Contactor mechanical emergency start-up system

Abstract

The present invention discloses a mechanical emergency starting system for a contactor, which includes a main contactor and a corner contactor. The emergency starting device includes a mounting seat, a transmission member A rotatably mounted on the mounting seat, two transmission members B respectively connected to the actuating shafts of the main and corner contactors, a cable, and a pulling mechanism connected to one end of the cable. Driving portions corresponding to the transmission member B are provided on both opposite sides of the transmission member A. One of the driving portion and the transmission member B is provided with an arc-shaped slot hole, and the other is provided with an arc-shaped block. The difference in the central angles corresponding to the arc-shaped slot hole and the arc-shaped block is greater than the rotation angle of the actuating shaft. The other end of the cable is connected to the transmission member A. When the pulling mechanism tightens the cable, it can drive the transmission member A to rotate forward, and then drive the transmission member B to rotate to emergently start the main and corner contactors. When the pulling mechanism releases the cable, the transmission member A can be reset and the transmission member B will not be driven to rotate. This system has a mechanical emergency starting function and does not interfere with the normal electrical starting, ensuring the safe and reliable operation of electrical equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of electric switch systems, and in particular to a mechanical emergency start system for a contactor. Background Art

[0002] In the field of fire self - rescue equipment, when a fire breaks out, accidents where the start - up circuit of a fire pump fails often occur. Once the fire protection system cannot supply water to fire protection facilities such as fire hydrants or sprinklers normally, the consequences will be unthinkable. Therefore, in order to ensure the safety and reliability of the fire protection system, an emergency start device needs to be configured to forcibly start the contactor so that it can be normally closed in certain emergency situations.

[0003] In the existing field, a mechanical handle and a transmission lever combination, or a crank and a connecting rod combination, etc. are conventionally used to drive the moving contact to move, so as to realize the connection or disconnection of the moving contact and the static contact. However, the above - mentioned implementation methods not only have a relatively complex structure, but also are prone to problems such as incomplete connection and even interference with the normal operation of the contactor.

[0004] In view of this, the present invention is specifically proposed. Summary of the Invention

[0005] In order to overcome the above - mentioned defects, the present invention provides a mechanical emergency start system for a contactor, which has a mechanical forced start function, and can realize that the mechanical emergency start and the normal electrical start do not interfere with each other and operate independently, effectively improving the safety and reliability of electrical equipment during operation.

[0006] The technical solution adopted by the present invention to solve its technical problems is: a mechanical emergency start system for a contactor, comprising:

[0007] A main contactor and a corner contactor;

[0008] Emergency starting device, which includes a transmission mechanism and a control mechanism; the transmission mechanism is provided with a mounting seat, a transmission member A elastically and rotatably mounted on the mounting seat, and two transmission members B respectively fixedly connected to the actuating shafts of the main contactor and the angle contactor. Driving parts are respectively arranged on the opposite sides of the transmission member A, and the two driving parts correspond to the two transmission members B one by one. An arc-shaped slot is arranged on one of the corresponding driving part and the transmission member B, and an arc-shaped block is arranged on the other. The arc-shaped block is movably arranged in the arc-shaped slot, and the difference between the central angle corresponding to the arc-shaped slot and the central angle corresponding to the arc-shaped block is greater than the angle by which the actuating shafts of the main contactor and the angle contactor rotate when they are normally engaged; the control mechanism is provided with a cable and a pulling mechanism connected to one end of the cable. The other end of the cable is connected to the transmission member A after being wound around the mounting seat; when the pulling mechanism tightens the cable, it can drive the transmission member A to rotate forward, and at this time the two driving parts can drive the two transmission members B to rotate forward to emergently start the main contactor and the angle contactor; when the pulling mechanism releases the cable, the transmission member A can rotate reversely and reset, and will not drive the transmission member B to rotate.

[0009] As a further improvement of the present invention, after the pulling mechanism releases the cable, the arc-shaped block is located in the middle of the arc-shaped slot, and the difference between the central angle corresponding to the arc-shaped slot and the central angle corresponding to the arc-shaped block is at least twice the angle by which the actuating shafts of the main contactor and the angle contactor rotate when they are normally engaged.

[0010] As a further improvement of the present invention, the arc-shaped slot is arranged on the driving part, and the arc-shaped block is arranged on the transmission member B.

[0011] As a further improvement of the present invention, the transmission member A is further provided with a main body part composed of two parallel substrates and two connecting parts fixedly connected between the two substrates. The main body part is sleeved on the mounting seat and is rotationally connected to the mounting seat through a rotating shaft, and a spring is connected between one of the connecting parts and the mounting seat to provide an elastic reset force for the transmission member A;

[0012] In addition, in the transmission member A, the driving parts are respectively arranged on the opposite sides of the two substrates, and one of the connecting parts is fixedly connected to the other end of the cable.

[0013] As a further improvement of the present invention, the driving part is further provided with a receiving groove recessed on one side of the substrate. Two symmetrical arc-shaped slots and a pin hole for tightly fitting and passing through the rotating shaft are arranged on the bottom of the receiving groove;

[0014] The transmission part B is further provided with a connecting piece for fixedly connecting with the execution shaft. One end of the connecting piece facing away from the execution shaft matches the shape of the receiving groove and can be movably inserted into the receiving groove. Two symmetrical arc-shaped blocks are convexly provided on one end of the connecting piece facing away from the execution shaft.

[0015] In addition, an avoidance hole for avoiding the rotating shaft is further provided on one end of the connecting piece facing away from the execution shaft.

[0016] As a further improvement of the present invention, the mounting seat is provided with a base for mounting on a support, a wire groove provided on the base for winding the cable, and a receiving part fixedly connected to the base for receiving the rotating shaft and the transmission part A.

[0017] In addition, a support is sleeved outside the receiving part, and a travel switch for sensing the position information of the transmission part A is fixedly provided on the support.

[0018] As a further improvement of the present invention, the pulling mechanism includes a sleeve, a first sleeve, a second sleeve, a pull rod, a handle and a limiting component. The sleeve, the first sleeve and the second sleeve are sequentially coaxially connected and communicated, and an inverted L-shaped track groove formed by connecting a slot hole section A and a slot hole section B is provided on the second sleeve. One end of the pull rod is movably inserted into the first sleeve and fixedly connected with one end of the cable passing out of the sleeve. The other end of the pull rod extends out of the second sleeve and is fixedly connected with the handle. The limiting component is provided with a limiting screw movably passing through the inverted L-shaped track groove and fixedly connected with the pull rod, and a spring member sleeved between the second sleeve and the pull rod and capable of providing an elastic reset force to the pull rod. When the handle moves away from the second sleeve under an external force, the pull rod can tighten the cable until the limiting screw moves into the slot hole section B and the handle is limited and stopped. When the limiting screw is moved into the slot hole section A and the handle moves towards the second sleeve under an external force, the pull rod can release the cable.

[0019] As a further improvement of the present invention, it further includes a star contactor and an interlocking mechanism. The interlocking mechanism is connected between the angle contactor and the star contactor, and the interlocking mechanism can make one of the angle contactor and the star contactor in an attracted state while the other remains in a disconnected state.

[0020] As a further improvement of the present invention, the interlocking mechanism includes a mounting plate fixedly installed on the outer shell of the star contactor and two actuators oppositely and rotatably installed on the side of the mounting plate facing away from the star contactor. The two actuators can independently rotate under the drive of the angle contactor and the star contactor respectively, and when one of the two actuators rotates, one ends of the two actuators abut against each other for limiting, forming an interlocking relationship.

[0021] As a further improvement of the present invention, the two actuators are respectively defined as a first actuator and a second actuator;

[0022] The first actuator is fixedly connected to the actuator shaft of the angle contactor;

[0023] The interlocking mechanism further includes a linkage member. The linkage member is provided with an adapter fixedly connected to the second actuator, an adapter ring positioned outside the adapter, and a moving part arranged on the mounting plate and capable of elastically moving in the up-and-down direction under the drive of the actuator end of the star contactor, and the moving part is fixedly connected to the adapter ring, that is: the elastic movement of the moving part can drive the adapter ring, the adapter and the second actuator to rotate together.

[0024] The beneficial effects of the present invention are as follows: ① The contactor mechanical emergency start system of the present invention has a mechanical forced start function, which can effectively solve the problem that the contactor cannot be attracted and connected due to a failure, thereby effectively improving the safety and reliability of the electrical equipment during operation. ② The contactor mechanical emergency start system of the present invention can realize that the mechanical emergency (forced) start and the normal electrical start do not interfere with each other and operate independently, further ensuring and improving the working safety and reliability of the entire electrical system. ③ By means of the cable in the control mechanism, the control end of the pulling mechanism can be designed outside the cabinet and away from the contactor, thereby improving the safety of the operator during emergency operations. ④ The contactor mechanical emergency start system of the present invention has a reasonable and simple structure design, simple operation, and low production cost, which is conducive to application and implementation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic structural diagram of the contactor mechanical emergency start system of the present invention;

[0026] Figure 2 is Figure 1 a partial structural schematic diagram of the contactor mechanical emergency start system shown in (removing the cabinet);

[0027] Figure 3 is Figure 2 a partial structural schematic diagram when the emergency start device shown in is assembled with the main contactor and the angle contactor;

[0028] Figure 4 is Figure 3 a schematic structural view of a partial structure of the emergency starting device shown in another perspective;

[0029] Figure 5 is Figure 4 a schematic structural view of the mounting base shown in ;

[0030] Figure 6 is Figure 4 a schematic side view of the transmission part A shown in ;

[0031] Figure 7 is Figure 3 one of the schematic structural views of the transmission part B shown in ;

[0032] Figure 8 is Figure 3 the other schematic structural view of the transmission part B shown in ;

[0033] Figure 9 a schematic view of the assembly relationship between the arc-shaped slot hole and the arc-shaped block;

[0034] Figure 10 is Figure 2 a schematic structural view of the pulling mechanism shown in another perspective;

[0035] Figure 11 is Figure 10 a schematic partial structure view of the pulling mechanism shown in ;

[0036] Figure 12 is Figure 2 a schematic partial structure view of the interlocking mechanism and the angle contactor when assembled together;

[0037] Figure 13 is Figure 12 a schematic structural view of the first actuator shown in the first perspective;

[0038] Figure 14 is Figure 12 a schematic structural view of the first actuator shown in the second perspective;

[0039] Figure 15 is Figure 12 a schematic structural view of the second actuator and the connecting piece combination shown in the first perspective;

[0040] Figure 16 is Figure 12 a schematic structural view of the second actuator and the connecting piece combination shown in the second perspective;

[0041] Figure 17 is Figure 12A schematic diagram of the structure in which the mounting plate and the linkage are assembled together and are in a first viewing angle;

[0042] Figure 18 for Figure 12 A schematic diagram of the structure in which the mounting plate and the linkage are assembled together and are in a second viewing angle;

[0043] Figure 19 for Figure 18 The diagram is a schematic structural diagram of the linkage member and spring A combination from another perspective.

[0044] Combined with the accompanying drawings, the following description is given:

[0045] 1. Main contactor; 10. Actuator shaft A; 2. Angular contactor; 20. Actuator shaft B; 3. Emergency starting device; 30. Mounting seat; 300. Base; 301. Wire groove; 302. Receiving part; 303. Perforation A; 31. Transmission member A; 310. Driving part; 3100. Arc slot; 3101. Receiving groove; 3102. Pin hole; 311. Base plate; 312. Connecting part; 32. Transmission member B; 320. Arc block; 321. Connecting member; 322. Avoidance hole; 33. Cable; 34. Pulling mechanism; 340. Sleeve; 341. First sleeve; 342. Second sleeve; 3420. Slot section A; 3421. Slot section B; 3422. Inverted L-shaped track groove; 343. Pull rod; 3430. Convex 344, handle; 345, limit screw; 346, spring member; 350, rotating shaft; 351, spring; 360, support; 361, travel switch; 4, star contactor; 5, interlocking mechanism; 50, mounting plate; 501, pin hole A; 502, through hole C; 503, guide groove; 51, first actuator; 510, first block; 511, shaft A; 512, connecting groove; 52, second actuator; 520, second block; 521, shaft B; 522, shaft C; 53, linkage member; 530, connecting member; 531, connecting ring; 532, moving part; 5320, moving section; 5321, driven section; 5322, accommodating groove; 5323, spring support; 54, spring A; 6, cabinet. DETAILED DESCRIPTION

[0046] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0047] Embodiment:

[0048] Please see attached Figure 1 To Attachment Figure 11As shown in the figure, this embodiment provides a mechanical emergency start-up system for a contactor, which includes a cabinet 6, a contactor, and an emergency start-up device 3. The contactor includes a main contactor 1, a corner contactor 2, and a star contactor 4 that are spaced apart in the cabinet 6. Among them, both the main contactor 1 and the corner contactor 2 adopt rotary contactors (that is, the rotation of the actuator shaft in the contactor drives the moving and static contacts to connect or disconnect), and the star contactor 4 can adopt a direct-acting contactor (that is, the moving iron core drives the moving contact to move up and down to achieve connection or disconnection with the static contact). The emergency start-up device 3 is connected between the main contactor 1 and the corner contactor 2 to perform emergency start-up on the main contactor 1 and the corner contactor 2. Specifically, the emergency start-up device 3 includes a transmission mechanism and a control mechanism. The transmission mechanism is provided with a mounting seat 30, a transmission part A 31 that is elastically rotatably mounted on the mounting seat 30, and two transmission parts B 32 that are respectively fixedly connected to the actuator shafts of the main contactor 1 and the corner contactor 2. For the convenience of distinction, the actuator shaft of the main contactor 1 is defined as actuator shaft A 10, and the actuator shaft of the corner contactor 2 is defined as actuator shaft B 20. Figure 3 As shown in the figure, the two transmission parts B 32 are respectively fixedly connected to the actuator shaft A 10 and the actuator shaft B 20. Driving parts 310 are respectively provided on the opposite sides of the transmission part A 31. The two driving parts 310 correspond to the two transmission parts B 32 one by one. One of the corresponding driving part 310 and the transmission part B 32 is provided with an arc-shaped slot, and the other is provided with an arc-shaped block. The arc-shaped block is movably arranged in the arc-shaped slot, and the difference between the central angle α corresponding to the arc-shaped slot and the central angle β corresponding to the arc-shaped block is greater than the angle by which the actuator shafts are driven to rotate when the main contactor 1 and the corner contactor 2 are normally attracted. The control mechanism is provided with a cable 33 (such as a steel wire rope) and a pulling mechanism 34 fixedly connected to one end of the cable 33. The other end of the cable 33 is fixedly connected to the transmission part A 31 after being wound around the mounting seat 30. Tightening the cable 33 through the pulling mechanism 34 can drive the transmission part A 31 to rotate forward. At this time, the transmission part A 31 can drive the two transmission parts B 32 to rotate forward through the two driving parts 310 thereon to perform emergency start-up on the main contactor 1 and the corner contactor 2. When the pulling mechanism 34 releases the cable 33, the transmission part A 31 can rotate reversely and reset. And by virtue of the relationship between the central angle α corresponding to the arc-shaped slot, the central angle β corresponding to the arc-shaped block, and the angle by which the actuator shafts are driven to rotate when the main contactor 1 and the corner contactor 2 are normally attracted, the reverse movement of the transmission part A 31 will not drive the transmission part B 32 to rotate, so as not to affect the attracted state of the main contactor 1 and the corner contactor 2. It can be understood that when the main contactor 1 and the corner contactor 2 are normally started, they do not interfere with each other with the emergency start-up device 3.

[0049] As can be seen from the above, the contactor mechanical emergency start-up system provided by the present application has the following advantages: ① The contactor mechanical emergency start-up system has a mechanical forced start function, which can effectively solve the problem that the contactor cannot be attracted and connected due to a failure, thereby effectively improving the safety and reliability of electrical equipment during operation. ② The contactor mechanical emergency start-up system can achieve that the mechanical emergency (forced) start and the normal electrical start do not interfere with each other and operate independently, further ensuring and improving the working safety and reliability of the entire electrical system. ③ By means of the cable in the control mechanism, the control end of the pulling mechanism can be designed outside the cabinet and away from the contactor, thereby improving the safety of the operator during emergency operations. ④ The contactor mechanical emergency start-up system has a reasonable and simple structural design, simple operation, and low production cost, which is conducive to application and implementation.

[0050] The following will describe in detail the specific structure of the contactor mechanical emergency start-up system according to this embodiment.

[0051] First, in order to better achieve that the mechanical emergency start action and the normal electrical start action of the emergency start device 3 do not interfere with each other, the assembly relationship between the arc-shaped slot and the arc-shaped block in this embodiment is preferably controlled as follows: after the pulling mechanism 34 releases the cable 33 (that is, after the transmission part A31 rotates reversely and resets), the arc-shaped block is located in the middle of the arc-shaped slot, and the difference between the central angle α corresponding to the arc-shaped slot and the central angle β corresponding to the arc-shaped block is at least twice the angle δ by which the main contactor 1 and the angle contactor 2 drive the execution shaft to rotate during normal suction, that is: as shown in the appendix Figure 9 As shown, the difference γ between the central angle α and the central angle β is greater than the angle δ by which the execution shaft of the contactor rotates; thereby ensuring that the transmission part A31 will not touch the transmission part B32 when resetting.

[0052] Specifically, for example, the arc-shaped slot 3100 is provided on the driving part 310 (as shown in the appendix Figure 6 ), and the arc-shaped block 320 is provided on the transmission part B32 (as shown in the appendix Figure 7 and 8 ), when the emergency start device 3 is not working, the arc-shaped block 320 is located in the middle of the arc-shaped slot 3100 (as shown in the appendix Figure 9As shown in the figure, if: ① the main contactor 1 and the angle contactor 2 are normally attracted, the execution shafts of both will rotate by a set angle δ (note: the rotation angles δ of the two execution shafts are the same and are both small angles), and drive the arc-shaped block 320 to freely rotate by a set angle δ in the arc-shaped slot 3100. It can be understood that since the rotation angle δ is less than the above difference γ, the arc-shaped block 320 will not touch the arc-shaped slot 3100 during the rotation process. Therefore, the normal attraction action of the main contactor 1 and the angle contactor 2 will not cause interference to the emergency start-up device 3. ② The main contactor 1 and the angle contactor 2 cannot be normally attracted, and the emergency start-up device 3 works, that is, the pulling mechanism 34 tightens the cable 33 and drives the transmission member A31 to rotate forward. At this time, one end of the arc-shaped slot 3100 first idles by an angle γ and then touches the arc-shaped block 320, and then the transmission member A31 will drive the transmission member B32 to rotate forward to perform an emergency start-up on the main contactor 1 and the angle contactor 2. After the emergency start-up is completed, the pulling mechanism 34 releases the cable 33, and the transmission member A31 rotates in the reverse direction to reset. Since the other end of the arc-shaped slot 3100 will not touch the arc-shaped block 320 during the reset process of the transmission member A31, the emergency start-up device 3 will not cause interference to the main contactor 1 and the angle contactor 2.

[0053] Next, the specific implementation structure preferably adopted by the emergency start-up device 3 in this embodiment is: Please continue to refer to the attached Figure 2 to the attached Figure 5 As shown, the mounting base 30 is provided with a base 300 for mounting on a support (such as the cabinet 6), a wire groove 301 integrally provided on the base 300 for the cable 33 to wind around, and a receiving portion 302 fixedly connected to the base 300 for receiving the transmission member A31 (and the following rotating shaft 350). In addition, to ensure the stable movement of the cable 33, a pulley (not shown in the figure) is installed in the wire groove 301 in this embodiment. Also, a support 360 is sleeved outside the receiving portion 302, and a travel switch 361 for sensing the position information of the transmission member A31 is fixedly provided on the support 360. Further, a through hole A303 is provided on the receiving portion 302, and a through hole B is provided on the support 360, both for the rotating shaft 350 to pass through movably; moreover, the through hole A303 is designed as a long strip hole to enable the position of the support 360 to be adjustable on the receiving portion 302, and further enable the position of the travel switch 361 to be adjustable.

[0054] Please continue to refer to the attached Figure 3 、attached Figure 4 and attached Figure 6As shown, the transmission member A31 is provided with a main body portion composed of two parallel substrates 311 and two connecting portions 312 fixedly connected between the two substrates 311. The main body portion is sleeved on the mounting seat 30 (specifically sleeved on the receiving portion 302), and is rotatably connected to the mounting seat 30 (specifically the receiving portion 302) through a rotating shaft 350. A spring 351 is connected between one of the connecting portions 312 and the mounting seat 30 (specifically the receiving portion 302 or the support 360) to provide an elastic restoring force to the transmission member A31. Additionally, in the transmission member A31, drive portions 310 are respectively provided on two opposite sides of the two substrates 311. Specifically, the drive portion 310 is provided with a receiving groove 3101 integrally recessed on one side of the substrate 311. Two symmetrical arc-shaped slot holes 3100 and a pin hole 3102 for tightly fitting the rotating shaft 350 to pass through are provided on the bottom of the receiving groove 3101. And, one of the connecting portions 312 (preferably the connecting portion 312 connected to the spring 351) is fixedly connected to the other end of the cable 33.

[0055] Please continue to refer to the attached Figure 3 、attached Figure 7 and attached Figure 8 As shown, the transmission member B32 is provided with a connecting member 321 for fixedly connecting to the actuating shaft (the fixed connection method can adopt riveting, screw connection or tight press-fitting, etc.). One end of the connecting member 321 facing away from the actuating shaft is matched with the shape of the receiving groove 3101 and can be movably inserted into the receiving groove 3101. Two symmetrical arc-shaped blocks 320 are integrally protruded on one end of the connecting member 321 facing away from the actuating shaft, and the two arc-shaped blocks 320 can be respectively inserted into the two arc-shaped slot holes 3100. Additionally, an avoidance hole 322 for avoiding the rotating shaft 350 is further provided on one end of the connecting member 321 facing away from the actuating shaft. It can be understood that the rotating shaft 350 is freely inserted into the avoidance hole 322 and has a gap with the avoidance hole 322, that is: the rotating shaft 350 will not drive the transmission member B32 to rotate.

[0056] Please continue to refer to the attached Figure 2 、attached Figure 10 and attached Figure 11As shown, the pulling mechanism 34 includes a sleeve 340, a first sleeve 341, a second sleeve 342, a pull rod 343, a handle 344 and a limiting component. Among them, the sleeve 340, the first sleeve 341 and the second sleeve 342 are sequentially coaxially connected and communicated, and an inverted L-shaped track groove 3422 formed by connecting a slot section A 3420 and a slot section B 3421 is provided on the second sleeve 342; one end of the pull rod 343 is movably inserted into the first sleeve 341 and fixedly connected to one end of the cable 33 passing out of the sleeve 340, and the other end of the pull rod 343 extends out of the second sleeve 342 and is fixedly connected to the handle 344; the limiting component is provided with a limit screw 345 movably passing through the inverted L-shaped track groove 3422 and fixedly connected to the pull rod 343 at the same time, and a spring member 346 sleeved between the second sleeve 342 and the pull rod 343 and capable of providing an elastic restoring force to the pull rod 343; when the handle 344 moves away from the second sleeve 342 under an external force, the pull rod 343 can tighten the cable 33 until the limit screw 345 moves into the slot section B 3421 and the handle 344 is limited and stopped; and when the limit screw 345 is moved into the slot section A 3420 and the handle 344 moves towards the second sleeve 342 under an external force, the pull rod 343 can release the cable 33.

[0057] Furthermore, fixed connection methods such as welding, riveting or screw connection are adopted between the sleeve 340 and the first sleeve 341, and between the first sleeve 341 and the second sleeve 342. The diameter of the central hole of the sleeve 340 is designed to be slightly larger than the outer diameter of the cable 33 to facilitate the travel of the cable 33. A relatively large hollow part is provided on the side wall of the first sleeve 341 to facilitate the fixed connection (bolted fixed connection can be adopted) between one end of the pull rod 343 and one end of the cable 33.

[0058] A convex part 3430 is provided on the outer wall of the pull rod 343, and a stop ring is provided on the inner wall of the second sleeve 342. The convex part 3430 and the stop ring can cooperate to stop and limit both ends of the spring member 346 sleeved outside the pull rod 343. In addition, the limit screw 345 is screwed on the convex part 3430. One end of the pull rod 343 is a square block, and one end of the pull rod 343 is tightly pressed into the installation hole of the handle 344 to achieve axial and circumferential stop connection between the two. In addition, the handle 344 extends out of the cabinet 6, enabling the emergency start device 3 to be controlled outside the cabinet, effectively improving the operation safety.

[0059] Next, please continue to refer to the appendix Figure 1 and the appendix Figure 2As shown, in the mechanical emergency start system of the contactor in this embodiment, in addition to setting the emergency start device 3, an interlock mechanism 5 is also provided between the delta contactor 2 and the star contactor 4. The interlock mechanism 5 can make one of the delta contactor 2 and the star contactor 4 in the suction state while the other remains in the off state, thus effectively avoiding the malfunction of the two contactors being simultaneously suction-connected and playing a reliable protection role for electrical equipment.

[0060] Further, the implementation structure preferably adopted by the interlock mechanism 5 in this embodiment is: Please refer to the attached Figure 12 to the attached Figure 19 As shown, the interlock mechanism 5 includes a mounting plate 50 fixedly installed on the outer shell of the star contactor 4 and two actuators oppositely and rotatably installed on the side of the mounting plate 50 facing away from the star contactor 4. The two actuators can independently rotate under the drive of the delta contactor 2 and the star contactor 4 respectively, and when one of the two actuators rotates, one end of the two actuators abuts against each other for limiting to form an interlock relationship.

[0061] Furthermore, for the convenience of distinction, the two actuators are respectively defined as a first actuator 51 and a second actuator 52; among them, the specific structure and installation method of the first actuator 51 are: Please continue to refer to the attached Figure 12 to the attached Figure 14 As shown, the first actuator 51 is provided with a first block 510, a shaft portion A511 integrally provided on one side of the first block 510 and simultaneously rotatably connected to the side of the mounting plate 50 facing away from the star contactor 4, and a connection groove 512 integrally provided on the other side of the first block 510 and for tightly press-fitting and cooperating with the actuator shaft B20 of the delta contactor 2, that is: the first actuator 51 is rotatably connected to the mounting plate 50 through the shaft portion A511 thereon and is fixedly connected to the actuator shaft B20 through the connection groove 512 thereon. It can be understood that based on the orientation shown in the attached Figure 12 As shown, when the delta contactor 2 is suction-connected, its actuator shaft B20 rotates counterclockwise, thereby driving the first block 510 to rotate counterclockwise, realizing the upper end of the first block 510 abutting against and limiting the second actuator 52 (specifically, the upper end of the following second block 520), and further making the star contactor 4 remain in the off state.

[0062] The specific structure of the second actuator 52 is: Please continue to refer to the attached Figure 12 , the attached Figure 15 and the attached Figure 16As shown, the second actuator 52 is provided with a second block 520, and an axis B521 and an axis C522 integrally provided on one side of the second block 520, the axis B521 is rotatably connected to the side of the mounting plate 50 facing away from the star contactor 4, and the axis C522 can movably pass through the mounting plate 50, that is, the second actuator 52 is rotatably connected to the mounting plate 50 through the axis B521 thereon. In addition, the upper ends of the second block 520 and the first block 510 can abut against each other for limiting cooperation.

[0063] The specific structure for realizing the second actuator 52 to rotate under the drive of the star contactor 4 is as follows: Figure 15 To Attachment Figure 19 As shown, the interlocking mechanism 5 also includes a linkage member 53, which is provided with a connecting member 530 fixedly connected to the second actuator 52, a connecting ring 531 positioned and sleeved outside the connecting member 530, and a moving part 532 arranged on the mounting plate 50 and capable of elastically moving along the up and down directions under the driving of the actuator end of the star contactor 4, and the moving part 532 is fixedly connected to the connecting ring 531 (can be integrally connected), that is: Figure 12 The orientation shown is used as a reference. When the star contactor 4 is attracted, its actuator end can move downward, thereby driving the moving part 532 to move downward. The downward movement of the moving part 532 can drive the connecting ring 531, the connecting member 530 and the second actuator 52 to rotate clockwise together, so that the upper end of the second block 520 abuts against the upper end of the first block 510 to limit the position, thereby keeping the angular contactor 2 in the disconnected state. When the star contactor 4 is disconnected, the moving part 532 elastically resets upward, and accordingly, the second actuator 52 rotates counterclockwise to reset and release the interlocking relationship with the first actuator 51.

[0064] Furthermore, the shaft portion C522 is a hollow body with an opening, one end of the connecting piece 530 is a shaft structure with a one-way ratchet, and the other end is a shaft structure without a one-way ratchet, and one end of the connecting piece 530 is tightly pressed into the shaft portion C522, that is, the connecting piece 530 is tightly matched with the shaft portion C522.

[0065] The connecting ring 531 is tightly mounted on the other end of the connecting member 530 .

[0066] The moving part 532 is provided with a moving section 5320 that can move up and down and is arranged on the side of the mounting plate 50 facing the star contactor 4, a driven section 5321 integrally arranged on the moving section 5320 for driving the actuating end of the star contactor 4, and a receiving groove 5322 integrally recessed in the moving section 5320. The moving section 5320 is integrally connected to the connecting ring 531. A spring A54 is arranged in the receiving groove 5322 to provide an elastic reset force to the linkage 53 and the second actuator 52. It can be understood that spring seats 5323 for installing the spring A54 are respectively arranged on the moving part 532 and the mounting plate 50.

[0067] In addition, based on the above structures of the first actuator 51, the second actuator 52 and the linkage 53, two pin holes A501 respectively rotatably engaged with the shaft portion A511 and the shaft portion B521, a through hole C502 for the shaft portion C522 to movably pass through, and a guide groove 503 for receiving and guiding the moving part 532 are arranged on the mounting plate 50.

[0068] As can be seen from the above, the interlocking mechanism 5 of the present application has a simple and reasonable structure, is convenient to use, and can reliably protect the contactor.

[0069] Note: The prefixes "first", "second", etc. (such as the first sleeve, the second sleeve, etc.) of the component names and the suffixes "A", "B", "C", etc. (such as the through hole A, the through hole B, the through hole C, etc.) of the component names in this specification are only for the convenience of clear description, rather than for limiting the scope of implementation of this invention patent.

[0070] In summary, the contactor mechanical emergency start system of the present invention has a mechanical forced start function, and can realize that the mechanical emergency start and the normal electrical start do not interfere with each other and operate independently, effectively improving the safety and reliability of the electrical equipment during operation.

[0071] In the above description, many specific details are set forth in order to fully understand the present invention. However, the above description is only a preferred embodiment of the present invention, and the present invention can be implemented in many other ways different from those described herein. Therefore, the present invention is not limited by the specific implementations disclosed above. At the same time, any person skilled in the art can make many possible changes and modifications to the technical solution of the present invention, or modify it into an equivalent embodiment with equivalent changes, without departing from the scope of the technical solution of the present invention. Any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A mechanical emergency starting system for a contactor, characterized in that: Comprising: A main contactor (1) and a corner contactor (2) both adopting a rotary contactor structure; An emergency starting device (3), which includes a transmission mechanism and a control mechanism; the transmission mechanism is provided with a mounting seat (30), a transmission member A (31) elastically rotatably mounted on the mounting seat (30), and two transmission members B (32) respectively fixedly connected to the actuating shafts of the main contactor (1) and the corner contactor (2). Driving portions (310) are respectively provided on the opposite sides of the transmission member A (31). The two driving portions (310) correspond to the two transmission members B (32) one by one. One of the corresponding driving portion (310) and the transmission member B (32) is provided with an arc-shaped slot hole, and the other is provided with an arc-shaped block. The arc-shaped block is movably arranged in the arc-shaped slot hole, and the difference between the central angle corresponding to the arc-shaped slot hole and the central angle corresponding to the arc-shaped block is at least twice the angle of rotation of the actuating shaft when the main contactor (1) and the corner contactor (2) are normally attracted; the control mechanism is provided with a cable (33) and a pulling mechanism (34) connected to one end of the cable (33). The other end of the cable (33) is wound around the mounting seat (30) and then connected to the transmission member A (31); when the pulling mechanism (34) tightens the cable (33), it can drive the transmission member A (31) to rotate forward. At this time, the two driving portions (310) can drive the two transmission members B (32) to rotate forward to perform emergency starting on the main contactor (1) and the corner contactor (2); when the pulling mechanism (34) releases the cable (33), the transmission member A (31) can rotate reversely and reset. At this time, the arc-shaped block is located in the middle of the arc-shaped slot hole and does not drive the transmission member B (32) to rotate.

2. The contactor mechanical emergency start-up system according to claim 1, characterized in that: The arc-shaped slot hole is provided on the driving portion (310), and the arc-shaped block is provided on the transmission member B (32).

3. The contactor mechanical emergency start-up system according to claim 2, characterized in that: The transmission member A (31) is further provided with a main body portion composed of two parallel substrates (311) and two connecting portions (312) fixedly connected between the two substrates (311). The main body portion is sleeved on the mounting seat (30) and is rotatably connected to the mounting seat (30) through a rotating shaft (350). A spring (351) is connected between one of the connecting portions (312) and the mounting seat (30) to provide an elastic restoring force to the transmission member A (31); In addition, in the transmission member A (31), the driving portions (310) are respectively provided on the opposite sides of the two substrates (311), and one of the connecting portions (312) is fixedly connected to the other end of the cable (33).

4. The contactor mechanical emergency starting system according to claim 3, characterized in that: The driving portion (310) is further provided with a receiving groove (3101) recessed on one side of the substrate (311). Two symmetrical arc-shaped slot holes and a pin hole (3102) for tightly fitting the rotating shaft (350) to pass through are provided on the bottom of the receiving groove (3101); The transmission part B (32) is further provided with a connecting part (321) for fixedly connecting with the execution shaft. One end of the connecting part (321) facing away from the execution shaft matches the shape of the receiving groove (3101) and can be movably inserted into the receiving groove (3101), and two symmetric arc-shaped blocks protrude from one end of the connecting part (321) facing away from the execution shaft. In addition, an avoidance hole (322) for avoiding the rotating shaft (350) is further provided on one end of the connecting part (321) facing away from the execution shaft.

5. The contactor mechanical emergency start system according to claim 3, characterized in that: The mounting seat (30) is provided with a base (300) for mounting on a support, a wire groove (301) provided on the base (300) for the cable (33) to wind around, and a receiving part (302) fixedly connected to the base (300) for receiving the rotating shaft (350) and the transmission part A (31). In addition, a support (360) is sleeved outside the receiving part (302), and a travel switch (361) for sensing the position information of the transmission part A (31) is fixedly arranged on the support (360).

6. The mechanical emergency start-up system of a contactor according to claim 1, characterized in that: The pulling mechanism (34) includes a sleeve (340), a first sleeve (341), a second sleeve (342), a pull rod (343), a handle (344) and a limiting component. The sleeve (340), the first sleeve (341) and the second sleeve (342) are sequentially coaxially connected and communicated, and an inverted L-shaped track groove (3422) formed by connecting a slot section A (3420) and a slot section B (3421) is provided on the second sleeve (342); one end of the pull rod (343) is movably inserted into the first sleeve (341) and fixedly connected with one end of the cable (33) passing through the sleeve (340), and the other end of the pull rod (343) extends out of the second sleeve (342) and is fixedly connected with the handle (344); the limiting component is provided with a limit screw (345) movably passing through the inverted L-shaped track groove (3422) and fixedly connected with the pull rod (343) at the same time, and a spring member (346) sleeved between the second sleeve (342) and the pull rod (343) and capable of providing an elastic reset force to the pull rod (343); when the handle (344) moves away from the second sleeve (342) under an external force, the pull rod (343) can tighten the cable (33) until the limit screw (345) moves into the slot section B (3421) and the handle (344) is limited and stopped; when the limit screw (345) is moved into the slot section A (3420) and the handle (344) moves towards the second sleeve (342) under an external force, the pull rod (343) can release the cable (33).

7. The contactor mechanical emergency start system according to claim 1, characterized in that: It further includes a star contactor (4) and an interlock mechanism (5). The interlock mechanism (5) is connected between the delta contactor (2) and the star contactor (4), and when one of the delta contactor (2) and the star contactor (4) is in the closed state, the other can be kept in the open state by the interlock mechanism (5).

8. The contactor mechanical emergency start-up system according to claim 7, characterized in that: The interlock mechanism (5) includes a mounting plate (50) fixedly installed on the housing of the star contactor (4) and two actuators oppositely and rotatably installed on the side of the mounting plate (50) facing away from the star contactor (4). The two actuators can independently rotate under the drive of the delta contactor (2) and the star contactor (4) respectively. When one of the two actuators rotates, one ends of the two actuators abut against each other for limiting and form an interlock relationship.

9. The contactor mechanical emergency start-up system according to claim 8, wherein: The two actuators are respectively defined as a first actuator (51) and a second actuator (52); The first actuator (51) is fixedly connected to the actuator shaft of the delta contactor (2); The interlock mechanism (5) further includes a linkage member (53). The linkage member (53) is provided with an adapter (530) fixedly connected to the second actuator (52), an adapter ring (531) positioned and sleeved outside the adapter (530), and a moving part (532) arranged on the mounting plate (50) and capable of elastically moving in the vertical direction under the drive of the actuator end of the star contactor (4). The moving part (532) is fixedly connected to the adapter ring (531), that is, the elastic movement of the moving part (532) can drive the adapter ring (531), the adapter (530) and the second actuator (52) to rotate together.

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