A cable support for conductive connection

Abstract

The present invention relates to the technical field of circuit breakers, and specifically to a cable support for conductive connection, comprising a support shell, a static contact, a moving contact, an insulating pull rod and an elastic connection component, wherein an upper outlet terminal is provided at the upper end of the support shell, a lower outlet terminal is provided at one side of the lower part of the support shell, and a vacuum arc extinguishing chamber is fixedly provided inside the support shell. The present invention is provided with an elastic connection component, when opening the switch, the elastic connection component gradually accumulates force, and after the elastic connection component accumulates force to a certain extent, the moving contact accelerates away from the static contact, so that the opening speed can be faster and the arc extinguishing ability can be stronger. When closing the switch, when the distance between the moving contact and the static contact reaches a preset distance, the elastic connection component quickly reduces the moving speed of the moving contact, so that the static contact and the moving contact can be closed stably and reliably, preventing the moving contact and the static contact from colliding and wearing, and preventing the moving contact and the static contact from vibrating at high speed when the moving contact and the static contact collide rigidly.

Description

Technical Field

[0001] The invention relates to the technical field of circuit breakers, in particular to a cable support for conductive connection. Background Art

[0002] A sealed pole is a component in high-voltage electrical appliances, specifically a structure used to fix insulated high-voltage conductors (such as the moving and static contacts of an arc extinguishing chamber) inside a circuit breaker, disconnector or other high-voltage equipment. A general sealed pole includes an upper outlet terminal, a vacuum arc extinguishing chamber, a lower outlet terminal and an epoxy resin insulator. Static contacts and moving contacts are arranged in the vacuum arc extinguishing chamber in the up and down directions, wherein the moving contact is connected to the insulating pull rod through the moving contact arm, and the other end of the insulating pull rod is connected to the operating mechanism. Under the action of the operating mechanism, the insulating pull rod drives the moving contact arm to move up and down to realize the contact and separation of the moving and static contacts, thereby realizing the opening and closing of the circuit breaker.

[0003] In order to achieve stable and reliable engagement of the moving and static contacts, maintain a certain closing pressure after the moving and static contacts are engaged, and improve the closing performance, an overtravel spring is generally connected to the insulating pull rod. However, the opening and closing time required by the current fast switch is a few milliseconds, so the opening and closing speed is relatively large, generally around 10m / s. When the existing sealed vacuum circuit breaker is in use, since an overtravel spring is required, a corresponding insulating pull rod must be provided, and the weight of the insulating pull rod is relatively heavy, at least several kilograms, which results in more moving parts and heavier weight, which is not conducive to improving the opening and closing speed.

[0004] In the existing sealed pole, since one end of the arc extinguishing chamber is a fixed end and the other end is a movable end, when the movable end conductive rod is subjected to an upward impact force, it hits the static end conductive rod, thereby causing a large impact on the arc extinguishing chamber. This impact is acceptable in AC circuit breakers when the opening and closing speed is relatively low. However, when directly applied to DC circuit breakers, due to the requirement for stronger arc extinguishing ability, the opening and closing speed of the moving and static end contacts has higher requirements, the operating work of the operating mechanism will be greater, and there is a possibility that the moving and static end contacts will be damaged. Summary of the invention

[0005] Based on this, it is necessary to provide a cable support for conductive connection to address the problems existing in the current sealed poles, so as to solve the problem that when the moving end contacts and the static end contacts in the existing sealed poles are closed, the closing speed is fast, which easily causes the moving end contacts and the static end contacts to collide and wear with each other.

[0006] The above purpose is achieved through the following technical solutions:

[0007] A cable support for conductive connection comprising:

[0008] A support shell, wherein an upper outlet terminal is provided at the upper end of the support shell, and a lower outlet terminal is provided at one side of the lower part of the support shell;

[0009] A vacuum interrupter is fixedly arranged inside the support shell;

[0010] A stationary contact, wherein the stationary contact is fixedly arranged inside the support housing, and one end of the stationary contact is located inside the vacuum interrupter;

[0011] A moving contact, the moving contact is slidably connected to the inside of the support housing, and one end of the moving contact is located inside the vacuum interrupter;

[0012] An insulating pull rod, the insulating pull rod can move along the axis of the moving contact;

[0013] An elastic connection component is arranged in the support housing and between the moving contact and the insulating pull rod;

[0014] The elastic connection assembly is configured to reduce the moving speed of the moving contact when the moving contact is at a preset distance from the static contact when the static contact and the moving contact are closed;

[0015] The elastic connection assembly is also configured so that when the stationary contact and the moving contact are opened, the moving contact is accelerated away from the stationary contact.

[0016] In one embodiment, the elastic connection assembly includes an outer transmission ring, an inner transmission ring and an intermediate transmission ring, the upper end of the insulating pull rod is fixedly connected to the intermediate transmission ring through a first spring, the upper part of the intermediate transmission ring is coaxially rotatably connected to the outer transmission ring, and the outer transmission ring can move synchronously with the intermediate transmission ring along the axis, the inner transmission ring is coaxially arranged on the inner periphery of the outer transmission ring, and the inner transmission ring and the moving contact can move synchronously along the axis of the inner transmission ring;

[0017] A disc spring is arranged between the inner transmission ring and the outer transmission ring. The disc spring can be compressed along the axial direction of the outer transmission ring. A second spring is also arranged between the inner transmission ring and the outer transmission ring. When the outer transmission ring rotates, the second spring can drive the inner transmission ring to rotate synchronously.

[0018] In one embodiment, a first guide groove is formed on the inner peripheral wall of the support housing, a first guide column is formed on the outer peripheral wall of the outer transmission ring, and the first guide column is slidably connected in the first guide groove;

[0019] The first guide groove includes a spiral lifting groove and a first vertical moving groove, the spiral lifting groove and the vertical moving groove are smoothly connected, and the vertical moving groove is located in the middle of the spiral lifting groove;

[0020] A fixing ring is also fixedly connected inside the support housing. The fixing ring is coaxial with the inner transmission ring and is located between the outer peripheral wall of the inner transmission ring and the outside of the vacuum arc extinguishing chamber. A second guide groove is opened on the outer peripheral wall of the fixing ring. A second guide column is provided on the inner peripheral wall of the inner transmission ring. The second guide column is slidably connected in the second guide groove.

[0021] The second guide groove includes a horizontal rotation groove and a second vertical movement groove, the horizontal rotation groove corresponds to the spiral lifting groove, and the first vertical movement groove corresponds to the second vertical movement groove.

[0022] In one of the embodiments, a one-way damping component is provided between the outer transmission ring and the inner peripheral wall of the support shell, and when the outer transmission ring moves upward, the one-way damping component damps the movement of the outer transmission ring.

[0023] In one embodiment, the one-way damping assembly includes an outer damping block and an inner damping block, the inner damping block is arranged on the outer peripheral surface of the outer transmission ring, the outer damping block is rotatably arranged on the inner peripheral wall of the support shell, and the inner peripheral wall of the support shell is provided with an inner sinking groove;

[0024] When the outer transmission ring moves downward from top to bottom, the inner damping block squeezes the outer damping block, so that the outer damping block rotates in the direction away from the inner damping block into the inner sinking groove;

[0025] When the outer transmission ring moves upward from bottom to top, the inner damping block squeezes the outer damping block so that the outer damping block rotates in a direction close to the inner damping block.

[0026] In one embodiment, a through hole is opened at the center of the lower end of the vacuum interrupter, and an insulating telescopic tube is arranged in the vacuum interrupter, and the insulating telescopic tube is coaxial with the through hole and fixedly connected;

[0027] A connecting ring is arranged on the outer periphery of the moving contact, and the connecting ring is fixedly connected to the upper end of the insulating telescopic tube.

[0028] In one embodiment, a static contact arm is provided in the upper outlet terminal, and the static contact arm is connected to the static contact;

[0029] A moving contact arm is arranged in the lower outlet terminal, a flexible conductive belt is arranged at one end of the moving contact arm close to the moving contact, and the center of the flexible conductive belt is connected to the moving contact.

[0030] In one of the embodiments, a synchronization ring is provided on the circumference of the moving contact, a movable limiting ring groove is provided on the circumference of the synchronization ring, and the lower end of the inner transmission ring is rotatably connected in the movable limiting ring groove.

[0031] In one of the embodiments, a first through slot is formed in the circumference of the intermediate transmission ring, and the movable contact arm passes through the first through slot.

[0032] In one of the embodiments, one end of the insulating pull rod away from the first spring is fixedly connected to an operating mechanism.

[0033] The beneficial effects of the present invention are:

[0034] The present invention is provided with an elastic connection component. When opening the switch, the elastic connection component gradually accumulates force. After the elastic connection component accumulates force to a certain extent, the moving contact accelerates away from the static contact, so that the opening speed can be faster and the arc extinguishing ability can be stronger. When closing the switch, when the distance between the moving contact and the static contact reaches a preset distance, the elastic connection component quickly reduces the moving speed of the moving contact, so that the static contact and the moving contact can be closed stably and reliably, preventing the moving contact and the static contact from colliding and wearing, and preventing the moving contact and the static contact from vibrating at high speed due to rigid collision, thereby preventing the problem of high-frequency opening and closing of the moving contact and the static contact. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is an overall schematic diagram of a cable support for conductive connection of the present invention;

[0036] Figure 2 A cross-sectional view of a cable support for conductive connection according to the present invention;

[0037] Figure 3 A half-section axonometric view of a support housing in a cable support for conductive connection according to the present invention;

[0038] Figure 4 It is a structural schematic diagram of an outer transmission ring in a cable support for conductive connection according to the present invention;

[0039] Figure 5 It is a schematic structural diagram of an inner transmission ring in a cable support for conductive connection according to the present invention;

[0040] Figure 6 It is a structural schematic diagram of a static contact arm in a cable support for conductive connection of the present invention;

[0041] Figure 7 It is a structural schematic diagram of a movable contact arm in a cable support for conductive connection according to the present invention;

[0042] Figure 8 It is a schematic diagram of the open state of a cable support for conductive connection according to the present invention;

[0043] Fig. 9 The present invention is a schematic diagram of a closed state of a cable support for conductive connection.

[0044] in:

[0045] 100, support shell; 110, upper outlet terminal; 120, lower outlet terminal; 130, vacuum interrupter; 131, through hole; 140, first guide groove; 150, second guide groove; 160, fixed ring; 200, static contact; 210, static contact arm; 300, moving contact; 310, connecting ring; 320, moving contact arm; 330, flexible conductive belt; 340, synchronous ring; 341, movable limiting ring groove; 400, Insulating pull rod; 500, elastic connection assembly; 510, outer transmission ring; 511, first guide column; 520, inner transmission ring; 521, second guide column; 530, intermediate transmission ring; 531, first through groove; 540, first spring; 550, disc spring; 560, second spring; 600, one-way damping assembly; 610, outer damping block; 620, inner damping block; 630, inner sink groove; 700, insulating telescopic tube. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0047] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0048] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0049] like Figure 1-Figure 9As shown, a cable support for conductive connection includes a support shell 100, a static contact 200, a moving contact 300, an insulating pull rod 400 and an elastic connection assembly 500, wherein an upper outlet terminal 110 is provided at the upper end of the support shell 100, a lower outlet terminal 120 is provided at one side of the lower part of the support shell 100, a vacuum arc extinguishing chamber 130 is fixedly provided inside the support shell 100, the static contact 200 is fixedly provided inside the support shell 100, and one end of the static contact 200 is located inside the vacuum arc extinguishing chamber 130, the moving contact 300 is slidably connected to the inside of the support shell 100, and ... One end of the contact 300 is located inside the vacuum arc chamber 130, the insulating rod 400 can move along the axis of the moving contact 300, the elastic connection component 500 is arranged in the support housing 100 and is located between the moving contact 300 and the insulating rod 400, the elastic connection component 500 is configured so that when the static contact 200 and the moving contact 300 are closed, the moving contact 300 reduces the moving speed of the moving contact 300 when it is at a preset distance from the static contact 200, and the elastic connection component 500 is also configured so that when the static contact 200 and the moving contact 300 are opened, the moving contact 300 accelerates away from the static contact 200.

[0050] When opening the switch, the insulating rod 400 moves downward along the axis of the moving contact 300. The insulating rod 400 drives the moving contact 300 to move downward through the elastic connection component 500. The elastic connection component 500 gradually accumulates force. After the elastic connection component 500 accumulates force to a certain extent, the moving contact 300 accelerates away from the static contact 200. This can make the opening speed faster and the arc extinguishing ability stronger.

[0051] When closing the circuit breaker, the insulating pull rod 400 moves upward along the axis of the moving contact 300, and the insulating pull rod 400 drives the moving contact 300 to move upward through the elastic connection component 500. When the distance between the moving contact 300 and the static contact 200 reaches a preset distance, the elastic connection component 500 quickly reduces the movement speed of the moving contact 300, so that the static contact 200 and the moving contact 300 can be stably and reliably closed, preventing the moving contact 300 and the static contact 200 from colliding and wearing, and preventing the moving contact 300 and the static contact 200 from vibrating at high speed due to rigid collision between the moving contact 300 and the static contact 200, thereby preventing the problem of high-frequency opening and closing of the moving contact 300 and the static contact 200.

[0052] In a further embodiment, Figure 8As shown, the elastic connection assembly 500 includes an outer transmission ring 510, an inner transmission ring 520 and an intermediate transmission ring 530. The upper end of the insulating pull rod 400 is fixedly connected to the intermediate transmission ring 530 through a first spring 540. The upper part of the intermediate transmission ring 530 is coaxially rotatably connected to the outer transmission ring 510, and the outer transmission ring 510 can move synchronously with the intermediate transmission ring 530 along the axis. The inner transmission ring 520 is coaxially arranged on the inner periphery of the outer transmission ring 510, and the inner transmission ring 520 and the moving contact 300 can move along the axis of the inner transmission ring 520. The inner transmission ring 520 and the outer transmission ring 510 move synchronously, and a disc spring 550 is provided between the inner transmission ring 520 and the outer transmission ring 510. The disc spring 550 can be compressed along the axial direction of the outer transmission ring 510. Specifically, the lower end of the disc spring 550 is fixedly connected to the inner transmission ring 520, and the upper end of the disc spring 550 is rotatably connected to the outer transmission ring 510, and the outer transmission ring 510 can pull the inner transmission ring 520 through the disc spring 550. A second spring 560 is also provided between the inner transmission ring 520 and the outer transmission ring 510. When the outer transmission ring 510 rotates, the second spring 560 is used to pull the inner transmission ring 520. The spring 560 can drive the inner transmission ring 520 to rotate synchronously. A first guide groove 140 is provided on the inner peripheral wall of the support housing 100. A first guide column 511 is provided on the outer peripheral wall of the outer transmission ring 510. The first guide column 511 is slidably connected in the first guide groove 140. The first guide groove 140 includes a spiral lifting groove and a first vertical moving groove. The spiral lifting groove and the vertical moving groove are smoothly connected. The vertical moving groove is located in the middle of the spiral lifting groove. A fixing ring 160 is also fixedly connected to the interior of the support housing 100. The fixed ring 160 is coaxial with the inner transmission ring 520 and is located between the outer peripheral wall of the inner transmission ring 520 and the outside of the vacuum interrupter 130. A second guide groove 150 is provided on the outer peripheral wall of the fixed ring 160. A second guide column 521 is provided on the inner peripheral wall of the inner transmission ring 520. The second guide column (521) is slidably connected in the second guide groove 150. The second guide groove 150 includes a horizontal rotation groove and a second vertical movement groove. The horizontal rotation groove corresponds to the spiral lifting groove, and the first vertical movement groove and the second vertical movement groove are located in corresponding positions.

[0053] When the gate is opened, the insulating rod 400 moves downward, and the insulating rod 400 pulls the first spring 540 downward. The first spring 540 is gradually stretched, and the first spring 540 pulls the intermediate transmission ring 530 downward. The intermediate transmission ring 530 pulls the outer transmission ring 510 downward, and the outer transmission ring 510 is subjected to a downward pulling force. At this time, under the guidance of the first guide column 511 and the first guide groove 140, the first guide column 511 rotates spirally along the spiral lifting groove and moves downward, and the outer transmission ring 510 rotates and moves downward synchronously with the first guide column 511. At this time, the disc spring 550 is gradually compressed, and the upper surface height of the outer transmission ring 510 begins to be lower than the upper surface height of the inner transmission ring 520. At the same time, under the action of the second spring 560, the outer transmission ring 510 rotates synchronously with the inner transmission ring 520. When the first guide column 511 is lowered, the outer transmission ring 510 rotates synchronously with the inner transmission ring 520. When 511 rotates to the position of the first vertical moving groove, the second guide column 521 rotates synchronously to the position of the second vertical moving groove. At this time, the horizontal rotating groove no longer restricts the downward movement of the second guide column 521. At this time, under the combined action of the elastic force of the disc spring 550, the elastic force of the first spring 540 and the pulling force of the insulating pull rod 400, the inner transmission ring 520 accelerates to move away from the static contact 200 with a large acceleration, so that the static contact 200 and the moving contact 300 are instantly separated to a larger spacing position, avoiding the current on the static contact 200 breaking through the air and conducting to the moving contact 300 when the static contact 200 and the moving contact 300 separate slowly, causing unstable conductivity. In addition, the faster the opening speed of the static contact 200 and the moving contact 300, the stronger the arc extinguishing ability of the device.

[0054] When the switch is closed, the insulating pull rod 400 moves upward. After the first spring 540 is compressed to a certain amount, the first spring 540 applies an upward thrust to the intermediate transmission ring 530, and the intermediate transmission ring 530 pushes the outer transmission ring 510 upward. At this time, through the guiding cooperation of the first guide column 511 and the first vertical movement groove, and the guiding cooperation of the second guide column 521 and the second vertical movement groove, the outer transmission ring 510 and the inner transmission ring 520 move upward along their axes synchronously. After the first guide column 511 moves to the top of the spiral lifting groove, as the outer transmission ring 510 continues to move upward along its axis, the first guide column 511 is forced to rise along the spiral lifting groove. At this time, the second guide column 521 has not risen to the top of the second vertical movement groove, so the second guide column 521 is limited by the second vertical movement groove. As the first guide column 511 is forced to rise along the spiral lifting groove, the outer transmission ring 510 and the inner transmission ring 520 rotate relatively, and the second spring 560 is deformed under force. When the inner transmission ring When the second guide post 521 on the inner driving ring 520 moves to the top position of the second vertical moving groove, under the elastic action of the second spring 560, the inner driving ring 520 rotates in the horizontal rotating groove in the opposite direction by a certain angle, so that the relative position between the inner driving ring 520 and the outer driving ring 510 is reset, and then the outer driving ring 510 continues to move upward, and the outer driving ring 510 drives the inner driving ring 520 to move upward through the disc spring 550. When the first guide post 511 moves upward to the highest position of the spiral lifting groove, the inner driving ring 520 is moved upward to the top position of the second vertical moving groove. When in the end position, the upper end surface of the inner transmission ring 520 is flush with the upper end surface of the outer transmission ring 510. At this time, the static contact 200 and the moving contact 300 are in contact with each other, so that the static contact 200 and the moving contact 300 can be stably and reliably closed, preventing the moving contact 300 and the static contact 200 from colliding and wearing each other, and preventing the moving contact 300 and the static contact 200 from vibrating at high speed due to rigid collision between the moving contact 300 and the static contact 200, thereby preventing the problem of high-frequency opening and closing of the moving contact 300 and the static contact 200.

[0055] In a further embodiment, Figure 2As shown, a one-way damping assembly 600 is provided between the outer transmission ring 510 and the inner peripheral wall of the support housing 100. When the outer transmission ring 510 moves upward, the one-way damping assembly 600 forms a damping on the movement of the outer transmission ring 510. The one-way damping assembly 600 includes an outer damping block 610 and an inner damping block 620. The inner damping block 620 is provided on the outer peripheral surface of the outer transmission ring 510, and the outer damping block 610 is rotatably provided on the inner peripheral wall of the support housing 100. An inner groove 630 is provided on the inner circumferential wall of the support housing 100. When the outer transmission ring 510 moves from top to bottom, the inner damping block 620 squeezes the outer damping block 610 so that the outer damping block 610 rotates in the direction away from the inner damping block 620 to the inner groove 630. When the outer transmission ring 510 moves from bottom to top, the inner damping block 620 squeezes the outer damping block 610 so that the outer damping block 610 rotates in the direction close to the inner damping block 620.

[0056] When the gate is opened, the insulating rod 400 moves downward, and the insulating rod 400 drives the intermediate transmission ring 530 to move downward through the first spring 540, and the intermediate transmission ring 530 drives the outer transmission ring 510 to move downward. When the first guide column 511 moves from the spiral lifting groove to the first vertical movement groove, the second guide column 521 also moves from the horizontal rotation groove to the second vertical movement groove. At this time, under the pulling action of the insulating rod 400, the outer transmission ring 510 and the inner transmission ring 520 move downward rapidly. At this time, the inner damping block 620 moves downward rapidly with the outer transmission ring 510, and the inner damping block 620 squeezes the outer damping block 610 into the inner sinking groove 630. At this time, the one-way damping component 600 does not play a damping role.

[0057] When the switch is closed, the insulating rod 400 moves upward, and the insulating rod 400 drives the intermediate transmission ring 530 to move upward through the first spring 540, and the intermediate transmission ring 530 drives the outer transmission ring 510 to move upward. When the inner damping block 620 abuts against the outer damping block 610, the outer transmission ring 510 no longer moves upward. As the insulating rod 400 continues to move upward, the first spring 540 is gradually compressed. When the elastic force of the compressed first spring 540 is greater than the damping force between the inner damping block 620 and the outer damping block 610, the outer transmission ring 510 stops moving upward. At this time, the outer transmission ring 510 breaks through the damping between the outer damping block 610 and the inner damping block 620, and moves upward rapidly under the action of the first spring 540. At this time, the outer transmission ring 510 hits the top of the first vertical moving groove, so that the outer transmission ring 510 is forcibly decelerated. At this time, there is still a certain distance between the static contact 200 and the moving contact 300. Then, as the outer transmission ring 510 rotates in the spiral lifting groove and moves upward, the distance between the static contact 200 and the moving contact 300 gradually decreases until they contact each other, and the closing is completed at this time.

[0058] It can be understood that by setting up a one-way damping assembly 600, a larger thrust can be provided to the movement of the outer transmission ring 510 in the initial stage of closing, so as to increase the closing speed. After the first guide column 511 contacts the top of the first vertical moving groove, the outer transmission ring 510 spirally rises under the guidance of the first guide column 511 and the spiral lifting groove, thereby further reducing the kinetic energy of the outer transmission ring 510 through spiral lifting, so that after the static contact 200 and the moving contact 300 contact, the static contact 200 and the moving contact 300 can be closed stably and reliably, preventing the moving contact 300 and the static contact 200 from high-speed collision and wear.

[0059] In a further embodiment, Figure 3 and Figure 4 As shown, a through hole 131 is opened at the center of the lower end of the vacuum arc chamber 130, and an insulating telescopic tube 700 is arranged in the vacuum arc chamber 130. The insulating telescopic tube 700 is coaxial with the through hole 131 and fixedly connected. A connecting ring 310 is arranged on the outer periphery of the moving contact 300, and the connecting ring 310 is fixedly connected to the upper end of the insulating telescopic tube 700.

[0060] The insulating expansion tube 700 is provided to ensure that the vacuum environment inside the vacuum interrupter 130 is always maintained during the expansion and contraction movement of the moving contact 300 .

[0061] In a further embodiment, Figure 1 and Figure 2 As shown, a stationary contact arm 210 is provided in the upper outlet terminal 110, and the stationary contact arm 210 is connected to the stationary contact 200. A moving contact arm 320 is provided in the lower outlet terminal 120, and a flexible conductive belt 330 is provided at one end of the moving contact arm 320 close to the moving contact 300, and the center of the flexible conductive belt 330 is connected to the moving contact 300.

[0062] The flexible conductive tape 330 is provided to flexibly connect the connection ring 310 and the moving contact 300 , so that the moving contact 300 can always maintain conductive connection with the connection ring 310 .

[0063] In a further embodiment, Figure 7 As shown, a synchronous ring 340 is provided on the circumference of the moving contact 300 , a movable limiting ring groove 341 is opened on the circumference of the synchronous ring 340 , and the lower end of the inner transmission ring 520 is rotatably connected in the movable limiting ring groove.

[0064] The movable limiting ring groove 341 is provided to enable the movable contact 300 to move up and down synchronously with the inner transmission ring 520 and to rotate relatively.

[0065] In a further embodiment, Figure 5 As shown, a first through slot 531 is formed in the circumference of the intermediate transmission ring 530 , and the movable contact arm 320 passes through the first through slot 531 .

[0066] The first through slot 531 is provided to avoid interference between the intermediate transmission ring 530 and the movable contact arm 320 .

[0067] In a further embodiment, one end of the insulating pull rod 400 away from the first spring 540 is fixedly connected to an operating mechanism.

[0068] The operating mechanism serves as a power source, and when the insulating pull rod 400 moves up and down, the operating mechanism provides power to move the insulating pull rod 400 up and down. The operating mechanism can specifically be any one of a spring energy storage operating mechanism or an electromagnetic operating mechanism.

[0069] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0070] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A cable support for conductive connection, characterized in that: include: A support shell, wherein an upper outlet terminal is provided at the upper end of the support shell, and a lower outlet terminal is provided at one side of the lower part of the support shell; A vacuum interrupter is fixedly arranged inside the support shell; A stationary contact, wherein the stationary contact is fixedly arranged inside the support housing, and one end of the stationary contact is located inside the vacuum interrupter; A moving contact, the moving contact is slidably connected to the inside of the support housing, and one end of the moving contact is located inside the vacuum interrupter; An insulating pull rod, the insulating pull rod can move along the axis of the moving contact; An elastic connection component is arranged in the support housing and between the moving contact and the insulating pull rod; The elastic connection assembly is configured to reduce the moving speed of the moving contact when the moving contact is at a preset distance from the static contact when the static contact and the moving contact are closed; The elastic connection assembly is also configured so that when the static contact and the moving contact are opened, the moving contact accelerates away from the static contact; the elastic connection assembly includes an outer transmission ring, an inner transmission ring and an intermediate transmission ring, the upper end of the insulating pull rod is fixedly connected to the intermediate transmission ring through a first spring, the upper part of the intermediate transmission ring is coaxially rotatably connected to the outer transmission ring, and the outer transmission ring can move synchronously with the intermediate transmission ring along the axis, the inner transmission ring is coaxially arranged on the inner periphery of the outer transmission ring, and the inner transmission ring and the moving contact can move synchronously along the axis of the inner transmission ring; A disc spring is arranged between the inner transmission ring and the outer transmission ring, and the disc spring can be compressed along the axial direction of the outer transmission ring. A second spring is also arranged between the inner transmission ring and the outer transmission ring. When the outer transmission ring rotates, the second spring can drive the inner transmission ring to rotate synchronously. A first guide groove is arranged on the inner peripheral wall of the support shell, and a first guide column is arranged on the outer peripheral wall of the outer transmission ring. The first guide column is slidably connected in the first guide groove. The first guide groove includes a spiral lifting groove and a first vertical moving groove, the spiral lifting groove and the vertical moving groove are smoothly connected, and the vertical moving groove is located in the middle of the spiral lifting groove; A fixing ring is also fixedly connected inside the support housing. The fixing ring is coaxial with the inner transmission ring and is located between the outer peripheral wall of the inner transmission ring and the outside of the vacuum arc extinguishing chamber. A second guide groove is opened on the outer peripheral wall of the fixing ring. A second guide column is provided on the inner peripheral wall of the inner transmission ring. The second guide column is slidably connected in the second guide groove. The second guide groove includes a horizontal rotation groove and a second vertical movement groove, the horizontal rotation groove corresponds to the spiral lifting groove, and the first vertical movement groove corresponds to the second vertical movement groove.

2. A cable support for conductive connection according to claim 1, characterized in that: A one-way damping component is provided between the outer transmission ring and the inner peripheral wall of the support shell. When the outer transmission ring moves upward, the one-way damping component forms a damping on the movement of the outer transmission ring.

3. A cable support for conductive connection according to claim 2, characterized in that: The one-way damping assembly comprises an outer damping block and an inner damping block, wherein the inner damping block is arranged on the outer peripheral surface of the outer transmission ring, and the outer damping block is rotatably arranged on the inner peripheral wall of the support shell, and an inner sinking groove is provided on the inner peripheral wall of the support shell; When the outer transmission ring moves downward from top to bottom, the inner damping block squeezes the outer damping block, so that the outer damping block rotates in the direction away from the inner damping block into the inner sinking groove; When the outer transmission ring moves upward from bottom to top, the inner damping block squeezes the outer damping block so that the outer damping block rotates in a direction close to the inner damping block.

4. A cable support for conductive connection according to claim 1, characterized in that: The intermediate transmission ring is provided with a first through slot in the circumferential direction, and the movable contact arm passes through the first through slot.

5. A cable support for conductive connection according to claim 1, characterized in that: A through hole is provided at the center of the lower end of the vacuum arc extinguishing chamber, and an insulating telescopic tube is provided in the vacuum arc extinguishing chamber, and the insulating telescopic tube is coaxial with the through hole and fixedly connected; A connecting ring is arranged on the outer periphery of the moving contact, and the connecting ring is fixedly connected to the upper end of the insulating telescopic tube.

6. A cable support for conductive connection according to claim 1, characterized in that: A static contact arm is provided in the upper outlet terminal, and the static contact arm is connected to the static contact; A moving contact arm is arranged in the lower outlet terminal, a flexible conductive belt is arranged at one end of the moving contact arm close to the moving contact, and the center of the flexible conductive belt is connected to the moving contact.

7. A cable support for conductive connection according to claim 1, characterized in that: A synchronous ring is arranged on the circumference of the moving contact, a movable limiting ring groove is opened on the circumference of the synchronous ring, and the lower end of the inner transmission ring is rotatably connected in the movable limiting ring groove.

8. A cable support for conductive connection according to claim 1, characterized in that: One end of the insulating pull rod away from the first spring is fixedly connected with an operating mechanism.

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