CN115910662A - A switch cabinet interlock protection mechanism and switch cabinet - Google Patents

Abstract

The invention discloses a switchgear interlocking protection mechanism and a switchgear, relating to the technical field of electrical equipment, comprising: an outer protective shell, which is installed on the cabinet door; an isolating switch control mechanism, including a rope, a driving mechanism; a driving mechanism It is interspersed and installed in the outer protective shell; the driving mechanism includes a mounting block, a rotating shaft body, and a limit piece; the rotating shaft body is provided with locking teeth; there are three accommodating slots in the mounting block, and the external force rotates or translates the rotating shaft body, which can make the The locking teeth of the rotating shaft are switched into different accommodation slots, and under the action of the limiter, the locking teeth are located in one of the accommodation slots, and the opening of the disconnector is completed by pulling the rope by switching the position of the locking teeth. And closing, the structure is simple and ingenious, which can enable the operator to open the gate and cut off the power before opening the door, with high safety; there is a handle plate on the rotating shaft, and the jack on the handle plate is consistent with the position of the locking tooth, which is convenient for the operator Visually observe the position of the locking teeth, so as to judge the state of the isolating switch.

Description

A switch cabinet interlock protection mechanism and switch cabinet

technical field

The invention relates to the technical field of electrical equipment, in particular to a switch cabinet interlock protection mechanism and a switch cabinet.

Background technique

The switchgear is a kind of electrical equipment. The main function of the switchgear is to open and close, control and protect the electrical equipment during the process of power generation, transmission, distribution and power conversion in the power system. The components in the switch cabinet are mainly composed of circuit breakers, disconnectors, load switches, operating mechanisms, transformers and various protection devices.

In actual operation, it is necessary to open and cut off the power inside the switch cabinet, so that the operator can open the door of the switch cabinet to ensure safety. However, in actual operation, there may be a possibility of forgetting to close the electromagnetic switch. Personnel visually observe the operating state of the interlock mechanism, which makes it difficult to detect when the interlock mechanism breaks down and does not work.

The Chinese patent with the application number CN112701604B discloses a switchgear protection interlocking mechanism and a metal armored removable switchgear using the interlocking mechanism, which belongs to the field of electrical equipment. The interlocking mechanism includes being arranged on the switchgear door or A plurality of grooves on the door frame, and a fixed component, a sliding component and a limit component arranged in the grooves to cooperate with each other, and the fixed component and the sliding component are connected to the isolation switch through a rope linkage. In the above patent, the sliding plate is exposed on the outside of the switch cabinet, which is prone to unnecessary misoperation, affects the use of the switch cabinet and poses certain safety risks.

Contents of the invention

The main technical problem to be solved by the present invention is to provide a switch cabinet interlocking protection mechanism and a switch cabinet, which can solve the problems mentioned in the above-mentioned background technology.

In order to solve the above-mentioned main technical problems, the following technical solutions are adopted to realize:

A switch cabinet interlock protection mechanism, comprising:

The outer protective shell is installed on the cabinet door and has openings at both ends; a stepped surface is provided inside the outer protective shell;

The isolating switch control mechanism includes a rope connected to the isolating switch handle, and a driving mechanism that controls the pulling of the rope to make the isolating switch open or close; the isolating switch handle is installed in the switch cabinet operating room; the driving mechanism is inserted and installed outside for protection inside the shell;

Wherein, the driving mechanism includes a mounting block, a rotating shaft body, and a limiter; the mounting block is installed in the outer protective shell; the end of the rotating shaft body located inside the cabinet door is connected with a connecting rod connected with a rope; The rotating shaft body is installed in the mounting block; the rotating shaft body is also provided with locking teeth; the mounting block is provided with three accommodating grooves; the limiting member is used to limit the locking teeth in one of them placed in the groove and installed at the end of the rotating shaft; when the rotating shaft rotates or translates in the mounting block, the locking teeth can be switched into the three accommodating grooves so that the connecting rod moves and pulls the isolation switch handle.

Preferably, the mounting block includes a mounting plate and a fixing block fixed together left and right; the fixing block is close to the handle of the isolation switch; the accommodating groove is located in the fixing block; the rotating shaft is passed through and connected to the mounting plate ; The fixed block is provided with a through groove for accommodating the rotating shaft body; the through groove communicates with the three accommodating grooves.

Preferably, the accommodating groove one and the accommodating groove two are respectively located on opposite sides of the through groove, and the accommodating groove one is close to the handle of the isolation switch; Axially runs through the fixed block; the three accommodation grooves are distributed in the fixed block along the radial direction of the rotating shaft body, and the starting point of the three accommodation grooves communicates with the second accommodation groove, and the end point is close to the first accommodation groove; when the card When the tooth enters the second accommodation slot from the first accommodation slot, the connecting rod moves and pulls the handle of the isolating switch to open the gate; when the locking tooth enters the second accommodation slot from the third accommodation slot, the connecting rod moves and pulls The isolating switch handle is closed.

Preferably, the limiting member includes a limiting spring and a torsion spring; the limiting spring is sleeved on the side of the rotating shaft away from the handle of the isolation switch, and fixed on the mounting plate; one end of the torsion spring is installed on The other end of the fixed block is installed on the end of the rotating shaft close to the connecting rod; under the elastic force of the limit spring and the torsion spring, the locking teeth are located in the middle of the accommodating groove one; press and rotate the When the shaft body is rotated, the locking teeth can enter the second accommodation groove, and reach the middle position of the second accommodation groove after the limit spring is reset; when the locking teeth are located at the middle position of the second accommodation groove, The torsion spring can drive the locking teeth to rotate to the end position of the accommodation groove three.

Further, the step surface is provided with a lock body hole for opening and closing the cabinet door; a handle plate is provided at the end of the rotating shaft away from the handle of the isolating switch; there is a jack on the handle plate; the jack The connection line with the locking teeth is parallel to the axis of the rotating shaft; when the locking teeth are located in the accommodation groove three, the insertion hole is facing the hole of the lock body.

Further, a cover is detachably connected to the outer end of the outer protective shell located outside the cabinet door.

Further, the rope is provided with a buffer spring; the connecting rod is provided with a universal connecting ring connected with the rope; the cabinet of the switch cabinet is provided with a roller assembly that limits the moving direction of the rope.

Preferably, the roller assembly includes a first direction roller and a second direction roller perpendicular to the axis of the first direction roller.

A switch cabinet includes the above-mentioned interlocking protection mechanism.

Compared with the prior art, the present invention has the following advantages when applied to switch cabinets:

(1) The isolation switch control mechanism includes a rope and a driving mechanism, and the driving mechanism includes a rotating shaft body, a mounting block and a limit piece; the mounting block is provided with three accommodation grooves, and the external force rotates or translates the rotating shaft body to make the rotation The locking teeth of the shaft body are switched into different accommodation slots, and under the action of the limiter, the locking teeth are located in one of the accommodation slots. By switching the locking teeth position, the rope is pulled to complete the opening and closing of the isolating switch. The gate has a simple and ingenious structure, which enables the operator to open the gate and cut off the power before opening the door, with high safety.

(2) A handle plate is provided on the rotating shaft body, and the jack on the handle plate is consistent with the position of the locking teeth, so that the operator can intuitively observe the position of the locking teeth, thereby judging the state of the isolating switch.

(3) When the locking teeth are located in the accommodation slot three, that is, when the isolating switch is in the off state, the jack and the lock body hole located in the outer protective shell can be facing each other. At this time, the operator can open the cabinet door, further Improved security.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings that need to be used in the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those skilled in the art Ordinary technicians can also obtain other drawings based on these drawings on the premise of not paying creative work.

Figure 1 is a schematic diagram of the overall structure when the isolating switch is in the closing state;

Fig. 2 is a schematic diagram showing an enlarged structure of the driving mechanism when the locking teeth are located in the accommodation slot 1;

Fig. 3 is a schematic diagram of the longitudinal section structure of the fixed block when the locking teeth are located in the accommodation groove 1;

Fig. 4 is a left view structural diagram of the handle plate when the locking teeth are located in the first accommodation slot;

Fig. 5 is a schematic diagram of the enlarged structure of the driving mechanism when the locking teeth are located in the second accommodation slot;

Fig. 6 is a schematic diagram of the longitudinal section structure of the fixed block when the locking teeth are located in the second accommodation groove;

Fig. 7 is a schematic diagram of the left view structure of the handle plate when the locking teeth are located in the second accommodating groove;

Fig. 8 is an enlarged structural schematic diagram of the driving mechanism when the locking teeth are located in the accommodation groove three;

Fig. 9 is a schematic diagram of the longitudinal section structure of the fixed block when the locking teeth are located in the accommodation groove three;

Fig. 10 is a left view structural diagram of the handle plate when the locking teeth are located in the accommodation groove three.

In the figure: 1 is the cabinet body, 101 is the cabinet door, 102 is the isolating switch handle, 2 is the outer protective shell, 21 is the step surface, 22 is the lock body hole, 23 is the cover, 3 is the driving mechanism, 31 is the rotating shaft , 32 is a mounting block, 321 is a mounting plate, 322 is a fixed block, 323 is accommodating groove one, 324 is accommodating groove two, 325 is accommodating groove three, 33 is a connecting rod, 331 is a universal connecting ring, 34 35 is a slot, 36 is a limit spring, 37 is a torsion spring, 38 is a handle plate, 381 is a socket, 4 is a rope, 41 is a buffer spring, 5 is a roller assembly, 51 is a first direction roller , 52 is the second direction roller.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention. In addition, all the connection relationships mentioned in this article do not refer to the direct connection of components, but mean that a better connection structure can be formed by adding or reducing connection accessories according to the specific implementation situation.

Embodiment one,

Please refer to Fig. 1-10, a switch cabinet interlocking protection mechanism includes an outer protective case 2 and a disconnector control mechanism; the outer protective case 2 is used to install the disconnector control mechanism and protect the disconnector control mechanism.

The isolating switch is installed in the operating room of the cabinet body 1 , and the isolating switch is opened and powered off or closed and powered on by pulling the isolating switch handle 102 .

The outer protective shell 2 is installed on the cabinet door 101 of the switchgear cabinet body 1 through horizontal penetration, and the preferred outer protective shell 2 is detachably installed on the cabinet door 101 by screws, which is convenient for replacement; the outer protective shell 2 Open at both ends, with a stepped surface 21 inside; the small end of the outer protective shell 2 is located inside the cabinet door 101; the outer end of the outer protective shell 2 located on the outer side of the cabinet door 101 is detachably connected with a cover 23, that is, the cover 23 is hinged On the outer protective shell 2, or screwed on the outer protective shell 2.

The isolating switch control mechanism includes a rope 4 and a driving mechanism 3; the rope 4 is connected to the handle of the isolating switch; the driving mechanism 3 can pull the rope 4 to realize the opening and closing of the isolating switch, and one end of the specific rope 4 is connected to the handle of the isolating switch. The other end of the handle is connected to the driving mechanism 3; the driving mechanism 3 is inserted and installed in the outer protective shell 2.

The driving mechanism 3 includes a mounting block 32, a rotating shaft body 31, and a limiting member; the mounting block 32 includes a mounting plate 321 and a fixing block 322; the mounting plate 321 and the fixing block 322 are distributed along the axial direction of the rotating shaft body 31; The mounting plate 321 is installed on the fixing block 322; the fixing block 322 is close to the isolating switch handle 102 relative to the mounting plate 321; the mounting plate 321 and the fixing block 322 are both located in the housing; groove 35, the rotating shaft body 31 can rotate or slide back and forth in the through groove 35; the rotating shaft body 31 is connected on the mounting plate 321, that is, the rotating shaft body 31 can rotate and slide on the mounting plate 321, specifically For the installation method, reference may be made to the prior art.

The fixed block 322 is provided with three accommodating grooves, and the rotating shaft body 31 is provided with a locking tooth 34 radially extending along the rotating shaft body 31; the locking tooth 34 can be switched into any of the three accommodating grooves. One; the switching of the bayonet 34 depends on the translation and rotation of the rotating shaft body 31; a connecting rod 33 is connected to the end of the rotating shaft body 31 located at the inner side of the cabinet door 101; a universal connecting ring is installed on the connecting rod 33 331; the rope 4 is connected to the universal connecting ring 331, and when the rotating shaft body 31 rotates, the connecting rod 33 also rotates; the extending direction of the connecting rod 33 is towards the radial direction of the rotating shaft body 31. When the shaft body 31 rotates, the position of the rope 4 changes, thereby pulling the isolation switch handle 102 .

The three accommodating grooves all communicate with the through groove 35; the accommodating groove one 323 and the accommodating groove two 324 extend along the axial direction of the rotating shaft body 31 and run through the fixed block 322; the accommodating groove one 323 and the second accommodating groove 324 are respectively located on opposite sides of the through groove 35, the first accommodating groove 323 is close to the isolating switch handle 102, and the third accommodating groove 325 is distributed in the fixed block 322 along the radial direction of the rotating shaft body 31, The starting point of the third accommodation groove 325 communicates with the second accommodation groove 324, and the end point is close to the first accommodation groove 323, that is, the projection of the third accommodation groove 325 on the radial direction of the rotating shaft body 31 is in the shape of a fan ring, and the small diameter of the fan ring is the outer diameter of the through groove 35.

The limiting member is used to limit the locking tooth 34 in one of the accommodating grooves and is installed on the end of the rotating shaft body 31; the limiting member includes a limiting spring 36 and a torsion spring 37; the limiting spring 36 Sleeved on the side of the rotating shaft body 31 away from the isolating switch, and fixed on the mounting plate 321; one end of the torsion spring 37 is installed on the fixed block 322, and the other end is installed on the end of the rotating shaft body 31 close to the connecting rod 33 ; In the initial state of the limit spring 36 and the torsion spring 37, the locking tooth 34 is located in the middle position in the accommodation groove 323, and the middle position refers to the position of the accommodation groove 323 in the axial position of the rotating shaft body 31 In the middle; when pressing and rotating the rotating shaft body 31, the locking teeth 34 can enter the accommodation groove 2 324. At this time, the limit spring 36 and the torsion spring 37 are all deformed. After the pressing is released, the locking teeth 34 move to The middle position in the accommodation groove 2 324, when the locking tooth 34 moves to the middle position in the accommodation groove 2 324, the limit spring 36 returns to the initial state, and the torsion spring 37 is still in a twisted state. Under the action of the torsion spring 37 , the locking tooth 34 moves from the second accommodation slot 324 to the end position of the third accommodation slot 325, at this time the torsion spring 37 has not fully recovered to the initial state, so the locking tooth 34 can be limited to the end position of the third accommodation slot 325; The tooth 34 moves from the accommodation slot 1 323 to the accommodation slot 3 325, the position of the connecting rod 33 moves, and the rope 4 returns to its position after being pulled once, thereby pulling the isolating switch handle 102 to realize opening and power-off; , turn the rotating shaft body 31 in the direction of the accommodation groove 2 324, the locking tooth 34 enters the accommodation groove 2 324 from the accommodation groove 3 325, and then presses and rotates the rotating shaft body 31 to make the locking tooth 34 leave the accommodation groove 2 324 and move To the side of the accommodation groove 1 323, at this time, under the reset action of the limit spring 36, the locking tooth 34 returns to the accommodation groove 1 323, that is, the locking tooth 34 enters the accommodation groove 2 324 from the accommodation groove 3 325, After entering the accommodating slot 1 323 , the isolating switch handle 102 is pulled for the second time and returned to its position, thereby completing the closing and electrification.

A handle disc 38 is provided at the end of the rotating shaft body 31 away from the isolating switch handle 102; a jack 381 is arranged on the handle disc 38; The axes are parallel; the position of the bayonet 34 can be known by observing the position of the socket 381, so as to facilitate opening and closing.

Embodiment two,

Please refer to Figures 1-10, the difference between the second embodiment and the first embodiment is that on the basis of retaining the first embodiment, the step surface 21 is provided with a lock body hole 22 for opening and closing the cabinet door 101; when the When the locking teeth 34 are located at the third accommodation slot 325, the isolating switch is in the off state, and the jack 381 is facing the lock body hole 22, so that the operator can open the cabinet door 101 to improve safety.

The working process of the present invention is as follows: when in use, open the cover 23 located on the outer side of the outer protective shell 2 to expose the handle plate 38, press the handle plate 38 and then turn the handle plate 38, at this time the locking teeth 34 are separated from the accommodating groove 1 323, And along with rotating against the second accommodation groove 324, slowly unclamp the handle plate 38, under the effect of the limit spring 36, the locking tooth 34 is positioned at the middle position of the accommodation groove two 324, unclamp the handle plate 38 completely, and twist Under the action of the spring 37, the locking tooth 34 enters the terminal position of the accommodation groove three 325, and at this moment completes a pulling of the isolating switch handle 102 to realize the disconnection and power-off of the isolating switch handle 102; Insert the key, the key is inserted in the lock body hole 22, thereby open the cabinet door 101;

Embodiment three,

Please refer to Fig. 1-10, the difference between the third embodiment and the second embodiment is that on the basis of retaining the second embodiment, the said rope 4 is provided with a buffer spring 41; When the groove three 325, the pulling force one of the connecting rod 33 to the rope 4 and the locking tooth 34 are located at the first accommodating groove 323, the pulling force two of the connecting rod 33 to the rope 4 is consistent; the cabinet body 1 is provided with a limit rope 4 to move Direction roller assembly 5, said roller assembly 5 includes a first direction roller 51 and a second direction roller 52 perpendicular to the axis of the first direction roller 51; a roller assembly 5 is provided at a position close to the isolation switch, and the roller assembly 5 can ensure For the normal opening and closing of the isolating switch, the structure of the roller assembly 5 can refer to the prior art.

Embodiment four,

Please refer to Fig. 1-10, which shows a switchgear including the above-mentioned interlocking protection mechanism.

It should be noted that "up, down, left, right, inside, and outside" in the present invention are defined based on the relative positions of the components in the figure, and are only for the clarity and convenience of describing the technical solution. It should be understood that the The application of orientation words does not limit the protection scope of this application.

The above-mentioned implementations are all preferred implementations, and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing examples, those skilled in the art can still describe the foregoing implementations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims (9)

1. The utility model provides a cubical switchboard interlocking protection mechanism which characterized in that: the method comprises the following steps:

the outer protective shell is arranged on the cabinet door in a penetrating way, and two ends of the outer protective shell are opened; a step surface is arranged in the outer protective shell;

the disconnecting switch control mechanism comprises a rope connected with a disconnecting switch handle and a driving mechanism for controlling the rope to pull so as to open or close the disconnecting switch; the isolating switch handle is arranged in the switch cabinet operating room; the driving mechanism is arranged in the outer protective shell in an inserting mode;

the driving mechanism comprises an installation block, a rotating shaft body and a limiting piece; the mounting block is mounted in the outer protective shell; the end part of the rotating shaft body, which is positioned at the inner side of the cabinet door, is connected with a connecting rod connected with a rope; the rotating shaft body is arranged in the mounting block; the rotating shaft body is also provided with a latch; three accommodating grooves are formed in the mounting block; the limiting piece is used for limiting the latch in one of the accommodating grooves and is arranged at the end part of the rotating shaft body; when the rotation axis body rotation or translation in the installation piece, the latch can switch into in the three storage tank to the connecting rod pulls the isolator handle after removing.

2. The interlocking protection mechanism for the switch cabinet as claimed in claim 1, wherein the mounting block comprises a mounting plate and a fixing block which are fixed together from left to right; the fixed block is close to the isolating switch handle; the accommodating groove is positioned in the fixed block; the rotating shaft body is connected to the mounting plate in a penetrating way; a through groove for accommodating the rotating shaft body is formed in the fixed block; the through grooves are communicated with the three accommodating grooves.

3. The switch cabinet interlocking protection mechanism according to claim 2, wherein the first accommodating groove and the second accommodating groove are respectively located at two opposite sides of the through groove, and the first accommodating groove is close to the isolating switch handle; the first accommodating groove and the second accommodating groove penetrate through the fixing block along the axial direction of the rotating shaft body; the containing groove III is distributed in the fixed block along the radial direction of the rotating shaft body, the starting point of the containing groove III is communicated with the containing groove II, and the end point is close to the containing groove I; when the latch enters the second accommodating groove from the first accommodating groove, the connecting rod moves to pull the handle of the isolating switch to open; when the latch enters the second accommodating groove from the third accommodating groove, the connecting rod moves to pull the isolating switch handle to switch on.

4. The switch cabinet interlocking protection mechanism according to claim 3, wherein the limiting member comprises a limiting spring and a torsion spring; the limiting spring is sleeved on one side, away from the isolating switch handle, of the rotating shaft body and is fixed on the mounting plate; one end of the torsion spring is installed on the fixed block, and the other end of the torsion spring is installed at the end part, close to the connecting rod, of the rotating shaft body; under the elastic force action of the limiting spring and the torsion spring, the latch is positioned in the middle of the first accommodating groove; when the rotating shaft body is pressed and rotated, the latch can enter the second accommodating groove and reach the middle position of the second accommodating groove after the limiting spring is reset; when the latch is located in the middle of the second accommodating groove, the torsion spring can drive the latch to rotate to the end point of the third accommodating groove.

5. The interlocking protection mechanism of the switch cabinet as claimed in claim 4, wherein the stepped surface is provided with a lock body hole for opening and closing the cabinet door; a handle disc is arranged at the end part of the rotating shaft body deviating from the isolating switch handle; the handle disc is provided with a jack; the connecting line of the jack and the latch is parallel to the axis of the rotating shaft body; when the latch is positioned in the third accommodating groove, the jack is over against the lock body hole.

6. The interlocking protection mechanism for switch cabinets of any of claims 1-5, wherein a cover is removably attached to the outer protective shell at the outer end of the cabinet door.

7. The switch cabinet interlocking protection mechanism according to claim 6, wherein a buffer spring is arranged on the rope; the connecting rod is provided with a universal connecting ring connected with the rope; and a roller assembly for limiting the moving direction of the rope is arranged in the cabinet body of the switch cabinet.

8. The switch cabinet interlock protection mechanism of claim 7, wherein the roller assembly comprises a first directional roller and a second directional roller perpendicular to the axis of the first directional roller.

9. A switchgear cabinet comprising the interlock protection mechanism of claim 6.

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