Mechanical emergency starting system of contactor

Abstract

The invention discloses a contactor mechanical emergency starting system, which comprises a main contactor and an angle contactor, and is characterized in that an emergency starting device comprises a mounting seat, a transmission part A rotationally mounted on the mounting seat, two transmission parts B respectively connected with execution shafts of the main contactor and the angle contactor, an inhaul cable and a traction mechanism connected with one end of the inhaul cable; the two opposite sides of the transmission part A are provided with driving parts corresponding to the transmission part B. One of the driving parts and the transmission part B is provided with an arc-shaped groove hole, the other one is provided with an arc-shaped block, and the difference between the central angles corresponding to the arc-shaped groove hole and the arc-shaped block is larger than the rotation angle of the execution shaft. The other end of the inhaul cable is connected with the transmission part A. The traction mechanism tensions the inhaul cable to drive the transmission part A to rotate in the forward direction, and then the transmission part B is driven to rotate so as to start the main contactor and the angle contactor emergently. The traction mechanism releases the inhaul cable to enable the transmission part A to reset and cannot drive the transmission part B to rotate. The system has a mechanical emergency starting function and does not interfere with normal starting of electrical equipment, and safe and reliable work of the electrical equipment is ensured.

Description

Technical Field

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

[0002] In the field of firefighting and self-rescue equipment, when a fire breaks out, accidents of fire pump starting circuit failure often occur. Once the firefighting system cannot normally supply water to fire hydrants or sprinklers and other firefighting facilities, the consequences will be disastrous. Therefore, in order to ensure the safety and reliability of the firefighting system, an emergency starting device needs to be configured to force the start contactor to close normally in certain emergency situations.

[0003] In the prior art, a mechanical handle and a transmission lever combination, or a crank and a connecting rod combination, are conventionally used to drive the moving contact to achieve the connection or disconnection between the moving contact and the stationary contact. However, the above implementations are not only relatively complex in structure, but also prone to problems such as inadequate connection and even interference with the normal operation of the contactor.

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

[0005] In order to overcome the above-mentioned defects, the present invention provides a contactor mechanical emergency starting system, which has a mechanical forced starting function and can achieve independent operation of mechanical emergency starting and normal starting of electrical appliances without interfering with each other, thereby effectively improving the safety and reliability of electrical equipment during operation.

[0006] The technical solution adopted by the present invention to solve the technical problem is: a contactor mechanical emergency starting system, comprising: Main contactors and angular contactors; An emergency starting device, comprising a transmission mechanism and a control mechanism; the transmission mechanism is provided with a mounting seat, a transmission member A elastically rotatably mounted on the mounting seat, and two transmission members B respectively fixedly connected to the actuator shafts of the main contactor and the angular contactor, the transmission member A is provided with driving parts on opposite sides, the two driving parts correspond to the two transmission members B one by one, one of the corresponding driving parts and the transmission member B is provided with an arcuate slot, and the other is provided with an arcuate block, the arcuate block is movably arranged in the arcuate slot, and the central angle corresponding to the arcuate slot is the same as the central angle corresponding to the arcuate block The difference is greater than the angle at which the main contactor and the angular contactor drive the actuator shaft to rotate when they are normally attracted; the control mechanism is provided with a cable and a pulling mechanism connected to one end of the cable, and the other end of the cable is connected to the transmission member A after being wound around the mounting seat; the pulling mechanism tightens the cable to drive the transmission member A to rotate in the forward direction, and then the two driving parts can drive the two transmission members B to rotate in the forward direction to perform emergency start-up of the main contactor and the angular contactor; the pulling mechanism releases the cable to enable the transmission member A to rotate in the reverse direction and reset, and will not drive the transmission member B to rotate.

[0007] As a further improvement of the present invention, after the pulling mechanism releases the cable, the arc block is located in the middle of the arc slot, and the difference between the central angle corresponding to the arc slot and the central angle corresponding to the arc block is at least twice the angle at which the main contactor and the angular contactor drive the actuator shaft to rotate when normally attracted.

[0008] As a further improvement of the present invention, the driving part is provided with the arc-shaped slot, and the transmission member B is provided with the arc-shaped block.

[0009] As a further improvement of the present invention, the transmission member A is further provided with a main body consisting of two parallel base plates and two connecting parts fixedly connected between the two base plates, the main body is sleeved on the mounting seat and rotatably 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 to the transmission member A; In addition, in the transmission member A, the driving parts are respectively provided on the two opposite sides of the two base plates, and one of the connecting parts is fixedly connected to the other end of the cable.

[0010] As a further improvement of the present invention, the driving part is further provided with a receiving groove recessed on one side of the base plate, and the bottom of the receiving groove is provided with two symmetrical arc-shaped slots and a pin hole for the rotating shaft to pass through in a tight fit; The transmission member B is further provided with a connecting member for fixedly connecting with the execution shaft, and one end of the connecting member facing away from the execution shaft matches the shape of the receiving groove and can be movably inserted into the receiving groove, and two symmetrical arc blocks are convexly provided on one end of the connecting member facing away from the execution shaft; In addition, an avoidance hole for avoiding the rotating shaft is provided on one end of the connecting member facing away from the execution shaft.

[0011] 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 the cable to be wound around, and a receiving portion fixedly connected to the base and used to receive the rotating shaft and the transmission member A; In addition, a support is sleeved outside the receiving portion, and a travel switch for sensing the position information of the transmission member A is fixedly arranged on the support.

[0012] As a further improvement of the present invention, the pulling mechanism includes a sleeve, a first sleeve, a second sleeve, a pulling rod, a handle and a limiting assembly. The sleeve, the first sleeve and the second sleeve are coaxially connected and communicated in sequence, and the second sleeve is provided with an inverted L-shaped track groove formed by connecting a slot section A and a slot section B; one end of the pulling rod is movably inserted into the first sleeve and fixedly connected to one end of the pulling cable passing through the sleeve, and the other end of the pulling rod extends out of the second sleeve and is fixedly connected to the handle; the limiting assembly is provided with a movable through hole section A and a second through hole section B. A limit screw is arranged in the inverted L-shaped trajectory groove and fixedly connected to the pull rod, and a spring member is sleeved between the second sleeve and the pull rod and can provide elastic restoring force to the pull rod; when the handle moves back to the second sleeve under the action of external force, the pull rod can tighten the cable until the limit screw moves into the slot section B and the handle is limited and stopped; and when the limit screw is moved into the slot section A and the handle moves toward the second sleeve under the action of external force, the pull rod can release the cable.

[0013] As a further improvement of the present invention, it also includes a star contactor and an interlocking mechanism, wherein the interlocking mechanism is connected between the angular contactor and the star contactor, and the interlocking mechanism can keep one of the angular contactor and the star contactor in an engaged state while the other remains in an disconnected state.

[0014] As a further improvement of the present invention, the interlocking mechanism includes a mounting plate fixedly mounted on the housing of the star contactor and two actuators relatively and rotatably mounted on the side of the mounting plate facing away from the star contactor, the two actuators being able to rotate independently under the drive of the angular contactor and the star contactor respectively, and when one of the two actuators rotates, one ends of the two actuators abut against each other to limit the position, forming an interlocking relationship.

[0015] As a further improvement of the present invention, the two actuators are defined as a first actuator and a second actuator respectively; The first actuator is fixedly connected to the actuator shaft of the angular contactor; The interlocking mechanism also includes a linkage member, which is provided with a connecting member fixedly connected to the second actuator, a connecting ring positioned on the outside of the connecting member, and a moving part arranged on the mounting plate and capable of elastically moving in the up and down directions under the drive of the actuator end of the star contactor, and the moving part is fixedly connected to the connecting ring, that is, the elastic movement of the moving part can drive the connecting ring, the connecting member and the second actuator to rotate together.

[0016] The beneficial effects of the present invention are: ① The contactor mechanical emergency starting system of the present invention has a mechanical forced starting function, which can effectively solve the problem that the contactor cannot be attracted and connected due to a fault, thereby effectively improving the safety and reliability of electrical equipment during operation. ② The contactor mechanical emergency starting system of the present invention can realize that the mechanical emergency (forced) start and the normal start of the electrical appliance 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 pull rope 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 when performing emergency operations. ④ The structural design of the contactor mechanical emergency starting system of the present invention is reasonable and concise, the control is simple, and the production cost is low, which is conducive to application implementation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the contactor mechanical emergency starting system of the present invention; Figure 2 for Figure 1 A partial structural diagram of the contactor mechanical emergency starting system shown in (the cabinet is removed); Figure 3 for Figure 2 A schematic diagram of a partial structure when the emergency starting device is assembled with the main contactor and the angular contactor; Figure 4 for Figure 3A schematic diagram of the structure of the partial structure of the emergency starting device shown in another viewing angle; Figure 5 for Figure 4 A schematic diagram of the structure of the mounting base shown in ; Figure 6 for Figure 4 A side structural schematic diagram of the transmission member A shown in FIG. Figure 7 for Figure 3 One of the structural schematic diagrams of the transmission member B shown in FIG. Figure 8 for Figure 3 The second structural schematic diagram of the transmission member B shown in FIG. Fig. 9 is a schematic diagram of the assembly relationship between the arc-shaped slot and the arc-shaped block; Fig.10 for Figure 2 A schematic diagram of the structure of the pulling mechanism shown in another viewing angle; Fig.11 for Fig.10 A partial structural diagram of the pulling mechanism shown in FIG. Fig.12 for Figure 2 A schematic diagram of a local structure when the interlocking mechanism shown in is assembled with the angular contactor; Fig.13 for Fig.12 Schematic diagram of the structure of the first actuator at a first viewing angle; Fig.14 for Fig.12 Schematic diagram of the structure of the first actuator in a second viewing angle; Fig.15 for Fig.12 Schematic diagram of the structure of the second actuator and the connecting member combination at a first viewing angle; Fig.16 for Fig.12 A schematic structural diagram of the second actuator and the connecting member combination at a second viewing angle; Fig.17 for Fig.12 A schematic diagram of the structure in which the mounting plate and the linkage are assembled together and are in a first viewing angle; Fig.18 for Fig.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; Fig.19 for Fig.18 The diagram is a schematic structural diagram of the linkage member and spring A combination from another perspective.

[0018] Combined with the accompanying drawings, the following description is given: 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

[0019] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0020] Embodiment: Please refer to the attached Figure 1 To Attachment Fig.11As shown, this embodiment provides a contactor mechanical emergency starting system, including a cabinet 6, a contactor and an emergency starting device 3, wherein the contactor includes a main contactor 1, an angular contactor 2 and a star contactor 4 arranged at intervals in the cabinet 6, wherein the main contactor 1 and the angular contactor 2 both adopt a rotary contactor (that is, the moving and static contacts are connected or separated by rotating the actuator shaft in the contactor), the star contactor 4 can adopt a direct-acting contactor (that is, the moving contact is driven up and down by the moving iron core to achieve connection or separation with the static contact), and the emergency starting device 3 is connected between the main contactor 1 and the angular contactor 2 to perform emergency starting on the main contactor 1 and the angular contactor 2. In particular, the emergency starting device 3 includes a transmission mechanism and a control mechanism. The transmission mechanism is provided with a mounting seat 30, a transmission member A31 elastically rotatably mounted on the mounting seat 30, and two transmission members B32 respectively fixedly connected to the actuator shafts of the main contactor 1 and the angular contactor 2. For ease of distinction, the actuator shaft of the main contactor 1 is defined as the actuator shaft A10, and the actuator shaft of the angular contactor 2 is defined as the actuator shaft B20. Figure 3 The figure shows that the two transmission members B32 are respectively fixedly connected to the execution shaft A10 and the execution shaft B20, and the transmission member A31 is provided with a driving part 310 on the opposite sides, and the two driving parts 310 correspond to the two transmission members B32 one by one. One of the corresponding driving parts 310 and the transmission member B32 is provided with an arc slot, and the other is provided with an arc block, and the arc block is movably arranged in the arc slot, and the difference between the center angle α corresponding to the arc slot and the center angle β corresponding to the arc block is greater than that of the main contactor 1 and the angular contactor 2. The angle at which the actuator shaft is driven to rotate when 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, and the other end of the cable 33 is fixedly connected to the transmission member A31 after being wound around the mounting seat 30; tightening the cable 33 by the pulling mechanism 34 can drive the transmission member A31 to rotate in the forward direction, and then the transmission member A31 can drive the two transmission members B32 to rotate in the forward direction through the two driving parts 310 thereon, so as to perform emergency start of the main contactor 1 and the angular contactor 2. When the pulling mechanism 34 releases the cable 33, the transmission member A31 can rotate in the opposite direction to reset, and by virtue of the relationship between the central angle α corresponding to the arc slot, the central angle β corresponding to the arc block, and the angle at which the main contactor 1 and the angular contactor 2 drive the actuator shaft to rotate when normally engaged, the reset movement of the transmission member A31 will not drive the transmission member B32 to rotate, thereby not affecting the engaged state of the main contactor 1 and the angular contactor 2. It is understandable that when the main contactor 1 and the angular contactor 2 are normally started, they do not interfere with the emergency start device 3.

[0021] From the above, it can be seen that the contactor mechanical emergency starting system provided by the present application has the following advantages: ① The contactor mechanical emergency starting system has a mechanical forced starting function, which can effectively solve the problem that the contactor cannot be attracted and connected due to a fault, thereby effectively improving the safety and reliability of electrical equipment during operation. ② The contactor mechanical emergency starting system can realize that the mechanical emergency (forced) start and the normal start of the electrical appliance do not interfere with each other and operate independently, further ensuring the improvement of the working safety and reliability of the entire electrical system. ③ By means of the pull rope 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 when performing emergency operations. ④ The structural design of the contactor mechanical emergency starting system is reasonable and concise, the control is simple, and the production cost is low, which is conducive to application implementation.

[0022] The specific structure of the contactor mechanical emergency starting system described in this embodiment is described in detail below.

[0023] First, in order to better realize that the mechanical emergency starting action of the emergency starting device 3 does not interfere with the normal starting action of the electrical appliance, the present embodiment particularly optimizes the assembly relationship between the arc slot and the arc block as follows: after the pulling mechanism 34 releases the cable 33 (that is, after the transmission member A31 rotates in the opposite direction and resets), the arc block is located in the middle of the arc slot, and the difference between the center angle α corresponding to the arc slot and the center angle β corresponding to the arc block is at least twice the angle δ at which the main contactor 1 and the angular contactor 2 drive the actuator shaft to rotate when normally attracted, that is: see the attached Fig. 9 As shown, the difference γ between the central angle α and the central angle β is greater than the rotation angle δ of the actuator shaft of the contactor; thereby ensuring that the transmission member A31 does not touch the transmission member B32 when resetting.

[0024] Specifically, the driving part 310 is provided with the arc-shaped slot 3100 (see attached Figure 6 As shown), the transmission member B32 is provided with the arc block 320 (see attached Figure 7 and 8 ), when the emergency starting device 3 is not working, the arc block 320 is located in the middle of the arc slot 3100 (see FIG. Fig. 9As shown), if: ① the main contactor 1 and the angular contactor 2 are normally attracted, the execution axes of the two will rotate the set angle δ (Note: the rotation angles δ of the two execution axes are the same and are both small angles), and drive the arc block 320 to freely rotate the set angle δ in the arc slot 3100; it is understandable that because the rotation angle δ is less than the above difference γ, the arc block 320 will not touch the arc slot 3100 during the rotation process, and therefore, the normal attraction action of the main contactor 1 and the angular contactor 2 will not interfere with the emergency starting device 3. ② The main contactor 1 and the angular contactor 2 cannot be normally attracted, and the emergency start device 3 works, that is, the pulling mechanism 34 tightens the cable 33 and drives the transmission member A31 to rotate forward. At that time, one end of the arc slot 3100 first idles at an angle of γ and then touches the arc block 320, and then the transmission member A31 will drive the transmission member B32 to rotate forward to perform emergency start of the main contactor 1 and the angular contactor 2. When the emergency start is completed, the pulling mechanism 34 releases the cable 33, and the transmission member A31 rotates in the opposite direction to reset. Because during the reset process of the transmission member A31, the other end of the arc slot 3100 will not touch the arc block 320, so the emergency start device 3 will not cause interference to the main contactor 1 and the angular contactor 2.

[0025] Next, the specific implementation structure preferably adopted by the emergency starting device 3 in this embodiment is: Please continue to refer to the attached Figure 2 To Attachment Figure 5 As shown, the mounting seat 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 and for the cable 33 to be wound around, and a receiving portion 302 fixedly connected to the base 300 and used to receive the transmission member A31 (and the rotating shaft 350 described below). In addition, in order to ensure the stable movement of the cable 33, a pulley (not shown in the figure) is also installed in the wire groove 301 in this embodiment. In addition, a support 360 is also provided on the outer cover of 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. Furthermore, a through hole A303 is provided on the receiving portion 302 and a through hole B is provided on the support 360, both of which are used for the rotating shaft 350 to movably pass through; moreover, the through hole A303 is also designed as a long strip hole to achieve the adjustable position of the support 360 on the receiving portion 302, thereby achieving the adjustable position of the travel switch 361.

[0026] Please continue to refer to the attached Figure 3 , Attachment Figure 4 and attached Figure 6As shown, the transmission member A31 is provided with a main body consisting of two parallel base plates 311 and two connecting parts 312 fixedly connected between the two base plates 311, the main body is sleeved on the mounting seat 30 (specifically sleeved on the receiving part 302), and is rotatably connected to the mounting seat 30 (specifically the receiving part 302) through a rotating shaft 350, and a spring 351 is connected between one of the connecting parts 312 and the mounting seat 30 (specifically the receiving part 302 or the support 360) to provide elastic restoring force to the transmission member A31. In addition, in the transmission member A31, the driving parts 310 are respectively provided on the two opposite sides of the two base plates 311. Specifically, the driving part 310 is provided with a receiving groove 3101 integrally recessed on one side of the base plate 311, and the bottom of the receiving groove 3101 is provided with two symmetrical arc-shaped slots 3100 and a pin hole 3102 for the rotating shaft 350 to pass through. And, one of the connecting parts 312 (preferably the connecting part 312 connected to the spring 351) is fixedly connected to the other end of the cable 33.

[0027] Please continue to refer to the attached Figure 3 , Attachment Figure 7 and attached Figure 8 As shown, the transmission member B32 is provided with a connecting member 321 for fixed connection with the execution shaft (the fixed connection method can be riveting, screw connection or tight fitting crimping, etc.), the end of the connecting member 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 the end of the connecting member 321 facing away from the execution shaft is integrally provided with two symmetrical arc blocks 320, and the two arc blocks 320 can be inserted into the two arc slots 3100 in a one-to-one correspondence. In addition, the end of the connecting member 321 facing away from the execution shaft is also provided with an avoidance hole 322 for avoiding the rotating shaft 350. It can be understood that the rotating shaft 350 is freely inserted into the avoidance hole 322 and has a gap between the avoidance hole 322, that is, the rotating shaft 350 will not drive the transmission member B32 to rotate.

[0028] Please continue to refer to the attached Figure 2 , Attachment Fig.10 and attached Fig.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 assembly, wherein the sleeve 340, the first sleeve 341 and the second sleeve 342 are coaxially connected and communicated in sequence, and the second sleeve 342 is provided with an inverted L-shaped track groove 3422 formed by connecting a slot section A3420 and a slot section B3421; 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 through 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 assembly is provided with a movable insertion therein. A limit screw 345 in the inverted L-shaped trajectory groove 3422 and fixedly connected to the pull rod 343, and a spring member 346 which is sleeved between the second sleeve 342 and the pull rod 343 and can provide elastic restoring force to the pull rod 343; when the handle 344 moves away from the second sleeve 342 under the action of external force, the pull rod 343 can tighten the cable 33 until the limit screw 345 moves into the slot section B3421 and the handle 344 is limited and stopped; and when the limit screw 345 is moved into the slot section A3420 and the handle 344 moves toward the second sleeve 342 under the action of external force, the pull rod 343 can release the cable 33.

[0029] Furthermore, the sleeve 340 and the first sleeve 341, as well as the first sleeve 341 and the second sleeve 342 are fixedly connected by welding, riveting or screw connection. The diameter of the central hole of the sleeve 340 is designed to be slightly larger than the outer diameter of the cable 33, so as to facilitate the movement of the cable 33. A large hollow portion is provided on the side wall of the first sleeve 341, so as to facilitate the fixed connection of one end of the pull rod 343 with one end of the cable 33 (bolts may be used for fixed connection).

[0030] A convex portion 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 portion 3430 and the stop ring can cooperate to stop and limit the two ends of the spring member 346 sleeved outside the pull rod 343. In addition, the limit screw 345 is screwed on the convex portion 3430, and one end of the pull rod 343 is a square block. One end of the pull rod 343 is tightly pressed into the mounting 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, so that the emergency starting device 3 can be operated outside the cabinet, which effectively improves the operational safety.

[0031] Next, please refer to the attached Figure 1 and attached Figure 2As shown, in addition to the emergency starting device 3, an interlocking mechanism 5 is also provided between the angular contactor 2 and the star contactor 4 in the contactor mechanical emergency starting system of the present embodiment. The interlocking mechanism 5 can make one of the angular contactor 2 and the star contactor 4 in the attracted state while the other remains in the disconnected state, thereby effectively avoiding the erroneous operation of the two contactors being attracted and connected at the same time, and playing a reliable protective role for the electrical equipment.

[0032] Further, the interlocking mechanism 5 of this embodiment preferably adopts the following implementation structure: Fig.12 To Attachment Fig.19 As shown, the interlocking mechanism 5 includes a mounting plate 50 fixedly mounted on the housing of the star contactor 4 and two actuators relatively and rotatably mounted on the side of the mounting plate 50 facing away from the star contactor 4. The two actuators can be independently rotated under the drive of the angular contactor 2 and the star contactor 4, respectively, and when one of the two actuators rotates, one ends of the two actuators abut against each other to form an interlocking relationship.

[0033] Furthermore, for the convenience of distinction, the two actuators are defined as a first actuator 51 and a second actuator 52; wherein the specific structure and installation method of the first actuator 51 are as follows: Fig.12 To Attachment Fig.14 As shown, the first actuator 51 is provided with a first block 510, an axis portion A511 integrally provided on one side of the first block 510 and rotatably connected to the side of the mounting plate 50 facing away from the star contactor 4, and a connecting groove 512 integrally provided on the other side of the first block 510 and provided for tight fit and press fit with the actuator shaft B20 of the angular contactor 2, that is, the first actuator 51 is rotatably connected to the mounting plate 50 through the axis portion A511 thereon, and is fixedly connected to the actuator shaft B20 through the connecting groove 512 thereon. It can be understood that, with the attached Fig.12 Taking the orientation shown as a reference, when the angular contactor 2 is attracted, its actuator shaft B20 rotates counterclockwise, thereby driving the first block 510 to rotate counterclockwise, so that the upper end of the first block 510 abuts and limits the second actuator 52 (specifically, the upper end of the second block 520 described below), thereby keeping the star contactor 4 in the disconnected state.

[0034] The specific structure of the second actuator 52 is as follows: Fig.12 , Attachment Fig.15 and attached Fig.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.

[0035] The specific structure for realizing the second actuator 52 to rotate under the drive of the star contactor 4 is as follows: Fig.15 To Attachment Fig.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: Fig.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.

[0036] 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.

[0037] The connecting ring 531 is tightly mounted on the other end of the connecting member 530 .

[0038] The moving part 532 is provided with a moving section 5320 which is arranged on the side of the mounting plate 50 facing the star contactor 4 and can move up and down, a driven section 5321 which is integrally arranged on the moving section 5320 and is used to drive the execution end of the star contactor 4, and a receiving groove 5322 which is integrally recessed on the moving section 5320. The moving section 5320 is integrally connected with the connecting ring 531. A spring A54 is arranged in the receiving groove 5322 to provide elastic reset force to the linkage member 53 and the second execution member 52. It can be understood that the moving part 532 and the mounting plate 50 are respectively provided with a spring support 5323 for installing the spring A54.

[0039] In addition, based on the above-mentioned structure of the first actuator 51, the second actuator 52 and the linkage member 53, the mounting plate 50 is provided with two pin holes A501 which respectively rotatably cooperate with the shaft A511 and the shaft B521, a through hole C502 for the shaft C522 to movably pass through, and a guide groove 503 for accommodating and guiding the movable part 532.

[0040] It can be seen from the above that the interlocking mechanism 5 described in the present application has a simple and reasonable structure, is easy to use, and can provide reliable protection for the contactor.

[0041] Note: In this specification, the prefixes "first", "second", etc. of the component names (such as the first sleeve, the second sleeve, etc.), and the suffixes "A", "B", "C", etc. of the component names (such as perforation A, perforation B, perforation C, etc.) are only for the convenience of description and are not used to limit the scope of implementation of the patent of this invention.

[0042] In summary, the contactor mechanical emergency starting system of the present invention has a mechanical forced starting function, and can realize independent operation of mechanical emergency starting and normal starting of electrical appliances without interfering with each other, thereby effectively improving the safety and reliability of electrical equipment during operation.

[0043] Many specific details are described in the above description to facilitate a full understanding of the present invention. However, the above description is only a preferred embodiment of the present invention. The present invention can be implemented in many other ways different from those described herein, so the present invention is not limited to the specific implementation disclosed above. At the same time, any person familiar with the art can make many possible changes and modifications to the technical solution of the present invention using the methods and technical contents disclosed above without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. 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 falls within the scope of protection of the technical solution of the present invention.

Claims

1. A contactor mechanical emergency starting system, characterized in that: include: Main contactor (1) and angular contactor (2); An emergency starting device (3) comprises 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 angular contactor (2); driving parts (310) are respectively provided on opposite sides of the transmission member A (31); the two driving parts (310) correspond to the two transmission members B (32) in a one-to-one manner; one of the corresponding driving parts (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 center angle corresponding to the arc-shaped slot hole and the center angle corresponding to the arc-shaped block is greater than the center angle of the main contactor. (1) and the angular contactor (2) drive the actuator shaft to rotate at an angle when normally attracted; the control mechanism is provided with a cable (33) and a pulling mechanism (34) connected to one end of the cable (33), and the other end of the cable (33) is connected to the transmission member A (31) after being wound around the mounting seat (30); the pulling mechanism (34) tightens the cable (33) to drive the transmission member A (31) to rotate in the forward direction, and then the two driving parts (310) can drive the two transmission members B (32) to rotate in the forward direction to perform emergency start of the main contactor (1) and the angular contactor (2); the pulling mechanism (34) releases the cable (33) to cause the transmission member A (31) to rotate in the reverse direction and reset, and will not drive the transmission member B (32) to rotate.

2. The contactor mechanical emergency starting system according to claim 1, characterized in that: After the pulling mechanism (34) releases the cable (33), the arc block is located in the middle of the arc slot, and the difference between the center angle corresponding to the arc slot and the center angle corresponding to the arc block is at least twice the angle at which the main contactor (1) and the angular contactor (2) drive the actuator shaft to rotate when they are normally attracted.

3. The contactor mechanical emergency starting system according to claim 1, characterized in that: The driving part (310) is provided with the arc-shaped slot, and the transmission member B (32) is provided with the arc-shaped block.

4. The contactor mechanical emergency starting system according to claim 3 is characterized in that: The transmission member A (31) is further provided with a main body portion consisting of two parallel base plates (311) and two connecting portions (312) fixedly connected between the two base plates (311); the main body portion is sleeved on the mounting seat (30) and is rotatably connected to the mounting seat (30) via a rotating shaft (350); and 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 component A (31), the driving parts (310) are respectively provided on two opposite sides of the two base plates (311), and one of the connecting parts (312) is fixedly connected to the other end of the cable (33).

5. The contactor mechanical emergency starting system according to claim 4, characterized in that: The driving portion (310) is further provided with a receiving groove (3101) recessed on one side of the base plate (311), and the bottom of the receiving groove (3101) is provided with two symmetrical arc-shaped slot holes and a pin hole (3102) for the rotating shaft (350) to pass through in a tight fit; The transmission member B (32) is further provided with a connecting member (321) for fixedly connecting to the execution shaft, the end of the connecting member (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 symmetrical arc blocks are protruded from the end of the connecting member (321) facing away from the execution shaft; In addition, an avoidance hole (322) for avoiding the rotating shaft (350) is provided on the end of the connecting member (321) facing away from the execution shaft.

6. The contactor mechanical emergency starting system according to claim 4, 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 be wound around, and a receiving portion (302) fixedly connected to the base (300) and used to receive the rotating shaft (350) and the transmission member A (31); In addition, a support (360) is sleeved outside the receiving portion (302), and a travel switch (361) for sensing position information of the transmission member A (31) is fixedly arranged on the support (360).

7. The contactor mechanical emergency starting system according to claim 1, characterized in that: The pulling mechanism (34) comprises a sleeve (340), a first sleeve (341), a second sleeve (342), a pull rod (343), a handle (344) and a limiting assembly. The sleeve (340), the first sleeve (341) and the second sleeve (342) are coaxially connected and communicated in sequence, and the second sleeve (342) is provided with an inverted L-shaped track groove (3422) formed by connecting a slot section A (3420) and a slot section B (3421); one end of the pull rod (343) is movably inserted into the first sleeve (341) and is fixedly connected to one end of the pull cable (33) passing through the sleeve (340); 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 assembly is provided with a pull rod (343) movably inserted into the inverted L A limit screw (345) is inserted into the track groove (3422) and fixedly connected to the pull rod (343), and a spring member (346) is sleeved between the second sleeve (342) and the pull rod (343) and can provide elastic restoring force to the pull rod (343); when the handle (344) moves away from the second sleeve (342) under the action of an external force, the pull rod (343) can tighten the pull cable (33) until the limit screw (345) moves into the slot hole section B (3421) and the handle (344) is limited and stopped; and when the limit screw (345) is moved into the slot hole section A (3420) and the handle (344) moves toward the second sleeve (342) under the action of an external force, the pull rod (343) can release the pull cable (33).

8. The contactor mechanical emergency starting system according to claim 1, characterized in that: It also comprises a star contactor (4) and an interlocking mechanism (5), wherein the interlocking mechanism (5) is connected between the angular contactor (2) and the star contactor (4), and the interlocking mechanism (5) can enable one of the angular contactor (2) and the star contactor (4) to be in an engaged state while the other remains in an disconnected state.

9. The contactor mechanical emergency starting system according to claim 8, characterized in that: The interlocking mechanism (5) comprises a mounting plate (50) fixedly mounted on the housing of the star contactor (4) and two actuators mounted relatively and rotatably on a side of the mounting plate (50) facing away from the star contactor (4), the two actuators being capable of independently rotating under the drive of the angular contactor (2) and the star contactor (4), and when one of the two actuators rotates, one ends of the two actuators abut against each other to limit the position, thereby forming an interlocking relationship.

10. The contactor mechanical emergency starting system according to claim 9, characterized in that: The two actuators are defined as a first actuator (51) and a second actuator (52) respectively; The first actuator (51) is fixedly connected to the actuator shaft of the angular contactor (2); The interlocking mechanism (5) further comprises a linkage member (53), wherein the linkage member (53) comprises 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 portion (532) arranged on the mounting plate (50) and capable of elastically moving in an up-and-down direction under the drive of the actuator end of the star contactor (4), and the moving portion (532) is fixedly connected to the connecting ring (531), that is, the elastic movement of the moving portion (532) can drive the connecting ring (531), the connecting member (530) and the second actuator (52) to rotate together.

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