A locking device for isolating the crank handle socket of a power cabinet

Abstract

The present invention discloses a locking device for the crank handle socket of an isolation trolley of an electric power cabinet. The locking device comprises a drive assembly comprising a protective shell disposed on the electric power cabinet door, a rotating member disposed within the protective shell, and a limit member disposed on top of the rotating member; and an unlocking assembly comprising a transmission member disposed on the electric power cabinet door and a push-pull member disposed within the transmission member. By configuring the drive assembly and the unlocking assembly, the present invention ensures that the crank handle socket of the isolation trolley must be operated as required when unlocking, preventing misoperation, while allowing direct operation when locking. This device is convenient, simple, and has wide applicability.

Description

Technical Field

[0001] The invention relates to the technical field of electric power equipment, in particular to a locking device for isolating a crank handle socket of a power cabinet. Background Art

[0002] To prevent accidental operation of electrical equipment during operation, power cabinets must incorporate five interlocking features: preventing the push-pull of circuit breaker trolleys under load, preventing accidental opening and closing of circuit breakers, preventing closing of circuit breakers when the grounding switch is in the closed position, preventing accidental entry into live compartments, and preventing accidental closing of the grounding switch when live. This prevents misoperation. A locking device for the isolation trolley crank jack in a power cabinet has been designed. This locking device requires a programmed operation to open the isolation trolley crank jack, giving operators ample reaction time and preventing misoperation. Summary of the Invention

[0003] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of this application to avoid obscuring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions should not be used to limit the scope of the present invention.

[0004] In view of the above problems and / or the problems existing in the existing locking devices for isolating the crank socket of the trolley of the power cabinet, the present invention is proposed.

[0005] Therefore, the problem to be solved by the present invention is that the common isolation trolley does not follow the procedure to lock the socket, which is prone to misoperation.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a locking device for isolating the crank handle socket of an electric power cabinet, comprising a driving assembly, including a protective shell arranged on the electric power cabinet door, a rotating part arranged inside the protective shell, and a limiting part arranged on the top of the rotating part; and an unlocking assembly, including a transmission part arranged on the electric power cabinet door, and a push-pull part arranged inside the transmission part.

[0007] As a preferred solution of the locking device for the power cabinet isolation trolley crank socket described in the present invention, the rotating part includes a rotating handle arranged on the outer surface of the protective shell, and a rotating shaft arranged inside the protective shell, and the rotating handle is fixedly connected to the rotating shaft.

[0008] As a preferred solution of the locking device for the power cabinet isolation trolley crank socket of the present invention, the rotating part also includes a driving gear arranged inside the protective shell, and the driving gear is rotatably connected to the rotating shaft.

[0009] As a preferred solution of the locking device for the power cabinet isolation trolley crank socket described in the present invention, the limiting member includes a ratchet arranged at the top of the driving gear, and a ratchet-like disk arranged at the top of the ratchet, and the ratchet is fixedly connected to the ratchet-like disk and fixedly connected to the rotating shaft.

[0010] As a preferred solution of the locking device for the crank socket of the isolation trolley of the power cabinet according to the present invention, the limiting member further includes a first limiting block and a second limiting block arranged on the top surface of the driving gear, and a limiting rod arranged on the top of the protective shell, and the first limiting block and the second limiting block are both fixedly connected to the driving gear through a pin shaft.

[0011] As a preferred solution of the locking device for the isolation trolley crank socket of the power cabinet described in the present invention, the transmission member includes a driven gear ring arranged inside the protective shell, and a driven gear arranged inside the driven gear ring, and the inner and outer rings of the driven gear ring are provided with meshing teeth.

[0012] As a preferred solution of the locking device for the power cabinet isolation trolley crank socket described in the present invention, the push-pull member includes a rack and a mounting seat arranged inside the driven gear ring, and the rack is slidably connected to the mounting seat.

[0013] As a preferred solution of the locking device for the power cabinet isolation trolley crank socket of the present invention, the push-pull member further includes a push-pull groove arranged inside the mounting seat.

[0014] As a preferred solution of the locking device for the isolation trolley crank socket of the power cabinet described in the present invention, the push-pull member also includes a moving block arranged on the top of the mounting seat, the moving block is fixedly connected to the rack and the number of the moving blocks is set to four, which are symmetrically arranged in pairs.

[0015] As a preferred solution of the locking device for the crank socket of the isolation trolley of the power cabinet described in the present invention, the push-pull member further includes protrusions and sliding grooves arranged on both sides of the moving block.

[0016] The beneficial effects of the present invention are as follows: through the arrangement of the driving assembly and the unlocking assembly, the crank handle socket of the isolation trolley must be operated as required when unlocking to prevent misoperation, and can be directly operated when locking, which is convenient and simple and has wide applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort. Among them:

[0018] Figure 1 This is an application scenario diagram of the locking device used to isolate the trolley crank handle socket of the power cabinet.

[0019] Figure 2 This is a diagram of the overall internal structure of the locking device used to isolate the trolley crank handle socket of the power cabinet.

[0020] Figure 3 A side view of a locking device for isolating a trolley crank handle socket in a power cabinet.

[0021] Figure 4 This is a view of the locking device for isolating the trolley crank handle socket of the power cabinet in the locked state.

[0022] Figure 5 This is a view of the unlocked state of the locking device used to isolate the trolley crank handle socket of the power cabinet.

[0023] Figure 6 This is a diagram showing the linkage between the limiter and the driving gear of the locking device for isolating the crank handle socket of the power cabinet.

[0024] Figure 7 This is a diagram showing the state where the limit piece of the locking device for the power cabinet isolation trolley crank handle socket is disconnected from the driving gear.

[0025] Figure 8 This is a structural diagram of the push-pull components of the locking device used to isolate the trolley crank socket of the power cabinet. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive of other embodiments.

[0029] Example 1

[0030] Reference Figure 1 and Figure 2 This is the first embodiment of the present invention, which provides a locking device for a crank jack socket on an isolation trolley of a power cabinet. The locking device for the crank jack socket on an isolation trolley of a power cabinet includes a drive assembly 100 and an unlocking assembly 200. The drive assembly 100 allows the device to operate according to a program when unlocking, preventing misoperation. The unlocking assembly 200 makes unlocking the socket more convenient and quick.

[0031] Specifically, the drive assembly 100 includes a protective shell 101 provided on the power cabinet door, a rotating member 102 provided inside the protective shell 101, and a limit member 103 provided on the top of the rotating member 102. The protective shell 101 serves to install and protect the device, the rotating member 102 serves as a driving device, and the limit member 103 ensures that the device must operate according to the program.

[0032] Preferably, the unlocking assembly 200 includes a transmission member 201 provided on the power cabinet door, and a push-pull member 202 provided inside the transmission member 201. The transmission member 201 plays a transmission role, and the push-pull member 202 completes the opening and closing state of the device.

[0033] During use, when the isolation trolley crank socket needs to be used, the rotating member 102 is rotated counterclockwise in the direction shown in the figure. At this time, the limit member 103 must be operated to enable the rotating member 102 to drive the transmission member 201 to move. When the transmission member 201 moves, the push-pull member 202 also begins to move under its action. At this time, the push-pull member 202 opens, the device is in the open state, and the isolation trolley crank socket is exposed and can be used. When closing, simply rotate the rotating member 102 clockwise in the direction shown in the figure. At this time, there is no need to operate the limit member 103. The rotating member 102 can drive the transmission member 201 to move, thereby driving the push-pull member 202 to close. When unlocking this device, the limit member 103 must be operated according to the procedure to unlock it. This gives the staff ample reaction time and prevents the occurrence of misoperation and the inadvertent opening of the isolation trolley crank socket. When locking, the operation is simple and does not require following the procedure, which is convenient and safe.

[0034] Example 2

[0035] Reference Figures 2 to 7, which is the second embodiment of the present invention, and is based on the previous embodiment.

[0036] Specifically, the rotating member 102 includes a rotating handle 102a disposed on the outer surface of the protective shell 101 and a rotating shaft 102b disposed within the protective shell 101. The rotating handle 102a is fixedly connected to the rotating shaft 102b. The rotating handle 102a is disposed outside the protective shell 101 and can be operated from the outside to drive the rotating shaft 102b to rotate.

[0037] Preferably, the rotating member 102 further includes a driving gear 102c disposed inside the protective shell 101, the driving gear 102c being rotatably connected to the rotating shaft 102b. The driving gear 102c rotates with the rotating shaft 102b only under certain conditions and does not rotate with the rotating shaft 102b under normal circumstances.

[0038] Preferably, the limiting member 103 includes a ratchet 103a disposed on top of the driving gear 102c, and a ratchet-like disc 103b disposed on top of the ratchet 103a. The ratchet 103a is fixedly connected to the ratchet-like disc 103b and to the rotating shaft 102b. When the rotating shaft 102b rotates, the ratchet 103a and the ratchet-like disc 103b rotate along with it.

[0039] Preferably, the limiting member 103 further includes a first limiting block 103c and a second limiting block 103d disposed on the top surface of the driving gear 102c, and a limiting rod 103e disposed on the top of the protective housing 101. The first limiting block 103c and the second limiting block 103d are both fixedly connected to the driving gear 102c via a pin. Torsion springs are provided at the locations where the first limiting block 103c and the second limiting block 103d are connected to the pin. Under normal circumstances, the head of the first limiting block 103c is clamped on the teeth of the ratchet 103a by the action of the torsion spring, affecting its movement. However, due to the action of the spring on the limiting rod 103e, under normal circumstances, the limiting rod 103e will contact the tail of the first limiting block 103c, causing the head of the first limiting block 103c to tilt and disengage from the ratchet 103a. Under the action of the torsion spring, the second limiting block 103d is pressed against the teeth of the ratchet-like disk 103b. When the rotating shaft 102b rotates counterclockwise as shown, the tail of the first stopper 103c abuts against the stopper rod 103e, causing its head to tilt. The rotation of the ratchet 103a will not affect the driving gear 102c. Simultaneously, the second stopper 103d will not hinder the movement of the ratchet-like disk 103b. At this point, the movement of the rotating shaft 102b is disconnected from the driving gear 102c. To ensure that the driving gear 102c moves with the rotating shaft 102b, the stopper rod 103e must be lifted while rotating. This allows the first stopper 103c to engage the teeth of the ratchet 103a under the action of the torsion spring, allowing the ratchet 103a to drive the first stopper 103c, which in turn, drives the driving gear 102c. When the rotating shaft 102b rotates clockwise, the first limit block 103c will not be affected by the ratchet 103a. At this time, the ratchet-like disk 103b drives the driving gear 102c to rotate through the second limit block 103d, and there is no need to operate the limit rod 103e. Because when the first limit block 103c rotates clockwise and hits the limit rod 103e, the limit rod 103e will smoothly transition from the top of the first limit block 103c and bounce upward, without causing any obstruction to the rotation of the driving gear 102c.

[0040] Furthermore, the transmission member 201 includes a driven ring gear 201a disposed within the protective housing 101, and a driven gear 201b disposed within the driven ring gear 201a. Both the inner and outer rings of the driven ring gear 201a are provided with meshing teeth. The outer teeth of the driven ring gear 201a mesh with the driving gear 102c, while the inner teeth of the driven ring gear 201a mesh with the driven gear 201b. The number of driven gears 201b can be set to four.

[0041] During use, when the isolated trolley crank handle socket is needed, the handle 102a is rotated counterclockwise in the direction shown in the figure. This rotation of the handle 102a drives the rotating shaft 102b clockwise. At this time, the limit rod 103e must be lifted upward to enable the ratchet 103a to drive the driving gear 102c. This is because the first limit block 103c and the second limit block 103d are both equipped with torsion springs where they connect to the pin. Under normal circumstances, the head of the first limit block 103c is stuck on the teeth of the ratchet 103a under the action of the torsion spring, affecting its movement. However, due to the action of the spring on the limit rod 103e, under normal circumstances, the limit rod 103e will contact the tail of the first limit block 103c, causing the head of the first limit block 103c to tilt and disengage from the ratchet 103a. The second limit block 103d is pressed against the teeth of the ratchet-like disk 103b under the action of the torsion spring. When the rotating shaft 102b rotates counterclockwise as shown in the figure, the tail of the first limit block 103c rests on the limit rod 103e, causing its head to tilt up, and the rotation of the ratchet 103a will not affect the driving gear 102c. At the same time, the second limit block 103d will not hinder the movement of the ratchet-like disk 103b. At this time, the movement of the rotating shaft 102b is separated from the driving gear 102c. Therefore, if you want the driving gear 102c to move with the rotating shaft 102b, you need to lift the limit rod 103e while rotating. When the driving gear 102c rotates, it will drive the driven ring gear 201a to rotate, and the driven ring gear 201a will drive the four driven gears 201b to rotate. The push-pull member 202 also starts to move under the action of the driven gear 201b. At this time, the push-pull member 202 is open, the device is in the open state, and the isolation trolley crank handle socket is exposed and can be used. When the handle 102a needs to be closed, it is only necessary to rotate the handle 102a clockwise in the direction shown in the figure. At this time, the handle 102a can be closed directly without operating the limit rod 103e. The reason is that when the rotating shaft 102b rotates clockwise, the first limit block 103c is not affected by the ratchet 103a. At this time, the driving gear 102c is driven to rotate by the ratchet-like disk 103b through the second limit block 103d, and there is no need to operate the limit rod 103e. Because when the first limit block 103c rotates clockwise and hits the limit rod 103e, the limit rod 103e will smoothly bounce upward from the top of the first limit block 103c, without hindering the rotation of the driving gear 102c. Then, through the above series of transmissions, the socket can be closed. When unlocking, the limit member 103 must be operated according to the procedure to unlock, giving the staff ample reaction time to prevent the occurrence of misoperation and inadvertent opening of the isolation trolley crank socket. When locking, the operation is simple and does not require following the procedure, which is convenient and safe.

[0042] Example 3

[0043] Reference Figures 1 to 8, which is the third embodiment of the present invention, is based on the first two embodiments.

[0044] Specifically, the push-pull member 202 includes a rack 202a and a mounting seat 202b disposed inside the driven gear ring 201a, wherein the rack 202a is slidably connected to the mounting seat 202b. The number of the racks 202a can be set to four and mesh with the four driven gears 201b.

[0045] Preferably, the push-pull member 202 further includes a push-pull groove 202b-1 disposed inside the mounting seat 202b, wherein the push-pull groove 202b-1 cooperates with the rack 202a.

[0046] Preferably, the push-pull member 202 further includes a moving block 202c disposed on top of the mounting seat 202b, the moving block 202c being fixedly connected to the rack 202a and being four in number, symmetrically arranged in pairs, and being capable of moving along the push-pull slot 202b-1.

[0047] Furthermore, the push-pull member 202 further includes a protrusion 202c-1 and a slide groove 202c-2 provided on both sides of the moving block 202c. The protrusion 202c-1 cooperates with the slide groove 202c-2 to ensure the stability of the movement.

[0048] During use, when the isolated trolley crank handle socket is needed, the handle 102a is rotated counterclockwise in the direction shown in the figure. This rotation of the handle 102a drives the rotating shaft 102b clockwise. At this time, the limit rod 103e must be lifted upward to enable the ratchet 103a to drive the driving gear 102c. This is because the first limit block 103c and the second limit block 103d are both equipped with torsion springs where they connect to the pin. Under normal circumstances, the head of the first limit block 103c is stuck on the teeth of the ratchet 103a under the action of the torsion spring, affecting its movement. However, due to the action of the spring on the limit rod 103e, under normal circumstances, the limit rod 103e will contact the tail of the first limit block 103c, causing the head of the first limit block 103c to tilt and disengage from the ratchet 103a. The second limit block 103d is pressed against the teeth of the ratchet-like disk 103b under the action of the torsion spring. When the rotating shaft 102b rotates counterclockwise as shown in the figure, the tail of the first limit block 103c rests on the limit rod 103e, causing its head to tilt up, and the rotation of the ratchet 103a will not affect the driving gear 102c. At the same time, the second limit block 103d will not hinder the movement of the ratchet-like disk 103b. At this time, the movement of the rotating shaft 102b is separated from the driving gear 102c. Therefore, if you want the driving gear 102c to move with the rotating shaft 102b, you need to lift the limit rod 103e while rotating. When the driving gear 102c rotates, it will drive the driven ring gear 201a to rotate, and the driven ring gear 201a will drive the four driven gears 201b to rotate. When the driven gear 201b rotates clockwise, the rack 202a will pull the moving block 202c through the push-pull slot 202b-1, revealing the isolation trolley crank handle socket, and the device is in the open state. During the process of the four moving blocks 202c separating from each other, the protrusion 202c-1 cooperates with the slide groove 202c-2 to ensure its stability during movement. To close the socket, the user simply rotates the handle 102a clockwise in the direction shown in the figure, without operating the limit rod 103e. This is because when the rotating shaft 102b rotates clockwise, the first limit block 103c is not affected by the ratchet 103a. The ratchet-like disc 103b then drives the driving gear 102c through the second limit block 103d, without operating the limit rod 103e. When the first limit block 103c rotates clockwise and hits the limit rod 103e, the limit rod 103e smoothly bounces upward from the top of the first limit block 103c, without hindering the rotation of the driving gear 102c. The above series of transmissions then completes the closing of the socket. When unlocking, the device must operate the limiter 103 according to the procedure to unlock, giving the staff sufficient reaction time to prevent the occurrence of misoperation and inadvertent opening of the isolation trolley handle socket. When locking, the operation is simple and does not require operation according to the procedure, which is convenient and safe.

[0049] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A locking device for a power cabinet isolation trolley crank socket, characterized by: include, A drive assembly (100) comprises a protective shell (101) disposed on a power cabinet door, a rotating member (102) disposed inside the protective shell (101), and a limiting member (103) disposed on the top of the rotating member (102); and, An unlocking assembly (200) comprising a transmission member (201) disposed on the power cabinet door, and a push-pull member (202) disposed inside the transmission member (201); The rotating member (102) comprises a rotating handle (102a) arranged on the outer surface of the protective shell (101), and a rotating shaft (102b) arranged inside the protective shell (101), wherein the rotating handle (102a) is fixedly connected to the rotating shaft (102b); The rotating member (102) further comprises a driving gear (102c) arranged inside the protective shell (101), and the driving gear (102c) is rotatably connected to the rotating shaft (102b); The limiting member (103) comprises a ratchet (103a) arranged on the top of the driving gear (102c), and a ratchet-like disc (103b) arranged on the top of the ratchet (103a), wherein the ratchet (103a) is fixedly connected to the ratchet-like disc (103b) and to the rotating shaft (102b); The transmission member (201) comprises a driven gear ring (201a) arranged inside the protective shell (101), and a driven gear (201b) arranged inside the driven gear ring (201a), and the inner and outer rings of the driven gear ring (201a) are both provided with meshing teeth; The push-pull member (202) comprises a rack (202a) and a mounting seat (202b) arranged inside the driven gear ring (201a), wherein the rack (202a) is slidably connected to the mounting seat (202b); The push-pull member (202) further comprises a moving block (202c) arranged on the top of the mounting seat (202b), the moving block (202c) being fixedly connected to the rack (202a), and the number of the moving blocks (202c) is set to four, and they are symmetrically arranged in pairs.

2. The locking device for the crank handle socket of the isolation trolley of the power cabinet according to claim 1, characterized in that: The limiting member (103) further comprises a first limiting block (103c), a second limiting block (103d) arranged on the top surface of the driving gear (102c), and a limiting rod (103e) arranged on the top of the protective shell (101); the first limiting block (103c) and the second limiting block (103d) are both fixedly connected to the driving gear (102c) via a pin shaft.

3. The locking device for the crank handle socket of the isolation trolley of the power cabinet according to claim 2, characterized in that: The push-pull member (202) further comprises a push-pull groove (202b-1) arranged inside the mounting seat (202b).

4. The locking device for the crank handle socket of the isolation trolley of the power cabinet according to claim 3, characterized in that: The push-pull member (202) further comprises protrusions (202c-1) and sliding grooves (202c-2) arranged on both sides of the moving block (202c).

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