Mechanical interlocking device for cable compartment of environment-friendly gas-insulated switchgear

Abstract

The invention discloses a mechanical interlocking device for a cable compartment of an environment-friendly gas-insulated switchgear, which comprises a shell, a pin bush is welded at the upper part of the outer wall of the shell, a rotating shaft is rotatably connected to the inner wall of the shell, a knob is fixedly connected to one end, extending out of the shell, of the rotating shaft, and a transmission shaft is rotatably connected to the lower part of the shell. The right end of the transmission shaft is connected with a pulling plate, the left end of the transmission shaft abuts against a door plate, the door plate is detachably installed on the rotating shaft, the middle of the outer wall of the transmission shaft is connected with a blocking piece, a spring is installed between the blocking piece and the right side wall of the shell, and a connecting plate is hinged to the outer wall of the transmission shaft. A transmission output shaft is hinged to the end part of the connecting plate; the device is reasonable in structural design, has the characteristics of pure mechanical performance, low installation cost, convenience in installation and the like, greatly improves the safety coefficient, and is suitable for popularization and application.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical interlocking devices, and in particular to a mechanical interlocking device for a cable compartment of an environment-friendly inflatable cabinet. Background Art

[0002] With the continuous advancement of science and technology, human beings have higher and higher requirements for power distribution products. Green environmental protection, energy saving, intelligence, maintenance-free, high reliability and low cost have become the development direction of switchgear. In this context, environmentally friendly inflatable cabinets have become one of the main development directions. At present, existing environmentally friendly inflatable cabinets mostly use electrical interlocks in the cable compartment. The electrical interlock requires a separate power supply circuit and is independent of other electrical circuits. Although it is easier to achieve the interlocking reaction between the cable compartment and the three-station and circuit breaker, after the electrical interlock circuit is powered off, the interlocking relationship between the cable compartment and the three-station and circuit breaker will fail, resulting in uninformed operation, thereby causing safety accidents.

[0003] In order to solve the problem that the existing environmentally friendly inflatable cabinet cable compartment only has electrical interlocking and lacks a highly reliable mechanical interlocking, thus causing a series of safety problems caused by the lack of a mechanical interlocking device, the present invention proposes a mechanical interlocking device for the cable compartment of an environmentally friendly inflatable cabinet. Summary of the invention

[0004] The purpose of the present invention is to provide a mechanical interlocking device for a cable compartment of an environmentally friendly inflatable cabinet to overcome the technical problems existing in the prior art.

[0005] In order to achieve the above technical objectives and the above technical effects, the present invention provides the following technical solutions:

[0006] A mechanical interlocking device for a cable compartment of an environmentally friendly inflatable cabinet comprises a shell, a pin sleeve is welded to the upper portion of the outer wall of the shell, a rotating shaft is rotatably connected to the inner wall of the shell, one end of the rotating shaft extending out of the shell is fixedly connected to a knob, a transmission shaft is rotatably connected to the lower portion of the shell, the transmission shaft is located below the rotating shaft, a pull plate is connected to the right end of the transmission shaft, a door panel is abutted against the left end of the transmission shaft, the door panel is detachably mounted on the rotating shaft, a baffle is connected to the middle portion of the outer wall of the transmission shaft, a spring is installed between the baffle and the right side wall of the shell, a connecting plate is hinged to the outer wall of the transmission shaft, and a transmission output shaft is hinged to the end of the connecting plate.

[0007] Preferably, in a mechanical interlocking device of an environmentally friendly inflatable cabinet cable compartment, a pull rope auxiliary plate is welded to the upper part of the outer shell, two pin sleeves are provided, a three-station connecting pin is movably inserted in the middle pin sleeve, a pull rope 2 is connected to the top of the three-station connecting pin, and the other end of the pull rope 2 is connected to the three-station grounding position through the pull rope auxiliary plate.

[0008] Preferably, in a mechanical interlocking device of an environmentally friendly inflatable cabinet cable compartment, a transmission output shaft is movably inserted into the pin sleeve on the side, a pull rope 1 is connected to the top of the transmission output shaft, and the other end of the pull rope 1 is connected to the circuit breaker opening position through a pull rope auxiliary plate.

[0009] Preferably, in a mechanical interlocking device of an environmentally friendly inflatable cabinet cable compartment, the outer wall of the rotating shaft is provided with a recessed portion, the recessed portion of the outer wall of the rotating shaft is connected to a circuit breaker connecting plate, the top of the circuit breaker connecting plate is connected to a pull rope three, and the other end of the pull rope three is connected to the circuit breaker closing position through a pull rope auxiliary plate.

[0010] Preferably, in a mechanical interlocking device of a cable compartment of an environmentally friendly inflatable cabinet, a pull rope four is connected to the outer wall of the pull plate, and the other end of the pull rope four is connected to the circuit breaker opening position.

[0011] Preferably, in a mechanical interlocking device of a cable compartment of an environmentally friendly inflatable cabinet, a clearance opening is provided on the door panel, and the opening area of ​​the clearance opening is larger than the surface area of ​​the corresponding surface of the knob.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The present invention adopts an integrated design, and the pull rope auxiliary plate and the pin sleeve are welded and fixed on the surface of the shell, with a stable structure. The circuit breaker connecting plate, rotating shaft, knob, transmission shaft, connecting plate, transmission output shaft, spring, baffle, pull plate and other components form a complete interlocking device, which can realize the mechanical interlocking between three workstations, circuit breakers and cable compartment door panels. The present invention provides an environmentally friendly inflatable cabinet with a solution for the mechanical interlocking device of the cable compartment of the environmentally friendly inflatable cabinet, which has the characteristics of pure mechanical performance, low installation cost, convenient installation, etc., greatly improves the safety factor, and is suitable for popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the description of the specific implementation methods will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 ;

[0016] Figure 2 The overall structure of the present invention is shown in FIG. Figure 2 ;

[0017] Figure 3 This is a schematic diagram of the structure of the present invention without removing the door panel;

[0018] Figure 4 It is a rear view structural diagram of the present invention;

[0019] Figure 5 It is a structural schematic diagram of the transmission shaft in the present invention;

[0020] Figure 6 It is a schematic diagram of the structure of the knob shaft in the present invention;

[0021] Figure 7 It is a schematic diagram of the structure of the housing in the present invention;

[0022] Figure 8 It is a structural schematic diagram of the pull rope auxiliary plate in the present invention;

[0023] Fig. 9 It is a schematic diagram of the side structure of the door panel in the present invention.

[0024] In the figure: 1. Pull rope one; 2. Pull rope two; 3. Pull rope three; 4. Pull rope four; 5. Three-station connecting pin; 6. Pull rope auxiliary plate; 7. Knob; 8. Knob shaft; 9. Circuit breaker connecting plate; 10. Transmission output shaft; 11. Connecting plate; 12. Transmission shaft; 13. Spring; 14. Pull plate; 15. Door panel; 16. Pin sleeve; 17. Housing; 18. Baffle. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] See also Figure 1-9 As shown, this embodiment is a mechanical interlocking device for a cable compartment of an environmentally friendly inflatable cabinet, comprising a shell 17, a pin sleeve 16 is welded to the upper portion of the outer wall of the shell 17, a rotating shaft 8 is rotatably connected to the inner wall of the shell 17, one end of the rotating shaft 8 extending out of the shell 17 is fixedly connected to a knob 7, a transmission shaft 12 is rotatably connected to the lower portion of the shell 17, the transmission shaft 12 is located below the rotating shaft 8, a pull plate 14 is connected to the right end of the transmission shaft 12, a door panel 15 is abutted against the left end of the transmission shaft 12, the door panel 15 is detachably mounted on the rotating shaft 8, a baffle 18 is connected to the middle portion of the outer wall of the transmission shaft 12, a spring 13 is installed between the baffle 18 and the right side wall of the shell 17, a connecting plate 11 is hinged to the outer wall of the transmission shaft 12, and a transmission output shaft 10 is hinged to the end of the connecting plate 11.

[0027] A pull rope auxiliary plate 6 is welded to the upper part of the shell 17, and two pin sleeves 16 are provided to ensure that the three-station connecting pin 5 and the transmission output shaft 10 can move up and down in a straight line. The three-station connecting pin 5 is movably inserted in the middle pin sleeve 16, and the top of the three-station connecting pin 5 is connected to a pull rope 2, and the other end of the pull rope 2 is connected to the three-station grounding position through the pull rope auxiliary plate 6. When the three-station is in the grounding position, the pull rope 2 is tightened, and the three-station connecting pin 5 is lifted up by force. When the three-station is not in the grounding position, the pull rope 2 is loosened, and the three-station connecting pin 5 falls down without force.

[0028] The pin sleeve 16 on the side is movably inserted into the transmission output shaft 10, and the top of the transmission output shaft 10 is connected with a pull rope 1, and the other end of the pull rope 1 is connected to the circuit breaker opening position through the pull rope auxiliary plate 6. When the pull rope 1 is in a tightened state, the circuit breaker opening position is locked and the circuit breaker cannot be opened. When the pull rope 1 is in a relaxed state, the circuit breaker opening position is unlocked and the circuit breaker can be closed and opened.

[0029] The outer wall of the rotating shaft 7 is provided with a recessed portion, and the recessed portion of the outer wall of the rotating shaft 7 is connected to a circuit breaker connecting plate 9. A pull rope 3 3 is connected to the top of the circuit breaker connecting plate 9. The other end of the pull rope 3 3 is connected to the circuit breaker closing position through a pull rope auxiliary plate 6. When the circuit breaker is in the closing position, the pull rope 3 3 is tightened, and the circuit breaker connecting plate 9 is tightened. When the circuit breaker is in the opening position, the pull rope 3 3 is loosened, and the circuit breaker connecting plate 9 is not subjected to force.

[0030] The outer wall of the pull plate 14 is connected to a pull rope 44, and the other end of the pull rope 44 is connected to the circuit breaker opening position. When the pull rope 44 is in a tightened state, the circuit breaker opening position is locked and the circuit breaker cannot be opened; when the pull rope 44 is in a loose state, the circuit breaker opening position is unlocked and the circuit breaker can be closed and opened. In actual use, only one of the pull ropes can be selected, that is, the pull rope 1 or the pull rope 44.

[0031] The door panel 15 is provided with a clearance opening, the opening area of ​​which is larger than the surface area of ​​the corresponding surface of the knob 7, so that the door panel 15 can be loaded and unloaded after the knob 7 is rotated to the corresponding clearance opening.

[0032] The specific implementation of this embodiment is as follows:

[0033] In this embodiment, the knob 7 is fixedly connected to one end of the rotating shaft 8. The knob 7 is manually rotated in the direction of rotation, and the rotating shaft 8 is driven to rotate a certain angle at the same time. The other end of the rotating shaft 8 is rotatably connected to the inner wall of the shell 17 to ensure that the rotating shaft 8 can rotate smoothly. The circuit breaker connecting plate 9 is installed in the concave part of the rotating shaft 8. When the rotating shaft rotates, the circuit breaker connecting plate 9 makes a circular motion. The rotation angle of the knob 7 is the same as the movement angle of the circuit breaker connecting plate 9. The pull plate 14 is installed at one end of the transmission shaft 12, and the other end abuts the end door plate 15. The shell 17 is connected to the stopper. A spring 13 is installed between the plates 18, and the transmission shaft 12, the connecting plate 11 and the transmission output shaft 12 are connected to form a connecting rod structure, so that the transmission shaft 12 and the transmission output shaft 10 can only move linearly. When the transmission shaft 12 is subjected to pressure, the spring 13 will be compressed, causing the spring 13 to undergo elastic deformation. When the transmission shaft 12 loses pressure, the spring 13 will release its elastic force, causing the transmission shaft 12 to pop out. At the same time, when the transmission shaft 12 moves linearly, it will drive the connecting plate 11 to move, and the connecting plate 11 will drive the transmission output shaft 10 to move up and down;

[0034] When the interlocking device is locked, the door panel 15 is in the closed state:

[0035] ① When the pull rope 2 and the pull rope 3 are loosened, the three-station connecting pin 5 falls down and locks the rotating shaft 8 so that it does not rotate;

[0036] ② When the pull rope 2 is loosened and the pull rope 3 is tightened, the circuit breaker connecting plate 11 is subjected to force to lock the rotating shaft 8 and prevent it from rotating.

[0037] When the interlocking device is in the locked state, the knob 7 will lock the door panel 15, and the door panel 15 will not be opened. At the same time, the door panel 15 will compress the spring 13, and the pull rope 1 and the pull rope 4 will be in the relaxed state.

[0038] When the interlock device is unlocked:

[0039] The pull rope 2 2 is tightened and the pull rope 3 3 is loosened, the three-station connecting pin 5 rises to unlock the rotating shaft 8, and the knob 7 is rotated in the rotation direction by manpower, the knob 7 will unlock the door panel 15, and the door panel 15 will open. At the same time, after the door panel 15 is taken out, the spring 13 releases the elastic force, and the pull rope 1 and the pull rope 4 4 ​​are in a tightened state.

[0040] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0041] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A mechanical interlocking device for a cable compartment of an environmentally friendly inflatable cabinet, comprising a housing (17), characterized in that: A pin sleeve (16) is welded to the upper part of the outer wall of the shell (17); a rotating shaft (8) is rotatably connected to the inner wall of the shell (17); one end of the rotating shaft (8) extending out of the shell (17) is fixedly connected to a knob (7); a transmission shaft (12) is rotatably connected to the lower part of the shell (17); the transmission shaft (12) is located below the rotating shaft (8); a pull plate (14) is connected to the right end of the transmission shaft (12); a door plate (15) is abutted against the left end of the transmission shaft (12); the door plate (15) is detachably mounted on the rotating shaft (8); a baffle (18) is connected to the middle part of the outer wall of the transmission shaft (12); a spring (13) is installed between the baffle (18) and the right side wall of the shell (17); a connecting plate (11) is hinged to the outer wall of the transmission shaft (12); a transmission output shaft (10) is hinged to the end of the connecting plate (11).

2. The mechanical interlocking device of the cable compartment of the environmentally friendly inflatable cabinet according to claim 1 is characterized in that: A pull rope auxiliary plate (6) is welded to the upper part of the shell (17), and two pin sleeves (16) are provided. A three-station connecting pin (5) is movably inserted into the middle pin sleeve (16), and a pull rope 2 (2) is connected to the top of the three-station connecting pin (5). The other end of the pull rope 2 (2) is connected to the three-station grounding position through the pull rope auxiliary plate (6).

3. The mechanical interlocking device of the cable compartment of the environmentally friendly inflatable cabinet according to claim 1 is characterized in that: The pin sleeve (16) on the side is movably inserted into the transmission output shaft (10), and the top of the transmission output shaft (10) is connected to a pull rope (1), and the other end of the pull rope (1) is connected to the circuit breaker opening position through a pull rope auxiliary plate (6).

4. The mechanical interlocking device of the cable compartment of the environmentally friendly inflatable cabinet according to claim 1 is characterized in that: The outer wall of the rotating shaft (7) is provided with a recessed portion, the recessed portion of the outer wall of the rotating shaft (7) is connected to a circuit breaker connecting plate (9), the top of the circuit breaker connecting plate (9) is connected to a pull rope three (3), and the other end of the pull rope three (3) is connected to the circuit breaker closing position via a pull rope auxiliary plate (6).

5. The mechanical interlocking device of the cable compartment of the environmentally friendly inflatable cabinet according to claim 1 is characterized in that: The outer wall of the pull plate (14) is connected to a pull rope four (4), and the other end of the pull rope four (4) is connected to the circuit breaker opening position.

6. The mechanical interlocking device of the cable compartment of the environmentally friendly inflatable cabinet according to claim 1 is characterized in that: The door panel (15) is provided with a clearance opening, and the opening area of ​​the clearance opening is larger than the surface area of ​​the corresponding surface of the knob (7).

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