Vertical opening type disconnecting switch

Abstract

The invention discloses a vertical open type isolating switch, which comprises a static contact seat, a static contact, a static contact, a static contact and a static contact, and is characterized in that the static contact seat is provided with an open slot; a tool arm base; the tool arm driving shaft is movably mounted on the tool arm base; the tool arm moving seat is hinged to the tool arm base; the conductive tool arm is mounted on the tool arm moving seat and can rotate along with the tool arm moving seat until the conductive tool arm is clamped into the open slot, a radial bulge structure is arranged on the peripheral wall of the conductive tool arm, and the conductive tool arm can rotate along the axis of the conductive tool arm relative to the tool arm moving seat; and the transmission mechanism is used for connecting the tool arm driving shaft with the conductive tool arm in a transmission manner, and can enable the radial bulge structure on the conductive tool arm to tension the open slot after the conductive tool arm is clamped into the open slot. When the conductive cutter arm starts to enter the open slot, the radial bulge structure does not tension the two opposite side walls of the open slot, so that the resistance is not large when the conductive cutter arm enters and exits the open slot, and after the conductive cutter arm is clamped into the open slot, the radial bulge structure continues to rotate and is gradually opened to tension the two opposite side walls of the open slot, so that the conductive cutter arm is in tight contact, and sufficient contact force is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of isolating switches, in particular to a vertical opening isolating switch. Background Art

[0002] In the power system, the isolating switch is an important control device that is responsible for ensuring the safe operation of the equipment and the safety of the maintenance personnel. Currently, the isolating switch products on the market mainly adopt the following structural forms: horizontal rotation type, vertical opening type, horizontal telescopic type, vertical telescopic type and three-column horizontal rotation type. These structural forms each have their own characteristics and applicable scenarios.

[0003] In particular, vertical opening disconnectors are widely used in power distribution network products due to their simple structure and intuitive operation, especially for occasions with lower voltage levels. Disconnectors of this structure usually use vertical opening blade arms for closing and opening operations, and the closing and opening of the moving and static contacts are achieved by direct operating force. Although this closing and opening method is simple in design, the resistance generated during the closing process is large, resulting in large resistance during closing and opening, which limits its use in application scenarios with larger contact opening distances or higher contact force requirements. It cannot be applied to working conditions with higher voltage levels and larger current parameters, resulting in a significant limitation on the scope of application of the vertical opening disconnector structure. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a vertical opening isolating switch, which can reduce the resistance when closing the switch.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0006] A vertical opening isolating switch comprises: a stationary contact seat, having an opening slot with an upper opening; a knife arm base; a knife arm driving shaft, movably mounted on the knife arm base; a knife arm moving seat, hinged to the knife arm base; a conductive knife arm, mounted on the knife arm moving seat and capable of rotating with the knife arm moving seat around a hinge axis until it is inserted into the opening slot, wherein the peripheral wall of the conductive knife arm is provided with a radial protrusion structure capable of inserting into the opening slot, and the conductive knife arm can rotate and move along its own axis relative to the knife arm moving seat; a transmission mechanism, which is used to connect the knife arm driving shaft and the conductive knife arm in a transmission manner, so that the movable knife arm driving shaft can drive the conductive knife arm to insert into the opening slot, and can continue to drive the conductive knife arm to rotate along its own axis after the conductive knife arm is inserted into the opening slot, so that the radial protrusion structure on the conductive knife arm tightens the two opposite side walls of the opening slot.

[0007] Furthermore, the conductive knife arm has an open state, a pre-closing state and a closed state, and the knife arm driving shaft can drive the conductive knife arm to reach the open state, the pre-closing state and the closed state in sequence through a transmission mechanism; in the open state, the conductive knife arm is separated from the opening slot; in the pre-closing state, the conductive knife arm is inserted into the opening slot; in the closed state, the conductive knife arm is inserted into the opening slot, and the radial protrusion structure is opened along the width direction of the opening slot to tighten the two opposite side walls of the opening slot; and the overall width of the conductive knife arm at the radial protrusion structure in the pre-closing state is smaller than the overall width of the conductive knife arm at the radial protrusion structure in the closed state; when the conductive knife arm starts to enter the opening slot to the pre-closing state, the overall width of the conductive knife arm at the radial protrusion structure is smaller than the width of the opening slot.

[0008] Furthermore, the transmission mechanism includes a knife arm driving crank arm, a telescopic adjustment rod assembly and a knife arm connecting arm, the knife arm driving crank arm is connected to the knife arm driving shaft and rotates synchronously with the knife arm driving shaft; one end of the telescopic adjustment rod assembly is movably connected to the knife arm driving crank arm deviating from the position of the knife arm driving shaft, and the other end is hinged to the knife arm connecting arm, and the two ends of the telescopic adjustment rod assembly can be adaptively telescoped; the knife arm connecting arm is fixedly connected to the conductive knife arm.

[0009] Furthermore, a connecting ball is provided at one end of the knife arm driving crank arm away from the knife arm driving shaft, and the telescopic adjustment rod assembly is ball-connected to the connecting ball so as to be able to rotate around the center of the connecting ball.

[0010] Furthermore, the telescopic adjustment rod assembly includes a universal joint connecting rod and a transmission connecting rod, and the transmission connecting rod is provided with a movable groove extending along its own length direction; one end of the transmission connecting rod is hinged to the knife arm connecting arm, and the other end is provided with a through hole extending to the movable groove; one end of the universal joint connecting rod is ball-connected to the connecting ball, and the other end passes through the through hole and extends into the movable groove and can move along the movable groove; a first compression spring is installed in the movable groove, one end of the first compression spring is abutted against the end wall of the movable groove away from the universal joint connecting rod, and the other end is abutted against the universal joint connecting rod.

[0011] Furthermore, the cross-sectional profile of the through hole is smaller than the movable groove, one end of the universal joint connecting rod extending into the movable groove is connected to a limit head, and the limit head has a larger profile than the through hole.

[0012] Furthermore, the static contact seat includes a base plate, vertical plates are provided on both sides of the base plate in the width direction, spring plates are installed on the inner sides of the vertical plates, the base plate and the spring plates on both sides define an open groove, and the inner side walls of the two spring plates are two opposite side walls of the open groove.

[0013] Furthermore, a partition portion extending toward the vertical plate on the corresponding side is provided at the upper end of the spring sheet, and a mounting portion connected and fixed to the vertical plate is provided at one end of the partition portion facing away from the spring sheet.

[0014] Furthermore, a second compression spring is sandwiched between the mounting portion and the spring sheet, and the mounting portion is provided with a limiting column for the second compression spring to be sleeved.

[0015] Furthermore, a fitting plate is provided at the center of the upper end surface of the base plate, and limiting plates extending vertically upward are provided on both sides of the width direction of the fitting plate. The limiting plate is located on the side of the spring sheet on the corresponding side that is away from the mounting portion, and is used to limit the elastic deformation of the two spring sheets closing inward. The fitting plate and the base plate are provided with corresponding holes for being connected and fixed by screws, and the screws have screw heads for pressing the fitting plate, and the screw heads are in contact with the outer peripheral wall of the conductive knife arm in the pre-closing state and the closing state.

[0016] The present invention has the following beneficial effects:

[0017] The knife arm moving seat is hinged to the knife arm base, so that the conductive knife arm can rotate with the knife arm moving seat around the hinge axis until it is inserted into or disengaged from the opening groove to complete closing or opening the switch; and through the transmission of the transmission mechanism, the knife arm driving shaft can continue to drive the conductive knife arm to rotate along its own axis only after the conductive knife arm is inserted into the opening groove, so that the radial protrusion structure on the conductive knife arm tightens the two opposite side walls of the opening groove, so that when entering the opening groove, the radial protrusion structure does not tighten the two opposite side walls of the opening groove, so that the resistance when entering and exiting the opening groove is not large, and after being inserted into the opening groove, the radial protrusion structure will continue to rotate and gradually open to tighten the two opposite side walls of the opening groove, so that the contact is tight and sufficient contact force is guaranteed, but the resistance when closing and opening the switch is reduced, so that it can meet more usage scenarios.

[0018] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0020] Figure 1 It is a schematic diagram of the structure of the opening state of the present invention;

[0021] Figure 2 yes Figure 1 A front view of

[0022] Figure 3 yes Figure 2 A magnified view of point A;

[0023] Figure 4It is a schematic diagram of the process state between the opening state and the pre-closing state;

[0024] Figure 5 It is a top view of the pre-closing state;

[0025] Figure 6 yes Figure 5 Cross-sectional view at BB;

[0026] Figure 7 It is a top view of the closed state;

[0027] Figure 8 yes Figure 7 Cross-sectional view at CC.

[0028] Legend:

[0029] The static contact seat 100, the opening slot 101, the base plate 110, the vertical plate 111, the spring piece 120, the partition part 121, the mounting part 122, the limiting column 123, the second compression spring 130, the fitting plate 140, the limiting plate 141, the screw head 150, and the support seat 160;

[0030] Knife arm base 200;

[0031] Knife arm drive shaft 300, connecting flange 310, positioning sleeve 320;

[0032] Knife arm motion seat 400;

[0033] Conductive blade arm 500, radial protrusion structure 510;

[0034] Transmission mechanism 600 , knife arm driving crank arm 610 , connecting ball 611 , telescopic adjustment rod assembly 620 , universal joint connecting rod 621 , transmission connecting rod 622 , movable groove 623 , through hole 624 , first compression spring 625 , limit head 626 , knife arm connecting arm 630 . DETAILED DESCRIPTION

[0035] 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.

[0036] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0037] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0038] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0039] Please refer to Figure 1 and Figure 2 A vertical opening isolating switch in a preferred embodiment of the present invention includes a static contact seat 100, a knife arm base 200, a knife arm driving shaft 300, a knife arm moving seat 400, a conductive knife arm 500 and a transmission mechanism 600.

[0040] The static contact seat 100 has an opening slot 101 with an upper opening; the knife arm driving shaft 300 is movably mounted on the knife arm base 200; the knife arm motion seat 400 is hinged to the knife arm base 200; the conductive knife arm 500 is mounted on the knife arm motion seat 400 and can rotate around the hinge axis with the knife arm motion seat 400 until it is snapped into the opening slot 101, the peripheral wall of the conductive knife arm 500 is provided with a radial protrusion structure 510 that can be snapped into the opening slot 101, the conductive knife arm 500 can rotate relative to the knife arm motion seat 400 along its own axis, the knife arm motion seat 400 is provided with a rotating movable hole for the conductive knife arm 500 to pass through, so as to provide a rotation guide for the conductive knife arm 500, the conductive knife arm 500 is axially fixed on the knife arm motion seat 400, and the axially fixed square There can be many types, for example, the conductive knife arm 500 is connected to the knife arm motion seat 400 through a rotating shaft, a threaded hole is provided at the bottom of the conductive knife arm 500, the knife arm motion seat 400 is provided with a rotating hole aligned with the threaded hole and having a larger profile than the threaded hole, the rotating shaft includes a shaft head, a rotating shaft adapted to the rotating hole and a threaded shaft adapted to the threaded hole, the shaft head, the rotating shaft and the threaded shaft are coaxial and the diameters decrease successively, the threaded shaft is threadedly connected to the threaded hole, the rotating shaft is rotatably installed in the rotating hole, the diameter of the conductive knife arm 500 is larger than the rotating hole, the shaft head and the conductive knife arm 500 are located on both sides of the rotating hole to achieve axial positioning and fixing of the conductive knife arm 500, and the rotating shaft is rotatably installed in the rotating hole to achieve the rotational guidance of the conductive knife arm 500 along its own rotation. Of course, in other embodiments, the conductive knife arm 500 can also be axially limited and fixed by other methods such as a shoulder, a limit nut, etc. For example, the conductive knife arm 500 is threadedly connected with two spaced limit nuts, and the knife arm motion seat 400 is located between the two limit nuts, so as to achieve axial fixing of the conductive knife arm 500. The transmission mechanism 600 is used to connect the knife arm driving shaft 300 and the conductive knife arm 500, so that the knife arm driving shaft 300 can drive the conductive knife arm 500 to snap into the opening slot 101, and can continue to drive the conductive knife arm 500 to rotate along its own axis after the conductive knife arm 500 snaps into the opening slot 101, so that the radial protrusion structure 510 on the conductive knife arm 500 tightens the two opposite side walls of the opening slot 101. Specifically, the radial protrusion structure 510 is protrudingly arranged on the two opposite sides of the conductive knife arm 500.

[0041] The present invention provides a vertical opening isolating switch, which is hinged to the knife arm base 200 by using the knife arm moving seat 400, so that the conductive knife arm 500 can rotate around the hinge axis with the knife arm moving seat 400 to be inserted into or separated from the opening groove 101, thereby completing the closing or opening of the switch; and through the transmission of the transmission mechanism 600, the knife arm driving shaft 300 can continue to drive the conductive knife arm 500 to rotate along its own axis only after the conductive knife arm 500 is inserted into the opening groove 101, so that the radial protrusion structure 510 on the conductive knife arm 500 tightens the two sides of the opening groove 101. Relative side walls, so that when entering the opening slot 101, the radial protrusion structure 510 does not open to tighten the two opposite side walls of the opening slot 101, so that the resistance when entering and exiting the opening slot 101 is not large. After being inserted into the opening slot 101, the radial protrusion structure 510 will continue to rotate and gradually open to tighten the two opposite side walls of the opening slot 101, so that the conductive knife arm 500 and the static contact seat 100 are in close contact, ensuring sufficient contact force, but reducing the resistance when closing and opening the switch, so that it can meet more usage scenarios.

[0042] In some embodiments of the present invention, the conductive knife arm 500 has an open state, a pre-closed state, and a closed state, and the knife arm drive shaft 300 can drive the conductive knife arm 500 to reach the open state, the pre-closed state, and the closed state in sequence through the transmission mechanism 600. Figure 1 As shown, in the off state, the conductive blade arm 500 is separated from the opening slot 101. Figure 5 In the pre-closing state shown in FIG. 1 , the conductive blade arm 500 is inserted into the opening slot 101. Figure 7 As shown, in the closed state, the conductive blade arm 500 is inserted into the opening slot 101, and in the closed state, the radial protrusion structure 510 is opened along the width direction of the opening slot 101 to tighten the two opposite side walls of the opening slot 101, so as to achieve tight contact.

[0043] like Figure 5 and Figure 7 As shown, the overall width of the conductive blade arm 500 at the radial protrusion structure 510 in the pre-closing state is smaller than the overall width of the conductive blade arm 500 at the radial protrusion structure 510 in the closing state. The width here is based on the width direction of the opening slot 101, that is, Figure 6 The left and right directions in the figure are taken as the reference. Figure 5 As shown, when the conductive knife arm 500 starts to enter the opening slot 101 and reaches the pre-closing state, the overall width of the conductive knife arm 500 at the radial protrusion structure 510 is smaller than the width of the opening slot 101, that is, in the process of the conductive knife arm 500 moving from the opening state to the pre-closing state, the radial protrusion structure 510 does not contact the two side walls in the width direction of the opening slot 101, that is, in the process of being inserted into the opening slot 101, the side walls on both sides of the opening slot 101 will hardly cause resistance to the radial protrusion structure 510.

[0044] like Figure 6 and Figure 8 As shown, when the conductive blade arm 500 moves from the pre-closing state to the closing state, the conductive blade arm 500 only rotates along its own axis and does not move in other dimensions.

[0045] Reference Figure 1 In some embodiments of the present invention, the transmission mechanism 600 includes a knife arm driving crank arm 610, a telescopic adjustment rod assembly 620 and a knife arm connecting arm 630. The knife arm driving crank arm 610 is connected to the knife arm driving shaft 300 and rotates synchronously with the knife arm driving shaft 300. Specifically, the knife arm driving shaft 300 is rotatably installed on the knife arm base 200 along the vertical axis. A connecting flange 310 is provided at the bottom of the knife arm driving shaft 300. The connecting flange 310 is used to connect with the rotation drive mechanism, and the rotation drive mechanism can be a motor. A positioning sleeve 320 is sleeved on the knife arm driving shaft 300, and the positioning sleeve 320 is located between the knife arm driving crank arm 610 and the knife arm base 200 to achieve axial positioning. Of course, it can also be operated by a human drive mechanism. The connecting flange 310 is connected to the operating rod, and a person can control the operating rod to drive the connecting flange 310 and the knife arm driving shaft 300 to rotate. One end of the telescopic adjustment rod assembly 620 is movably connected to the position of the knife arm driving crank arm 610 deviating from the knife arm driving shaft 300, and the other end is hinged to the knife arm connecting arm 630. The knife arm driving crank arm 610 is arranged horizontally, one end is connected and fixed to the knife arm driving shaft 300, and the other end is movably connected to the end of the telescopic adjustment rod assembly 620. The two ends of the telescopic adjustment rod assembly 620 can be adaptively telescopic; the knife arm connecting arm 630 is fixedly connected to the conductive knife arm 500, and the knife arm connecting arm 630 is provided with a sleeve sleeved on the conductive knife arm 500, and the sleeve can be fixedly connected to the conductive knife arm 500 by fasteners or welding. Thus, through the transmission connection of the knife arm driving crank arm 610, the telescopic adjustment rod assembly 620 and the knife arm connecting arm 630, the rotational movement of the knife arm driving shaft 300 is converted into the rotation of the conductive knife arm 500 along the hinge axis of the knife arm moving seat 400 and the rotation of the conductive knife arm 500 along its own axis, thereby realizing the closing action and driving the radial protrusion structure 510 to narrow or open along the width direction of the opening groove 101, so that it can be smoothly inserted into the opening groove 101 and tightened with the side wall of the opening groove 101, thereby reducing the closing and opening resistance while ensuring the contact tightness.

[0046] Reference Figure 3 In a further embodiment of the present invention, a connecting ball 611 is provided at one end of the knife arm driving crank arm 610 away from the knife arm driving shaft 300, and the telescopic adjustment rod assembly 620 is ball-connected to the connecting ball 611 so as to be able to rotate around the center of the connecting ball 611, thereby satisfying the rotation activity requirements of the telescopic adjustment rod assembly 620 in multiple dimensions.

[0047] Reference Figure 2 and Figure 3In a further embodiment of the present invention, the telescopic adjustment rod assembly 620 includes a universal joint connecting rod 621 and a transmission connecting rod 622. The transmission connecting rod 622 is provided with a movable groove 623 extending along its length direction; one end of the transmission connecting rod 622 is hinged to the knife arm connecting arm 630, and the other end is provided with a through hole 624 extending to the movable groove 623; one end of the universal joint connecting rod 621 is ball-connected to the connecting ball 611, and the other end passes through the through hole 624 and extends into the movable groove 623 and can move along the movable groove 6 23 activities; a first compression spring 625 is installed in the movable groove 623, one end of the first compression spring 625 is against the end wall of the movable groove 623 away from the universal joint connecting rod 621, and the other end is against the universal joint connecting rod 621, so that the universal joint connecting rod 621 can be pushed under the drive of the knife arm driving crank arm 610, and the first compression spring 625 is used to push the transmission connecting rod 622 to transmit the force to the conductive knife arm 500 and the knife arm motion seat 400, thereby driving the conductive knife arm 500 to move and achieve closing. The universal joint connecting rod 621 and the transmission connecting rod 622 can be adaptively extended and retracted according to the position of the conductive knife arm 500 and the knife arm driving crank arm 610, so that the length of the telescopic adjustment rod assembly 620 can be adaptively elastically extended and retracted, avoiding structural interference and insufficient freedom, and the first compression spring 625 can realize the transmission of the force and realize the movement of each moving part.

[0048] Reference Figure 2 and Figure 3 In a further embodiment of the present invention, the cross-sectional profile of the through hole 624 is smaller than the movable groove 623, and one end of the universal joint connecting rod 621 extending into the movable groove 623 is connected to the limit head 626, and the limit head 626 and the universal joint connecting rod 621 can be threadedly connected to facilitate installation and disassembly. The limit head 626 has a larger profile than the through hole 624, so that the limit head 626 can only move in the movable groove 623. When it is necessary to switch from closing to opening, the limit head 626 can abut against the end wall of the movable groove 623 where the through hole 624 is set, thereby pulling the conductive knife arm 500 up and separating it from the static contact seat 100.

[0049] Reference Figure 6 In some embodiments of the present invention, the static contact seat 100 includes a base plate 110, and vertical plates 111 are provided on both sides of the base plate 110 in the width direction. Spring sheets 120 are installed on the inner sides of the vertical plates 111. The base plate 110 and the spring sheets 120 on both sides define an open groove 101, and the inner side walls of the two spring sheets 120 are two opposite side walls of the open groove 101. Therefore, when the switch is in the closed state, the radial protrusion structure 510 tightens the spring sheets 120 on both sides, and the spring sheets 120 on both sides elastically deform outward, so that under the action of the elastic force, the radial protrusion structure 510 is in close contact with the spring sheets 120, thereby improving the contact force and making the electrical connection more stable and reliable.

[0050] Reference Figure 6In a further embodiment of the present invention, a partition 121 extending toward the corresponding vertical plate 111 is provided at the upper end of the spring sheet 120, and a mounting portion 122 connected and fixed to the vertical plate 111 is provided at one end of the partition 121 facing away from the spring sheet 120. Specifically, the upper end of the spring sheet 120 on the left is provided with a partition 121 extending toward the vertical plate 111 on the left, and the upper end of the spring sheet 120 on the right is provided with a partition 121 extending toward the vertical plate 111 on the right. The partition 121 allows a certain distance between the spring sheet 120 and the mounting portion 122 and the vertical plate 111, and provides space for elastic deformation. It is understandable that the spring sheet 120 can be made of an elastic metal material that can conduct electricity, such as copper.

[0051] Reference Figure 6 In a further embodiment of the present invention, a second compression spring 130 is sandwiched between the mounting portion 122 and the spring sheet 120, and the mounting portion 122 is provided with a limiting column 123 for the second compression spring 130 to be mounted thereon. The limiting column 123 and the spring sheet 120 have a spacing to provide space for the spring sheet 120 to have elastic deformation. The limiting column 123 is for the second compression spring 130 to be mounted thereon to limit the second compression spring 130 so that it will not fall and become ineffective. The second compression spring 130 can provide an elastic force to the spring sheet 120 so that the spring sheet 120 is in close contact with the radial protrusion structure 510.

[0052] Reference Figure 6In a further embodiment of the present invention, a bonding plate 140 is provided at the center of the upper end surface of the base plate 110, and limiting plates 141 extending vertically upward are provided on both sides of the bonding plate 140 in the width direction. The limiting plates 141 are located on the side of the corresponding spring piece 120 that is away from the mounting portion 122, and are used to limit the elastic deformation of the two spring pieces 120 closing inward, that is, the limiting plate 141 on the left side is located on the right side of the spring piece 120 on the left side, and the limiting plate 141 on the right side is located on the left side of the spring piece 120 on the right side, thereby limiting the range of the inward deformation of the two spring pieces 120, so that the distance between the two spring pieces 120 is maintained greater than the distance between the two limiting plates 141, that is, ensuring that the width of the opening slot 101 is greater than the distance between the two limiting plates 141, to avoid the width of the opening slot 101 from becoming uncontrolled and causing greater resistance to the insertion of the conductive knife arm 500. The bonding plate 140 and the base plate 110 are provided with corresponding holes for connection and fixing by screws, and the screws have screw heads 150 for pressing the bonding plate 140, and the screw heads 150 are in contact with the outer peripheral wall of the conductive knife arm 500 in the pre-closing state and the closing state. Specifically, a support seat 160 is provided at the lower end of the base plate 110, and the support seat 160 is provided with a threaded hole adapted to the screw, and the base plate 110 and the bonding plate 140 are both provided with through holes for the screws to pass through, so that the screws are threadedly connected with the threaded holes, so that the screw heads 150 and the base plate 110 clamp and fix the bonding plate 140. Moreover, the outer peripheral wall of the conductive knife arm 500 in the pre-closing state and the closing state is in contact with the screw head 150, so that in the pre-closing state, when the radial protrusion structure 510 is not in contact with the side wall of the opening groove 101, the conductive knife arm 500 is in contact with the screw head 150 to achieve electrical contact with the static contact seat 100, so that in the process of the radial protrusion structure 510 gradually rotating and opening to contact the side wall of the opening groove 101, no obvious arc will be generated, so that the radial protrusion structure 510 and the side wall of the opening groove 101 are not easily damaged, thereby improving the life of the equipment.

[0053] The following describes the operation process of how the lower conductive blade arm 500 switches from the open state to the closed state. Figure 1 and Figure 2 As shown, the static contact seat 100 and the knife arm base 200 are arranged at intervals along the reference line 102. At this time, they are in the open state, the conductive knife arm 500 is in the vertical state, and the radial protrusion structure 510 is in the open state. At this time, the left and right dimensions of the conductive knife arm 500 at the radial protrusion structure 510 are large, and the projections of the connection positions between the conductive knife arm 500, the knife arm connecting arm 630, the telescopic adjustment rod assembly 620, and the knife arm driving crank arm 610 on the horizontal plane are all on the reference line 102 or the extension line of the reference line 102. Then, the knife arm driving crank arm 610 and the knife arm driving shaft 300 rotate clockwise ( Figure 5 Clockwise direction from the top view) to Figure 4In the state shown, the knife arm motion seat 400 and the conductive knife arm 500 rotate and press toward the static contact seat 100, and then the knife arm driving arm 610 and the knife arm driving shaft 300 continue to rotate clockwise to Figure 5 In the pre-closing state shown in FIG. 1 , the conductive blade arm 500 has been completely inserted into the opening slot 101 and is in contact with the bottom wall of the opening slot 101 and cannot be pressed down any further. Figure 5 It can be seen that the telescopic adjustment rod assembly 620 and the knife arm connecting arm 630 deviate from the reference line 102, driving the conductive knife arm 500 to twist along its own axis, and the size of the radial protrusion structure 510 in the left and right directions is reduced, such as Figure 6 As shown, at this time, the radial protrusion structure 510 forms an angle with the horizontal plane, and the radial protrusion structure 510 is in an inclined state, so that the width of the conductive knife arm 500 at the radial protrusion structure 510 is reduced, reducing its resistance to entering the opening slot 101, and then the knife arm drives the crank arm 610 and the knife arm driving shaft 300 to continue to rotate clockwise, the telescopic adjustment rod assembly 620 and the knife arm connecting arm 630 approach the reference line 102, the length of the telescopic adjustment rod assembly 620 becomes smaller, and the conductive knife arm 500 only rotates along its own axis to keep being stuck in the opening slot 101, and the radial protrusion structure 510 gradually opens, so that the radial protrusion structure 510 gradually tightens the left and right side wall structures of the opening slot 101, and finally reaches Figure 7 In the closed state shown, at this time, the width of the conductive knife arm 500 in the left and right directions at the radial protrusion structure 510 reaches the maximum, the radial protrusion structure 510 is in close contact with the left and right side walls of the opening slot 101, and the projection of the connection position between the conductive knife arm 500, the knife arm connecting arm 630, the telescopic adjustment rod assembly 620, and the knife arm driving crank arm 610 on the horizontal plane returns to the reference line 102 or the extension line of the reference line 102. When the switch needs to be opened, the knife arm driving crank arm 610 and the knife arm driving shaft 300 rotate in the opposite direction (counterclockwise) to complete the switch opening, and when opening the switch, the radial protrusion structure 510 is also rotated first to reduce the width at the radial protrusion structure 510, and then separated from the opening slot 101, which also reduces the resistance of the switch opening.

[0054] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A vertical opening isolating switch, characterized in that: include: A stationary contact seat (100) having an opening slot (101) with an upper opening; Knife arm base (200); A knife arm driving shaft (300) is movably mounted on the knife arm base (200); A knife arm motion seat (400) is hinged to the knife arm base (200); A conductive knife arm (500) is mounted on a knife arm motion seat (400) and can rotate with the knife arm motion seat (400) around a hinge axis until it is inserted into an opening groove (101); a radial protrusion structure (510) that can be inserted into the opening groove (101) is provided on a peripheral wall of the conductive knife arm (500); and the conductive knife arm (500) can rotate relative to the knife arm motion seat (400) along its own axis; The transmission mechanism (600) is used to connect the knife arm driving shaft (300) and the conductive knife arm (500) in a transmission manner, so that the knife arm driving shaft (300) can drive the conductive knife arm (500) to be inserted into the opening groove (101) when it is movable, and can continue to drive the conductive knife arm (500) to rotate along its own axis after the conductive knife arm (500) is inserted into the opening groove (101), so that the radial protrusion structure (510) on the conductive knife arm (500) tightens the two opposite side walls of the opening groove (101).

2. The vertical opening disconnector according to claim 1, characterized in that: The conductive knife arm (500) has an open state, a pre-closed state and a closed state, and the knife arm drive shaft (300) can drive the conductive knife arm (500) to reach the open state, the pre-closed state and the closed state in sequence through a transmission mechanism (600); in the open state, the conductive knife arm (500) is separated from the open slot (101); In the pre-closing state, the conductive blade arm (500) is inserted into the opening slot (101); When in the closed state, the conductive blade arm (500) is inserted into the opening slot (101), and the radial protrusion structure (510) is opened along the width direction of the opening slot (101) to tighten two opposite side walls of the opening slot (101); Furthermore, the overall width of the conductive knife arm (500) at the radial protrusion structure (510) in the pre-closing state is smaller than the overall width of the conductive knife arm (500) at the radial protrusion structure (510) in the closing state; and when the conductive knife arm (500) starts to enter the opening slot (101) and reaches the pre-closing state, the overall width of the conductive knife arm (500) at the radial protrusion structure (510) is smaller than the width of the opening slot (101).

3. The vertical opening disconnector according to claim 1 or 2, characterized in that: The transmission mechanism (600) comprises a knife arm driving crank arm (610), a telescopic adjustment rod assembly (620) and a knife arm connecting arm (630); the knife arm driving crank arm (610) is connected to the knife arm driving shaft (300) and rotates synchronously with the knife arm driving shaft (300); one end of the telescopic adjustment rod assembly (620) is movably connected to the knife arm driving crank arm (610) at a position deviated from the knife arm driving shaft (300), and the other end is hinged to the knife arm connecting arm (630); the two ends of the telescopic adjustment rod assembly (620) can be adaptively telescopic; the knife arm connecting arm (630) is fixedly connected to the conductive knife arm (500).

4. The vertical opening disconnector according to claim 3, characterized in that: A connecting ball (611) is provided at one end of the knife arm driving crank arm (610) away from the knife arm driving shaft (300), and the telescopic adjustment rod assembly (620) is ball-connected to the connecting ball (611) so as to be able to rotate around the center of the connecting ball (611).

5. The vertical opening disconnector according to claim 4, characterized in that: The telescopic adjustment rod assembly (620) comprises a universal joint connecting rod (621) and a transmission connecting rod (622), wherein the transmission connecting rod (622) is provided with a movable groove (623) extending along its length direction; One end of the transmission connecting rod (622) is hinged to the knife arm connecting arm (630), and the other end is provided with a through hole (624) extending to the movable groove (623); One end of the universal joint connecting rod (621) is ball-connected to the connecting ball (611), and the other end passes through the through hole (624) and extends into the movable groove (623) and can move along the movable groove (623); A first compression spring (625) is installed in the movable groove (623), one end of the first compression spring (625) abuts against the end wall of the movable groove (623) away from the universal joint connecting rod (621), and the other end of the first compression spring (625) abuts against the universal joint connecting rod (621).

6. The vertical opening disconnector according to claim 5, characterized in that: The cross-sectional profile of the through hole (624) is smaller than that of the movable groove (623); one end of the universal joint connecting rod (621) extending into the movable groove (623) is connected to a limit head (626); and the profile of the limit head (626) is larger than that of the through hole (624).

7. The vertical opening disconnector according to claim 1, characterized in that: The stationary contact seat (100) comprises a base plate (110), vertical plates (111) are provided on both sides of the base plate (110) in the width direction, spring plates (120) are installed on the inner sides of the vertical plates (111), the base plate (110) and the spring plates (120) on both sides define an open groove (101), and the inner side walls of the two spring plates (120) are two opposite side walls of the open groove (101).

8. The vertical opening disconnector according to claim 7, characterized in that: The upper end of the spring sheet (120) is provided with a partition portion (121) extending toward the vertical plate (111) on the corresponding side, and the end of the partition portion (121) facing away from the spring sheet (120) is provided with a mounting portion (122) connected and fixed to the vertical plate (111).

9. The vertical opening disconnector according to claim 8, characterized in that: A second compression spring (130) is sandwiched between the mounting portion (122) and the spring sheet (120), and the mounting portion (122) is provided with a limiting column (123) for the second compression spring (130) to be sleeved.

10. The vertical opening disconnect switch according to claim 9, characterized in that: A bonding plate (140) is provided at the center of the upper end surface of the base plate (110), and limiting plates (141) extending vertically upward are provided on both sides of the bonding plate (140) in the width direction. The limiting plates (141) are located on the side of the corresponding spring sheet (120) that is away from the mounting portion (122) and are used to limit the elastic deformation of the two spring sheets (120) closing inward. The bonding plate (140) and the base plate (110) are provided with corresponding holes to be connected and fixed by screws. The screws have screw heads (150) for pressing the bonding plate (140), and the screw heads (150) are in contact with the outer peripheral wall of the conductive knife arm (500) in the pre-closing state and the closing state.

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