Three-axis rotation interlocking mechanism for integrated bus coupler change-over switch

Abstract

The invention discloses a three-axis rotation interlocking mechanism for an integrated buscouple change-over switch. The three-axis rotation interlocking mechanism comprises a bottom plate, a rotation system and an interlocking system, the rotating system comprises a first rotating shaft assembly, a third rotating shaft assembly and a second rotating shaft assembly; the interlocking system comprises a spring assembly, a pressing plate assembly, a limiting rod, a supporting plate assembly, a limiting plate assembly and an interlocking plate assembly, after the integrated bus coupler change-over switch is applied to a conventional dual-power-supply structure platform, three switches in an original two-in two-out one-bus coupler power distribution scheme can be integrated into one integrated bus coupler change-over switch, the on-off functions of the two switches can be consistent, mechanical interlocking realizes that three groups of rotating shafts are controlled to rotate, a moving contact is driven to carry out switching-on and switching-off actions, and the switching efficiency is improved. The interlocking effect that three groups of switch moving contacts can simultaneously reach the closing position and can be realized under other working conditions is avoided, so that the product volume is greatly reduced, the scheme cost is reduced, and the structure is simple, stable and reliable.

Description

Technical Field

[0001] The present invention relates to the technical field of power distribution switches, and in particular to a three-axis rotation interlocking mechanism for an integrated busbar transfer switch. Background Art

[0002] Modern power distribution systems generally use dual or multi-way power supply or hybrid power supply to ensure the continuity and reliability of power supply. Common dual or hybrid power distribution systems use switches in two incoming line cabinets and busbar connection cabinets, and the two power supplies can independently carry the load. Adopting the "two-in, two-out and one busbar" distribution scheme, when one of the power supplies fails or needs maintenance, the busbar switch is used to switch the load power supply to another power supply; or, one power supply supplies power to the load, and the other power supply is used as a standby. When the load at the load end increases and the power supply cannot meet the power supply demand, part of the load can be switched to another power supply to ensure the normal power supply at the load end. The "two-in, two-out and one busbar" distribution scheme generally uses three switches, including two incoming line switches and one busbar switch. The three switches are connected by interlocking steel cables. When two of the switches are closed, the third switch cannot be closed because the interlocking steel cable drives the interlocking parts of the third switch, so that the three switches are not closed at the same time in the mechanical structure, and the requirements of the other seven working conditions can be met.

[0003] The current three-switch two-input two-output one bus tie solution has defects such as large overall equipment size, complex structure, and high cost. There is currently no integrated bus tie transfer switch on the market. Summary of the invention

[0004] In order to solve the above problems, the purpose of the present invention is to provide a three-axis rotation interlocking mechanism for an integrated busbar transfer switch, which can significantly reduce the product volume and reduce the solution cost.

[0005] The purpose of the present invention is achieved through the following technical solutions: A three-axis rotation interlocking mechanism for an integrated mother-coupled transfer switch comprises a base plate, a rotation system, and an interlocking system; the rotation system consists of three rotation axis assemblies, a first rotation axis assembly, a third rotation axis assembly, and a second rotation axis assembly, which are sequentially arranged longitudinally above the base plate and can rotate; the three rotation axis assemblies are each composed of a rotation axis which is longitudinally arranged above the base plate and can rotate, and a swing arm which is fixed on the rotation axis and can swing with the rotation axis; the interlocking system comprises a spring assembly, a pressure plate assembly, a limit rod, and a support plate assembly, a limit plate assembly, and an interlocking plate assembly which are sequentially arranged transversely between the base plate and the rotation system; the support plate assembly is fixed on the base plate; the limit plate assembly is slidably mounted on the support plate assembly and can slide transversely back and forth along the support plate assembly, and the limit plate assembly and the third rotation axis assembly are bolted to a preset position on the swing arm of the third rotation axis assembly via a third pin. The waist-shaped hole; the interlocking plate assembly is slidably installed on the limit plate assembly and can slide back and forth laterally along the limit plate assembly; the two ends of the spring assembly are respectively installed on the limit plate assembly and the interlocking plate assembly, and are used to push the interlocking plate assembly to reset after the first rotating shaft assembly or the second rotating shaft assembly returns to the opening position; the limit rod is arranged above the limit plate assembly, and waist-shaped slide grooves are respectively provided at both ends thereof; the pressure plate assembly consists of two and is respectively slidably connected with the waist-shaped slide grooves at both ends of the limit rod, and the two pressure plate assemblies are rotatably installed on the support plate assemblies on both sides through the mounting shaft and are respectively arranged one-to-one under the first rotating shaft assembly and the second rotating shaft assembly; the pressure plate assembly can rotate driven by the corresponding rotating shaft assembly; a torsion spring is coaxially sleeved on the mounting shaft of each pressure plate assembly, and the two torsion arms of the torsion spring are respectively installed on the support plate assembly and the pressure plate assembly.

[0006] Furthermore, a limiting hole is provided in the middle of the top of the limiting plate assembly, and a third limiting protrusion which can be inserted into the limiting hole is provided in the middle of the bottom of the limiting rod.

[0007] Furthermore, when the third rotating shaft assembly is in the opening position, any one of the first rotating shaft assembly and the rotating shaft assembly can realize position rotation without affecting the final interlocking effect; when the third rotating shaft assembly is in the closing position, the interlocking plate assembly moves synchronously driven by the third rotating shaft assembly and its two ends move to the bottom of the two pressure plate assemblies respectively; when one of the first rotating shaft assembly and the second rotating shaft assembly is closed and drives the corresponding pressure plate assembly to rotate, the pressure plate assembly can push the other end of the interlocking plate assembly to move to the bottom of the other pressure plate assembly, limit the rotation of the other pressure plate assembly, and make the rotating shaft assembly corresponding to the pressure plate assembly unable to close; when the first rotating shaft assembly and the second rotating shaft assembly are both in the closing position, the third limiting protrusion is just stuck in the limiting hole, the limiting plate assembly cannot move, and at the same time, the third rotating shaft assembly is also restricted and difficult to rotate, and cannot be closed.

[0008] The present invention proposes a three-axis rotation interlocking mechanism, which is applied to a conventional dual-power supply structure platform. The three switches of the original "two-input, two-output and one bus-tie" power distribution solution can be integrated into an integrated bus-tie conversion switch, which can achieve consistent breaking functions of the two. The mechanical interlocking is achieved by controlling the rotation of three groups of rotating shafts to drive the moving contacts to perform opening and closing actions. The moving contacts of the three groups of switches cannot reach the closing position at the same time, and the interlocking effect can be achieved under other working conditions, thereby greatly reducing the product volume and reducing the solution cost. At the same time, the structure is simple, stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The structure of the present invention is further described in detail below in conjunction with the accompanying drawings.

[0010] Figure 1 The diagram is a schematic structural diagram of the three-axis rotation interlocking mechanism for the integrated bus-coupler transfer switch of the present invention at two different viewing angles.

[0011] Figure 2 The diagram is a tapping diagram of the three-axis rotation interlocking mechanism for the integrated bus-tie transfer switch of the present invention at two different viewing angles.

[0012] Figure 3 It is a schematic diagram of the rotatable angles of the three-axis rotation interlocking mechanism for the integrated bus-tie transfer switch of the present invention.

[0013] Figure 4 It is a structural schematic diagram of the support plate assembly of the present invention.

[0014] Figure 5 It is a schematic structural diagram of the first pressing plate assembly of the present invention.

[0015] Figure 6 It is a schematic structural diagram of the second pressing plate assembly of the present invention.

[0016] Figure 7 It is a schematic structural diagram of the limiting rod of the present invention.

[0017] Figure 8 It is a schematic structural diagram of the interlocking plate assembly of the present invention.

[0018] Fig. 9 It is a schematic structural diagram of the limiting plate assembly of the present invention.

[0019] Fig.10 This is a schematic diagram of the present invention when the first rotating shaft assembly, the second rotating shaft assembly and the third rotating shaft assembly are all in position one.

[0020] Fig.11 This is a schematic diagram of the present invention when the first rotating shaft assembly and the second rotating shaft assembly are in position one, and the third rotating shaft assembly is in position two.

[0021] Fig.12 This is a schematic diagram of the present invention when the second rotating shaft assembly and the third rotating shaft assembly are in position one, and the first rotating shaft assembly is in position two.

[0022] Fig.13 This is a schematic diagram of the present invention when the first rotating shaft assembly and the third rotating shaft assembly are in position one, and the second rotating shaft assembly is in position two.

[0023] Fig.14 This is a schematic diagram of the present invention when the first rotating shaft assembly and the second rotating shaft assembly are in position two, and the third rotating shaft assembly is in position one.

[0024] Fig.15 This is a schematic diagram of the present invention when the first rotating shaft assembly and the third rotating shaft assembly are in position two, and the second rotating shaft assembly is in position one.

[0025] Fig.16 This is a schematic diagram of the present invention when the second rotating shaft assembly and the third rotating shaft assembly are in position two, and the first rotating shaft assembly is in position one.

[0026] As shown in the figure: 1-first rotating shaft assembly, 101-first rotating shaft, 102-first swing arm; 2-second rotating shaft assembly, 201-second rotating shaft, 202-second swing arm; 3-third rotating shaft assembly, 301-third rotating shaft, 302-third swing arm; 4-support plate assembly, 41-first mounting axis, 42-support plate, 42a-first mounting hole, 42b-second mounting hole, 43-second mounting axis, 44-first limiting axis, 45-second limiting axis, 46-allowing gap; 5-limiting plate assembly, 51-third limiting axis, 52-limiting plate, 52a-first waist-shaped slide groove, 52b-second waist-shaped slide groove, 52c-limiting hole, 52d-third mounting hole, 52e-first arc position, 52f-third arc position, 52g-fourth arc position, 52h-second arc position, 53-fourth limiting axis, 54-fifth limiting axis, 55-first avoidance groove, 56-second avoidance groove; 6-interlocking plate assembly, 61-first fixing pin, 62-interlocking plate, 62a-first waist-shaped groove, 62b-second waist-shaped groove, 62c-third waist-shaped groove, 62d-first limiting protrusion, 62e-second arc-shaped pressing surface, 62f-first arc-shaped pressing surface, 62g-second limiting protrusion, 62h-upper giving way groove, 62i-lower giving way groove, 63-second fixing pin; 7-first return spring, 8-first pin, 9-first sleeve; 10-first pressing plate assembly, 10a-first supporting plate, 10a1-first sliding surface, 10b-first limiting pin, 10c-third mounting shaft, 10d-first pressing rod; 11-second pressing plate assembly, 11a-second supporting plate, 11a1-second sliding surface, 11b second limiting pin, 11c-fourth mounting shaft, 11d-second pressing rod; 12-limiting rod, 12a-third limiting protrusion, 12b-fourth waist-shaped groove, 12b1-first end position, 12b2-second end position, 12c-fifth waist-shaped groove, 12c1-third end position, 12c2-fourth end position; 13-third pin shaft, 14-bottom plate, 15-second pin shaft, 16-second bushing, 17-second return spring, 18-first torsion spring, 19-second torsion spring, 20-bracket. DETAILED DESCRIPTION

[0027] The following is an explanation of the implementation of the present invention by specific specific embodiments. People familiar with the technology can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. 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.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. It should be noted that the terms "include", "comprise" or any other variants are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements inherent to such process, method, article or device. Example

[0029] like Figure 1 and Figure 2 As shown, this embodiment provides a three-axis rotation interlocking mechanism for an integrated busbar transfer switch, including a base plate 14, a rotation system, and an interlocking system.

[0030] like Figure 1-Figure 3As shown, the rotation system includes a first rotating shaft assembly 1, a third rotating shaft assembly 3, and a second rotating shaft assembly 2 which are longitudinally arranged above the bottom plate 14 and can rotate in sequence; the first rotating shaft assembly 1, the second rotating shaft assembly 2, and the third rotating shaft assembly 3 are all composed of a rotating shaft and a swing arm, the rotating shaft is longitudinally arranged above the bottom plate 14 (on the switch housing) and can rotate, and the swing arm is fixed on the rotating shaft and can swing with the rotating shaft; wherein, The first rotating shaft assembly 1 is composed of a first rotating shaft 101 which is longitudinally arranged above the bottom plate 14 and can rotate, and a first swing arm 102 which is fixed on the first rotating shaft 101 and can swing with the first rotating shaft 101; when the first rotating shaft assembly 1 rotates alone, the first swing arm 102 can rotate along the axis of the first rotating shaft 101 by θ (i.e., reciprocating between position 1 and position 2, position 1 is the initial position of the first rotating shaft assembly 1, i.e., the opening position, at which time the first swing arm 102 is vertically arranged; position 2 is the final position of the first rotating shaft assembly 1, i.e., the closing position, at which time the first swing arm 102 swings by an angle of θ toward the direction of the third rotating shaft assembly 3). A first pin 8 (parallel to the first rotating shaft 101) is vertically fixed at the lower end of the first swing arm 102, and a first shaft sleeve 9 is sleeved on the first pin 8.

[0031] The second rotating shaft assembly 2 is composed of a second rotating shaft 201 which is longitudinally arranged above the bottom plate 14 and can rotate, and a second swing arm 202 which is fixed on the second rotating shaft 201 and can swing with the second rotating shaft 201; when the second rotating shaft assembly 2 rotates alone, the second swing arm 202 can rotate β along the axis of the first rotating shaft 101 (i.e., reciprocating between position 1 and position 2, position 1 is the initial position of the second rotating shaft assembly 2, i.e., the opening position, at which time the second swing arm 202 is vertically arranged; position 2 is the final position of the second rotating shaft assembly 2, i.e., the closing position, at which time the second swing arm 202 swings β angle toward the direction of the third rotating shaft assembly 3). A second pin 15 (parallel to the second rotating shaft 201) is vertically fixed at the lower end of the second swing arm 202, and a second shaft sleeve 16 is sleeved on the second pin 15.

[0032] The third rotating shaft assembly 3 is composed of a third rotating shaft 301 which is longitudinally arranged above the bottom plate 14 and can rotate, and a third swing arm 302 which is fixed on the third rotating shaft 301 and can swing with the third rotating shaft 301. The lower end of the third swing arm 302 is provided with a waist-shaped hole arranged along its length direction, and a third pin shaft 13 is slidably installed in the waist-shaped hole. The third pin shaft 13 is perpendicular to the third swing arm 302 (parallel to the third rotating shaft 301); when the third rotating shaft assembly 3 rotates alone, the third swing arm 302 can rotate α along the axis of the third rotating shaft 301 (that is, reciprocatingly rotate between position one and position two, position one is the initial position of the third rotating shaft assembly 3, that is, the opening position, at this time, the third swing arm 302 is set in the direction of the first rotating shaft assembly 1; position two is the final position of the rotating shaft assembly 3, that is, the closing position, at this time, the third swing arm 302 swings by an angle α toward the direction of the second rotating shaft assembly 2).

[0033] like Figure 4-9 As shown, the interlocking system includes a spring assembly, a pressure plate assembly, a limiting rod 12, and a supporting plate assembly 4, a limiting plate assembly 5 and an interlocking plate assembly 6 which are sequentially arranged laterally between the bottom plate 14 and the rotating system.

[0034] like Figure 4 As shown, the support plate assembly 4 is fixed on the base plate 14; the support plate assembly 4 includes a support plate 42, a top of the support plate 42 is provided with a clearance gap 46 located below the third rotating shaft assembly 3 and for the swing arm (third swing arm 302) of the third rotating shaft assembly 3 to rotate, a first mounting hole 42a and a second mounting hole 42b are provided on the upper part of the support plate 42 on both sides of the clearance gap 46, a first mounting shaft 41 and a second mounting shaft 43 are provided on the lower part of the support plate 42 on both sides of the clearance gap 46, and a first limiting shaft 44 and a second limiting shaft 45 are provided in the middle part of the support plate 42 on both sides of the clearance gap 46; wherein, the first mounting hole 42a, the second mounting shaft 43 and the first limiting shaft 44 are located on one side of the clearance gap 46 (below the side where the first rotating shaft assembly 1 is located), and the second mounting hole 42b, the first mounting shaft 41 and the second limiting shaft 45 are located on the other side of the clearance gap 46 (below the side where the second rotating shaft assembly 2 is located).

[0035] like Fig. 9As shown, the limit plate assembly 5 is slidably mounted on the support plate 42 of the support plate assembly 4 and can slide back and forth laterally along the support plate 42 of the support plate assembly 4. The limit plate assembly 5 includes a limit plate 52, on which a first waist-shaped slide groove 52a and a second waist-shaped slide groove 52b are respectively arranged laterally corresponding to the first installation axis 41 and the second installation axis 43, wherein the second installation axis 43 is slidably sleeved in the first waist-shaped slide groove 52a and is limited by the end card, and the first installation axis 41 is slidably sleeved in the second waist-shaped slide groove 52b and is limited by the end card; a third limit axis 51, a fourth limit axis 53 and a fifth limit axis 54 are arranged on one side of the limit plate 52 facing away from the support plate assembly 4; a limit plate 52 at the top middle of the limit plate 52 of the limit plate assembly 5 is arranged toward the The first and second arcuate grooves 52e and 52h are formed on the top of the limit plate 52. The first arcuate groove 55 and the second arcuate groove 56 are formed on the top of the limit plate 52 on both sides of the limit plate 52. The first arcuate groove 55 is located below the first rotating shaft assembly 1. Both sides of the first arcuate groove 55 are arcuate concave surfaces, namely the first arcuate position 52e and the second arcuate position 52h. The second arcuate groove 56 is located below the second rotating shaft assembly 2. Both sides of the second arcuate groove 56 are arcuate concave surfaces, namely the third arcuate position 52f and the fourth arcuate position 52g. The first arcuate position 52e and the third arcuate position 52f are arranged near the middle of the limit plate 52. The top and bottom of the limit plate 52 on the side facing away from the support plate assembly 4 are transversely provided with convex strips, and the two convex strips form a guide channel for the interlocking plate assembly 6 to slide back and forth. A third mounting hole 52d is provided in the middle of the limit plate 52 corresponding to the swing arm (third swing arm 302) of the third rotating shaft assembly 3. The third mounting hole 52d is bolted to the waist-shaped hole on the swing arm (third swing arm 302) of the third rotating shaft assembly 3 through a third pin shaft 13. When the third swing arm 302 of the third rotating shaft assembly 3 reciprocates between position one and position two, the limit plate assembly 5 can follow its horizontal (lateral) reciprocating movement, and the interlocking plate assembly 6 also moves horizontally (laterally) reciprocatingly with the limit plate assembly 5.

[0036] like Figure 8As shown, the interlocking plate assembly 6 is slidably mounted on the limiting plate 52 and can slide back and forth laterally along the limiting plate 52 of the limiting plate assembly 5. The interlocking plate assembly 6 includes an interlocking plate 62, and a first arc-shaped pressing surface 62f and a second arc-shaped pressing surface 62e are respectively provided on both sides of the top of the interlocking plate 62. An upper yielding groove 62h is provided between the first arc-shaped pressing surface 62f and the second arc-shaped pressing surface 62e at a position near the first arc-shaped pressing surface 62f at the top of the interlocking plate 62. The middle of the bottom of the interlocking plate 62 is concave to form a lower yielding groove The third limiting axis 51, the fourth limiting axis 53 and the fifth limiting axis 54 corresponding to the limiting plate 52 on the interlocking plate 62 are respectively provided with a first waist-shaped groove 62a, a second waist-shaped groove 62b and a third waist-shaped groove 62c laterally, wherein the third limiting axis 51 is slidably sleeved in the third waist-shaped groove 62c and is limited by the end card, the fourth limiting axis 53 is slidably sleeved in the first waist-shaped groove 62a and is limited by the end card, and the fifth limiting axis 54 is slidably sleeved in the second waist-shaped groove 62b and is limited by the end card. A first limiting protrusion 62d and a second limiting protrusion 62g are provided on the top of the interlocking plate 62. The first limiting protrusion 62d is located between the upper clearance groove 62h and the second arc-shaped pressing surface 62e and is arranged at the top edge of the second arc-shaped pressing surface 62e. The second limiting protrusion 62g is located between the upper clearance groove 62h and the first limiting protrusion 62d and is arranged at the top of the upper clearance groove 62h near the first limiting protrusion 62d. A first fixing pin 61 and a second fixing pin 63 are provided on the side of the interlocking plate 62 facing away from the limiting plate 52. The first fixing pin 61 and the second fixing pin 63 are respectively arranged on both sides of the lower clearance groove 62i. The portion between the first arc-shaped pressing surface 62f and the upper clearance groove 62h is directly opposite to the first avoidance groove 55 of the limiting plate 52.

[0037] like Figure 1 and Figure 2 As shown, the spring assembly includes a first reset spring 7, a second reset spring 17 and a bracket 20, which is used to push the interlocking plate assembly 6 to reset after the first rotating shaft assembly 1 or the second rotating shaft assembly 2 returns to the open position; the bracket 20 is fixed on the limit plate 52 and is located in the lower clearance groove 62i of the interlocking plate 62, and the lower clearance groove 62i can slide back and forth horizontally relative to the bracket 20. The first reset spring 7 and the second reset spring 17 are arranged on both sides of the bracket 20, one end of the first reset spring 7 is sleeved on the first fixing pin 61, and the other end is hooked in the preset hole at one end of the bracket 20, and one end of the second reset spring 17 is sleeved on the second fixing pin 63, and the other end is hooked in the preset hole at the other end of the bracket 20, so that the interlocking plate assembly 6 can move within the size range of each waist groove (the first waist groove 62a, the second waist groove 62b and the third waist groove 62c), and remain in the open position when there is no external force.

[0038] like Figure 7As shown, the limiting rod 12 is arranged above the limiting plate assembly 5, and is in the shape of a long strip as a whole. A third limiting protrusion 12a that can be inserted into the limiting hole 52c is arranged in the middle of the bottom thereof toward the limiting hole 52c. A fourth waist-shaped groove 12b and a fifth waist-shaped groove 12c are arranged at both ends of the limiting rod 12, respectively. The two ends of the fourth waist-shaped groove 12b are respectively the first end 12b1 and the second end 12b2; the two ends of the fifth waist-shaped groove 12C are respectively the third end 12c1 and the fourth end 12c2, wherein the second end 12b2 and the third end 12c1 are arranged near the middle of the limiting rod 12, and the first end 12b1 and the fourth end 12c2 are arranged near the end of the limiting rod 12. When the first rotating shaft assembly 1 and the second rotating shaft assembly 2 are both in the final position (the closing position of position 2), the third limiting protrusion 12a is just inserted into the limiting hole 52c, and the limiting plate assembly 5 cannot move, and the third rotating shaft assembly 3 is also restricted and difficult to rotate.

[0039] like Figure 1-3 The pressure plate assemblies shown are two, including a first pressure plate assembly 10 and a second pressure plate assembly 11. The first pressure plate assembly 10 and the second pressure plate assembly 11 are respectively slidably connected to the waist-shaped slide grooves at both ends of the limit rod 12. The two pressure plate assemblies are rotatably installed on the support plate assemblies 4 on both sides through the installation shaft and are respectively arranged one-to-one under the first rotating shaft assembly 1 and the second rotating shaft assembly 2; the pressure plate assembly can rotate driven by the corresponding rotating shaft assembly; a torsion spring is coaxially sleeved on the installation shaft of each pressure plate assembly, and the two torsion arms of the torsion spring are respectively installed on the support plate assembly 4 and the pressure plate assembly 10.

[0040] like Figure 5As shown, the first pressure plate assembly 10 is located between the second rotating shaft assembly 2 and the third rotating shaft assembly 3 and above the second avoidance groove 56, and the first pressure plate assembly 10 is rotatably mounted on one end of the support plate assembly 4. The first pressure plate assembly 10 includes a first support plate 10a, the first support plate 10a is located between the support plate 42 and the limiting rod 12 and above the second avoidance groove 56; a first limiting pin 10b and a third mounting shaft 10c are vertically fixed on the side of the first support plate 10a facing the support plate 42; the first limiting pin 10b penetrates the first support plate 10a and extends out from the side of the first support plate 10a facing the limiting rod 12, and the end of the first limiting pin 10b facing the limiting rod 12 is slidably arranged in the fifth waist groove 12C of the limiting rod 12; the third mounting shaft 10c is rotatably mounted in the second mounting hole 42b of the support plate assembly 4 (support plate 42) and is limited by an end clamp; one end of the first support plate 10a extends toward the second rotating shaft assembly 2 to the top of the second sleeve 16 and forms a first sliding surface 10a1 tangent to the second sleeve 16 at its bottom; the other end of the first support plate 10a extends toward the second avoidance groove and a first pressure rod 10d is vertically fixed on the side of the end facing the support plate 42, and the first pressure rod 10d can be rotated into the second avoidance groove under the drive of the second rotating shaft assembly 2. A first torsion spring 18 is coaxially sleeved on the third mounting shaft 10c, one of the torsion arms of the first torsion spring 18 is placed below the end of the first limiting pin 10b facing the support plate 42, and the other torsion arm of the first torsion spring 18 is placed at the lower end of the second limiting shaft 45 on the support plate assembly 4, so that the first pressure plate assembly 10 can ensure that the first sliding surface 10a1 is always tangent to the second sleeve 16 installed on the second pin 15.

[0041] like Figure 6As shown, the second pressure plate assembly 11 is located between the first rotating shaft assembly 1 and the third rotating shaft assembly 3 and above the first avoidance groove, and the second pressure plate assembly 11 is rotatably mounted on the other end of the support plate assembly 4. The second pressure plate assembly 11 includes a second support plate 11a, which is located between the support plate 42 and the limiting rod 12 and above the first avoidance groove; a second limiting pin 11b and a fourth mounting shaft 11c are vertically fixed on the side of the second support plate 11a facing the support plate 42; the second limiting pin 11b penetrates the second support plate 11a and extends out from the side of the second support plate 11a facing the limiting rod 12, and the second limiting pin 11b is slidably arranged in the fourth waist groove 12b of the limiting rod 12 facing one end of the limiting rod 12; the fourth mounting shaft 11c is rotatably mounted in the first mounting hole 42a of the support plate assembly 4 (support plate 42) and is limited by the end clamp; one end of the second support plate 11a extends toward the first rotating shaft assembly 1 to the top of the first sleeve 9 and forms a second sliding surface 11a1 tangent to the first sleeve 9 at its bottom; the other end of the second support plate 11a extends toward the first avoidance groove and a second pressure rod 11d is vertically fixed on the side of the end facing the support plate 42, and the second pressure rod 11d can be rotated into the first avoidance groove under the drive of the first rotating shaft assembly 1. A second torsion spring 19 is coaxially sleeved on the fourth mounting shaft 11c, one of the torsion arms of the second torsion spring 19 is placed below the end of the second limit pin 11b facing the support plate 42, and the other torsion arm of the second torsion spring 19 is placed at the lower end of the first limit shaft 44 on the support plate assembly 4, so that the second pressure plate assembly 11 can ensure that the second sliding surface 11a1 is always tangent to the first sleeve 9 installed on the first pin 8.

[0042] When the third rotating shaft assembly 3 is located at the opening position, any one of the first rotating shaft assembly 1 and the rotating shaft assembly 2 can achieve position rotation without affecting the final interlocking effect.

[0043] When the third rotating shaft assembly 3 is in the closing position, the interlocking plate assembly 6 moves synchronously driven by the third rotating shaft assembly 3 and its two ends move to the bottom of the two pressure plate assemblies respectively; when one of the first rotating shaft assembly 1 and the second rotating shaft assembly 2 is closed and drives the corresponding pressure plate assembly to rotate, the pressure plate assembly can push the other end of the interlocking plate assembly 6 to move to the bottom of the other pressure plate assembly, restricting the rotation of the other pressure plate assembly, so that the rotating shaft assembly corresponding to the pressure plate assembly cannot be closed.

[0044] When the first rotating shaft assembly 1 and the second rotating shaft assembly 2 are both in the closing position, the third limiting protrusion 12a is just stuck in the limiting hole 52c, the limiting plate assembly 5 cannot move, and the third rotating shaft assembly 3 is also restricted and difficult to rotate, and cannot be closed. That is, after the first rotating shaft assembly 1 and the second rotating shaft assembly 2 move from position one to position two, the third rotating shaft assembly 3 is restricted by the structure and cannot perform the interlocking function from position one to position two. Working principle:

[0045] The principle of applying the three-axis rotation interlocking mechanism described in this embodiment to the main coupling integrated transfer switch to realize seven working conditions is as follows.

[0046] like Fig.10 As shown, the first rotating shaft assembly 1, the second rotating shaft assembly 2 and the third rotating shaft assembly 3 are all in position one (the first limit pin 10b is located at the third end position 12c1, and the second limit pin is located at the first end position 12b1 of 11b), that is, the open position of the I power rotating shaft, II power rotating shaft and the main coupling rotating shaft of the main coupling integrated transfer switch (that is, the "three-part" state of I open, II open and main coupling open).

[0047] like Fig.11 As shown, when the third rotating shaft assembly 3 rotates by an angle β from position one to position two, the third rotating shaft assembly 3 drives the limiting plate assembly 5 to follow the movement through the third pin shaft 13, and the third rotating shaft assembly 3 reaches position two (the first limiting pin 10b is located at the third end position 12c1, and the second limiting pin is located at the first end position 12b1 of 11b), that is, the main coupling shaft in the main coupling integrated transfer switch is closed, and the I power supply shaft and the II power supply shaft are not moving and are in the open position (that is, I open, II open, and main coupling).

[0048] like Fig.12 As shown, when the first rotating shaft assembly 1 rotates by angle θ from position one to position two, the first rotating shaft assembly 1 pushes the second pressure plate assembly 11 to rotate along through the first shaft sleeve 9, and the second pressure rod 11d on the second pressure plate assembly 11 enters the first arc position 52e of the first avoidance groove of the limiting plate assembly 5, and the first rotating shaft assembly 1 reaches position two (the first limiting pin 10b is located at the fourth end position 12c2, and the second limiting pin is located at the first end position 12b1 of 11b), that is, the I power supply in the mother-coupled integrated conversion switch is closed, and the mother-coupled rotating shaft and the II power supply rotating shaft are not moving and are in the open position (that is, I is closed, II is open, and the mother-coupled is open).

[0049] like Fig.13 As shown, when the second rotating shaft assembly 2 rotates by an angle α from position one to position two, the second rotating shaft assembly 2 pushes the first pressure plate assembly 10 to follow the rotation through the second shaft sleeve 16, and the first pressure rod 10d on the first pressure plate assembly 10 enters the fourth arc position 52g of the second avoidance groove of the limiting plate assembly 5, and the second shaft assembly 2 reaches position two (the first limiting pin 10b is located at the fourth end position 12c2, and the second limiting pin is located at the first end position 12b1 of 11b), that is, the II power supply in the main coupling integrated conversion switch is closed, and the main coupling shaft and the I power supply shaft are not moving and are in the open position (that is, I open, II closed, and the main coupling is open).

[0050] like Fig.14As shown, when the first rotating shaft assembly 1 rotates by an angle θ and the second rotating shaft assembly 2 rotates by an angle α, during the process of the two rotating shaft assemblies moving from position one to position two, the second rotating shaft assembly 2 pushes the first pressure plate assembly 10 to rotate along through the second shaft sleeve 16, and the first pressure rod 10d on the first pressure plate assembly 10 enters the fourth arc position 52g of the second avoidance groove of the limiting plate assembly 5, and the second rotating shaft assembly 2 reaches position two, and the first rotating shaft assembly 1 pushes the second pressure plate assembly 11 to rotate along through the first shaft sleeve 9, and the second pressure rod 11d on the second pressure plate assembly 11 enters the first arc position 52e of the first avoidance groove of the limiting plate assembly 5, and the first rotating shaft assembly 1 reaches position two (the first limiting pin 10b is located at the fourth end position 12c2, and the second limiting pin is located at 11b The second end position 12b2) is formed when the third limiting protrusion 12a on the limiting rod 12 connected to the first pressure plate assembly 10 and the second pressure plate assembly 11 is just embedded in the limiting hole 52c of the limiting plate assembly 5, resulting in the third rotating shaft assembly 3 connected to the limiting plate assembly 5 being unable to rotate, so as to realize the interlocking function of the third rotating shaft assembly 3 from position one to position two after the first rotating shaft assembly 1 and the second rotating shaft assembly 2 are moved from position one to position two due to structural limitations, that is, the I and II power supplies in the mother-coupled integrated conversion switch are closed, and the mother-coupled rotating shaft cannot rotate and is in the open position (that is, I and II are closed, and the mother-coupled is open), forming an interlocking state in which the "three-way closing (that is, I power supply, II power supply, and mother-coupled switch are all in the closed state)" cannot be performed.

[0051] like Fig.15As shown, when the first rotating shaft assembly 1 rotates by an angle θ and the third rotating shaft assembly 3 rotates by an angle β, during the process of the two rotating shaft assemblies moving from position one to position two, the third rotating shaft assembly 3 drives the limiting plate assembly 5 to follow the movement (horizontally move toward the direction of the second rotating shaft assembly 2) through the third pin shaft 13. After the third rotating shaft assembly 3 reaches position two (the first limiting pin 10b is located at the fourth end position 12c2, and the second limiting pin is located at the first end position 12b1 of 11b), the second arc position 52h of the limiting plate assembly 5 and the first arc pressure surface 62f of the interlocking plate assembly 6 are just located on both sides of the second pressure rod 11d on the second pressure plate assembly 11. At the same time, the third arc position 52f of the limiting plate assembly 5 and the second arc pressure surface 62e of the interlocking plate assembly 6 move to the bottom of the first pressure rod 10d on the first pressure plate assembly 10, and the first rotating shaft assembly 1 pushes the second pressure plate assembly 11 to rotate with it through the first shaft sleeve 9, and the second pressure rod 11d on the second pressure plate assembly 11 enters the second arc position 52h of the first avoidance groove of the limiting plate assembly 5 (between the second arc position 52h and the first arc pressure surface 62f), and the second pressure rod 11d contacts the first arc pressure surface 62f on the interlocking plate assembly 6 at the same time, pushing the interlocking plate assembly 6 to move to the other side (towards the third arc position 52h). The first limit protrusion 62d of the interlocking plate assembly 6 moves to the third arc position 52f position in the second avoidance groove (protruding from the third arc position 52f on the limit plate assembly 5), blocking the first pressure rod 10d of the first pressure plate assembly 10 (turning downward into the channel in the second avoidance groove). After the first rotating shaft assembly 1 reaches position 2, the first limit protrusion 62d moves to the third arc position 52f position to block the first pressure rod 10d from turning into the channel in the second avoidance groove, causing the first pressure rod 10d on the first pressure plate assembly 10 connected to the second rotating shaft assembly 2 to be connected to the first pressure plate assembly 10 due to the first limit protrusion 62d moving to the third arc position 52f position. The limiting protrusion 62d interferes and cannot enter the third arc position 52f in the second avoidance groove, and the second shaft assembly 2 cannot reach position two. After the first shaft assembly 1 and the third shaft assembly 3 move from position one to position two, the second shaft assembly 2 is limited by the structure and cannot perform the interlocking function from position one to position two, that is, the I power supply and the main coupling switch in the main coupling integrated conversion switch are closed, and the II power supply switch shaft cannot rotate to the open position (that is, I power supply and main coupling are combined, and II power supply is open), resulting in an interlocking state that cannot be "three-in-one (that is, I power supply, II power supply, and main coupling switch are all in the closed state)".

[0052] like Fig.16As shown, when the second rotating shaft assembly 2 rotates at an angle α and the third rotating shaft assembly 3 rotates at an angle β, during the process of the two rotating shaft assemblies moving from position one to position two, the third rotating shaft assembly 3 drives the limiting plate assembly 5 to follow the movement (horizontally move toward the direction of the second rotating shaft assembly 2) through the third pin shaft 13. After the third rotating shaft assembly 3 reaches position two (the first limiting pin 10b is located at the fourth end position 12c2, and the second limiting pin is located at the first end position 12b1 of 11b), the second arc position 52h of the limiting plate assembly 5 and the first arc pressure surface 62f of the interlocking plate assembly 6 are just located at the second pressure rod on the second pressure plate assembly 11 11d, and at the same time, the third arc position 52f of the limit plate assembly 5 and the second arc pressure surface 62e of the interlocking plate assembly 6 move to the bottom of the first pressure rod 10d on the first pressure plate assembly 10; the second rotating shaft assembly 2 pushes the first pressure plate assembly 10 to follow the rotation through the second shaft sleeve 16, and the first pressure rod 10d on the first pressure plate assembly 10 enters the third arc position 52f of the second avoidance groove of the limit plate assembly 5 through rotation, and the first pressure rod 10d contacts the second arc pressure surface 62e on the interlocking plate assembly 6 at the same time, pushing the interlocking plate assembly 6 to move to the other side (towards the direction of the first rotating shaft assembly 1 Horizontally move), so that the second limiting protrusion 62g of the interlocking plate assembly 6 moves to the first avoidance groove close to the second arc position 52h position (protruding from the second arc position 52h on the limiting plate assembly 5), blocking the second pressing rod 11d of the second pressing plate assembly 11 (turning downward into the channel in the first avoidance groove), after the second rotating shaft assembly 2 reaches position 2, the second limiting protrusion 62g moves to the second arc position 52h position to block the second pressing rod 11d from turning into the channel in the first avoidance groove, causing the second pressing rod 11d on the second pressing plate assembly 11 connected to the first rotating shaft assembly 1 to be connected to the second pressing plate assembly 11 due to the second pressing rod 11d being connected to the second pressing plate assembly 11. The limiting protrusion 62g interferes and cannot enter the second arc position 52h. The first rotating shaft assembly 1 cannot reach position two. After the second rotating shaft assembly 2 and the third rotating shaft assembly 3 move from position one to position two, the first rotating shaft assembly 1 is limited by the structure and cannot perform the interlocking function from position one to position two, that is, the II power supply and the main coupling switch in the main coupling integrated conversion switch are closed, and the I power supply switch shaft cannot rotate to the open position (that is, II power supply and main coupling are combined, and I power supply is open), resulting in an interlocking state that cannot be "three-in-one (that is, I power supply, II power supply, and main coupling switch are all in the closed state)".

[0053] Other aspects of the present invention that are not described in detail are all conventional techniques known to those skilled in the art.

[0054] It should be noted that the terms "comprises", "includes" or any other variations are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0055] The protection scope of the present invention is not limited to the technical solutions disclosed in the specific implementation methods. Any modifications, equivalent replacements, improvements, etc. made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A three-axis rotation interlocking mechanism for an integrated busbar transfer switch, comprising a base plate (14), a rotation system, and an interlocking system; characterized in that: The rotating system comprises a first rotating shaft assembly (1), a third rotating shaft assembly (3) and a second rotating shaft assembly (2) which are longitudinally arranged in sequence above the bottom plate (14) and are capable of rotating; The interlocking system comprises a spring assembly, a pressure plate assembly, a limiting rod (12), and a supporting plate assembly (4), a limiting plate assembly (5) and an interlocking plate assembly (6) which are sequentially arranged transversely between a bottom plate (14) and a rotating system; The support plate assembly (4) is fixed on the bottom plate (14); The limit plate assembly (5) is slidably mounted on the support plate assembly (4), and the limit plate assembly (5) and the third rotating shaft assembly (3) are bolted to a waist-shaped hole preset on the swing arm of the third rotating shaft assembly (3) via a third pin shaft (13); The interlocking plate assembly (6) is slidably mounted on the limiting plate assembly (5); The two ends of the spring assembly are respectively mounted on the limit plate assembly (5) and the interlocking plate assembly (6), and are used to push the interlocking plate assembly (6) to reset after the first rotating shaft assembly (1) or the second rotating shaft assembly (2) returns to the open position; The limiting rod (12) is arranged above the limiting plate assembly (5), and waist-shaped sliding grooves are respectively provided at both ends thereof; The pressure plate assemblies are composed of two and are respectively slidably connected to the waist-shaped sliding grooves at both ends of the limit rod (12); the two pressure plate assemblies are rotatably installed on the support plate assemblies (4) on both sides through the installation shaft and are respectively arranged one-to-one below the first rotating shaft assembly (1) and the second rotating shaft assembly (2); the pressure plate assembly can rotate under the drive of the corresponding rotating shaft assembly; a torsion spring is coaxially sleeved on the installation shaft of each pressure plate assembly, and the two torsion arms of the torsion spring are respectively installed on the support plate assembly (4) and the pressure plate assembly (10).

2. The three-axis rotation interlocking mechanism for an integrated bus-coupled transfer switch according to claim 1 is characterized in that: A limiting hole (52c) is provided in the middle of the top of the limiting plate assembly (5), and a third limiting protrusion (12a) capable of being inserted into the limiting hole (52c) is provided in the middle of the bottom of the limiting rod (12).

3. The three-axis rotation interlocking mechanism for an integrated bus-coupled transfer switch according to claim 2 is characterized in that: When the third rotating shaft assembly (3) is in the off position, any one of the first rotating shaft assembly (1) and the rotating shaft assembly (2) can achieve position rotation without affecting the final interlocking effect; When the third rotating shaft assembly (3) is in the closing position, the interlocking plate assembly (6) moves synchronously under the drive of the third rotating shaft assembly (3) and its two ends move respectively to the bottom of the corresponding pressure plate assembly; when one of the first rotating shaft assembly (1) and the second rotating shaft assembly (2) is closed to drive the corresponding pressure plate assembly to rotate, the pressure plate assembly can push the other end of the interlocking plate assembly (6) to move to the bottom of the other pressure plate assembly, thereby limiting the rotation of the other pressure plate assembly, so that the rotating shaft assembly corresponding to the pressure plate assembly cannot be closed; When the first rotating shaft assembly (1) and the second rotating shaft assembly (2) are both in the closing position, the third limiting protrusion (12a) is just inserted into the limiting hole (52c), the limiting plate assembly (5) cannot move, and the third rotating shaft assembly (3) is also restricted and difficult to rotate, and cannot be closed.

4. The three-axis rotation interlocking mechanism for an integrated bus-coupled transfer switch according to claim 1 is characterized in that: The support plate assembly (4) comprises a support plate (42), a clearance notch (46) located below the third rotating shaft assembly (3) and for the swing arm of the third rotating shaft assembly (3) to rotate is provided at the top of the support plate (42), a first mounting hole (42a) and a second mounting hole (42b) are provided at the upper part of the support plate (42) on both sides of the clearance notch (46), a first mounting shaft (41) and a second mounting shaft (43) are provided at the lower part of the support plate (42) on both sides of the clearance notch (46), and a first limiting shaft (44) and a second limiting shaft (45) are provided at the middle part of the support plate (42) on both sides of the clearance notch (46).

5. The three-axis rotation interlocking mechanism for an integrated bus-coupled transfer switch according to claim 4 is characterized in that: The limit plate assembly (5) is slidably mounted on the support plate (42) and can slide back and forth laterally along the support plate (42). The limit plate assembly (5) comprises a limit plate (52), on which a first waist-shaped slide groove (52a) and a second waist-shaped slide groove (52b) are laterally arranged corresponding to the first installation axis (41) and the second installation axis (43), respectively; and a third limit axis (51), a fourth limit axis (53) and a fifth limit axis (54) are arranged on a side surface of the limit plate (52) facing away from the support plate assembly (4).

6. The three-axis rotation interlocking mechanism for an integrated bus-coupled transfer switch according to claim 5, characterized in that: The top and bottom of the limiting plate (52) on the side facing away from the supporting plate assembly (4) are both provided with convex strips in the transverse direction, and a guide channel for the interlocking plate assembly (6) to slide back and forth is formed between the two convex strips.

7. The three-axis rotation interlocking mechanism for an integrated bus-coupled transfer switch according to claim 5, characterized in that: A clearance groove is provided on both sides of the top of the limiting plate (52), respectively. The clearance groove comprises a first clearance groove (55) and a second clearance groove (56). The first clearance groove (55) is located below the first rotating shaft assembly (1), and the second clearance groove (56) is located below the second rotating shaft assembly (2).

8. The three-axis rotation interlocking mechanism for an integrated bus-coupled transfer switch according to claim 7, characterized in that: The interlocking plate assembly (6) is slidably mounted on the limiting plate (52) and can slide back and forth laterally along the limiting plate (52). The interlocking plate assembly (6) comprises an interlocking plate (62). A first arc-shaped pressing surface (62f) and a second arc-shaped pressing surface (62e) are respectively provided on both sides of the top of the interlocking plate (62). An upper clearance groove (62h) located between the first arc-shaped pressing surface (62f) and the second arc-shaped pressing surface (62e) is provided at a position near the first arc-shaped pressing surface (62f) at the top of the interlocking plate (62). A lower clearance groove (62i) is formed by a concave shape in the middle of the bottom of the interlocking plate (62). A first waist-shaped groove (62a), a second waist-shaped groove (62b) and a third waist-shaped groove (62c) are respectively provided one by one on the interlocking plate (62) and are arranged outside the third limiting axis (51), the fourth limiting axis (53) and the fifth limiting axis (54). A first limiting protrusion (62d) and a second limiting protrusion (62g) are provided on the top of the interlocking plate (62); the first limiting protrusion (62d) is located between the upper giving way groove (62h) and the second arc-shaped pressing surface (62e) and is arranged at the top edge of the second arc-shaped pressing surface (62e); the second limiting protrusion (62g) is located between the upper giving way groove (62h) and the first limiting protrusion (62d) and is arranged at the top of the upper giving way groove (62h) close to the first limiting protrusion (62d); a first fixing pin (61) and a second fixing pin (63) are provided on the side of the interlocking plate (62) facing away from the limiting plate (52); the first fixing pin (61) and the second fixing pin (63) are respectively arranged on both sides of the lower giving way groove (62i); the portion between the first arc-shaped pressing surface (62f) and the upper giving way groove (62h) is directly opposite to the first avoiding groove (55) of the limiting plate (52).

9. The three-axis rotation interlocking mechanism for an integrated bus-coupled transfer switch according to claim 8, characterized in that: The spring assembly comprises a first return spring (7), a second return spring (17) and a bracket (20); the bracket (20) is fixed on the limit plate (52) and is located in a lower clearance groove (62i) of the interlocking plate (62), and the lower clearance groove (62i) can slide back and forth laterally relative to the bracket (20); the first return spring (7) and the second return spring (17) are arranged on both sides of the bracket (20), one end of the first return spring (7) is sleeved on the first fixing pin (61), and the other end is hooked in a hole preset at one end of the bracket (20); one end of the second return spring (17) is sleeved on the second fixing pin (63), and the other end is hooked in a hole preset at the other end of the bracket (20).

10. The three-axis rotation interlocking mechanism for an integrated bus-coupled transfer switch according to claim 7, characterized in that: The first pressure plate assembly (10) is rotatably mounted on one end of the support plate assembly (4) via a third mounting shaft 10c, one end of the first pressure plate assembly (10) is in contact with the lower end of the swing arm of the second rotating shaft assembly (2), and the other end corresponds to the position of the second air avoidance groove (56) and can be rotated into the second air avoidance groove (56) under the drive of the second rotating shaft assembly (2), and at the same time, the first pressure plate assembly (10) is also slidably connected to one of the waist-shaped sliding grooves of the limiting rod (12); a first torsion spring (18) is coaxially sleeved on the third mounting shaft (10c), and two torsion arms of the first torsion spring (18) are respectively mounted on the support plate assembly (4) and the first pressure plate assembly (10); The second pressure plate assembly (11) is rotatably mounted on the other end of the support plate assembly (4) via a fourth mounting shaft (11c); one end of the second pressure plate assembly (11) is in contact with the lower end of the swing arm of the first rotating shaft assembly (1), and the other end corresponds to the position of the first avoidance groove (55) and can be rotated into the first avoidance groove (55) under the drive of the first rotating shaft assembly (1), and at the same time, the second pressure plate assembly (11) is also slidably connected to another waist-shaped sliding groove of the limiting rod (12); a second torsion spring (19) is coaxially sleeved on the fourth mounting shaft (11c), and two torsion arms of the second torsion spring (19) are respectively mounted on the support plate assembly (4) and the second pressure plate assembly (11).

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