Direct-current electric and manual isolating switch

Abstract

The utility model discloses a direct-current electric manual isolating switch, which comprises a mounting seat, a contact assembly, a mounting plate and a wiring terminal, the contact assembly is mounted on the mounting seat, the mounting plate is mounted on the side wall of the mounting seat, and the wiring terminal is mounted on the mounting plate. The highest position of the installation plate installed on the installation seat is lower than the highest position of the contact assembly, and the wiring terminal is installed on the side wall of the installation plate. The wiring terminals are mounted on the mounting seat through the mounting plate, the height of the mounting plate is limited, a traditional body part and a control part are combined together, the occupied space of the whole machine is reduced, the structure is reasonable and compact, follow-up mounting is facilitated, circuits are shortened, and follow-up overhaul wiring is facilitated.

Description

Technical Field

[0001] This utility model relates to the technical field of disconnect switches, and in particular to a DC electric manual disconnect switch. Background Technology

[0002] DC manual and electric disconnect switches are suitable for DC circuits of 3600V and below, with a rated current of 6000A and below. They are used to disconnect and switch circuits when the DC circuit is unloaded. They are mainly used in low and medium voltage high current DC power transmission and distribution systems. As a key electrical component for connecting or disconnecting the power supply and the power network, DC power transmission and distribution systems have long been widely used in domestic and foreign subways, light rail, trolleybuses, metallurgy, atomic energy research and testing institutes and other industries. They can also be directly used with various large DC switch cabinets and traction box-type substations.

[0003] DC manual / electric disconnect switches are suitable for indoor / cabinet-style outdoor installation. Their moving contact assembly consists of multiple blades with high resilience. Both the blades and the stationary contact are made of electrical copper plated with silver. At the electrical contact point between the blades and the stationary contact, hard silver contact rivets are riveted to the blades. This achieves multi-point hard silver contact when the blades are electrically connected to the stationary contact, ensuring the reliability of the electrical contact and good conductivity, thus guaranteeing their long service life.

[0004] The DC manual-electric disconnect switch is driven by an electric motor and can be operated remotely or manually in an emergency by inserting a manual crank into the corresponding mechanism.

[0005] However, in the current technology, DC manual electric disconnect switches include a main body and a control part. The control part is installed in the box and is electrically connected to the main body through a line. Since the two parts of the split type require two spaces, or the two parts of the split type are installed in one area, they occupy a lot of space and have long lines, which are inconvenient for maintenance and wiring. Utility Model Content

[0006] To address the aforementioned problems with existing disconnect switches, this invention aims to provide a DC electric manual disconnect switch. This switch integrates the traditional main body and control components by mounting terminals on a mounting plate on a mounting base, with a limited mounting plate height. This reduces the overall space occupied by the switch, resulting in a reasonable and compact structure that facilitates subsequent installation, shortens wiring, and streamlines maintenance wiring.

[0007] The specific technical solution is as follows:

[0008] A DC electric manual disconnect switch includes: a mounting base and a contact assembly, the contact assembly being mounted on the mounting base; and a mounting plate and a terminal block, the mounting plate being mounted on a side wall of the mounting base, the highest point of the mounting plate being lower than the highest point of the contact assembly; and the terminal block being mounted on the side wall of the mounting plate.

[0009] In the aforementioned DC electric manual disconnect switch, two contactors are mounted on the side wall of the mounting base, and the two contactors are electrically connected to the wiring terminals.

[0010] The aforementioned DC electric manual disconnect switch, wherein the contact assembly includes:

[0011] At least two insulators are mounted on the mounting base;

[0012] At least two upper buses are mounted on the insulator;

[0013] At least one stationary contact is mounted on one of the upper busbars;

[0014] At least one moving contact is rotatably mounted on another of the upper busbars, and the moving contact cooperates with the stationary contact;

[0015] In the case where the moving contact and the stationary contact are not in contact, the highest point of the mounting plate is lower than the highest point of the moving contact.

[0016] In the aforementioned DC electric manual disconnect switch, the moving contact is operably positioned in a first position and a second position;

[0017] When the moving contact is in the first position, the moving contact cooperates with the stationary contact;

[0018] When the moving contact is in the second position, the moving contact is disengaged from the stationary contact;

[0019] The highest point of the mounting plate is lower than the highest point of the moving contact when it is in the second position.

[0020] The aforementioned DC electric manual disconnect switch further includes: a drive assembly, which is mounted on the side wall of the mounting base and is tractively connected to the moving contact so that the moving contact is in the first position or the second position.

[0021] In the aforementioned DC electric manual disconnect switch, the drive assembly includes a motor, a gearbox, and a linkage assembly connected in sequence, and the linkage assembly is connected in a driving connection with the moving contact.

[0022] In the aforementioned DC electric manual disconnect switch, the gearbox is mounted on the side wall of the mounting base, the motor is located on the upper side of the gearbox, the contactor is located on the side of the gearbox, the mounting plate is located on the side of the gearbox and the motor, and the wiring terminal is located on the side of the motor.

[0023] The aforementioned DC electric manual disconnect switch, wherein the linkage assembly includes:

[0024] The first connecting rod, one end of which is connected to the transmission inside the gearbox;

[0025] At least two rocker arms, one end of each rocker arm being connected to the first connecting rod;

[0026] The second link is connected to the other end of each of the rocker arms and is parallel to the first link;

[0027] The third link has one end connected to the second link and the other end connected to the moving contact.

[0028] In the aforementioned DC electric manual disconnect switch, a cam is mounted on the other end of the first connecting rod, and a micro switch is mounted on the side wall of the mounting base, with the protruding part of the cam engaging with the micro switch.

[0029] In the aforementioned DC electric manual disconnect switch, a limiting component is installed on the mounting base, and the limiting component cooperates with the second connecting rod for limiting.

[0030] The positive effects of the above technical solution compared with the existing technology are:

[0031] This utility model integrates the traditional main body and control parts by mounting the wiring terminals on the mounting base and limiting the height of the mounting plate, thereby reducing the space occupied by the whole machine. The structure is reasonable and compact, which facilitates subsequent installation, shortens the wiring, and facilitates subsequent maintenance wiring. Attached Figure Description

[0032] Figure 1 This is a top view of a DC electric manual disconnect switch according to the present invention;

[0033] Figure 2 This utility model relates to a DC electric manual disconnect switch. Figure 1 The right view in the middle;

[0034] Figure 3 This utility model relates to a DC electric manual disconnect switch. Figure 1 The left view in the middle;

[0035] In the attached diagram: 1. Mounting base; 2. Contact assembly; 3. Mounting plate; 4. Terminal block; 5. Drive assembly; 6. Contactor; 21. Contact group; 22. Insulator; 23. Upper busbar; 24. Stationary contact; 25. Moving contact; 51. Motor; 52. Gearbox; 53. Linkage assembly; 54. Limiting element; 71. First link; 72. Second link; 73. Third link; 74. Rocker arm; 81. Cam; 82. Micro switch. Detailed Implementation

[0036] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0037] like Figures 1 to 3 As shown, a preferred embodiment of a DC electric manual disconnect switch is illustrated, comprising: a mounting base 1 and a contact assembly 2, the contact assembly 2 being mounted on the mounting base 1.

[0038] The DC electric manual disconnect switch also includes: a mounting plate 3 and a terminal block 4. The mounting plate 3 is mounted on the side wall of the mounting base 1. The highest point of the mounting plate 3 mounted on the mounting base 1 is lower than the highest point of the contact assembly 2. The terminal block 4 is mounted on the side wall of the mounting plate 3.

[0039] Preferably, the lateral width of the mounting plate 3 is smaller than the width of the mounting base 1.

[0040] Preferably, the mounting plate 3 is fixedly connected to the mounting base 1 by multiple bolts.

[0041] Preferably, the mounting plate 3 is set vertically.

[0042] Preferably, mounting plate 3 is a straight plate.

[0043] Preferably, the outer side of the terminal block 4 does not exceed the outer side of the mounting plate 3.

[0044] Furthermore, as a preferred embodiment, two contactors 6 are installed on the side wall of the mounting base 1, and the two contactors 6 are electrically connected to the wiring terminal 4 respectively.

[0045] The above are merely preferred embodiments of the present invention and are not intended to limit the implementation methods and protection scope of the present invention.

[0046] Based on the above, this utility model also has the following embodiments:

[0047] For further embodiments of this utility model, please refer to... Figure 1As shown, the contact assembly 2 includes at least one contact group 21. One contact group 21 includes at least two insulators 22, at least two upper busbars 23, at least one stationary contact 24, and at least one moving contact 25. The insulators 22 are mounted on the mounting base 1, the upper busbars 23 are mounted on the insulators 22, the stationary contact 24 is mounted on one upper busbar 23, and the moving contact 25 is rotatably mounted on the other upper busbar 23. The moving contact 25 cooperates with the stationary contact 24.

[0048] When the moving contact 25 and the stationary contact 24 are not in contact, the highest point of the mounting plate 3 is lower than the highest point of the moving contact.

[0049] The contact assembly 2 includes multiple contact groups 21, which are arranged side by side.

[0050] In a further embodiment of the present invention, the moving contact 25 is operably positioned in a first position and a second position;

[0051] When the moving contact 25 is in the first position, the moving contact 25 engages with the stationary contact 24;

[0052] When the moving contact 25 is in the second position, the moving contact 25 is disengaged from the stationary contact 24;

[0053] The highest point of the mounting plate 3 is lower than the highest point of the moving contact 25 when it is in the second position.

[0054] In a further embodiment of the present invention, the DC electric manual disconnect switch further includes a drive assembly 5, which is mounted on the side wall of the mounting base 1 and is connected to the moving contact 25 in a driving connection so that the moving contact 25 is in a first position or a second position.

[0055] In a further embodiment of the present invention, the drive assembly 5 includes a motor 51, a reduction gearbox 52 and a connecting rod assembly 53 connected in sequence, and the connecting rod assembly 53 is connected in transmission to the moving contact 25.

[0056] In a further embodiment of the present invention, the gearbox 52 is mounted on the side wall of the mounting base 1, the motor 51 is located on the upper side of the gearbox 52, the two contactors 6 are located on both sides of the gearbox 52, the mounting plate 3 is located on the side of the gearbox 52 and the motor 51, and the wiring terminal 4 is located on the side of the motor 51.

[0057] Preferably, the mounting plate 3 is located on one of the contactors 6, and the terminal block 4 is located above one of the contactors 6.

[0058] Furthermore, since the sum of the thickness of the terminal block 4 and the thickness of the mounting plate 3 is less than the thickness of the motor 51, the mounting plate 3 and the terminal block 4 will not protrude from the outside of the whole machine in the thickness direction.

[0059] Preferably, when the contact assembly 2 includes multiple contact groups 21, a connecting rod assembly 53 is connected to multiple moving contacts 25 respectively.

[0060] In a further embodiment of the present invention, the linkage assembly 53 includes: a first linkage 71, at least two rocker arms 74, a second linkage 72, and at least one third linkage 73. One end of the first linkage 71 is connected to the gearbox 52 for transmission. One end of each rocker arm 74 is connected to the first linkage 71. The second linkage 72 is connected to the other end of each rocker arm 74. The second linkage 72 is parallel to the first linkage 71. One end of the third linkage 73 is connected to the second linkage 72. The other end of the third linkage 73 is connected to the moving contact 25.

[0061] Preferably, when the contact assembly 2 includes multiple contact groups 21, the multiple third links 73 are respectively connected to multiple moving contacts 25 in a transmission manner.

[0062] In a further embodiment of the present invention, a cam 81 is installed on the other end of the first connecting rod 71, and a micro switch 82 is installed on the side wall of the mounting base 1. The protruding part of the cam 81 cooperates with the micro switch 82.

[0063] Preferably, the micro switch 82 is used to detect whether the circuit is closed. The cam 81 rotates and abuts against the micro switch 82. In use, when the output shaft of the gearbox 52 rotates and drives the first connecting rod 71 to rotate, the output shaft of the gearbox 52 will synchronously drive the micro switch 82 to rotate. When the output shaft of the gearbox 52 rotates to the point where the moving contact 25 and the stationary contact 24 are fully connected, the cam 81 will abut against the micro switch 82. The micro switch 82 sends an electrical signal to the external PLC device. The external PLC device processes the electrical signal and outputs an electrical signal to the external display device to show whether the circuit is connected. The operator can then determine the circuit connection status. At the same time, when the isolating switch is in the closed or open position, the micro switch 82 disconnects the motor working circuit.

[0064] In a further embodiment of this utility model, a limiting member 54 is installed on the mounting base 1. The limiting member 54 cooperates with the second connecting rod 72 to limit the range of motion of the moving contact 25 by limiting the range of motion of the second connecting rod 72.

[0065] This utility model integrates the traditional main body and control part by mounting the terminal block 4 on the mounting base 1 through the mounting plate 3 and limiting the height of the mounting plate 3, thereby reducing the space occupied by the whole machine. The structure is reasonable and compact, which facilitates subsequent installation, shortens the wiring, and facilitates subsequent maintenance wiring.

[0066] Since the outer side of the mounting plate 3 does not exceed the width and height of the entire machine, the overall housing space of the machine is reduced, thereby reducing the space occupied. By installing the wiring terminals through the mounting plate, the distance between the wiring terminals 4 and the contactor 6, the motor 51 and the micro switch 82 is shortened, and the wiring is shortened, which facilitates subsequent maintenance wiring.

[0067] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model. Those skilled in the art should realize that all solutions obtained by equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A DC electric manual disconnect switch, comprising: A mounting base and a contact assembly, the contact assembly being mounted on the mounting base, characterized in that it further includes: a mounting plate and a terminal block, the mounting plate being mounted on the side wall of the mounting base, the highest point of the mounting plate being lower than the highest point of the contact assembly, and the terminal block being mounted on the side wall of the mounting plate.

2. The DC electric manual disconnect switch according to claim 1, characterized in that, Two contactors are mounted on the side wall of the mounting base, and the two contactors are electrically connected to the wiring terminal.

3. The DC electric manual disconnect switch according to claim 2, characterized in that, The contact assembly includes: At least two insulators are mounted on the mounting base; At least two upper buses are mounted on the insulator; At least one stationary contact is mounted on one of the upper busbars; At least one moving contact is rotatably mounted on another of the upper busbars, and the moving contact cooperates with the stationary contact; In the case where the moving contact and the stationary contact are not in contact, the highest point of the mounting plate is lower than the highest point of the moving contact.

4. The DC electric manual disconnect switch according to claim 3, characterized in that, The moving contact is operable in both a first position and a second position; When the moving contact is in the first position, the moving contact cooperates with the stationary contact; When the moving contact is in the second position, the moving contact is disengaged from the stationary contact; The highest point of the mounting plate is lower than the highest point of the moving contact when it is in the second position.

5. The DC electric manual disconnect switch according to claim 4, characterized in that, Also includes: A drive assembly is mounted on the side wall of the mounting base and is kinetically connected to the moving contact to position the moving contact in either the first or the second position.

6. The DC electric manual disconnect switch according to claim 5, characterized in that, The drive assembly includes a motor, a gearbox, and a linkage assembly connected in sequence, and the linkage assembly is connected to the moving contact.

7. The DC electric manual disconnect switch according to claim 6, characterized in that, The gearbox is mounted on the side wall of the mounting base, the motor is located on the upper side of the gearbox, the contactor is located on the side of the gearbox, the mounting plate is located on the side of the gearbox and the motor, and the wiring terminal is located on the side of the motor.

8. The DC electric manual disconnect switch according to claim 6, characterized in that, The linkage assembly includes: The first connecting rod, one end of which is connected to the transmission inside the gearbox; At least two rocker arms, one end of each rocker arm being connected to the first connecting rod; The second link is connected to the other end of each of the rocker arms and is parallel to the first link; The third link has one end connected to the second link and the other end connected to the moving contact.

9. The DC electric manual disconnect switch according to claim 8, characterized in that, A cam is mounted on the other end of the first connecting rod, and a micro switch is mounted on the side wall of the mounting base. The protruding part of the cam cooperates with the micro switch.

10. The DC electric manual disconnect switch according to claim 8, characterized in that, A limiting component is installed on the mounting base, and the limiting component cooperates with the second connecting rod for limiting.

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