Isolating switch

Abstract

The utility model relates to an isolating switch, which relates to the technical field of isolating switches, and comprises a mounting frame, a first insulator, a second insulator, a static contact mechanism, a first conductive support, a knife switch, a transmission mechanism and a power mechanism, and the first insulator, the second insulator, the transmission mechanism and the power mechanism are all arranged on the mounting frame. The static contact mechanism is arranged on the first insulator, the first conductive support is arranged on the second insulator, the knife switch is rotationally connected to the first conductive support and electrically connected with the first conductive support, the power mechanism comprises a base and a stepping motor, the base is connected to the mounting frame through bolts, the stepping motor is fixedly arranged on the base, and the stepping motor is electrically connected with the base. The transmission mechanism is used for transmitting power provided by the stepping motor to control opening and closing of the knife switch. According to the utility model, the opening and closing of the knife switch can be automatically controlled through the cooperation of the power mechanism and the transmission mechanism, the situation of incomplete opening and closing possibly caused by manual opening and closing of the knife switch is avoided, and the potential safety hazard when the disconnecting switch is used is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of isolating switches, in particular to an isolating switch. BACKGROUND

[0002] An isolating switch is a switching device mainly used for isolating power sources, switching operations, and connecting and disconnecting small current circuits without arc extinction function. When the isolating switch is in the open position, there is an insulating distance meeting the specified requirements and a clear disconnecting mark between the contacts; when the isolating switch is in the closed position, it can carry the current under normal circuit conditions and the current under abnormal conditions (such as short circuit) within a specified time. Generally used as a high-voltage isolating switch, i.e., an isolating switch with a rated voltage of 1 kV or above.

[0003] At present, the Chinese utility model patent application with the publication date of June 25, 2024 and the publication number of CN221226055U provides an isolating switch, which includes an isolating switch body, the isolating switch body includes a chassis, a support insulator installed on the chassis, a switch blade for opening and closing, a moving contact installed at one end of the switch blade, and a static contact installed on the support insulator; a rotating mechanism, the rotating mechanism includes a rotating shaft, a handle, a fixed disc, a limiting sleeve, a rotating arm, and a connecting plate, the rotating shaft is installed in the recesses on both sides of the middle of the chassis, the handle is connected with the adjusting hole on the fixed disc through bolts, the fixed disc is arranged at one end of the rotating shaft, the limiting sleeve is sleeved on the rotating shaft and is in abutment with the recess, the rotating arm is linked with the rotating shaft through the connecting plate, and the rotating arm is hingedly connected with the switch blade through a hinge pin. By pushing the handle, the rotating shaft, the connecting rod, and the rotating arm are linked to drive the switch blade to open and close.

[0004] In the related art, the isolating switch needs to be manually operated when opening and closing the isolating switch, and the manual opening and closing of the isolating switch may not be complete, and the isolating switch is applied to a high-voltage circuit and is prone to generate high-voltage arc when being opened and closed, which has certain safety hazards. Utility model content

[0005] The present application provides an isolating switch, which can improve the technical problem that the manual opening and closing of the isolating switch in the related art may not be complete.

[0006] The embodiment of the present application provides an isolating switch, which comprises a mounting frame, a first insulator, a second insulator, a static contact mechanism, a first conductive support, a blade, a transmission mechanism and a power mechanism, the first insulator, the second insulator, the transmission mechanism and the power mechanism are arranged on the mounting frame, the static contact mechanism is arranged on the first insulator, the first conductive support is arranged on the second insulator, the blade is rotationally connected to the first conductive support and is electrically connected with the first conductive support, the power mechanism comprises a base and a stepping motor, the base is bolted to the mounting frame, the stepping motor is fixedly arranged on the base, and the transmission mechanism is used for transmitting power provided by the stepping motor to control the opening and closing of the blade.

[0007] The technical scheme has at least the following technical effects: when a staff needs to open and close the isolating switch, the stepping motor can be controlled remotely to rotate in a set direction and at a set angle, the stepping motor drives the blade to rotate through the transmission mechanism, the blade is connected with or separated from the static contact mechanism, the closing of the isolating switch is controlled, the stepping motor can accurately control the rotating direction and angle of the blade, and the incomplete opening and closing of the isolating switch caused by manual operation is avoided; because the staff controls the opening and closing of the isolating switch remotely, the safety hidden danger caused by manual operation is reduced.

[0008] The isolating switch provided by the embodiment of the present application automatically controls the opening and closing of the blade through the cooperation of the power mechanism and the transmission mechanism, the incomplete opening and closing of the blade caused by manual operation is avoided, and the safety hidden danger when the isolating switch is used is reduced.

[0009] In some embodiments, a movable contact is sleeved on one end of the blade away from the first conductive support, the movable contact is bolted to the blade, the static contact mechanism comprises a second conductive support and static contacts, the static contacts are provided in two, the static contacts are bolted to the second conductive support, and the static contacts are electrically connected with the second conductive support.

[0010] In some embodiments, conductive contact layers are electroplated on the outer surfaces of the static contacts and the movable contact.

[0011] In some embodiments, the transmission mechanism comprises a first bevel gear, a second bevel gear, a transmission shaft, a first transmission arm and a second transmission arm, the transmission shaft is rotationally connected to the mounting frame, the first bevel gear is key-connected to the output shaft of the stepping motor, the second bevel gear is key-connected to the transmission shaft, the first bevel gear and the second bevel gear are in meshing transmission, one end of the first transmission arm is sleeved on the transmission shaft and is fixedly connected with the transmission shaft, one end of the second transmission arm is rotationally connected to the end of the blade away from the movable contact, and the other end of the second transmission arm is rotationally connected to the end of the first transmission arm away from the transmission shaft.

[0012] In some embodiments, the first transmission arm and the second transmission arm are made of insulating material.

[0013] In some embodiments, the base is fixedly provided with a protective cover, the output shaft of the stepper motor passes through the protective cover and is rotationally connected with the protective cover, a plurality of air holes are formed in the protective cover, and a plurality of waterproof edges are fixedly arranged on the outer surface of the protective cover.

[0014] In some embodiments, the inner surface of the protective cover is provided with a controller, and the controller is electrically connected with the stepper motor. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0016] Figure 1 A general structure schematic diagram of the disconnector provided in the embodiments of the present application is shown in the figure.

[0017] Figure 2 A general structure schematic diagram of the disconnector provided in the embodiments of the present application is shown in the figure. Figure 1 An enlarged view of part A in the figure.

[0018] Figure 3 A general structure schematic diagram of the disconnector provided in the embodiments of the present application is shown in the figure. Figure 1 An enlarged view of part B in the figure.

[0019] Figure 4 A general structure schematic diagram of the disconnector provided in the embodiments of the present application is shown in the figure. Figure 1 An enlarged view of part C in the figure.

[0020] Figure 5 A partial structure schematic diagram of the power mechanism and the shell is shown in the figure.

[0021] In the figure, various reference signs represent:

[0022] 1, mounting frame; 2, first insulator; 3, second insulator; 4, static contact mechanism; 41, second conductive support; 42, static contact; 5, first conductive support; 6, blade; 61, moving contact; 71, first bevel gear; 72, second bevel gear; 73, transmission shaft; 74, first transmission arm; 75, second transmission arm; 8, power mechanism; 81, base; 82, stepper motor; 9, protective cover; 91, air hole; 92, waterproof edge; 93, controller. DETAILED DESCRIPTION

[0023] In order to make the technical problems, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application and not to limit the present application.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The description and the drawings are to be regarded as illustrative in nature and are not intended to limit the application.

[0025] In the related art, the isolation switch needs to be manually operated when being opened and closed, and the manual opening and closing of the isolation switch may not be complete. Moreover, the isolation switch is applied to a high-voltage circuit, and high-voltage arc is easily generated when the isolation switch is opened and closed, which has certain safety hazards.

[0026] Based on this, in order to improve the problem that the manual opening and closing of the isolation switch in the related art may not be complete, the embodiments of the present application provide the following solutions.

[0027] Please refer to Figures 1 to 5 The embodiments of the present application provide an isolation switch, which comprises a mounting frame 1, a first insulator 2, a second insulator 3, a static contact mechanism 4, a first conductive support 5, a blade 6, a transmission mechanism, and a power mechanism 8. The transmission mechanism is used to transmit the power provided by the power mechanism 8 to control the connection and separation of the blade 6 and the static contact mechanism 4.

[0028] Please refer to Figures 1 to 5The first insulator 2, the second insulator 3, the transmission mechanism and the power mechanism 8 are arranged on the mounting frame 1, the static contact mechanism 4 is arranged on the first insulator 2, the first conductive support 5 is arranged on the second insulator 3, the blade 6 is rotationally connected to and electrically connected with the first conductive support 5, the power mechanism 8 comprises a base 81 and a stepping motor 82, the base 81 is bolted to the mounting frame 1, and the stepping motor 82 is fixedly arranged on the base 81; the transmission mechanism is used for transmitting power provided by the stepping motor 82 to control the opening and closing of the blade 6; the blade 6 is sleeved with the moving contact 61 at an end away from the first conductive support 5, and the moving contact 61 is bolted to the blade 6; the static contact mechanism 4 comprises a second conductive support 41 and two static contacts 42, the static contacts 42 are bolted to the second conductive support 41 and electrically connected with the second conductive support 41, and the outer surfaces of the static contacts 42 and the moving contact 61 are plated with conductive contact layers; the transmission mechanism comprises a first bevel gear 71, a second bevel gear 72, a transmission shaft 73, a first transmission arm 74 and a second transmission arm 75, the transmission shaft 73 is rotationally connected to the mounting frame 1, the first bevel gear 71 is keyed to the output shaft of the stepping motor 82, the second bevel gear 72 is keyed to the transmission shaft 73, the first bevel gear 71 is in meshing transmission with the second bevel gear 72, one end of the first transmission arm 74 is sleeved on the transmission shaft 73 and fixedly connected with the transmission shaft 73, one end of the second transmission arm 75 is rotationally connected to an end of the blade 6 away from the moving contact 61, and the other end of the second transmission arm 75 is rotationally connected to an end of the first transmission arm 74 away from the transmission shaft 73.

[0029] From the above, the isolation switch provided by the embodiment of the application can be installed on a specific device by the mounting frame 1 when the staff installs the isolation switch, and the first insulator 2 and the second insulator 3 are used to isolate the electrical connection between the first conductive support 5 and the second conductive support 41 and the frame body. When the staff needs to close the switch, the step motor 82 can be controlled remotely, the output shaft of the step motor 82 drives the transmission shaft 73 to rotate through the first bevel gear 71 and the second bevel gear 72, the transmission shaft 73 continues to drive the first transmission arm 74 to rotate around the transmission shaft 73, the end of the first transmission arm 74 and the second transmission arm 75 rotatingly connected is lifted upward, thereby pushing the second transmission arm 75 to move upward, the end of the second transmission arm 75 and the moving contact 61 rotatingly connected pushes the end of the moving contact 61 and the second transmission arm 75 rotatingly connected to rotate upward around the connection point of the moving contact 61 and the first conductive support 5, thereby making the other end of the moving contact 61 and the static contact 42 move downward, after the moving contact 61 contacts the static contact 42, the moving contact 61 continues to move downward to compress the two static contacts 42 to deform to both sides until the moving contact 61 moves to the lowest point, the static contact 42 will be pressed against the moving contact 61 under the action of its own elastic force, the conductive contact layer has excellent conductivity, which can improve the connection effect of the moving contact 61 and the static contact 42, and similarly, the staff can control the separation of the moving contact 61 and the static contact 42 by controlling the step motor 82. In this process, the staff can accurately control the rotating direction and rotating angle of the moving contact 61 by controlling the step motor 82, thereby avoiding the incomplete opening and closing of the isolation switch that may occur when the isolation switch is manually opened and closed. Since the isolation switch is applied to a high-voltage line, high-voltage arcs are likely to occur between the moving contact 61 and the static contact 42 when the moving contact 61 is opened and closed, and the staff needs to be close to the line when manually opening and closing the isolation switch, thereby having certain safety hazards, and remote control of the opening and closing of the isolation switch can reduce the probability of safety accidents during operation. Since the moving contact 61 and the static contact 42 will rub against each other when the isolation switch is opened and closed, high-voltage arcs generated in this process will also cause the moving contact 61 and the static contact 42 to heat and be damaged, and after the isolation switch works for a long time, the conductive contact layer on the moving contact 61 and the static contact 42 may be severely worn and cause the moving contact 61 and the static contact 42 to be unable to be effectively connected, when the moving contact 61 needs to be replaced, the staff can open the moving contact 61 and make the line de-energized, then unscrew the bolt used to connect the moving contact 61 and the moving contact 61, then take off the moving contact 61 from the moving contact 61 and install a new moving contact 61, and then screw the bolt, and similarly, the static contact 42 can also be replaced, which can ensure that the isolation switch works effectively for a long time.When the isolating switch works in a more severe environment, more dust will accumulate on the first insulator 2 and the second insulator 3, and the dust mixed with rainwater can cause a communication circuit between the first conductive support 5 and the mounting frame 1. When the staff needs to clean the first insulator 2 and the second insulator 3, the base 81 and the stepping motor 82 can be removed from the mounting frame 1, and then a high-pressure water gun is used to flush the first insulator 2 and the second insulator 3. After cleaning, the base 81 is installed back on the mounting frame 1 and the first bevel gear 71 and the second bevel gear 72 are engaged, so that the water flow during cleaning can be prevented from washing the stepping motor 82 and damaging the stepping motor 82.

[0030] In some embodiments, referring to Figure 2 and Figure 3 , the first transmission arm 74 and the second transmission arm 75 are both made of insulating materials.

[0031] In this way, when the contact 6 is closed, the current between the contact 6 and the stepping motor 82 can be prevented from interfering with the normal operation of the stepping motor 82.

[0032] In some embodiments, referring to Figure 1 and Figure 5 , the base 81 is fixedly provided with a protective cover 9, the output shaft of the stepping motor 82 penetrates through the protective cover 9 and is rotatably connected with the protective cover 9, a plurality of air holes 91 are formed in the protective cover 9, and a plurality of waterproof edges 92 are fixedly arranged on the outer surface of the protective cover 9.

[0033] In this way, the protective cover 9 can block dust, rainwater and other foreign matters from contacting the stepping motor 82, and can protect the stepping motor 82. The stepping motor 82 generates heat during operation, the air holes 91 can accelerate the air circulation between the inside and outside of the protective cover 9, so that the heat generated by the stepping motor 82 can be promptly dissipated to the outside, and the high temperature inside the protective cover 9 can be prevented from damaging the stepping motor 82 and the connecting circuit; and the waterproof edges 92 can prevent rainwater from entering the inside of the protective cover 9 through the air holes 91.

[0034] In some embodiments, referring to Figure 5 , a controller 93 is arranged on the inner surface of the protective cover 9, and the controller 93 is electrically connected with the stepping motor 82.

[0035] In this way, when the staff needs to open or close the isolating switch, a wireless signal can be remotely sent to the controller 93, and the controller 93 can control the stepping motor 82 to operate after receiving the signal, so as to control the opening and closing of the isolating switch, and the wired signal line can be no longer used to control the stepping motor 82, which can reduce the probability of the occurrence of the situation that the isolating switch cannot work normally due to the damage of the line.

[0036] The above only describes preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A disconnector, characterized by: The utility model provides a kind of switch, including mounting frame (1), first insulator (2), second insulator (3), static contact mechanism (4), first electrically conductive support (5), blade (6), transmission mechanism and power mechanism (8), the first insulator (2), second insulator (3), transmission mechanism and power mechanism (8) are all arranged on mounting frame (1), static contact mechanism (4) is arranged on first insulator (2), the first electrically conductive support (5) is arranged on second insulator (3), the blade (6) is rotatably connected on the first electrically conductive support (5) and is electrically connected with the first electrically conductive support (5), the power mechanism (8) includes base (81) and step motor (82), the base (81) is bolted on mounting frame (1), the step motor (82) is fixedly arranged on the base (81), and the transmission mechanism is used to transmit the power provided by step motor (82) to control the opening and closing of blade (6).

2. The disconnector according to claim 1, characterized in that The end of the blade (6) away from the first electrically conductive support (5) is sleeved with a moving contact (61), the moving contact (61) is bolted with the blade (6), the static contact mechanism (4) includes a second electrically conductive support (41) and a static contact (42), the static contact (42) is provided with two, the static contact (42) is bolted with the second electrically conductive support (41), and the static contact (42) is electrically connected with the second electrically conductive support (41).

3. A disconnector according to claim 2, characterised in that: The outer surfaces of the static contact (42) and the moving contact (61) are plated with an electrically conductive contact layer.

4. An isolating switch according to claim 3, characterised in that: The transmission mechanism includes a first bevel gear (71), a second bevel gear (72), a transmission shaft (73), a first transmission arm (74), and a second transmission arm (75), the transmission shaft (73) is rotatably connected to the mounting frame (1), the first bevel gear (71) is keyed to the output shaft of the step motor (82), the second bevel gear (72) is keyed to the transmission shaft (73), the first bevel gear (71) is in meshing transmission with the second bevel gear (72), one end of the first transmission arm (74) is sleeved on the transmission shaft (73) and is fixedly connected with the transmission shaft (73), one end of the second transmission arm (75) is rotatably connected to the end of the blade (6) away from the moving contact (61), and the other end of the second transmission arm (75) is rotatably connected to the end of the first transmission arm (74) away from the transmission shaft (73).

5. An isolating switch according to claim 4, characterised in that: The first transmission arm (74) and the second transmission arm (75) are both made of insulating material.

6. A disconnector according to any of claims 1-5, characterized in that: A protective cover (9) is fixedly arranged on the base (81), the output shaft of the step motor (82) penetrates through the protective cover (9) and is rotatably connected with the protective cover (9), a plurality of air holes (91) are formed in the protective cover (9), and a plurality of waterproof edges (92) are further fixedly arranged on the outer surface of the protective cover (9).

7. An isolating switch according to claim 6, characterised in that: A controller (93) is arranged on the inner surface of the protective cover (9), and the controller (93) is electrically connected with the step motor (82).

Images