Contact system of dual-power automatic change-over switch

Abstract

The utility model relates to the technical field of dual-power automatic change-over switches, in particular to a dual-power automatic change-over switch contact system, which comprises a base plate, a first contact chamber connected with the base plate and a second contact chamber connected with the base plate. The chassis is internally provided with a transmission structure which is connected with the chassis and can control the first contact chamber and the second contact chamber to carry out switching-on and switching-off operations. Compared with the prior art, the double-power-supply automatic change-over switch contact system can effectively solve the technical problems that an existing product adopts two groups of transmission shafts to respectively control closing and opening of two groups of contacts of a frequently-used power supply and a standby power supply, the cost is high, and the size is large. The three-position switch has the advantages of being small in size, simple in structure and simple and convenient in switching control mode, and switching among a common position, a standby position and a double-branch position of the switch is achieved through a group of main transmission shafts.

Description

Technical Field

[0001] The utility model relates to the technical field of dual power automatic transfer switches, in particular to a dual power automatic transfer switch contact system. Background Art

[0002] With the development of economy, some industrial and civil buildings have higher and higher requirements on the reliability and continuity of power supply. These important power-using places must be equipped with two or more power supplies, or use backup generator sets. When the normal power supply fails, the backup power supply can be put into use quickly after the normal power supply is cut off. The automatic transfer switch (ATSE) is a switch electrical appliance that meets such requirements and occasions.

[0003] A dual power automatic transfer switch contact system contains three working positions, including the normal power closing position, the standby power closing position and the double-off position (two power disconnection position); when switching power in normal work, it can be set to stay in the double-off position for a period of time to avoid the impact of impact current on the main circuit load and the transfer switch electrical appliance. In case of emergency or when the line needs to be inspected and maintained, the two power supplies can be placed in the disconnected position and locked to ensure the safety of personnel and line equipment.

[0004] In order to realize the above three working positions, the operation and contact system structure of the prior art are too complicated, and two sets of transmission shafts are often used to control the closing and opening of the two sets of contacts of the normal power supply and the backup power supply respectively, resulting in high cost and large size.

[0005] In view of the above-mentioned defects in the prior art, the utility model aims to solve the technical problem that the contact system needs to arrange two sets of transmission shafts to respectively control the connection and separation of the two sets of contacts of the normal power supply and the backup power supply, which leads to high cost and large volume. Utility Model Content

[0006] Technical issues solved

[0007] In view of the deficiencies in the prior art, the utility model provides a dual power automatic transfer switch contact system, which solves the problems raised in the above background technology.

[0008] Technical Solution

[0009] To achieve the above purpose, the utility model is implemented through the following technical solutions: a dual power automatic transfer switch contact system, including a chassis, a first contact chamber connected to the chassis is provided on the chassis, a second contact chamber connected to the chassis is provided on the chassis, and a transmission structure connected to the chassis and capable of controlling the first contact chamber and the second contact chamber to perform closing and opening operations is provided in the chassis. The solution is mainly composed of a transmission system, a first contact chamber, a second contact chamber, and a chassis.

[0010] Furthermore, the chassis includes a base with a plurality of grooves therein, an upper turntable and a lower disc that can rotate along the inside of the base, and a limit slider that can move and be inserted into the groove is provided between the upper turntable and the lower disc.

[0011] Furthermore, the base is provided with grooves arranged in a circular array, the upper turntable and the lower disc are symmetrically distributed in the base, and the upper turntable and the lower disc are provided with limiting sliders that can slide along the slide groove between the upper turntable and the lower disc.

[0012] Furthermore, there are six grooves in the base, and a spring that can be connected to a limit slider is provided in the slide groove between the upper turntable and the lower disc, and the spring can push the limit slider to move. There are four limit sliders, and the four limit sliders are arranged in a circular manner in the slide groove between the upper turntable and the lower disc in sequence. A cover plate that can be used to limit the upper turntable and the lower disc is provided above the base. The base is provided with six grooves arranged in a circular array in sequence, which can correspond to the common position, the standby position and the double split position respectively. Four limit sliders are provided between the upper turntable and the lower disc, and the movement of the limit slider can be limited by the spring. When one end of the main transmission shaft is inserted into the upper turntable and the lower disc in the base and can drive the upper turntable and the lower disc to rotate, when the limit slider enters the groove corresponding to the common standby and double split of the base, the spring is released to ensure that the contact system is locked in the common position, the standby position or the double split position.

[0013] Furthermore, the transmission structure includes a bracket, in which a main transmission shaft capable of rotation is provided, the main transmission shaft is provided with a common driven shaft and a spare driven shaft capable of rotation, the common driven shaft is provided with a fan-shaped bumper A, the spare driven shaft is provided with a fan-shaped bumper B, and the main transmission shaft can control the first contact chamber and the second contact chamber to perform closing and opening operations through the fan-shaped bumper A and the fan-shaped bumper B. The transmission structure is provided with a main transmission shaft, one end of the main transmission shaft extends out of the transmission system and is connected to the operating mechanism, the main transmission shaft is provided with two sets of common and spare driven shafts, the driven shaft is provided with a fan-shaped bumper, the common driven shaft fan-shaped bumper and the spare driven shaft fan-shaped bumper are distributed in positive and negative symmetry, when the main transmission shaft is actuated, the common closing and opening operations of the two contact chambers are controlled by the fan-shaped bumpers of the two sets of common and spare driven shafts, and the fan-shaped bumpers of the driven shafts distributed in positive and negative symmetry ensure that the two power supplies cannot be closed at the same time. The fan-shaped collision block of the common driven shaft and the fan-shaped collision block of the spare driven shaft form an angle. When the main transmission shaft moves to the angle position, the common and spare contact disconnect switch is in the double-open position, and the load side is powered off.

[0014] Furthermore, the commonly used driven shaft and the spare driven shaft are arranged on the main transmission shaft in sequence, the fan-shaped impact block A and the fan-shaped impact block B are arranged in a positive and negative symmetrical distribution, the fan-shaped impact block A is composed of two arc blocks with a gap between the two arc blocks, and the structure of the fan-shaped impact block B is identical to that of the fan-shaped impact block A.

[0015] Furthermore, the rotation of the upper turntable and the lower disc is driven by a main transmission shaft.

[0016] Further, the first contact chamber includes a base, a plurality of contact mounting grooves are provided in the base, a static contact which can be sequentially installed in the contact mounting grooves is provided in the base, a moving contact is connected to the incoming and outgoing ends of the static contact, and a moving contact support which can limit the moving contact is provided in the base. The contact chamber is composed of a base, a static contact, a moving contact assembly, an energy storage spring, and a cover plate.

[0017] Furthermore, an energy storage spring that can be connected to the static contact is provided in the contact installation groove, and a cover plate that can be connected to the base and is used to limit the static contact and the moving contact is provided on the outside of the base. The static contact input terminal and the output terminal are connected through the moving contact, and an energy storage spring is provided under the moving contact. When the spring is released, the moving contact is lifted to disconnect the moving contact from the static contact, and the moving contact remains connected to the static contact when the spring stores energy. In order to ensure the safe and reliable connection between the moving and static contacts, the moving contact provides downward pressure through the fan-shaped collision block on the driven shaft to prevent the contact from bouncing due to electrical repulsion and ensure the dynamic stability of the contact.

[0018] Furthermore, the static contacts are installed in the contact installation slots and distributed in the vertical direction. The static contacts adopt a special-shaped row design. The copper bars are vertically fixed at both ends of the bottom of the base and the extended part of the copper bars is transformed from vertical distribution to horizontal distribution. Four contact installation slots in a linear uniform array are provided in the base. The first contact chamber and the second contact chamber have the same structure and are symmetrically distributed on both sides of the transmission structure. The static contacts adopt a special-shaped row design, and the extended part of the copper bars is transformed from vertical distribution to horizontal distribution, which is convenient for users to wire on site.

[0019] Compared with the prior art, the dual power automatic transfer switch contact system can effectively solve the technical problems of the prior art that the two sets of transmission shafts are used to control the opening and closing of the two sets of contacts of the common power supply and the standby power supply respectively, which is high in cost and large in size. The switch is switched between the three positions of common, standby and double opening by a set of main transmission shafts. The utility model has the characteristics of small size, simple structure and simple switching control method. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional schematic diagram of the appearance of the utility model;

[0021] Figure 2 This is a schematic diagram of the explosion of the contact chamber of the utility model;

[0022] Figure 3 It is an explosion diagram of the transmission system of the utility model;

[0023] Figure 4 It is a schematic diagram of the explosion of the chassis of the utility model.

[0024] In the figure: 1. first contact chamber; 101. base; 1011. contact mounting groove; 102. moving contact; 103. energy storage spring; 104. static contact; 105. cover plate; 106. moving contact support; 2. second contact chamber; 3. transmission structure; 301. bracket; 302. main transmission shaft; 303. common driven shaft; 3031. fan-shaped collision block A; 304. spare driven shaft; 3041. fan-shaped collision block B; 4. chassis; 401. cover plate; 402. upper turntable; 403. limit slider; 404. spring; 405. lower disc; 406. base; 4061. groove. DETAILED DESCRIPTION

[0025] 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 of the embodiments.

[0026] See also Figures 1 to 4The utility model provides a technical solution: a dual power automatic transfer switch contact system, including a chassis 4, the chassis 4 includes a base 406, the base 406 is provided with a plurality of grooves 4061, the base 406 is provided with an upper turntable 402 and a lower disc 405 that can rotate along the inside of the base 406, a limit slider 403 that can move and can be inserted into the groove 4061 is provided between the upper turntable 402 and the lower disc 405, the number of the grooves 4061 in the base 406 is six, and a slide groove between the upper turntable 402 and the lower disc 405 is provided A spring 404 that can be connected to the limit slider 403 and the spring 404 can push the limit slider 403 to move. The number of the limit sliders 403 is four, and the four limit sliders 403 are arranged in a circular manner in the slide groove between the upper turntable 402 and the lower disc 405 in sequence. A cover plate 401 that can be used to limit the upper turntable 402 and the lower disc 405 is provided above the base 406. The base 406 is provided with grooves 4061 arranged in a circular manner in sequence. The upper turntable 402 and the lower disc 405 are symmetrically distributed in the base 406. 2 and the lower disc 405 are provided with a limit slider 403 that can slide along the slide groove between the upper rotating disc 402 and the lower disc 405, the chassis 4 is provided with a first contact chamber 1 connected to the chassis 4, the first contact chamber 1 includes a base 101, the base 101 is provided with a plurality of contact mounting grooves 1011, the base 101 is provided with a stationary contact 104 that can be sequentially installed in the contact mounting grooves 1011, the inlet end and the outlet end of the stationary contact 104 are connected to the moving contact 102, and the base 101 is provided with a moving contact support 1 that can limit the moving contact 102. 06. An energy storage spring 103 that can be connected to a static contact 104 is provided in the contact mounting groove 1011. A cover plate 105 that can be connected to the base 101 and is used to limit the static contact 104 and the moving contact 102 is provided on the outside of the base 101. The static contact 104 is installed in the contact mounting groove 1011 and distributed in a vertical direction. The static contact 104 adopts a special-shaped row design. The copper row is vertically fixed at both ends of the bottom of the base 101 and the protruding part of the copper row is converted from a vertical distribution to a horizontal distribution. Four contact mounting grooves 1011 in a linear uniform array are provided in the base 101.The first contact chamber 1 and the second contact chamber 2 have the same structure and are symmetrically distributed on both sides of the transmission structure 3. The chassis 4 is provided with the second contact chamber 2 connected to the chassis 4. The chassis 4 is provided with a transmission structure 3 connected to the chassis 4 and capable of controlling the first contact chamber 1 and the second contact chamber 2 to perform closing and opening operations. The transmission structure 3 includes a bracket 301, a main transmission shaft 302 capable of rotation is provided in the bracket 301, a common driven shaft 303 and a spare driven shaft 304 capable of rotation are provided on the main transmission shaft 302, a fan-shaped collision block A3031 is provided on the common driven shaft 303, and a fan-shaped collision block A3031 is provided on the spare driven shaft 304. Block B3041, the main transmission shaft 302 can control the first contact chamber 1 and the second contact chamber 2 to perform closing and opening operations through the fan-shaped collision block A3031 and the fan-shaped collision block B3041, the common driven shaft 303 and the spare driven shaft 304 are arranged on the main transmission shaft 302 in sequence, the fan-shaped collision block A3031 and the fan-shaped collision block B3041 are arranged in positive and negative symmetric distribution, the fan-shaped collision block A3031 is composed of two arc blocks and a gap is left between the two arc blocks, the fan-shaped collision block B3041 has the same structure as the fan-shaped collision block A3031, and the rotation of the upper turntable 402 and the lower disc 405 is driven by the main transmission shaft 302. ;

[0027] The electrical components mentioned in this article are all connected to an external main controller and 380V commercial power, and the main controller can be a conventional known device for control such as a computer.

[0028] In the description of this specification, the terms "connect", "install", "fix", "set", etc. are understood in a broad sense. For example, "connection" can be a fixed connection or an indirect connection through an intermediate component without affecting the relationship between components and the technical effect. It can also be an integral connection or a partial connection. As in this example, for ordinary technicians in this field, the specific meanings of the above terms in this utility model or utility model can be understood according to the specific circumstances.

[0029] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A dual power automatic transfer switch contact system, characterized in that: The invention comprises a chassis (4), wherein a first contact chamber (1) connected to the chassis (4) is provided on the chassis (4), a second contact chamber (2) connected to the chassis (4) is provided on the chassis (4), and a transmission structure (3) connected to the chassis (4) and capable of controlling the first contact chamber (1) and the second contact chamber (2) to perform closing and opening operations is provided in the chassis (4).

2. A dual power automatic transfer switch contact system according to claim 1, characterized in that: The chassis (4) comprises a base (406), a plurality of grooves (4061) being provided in the base (406), an upper turntable (402) and a lower disc (405) being provided in the base (406) and being capable of rotating along the interior of the base (406), and a limit slider (403) being movable and capable of being inserted into the grooves (4061) being provided between the upper turntable (402) and the lower disc (405).

3. A dual power automatic transfer switch contact system according to claim 2, characterized in that: The base (406) is provided with grooves (4061) arranged in a circular array in sequence, the upper turntable (402) and the lower disc (405) are symmetrically distributed in the base (406), and the upper turntable (402) and the lower disc (405) are provided with limit sliders (403) that can slide along the slide groove between the upper turntable (402) and the lower disc (405).

4. A dual power automatic transfer switch contact system according to claim 3, characterized in that: The number of grooves (4061) in the base (406) is six, a spring (404) that can be connected to a limit slider (403) is provided in the slide groove between the upper turntable (402) and the lower disc (405), and the spring (404) can push the limit slider (403) to move, the number of the limit sliders (403) is four, and the four limit sliders (403) are arranged in a circular manner in the slide groove between the upper turntable (402) and the lower disc (405) in sequence, and a cover plate (401) that can be used to limit the upper turntable (402) and the lower disc (405) is provided above the base (406).

5. A dual power automatic transfer switch contact system according to claim 4, characterized in that: The transmission structure (3) comprises a bracket (301), a main transmission shaft (302) capable of rotating is provided in the bracket (301), a common driven shaft (303) and a spare driven shaft (304) capable of rotating are provided on the main transmission shaft (302), a fan-shaped collision block A (3031) is provided on the common driven shaft (303), and a fan-shaped collision block B (3041) is provided on the spare driven shaft (304), and the main transmission shaft (302) can control the first contact chamber (1) and the second contact chamber (2) to perform closing and opening operations through the fan-shaped collision block A (3031) and the fan-shaped collision block B (3041).

6. A dual power automatic transfer switch contact system according to claim 5, characterized in that: The common driven shaft (303) and the spare driven shaft (304) are sequentially arranged on the main transmission shaft (302); the fan-shaped collision block A (3031) and the fan-shaped collision block B (3041) are arranged in a positive and negative symmetrical distribution; the fan-shaped collision block A (3031) is composed of two arc-shaped blocks with a gap between the two arc-shaped blocks; the fan-shaped collision block B (3041) has the same structure as the fan-shaped collision block A (3031).

7. A dual power automatic transfer switch contact system according to claim 6, characterized in that: The rotation of the upper rotating disk (402) and the lower circular disk (405) is driven by a main transmission shaft (302).

8. A dual power automatic transfer switch contact system according to claim 7, characterized in that: The first contact chamber (1) comprises a base (101), a plurality of contact mounting grooves (1011) are provided in the base (101), stationary contacts (104) which can be sequentially mounted in the contact mounting grooves (1011) are provided in the base (101), a moving contact (102) is connected to an inlet end and an outlet end of the stationary contact (104), and a moving contact support (106) which can limit the position of the moving contact (102) is provided in the base (101).

9. A dual power automatic transfer switch contact system according to claim 8, characterized in that: An energy storage spring (103) that can be connected to the stationary contact (104) is provided in the contact installation groove (1011), and a cover plate (105) that can be connected to the base (101) and is used to limit the stationary contact (104) and the moving contact (102) is provided on the outside of the base (101).

10. A dual power automatic transfer switch contact system according to claim 9, characterized in that: The stationary contacts (104) are installed in the contact installation slots (1011) and are distributed in the vertical direction. The stationary contacts (104) adopt a special-shaped row design. The copper bars are vertically fixed at both ends of the bottom of the base (101), and the protruding parts of the copper bars are transformed from vertical distribution to horizontal distribution. The base (101) is provided with four contact installation slots (1011) in a linear uniform array. The first contact chamber (1) and the second contact chamber (2) have the same structure and are symmetrically distributed on both sides of the transmission structure (3).

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