Dual-power change-over switch and power distribution cabinet thereof

Abstract

The invention relates to the technical field of change-over switches, in particular to a dual-power change-over switch and a power distribution cabinet thereof.The dual-power change-over switch comprises a switch shell, a gear shifting knob, an energy storage assembly and an electric contact blade, the switch shell is fixedly installed in the power distribution cabinet body, the gear shifting knob is arranged in the switch shell, and the energy storage assembly is in sliding connection with the gear shifting knob; a power source is arranged in the switch shell, two electric contact blades are symmetrically and rotationally installed in the switch shell, and the energy storage assembly enables the electric contact blades to make contact with the power source. The energy storage assembly stores energy through the gear shifting knob, and the circuit is quickly connected through the energy storage assembly during power supply switching, so that the situation that the switching speed is too low during manual power supply switching, and consequently, electric arcs generated in the power supply switching process affect equipment work and burn workers is avoided; the manual power switching speed of the dual-power change-over switch is improved, and the safety of switching operation is improved.

Description

Technical Field

[0001] The invention relates to the technical field of transfer switches, in particular to a dual power transfer switch and a power distribution cabinet thereof. Background Art

[0002] A dual power transfer switch refers to a system consisting of two independent power supplies, one of which is the main power supply and the other is the backup power supply. They are switched between by a transfer switch to ensure the power supply reliability of important loads. When one of the power supplies fails, the other power supply can bear all the loads. The dual power transfer switch is widely used in emergency power supply systems. It can automatically or manually switch the load circuit from one power supply to another based on the status of the power supply circuit, thereby maintaining the continuous and reliable operation of the load circuit. A type of dual power transfer switch has three working positions, namely, the first power supply position, the second power supply position, and the double split position that is disconnected from the first power supply and the second power supply at the same time. The double split position can meet the user's needs for delayed switching, safety maintenance, etc. The switching mechanism is an important component of the dual power transfer switch, which is used to receive manual or automatic driving force to perform the switching of the power supply between the three working positions. When manual switching is adopted, if the switching speed is slow, the arc generated when breaking the current will burn for a long time or cannot be extinguished, which will cause fire, burn the staff, burn the switch equipment and other hazards. Therefore, it is necessary for the switching mechanism to be able to achieve switching without human power to avoid safety accidents caused by the uncontrollable switching speed of the staff. The structures of the switching mechanisms independent of human power in the prior art are mostly complicated, resulting in high manufacturing costs, inconvenient operation and maintenance, and affecting the reliability of the dual power conversion switch.

[0003] In order to avoid the manual switching of the dual power conversion switch due to the slow switching speed, the safety accidents caused by the uncontrollable switching speed of the staff, the arc generated during the switching process affects the operation of the equipment and burns the staff, the invention patent with application number CN201810421035.0 provides a dual power conversion switch and its switching mechanism. The invention sets a switching component in the dual power conversion switch, and the switching component includes a drive disk, a drive rod, an actuator and an auxiliary mechanism. The drive disk has an arc-shaped drive groove, and the drive rod extends into the drive groove; and the auxiliary mechanism has a spring. The drive disk can receive external force and rotate. When the end of the drive groove does not contact the drive rod, the drive groove bypasses the drive rod. When the end of the drive groove contacts the drive rod, the drive groove pushes the drive rod to rotate through a first angle and causes the spring to deform. The deformation of the spring applies power to the switching component to increase the switching speed during the power switching. However, when the staff performs the power switching operation, the arc generated at the moment when the switching component is energized may also affect the staff, causing safety hazards.

[0004] Therefore, in order to avoid the safety accidents caused by the uncontrollable switching speed of the staff when manually switching the power of the dual power conversion switch, which may cause the arc generated during the power switching process to affect the operation of the equipment and burn the staff, a dual power conversion switch and its distribution cabinet are proposed. Summary of the invention

[0005] The object of the present invention is to provide a dual power conversion switch and its distribution cabinet, in order to avoid the safety accidents caused by the uncontrollable switching speed of the staff when the dual power conversion switch is manually switched too slowly, resulting in the arc generated in the process of switching the power affecting the operation of the equipment and burning the staff, by arranging a power storage component inside the dual power conversion switch, after the distribution cabinet door is opened, the power storage component performs power storage work when the staff adjusts the gear knob, and in the process of closing the distribution cabinet door, the trigger component releases the power storage component, so as to achieve the purpose of quickly switching the dual power working position, improve the manual power switching speed of the dual power conversion switch, and improve the safety of the switching operation during the power switching process.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A dual power conversion switch, comprising a switch housing, a gear adjustment knob, an energy storage component, and an electric contact piece, wherein the gear adjustment knob is arranged inside the switch housing, the energy storage component is slidably connected to the gear adjustment knob, a first contact and a second contact are arranged inside the switch housing, two electric contact pieces are symmetrically installed inside the switch housing for rotation, a buffer spring is arranged inside the switch housing, and the two ends of the buffer spring are respectively connected to the electric contact piece and the inner wall of the switch housing, the energy storage component comprises a push plate, an energy storage plate, an energy storage spring, a limit plate, and a limit spring, two push plates are symmetrically installed inside the switch housing for sliding, and the two push plates and the inner wall of the switch housing are connected to the push plate. The gear shift knob is slidably connected, and the two energy storage plates are slidably installed on the two push plates respectively. A trapezoidal block 1 is fixedly installed on the energy storage plate, and a pressing rod is fixedly installed on the end of the energy storage plate, and the pressing rod is located above the electric contact piece. The two ends of the energy storage spring are respectively connected to the pushing plate and the energy storage plate, and the limit plate is rotatably installed inside the switch housing, and a trapezoidal block 2 is fixedly installed on the limit plate, and the vertical surface of the trapezoidal block 1 faces the vertical surface of the trapezoidal block 2, and the two ends of the limit spring are respectively connected to the inner wall of the switch housing and the limit plate, and a trigger component is provided on the power distribution cabinet, and the trigger component contacts the limit plate to cause the energy storage plate to slide.

[0008] By slidingly connecting the shift knob and the push plate, the shift knob has three gears corresponding to the three working positions of the dual power conversion switch. When the shift knob is rotated to the left, it is the first power supply position of the dual power conversion switch, and when the shift knob is rotated to the right, it is the second power supply position of the dual power conversion switch. When the pointer of the shift knob is in the middle, it is the double-split position in which the first power supply and the second power supply are disconnected at the same time. The first contact is set at the lower left position inside the switch housing, and the second contact is set at the lower right position inside the switch housing. When the shift knob is rotated to the left, the push plate on the right moves upward, the trapezoidal block 1 on the right energy storage plate moves away from the trapezoidal block 2 on the limit plate, and the push plate on the left moves downward. The energy storage plate on the left is parallel to the upper surface of the limit plate on the left, and the vertical surface of the trapezoidal block 1 on the energy storage plate is in contact with the vertical surface of the trapezoidal block 2 on the limit plate. When the push plate moves downward, the limit plate limits the movement of the energy storage plate in the vertical direction, and the energy storage spring gradually moves during the continuous rotation of the shift knob. The cam is compressed, and the energy storage plate and the push plate slide relative to each other. When the gear adjustment knob stops rotating, the energy storage component completes the energy storage work, and the limit plate is rotated by the trigger component. The limit spring is compressed, and the vertical surface of the trapezoidal block one on the left energy storage plate is separated from the vertical surface of the trapezoidal block two on the limit plate. The energy storage spring extends, giving the energy storage plate a downward thrust, and the energy storage plate moves downward, and the pressing rod contacts the electric contact piece and applies downward pressure on the electric contact piece. The buffer spring is compressed, and the electric contact piece is connected to the first contact point. At this time, the dual power conversion switch is in the position of connecting the first contact. The energy storage component enables the circuit to be quickly connected when the power is switched, avoiding the manual switching speed of the dual power conversion switch being too slow, and the safety accidents caused by the uncontrollable switching speed of the staff. The arc generated during the power switching process affects the equipment operation and burns the staff, thereby improving the manual power switching speed of the dual power conversion switch and improving the safety of the switching operation during the power switching process.

[0009] Preferably, the trigger assembly comprises a trigger rod and an inclined surface, the end of the trigger rod is provided with an inclined surface, two square holes are symmetrically opened on the switch housing, and the trigger rod passes through the square holes and contacts the limit plate.

[0010] By setting a trigger component, when the trigger rod passes through the square hole and enters the switch housing, the inclined surface and the upper surface of the limit plate slide relative to each other, and the trigger rod causes the limit plate to rotate to release the energy storage component. When the distribution cabinet door is closed, the dual power conversion switch will be in the first contact position, avoiding arc burns to the staff during the power switching process, and further improving the safety of the power switching operation.

[0011] Preferably, a gear is provided on the shift knob, and corresponding racks are provided on the two push plates. When the shift knob rotates unidirectionally, one push plate moves upward and the other push plate moves downward. A locking assembly is provided in the switch housing, and the locking assembly limits the movement of the energy storage plate in the vertical direction.

[0012] By setting the gear rack cooperation between the gear adjustment knob and the push plate, the movement of the push plate is more stable when adjusting the working position of the dual power conversion switch, and the energy storage component can store energy when the gear adjustment knob is turned to any position, making the working process of the energy storage component smoother.

[0013] Preferably, the locking assembly includes a locking rod, a thrust spring, a sliding rod, and a connecting rod. Two sliding rods are symmetrically rotatably installed on the shift knob. A connecting rod is rotatably installed on the end of the sliding rod. A thrust spring is fixedly installed on the end of the connecting rod. The other end of the thrust spring is fixedly connected to the locking rod. A circular hole is provided on the push plate, and the locking rod is located inside the circular hole. A locking hole is provided at the bottom of the energy storage plate. When the locking rod is inserted into the locking hole, the locking rod limits the movement of the energy storage plate in the vertical direction.

[0014] By arranging a locking assembly inside the switch housing, the sliding rod can slide within a limited position at the end of the gear shift knob. When the energy storage assembly has not yet worked, the energy storage plate and the push plate remain relatively stationary, and the horizontal position of the locking hole on the energy storage plate is higher than the circular hole on the push plate. When the gear shift knob is rotated to the left to shift gears, the sliding rod on the left slides on the gear shift knob, and the connecting rod rotates on the sliding rod. During the rotation of the gear shift knob, a thrust force is applied to the connecting rod on both sides, the locking rod moves in the circular hole, the thrust spring is compressed, and the locking rod abuts against the bottom of the energy storage plate. When the energy storage assembly completes energy storage, the trigger assembly releases the energy storage assembly, and the energy storage spring pushes the locking rod to release the energy storage assembly. When the locking lever is in a locked position, the spring will pull the locking lever out of the locking hole and the locking lever will be pulled out of the locking hole to unlock the energy storage plate. The locking assembly prevents the switch housing from vibrating when it is affected by external force, causing the pressing lever to detach from the electric contact piece, resulting in accidental disconnection of the circuit. This improves the working stability of the dual power conversion switch, prevents the electric contact piece from generating an arc due to unstable contact, and prevents the arc burning from affecting the equipment, thereby improving the service life of the dual power conversion switch.

[0015] Preferably, a rectangular block is provided at the end of the gear shift knob, the rectangular block is made of elastic rubber material, a tooth-shaped groove is provided on the inner wall of the switch housing, and the rectangular block is located inside the tooth-shaped groove.

[0016] A rectangular block made of elastic rubber material is arranged at the end of the gear shift knob, and the rectangular block is stuck in the tooth-shaped groove. When the staff rotates the gear shift knob, the rectangular block undergoes elastic deformation and is squeezed from the current tooth groove to the adjacent tooth groove. The tooth-shaped groove limits the movement of the rectangular block, thereby preventing the gear shift knob from rotating in the opposite direction due to the reaction force of the energy storage spring during rotation, thereby improving the working stability of the energy storage assembly.

[0017] Preferably, the angle between the axis of the circular hole and the vertical line of the push plate is 30°, the angle between the axis of the locking hole and the vertical line of the energy storage plate is 30°, the locking rod is made of elastic rubber material, and the cross-sectional diameter of the locking rod is 1-2 mm larger than the diameter of the locking hole.

[0018] By setting the angle between the axis of the circular hole and the locking hole and the axis of the push plate to 30°, when the locking rod is obliquely inserted into the locking hole, the friction between the locking rod and the locking hole and the pulling force applied by the energy storage spring to the energy storage plate are balanced, thereby strengthening the locking effect of the locking assembly on the energy storage plate. The cross-sectional diameter of the locking rod is 1-2mm larger than the diameter of the locking hole. The locking rod is squeezed and deformed and inserted into the locking hole, thereby increasing the friction between the locking rod and the locking hole and improving the working stability of the dual power conversion switch.

[0019] Preferably, a slide groove is provided inside the pushing plate, the slide groove passes through the side wall of one end of the pushing plate, the bottom of the energy storage plate is arranged in an I-shape, and the bottom of the energy storage plate is slidably installed in the slide groove.

[0020] By opening a slide groove inside the push plate, the bottom of the energy storage plate is set to an I-shape to slide with the slide groove. The slide groove provides a positioning guide for the energy storage plate and limits the movement of the energy storage plate in the horizontal direction, thereby preventing the energy storage plate from moving left and right due to the influence of the thrust spring, thereby improving the working stability of the energy storage assembly.

[0021] A power distribution cabinet equipped with the above-mentioned dual power conversion switch is characterized in that:

[0022] The switch housing is fixedly installed inside the power distribution cabinet, and a power distribution cabinet door is rotatably installed on the power distribution cabinet. The two trigger long rods are vertically fixedly installed inside the power distribution cabinet door. The limit plate is located in the square hole. The trigger long rod and the limit plate are in the same horizontal plane. When the shift knob is used to rotate and adjust the working position of the conversion switch, the trapezoidal block one is located above the trapezoidal block two, and the trapezoidal block two will limit the movement of the energy storage plate in the vertical direction. The energy storage spring is compressed, and the power distribution cabinet door is in an open state at this time. After the working position switching is completed, the power distribution cabinet door is closed, and the trigger long rod passes through the square hole and is located inside the switch housing. The inclined surface The trigger rod slides relative to the upper surface of the limit plate, and the trigger long rod squeezes the limit plate to make the limit plate rotate, the limit spring is compressed, the trapezoidal block one separates from the trapezoidal block two, the energy storage spring extends, and the pressing rod applies downward pressure to the electric contact piece, and the electric contact piece connects the circuit. When the staff adjusts the gear position, the electric contact piece and the power supply are not yet connected, and the energy storage component is in an energy storage state. When the distribution cabinet door is closed, the trigger long rod makes the limit plate rotate, the energy storage component is released, and the pressing rod presses the electric contact piece downward to connect the circuit. The protection of the distribution cabinet door prevents the electric arc generated when the circuit is connected from burning the staff, thereby improving the operational safety of manual switching of power supply.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The energy storage plate is pushed by the energy storage spring, and the pressing rod on the energy storage plate quickly presses down the electric contact piece to connect the circuit, avoiding the slow switching speed when manually switching the power of the dual power conversion switch, and the safety accidents caused by the uncontrollable switching speed of the staff. The arc generated during the power switching process affects the operation of the equipment and burns the staff. The manual power switching speed of the dual power conversion switch is improved, and the safety of the switching operation is improved during the power switching process.

[0025] 2. By setting a trigger component on the distribution cabinet door, the trigger component will release the energy storage board only when the distribution cabinet door is closed. The protection of the distribution cabinet door prevents the arc generated when the circuit is connected from burning the staff, thereby improving the operational safety of manual power switching.

[0026] 3. By setting a locking component to limit the movement of the energy storage plate in the vertical direction, the switch housing is prevented from vibrating when affected by external force, causing the pressing rod to detach from the electric contact piece, causing the circuit to be accidentally disconnected, thereby improving the working stability of the dual power conversion switch, preventing the electric contact piece from unstable contact and generating arcs, and arc burning affecting the equipment, thereby increasing the service life of the dual power conversion switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the appearance structure of the present invention;

[0028] Figure 2 It is a schematic diagram of the appearance of the conversion switch of the present invention;

[0029] Figure 3 It is a schematic diagram of the structure of the conversion switch of the present invention;

[0030] Figure 4 It is a cutaway front view of the transfer switch of the present invention;

[0031] Figure 5 It is a schematic diagram of the locking assembly structure of the present invention;

[0032] Figure 6 It is a schematic diagram of the working of the energy storage component of the present invention;

[0033] Figure 7 is a schematic diagram of the first contact position of the present invention;

[0034] Figure 8 It is a schematic diagram of the working of the locking assembly of the present invention.

[0035] In the figure: 1. distribution cabinet; 101. distribution cabinet door; 2. switch housing; 21. first contact; 22. second contact; 23. square hole; 24. toothed groove; 3. gear adjustment knob; 31. gear; 32. rectangular block; 4. energy storage assembly; 41. push plate; 411. rack; 412. round hole; 413. slide groove; 42. energy storage plate; 421. trapezoidal block one; 422. pressing rod; 423. locking hole; 43. energy storage spring; 44. limit plate; 441. trapezoidal block two; 45. limit spring; 5. electric contact piece; 6. buffer spring; 7. trigger assembly; 71. trigger long rod; 72. inclined surface; 8. locking assembly; 81. locking rod; 82. thrust spring; 83. sliding rod; 84. connecting rod. DETAILED DESCRIPTION

[0036] See also Figures 1 to 8 The present invention provides a dual power conversion switch, and the technical solution is as follows:

[0037] The power distribution cabinet 1 is arranged in a rectangular shape and has a rectangular inner cavity. A power distribution cabinet door 101 is rotatably installed on the power distribution cabinet 1. The switch housing 2 is detachably installed inside the power distribution cabinet 1 by means of bolts and nuts. The gear-adjusting knob 3 is arranged inside the switch housing 2. An energy storage component 4 is arranged inside the switch housing 2. The energy storage component 4 is slidably connected to the gear-adjusting knob 3. A first contact 21 and a second contact 22 are installed inside the switch housing 2. The first contact 21 is arranged at the lower left position inside the switch housing 2, and the second contact 22 is arranged at the lower right position inside the switch housing 2. The gear-adjusting knob 3 has three gears, corresponding to the three working positions of the dual power conversion switch. When the gear-adjusting knob 3 is rotated to the left, it is the first power-on position of the dual power conversion switch. The gear-adjusting knob 3 is rotated to the left, and the gear-adjusting knob 3 is rotated to the right, and the gear-adjusting knob 3 is rotated to the left ... When the knob 3 is rotated to the right, it is the second power supply position of the dual power conversion switch. When the pointer of the gear adjustment knob 3 is in the middle, it is the double-open position in which the first power supply and the second power supply are disconnected at the same time. The double-open position can meet the user's needs for delayed switching, safety maintenance, etc. Two electric contact pieces 5 are symmetrically installed in the switch housing 2 for rotation. A buffer spring 6 is arranged under the electric contact piece 5. The other end of the buffer spring 6 is fixedly connected to the inner wall of the switch housing 2. The energy storage component 4 includes a push plate 41, an energy storage plate 42, an energy storage spring 43, a limit plate 44, and a limit spring 45. Two push plates 41 are symmetrically installed in the switch housing 2 for sliding movement. The two push plates 41 are slidably connected to the gear adjustment knob 3. The two energy storage plates 42 are slidably installed on the two On the push plate 41, a trapezoidal block 1 421 is fixedly installed on the energy storage plate 42, a pressing rod 422 is fixedly installed on the end of the energy storage plate 42, and the pressing rod 422 is located above the electric contact piece 5. The two ends of the energy storage spring 43 are respectively connected to the push plate 41 and the energy storage plate 42, and the limit plate 44 is rotatably installed inside the switch housing 2. A trapezoidal block 2 441 is fixedly installed on the limit plate 44, and the vertical surface of the trapezoidal block 1 421 faces the vertical surface of the trapezoidal block 2 441. The two ends of the limit spring 45 are respectively connected to the inner wall of the switch housing 2 and the limit plate 44, and a trigger component 7 is provided on the distribution cabinet door 101. The trigger component 7 contacts the limit plate 44 to make the energy storage plate 42 slide. When the gear adjustment knob 3 rotates to the left, the push plate 41 on the right moves upward, and the energy storage plate 42 on the right is turned to the left. The trapezoidal block 1 421 on the plate 42 is away from the trapezoidal block 2 441 on the limit plate 44, and the push plate 41 on the left moves downward. The energy storage plate 42 on the left is parallel to the upper surface of the limit plate 44 on the left. The vertical surface of the trapezoidal block 1 421 on the energy storage plate 42 fits with the vertical surface of the trapezoidal block 2 441 on the limit plate 44. When the push plate 41 moves downward, the limit plate 44 limits the movement of the energy storage plate 42 in the vertical direction. During the continuous rotation of the gear adjustment knob 3, the energy storage spring 43 is gradually compressed, and the energy storage plate 42 and the push plate 41 slide relative to each other. When the gear adjustment knob 3 stops rotating, the energy storage component 4 completes the energy storage work. After the distribution cabinet door 101 is closed, the trigger component 7 causes the limit plate 44 to rotate, and the limit spring 45 is compressed.The vertical surface of the trapezoidal block 1 421 on the left energy storage plate 42 is separated from the vertical surface of the trapezoidal block 2 441 on the limit plate 44, and the energy storage spring 43 is extended, giving the energy storage plate 42 a downward thrust, and the energy storage plate 42 moves downward, and the pressing rod 422 contacts the electric contact piece 5 and applies downward pressure to the electric contact piece 5, and the buffer spring 6 is compressed, and the electric contact piece 5 is connected to the first contact 21. At this time, the dual power conversion switch is in the position of connecting the first contact 21. The energy storage component 4 enables the circuit to be quickly connected when the power is switched, avoiding the manual switching speed of the dual power conversion switch when the power is switched too slowly, and the safety accidents caused by the uncontrollable switching speed of the staff, resulting in the arc generated during the power switching process affecting the equipment operation and burning the staff, thereby improving the manual power switching speed of the dual power conversion switch and improving the safety of the switching operation during the power switching process.

[0038] As an embodiment of the present invention, refer to Figures 1 to 8The trigger assembly 7 includes a trigger rod 71 and an inclined surface 72. Two trigger rods 71 ​​are vertically fixedly installed on the distribution cabinet door 101. The ends of the trigger rods 71 ​​are provided with inclined surfaces 72. Two square holes 23 are symmetrically provided on the switch housing 2. When the distribution cabinet door 101 is closed, the trigger rod 71 passes through the square holes 23 and enters the switch housing 2. The inclined surface 72 slides relative to the upper surface of the limit plate 44. The trigger rod 71 causes the limit plate 44 to rotate, releasing the energy storage assembly 4. When the distribution cabinet door 101 is closed, the dual power conversion switch Only then will it be in the first power-on position, so as to avoid the arc generated during the power switching process from burning the staff, and further improve the safety of the power switching operation; a slide groove 413 is provided inside the push plate 41, and the slide groove 413 passes through the side wall of one end of the push plate 41, and the bottom of the energy storage plate 42 is set to be I-shaped, and the bottom of the energy storage plate 42 is slidably installed in the slide groove 413, and the slide groove 413 provides a positioning guide for the energy storage plate 42, and limits the movement of the energy storage plate 42 in the horizontal direction, so as to improve the working stability of the energy storage assembly 4; a gear 31 is provided on the gear shift knob 3 , corresponding racks 411 are provided on the two push plates 41, when the gear knob 3 rotates in one direction, one push plate 41 moves upward, and the other push plate 41 moves downward, a locking assembly 8 is provided in the switch housing 2, and the locking assembly 8 limits the movement of the energy storage plate 42 in the vertical direction, by setting the gear 31 and the rack 411 to cooperate between the gear knob 3 and the push plate 41, the movement of the push plate 41 is more stable when adjusting the working position of the dual power conversion switch, and the energy storage assembly 4 can store energy when the gear knob 3 is turned to any position, so that the energy storage assembly 4 The working process is smoother; a rectangular block 32 is provided at the end of the gear shifting knob 3, and the rectangular block 32 is made of elastic rubber material. A tooth-shaped groove 24 is provided on the inner wall of the switch housing 2, and the rectangular block 32 is located inside the tooth-shaped groove 24. When the staff rotates the gear shifting knob 3, the rectangular block 32 undergoes elastic deformation and is squeezed from the current tooth groove to the adjacent tooth groove. The tooth-shaped groove 24 limits the movement of the rectangular block 32, thereby preventing the gear shifting knob 3 from being subjected to the reaction force of the energy storage spring 43 during rotation, causing the gear shifting knob 3 to rotate in the opposite direction, thereby improving the working stability of the energy storage component 4.

[0039] As an embodiment of the present invention, refer to Figures 4 to 8The locking assembly 8 includes a locking rod 81, a thrust spring 82, a sliding rod 83, and a connecting rod 84. Two sliding rods 83 are symmetrically rotatably installed on the gear adjustment knob 3. The sliding rod 83 can slide at the end of the gear adjustment knob 3. A connecting rod 84 is rotatably installed at the end of the sliding rod 83. A thrust spring 82 is fixedly installed at the end of the connecting rod 84. The other end of the thrust spring 82 is fixedly connected to the locking rod 81. A circular hole 412 is opened on the push plate 41. The locking rod 81 is located inside the circular hole 412. A locking hole 423 is opened at the bottom of the push plate. When the locking rod 81 is inserted into the locking hole 423, the locking rod 81 limits the movement of the energy storage plate 42 in the vertical direction. When the energy storage assembly 4 is not working, the energy storage plate 42 The locking hole 423 on the energy storage plate 42 remains relatively still with the push plate 41, and the horizontal position of the locking hole 423 on the energy storage plate 42 is higher than the circular hole 412 on the push plate 41. When the gear-shifting knob 3 is rotated to the left to shift gears, the sliding rod 83 on the left slides on the gear-shifting knob 3, and the connecting rod 84 rotates on the sliding rod 83. During the rotation of the gear-shifting knob 3, a thrust to both sides is applied to the connecting rod 84, and the locking rod 81 moves in the circular hole 412, and the thrust spring 82 is compressed, and the locking rod 81 abuts against the bottom of the energy storage plate 42. When the energy storage assembly 4 completes energy storage, the trigger assembly 7 releases the energy storage assembly 4, and the energy storage plate 42 slides downward on the push plate 41 under the thrust of the energy storage spring 43. When the axis of the locking hole 423 is aligned with the axis of the locking hole 423, the locking rod 81 abuts against the bottom of the energy storage plate 42. When the axes of the circular holes 412 coincide, the thrust spring 82 extends, the locking rod 81 is inserted into the locking hole 423, and the locking rod 81 limits the movement of the energy storage plate 42 in the vertical direction. When the gear shift knob 3 is rotated in the opposite direction, the gear shift knob 3 will pull the locking rod 81 out of the locking hole 423 to complete the unlocking of the energy storage plate 42. The locking assembly 8 prevents the switch housing 2 from vibrating when it is affected by external force, causing the pressing rod 422 to separate from the electric contact piece 5, causing the circuit to be accidentally disconnected, thereby improving the working stability of the dual power conversion switch, preventing the electric contact piece 5 from unstable contact and generating an arc, and the arc burning affecting the equipment, thereby improving the service life of the dual power conversion switch; the axis of the circular hole 412 is perpendicular to the push plate 41 The line angle is 30°, the line angle between the axis of the locking hole 423 and the vertical line of the energy storage plate 42 is 30°, the locking rod 81 is made of elastic rubber material, the cross-sectional diameter of the locking rod 81 is larger than the diameter of the locking hole 423 by 1 mm, when the locking rod 81 is obliquely inserted into the locking hole 423, the friction between the locking rod 81 and the locking hole 423 and the pulling force applied by the energy storage spring 43 to the energy storage plate 42 are balanced, and the locking effect of the locking assembly 8 on the energy storage plate 42 is strengthened. The cross-sectional diameter of the locking rod 81 is larger than the locking hole 423, so that the locking rod 81 is squeezed and deformed to be inserted into the locking hole 423, the friction between the locking rod 81 and the locking hole 423 is increased, and the working stability of the dual power conversion switch is improved;When the shift knob 3 is used to rotate and adjust the working position of the conversion switch, the trapezoidal block 1 421 is located above the trapezoidal block 2 441, and the trapezoidal block 2 441 will limit the movement of the energy storage plate 42 in the vertical direction, and the energy storage spring 43 is compressed. At this time, the distribution cabinet door 101 is in an open state. After the working position is switched, the distribution cabinet door 101 is closed, and the trigger rod 71 passes through the square hole 23 and is located inside the switch housing 2. The inclined surface 72 slides relative to the upper surface of the limit plate 44, and the trigger rod 71 squeezes the limit plate 44 to make the limit plate 44 rotate, and the limit spring 45 is compressed, and the trapezoidal block 1 421 is separated from the trapezoidal block 2. 441, the energy storage spring 43 is extended, and the pressing rod 422 applies downward pressure to the electric contact piece 5, and the electric contact piece 5 connects the circuit. By setting the linkage between the distribution cabinet door 101 and the dual power conversion switch, the electric contact piece 5 is not connected to the power supply when the staff adjusts the gear position, and the energy storage component 4 is in the energy storage state. When the distribution cabinet door 101 is closed, the long rod 71 is triggered to rotate the limit plate 44, and the energy storage component 4 is released. The pressing rod 422 presses the electric contact piece 5 downward to connect the circuit. The protection of the distribution cabinet door 101 prevents the arc generated when the circuit is connected from burning the staff, thereby improving the safety of manual power switching operation. ;

[0040] The working principle of the dual power conversion switch and its distribution cabinet: before performing manual power switching, first adjust the shift knob 3 to the dual position. At this time, the circuits of the first power supply and the second power supply are both disconnected. When the dual power conversion switch needs to connect the first contact 21, manually rotate the shift knob 3 to the left, and the push plate 41 on the left moves downward. At this time, the energy storage plate 42 and the limit plate 44 are in a parallel state, and the locking rod 81 moves in the circular hole 412. The thrust spring 82 is compressed, and the locking rod 81 abuts against the bottom of the energy storage plate 42. The vertical surface of the trapezoidal block 1 421 on the energy storage plate 42 is in contact with the vertical surface of the trapezoidal block 2 441 on the limit plate 44. When the push plate 41 moves downward, the limit plate 44 limits the movement of the energy storage plate 42 in the vertical direction. During the continuous rotation of the shift knob 3, the energy storage spring 43 is gradually compressed, and the energy storage plate 42 and the push plate 41 are in phase. As for sliding, when the shift knob 3 stops rotating, the energy storage assembly 4 completes the energy storage work, and after the distribution cabinet door 101 is closed, the trigger rod 71 passes through the square hole 23 and is located inside the switch housing 2, and the inclined surface 72 slides relative to the upper surface of the limit plate 44, and the trigger rod 71 squeezes the limit plate 44 to rotate the limit plate 44, and the limit spring 45 is compressed, and the trapezoidal block 1 421 is separated from the trapezoidal block 2 441, and the energy storage spring 43 is extended. Under the thrust of the energy storage spring 43, the energy storage plate 42 slides downward on the push plate 41, and when the axis of the locking hole 423 coincides with the axis of the circular hole 412, the thrust spring 82 is extended, and the locking rod 81 is inserted into the locking hole 423, and the locking rod 81 limits the movement of the energy storage plate 42 in the vertical direction, and the pressing rod 422 applies downward pressure to the electric contact sheet 5, and the electric contact sheet 5 fits with the first contact 21 to connect the circuit.

[0041] A specific embodiment of the present invention is described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above described embodiment. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments without departing from the principles and ideas of the present invention should still fall within the scope of protection of the present invention.

Claims

1. A dual power conversion switch, characterized in that: The invention comprises a switch housing (2), a gear-shifting knob (3), an energy storage component (4), and an electric contact piece (5). The gear-shifting knob (3) is arranged inside the switch housing (2). The energy storage component (4) is slidably connected to the gear-shifting knob (3). A first contact point (21) and a second contact point (22) are arranged inside the switch housing (2). Two electric contact pieces (5) are symmetrically rotatably mounted inside the switch housing (2). A buffer spring (6) is arranged inside the switch housing (2). Two ends of the buffer spring (6) are respectively connected to the electric contact piece (5) and the inner wall of the switch housing (2). The energy storage component (4) comprises a push plate (41), an energy storage plate (42), an energy storage spring (43), a limit plate (44), and a limit spring (45). Two push plates (41) are symmetrically slidably mounted inside the switch housing (2). The two push plates (41) are slidably connected to the gear-shifting knob (3). The two energy storage plates (42) are respectively slidably mounted on the two push plates (41); a trapezoidal block 1 (421) is fixedly mounted on the energy storage plate (42); a pressing rod (422) is fixedly mounted on the end of the energy storage plate (42); the pressing rod (422) is located above the electric contact piece (5); the two ends of the energy storage spring (43) are respectively connected to the push plate (41) and the energy storage plate (42); the limit plate (44) is rotatably mounted inside the switch housing (2); a trapezoidal block 2 (441) is fixedly mounted on the limit plate (44); the vertical surface of the trapezoidal block 1 (421) faces the vertical surface of the trapezoidal block 2 (441); the two ends of the limit spring (45) are respectively connected to the inner wall of the switch housing (2) and the limit plate (44); a trigger component (7) is arranged on the power distribution cabinet (1); the trigger component (7) contacts the limit plate (44) to cause the energy storage plate (42) to slide.

2. A dual power conversion switch according to claim 1, characterized in that: The trigger assembly (7) comprises a trigger rod (71) and an inclined surface (72); the end of the trigger rod (71) is provided with an inclined surface (72); two square holes (23) are symmetrically provided on the switch housing (2); the trigger rod (71) passes through the square holes (23) and contacts the limit plate (44).

3. A dual power conversion switch according to claim 1, characterized in that: The gear shift knob (3) is provided with a gear (31), and the two push plates (41) are provided with corresponding racks (411); when the gear shift knob (3) rotates in one direction, one push plate (41) moves upward and the other push plate (41) moves downward; a locking assembly (8) is provided in the switch housing (2), and the locking assembly (8) limits the movement of the energy storage plate (42) in the vertical direction.

4. A dual power conversion switch according to claim 3, characterized in that: The locking assembly (8) comprises a locking rod (81), a thrust spring (82), a sliding rod (83), and a connecting rod (84); two sliding rods (83) are symmetrically rotatably mounted on the shift knob (3); a connecting rod (84) is rotatably mounted on the end of the sliding rod (83); a thrust spring (82) is fixedly mounted on the end of the connecting rod (84); the other end of the thrust spring (82) is fixedly connected to the locking rod (81); a circular hole (412) is provided at the bottom of the push plate (41); the locking rod (81) is located inside the circular hole (412); a locking hole (423) is provided on the energy storage plate (42); when the locking rod (81) is inserted into the locking hole (423), the locking rod (81) limits the movement of the energy storage plate (42) in the vertical direction.

5. A dual power conversion switch according to claim 3, characterized in that: A rectangular block (32) is provided at the end of the gear shift knob (3), and the rectangular block (32) is made of elastic rubber material. A tooth-shaped groove (24) is provided on the inner wall of the switch housing (2), and the rectangular block (32) is located inside the tooth-shaped groove (24).

6. A dual power conversion switch according to claim 4, characterized in that: The angle between the axis of the circular hole (412) and the vertical line of the push plate (41) is 30°, the angle between the axis of the locking hole (423) and the vertical line of the energy storage plate (42) is 30°, the locking rod (81) is made of elastic rubber material, and the cross-sectional diameter of the locking rod (81) is 1-2 mm larger than the diameter of the locking hole (423).

7. A dual power conversion switch according to claim 3, characterized in that: A slide groove (413) is provided inside the pushing plate (41), and the slide groove (413) passes through a side wall at one end of the pushing plate (41). The bottom of the energy storage plate (42) is arranged in an I-shape, and the bottom of the energy storage plate (42) is slidably installed in the slide groove (413).

8. A power distribution cabinet equipped with the dual power conversion switch according to any one of claims 1 to 7, characterized in that: The invention comprises a power distribution cabinet (1) and a power distribution cabinet door (101), wherein the switch housing (2) is fixedly mounted inside the power distribution cabinet (1), the power distribution cabinet door (101) is rotatably mounted on the power distribution cabinet (1), two triggering long rods (71) are vertically fixedly mounted inside the power distribution cabinet door (101), the limiting plate (44) is located in a square hole (23), the triggering long rod (71) and the limiting plate (44) are located in the same horizontal plane, and when the power distribution cabinet door (101) is closed, the triggering long rod (71) passes through the square hole (23) and is located inside the switch housing (2), the triggering long rod (71) causes the limiting plate (44) to rotate, the energy storage spring (43) is extended, and the pressing rod (422) applies downward pressure to the electric contact piece (5), and the electric contact piece (5) is fitted with the contact point to connect the circuit.

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