CN110224308B

CN110224308B - Switch cabinet

Info

Publication number: CN110224308B
Application number: CN201910475791.6A
Authority: CN
Inventors: 叶志勇; 李剑胜; 袁宏志; 余其贵; 何志华; 林明瑞
Original assignee: Xiamen Huadian Switchgear Co Ltd
Current assignee: Xiamen Huadian Switchgear Co Ltd
Priority date: 2019-06-03
Filing date: 2019-06-03
Publication date: 2024-04-26
Anticipated expiration: 2039-06-03
Also published as: CN110224308A

Abstract

The invention relates to the technical field of switch equipment, in particular to a switch cabinet. The novel lock comprises a cabinet body, a lock shaft interlocking unit and a rotatable ground knife main shaft, wherein the lock shaft interlocking unit and the rotatable ground knife main shaft are arranged in the cabinet body; the lock shaft interlocking unit comprises an operation handle, a first baffle, a lock shaft pin, an elastic piece, a lock shaft connecting rod assembly and a sliding plate; the operating handle is fixed at the outer end part of the ground knife main shaft; the first baffle is arranged on the mounting plate; the lock shaft pin penetrates through the first baffle, and a first baffle ring is arranged on the lock shaft pin; the elastic piece is sleeved on the lock shaft pin and is positioned between the first baffle ring and the first baffle plate; the lock shaft connecting rod assembly is arranged on the mounting plate, and the bottom end of the lock shaft connecting rod assembly is connected with the inner end of the lock shaft pin; the sliding plate is connected to the top end of the lock shaft connecting rod assembly, a locking hole is formed in the sliding plate, and the operating handle penetrates through the locking hole. Effectively avoid carrying out the brake operation under the state of opening the door, guaranteed staff's safety.

Description

Switch cabinet

Technical Field

The invention relates to the technical field of switch equipment, in particular to a switch cabinet.

Background

Currently, a common high-voltage switch cabinet on the market comprises a cabinet body, a cable chamber door hinged on the cabinet body, a ground knife main shaft arranged in the cabinet body, and an interlocking device. The cam is fixed on the ground knife main shaft. A mounting plate is fixed on the inner side surface of the cable chamber door and perpendicular to the height direction of the cable chamber door, through holes are formed in the mounting plate, and the mounting plate is located below the cam.

The interlocking device comprises a shell, a movable rod vertically penetrating through the shell, a pressure spring arranged on the movable rod and a fixed plate fixed at the top end of the movable rod. The upper and lower both ends of movable rod are outstanding top surface and the bottom surface of shell respectively, and the movable rod can go up and down for the shell. The pressure spring is arranged in the shell, one end of the pressure spring is connected with the movable rod, and the other end of the pressure spring is connected with the inner wall of the shell, so that the movable rod has a trend of moving upwards, the fixed plate is always abutted with the cam, and the movable rod stretches into the through hole or breaks away from the through hole along with the rotation of the cam. After the grounding switch is adjusted to a closing state and the cable chamber door is opened, the grounding switch can still be operated, and the safety of staff nearby the switch cabinet is difficult to ensure.

Disclosure of Invention

The invention aims to provide a switch cabinet, which solves the problems that after a cable chamber door of the existing switch cabinet is opened, a grounding switch can still be operated, and the safety of staff nearby the switch cabinet is difficult to ensure.

The aim of the invention is realized by the following technical scheme:

The invention provides a switch cabinet which comprises a cabinet body, a lock shaft interlocking unit and a rotatable ground knife main shaft, wherein the lock shaft interlocking unit and the rotatable ground knife main shaft are arranged in the cabinet body; the lock shaft interlocking unit comprises an operation handle, a first baffle, a lock shaft pin, an elastic piece, a lock shaft connecting rod assembly and a sliding plate; the operating handle is fixed at the outer end part of the ground knife main shaft; the first baffle is arranged on the mounting plate; the lock shaft pin penetrates through the first baffle plate, the lock shaft pin can move along the width direction of the mounting plate, the outer end of the lock shaft pin can be abutted against the inner side surface of the door body, and a first baffle ring is arranged on the lock shaft pin; the elastic piece is sleeved on the lock shaft pin and is positioned between the first baffle ring and the first baffle plate, and the elastic piece is blocked by the first baffle plate; the lock shaft connecting rod assembly is arranged on the mounting plate, and the bottom end of the lock shaft connecting rod assembly is connected to the inner end of the lock shaft pin so as to move up and down along with the movement of the lock shaft pin; the sliding plate is connected to the top end of the lock shaft connecting rod assembly, the sliding plate can move up and down along with the lock shaft connecting rod assembly to lift, a locking hole is formed in the sliding plate, the operating handle penetrates through the locking hole, the sliding plate can move downwards to limit the movement of the operating handle so as to prevent the ground knife main shaft from rotating, and the sliding plate can move upwards to cancel the limitation of the operating handle.

In one embodiment, the lock shaft connecting rod assembly comprises a first crank arm, a lock shaft connecting piece and a swing arm; the first crank arm is rotatably arranged on the mounting plate, one end of the first crank arm is connected to the inner end of the lock shaft pin, and the first crank arm rotates along with the movement of the lock shaft pin; the bottom end of the lock shaft connecting piece is connected to the other end of the first crank arm, and the lock shaft connecting piece ascends and descends along with the rotation of the first crank arm; the swing arm rotatable set up in on the mounting panel, the both ends of swing arm are inner and outer end respectively, the inner of swing arm for the outer end of swing arm is kept away from the door frame, the inner of swing arm with the top of lock axle connecting rod is connected, the outer end of swing arm with the sliding plate is connected, the swing arm is followed the lift of lock axle connecting piece is swung.

In one embodiment, the lock shaft connecting piece comprises a first lock shaft body, a second lock shaft body, a lock shaft plate body and a lock shaft guide piece; the first lock shaft body is connected with the first crank arm; the second lock shaft body is connected with the swing arm; the upper end and the lower end of the lock shaft plate body are respectively connected with the first lock shaft body and the second lock shaft body, the lock shaft plate body is provided with a lock shaft guide hole, the lock shaft guide hole is strip-shaped, and the length direction of the lock shaft guide hole is parallel to the height direction of the mounting plate; the lock shaft guide penetrates through the lock shaft guide hole and is fixed to the mounting plate.

In one embodiment, a tension spring is mounted on the mounting plate, the tension spring is located below the swing arm, the top end of the tension spring is connected to the inner end of the swing arm, and the bottom end of the tension spring is connected to the mounting plate.

In one embodiment, the lock shaft connecting rod assembly comprises a first crank arm, a lock shaft connecting piece and a fixed rod; the first crank arm is rotatably arranged on the mounting plate, one end of the first crank arm is connected to the inner end of the lock shaft pin, and the first crank arm rotates along with the movement of the lock shaft pin; the bottom end of the lock shaft connecting piece is connected to the other end of the first crank arm, and the lock shaft connecting piece ascends and descends along with the rotation of the first crank arm; the two ends of the fixed rod are respectively an inner end and an outer end, the inner end of the fixed rod is far away from the door frame relative to the outer end of the fixed rod, the inner end of the fixed rod is fixedly connected with the lock shaft connecting piece, the outer end of the fixed rod is fixedly connected with the sliding plate, and the fixed rod and the lock shaft connecting piece form an inclined angle.

In one embodiment, the lock shaft interlocking unit further comprises a mounting seat fixed on the door frame, a sliding groove is formed in the mounting seat, and the sliding plate is inserted into the sliding groove and is in sliding connection with the mounting seat.

In one embodiment, the mounting seat is provided with a mounting hole, the mounting hole is communicated with the bottom of the chute, and the mounting hole is communicated with the locking hole; the operating handle is positioned in the mounting hole and can move in the mounting hole.

In one embodiment, the sliding plate is provided with a strip hole, and the length direction of the strip hole is approximately parallel to the length direction of the chute; the mounting seat is fixedly provided with a guide block, and the guide block is positioned in the strip hole.

In one embodiment, the locking hole and the mounting hole are rectangular, and the lower side of the mounting hole and the lower side of the locking hole are approximately perpendicular to the height direction of the mounting plate.

In one embodiment, the operation handle is fixed on the edge part of the end face of the earth-boring cutter main shaft; when the ground knife main shaft is switched on, the operating handle is positioned below the axis of the ground knife main shaft; when the ground knife main shaft is switched off, the operating handle is positioned above the axis of the ground knife main shaft.

In one embodiment, the operating handle is fixed on the end face of the outer end of the ground knife main shaft, and the operating handle is in clamping fit with the upper part of the locking hole.

In one embodiment, the door frame is provided with a clamping part, the inner side surface of the door body is fixed with a clamping piece, the clamping piece is matched with the lower part of the clamping part in a clamping way, and the clamping piece can be separated from the upper part of the clamping part; the door body is in sliding connection with the door frame, so that the door body can be lifted relative to the cabinet body, and when the door body is closed, the clamping piece moves to the upper part or the lower part of the clamping part along with the lifting of the door body; the switch cabinet further comprises a door locking interlocking unit arranged on the mounting plate, wherein the door locking interlocking unit comprises a limiting piece fixed on the inner side surface of the door body, a cam fixed on the ground knife main shaft, a door locking connecting rod abutted with the cam, a second crank arm rotatably arranged on the mounting plate, a second baffle plate arranged on the mounting plate, a blocking pin approximately parallel to the width direction of the mounting plate, a second blocking ring fixed on the blocking pin and a pressure spring sleeved on the blocking pin; the second baffle is approximately parallel to the height direction of the mounting plate, the blocking pin penetrates through the second baffle, the blocking pin can move along the width direction of the mounting plate, the door locking connecting rod is located below the cam, one end of the second crank arm is connected with the door locking connecting rod, the other end of the second crank arm is connected with the inner end of the blocking pin, the second blocking ring is located between the second baffle and the outer end of the blocking pin, two ends of the pressure spring are respectively connected with the second blocking ring and the second baffle, the second baffle blocks the pressure spring, and the blocking pin can move outwards or inwards to block the limiting piece from moving upwards or cancel blocking.

In one embodiment, the door locking connecting rod is provided with a door locking guide hole, the door locking guide hole is in a strip shape, and the length direction of the door locking guide hole is approximately parallel to the height direction of the mounting plate; the mounting plate is fixedly provided with a door locking guide piece, and the door locking guide piece is positioned in the door locking guide hole.

According to the technical scheme, the invention has the advantages and positive effects that: in the initial state, the grounding switch is switched off, the door body is closed, the lock shaft pin is extruded by the door body, the elastic piece is elastically deformed, and the sliding plate moves upwards without limiting the movement of the operating handle; after the door body is opened, the lock shaft pin moves outwards under the action of the elastic piece, the lock shaft connecting rod assembly moves, the sliding plate moves downwards and acts on the operating handle to limit the movement of the operating handle, so that the opening operation is avoided under the state of opening the door, and the safety of staff is ensured.

Drawings

For ease of illustration, the invention is described in detail by the following preferred embodiments and the accompanying drawings.

FIG. 1 is a schematic diagram of a switchgear cabinet embodiment of the present invention;

FIG. 2 is a schematic diagram of the structure of the switch cabinet when the door is closed;

FIG. 3 is a side view of the switch cabinet shown in FIG. 2;

Fig. 4 is a schematic structural view of a lock shaft interlocking unit of the switch cabinet shown in fig. 2;

FIG. 5 is a side view of the lock shaft interlocking unit shown in FIG. 4;

FIG. 6 is a schematic view of the structure of the switch cabinet of the present invention when the door is opened;

FIG. 7 is a side view of the switch cabinet shown in FIG. 6;

FIG. 8 is a schematic diagram of a lock shaft interlocking unit of the switch cabinet shown in FIG. 6;

Fig. 9 is a side view of the lock shaft interlocking unit shown in fig. 8.

Description of the reference numerals: 1. a cabinet body; 11. a ground cutter main shaft; 12. a door frame; 13. a door body; 14. a mounting plate; 2. a lock shaft interlocking unit; 21. an operation handle; 22. a lock shaft connecting rod assembly; 221. a lock shaft connecting rod; 222. a first lever; 223. a lock shaft connection; 2231. a first lock shaft body; 2232. a second lock shaft body; 2233. a lock shaft plate body; 224. swing arms; 225. a lock shaft suspender; 226. a lock shaft guide; 227. a lock shaft guide hole; 23. a mounting base; 231. a chute; 232. a mounting hole; 233. a guide block; 24. a sliding plate; 241. a locking hole; 242. a strip hole; 25. a lock shaft pin; 251. a first baffle ring; 26. an elastic member; 27. a first baffle; 28. a limiting plate; 29. a tension spring; 3. a door locking interlocking unit; 31. a cam; 32. a first door locking link; 321. locking the door guide hole; 33. a blocking pin; 331. a second baffle ring; 34. a limiting piece; 35. locking the door guide; 36. a second baffle; 37. a second compression spring; 38. locking the door crank arm; 39. and a second door locking connecting rod.

Detailed Description

The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present invention, it should be noted that the terms "mounted," "connected," and "coupled" are to be construed broadly, as well as, for example, fixedly coupled, detachably coupled, or integrally coupled, unless otherwise specifically indicated and defined. Either mechanically or electrically. Can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

The invention provides a switch cabinet which is used for realizing the interlocking of a grounding switch and a door body, so that the door body cannot be opened when the grounding switch is opened, and the grounding switch cannot be opened when the door body is opened, thereby effectively ensuring the safety of staff.

Referring to fig. 1 and 2, in the present embodiment, the switch cabinet includes a cabinet body 1, and a grounding switch (not shown), a lock shaft interlocking unit 2 and a lock door interlocking unit 3 installed in the cabinet body 1.

The cabinet 1 is substantially cubic. A door frame 12 is fixed on the cabinet body 1, a door body 13 is rotatably connected to the side part of the door frame 12, and the door frame 12 is slidably connected with the door body 13.

Specifically, a shaft (not shown) is fixed to a side portion of the door 13, and the shaft is substantially parallel to the height direction of the door 13. A rotating sleeve (not shown) is fixed to the side of the door frame 12, and the rotating sleeve is rotatably connected to the shaft and slidably connected to the shaft, so that the door body 13 can move up and down along the shaft.

The door frame 12 is provided with a locking portion (not shown), specifically, a locking groove. The width of the bottom end of the clamping groove is smaller than that of the top end, and the clamping groove gradually widens from bottom to top. The upper part of the clamping groove corresponds to the movable position, and the lower part of the clamping groove corresponds to the locking position.

The door body 13 is fixed with a clamping piece (not shown), the clamping piece comprises a bolt, the bolt comprises a screw rod and a head, the screw rod of the bolt is fixed on the inner side surface of the door body 13, and the width of the head of the bolt is larger than the width of the lower part of the clamping groove and smaller than the width of the upper part of the clamping groove.

When the door body 13 is closed, the screw of the bolt penetrates through the clamping groove, and the bolt can move to the movable position and the locking position of the clamping groove along with the up-and-down movement of the door body 13. When the bolt moves to the movable position of the clamping groove, the head of the bolt can pass through the clamping groove, and the door body 13 is movably covered on the opening of the door frame. When the bolt moves to the locking position of the clamping groove, the bolt is clamped with the cabinet body 1, so that the door body 13 and the cabinet body 1 are relatively fixed.

A mounting plate 14 is fixed to the inner side surface of the cabinet 1, specifically, one surface of the mounting plate 14 is fixed to the cabinet 1, and the mounting plate 14 is substantially parallel to the side plates of the connected cabinet 1.

The grounding switch comprises a grounding knife main shaft 11 rotatably connected to a mounting plate 14, and the grounding knife main shaft 11 is positioned above a door body 13. The length direction of the earth-boring cutter spindle 11 is substantially parallel to the width direction of the mounting plate 14.

The ground knife main shaft 11 is sleeved with a brake block, the brake block comprises an arc-shaped part, the radian of the outer side edge of the arc-shaped part is approximately 180 degrees, and the brake block rotates along with the rotation of the ground knife main shaft 11.

A limiting block (not shown) is fixed in the cabinet body 1, so that the ground knife main shaft 11 can only rotate 180 degrees, and the grounding switch can be switched between the closing state and the opening state stably.

Referring to fig. 1 to 9, the lock shaft interlocking unit 2 includes an operation handle 21 fixed to an end surface of the earth-boring cutter spindle 11, a lock shaft link assembly 22 provided on the mounting plate 14, a lock shaft pin 25 connected to a bottom end of the lock shaft link assembly 22, a slide plate 24 connected to a top end of the lock shaft link assembly 22, and a mounting seat 23 fixed to the door frame 12.

A first baffle 27 is fixed on the mounting plate 14, and the first baffle 27 includes a first connection plate and a first vertical plate perpendicular to the first connection plate, and the first connection plate is fixed on the mounting plate 14. The first vertical plate is perpendicular to the mounting plate 14, and a through hole is formed in the first vertical plate, and the first vertical plate is perpendicular to the lock shaft pin. The first baffle 27 may be an L-shaped angle iron.

It will be appreciated that the first baffle 27 may also be a vertical plate welded perpendicularly to the mounting plate 14.

The length direction of the lock pin 25 is substantially parallel to the width direction of the mounting plate 14, and the lock pin 25 is movable in the width direction of the mounting plate 14. The lock pin 25 has an outer end and an inner end. The inner end of the lock pin 25 penetrates through the through hole of the first shutter 27. The outer end of the lock pin 25 can abut against the door body 13, that is, when the door body 13 is closed, the outer end of the lock pin 25 abuts against the inner side surface of the door body 13, and when the door body 13 is fully opened, the lock pin 25 protrudes outwards and does not necessarily abut against the door body 13.

A first baffle ring 251 is fixed to the lock pin 25, and the first baffle ring 251 is located between the inner end and the outer end of the lock pin 25.

A first anti-slip ring (not shown) is fixed to the inner end of the lock shaft link 221, and the first anti-slip ring and the first baffle 251 are respectively located at both sides of the first baffle 27, the first anti-slip ring is blocked by the first baffle, and the first anti-slip ring limits outward movement of the locked shaft link 221, thereby preventing the lock shaft pin 25 from being separated from the through hole of the first baffle 27.

The lock shaft pin 25 is sleeved with an elastic piece 26, the elastic piece 26 adopts a first pressure spring, the first pressure spring is located between the first baffle ring 251 and the first baffle plate 27, and two ends of the first pressure spring are respectively connected with the first baffle ring 251 and the first baffle plate 27. When the lock pin 25 is pressed by the door body 13 to move inward, the first baffle 251 moves in a direction approaching the first blocking plate 27, compressing the first compression spring, so that the lock pin 25 has a tendency to protrude outward. When the door body 13 is opened, the first compression spring is restored to be deformed, and the first blocking ring 251 moves outwardly together with the lock pin 25 under the action of the first compression spring.

The lock shaft link assembly 22 includes a lock shaft link 221 connected to an inner end of the lock shaft pin 25, a first crank arm 222 located inside the lock shaft link 221, a lock shaft link 223 located above the first crank arm 222, a swing arm 224 located above the lock shaft link 223, and a lock shaft boom 225 located below the swing arm 224.

The outer end of the lock shaft link 221 is fixedly connected to the inner end of the lock shaft pin 25.

The first crank arm 222 is rotatably connected to the mounting plate 14, and two ends of the first crank arm 222 are a first end and a second end respectively. The first end of the first lever 222 is rotatably connected to the inner end of the lock shaft link 221.

The mounting plate 14 is provided with a limiting plate 28, the limiting plate 28 comprises a first plate body and a second plate body, the first plate body is fixed on the mounting plate 14, the second plate body is perpendicular to the mounting plate 14, the second plate body is parallel to the width direction of the mounting plate 14, and a through hole is formed in the second plate body. The stop plate 28 may be an L-shaped angle iron.

The lock shaft connecting piece 223 is substantially parallel to the height direction of the mounting plate 14, and the lock shaft connecting piece 223 is located above the first crank arm 222.

The lock shaft connector 223 includes a first lock shaft body 2231, a second lock shaft body 2232 located above the first lock shaft body 2231, and a lock shaft plate body 2233 located between the first lock shaft body 2231 and the second lock shaft body 2232.

The bottom end of the first lock shaft rod 2231 is rotatably connected to the second end of the first crank arm 222. The first lock shaft rod 2231 penetrates through the through hole of the limiting plate 28. The length of the first lock shaft rod body 2231 is greater than that of the second lock shaft rod body 2232, and the transverse plate limiting plate 28 plays a limiting role to limit the swing amplitude of the first lock shaft rod body 2231.

The width of the first lock shaft body 2231 is substantially the same as the width of the second lock shaft body 2232, and the width of the first lock shaft body 2231 is smaller than the width of the lock shaft plate body 2233. The first lock shaft body 2231 is spaced apart from the second lock shaft body 2232.

The upper and lower ends of the lock shaft plate 2233 are fixedly connected to the first lock shaft 2231 and the second lock shaft 2232, respectively.

A tension spring 29 is mounted on the mounting plate 14. The extension spring 29 is located the below of swing arm 224, and the top of extension spring 29 hangs locates on the inner of swing arm 224, and the bottom of extension spring 29 is connected in mounting panel 14, and when door body 13 was opened, first turning arm 222 rotated, and lock axle connecting piece 223 upwards moved, and the inner of swing arm 224 upwards moves, and extension spring 29 stretches for the inner of swing arm 224 has the trend of downward movement, does benefit to door body 13 and closes the back sliding plate upwards and move.

The lock shaft plate 2233 is provided with a lock shaft guide hole 227, the lock shaft guide hole 227 is bar-shaped, and the length direction of the lock shaft guide hole 227 is approximately parallel to the length direction of the lock shaft connecting rod 221.

Specifically, four lock shaft guide holes 227 are adopted, wherein two lock shaft guide holes 227 are arranged at intervals up and down with the other two lock shaft guide holes 227, and the adjacent two lock shaft guide holes 227 are spaced.

A lock shaft guide 226 is provided on the mounting plate 14. The lock shaft guide 226 includes bolts and shims.

The screw of the bolt is fixed to the mounting plate 14 through the lock shaft guide hole 227 such that the lock shaft link 223 moves in the length direction of the lock shaft guide hole 227.

The gasket is sleeved on the screw rod of the bolt and is positioned between the head of the bolt and the lock shaft plate 2233. The outside diameter of the washer is greater than the width of the lock shaft guide hole 227 to prevent the lock shaft plate 2233 from escaping from the confines of the lock shaft guide 226. Of course, the lock shaft guide 226 may also employ flange bolts.

The top end of the second lock shaft rod 2232 is rotatably connected with the inner end of the swing arm 224. Wherein, the two ends of the swing arm 224 are respectively an outer end and an inner end, and the inner end of the swing arm 224 is far away from the door body 13 relative to the outer end of the swing arm 224.

The lock shaft hanger rod 225 is located at the outer side of the second lock shaft rod 2232, the top end of the lock shaft hanger rod 225 is connected with the outer end of the swing arm 224, and the bottom end of the lock shaft hanger rod 225 is connected with the top end of the slide plate 24.

The mounting base 23 is provided with a chute 231, and the length direction of the chute 231 is substantially parallel to the height direction of the mounting plate 14. The mounting seat 23 is also provided with a mounting hole 232, and the mounting hole 232 is communicated with the bottom of the chute 231. A guide block 233 is fixed to the mounting base 23, and specifically, the guide block 233 is located at the bottom of the chute 231. The stopper is fixed on the inner side of the mounting seat 23.

The slide plate 24 is generally perpendicular to the mounting plate 14. The sliding plate 24 is slidably inserted into the sliding slot 231. The sliding plate 24 is provided with a strip hole 242, the strip hole 242 is strip-shaped, and the length direction of the strip hole 242 is approximately parallel to the height direction of the mounting plate 14. The bar holes 242 are inserted by the guide blocks 233. The bar holes 242 are engaged with the guide blocks 233 so that the slide plate 24 is stably moved in the length direction of the bar holes 242.

The sliding plate 24 is provided with a locking hole 241, and the sliding plate 24 is overlapped with the mounting seat 23, so that the locking hole 241 is communicated with the mounting hole 232 on the mounting seat. The locking hole 241 and the mounting hole 232 are square holes. Of course, the locking hole 241 may take other shapes, such as a Chinese character 'zhong', i.e. the locking hole 241 comprises a square portion and two bar portions, which are respectively communicated with the upper portion and the lower portion of the square portion.

The lever 21 is a plate body, and the lever 21 is fixed to an edge portion of the end surface of the earth-boring cutter spindle 11, that is, the lever 21 is offset from the axis of the earth-boring cutter spindle 11, and is revolved around the axis of the earth-boring cutter spindle 11. The handle 21 protrudes from the outer side surface of the door frame 12.

It should be noted that, when the grounding switch is in the on state, the operation handle 21 rotates below the axis of the grounding switch main shaft 11, and the operation handle 21 is substantially parallel to the width direction of the mounting plate 14. When the grounding switch is in the open state, the lever 21 is substantially parallel to the width direction of the mounting plate 14 above the axis of the ground blade spindle 11. Of course, the rotation state of the operation lever 21 may be appropriately adjusted, and the operation lever may be engaged with the slide plate 24.

The operation lever 21 penetrates the mounting hole 232 and the locking hole 241, and the operation lever 21 can rotate in the mounting hole 232 and the locking hole 241.

Specifically, when the lock shaft pin 25 is outwardly protruded, the slide plate 24 is downwardly moved, the overlapping area of the locking hole 241 and the mounting hole 232 becomes small, and the upper side of the locking hole 241 blocks the operation handle to restrict the rotation of the operation handle. When the lock pin 25 is retracted inward, the slide plate 24 moves upward, and the overlapping area of the lock hole 241 and the mounting hole 232 becomes large to cancel the restriction of the operation lever 21, which can move.

If the locking hole 241 is shaped like a Chinese character 'zhong', the upper bar portion of the locking hole 241 is fitted over the operation lever 21 when the slide plate 24 moves downward, and the rotation of the operation lever 21 can be prevented.

It should be noted that, the installation seat 23 only plays a role in guiding and installing the sliding plate 24, so that the up-and-down movement of the sliding plate 24 is more stable, and if the installation seat 23 is not provided, the sliding plate 24 is suspended or depends on the door frame, and still plays a role in limiting the rotation of the operating handle.

The door locking unit 3 is mounted on the mounting plate 14, and the door locking unit 3 includes a cam 31 fixed on the ground blade spindle 11, a first door locking link 32 located below the cam 31, a door locking crank arm 38 located below the first door locking link 32, a second door locking link 39 located outside the door locking crank arm 38, a blocking pin 33 located outside the second door locking link 39, and a stopper 34 fixed on the inner side surface of the door body 13.

The cam 31 rotates with the rotation of the main shaft 11, and it is worth mentioning that when the grounding switch is in the switch-on state, the cam 31 swings down, and similarly, when the grounding switch is in the switch-off state, the cam 31 swings up.

The first door locking link 32 includes a rod body itself and a plate body fixed on the top end of the rod body itself, the plate body is substantially parallel to the ground blade spindle 11, and the plate body abuts against the cam 31, the plate body increases the contact area between the top end of the first door locking link 32 and the cam 31, so that the cam 31 acts on the top end of the first door locking link 32 more stably. Of course, the first door locking connecting rod 32 may have other shapes, and only needs to ensure that the top end of the first door locking connecting rod 32 is connected with the cam 31, and can move downwards under the driving of the cam 31.

The first door locking connecting rod 32 is provided with a door locking guide hole 321, the door locking guide hole 321 is in a bar shape, and the length direction of the door locking guide hole 321 is parallel to the height direction of the mounting plate 14.

A door locking guide 35 is fixed to the mounting plate 14, and the door locking guide 35 includes a bolt and a washer.

The shank of the bolt passes through the door locking guide hole 321 to be fixed to the mounting plate 14.

The gasket is sleeved on the shank of the bolt and is positioned between the head of the bolt and the first door locking link 32. The outside diameter of the spacer is greater than the width of the door locking guide hole 321 to prevent the first and third door locking bars from being separated from the restriction of the door locking guide 35. Of course, flange bolts may be used for the door locking guide 35. In other words, the specification of the lock door guide 35 is identical to the specification of the lock shaft guide 226.

The first door locking link 32 is movable in the length direction of the door locking guide hole 321 with the door locking guide 35 and the door locking guide hole 321 engaged.

The lock lever 38 has a first end and a second end. The first end of the door lock lever 38 is rotatably connected to the bottom end of the first door lock link 32.

The outer end of the second door locking link 39 is fixedly connected to the inner end of the blocking pin 33, and the inner end of the second door locking link 39 is rotatably connected to the second end of the door locking crank arm 38. The second door locking link 39 is substantially parallel to the width direction of the mounting plate 14.

The mounting plate 14 is fixed with a second baffle 36, and the second baffle 36 includes a second connecting plate and a second vertical plate perpendicular to the second connecting plate, and the second connecting plate is fixed on the mounting plate 14. The second vertical plate is perpendicular to the mounting plate 14, through holes are formed in the second vertical plate, and the second first vertical plate is perpendicular to the mounting plate 14 and perpendicular to the blocking pins. The second baffle 36 may be an L-shaped angle iron.

It will be appreciated that the second baffle 36 may also be a vertical plate welded perpendicularly to the mounting plate 14.

The length direction of the blocking pin 33 is substantially parallel to the width direction of the mounting plate 14, and the blocking pin 33 can move in the width direction of the mounting plate 14, so that the blocking pin 33 can be close to or away from the stopper 34 on the inner side surface of the door body 13 when the door body 13 is closed. The blocking pin 33 penetrates through the through hole of the second barrier.

A second baffle ring 331 is fixed to the baffle pin 33, and the second baffle ring 331 is located between the inner end and the outer end of the baffle pin 33.

The blocking pin 33 is fixed with a second anti-slip ring (not shown), and the second anti-slip ring and the second blocking ring 331 are respectively located at both sides of the second blocking plate 36, and the second anti-slip ring is blocked by the second blocking plate, so that the blocking pin 33 is restricted from moving outwards, and the blocking pin 33 is prevented from being separated from the through hole of the second blocking plate 36.

The blocking pin 33 is sleeved with a second pressure spring 37, the second pressure spring 37 is located between the second blocking ring 331 and the second baffle 36, one end of the second pressure spring 37 is connected to the second baffle 36, and the other end of the second pressure spring 37 is connected to the second blocking ring 331.

When the grounding switch is switched to be switched on, the cam 31 swings downwards, the first door locking connecting rod 32 is extruded to move downwards, the door locking crank arm 38 rotates, and when the blocking pin 33 moves inwards, the second blocking ring 331 moves towards the direction close to the second blocking plate so as to compress the second pressure spring 37, so that the blocking pin 33 has a trend of extending outwards. When the grounding switch is switched to switch off, the cam 31 swings upwards, a space exists between the cam 31 and the first door locking connecting rod 32, the second pressure spring 37 is restored to deform, the blocking pin 33 and the second door locking connecting rod 39 move outwards, the door locking crank arm 38 rotates, the first door locking connecting rod 32 moves upwards along with the locking crank arm, and the first door locking connecting rod 32 is kept in contact with the cam 31. The second compression spring 37 makes the first door locking link 32 always have a tendency to approach the cam 31, and thus makes the first door locking link 32 move up and down as the cam 31 rotates.

The limiting piece 34 is plate-shaped, the limiting piece 34 is fixed on the inner side surface of the door body 13, and the limiting piece 34 is perpendicular to the inner side surface of the door body 13. The stopper 34 moves with the door 13 and can move above and below the stopper pin 33. Of course, the stopper 34 may be a block-shaped structure.

Referring to fig. 1 to 9, the working principle of the embodiment of the present application is as follows: in the initial state, the grounding switch is in a switching-off state, the door body 13 is closed, the operating handle 21 is positioned above the axis of the grounding knife main shaft 11, the middle part of the locking hole 241 of the sliding plate 24 is aligned with the axis of the grounding knife main shaft 11, the overlapping area of the locking hole 241 and the mounting hole 232 is maximum, and the rotation of the operating handle 21 is not influenced; the cam 31 swings upwards, the first door locking connecting rod 32 is located at an upper limit position, the blocking pin 33 is in an extending state and located above the limiting piece 34 to block the limiting piece 34, so that the door body 13 cannot move upwards, namely the clamping piece cannot move to the movable position of the clamping part, the door body 13 cannot rotate, the door body 13 is effectively prevented from being opened when the grounding switch is opened, and the safety of workers is guaranteed.

The grounding switch is switched to a closing state, the operating handle 21 rotates downwards to the lower part of the axis of the grounding knife main shaft 11, meanwhile, the cam 31 swings downwards to squeeze the first door locking connecting rod 32, so that the first door locking connecting rod 32 moves to a lower limit position, the door locking crank arm 38 rotates, the second door locking connecting rod 39 and the blocking pin 33 move inwards, the blocking pin 33 is far away from the limiting piece 34 to cancel the limitation of the limiting piece 34, the second pressure spring 37 compresses, and at the moment, a worker can lift the door body 13 upwards to enable the clamping piece to be at the movable position of the clamping part, and then the door body 13 is opened.

When the door body 13 is opened, the elastic piece 26 releases the elastic force, so that the lock shaft pin 25 extends outwards, the first crank arm 222 rotates anticlockwise, the lock shaft connecting rod 221 moves to the upper limit position, the swing arm 224 rotates, the tension spring 29 is stretched, the lock shaft suspender 225 and the sliding plate 24 are linked, the sliding plate 24 moves downwards along the sliding groove 231, the sliding plate 24 and the mounting seat 23 are clamped on the operating handle 21 together, the operating handle 21 is blocked from moving upwards, the ground knife main shaft 11 is prevented from rotating, and finally, when the door body 13 is prevented from being opened, the ground switch is opened, so that the safety of workers is effectively ensured.

After the cable room is overhauled by a worker, the door body 13 can be closed, the lock shaft interlocking unit 2 and the door body 13 recover to an initial state, the limiting piece 34 is positioned below the blocking pin 33, the grounding switch is controlled to be separated, the cam 31 swings upwards, the first door locking connecting rod 32 moves to an upper limit position, and the second pressure spring 37 releases pressure, so that the blocking pin 33 is recovered to an extending state, and the door body 13 is limited to be opened.

In other embodiments, not shown, the swing arm is replaced with a fixed rod, the lock shaft hanging rod is omitted, two ends of the fixed rod are respectively an inner end and an outer end, the inner end of the fixed rod is far away from the door frame relative to the outer end of the fixed rod, the inner end of the fixed rod is fixedly connected with the lock shaft connecting piece, and the outer end of the fixed rod is fixedly connected with the sliding plate. An inclined angle is arranged between the fixed rod and the lock shaft connecting piece. Thus, the first crank arm 222 rotates under the driving of the lock shaft pin, the lock shaft connecting piece is lifted, the sliding plate, the fixing rod and the lock shaft connecting piece are lifted synchronously, and the restriction or the cancellation of the restriction of the sliding plate on the operation handle is realized.

In other embodiments, which are not shown, when the grounding switch is closed, the operating handle rotates below the axis of the grounding knife main shaft, the door body is opened at this time, the lock shaft pin extends outwards, the lock shaft connecting rod assembly acts, the sliding plate moves to the lower limit position, the upper side edge of the locking hole presses on the operating handle, so that the operating handle cannot rotate, and locking and unlocking of the operating handle can be achieved without a mounting seat.

In other embodiments, not shown, the handle may also have other structures, such as a cube, where the handle is fixed at the axis or the edge of the end surface of the main shaft of the ground knife, and the shape of the locking hole on the sliding plate matches with the shape of the cross section of the handle, so that the sliding plate is in snap fit with the handle. When the door body is opened, the upper side edge of the locking hole is pressed on the operating handle, the sliding plate is clamped with the operating handle in a clamping way, and when the door body is closed, the upper side edge of the locking hole leaves the operating handle, and at the moment, the operating handle is allowed to rotate.

In other embodiments, not shown, the first blocking ring may be fixed between the inner end of the lock shaft pin and the first baffle, and at this time, the elastic member adopts a tension spring, and two ends of the tension spring are respectively connected to the first blocking ring and the first baffle, so that the lock shaft pin still naturally extends outwards after the door body is opened. Similarly, the second baffle ring can be fixed between the inner end of the baffle pin and the second baffle plate, and the second pressure spring is replaced by a tension spring.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.

Claims

1. The switch cabinet is characterized by comprising a cabinet body, a lock shaft interlocking unit and a rotatable ground knife main shaft, wherein the lock shaft interlocking unit is arranged in the cabinet body; the lock shaft interlocking unit includes:

the operating handle is fixed at the outer end part of the ground knife main shaft;

The first baffle is arranged on the mounting plate;

The lock shaft pin penetrates through the first baffle plate, the lock shaft pin can move along the width direction of the mounting plate, the outer end of the lock shaft pin can be abutted against the inner side surface of the door body, and a first baffle ring is arranged on the lock shaft pin;

the elastic piece is sleeved on the lock shaft pin and positioned between the first baffle ring and the first baffle plate, and the elastic piece is blocked by the first baffle plate;

the lock shaft connecting rod assembly is arranged on the mounting plate, and the bottom end of the lock shaft connecting rod assembly is connected with the inner end of the lock shaft pin so as to move up and down along with the movement of the lock shaft pin;

the sliding plate is connected to the top end of the lock shaft connecting rod assembly and can move up and down along with the lock shaft connecting rod assembly, a locking hole is formed in the sliding plate, the operating handle penetrates through the locking hole, the movement of the operating handle can be limited by the downward movement of the sliding plate so as to prevent the rotation of the ground knife main shaft, and the limitation of the operating handle can be canceled by the upward movement of the sliding plate;

the lock shaft connecting rod assembly includes:

The first crank arm is rotatably arranged on the mounting plate, one end of the first crank arm is connected to the inner end of the lock shaft pin, and the first crank arm rotates along with the movement of the lock shaft pin;

the bottom end of the lock shaft connecting piece is connected to the other end of the first crank arm, and the lock shaft connecting piece ascends and descends along with the rotation of the first crank arm;

The swing arm is rotatably arranged on the mounting plate, two ends of the swing arm are respectively an inner end and an outer end, the inner end of the swing arm is far away from the door frame relative to the outer end of the swing arm, the inner end of the swing arm is connected with the top end of the lock shaft connecting rod, the outer end of the swing arm is connected with the sliding plate, and the swing arm swings along with the lifting of the lock shaft connecting piece;

The lock shaft connector includes:

The first lock shaft body is connected with the first crank arm;

The second lock shaft body is connected with the swing arm;

The upper end and the lower end of the lock shaft plate body are respectively connected with the first lock shaft body and the second lock shaft body, a lock shaft guide hole is formed in the lock shaft plate body, the lock shaft guide hole is in a strip shape, and the length direction of the lock shaft guide hole is parallel to the height direction of the mounting plate;

The lock shaft guide piece penetrates through the lock shaft guide hole and is fixed on the mounting plate;

the mounting plate is provided with a tension spring, the tension spring is positioned below the swing arm, the top end of the tension spring is connected to the inner end of the swing arm, and the bottom end of the tension spring is connected to the mounting plate.

2. The switch cabinet of claim 1, wherein the lock shaft interlocking unit further comprises a mounting seat fixed on the door frame, a sliding groove is formed in the mounting seat, and the sliding plate is inserted into the sliding groove and is in sliding connection with the mounting seat.

3. The switch cabinet according to claim 2, wherein the mounting seat is provided with a mounting hole, the mounting hole is communicated with the bottom of the chute, and the mounting hole is communicated with the locking hole;

The operating handle is positioned in the mounting hole and can move in the mounting hole.

4. A switch cabinet according to claim 3, wherein the sliding plate is provided with a strip hole, and the length direction of the strip hole is approximately parallel to the length direction of the sliding groove;

the mounting seat is fixedly provided with a guide block, and the guide block is positioned in the strip hole.

5. A switch cabinet according to claim 3, wherein the locking hole and the mounting hole are rectangular, and the lower side of the mounting hole and the lower side of the locking hole are both substantially perpendicular to the height direction of the mounting plate.

6. The switch cabinet according to claim 1, wherein the operation handle is fixed to an edge portion of an end face of the earth-boring cutter main shaft;

when the ground knife main shaft is switched on, the operating handle is positioned below the axis of the ground knife main shaft; when the ground knife main shaft is switched off, the operating handle is positioned above the axis of the ground knife main shaft.

7. The switch cabinet according to claim 1, wherein the operation handle is fixed to an end surface of an outer end of the earth-boring cutter main shaft, and the operation handle is engaged with an upper portion of the locking hole.

8. The switch cabinet according to claim 1, wherein a clamping part is arranged on the door frame, a clamping piece is fixed on the inner side surface of the door body, the clamping piece is matched with the lower part of the clamping part in a clamping way, and the clamping piece can be separated from the upper part of the clamping part;

The door body is in sliding connection with the door frame, so that the door body can be lifted relative to the cabinet body, and when the door body is closed, the clamping piece moves to the upper part or the lower part of the clamping part along with the lifting of the door body;

The switch cabinet further comprises a door locking interlocking unit arranged on the mounting plate, wherein the door locking interlocking unit comprises a limiting piece fixed on the inner side surface of the door body, a cam fixed on the ground knife main shaft, a door locking connecting rod abutted with the cam, a second crank arm rotatably arranged on the mounting plate, a second baffle plate arranged on the mounting plate, a blocking pin approximately parallel to the width direction of the mounting plate, a second blocking ring fixed on the blocking pin and a pressure spring sleeved on the blocking pin;

The second baffle is approximately parallel to the height direction of the mounting plate, the blocking pin penetrates through the second baffle, the blocking pin can move along the width direction of the mounting plate, the door locking connecting rod is located below the cam, one end of the second crank arm is connected with the door locking connecting rod, the other end of the second crank arm is connected with the inner end of the blocking pin, the second blocking ring is located between the second baffle and the outer end of the blocking pin, two ends of the pressure spring are respectively connected with the second blocking ring and the second baffle, the second baffle blocks the pressure spring, and the blocking pin can move outwards or inwards to block the limiting piece from moving upwards or cancel blocking.

9. The switch cabinet according to claim 8, wherein the door locking connecting rod is provided with a door locking guide hole, the door locking guide hole is in a strip shape, and the length direction of the door locking guide hole is approximately parallel to the height direction of the mounting plate;

The mounting plate is fixedly provided with a door locking guide piece, and the door locking guide piece is positioned in the door locking guide hole.

10. The switch cabinet is characterized by comprising a cabinet body, a lock shaft interlocking unit and a rotatable ground knife main shaft, wherein the lock shaft interlocking unit is arranged in the cabinet body; the lock shaft interlocking unit includes:

The first baffle is arranged on the mounting plate;

the lock shaft connecting rod assembly includes:

the inner end of the fixed rod is far away from the door frame relative to the outer end of the fixed rod, the inner end of the fixed rod is fixedly connected with the lock shaft connecting piece, the outer end of the fixed rod is fixedly connected with the sliding plate, and the fixed rod and the lock shaft connecting piece form an inclined angle;

The lock shaft connector includes:

The first lock shaft body is connected with the first crank arm;

the second lock shaft body is connected with the fixed rod;

and the lock shaft guide piece penetrates through the lock shaft guide hole and is fixed on the mounting plate.