movable contact piece 5 to rotate. When the movable contact piece 5 rotates, it presses the telescopic rod 602, so that the telescopic rod 602 is retracted into the fixed tube 6 and compresses the spring 601. The spring 601 keeps the movable contact piece 5 in a state of pushing it to rotate downward, so that the movable contact piece 5 and the movable contact rod 103 remain in contact with each other to prevent separation due to vibration, which affects the normal use of the circuit breaker 1. A circular groove 603 is provided at the lower end of the telescopic rod 602, and the ball 604 is inserted into the circular groove 603 for rolling connection. The rear end of the movable contact piece 5 contacts the ball 604 at the lower end of the telescopic rod 602, and the ball 604 ensures the smooth sliding of the lower end of the telescopic rod 602 on the rear end of the movable contact piece 5.

[0030] Working Principle: During use, first insert the external wire into the terminal block 201 inside the upper wiring section 2, bringing the wire into contact with the static contact piece 4 to establish an electrical connection. When the circuit breaker 1 receives a closing signal, the rotating member 102 rotates, and through the transmission mechanism 101, the moving contact rod 103 extends and contacts the movable contact piece 5. As the moving contact rod 103 extends, it pushes the movable contact piece 5 to rotate about the conductive fixed shaft 301. As the movable contact piece 5 rotates, the rear side of its upper end contacts the ball bearing 604 at the lower end of the telescopic rod 602, pushing the telescopic rod 602 upward along the interior of the fixed tube 6 and compressing the spring 601. At this point, the lower end of the movable contact piece 5 is tightly fitted with the moving contact rod 103, completing the circuit connection. At the same time, spring 601 remains compressed, exerting downward force on movable contact piece 5, ensuring close contact between movable contact piece 5 and movable contact rod 103. This prevents separation of movable contact piece 5 from movable contact rod 103 even when circuit breaker 1 is subject to external vibration, ensuring normal operation of circuit breaker 1. When circuit breaker 1 receives a disconnect signal, transmission mechanism 101 retracts movable contact rod 103, and movable contact piece 5 returns to its original position under the action of spring 601, disconnecting the circuit.

[0031] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A contact locking assembly for a wind power and photovoltaic circuit breaker, comprising a circuit breaker (1), characterized in that: The circuit breaker (1) is provided with a transmission mechanism (101) inside, the lower end of one side of the transmission mechanism (101) is connected to a rotating member (102), the upper end of the other side of the transmission mechanism (101) is telescopically connected to a moving contact rod (103), the upper end of the circuit breaker (1) is fixedly connected to an upper wiring portion (2), a wiring terminal (201) is provided in the middle of the upper wiring portion (2), a rectangular opening (3) is provided between the middle of the lower end of the upper wiring portion (2) and the inside of the circuit breaker (1), and a conductive fixed shaft (30) is fixedly provided in the rectangular opening (3). 1), the upper end of the conductive fixed shaft (301) is fixedly connected to a static contact piece (4), the lower end of the conductive fixed shaft (301) is rotatably connected to a movable contact piece (5), the lower end of the movable contact piece (5) extends to one side of a movable contact rod (103) inside the circuit breaker (1), a fixed tube (6) is fixedly connected to the upper end surface inside the circuit breaker (1) and on one side of the movable contact piece (5), a telescopic rod (602) is movably connected inside the fixed tube (6), and the lower end of the telescopic rod (602) extends out of the fixed tube (6) and is rotatably connected to a ball (604).

2. The contact locking assembly of a wind power and photovoltaic circuit breaker according to claim 1, characterized in that: An arc extinguishing assembly (104) is provided inside the circuit breaker (1) and on one side of the transmission mechanism (101), and a lower connecting portion (7) is fixedly connected to the lower end of the circuit breaker (1).

3. The contact locking assembly of a wind power and photovoltaic circuit breaker according to claim 1, characterized in that: The upper end of the static contact piece (4) extends to the interior of the upper wiring portion (2) and is inserted into the interior of the wiring terminal (201), and the front and rear ends of the lower end of the static contact piece (4) are fixedly connected to fixed connectors (401).

4. The contact locking assembly of a wind power and photovoltaic circuit breaker according to claim 3, characterized in that: The front and rear ends of the conductive fixed shaft (301) respectively pass through the middle parts of the two fixed connectors (401) and are fixedly connected.

5. The contact locking assembly of a wind power and photovoltaic circuit breaker according to claim 1, characterized in that: A limiting block (502) is fixedly provided on the upper end of one side of the movable contact piece (5).

6. The contact locking assembly of a wind power and photovoltaic circuit breaker according to claim 1, characterized in that: A rotating connector (501) is fixedly connected to the middle of the upper end of the movable contact piece (5), and the middle of the conductive fixed shaft (301) passes through the middle of the rotating connector (501).

7. The contact locking assembly of a wind power and photovoltaic circuit breaker according to claim 1, characterized in that: A spring (601) is provided inside the fixed tube (6), a circular groove (603) is provided at the lower end of the telescopic rod (602), and the ball (604) is inserted into the circular groove (603) for rolling connection.

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