Inertia locking device for spring operating mechanism and locking system thereof

Abstract

The invention discloses an inertia locking device for a spring operating mechanism and a lock catch system of the inertia locking device, and the inertia locking device comprises an electromagnetic small plunger latch mounting plate which provides a rotary supporting foundation for an electromagnetic small plunger latch; the inertia locking block is eccentrically and rotationally arranged on one side of the electromagnetic small plunger latch mounting plate and located above the pushed rod, and the gravity center deflection end of the inertia locking block is provided with a hook part for hooking and clamping the pushed rod; one end of the spring is connected with the electromagnetic small plunger latch mounting plate, the other end of the spring is connected to the gravity center deflection end of the inertia locking block, the spring is used for resetting after the inertia locking block actively controls the action, and the electromagnetic small plunger latch and the electromagnetic small plunger latch mounting plate are impacted by an operating mechanism to vibrate during opening and closing actions; the bent hook part of the inertia locking block locks the pushed rod based on the inertia lagging effect so as to prevent maloperation of the small electromagnetic plunger latch, maloperation of the spring operating mechanism for the high-voltage circuit breaker can be effectively avoided in cooperation with a locking system of the inertia locking device, and normal operation of a high-voltage switch and a power grid is guaranteed.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of operating control of high-voltage switch driving mechanisms, and particularly relates to an inertia locking device for a spring operating mechanism and a locking system thereof. BACKGROUND

[0002] High-voltage switch GIS is a key equipment in the field of power transmission and transformation. With the rapid development of the power industry, the use of GIS products is increasing. The spring operating mechanism is one of the main driving mechanisms of GIS. However, during energy storage and switching, the locking system is prone to malfunction due to vibration impact, causing GIS fault operation. The spring mechanism of high-voltage switch GIS has a large operating force, and the overall vibration acceleration of the mechanism during switching operation can reach several thousand or even tens of thousands of g. The impact of the transmission system on the lock will also cause large deformation and shaking of the lock. Some parts of the locking system have a rotational degree of freedom (such as the small latch of the electromagnet), which will deviate from the designed position under the action of impact and vibration, causing malfunction. Currently, springs and torsional springs are mainly used to limit the deviation of the small latch of the electromagnet after impact and vibration. However, when the spring force is small, the effect is not obvious, and when the spring force is large, it will cause an increase in the switching time and insufficient thrust of the electromagnet. Therefore, there is a lack of effective methods to suppress the deviation of the small latch of the electromagnet.

[0003] The spring mechanism of high-voltage switch GIS has a large operating force, and the overall vibration acceleration of the mechanism during switching operation can reach several thousand or even tens of thousands of g. The impact of the transmission system on the lock will also cause large deformation and shaking of the lock. Some parts of the locking system have a rotational degree of freedom (such as the small latch of the electromagnet), which will deviate from the designed position under the action of impact and vibration, causing malfunction. Currently, springs and torsional springs are mainly used to limit the deviation of the small latch of the electromagnet after impact and vibration. However, when the spring force is small, the effect is not obvious, and when the spring force is large, it will cause an increase in the switching time and insufficient thrust of the electromagnet. Therefore, there is a lack of effective methods to suppress the deviation of the small latch of the electromagnet.

[0004] The main reason for the malfunction is the insufficient stiffness of the lock support. The impact force on the lock system can reach tens of thousands of Newton. The original support is a cantilever structure with insufficient stiffness, which is easily deformed elastically under impact. The small latch installed on the support has a rotational degree of freedom. When the support is elastically deformed and vibrates greatly, the small latch is prone to rotate and shake, causing the small latch to deviate from the designed position and fail to stop the primary latch, which is a major cause of the malfunction of the locking system.

[0005] Therefore, how to provide an inertia locking device for a spring operating mechanism and a locking system thereof is a problem that needs to be solved by those skilled in the art. SUMMARY

[0006] Therefore, the application provides a spring operating mechanism inertia locking device and a locking system thereof, which are simple in structure, high in universality and reliability, and can be applied in high-voltage and strong electromagnetic environment.

[0007] In order to achieve the above-mentioned purpose, the application adopts the following technical scheme: a spring operating mechanism inertia locking device, which is used for a push rod of an electromagnetic small latch used for limiting the opening and closing action state of the spring operating mechanism, and comprises: an electromagnetic small latch mounting plate, which provides a rotating support base for the electromagnetic small latch; an inertia locking block, which is eccentrically arranged on one side of the electromagnetic small latch mounting plate and above the push rod, the gravity center of the inertia locking block is close to the push rod, and a hook part of the inertia locking block is arranged at the gravity center deflection end of the inertia locking block and used for hooking the push rod; a spring, one end of which is connected to the electromagnetic small latch mounting plate, and the other end of which is connected to the gravity center deflection end of the inertia locking block, the spring is used for resetting after active control action of the inertia locking block, when the electromagnetic small latch and the electromagnetic small latch mounting plate are impacted by the operating mechanism and vibrate, the hook part of the inertia locking block is locked to the push rod based on inertia hysteresis, so as to prevent the electromagnetic small latch from being misoperated.

[0008] The application has the beneficial technical effects that the eccentric rotation and inertia hysteresis of the inertia locking block are used to realize the relative displacement between components, the hook part of the inertia locking block can lock the push rod of the electromagnetic small latch when the electromagnetic small latch is impacted, and the misoperation is effectively prevented, when the electromagnetic small latch is impacted, the impact force is transmitted to the support (the electromagnetic small latch mounting plate) of the cantilever structure, the support is elastically deformed upward, at this time, the inertia locking block is connected eccentrically and downward due to inertia, so that the hook part and the push rod are close to each other and are hooked to be limited, so as to prevent the misoperation of the operating system, the spring can also ensure the stable state of the inertia locking block in normal state, the device does not introduce additional electrical components, and the misoperation is prevented without affecting the use of the electromagnetic small latch in the closing and opening actions. Preferably, the inertial locking block comprises a locking block body and a spring connecting rod, one end of the locking block body is a gravity deflection end, the other end is a hinged end, the hook portion is integrally formed at one end of the locking block body, the locking block body is provided with a rotating shaft hole corresponding to the hinged end, the side wall of the electromagnetic small latch mounting plate is provided with a shaft rod, the rotating shaft hole and the shaft rod are gap fitted and realize eccentric rotation connection of the locking block body and the electromagnetic small latch mounting plate, the spring connecting rod is fixedly arranged on the outer side wall of the locking block body close to the gravity deflection end, and the spring connecting rod is used for connecting the other end of the spring.

[0009] The technical effect generated thereby is that the spring connecting rod cooperates with the spring, due to the deflection of the inertial locking block, an external component is required to ensure its normal stable state, and after subsequent active control of the inertial locking block, it can also be normally reset to ensure its reusability.

[0010] Preferably, the electromagnetic iron top rod is further provided, one end side of the electromagnetic small latch mounting plate is provided with a mounting base of the electromagnetic iron top rod, the electromagnetic iron top rod is located on one side of the pushed rod, the electromagnetic iron top rod is driven to stretch and retract, the electromagnetic iron top rod pushes the pushed rod and can release the restriction state of the spring operating mechanism, one end edge of the electromagnetic iron top rod is provided with a boss, the boss is in sliding contact with the bottom surface of the locking block body, based on the stretching and retracting movement of the electromagnetic iron top rod, the boss can make the locking block body swing upward, and the swing restriction of the hook portion on the pushed rod is released.

[0011] The technical effect generated thereby is that the electromagnetic iron top rod is the key to actively control the pushed rod, and cannot be affected by the inertial locking block to affect the normal operation of the electromagnetic small latch, that is, through the cooperation of the boss and the inertial locking block, before actively pushing the pushed rod of the electromagnetic small latch, the boss can push the inertial locking block and make the hook portion swing upward, so as to release the swing restriction of the pushed rod, and ensure the pushing action of the electromagnetic iron top rod on the pushed rod.

[0012] Preferably, the top side of the boss is provided with an arc-shaped smooth surface, and the arc-shaped smooth surface is in sliding connection with the bottom side of the locking block body.

[0013] The technical effect generated thereby is that the arc-shaped smooth surface of the boss is used in cooperation with the locking block body, which ensures smooth abutment of the inertial locking block and reduces the friction loss between components.

[0014] Preferably, the electromagnetic latch mounting plate is an inverted U-shaped structure plate with multiple support rods between the U-shaped structure plates. The side wall of the electromagnetic latch mounting plate has an oblong hole to allow the electromagnetic latch to rotate. The electromagnetic latch mounting plate is fixed to the frame of the GIS equipment by multiple support rods. The electromagnetic latch is rotatably located inside the electromagnetic latch mounting plate. The push rod is located in the oblong hole, and the oblong hole provides space for the push rod to swing.

[0015] The resulting technical effects are: the electromagnetic latch mounting plate is set in a U-shaped structure, which changes the traditional single-plate setting form, enhances the stability of the structure, and the integrated support (electromagnetic latch mounting plate) greatly improves the support rigidity, significantly reduces elastic deformation under impact, and suppresses latch wobbling.

[0016] Preferably, it further includes an electromagnetic small latch return spring, one end of which is connected to the electromagnetic small latch mounting plate. The two ends of the electromagnetic small latch are a push end and a stop end, respectively. The push rod is fixedly disposed on the push end. The stop end is used to limit the latch assembly of the spring operating mechanism. A spring rod is provided near the stop end of the electromagnetic small latch. The other end of the electromagnetic small latch return spring is connected to the spring rod and is used to reset the electromagnetic small latch after its operation.

[0017] The resulting technical effect is that the electromagnetic latch reset spring causes the electromagnetic latch to reset after it has been activated, ensuring its continued use in subsequent multiple applications.

[0018] Preferably, the electromagnetic small latch return spring is located on the outside of the electromagnetic small latch mounting plate. The electromagnetic small latch mounting plate is provided with a return spring fixing rod for fixing the electromagnetic small latch return spring. The side wall of the electromagnetic small latch mounting plate is provided with a clearance hole for avoiding the spring rod. The spring rod extends through the clearance hole to the outside of the electromagnetic small latch mounting plate.

[0019] The resulting technical effects are: optimized structural layout, improved stress performance, and large clearance holes to ensure that the spring rod travels out of bounds when the electromagnetic latch rotates.

[0020] Preferably, the electromagnetic latch mounting plate is provided with a locking block limiting rod on the upper side corresponding to the inertial locking block, and the locking block limiting rod is used to limit the rotational stroke of the inertial locking block.

[0021] The resulting technical effect is that the locking block limit rod restricts the reset state of the inertial locking block, preventing excessive upward swing and thus affecting subsequent normal use.

[0022] This invention also discloses a locking system for a spring-operated mechanism, comprising the aforementioned inertial locking device, a primary latch, a primary latch roller, a secondary latch, and a transition rod. The primary latch and the secondary latch are arranged vertically and connected to the frame of the GIS equipment via rotating shafts. The primary latch roller is located at one end of the primary latch, and the primary latch abuts against the stop end of the electromagnetic small latch via the primary latch roller. The two ends of the transition rod are connected to the secondary latch and the primary latch respectively, causing the primary latch and the secondary latch to have a tendency to rotate in the same direction. The secondary latch acts on the tripping main crank arm of the operating system.

[0023] The beneficial technical effects of this invention are: the locking system with the inertial locking device can prevent the closing latch of the high-voltage switch GIS spring mechanism from malfunctioning at the end of the energy storage period, thereby preventing the circuit breaker from malfunctioning during closing. It does not introduce electrical components and will not affect the use of existing opening and closing mechanisms. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the inertial locking device for a spring-operated mechanism according to the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the inertial locking device for a spring-operated mechanism according to the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the inertial locking device for a spring-operated mechanism according to the present invention. Figure 3 ; Figure 4 This is a structural diagram of the inertia locking block of an inertia locking device for a spring operating mechanism according to the present invention; Figure 5 This is a structural diagram of an electromagnetic small latch used in an inertial locking device for a spring operating mechanism according to the present invention; Figure 6 This is a structural diagram of a locking system for a spring-operated mechanism according to the present invention; Figure 7 This is a schematic diagram of an operating system having the locking system of the present invention.

[0025] 1 Electromagnetic small latch, 101 Push end, 102 Stop end, 103 Push rod, 104 Spring rod, 2 Electromagnetic small latch mounting plate, 201 Waist-shaped hole, 202 Alternating hole, 203 Locking block limit rod, 3 Inertia locking block, 301 Locking block body, 3011 Hook part, 3012 Rotary shaft hole, 302 Spring connecting rod, 4 Spring, 5 Electromagnet top rod, 501 Boss, 6 Electromagnet, 7 Mounting base, 8 Support rod, 9 Support rod, 10 Electromagnetic small latch return spring, 11 Primary latch, 1101 Primary latch roller, 12 Secondary latch, 13 Transition rod, 14 Opening main crank arm, 15 Output shaft, 16 Chain joint, 17 Chain, 18 Fixed pulley, 19 Flywheel, 20 Energy storage gear, 21 Spring guard plate, 22 Spring cylinder and opening spring, 23 Closing latch. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] See the appendix of this invention. Figures 1 to 7 According to an embodiment of the present invention, an inertial locking device for a spring operating mechanism is provided, which acts on the push rod 103 of an electromagnetic small latch 1. The electromagnetic small latch 1 is used to limit the opening and closing action state of the spring operating mechanism. It includes: an electromagnetic small latch mounting plate 2, which provides a rotational support base for the electromagnetic small latch 1. An inertial locking block 3 is eccentrically mounted on one side of the electromagnetic small latch mounting plate 2 and located above the push rod 103. The center of gravity of the inertial locking block 3 is close to the push rod 103. The center of gravity of the inertial locking block 3 is provided with a hook portion 3011 that hooks the push rod 103. Spring 4, one end of spring 4 is connected to electromagnetic small latch mounting plate 2, and the other end is connected to the center of gravity deflection end of inertial locking block 3. Spring 4 is used to reset inertial locking block 3 after active control action. When the opening and closing action is performed, electromagnetic small latch 1 and electromagnetic small latch mounting plate 2 are vibrated by the impact of the operating mechanism. The hook part 3011 of inertial locking block 3 locks the push rod 103 based on the inertial hysteresis to prevent electromagnetic small latch 1 from being accidentally moved. In other embodiments, the inertial locking block 3 includes a locking block body 301 and a spring connecting rod 302. One end of the locking block body 301 is a center of gravity deflection end, and the other end is a hinge end. A hook portion 3011 is integrally formed on one end of the locking block body 301. The locking block body 301 is provided with a pivot hole 3012 corresponding to the hinge end. The side wall of the electromagnetic small latch mounting plate 2 is provided with a shaft. The pivot hole 3012 and the shaft are clearance-fitted to realize the eccentric rotational connection between the locking block body 301 and the electromagnetic small latch mounting plate 2. The spring connecting rod 302 is fixedly provided on the outer side wall of the locking block body 301 near the center of gravity deflection end. The spring connecting rod 302 is used to connect the other end of the spring 4.

[0028] In some other specific embodiments, an electromagnet push rod 5 is also included. One end of the electromagnetic small latch mounting plate 2 is provided with a mounting base 7 for the electromagnet push rod 5 (an L-shaped base plate on which the electromagnet 6 is mounted). The electromagnet push rod 5 is located on one side of the push rod 103. The extension and retraction of the electromagnet push rod 5 is driven by the electromagnet 6. The electromagnet push rod 5 pushes the push rod 103 and can release the restriction state of the opening and closing action of the spring operating mechanism. One end edge of the electromagnet push rod 5 is provided with a boss 501. The boss 501 slides in contact with the bottom surface of the locking block body 301. Based on the extension and retraction of the electromagnet push rod 5, the boss 501 can cause the locking block body 301 to swing upward, and at the same time release the swing restriction of the hook part 3011 on the push rod 103.

[0029] In some other embodiments, the top side of the boss 501 is provided with an arc-shaped smooth surface, which is slidably connected to the bottom side of the locking block body 301.

[0030] In some other specific embodiments, the electromagnetic latch mounting plate 2 is an inverted U-shaped structure plate with multiple support rods 8 between the U-shaped structure plates. The side wall of the electromagnetic latch mounting plate 2 is provided with an oblong hole 201 to allow the electromagnetic latch 1 to rotate. The electromagnetic latch mounting plate 2 is fixed to the frame of the GIS equipment by multiple support rods 9. The electromagnetic latch 1 is rotatably located on the inner side of the electromagnetic latch mounting plate 2. The push rod 103 is located in the oblong hole 201 (with a certain curvature). The oblong hole 201 provides space for the swing of the push rod 103.

[0031] In some other specific embodiments, an electromagnetic small latch return spring 10 is also included. One end of the electromagnetic small latch return spring 10 is connected to the electromagnetic small latch mounting plate 2. The two ends of the electromagnetic small latch 1 are a push end 101 and a stop end 102, respectively. The push rod 103 is fixedly disposed on the push end 101. The stop end 102 is used to limit the latch assembly (primary latch 11, secondary latch 12 and other related accessories) of the spring operating mechanism. A spring rod 104 is provided near the stop end of the electromagnetic small latch 1. The other end of the electromagnetic small latch return spring 10 is connected to the spring rod 104 and is used to reset the electromagnetic small latch 1 after its action.

[0032] In some other embodiments, the electromagnetic small latch return spring 10 is located on the outside of the electromagnetic small latch mounting plate 2. The electromagnetic small latch mounting plate 2 is provided with a return spring fixing rod for fixing the electromagnetic small latch return spring 10. The side wall of the electromagnetic small latch mounting plate 2 is provided with a clearance hole 202 for a clearance spring rod 104. The spring rod 104 extends through the clearance hole 202 to the outside of the electromagnetic small latch mounting plate 2.

[0033] In some other embodiments, the electromagnetic small latch mounting plate 2 is provided with a locking block limiting rod 203 on the upper side corresponding to the inertial locking block 3. The locking block limiting rod 203 is used to limit the rotational stroke of the inertial locking block 3.

[0034] This patent employs an inertial locking device to prevent the electromagnet latch from shaking when subjected to impact or vibration. An inertial locking block is installed on the electromagnet latch mounting plate, utilizing the inertia of the locking block when the latch system is impacted to lock the latch. This also effectively reduces noise.

[0035] The device has a simple structure and low cost. It does not require electrical drive or other mechanical control systems. It can achieve the function of locking the electromagnetic latch in a very short time by only utilizing the impact and locking structure inertia of the system itself.

[0036] According to d'Alembert's principle and the equivalence principle of general relativity, the hook of the inertial locking block moves downward due to inertia, locking the small electromagnet latch to prevent it from rotating (after the small latch is impacted, the impact force is transmitted to the support of the cantilever structure (the mounting plate of the small electromagnet latch), and the support undergoes upward elastic deformation. At this time, the inertial locking block moves downward due to inertia. Then the support rebounds and collides with the small electromagnet latch, causing it to shake. This time difference ensures that the hook of the inertial locking block has enough time to reach its position and lock the small latch). The small electromagnet latch can then hold the first-stage latch at the designed position (after closing, tens of thousands of Newtons of spring force are transmitted to the latch system through the transmission system, causing the first-stage latch to have an upward tendency to move; the situation is the same after energy storage), preventing it from being misoperated.

[0037] Normal operating conditions of inertial locking device D'Alembert's principle transforms a dynamics problem into a statics problem, introducing the concept of "inertial force." In a non-inertial frame of reference, the acceleration of an object is redefined as a virtual force (i.e., inertial force), thus preserving the form of Newton's second law. For example, the "pushing" force felt by passengers in an accelerating train carriage is a manifestation of inertial force. Its expression is as follows:

[0038] Equations of force and moment balance

[0039] equations of motion Based on d'Alembert's principle, the equations of motion for a damped spring oscillator are as follows:

[0040] c is the spring damping, k is the spring stiffness, m is the mass of the object, and x is the displacement of the object. Based on the above formula, considering the effect of friction, the time t1 required for the inertial block to move into position can be calculated using finite element method.

[0041] When the free end of the beam is struck by a mass block, the velocity and acceleration fields are as follows:

[0042] velocity field

[0043] acceleration field

[0044] In the formula: M — the mass matrix of the structure; C – Damping matrix of the structure; K—The stiffness matrix of the structure; —Acceleration time history vector; , and These represent the displacement, velocity, and acceleration vectors, respectively. Based on the above formulas, the maximum deformation of the cantilever beam (inertial locking block) and the corresponding time t2 can be calculated using finite element analysis, as well as the time t3 when the small latch is supported and collided. By reasonably designing the mass distribution of the inertial locking block and the stiffness of the spring, t1 is guaranteed to be less than t3. At the same time, the structure and arrangement of the moving parts are corrected through motion simulation analysis to prevent motion interference, thus enabling the inertial locking device to work normally.

[0045] The present invention also discloses a locking system for a spring operating mechanism, which includes the aforementioned inertial locking device, a primary latch 11, a primary latch roller 1101, a secondary latch 12, and a transition rod 13. The primary latch 11 and the secondary latch 12 are arranged vertically and connected to the frame of the GIS equipment via rotating shafts. The primary latch roller 1101 is located at one end of the primary latch 11. The primary latch 11 abuts against the stop end 102 of the electromagnetic small latch 1 via the primary latch roller 1101. The two ends of the transition rod 13 are connected to the secondary latch 12 and the primary latch 11, respectively, and cause the primary latch 11 and the secondary latch 12 to have a tendency to rotate in the same direction. The secondary latch 12 acts on the tripping main crank arm 14 of the operating system.

[0046] At the end of the closing process, the secondary latch 12 is struck by the lever on the main crank arm of the tripping circuit and rotates clockwise, pressing against the primary latch 11. After being subjected to force, the primary latch 11 rotates clockwise, and the primary latch roller 1101 collides upward and presses against the electromagnet small latch 1 (the high-speed camera footage shows that the electromagnet small latch rotates to a certain extent after being collided). At this point, the entire transmission system maintains static balance and completes the locking action. When the tripping begins, electromagnet 6 receives the tripping command, and its electromagnet push rod 5 pushes the push rod 103 of the electromagnet small latch 1 to the right. The electromagnet small latch 1 rotates clockwise around the pivot, disengaging from the contact with the primary latch roller 1101. This causes the primary latch 11 (pushed upward by the secondary latch) to rotate clockwise, and the secondary latch 112 loses the limit of the primary latch 11 and rotates clockwise. The tripping main crank arm 14 (pulled downward by the spring force transmitted by the chain) loses the limit of the secondary latch 12, realizing the tripping action. After the electromagnet small latch 1 rotates, the electromagnet small latch return spring can reset it, without affecting the subsequent locking action.

[0047] Reference Appendix Figure 7 Energy storage process: The motor drives the energy storage gear 20 to rotate, which in turn drives the flywheel 19 to rotate clockwise. The chain 17 connected to the flywheel 19 stores energy in the closing spring. When the energy storage is complete, the closing latch 23 locks the roller on the flywheel, and the energy storage is complete. During the closing process, the closing electromagnet pushes the closing latch to disengage, and the closing spring (inside the spring guard plate 21) is released from the energy storage state. The chain pulls the flywheel to rotate clockwise, and the cam coaxial with the flywheel pushes the opening main crank arm 14 to rotate. At the same time, the closing operation of the circuit breaker is completed through the transmission components. The chain 17 connected to the opening main crank arm 14 pulls and compresses the opening spring to store energy. When it is in place, the opening latch (secondary latch) locks the opening main crank arm 14, and the closing is complete. During the opening process: The opening electromagnet is activated, pushing the opening latch to disengage. The opening spring is released from the energy storage state. The chain pulls the main crank arm to rotate, and the output shaft 15 links the circuit breaker transmission components to complete the opening action. The malfunctions mainly occur at the end of the energy storage and closing processes. The closing electromagnet and electromagnetic latch 1 and the opening electromagnet and electromagnetic latch 1 (which have basically the same structure) are both impacted by adjacent parts. The electromagnetic latch 1 itself has rotational freedom. After being impacted, it shakes and deviates from the design position, causing malfunctions.

[0048] The apparatus and methods disclosed in the embodiments are described simply because they correspond to the methods disclosed in the embodiments. For relevant details, please refer to the method section.

[0049] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An inertial locking device for a spring-operated mechanism, acting on a push rod (103) of an electromagnetic latch (1), wherein the electromagnetic latch (1) is used to limit the opening and closing action state of the spring-operated mechanism, characterized in that, include: Electromagnetic latch mounting plate (2), which provides a rotational support base for the electromagnetic latch (1); An inertial locking block (3) is eccentrically mounted on one side of the electromagnetic small latch mounting plate (2) and located above the push rod (103). The center of gravity of the inertial locking block (3) is close to the push rod (103). The center of gravity of the inertial locking block (3) is provided with a hook (3011) that hooks the push rod (103). Spring (4), one end of which is connected to the electromagnetic small latch mounting plate (2), and the other end is connected to the center of gravity deflection end of the inertial locking block (3). Spring (4) is used for the reset after the inertial locking block (3) is actively controlled. When the switch is opened and closed, the electromagnetic small latch (1) and the electromagnetic small latch mounting plate (2) are vibrated by the impact of the operating mechanism. The hook part (3011) of the inertial locking block (3) locks the push rod (103) based on the inertial hysteresis to prevent the electromagnetic small latch (1) from being moved by mistake.

2. The inertial locking device for a spring-operated mechanism according to claim 1, characterized in that, The inertial locking block (3) includes a locking block body (301) and a spring connecting rod (302). One end of the locking block body (301) is a center of gravity deflection end, and the other end is a hinge end. The hook part (3011) is integrally formed at one end of the locking block body (301). The locking block body (301) is provided with a pivot hole (3012) corresponding to the hinge end. The side wall of the electromagnetic small latch mounting plate (2) is provided with a shaft. The pivot hole (3012) is clearance-fitted with the shaft to realize the eccentric rotation connection between the locking block body (301) and the electromagnetic small latch mounting plate (2). The spring connecting rod (302) is fixedly provided on the outer side wall of the locking block body (301) near the center of gravity deflection end. The spring connecting rod (302) is used to connect the other end of the spring (4).

3. The inertial locking device for a spring-operated mechanism according to claim 2, characterized in that, It also includes an electromagnet push rod (5), and an electromagnet push rod (5) mounting base (7) is provided on one end of the electromagnet small latch mounting plate (2). The electromagnet push rod (5) is located on one side of the push rod (103). The extension and retraction of the electromagnet push rod (5) is driven by an electromagnet (6). The electromagnet push rod (5) pushes the push rod (103) and can release the restriction state of the opening and closing action of the spring operating mechanism. A boss (501) is provided on one end edge of the electromagnet push rod (5). The boss (501) slides in contact with the bottom surface of the locking block body (301). Based on the extension and retraction of the electromagnet push rod (5), the boss (501) can cause the locking block body (301) to swing upward, and at the same time release the swing restriction of the hook part (3011) on the push rod (103).

4. The inertial locking device for a spring-operated mechanism according to claim 3, characterized in that, The top side of the boss (501) is provided with an arc-shaped smooth surface, which is slidably connected to the bottom side of the locking block body (301).

5. The inertia locking device for a spring-operated mechanism according to claim 1, characterized in that, The electromagnetic latch mounting plate (2) is an inverted U-shaped structure plate with multiple support rods (8) between the U-shaped structure plates. The side wall of the electromagnetic latch mounting plate (2) is provided with a waist-shaped hole (201) to avoid the rotation of the electromagnetic latch (1). The electromagnetic latch mounting plate (2) is fixed to the frame of the GIS equipment by multiple support rods (9). The electromagnetic latch (1) is rotatably located on the inner side of the electromagnetic latch mounting plate (2). The push rod (103) is located in the waist-shaped hole (201). The waist-shaped hole (201) provides space for the swing of the push rod (103).

6. The inertia locking device for a spring-operated mechanism according to claim 5, characterized in that, It also includes an electromagnetic small latch return spring (10), one end of which is connected to the electromagnetic small latch mounting plate (2). The two ends of the electromagnetic small latch (1) are a push end (101) and a stop end (102), respectively. The push rod (103) is fixedly disposed on the push end (101). The stop end (102) is used to limit the latch assembly of the spring operating mechanism. The electromagnetic small latch (1) is provided with a spring rod (104) near the stop end. The other end of the electromagnetic small latch return spring (10) is connected to the spring rod (104) and is used to reset the electromagnetic small latch (1) after its operation.

7. The inertial locking device for a spring-operated mechanism according to claim 5, characterized in that, The electromagnetic small latch return spring (10) is located on the outside of the electromagnetic small latch mounting plate (2). The electromagnetic small latch mounting plate (2) is provided with a return spring fixing rod for fixing the electromagnetic small latch return spring (10). The side wall of the electromagnetic small latch mounting plate (2) is provided with a clearance hole (202) for clearing the spring rod (104). The spring rod (104) extends through the clearance hole (202) to the outside of the electromagnetic small latch mounting plate (2).

8. The inertia locking device for a spring-operated mechanism according to claim 1, characterized in that, The electromagnetic small latch mounting plate (2) is provided with a locking block limiting rod (203) on the upper side corresponding to the inertial locking block (3). The locking block limiting rod (203) is used to limit the rotational stroke of the inertial locking block (3).

9. A locking system for a spring-operated mechanism, characterized in that, The device includes an inertial locking device as described in any one of claims 1-8, a primary latch (11), a primary latch roller (1101), a secondary latch (12), and a transition rod (13). The primary latch (11) and the secondary latch (12) are arranged vertically and connected to the frame of the GIS equipment via rotating shafts. The primary latch roller (1101) is located at one end of the primary latch (11). The primary latch (11) abuts against the stop end (102) of the electromagnetic small latch (1) through the primary latch roller (1101). The two ends of the transition rod (13) are connected to the secondary latch (12) and the primary latch (11) respectively, causing the primary latch (11) and the secondary latch (12) to have a tendency to rotate in the same direction. The secondary latch (12) acts on the tripping main crank arm (14) of the operating system.

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