Three-phase load isolation switch

Abstract

The utility model relates to a three-phase load isolating switch, which comprises a vertical column, a cross arm support and a switch, an operating handle mechanism; an operating lever mechanism; the operation yoke plate mechanism comprises a rotating rod; the isolating switch mechanism comprises a base fixed on the cross arm bracket, a rotating bracket rotationally connected to the base, a pressure spring bolt of which one end is rotationally connected with the rotating bracket, a pressure spring sleeved on the pressure spring bolt, and a pressure spring baffle fixed on the base; the pressure spring baffle is provided with a through hole for the end, away from the rotating support, of the pressure spring bolt to penetrate through and swing, and the rotating support is fixed to the rotating rod. The utility model has the beneficial effects that the action speed of opening and closing is effectively improved, the arc existence time is shortened, and the use is safer.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of disconnecting switch, especially to a three -phase load disconnecting switch. BACKGROUND

[0002] Disconnecting switch is a kind of switch equipment mainly used for "isolating power supply, switching operation, to connect and cut off small current circuit". When disconnecting switch is in the position of separation, there is the insulating distance meeting the prescribed requirements and the obvious disconnecting mark between contact; when disconnecting switch is in the position of combination, it can bear the current under normal circuit conditions and the current under abnormal conditions (for example, short circuit) in the prescribed time. Generally used as high-voltage disconnecting switch, i.e. disconnecting switch with rated voltage above 1kV, and its working principle and structure are relatively simple, but due to large use quantity, high working reliability requirement, it has greater influence on the design, establishment and safe operation of transformer substation and power plant.

[0003] Chinese patent CN213546191U discloses a high-voltage disconnecting switch, which comprises a disconnecting switch, a steel support, a transmission part, an operating mechanism and a phase-to-phase connection joint, the operating mechanism is installed on one side of the steel support, the disconnecting switch is installed on the top of the steel support, the transmission part is arranged between the operating mechanism and the disconnecting switch, the disconnecting switch is composed of three single-pole switches, each single-pole switch is composed of a conductive part, a chassis part, a pull rod insulator and two support insulators, the chassis part is fixed on the top of the steel support, the support insulator is arranged between the conductive part and the chassis part, the conductive part is arranged on the top of the support insulator, and the pull rod insulator is arranged between the two support insulators and connected with the conductive linkage support and linkage crank arm at the upper and lower ends.

[0004] The above patent drives the transmission part by the operating mechanism, so that the transmission shaft rotates, and the transmission shaft drives the pull rod insulator to realize the opening and closing action, so the speed of opening and closing action is determined by the action speed of the operating mechanism. When manually operating, it is difficult to quickly open and close, so the existence time of electric arc is easily prolonged, which causes the damage of disconnecting switch. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies in the prior art, the utility model aims to provide a three-phase load disconnecting switch to solve the above problems.

[0006] The technical scheme of the utility model is realized as follows: a three-phase load disconnecting switch, comprising:

[0007] A stand column, the top of the stand column is provided with a cross arm support;

[0008] An operating handle mechanism;

[0009] An operating rod mechanism;

[0010] An operating plate coupling mechanism, wherein the operating plate coupling mechanism comprises a rotating rod;

[0011] An isolating switch mechanism, comprising a base fixed to a cross arm bracket, a rotating bracket rotatably connected to the base, a compression spring bolt having one end rotatably connected to the rotating bracket, a compression spring sleeved on the compression spring bolt, and a compression spring baffle fixed to the base, the compression spring baffle having a through hole for the end of the compression spring bolt away from the rotating bracket to pass through and swing, the rotating bracket being fixed to a rotating rod;

[0012] When the isolating switch mechanism is in a closed state, the horizontal height of the connection point between the compression spring bolt and the rotating bracket is higher than the center of the through hole; when the isolating switch mechanism is in an open state, the horizontal height of the connection point between the compression spring bolt and the rotating bracket is lower than the center of the through hole.

[0013] By adopting the above technical solution, the driving operating handle mechanism drives the rotating rod to rotate through the operating rod mechanism, thereby driving the disconnector mechanism to perform opening and closing actions. When the opening action is performed, the rotating rod rotates forward, and the connection point of the compression spring bolt and the rotating bracket swings downward and approaches the through hole. The compression spring bolt passes through the through hole, thereby compressing the compression spring. As the rotating rod continues to rotate, when the connection point of the compression spring bolt and the rotating bracket is lower than the center of the through hole, the compression spring releases energy and pushes the connection point of the compression spring bolt and the rotating bracket to swing downward quickly, thereby achieving the effect of rapid opening; similarly, when the closing action is performed, the rotating rod is reversed, and the connection point of the compression spring bolt and the rotating bracket swings upward, compressing the compression spring. When the connection point is higher than the center of the through hole, the compression spring releases energy and pushes the connection point of the compression spring bolt and the rotating bracket to swing upward quickly, thereby achieving the effect of rapid closing; effectively improving the opening and closing action speed, shortening the arc existence time, and making it safer to use.

[0014] The utility model is further configured as follows: the isolating switch mechanism further includes:

[0015] The retaining ring is protruding from the outer wall of one end of the compression spring bolt close to the rotating bracket, and the two ends of the compression spring are respectively in contact with the retaining ring and the compression spring baffle.

[0016] By adopting the above technical solution, the retaining ring can effectively limit the compression spring, making the transmission of the compression spring force more efficient.

[0017] The utility model is further configured as follows: the isolating switch mechanism further includes:

[0018] an outgoing contact, wherein the outgoing contact is mounted on the base via a first ceramic insulator;

[0019] An incoming line contact, the incoming line contact being mounted on the base via a second ceramic insulator and having a conductive clip connected thereto;

[0020] A conductive rod, one end of which is rotatably connected to the outgoing contact, and the other end of which is matched with the conductive clamp to clamp;

[0021] A third ceramic insulator, which is fixed on the rotating support, and the upper end of the third ceramic insulator is provided with a conductive rod support, and two pulleys are arranged on the conductive rod support and are distributed above and below and are spaced apart;

[0022] An arc extinguishing mechanism;

[0023] The conductive rod passes through the two pulleys.

[0024] By adopting the above technical scheme, when the rotating rod rotates, the conductive rod is swung by the third ceramic insulator, and when the conductive rod is matched with the conductive clamp to clamp, it is closing, and when the conductive rod is separated from the conductive clamp, it is opening, the pulleys can better protect the conductive rod when driving the conductive rod to open and close, and reduce friction.

[0025] The utility model further sets up: the operating handle mechanism includes:

[0026] A handle mechanism mounting plate, which is fixedly installed on the stand, and a rotating shaft, which is transversely arranged, is rotatably connected in the handle mechanism mounting plate;

[0027] A welding pull plate, one end of which is fixed on the rotating shaft, and the other end of which is connected with the lower end of the operating rod mechanism;

[0028] An operating handle, one end of which is fixed on the rotating shaft;

[0029] The operating handle and the welding pull plate form an included angle on the rotating shaft.

[0030] By adopting the above technical scheme, when opening, the operating handle is pulled downward, the welding pull plate is rotated downward, the operating rod mechanism is driven to move downward, and the rotating rod is positively rotated to open; when closing, the operating handle is pushed upward, the rotating rod is reversely rotated to close, and the operation is very simple and convenient.

[0031] The utility model further sets up: the operating connecting plate mechanism further includes:

[0032] An operating connecting plate support, which is fixed on the rotating rod;

[0033] A welding connecting plate, one end of which is fixedly connected with the operating connecting plate support, and the other end of which is rotatably connected with the upper end of the operating rod mechanism and extends out of the operating connecting plate support.

[0034] By adopting the technical scheme, when the operating rod mechanism moves downward, the operating connecting plate support can be effectively driven to rotate forward, so that the disconnecting is realized; when the operating rod mechanism moves upward, the operating connecting plate support can be effectively driven to rotate reversely, so that the closing is realized.

[0035] The utility model further provides for: the isolating switch mechanism is equipped with three even side by side installation in cross arm support, rotating rod fixed connection three the rotating support of isolating switch mechanism.

[0036] By adopting the technical scheme, three isolating switch mechanisms can be simultaneously driven to open and close by one rotating rod. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the drawings needed to be used in the embodiment or prior art description will be briefly introduced as follows, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creative labor.

[0038] Figure 1 For the closing structure diagram of the utility model Figure 1 ;

[0039] Figure 2 For Figure 1 The structure diagram of A in it is shown;

[0040] Figure 3 For the closing structure diagram of the utility model Figure 2 ;

[0041] Figure 4 For Figure 3 The structure diagram of B in it is shown;

[0042] Figure 5 For the opening structure diagram of the utility model;

[0043] Figure 6 For Figure 5 The structure diagram of C in it is shown;

[0044] Figure 7 For the structure diagram of operating handle mechanism in the utility model;

[0045] Figure 8 For the closing structure plan view of the utility model;

[0046] Figure 9 For Figure 8 The structure section view of b-b direction in closing;

[0047] Figure 10This is the structural cross-sectional view in the bb direction when the switch is open;

[0048] Figure 11 for Figure 8 Structural cross-sectional view in the aa direction;

[0049] Figure 12 for Figure 8 Structural cross-sectional view in the cc direction. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0051] like Figures 1-12 As shown, the utility model discloses a three-phase load isolating switch, comprising:

[0052] A column 1, wherein a cross arm support 10 is provided on the top of the column 1;

[0053] Operating handle mechanism 2;

[0054] Operating lever mechanism 3;

[0055] An operating plate link mechanism 4, wherein the operating plate link mechanism 4 includes a rotating rod 40;

[0056] The isolating switch mechanism 5 includes a base 50 fixed to the crossarm bracket 10, a rotating bracket 51 rotatably connected to the base 50, a compression spring bolt 52 with one end rotatably connected to the rotating bracket 51, a compression spring 53 sleeved on the compression spring bolt 52, and a compression spring baffle 54 fixed to the base 50. The compression spring baffle 54 has a through hole 540 for the end of the compression spring bolt 52 away from the rotating bracket 51 to pass through and swing. The rotating bracket 51 is fixed to the rotating rod 40.

[0057] In which, when the isolating switch mechanism 5 is in the closed state, the horizontal height of the connection point between the compression spring bolt 52 and the rotating bracket 51 is higher than the center of the through hole 540; when the isolating switch mechanism 5 is in the open state, the horizontal height of the connection point between the compression spring bolt 52 and the rotating bracket 51 is lower than the center of the through hole 540.

[0058] By adopting the technical scheme, the driving operation handle mechanism 2 drives the rotating rod 40 to rotate through the operating rod mechanism 3, thereby driving the isolating switch mechanism 5 to perform the opening and closing actions; when the opening action is performed, the rotating rod 40 rotates forward, the connecting point of the compression spring peg 52 and the rotating support 51 swings downward to approach the through hole 540, the compression spring peg 52 passes through the through hole 540, thereby compressing the compression spring 53; when the connecting point is below the center of the through hole 540, the compression spring 53 releases energy to push the connecting point of the compression spring peg 52 and the rotating support 51 to swing downward quickly, thereby achieving the effect of quick opening; similarly, when the closing action is performed, the rotating rod 40 reverses, the connecting point of the compression spring peg 52 and the rotating support 51 swings upward to compress the compression spring 53; when the connecting point is above the center of the through hole 540, the compression spring 53 releases energy to push the connecting point of the compression spring peg 52 and the rotating support 51 to swing upward quickly, thereby achieving the effect of quick closing; the opening and closing action speeds are effectively improved, the time of arc existence is shortened, and the use is safer.

[0059] In the embodiment of the utility model, the isolating switch mechanism 5 further includes:

[0060] The stop ring 520 is protruded on the outer wall of one end of the compression spring peg 52 close to the rotating support 51, and the two ends of the compression spring 53 are respectively abutted on the stop ring 520 and the compression spring baffle 54.

[0061] By adopting the technical scheme, the stop ring 520 can effectively limit the compression spring 53, and the force transmission of the compression spring 53 is more efficient.

[0062] In the embodiment of the utility model, the isolating switch mechanism 5 further includes:

[0063] The outgoing line contact 55 is installed on the base 50 through the first ceramic insulator 550;

[0064] The incoming line contact 56 is installed on the base 50 through the second ceramic insulator 560, and the conductive clamp 561 is connected to the incoming line contact 56;

[0065] The conductive rod 57 is rotatably connected to one end of the outgoing line contact 55, and the other end is clamped in cooperation with the conductive clamp 561;

[0066] The third ceramic insulator 570 is fixed on the rotating support 51, the upper end of the third ceramic insulator 570 is provided with the conductive rod support 571, the conductive rod support 571 is provided with two pulleys 572, and the two pulleys 572 are distributed above and below and have a spacing therebetween;

[0067] The arc extinguishing mechanism 58;

[0068] Wherein, the conductive rod 57 passes through between two pulleys 572.

[0069] By adopting the above technical scheme, when the rotating rod 40 rotates, the conductive rod 57 is swung by the third ceramic insulator 570, and when the conductive rod 57 is clamped by the conductive clamp 561, it is closed, and when the conductive rod 57 is separated from the conductive clamp 561, it is opened, the pulley 572 can better protect the conductive rod 57 when driving the conductive rod 57 to open and close, and reduce friction.

[0070] In the embodiment of the utility model, the operation handle mechanism 2 includes:

[0071] Handle mechanism mounting plate 20, handle mechanism mounting plate 20 is fixedly installed on stand 1, the handle mechanism mounting plate 20 is rotationally connected with the transversely arranged rotating shaft 21 in;

[0072] Welding pull plate 22, one end of welding pull plate 22 is fixed on rotating shaft 21, and the other end is connected with the lower end of operating lever mechanism 3;

[0073] Operating handle 23, one end of operating handle 23 is fixed on rotating shaft 21;

[0074] Wherein, the operating handle 23 and the welding pull plate 22 form an included angle on the rotating shaft 21.

[0075] By adopting the above technical scheme, when opening, the operating handle 23 is pulled down, the welding pull plate 22 is rotated downward, the operating lever mechanism 3 is driven to move downward, and the rotating rod 40 is positively rotated to open; when closing, the operating handle 23 is pushed up, the rotating rod 40 is reversely rotated to close, and the operation is very simple and convenient.

[0076] In the embodiment of the utility model, the operation connecting plate mechanism 4 further includes:

[0077] Operation connecting plate support 41, operation connecting plate support 41 is fixed on rotating rod 40;

[0078] Welding connecting plate 42, one end of welding connecting plate 42 is fixedly connected with operation connecting plate support 41, and the other end is rotatably connected with the upper end of operating lever mechanism 3 and operation connecting plate support 41.

[0079] By adopting the above technical scheme, when the operating lever mechanism 3 moves downward, the operation connecting plate support 41 can be effectively driven to rotate positively, so that the opening is realized;When the operating lever mechanism 3 moves upward, the operation connecting plate support 41 can be effectively driven to reverse, so that the closing is realized.

[0080] In the embodiment of the utility model, the isolator mechanism 5 is provided with three isolator mechanisms 5 which are installed side by side on the cross arm support 10, and the rotating rod 40 is fixedly connected with the rotating supports 51 of the three isolator mechanisms 5.

[0081] By adopting the above technical scheme, the three isolator mechanisms 5 can be simultaneously driven by the rotating rod 40 to perform the opening and closing actions.

[0082] The above merely describes the preferred embodiments of the utility model and is not intended to limit the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A three-phase load isolating switch, characterized in that: include: A column (1), wherein a cross arm bracket (10) is provided on the top of the column (1); operating handle mechanism (2); operating lever mechanism (3); An operating plate link mechanism (4), wherein the operating plate link mechanism (4) comprises a rotating rod (40); An isolating switch mechanism (5) includes a base (50) fixed on a cross arm bracket (10), a rotating bracket (51) rotatably connected to the base (50), a compression spring bolt (52) with one end rotatably connected to the rotating bracket (51), a compression spring (53) sleeved on the compression spring bolt (52), and a compression spring baffle (54) fixed to the base (50), wherein the compression spring baffle (54) is provided with a through hole (540) for the end of the compression spring bolt (52) away from the rotating bracket (51) to pass through and swing, and the rotating bracket (51) is fixed to the rotating rod (40); When the isolating switch mechanism (5) is in a closed state, the horizontal height of the connection point between the compression spring bolt (52) and the rotating bracket (51) is higher than the center of the through hole (540); when the isolating switch mechanism (5) is in an open state, the horizontal height of the connection point between the compression spring bolt (52) and the rotating bracket (51) is lower than the center of the through hole (540).

2. A three-phase load isolating switch according to claim 1, characterized in that: The isolating switch mechanism (5) further comprises: A retaining ring (520) is protruding from the outer wall of one end of the compression spring bolt (52) close to the rotating bracket (51), and two ends of the compression spring (53) are respectively in contact with the retaining ring (520) and the compression spring baffle (54).

3. A three-phase load isolating switch according to claim 1, characterized in that: The isolating switch mechanism (5) further comprises: an outgoing line contact (55), the outgoing line contact (55) being mounted on the base (50) via a first ceramic insulator (550); An incoming line contact (56), the incoming line contact (56) being mounted on the base (50) via a second ceramic insulator (560), and the incoming line contact (56) being connected to a conductive clip (561); A conductive rod (57), one end of which is rotatably connected to the outgoing contact (55), and the other end of which is clamped in cooperation with a conductive clamp (561); A third ceramic insulator (570), the third ceramic insulator (570) is fixed on the rotating bracket (51), a conductive rod bracket (571) is provided at the upper end of the third ceramic insulator (570), and two pulleys (572) are provided on the conductive rod bracket (571), and the two pulleys (572) are distributed up and down and a distance is provided between them; Arc extinguishing mechanism (58); Wherein, the conductive rod (57) passes between the two pulleys (572).

4. A three-phase load isolating switch according to claim 1, characterized in that: The operating handle mechanism (2) comprises: A handle mechanism mounting plate (20), the handle mechanism mounting plate (20) being fixedly mounted on the column (1), and a horizontally arranged rotating shaft (21) being rotatably connected within the handle mechanism mounting plate (20); a welding pull plate (22), one end of which is fixed to the rotating shaft (21) and the other end of which is connected to the lower end of the operating lever mechanism (3); an operating handle (23), one end of the operating handle (23) being fixed on the rotating shaft (21); Wherein, the operating handle (23) and the welding pull plate (22) form an angle on the rotating shaft (21).

5. A three-phase load isolating switch according to claim 1, characterized in that: The operating link plate mechanism (4) further comprises: An operating link plate bracket (41), wherein the operating link plate bracket (41) is fixed on the rotating rod (40); A welding connecting plate (42) is provided, wherein one end of the welding connecting plate (42) is fixedly connected to the operating connecting plate bracket (41), and the other end extends out of the operating connecting plate bracket (41) and is rotatably connected to the upper end of the operating lever mechanism (3).

6. A three-phase load isolating switch according to claim 1, characterized in that: The isolating switch mechanism (5) is provided with three rotating brackets (51) which are all mounted in parallel on the cross arm bracket (10), and the rotating rod (40) is fixedly connected to the three rotating brackets (51) of the isolating switch mechanism (5).

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