阅读说明：本技术 一种6kV高压开关柜机械防误锁闭装置 (Mechanical anti-misoperation locking device of 6kV high-voltage switch cabinet ) 是由 李慧敏 陈鹏飞 崔斌 马艳丽 段媛媛 齐子丹 张超伟 董明 张萍 王斌 邢强 于 2020-07-23 设计创作，主要内容包括：本发明公开了一种6kV高压开关柜机械防误锁闭装置,涉及高压开关控制技术领域,解决了目前使用的防误锁闭装置主要通过机械锁进行控制,操作繁琐,在工作人员打开旋转门的时候,不便由旋转门的内侧位置对旋转门进行控制的问题。一种6kV高压开关柜机械防误锁闭装置,包括柜体；所述柜体的前侧通过绞连接旋转设置有旋转门；所述旋转门的内侧中间固定设置有中间架；所述柜体的内侧中间偏下处旋转设置有控制轴,通过设置有控制齿条,可以对旋转门进行固定,利用手轮可以从外部控制旋转门,利用旋钮可以从内部控制旋转门,控制方便,通过控制轴带动主控齿轮旋转后啮合控制齿条向一侧移动,可以利用控制齿条将旋转门和柜体的前侧内壁对齐并配合插块固定。(The invention discloses a mechanical anti-misoperation locking device of a 6kV high-voltage switch cabinet, relates to the technical field of high-voltage switch control, and solves the problems that the currently used anti-misoperation locking device is mainly controlled by a mechanical lock, the operation is complicated, and when a worker opens a revolving door, the revolving door is inconvenient to control by the inner side position of the revolving door. A mechanical anti-misoperation locking device of a 6kV high-voltage switch cabinet comprises a cabinet body; the front side of the cabinet body is rotatably provided with a rotating door through a hinge; a middle frame is fixedly arranged in the middle of the inner side of the revolving door; the rotary door is characterized in that a control shaft is rotatably arranged in the middle of the inner side of the cabinet body, the rotary door can be fixed by arranging a control rack, the rotary door can be controlled from the outside by utilizing a hand wheel, the rotary door can be controlled from the inside by utilizing a knob, the control is convenient, the main control gear is driven by the control shaft to rotate and then is engaged with the control rack to move to one side, and the control rack can be utilized to align the rotary door and the inner wall of the front side of the cabinet body and is matched with an insert block for fixing.)

1. The utility model provides a 6kV high tension switchgear machinery prevents mistake locking device which characterized in that: comprises a cabinet body (1); the front side of the cabinet body (1) is rotatably provided with a rotating door (2) through hinge connection; a middle frame (3) is fixedly arranged in the middle of the inner side of the rotating door (2); a control rack (4) is arranged in the middle frame (3) in a sliding manner; a control shaft (5) is rotatably arranged at the lower middle part of the inner side of the cabinet body (1); two groups of rack frames (6) are fixedly arranged at the bottoms of two ends of the inner side of the cabinet body (1), a transmission rack A (7) and a transmission rack B (8) are respectively arranged in the two groups of rack frames (6) in a transverse sliding manner, the rear ends of the sides of the transmission rack A (7) and the transmission rack B (8) are both subjected to fillet treatment, and a metal sheet A (801) is fixedly arranged at the inner end of the transmission rack B (8); an inserting cylinder (13) is fixedly arranged on the inner side of the rotating door (2).

2. The mechanical anti-misoperation locking device for the 6kV high-voltage switch cabinet, according to claim 1, is characterized in that: the revolving door (2) also comprises a strip-shaped hole (201) and a guide block (202); a strip-shaped hole (201) is vertically formed in the middle of the revolving door (2), and the strip-shaped hole (201) penetrates through the front side and the rear side of the revolving door (2); a guide block (202) is integrally arranged at the lower middle part of the inner side of the rotating door (2), and the guide block (202) is positioned at the bottom of the control shaft (5); a metal sheet B (11) is arranged on one side of the guide block (202) in a sliding mode, a guide rod is arranged on one side of the metal sheet B (11) in a penetrating mode, and the guide rod is sleeved with a spring and arranged in the guide block (202) in a sliding mode; the inner side of the revolving door (2) is integrally provided with a convex block, and a reset rod (16) is arranged in the convex block in a sliding manner.

3. The mechanical anti-misoperation locking device for the 6kV high-voltage switch cabinet, according to claim 1, is characterized in that: a wedge-shaped groove structure is formed in the middle of the top of the middle frame (3); the bottom of the middle frame (3) is provided with an opening structure; three groups of wedge-shaped grooves are formed in the middle of the top of the control rack (4) at equal intervals, and the middle frame (3) can be aligned with the wedge-shaped grooves of the control rack (4); and a handle structure is integrally arranged at one end of the inner side of the control rack (4).

4. The mechanical anti-misoperation locking device for the 6kV high-voltage switch cabinet, according to claim 1, is characterized in that: the control rack (4) also comprises a contact rod (401); two groups of contact rods (401) are fixedly arranged on two sides of the top of the control rack (4), and metal balls are fixedly arranged in the middle of the tops of the contact rods (401); two groups of proximity switches (14) are fixedly arranged at two ends of the inner side of the revolving door (2); the inner side top of the revolving door (2) is fixedly provided with two sets of LED lamps (15), the LED lamps (15) are respectively communicated with the proximity switches (14) on the same side in a line connection mode, and when the wedge-shaped grooves on the two sides of the top of the control rack (4) are respectively aligned with the middle wedge-shaped groove on the top of the middle frame (3), the two sets of contact rods (401) can respectively trigger the two sets of proximity switches (14).

5. The mechanical anti-misoperation locking device for the 6kV high-voltage switch cabinet, according to claim 1, is characterized in that: the control shaft (5) also comprises a main control gear (501), a knob (502) and a hand wheel (503); the outer part of the inner side of the control shaft (5) is fixedly provided with a main control gear (501) through key connection, and the top of the main control gear (501) penetrates through the bottom opening of the middle frame (3) to be meshed with the top of the control rack (4); the outer side of the inner end of the main control gear (501) is fixedly provided with a knob (502) through a bolt; the outer end of the control shaft (5) is fixedly provided with a hand wheel (503) through a bolt.

6. The mechanical anti-misoperation locking device for the 6kV high-voltage switch cabinet, according to claim 1, is characterized in that: two ends of the inner side of the revolving door (2) are rotatably provided with a driven gear A (9) and a driven gear B (10) through a rotating shaft; the tops of the driven gear A (9) and the driven gear B (10) are meshed with the two sides of the bottom of the control rack (4); the bottom of the driven gear A (9) is meshed with the top of the transmission rack A (7); the bottom of the driven gear B (10) is meshed with the top of the transmission rack B (8); the wedge-shaped groove at one side of the top of the control rack (4), which is close to the outer edge of the rotating door (2), is aligned with the wedge-shaped groove at the top of the middle frame (3), and the control rack (4) exceeds the connecting edge of the rotating door (2) and the cabinet body (1); the wedge-shaped groove at the top of the control rack (4) close to the connecting edge of the revolving door (2) and the cabinet body (1) is aligned with the wedge-shaped groove at the top of the middle frame (3), and meanwhile, the bottoms of the metal sheets A (801) contacting the metal sheets B (11) and the metal sheets A (801) are all provided with a circuit which penetrates through the wiring terminal (12) to be connected.

7. The mechanical anti-misoperation locking device for the 6kV high-voltage switch cabinet, according to claim 1, is characterized in that: the insert cylinder (13) further comprises a square pin (1301), a side groove (1302) and a handle (1303); a square pin (1301) is arranged on the inner side of the insertion cylinder (13) in a sliding mode; a side groove (1302) is formed in the middle of the bottom of the front side of the square pin (1301); the bottom of the side groove (1302) is rotatably provided with a handle (1303) through a hinge connection; a guide groove is formed in the middle of the front side of the inserting cylinder (13), and the handle (1303) can slide in the guide groove; the bottom of the inner side of the square pin (1301) is arranged to be of a cambered surface structure, and the bottom surface of the square pin (1301) can be aligned with the top end of the reset rod (16).

8. The mechanical anti-misoperation locking device for the 6kV high-voltage switch cabinet according to claim 7, characterized in that: the reset rod (16) further comprises an insert block (1601); an insert block (1601) is integrally arranged at the bottom of the reset rod (16); a spring is sleeved on the outer side of the reset rod (16), and the inserting block (1601) can be inserted into wedge-shaped grooves in the tops of the middle frame (3) and the control rack (4) in a matched mode to fix the positions of the middle frame (3) and the control rack (4); the two ends of the insertion block (1601) are provided with round bar structures in a uniform mode, and the round bars on the outer side of the insertion block (1601) are arranged in the strip-shaped holes (201) in a sliding mode.

Technical Field

The invention relates to the technical field of high-voltage switch control, in particular to a mechanical anti-misoperation locking device of a 6kV high-voltage switch cabinet.

Background

The high-voltage switch cabinet is a control cabinet which is formed by assembling switch equipment, measuring instruments, protective electrical appliances and auxiliary equipment in a closed or semi-closed metal cabinet or on a screen according to the electrical wiring requirements, wherein the arrangement of the control cabinet meets the requirements of normal operation of an electric power system, is convenient to overhaul, does not endanger the safety of people and surrounding equipment, and generally comprises a surrounding shell and a revolving door to form an overall appearance.

Through retrieving for example patent No. CN208820251U discloses a 6kV high tension switchgear machinery prevents mistake locking device, including the cabinet body, the cabinet body openly is equipped with operating mechanism, the cabinet body back is equipped with cable compartment door plant, its characterized in that: the cable bin is characterized in that a mechanical lock is installed on the switch mechanism, an insulation test window is installed on the cable bin door plate, a mechanical lock is installed on one side of the insulation test window, and the mechanical lock are equipped with only one mechanical lock key. This practicality has following advantage: the operation flow of operators can be reduced, accidents that operators and maintainers mistakenly enter the electrified interval are reduced, and the safety and stability of equipment operation are improved.

However, the currently used mechanical anti-misoperation locking device is mainly controlled through a mechanical lock, the operation is complex, when workers open the revolving door, the revolving door is inconveniently controlled by the inner side position of the revolving door, the workers who pass the revolving door cannot be reminded to mistakenly close the revolving door, and therefore the existing requirements are not met, and the mechanical anti-misoperation locking device for the 6kV high-voltage switch cabinet is provided.

Disclosure of Invention

Problem (A)

The invention aims to provide a mechanical anti-misoperation locking device for a 6kV high-voltage switch cabinet, which aims to solve the problems that the existing anti-misoperation locking device proposed in the background technology is mainly controlled by a mechanical lock, the operation is complicated, when a worker opens a revolving door, the revolving door is inconvenient to control by the inner side position of the revolving door, and the problem that the worker who passes by cannot be reminded to prevent the revolving door from being closed by mistake is solved.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: a mechanical anti-misoperation locking device of a 6kV high-voltage switch cabinet comprises a cabinet body; the front side of the cabinet body is rotatably provided with a rotating door through a hinge; a middle frame is fixedly arranged in the middle of the inner side of the revolving door; a control rack is arranged in the middle frame in a sliding manner; a control shaft is rotatably arranged at the lower middle part of the inner side of the cabinet body; two groups of rack racks are fixedly arranged at the bottoms of two ends of the inner side of the cabinet body, a transmission rack A and a transmission rack B are respectively arranged in the two groups of rack in a transverse sliding manner, the rear ends of the side sides of the transmission rack A and the transmission rack B are both subjected to fillet treatment, and a metal sheet A is fixedly arranged at the inner end of the transmission rack B; an inserting cylinder is fixedly arranged on the inner side of the rotating door.

Preferably, the revolving door further comprises a strip-shaped hole and a guide block; a strip-shaped hole is vertically formed in the middle of the revolving door and penetrates through the front side and the rear side of the revolving door; a guide block is integrally arranged at the lower middle part of the inner side of the revolving door and is positioned at the bottom of the control shaft; a metal sheet B is arranged on one side of the guide block in a sliding mode, a guide rod is arranged on one side of the metal sheet B in a penetrating mode, and the guide rod is sleeved with a spring and is arranged in the guide block in a sliding mode; the inboard integral type of revolving door is provided with the lug, and slides in the lug and is provided with the release link.

Preferably, a wedge-shaped groove structure is formed in the middle of the top of the middle frame; the bottom of the middle frame is provided with an opening structure; three groups of wedge-shaped grooves are formed in the middle of the top of the control rack at equal intervals, and the middle frame can be aligned with the wedge-shaped grooves of the control rack; and a handle structure is integrally arranged at one end of the inner side of the control rack.

Preferably, the control rack further comprises a contact rod; two groups of contact rods are fixedly arranged on two sides of the top of the control rack, and metal balls are fixedly arranged in the middle of the tops of the contact rods; two groups of proximity switches are fixedly arranged at two ends of the inner side of the revolving door; the top of the inner side of the revolving door is fixedly provided with two groups of LED lamps, the LED lamps are respectively communicated with the proximity switches on the same side in a line connection mode, the wedge-shaped grooves on two sides of the top of the control rack are respectively aligned with the wedge-shaped groove in the middle of the top of the middle frame, and the two groups of contact rods can respectively trigger the two groups of proximity switches.

Preferably, the control shaft further comprises a main control gear, a knob and a hand wheel; the outside of the inner side of the control shaft is fixedly provided with a main control gear through key connection, and the top of the main control gear penetrates through the bottom opening of the middle frame to be meshed with the top of the control rack; a knob is fixedly arranged on the outer side of the inner end of the main control gear through a bolt; and a hand wheel is fixedly arranged at the outer end of the control shaft through a bolt.

Preferably, the two ends of the inner side of the revolving door are rotatably provided with a driven gear A and a driven gear B through a rotating shaft; the tops of the driven gear A and the driven gear B are meshed with the two sides of the bottom of the control rack; the bottom of the driven gear A is meshed with the top of the transmission rack A; the bottom of the driven gear B is meshed with the top of the transmission rack B; the wedge-shaped groove at one side of the top of the control rack close to the outer edge of the rotating door is aligned with the wedge-shaped groove at the top of the middle frame, and the control rack exceeds the connecting edge of the rotating door and the cabinet body; the wedge-shaped groove at the top of the control rack close to the connecting edge of the revolving door and the cabinet body is aligned with the wedge-shaped groove at the top of the middle frame, and meanwhile, the bottom of the metal sheet A contacting the metal sheet B and the bottom of the metal sheet A are both provided with a circuit which penetrates through the wiring terminal to be connected.

Preferably, the insert cylinder further comprises a square pin, a side groove and a handle; a square pin is arranged on the inner side of the inserting cylinder in a sliding manner; a side groove is formed in the middle of the bottom of the front side of the square pin; the bottom of the side groove is rotatably provided with a handle through a hinge; a guide groove is formed in the middle of the front side of the insertion cylinder, and the handle can slide in the guide groove; the bottom of the inner side of the square pin is of a cambered surface structure, and the bottom surface of the square pin can be aligned with the top end of the reset rod.

Preferably, the reset lever further comprises an insert block; the bottom of the reset rod is integrally provided with an inserting block; a spring is sleeved on the outer side of the reset rod, and the inserting block can be inserted into the wedge-shaped grooves in the tops of the middle frame and the control rack in a matched manner with the spring to fix the positions of the middle frame and the control rack; the both ends homogeneous body formula of inserted block is provided with the round bar structure, and the outside round bar of inserted block slides and sets up in the bar hole.

(III) advantageous effects

The invention provides a mechanical anti-misoperation locking device of a 6kV high-voltage switch cabinet, which can fix a revolving door by arranging a control rack, can control the revolving door from the outside by using a hand wheel, can control the revolving door from the inside by using a knob, is convenient to control, can drive a main control gear to rotate by a control shaft and then is meshed with the control rack to move towards one side, can align the inner walls of the front sides of the revolving door and a cabinet body by using the control rack and is matched with an insert block to fix the revolving door, so that the position of the revolving door is fixed, convenience is provided for maintenance, a square pin is arranged on the inner side of the revolving door, a reset rod can be blocked by the square pin to prevent the insert block from being separated from a wedge-shaped groove of.

Secondly, contact lever and proximity switch's setting provides the warning function for preventing mistake locking device, can trigger the LED lamp in contact lever and proximity switch so that the staff observes the position and the control state of control rack by the outside of revolving door, has increased the security performance of cubical switchboard.

Furthermore, sheetmetal A and sheetmetal B's setting provides the accuse electricity function for preventing mistake locking device, and when the revolving door was opened, the control rack can drive driven gear B and outwards promote transmission rack B, parts sheetmetal A and sheetmetal B, guarantees the part outage of cabinet body inside, has increased the security of preventing mistake locking device.

Drawings

FIG. 1 is a schematic perspective view of an embodiment of the present invention;

FIG. 2 is a schematic axial side view of an embodiment of the present invention;

FIG. 3 is a schematic perspective rear view structure in an embodiment of the present invention;

FIG. 4 is a schematic perspective side view of an embodiment of the present invention;

FIG. 5 is a schematic bottom view of an embodiment of the present invention;

FIG. 6 is a schematic diagram of a square pin configuration in an embodiment of the invention;

FIG. 7 is an enlarged partial structural view of part A in the embodiment of the present invention;

FIG. 8 is an enlarged partial structural view of a portion B in the embodiment of the present invention;

in fig. 1 to 8, the correspondence between the part names or lines and the reference numbers is:

1. a cabinet body; 2. a revolving door; 201. a strip-shaped hole; 202. a guide block; 3. a middle frame; 4. a control rack; 401. a contact lever; 5. a control shaft; 501. a master control gear; 502. a knob; 503. a hand wheel; 6. a rack frame; 7. a transmission rack A; 8. a transmission rack B; 801. a metal sheet A; 9. a driven gear A; 10. a driven gear B; 11. a metal sheet B; 1101. a guide bar; 12. a wiring terminal; 13. inserting a cylinder; 1301. a square pin; 1302. a side groove; 1303. a handle; 14. a proximity switch; 15. an LED lamp; 16. a reset lever; 1601. and (5) inserting the blocks.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

The proximity switch 14 referred to in the present invention (model lj24a3-10-z/bx) may be obtained by private customization or by market purchase.

Referring to fig. 1 to 8, an embodiment of the present invention includes: a mechanical anti-misoperation locking device of a 6kV high-voltage switch cabinet comprises a cabinet body 1; the front side of the cabinet body 1 is rotatably provided with a revolving door 2 through a hinge connection; wherein, the revolving door 2 also comprises a strip-shaped hole 201 and a guide block 202; a strip-shaped hole 201 is vertically formed in the middle of the revolving door 2, and the strip-shaped hole 201 penetrates through the front side and the rear side of the revolving door 2; a guide block 202 is integrally arranged at the lower middle part of the inner side of the revolving door 2, and the guide block 202 is positioned at the bottom of the control shaft 5; a metal sheet B11 is slidably arranged on one side of the guide block 202, a guide rod is arranged on one side of the metal sheet B11, and the guide rod is sleeved with a spring and slidably arranged in the guide block 202; a lug is integrally arranged on the inner side of the revolving door 2, and a reset rod 16 is arranged in the lug in a sliding manner; a middle frame 3 is fixedly arranged in the middle of the inner side of the revolving door 2; wherein, the middle of the top of the middle frame 3 is provided with a wedge-shaped groove structure; the bottom of the middle frame 3 is provided with an opening structure; three groups of wedge-shaped grooves are formed in the middle of the top of the control rack 4 at equal intervals, and the middle frame 3 can be aligned with the wedge-shaped grooves of the control rack 4; a handle structure is integrally arranged at one end of the inner side of the control rack 4; a control rack 4 is arranged in the middle frame 3 in a sliding manner; wherein, the control rack 4 also comprises a contact rod 401; two groups of contact rods 401 are fixedly arranged on two sides of the top of the control rack 4, and metal balls are fixedly arranged in the middle of the tops of the contact rods 401; two groups of proximity switches 14 are fixedly arranged at two ends of the inner side of the revolving door 2; two groups of LED lamps 15 are fixedly arranged at the top of the inner side of the revolving door 2, the LED lamps 15 are respectively communicated with the proximity switches 14 on the same side in a circuit connection mode, and when the wedge-shaped grooves on the two sides of the top of the control rack 4 are respectively aligned with the middle wedge-shaped groove in the top of the middle frame 3, the two groups of contact rods 401 can respectively trigger the two groups of proximity switches 14; a control shaft 5 is rotatably arranged at the lower middle part of the inner side of the cabinet body 1; the control shaft 5 further comprises a main control gear 501, a knob 502 and a hand wheel 503; the outside of the inner side of the control shaft 5 is fixedly provided with a main control gear 501 through key connection, and the top of the main control gear 501 penetrates through the bottom opening of the middle frame 3 to be meshed with the top of the control rack 4; a knob 502 is fixedly arranged on the outer side of the inner end of the main control gear 501 through a bolt; the outer end of the control shaft 5 is fixedly provided with a hand wheel 503 through a bolt; two groups of rack frames 6 are fixedly arranged at the bottoms of two ends of the inner side of the cabinet body 1, a transmission rack A7 and a transmission rack B8 are respectively arranged in the two groups of rack frames 6 in a transverse sliding manner, the rear ends of the sides of the transmission rack A7 and the transmission rack B8 are both subjected to fillet treatment, and a metal sheet A801 is fixedly arranged at the inner end of the transmission rack B8; wherein, the two ends of the inner side of the revolving door 2 are rotatably provided with a driven gear A9 and a driven gear B10 through a rotating shaft; the tops of the driven gear A9 and the driven gear B10 are meshed with the two sides of the bottom of the control rack 4; the bottom of the driven gear A9 is meshed with the top of the transmission rack A7; the bottom of the driven gear B10 is meshed with the top of the transmission rack B8; a wedge-shaped groove at one side of the top of the control rack 4, which is close to the outer edge of the rotating door 2, is aligned with a wedge-shaped groove at the top of the middle frame 3, and the control rack 4 exceeds the connecting edge of the rotating door 2 and the cabinet body 1; the wedge-shaped groove at the top of the control rack 4 close to the connecting edge of the revolving door 2 and the cabinet body 1 is aligned with the wedge-shaped groove at the top of the middle frame 3, and the bottoms of the metal sheet A801, which are in contact with the metal sheet B11, and the metal sheet A801 are provided with lines which penetrate through the wiring terminal 12 for connection; an insertion cylinder 13 is fixedly arranged on the inner side of the revolving door 2.

The inserting cylinder 13 further comprises a square pin 1301, a side groove 1302 and a handle 1303; a square pin 1301 is arranged on the inner side of the insertion cylinder 13 in a sliding mode; a side groove 1302 is formed in the middle of the bottom of the front side of the square pin 1301; the bottom of the side groove 1302 is rotatably provided with a handle 1303 through a hinge; a guide groove is formed in the middle of the front side of the insertion cylinder 13, and the handle 1303 can slide in the guide groove; the inner bottom of square pin 1301 is configured as a curved surface, and the bottom of square pin 1301 may be aligned with the top of return arm 16.

Wherein, the release link 16 further includes an insert 1601; an insert 1601 is integrally arranged at the bottom of the reset rod 16; a spring is sleeved on the outer side of the reset rod 16, and the insert 1601 can be inserted into wedge-shaped grooves at the tops of the middle frame 3 and the control rack 4 to fix the positions of the middle frame 3 and the control rack 4 in cooperation with the spring; the both ends homogeneous body of inserted block 1601 is provided with the round bar structure, and the outside round bar of inserted block 1601 slides and sets up in bar hole 201.

The working principle is as follows: when the device is used, the insert 1601 is lifted upwards through the round rod outside the strip-shaped hole 201, the reset rod 16 unlocks the middle frame 3 and the control rack 4, the hand wheel 503 is rotated clockwise, and the hand wheel 503 drives the control rack 4 to move, so that the revolving door 2 can be opened; after the revolving door 2 is opened forwards, the handwheel 503 is continuously rotated clockwise, when the contact rod 401 close to the joint of the revolving door 2 contacts the proximity switch 14 on the same side, the proximity switch 14 is triggered to open the LED lamp 15, one side of the control rack 4 fixes the angle of the revolving door 2 and the cabinet body 1, the handle 1303 is lifted to slide the square pin 1301, and one end of the square pin 1301 is made to slide to the top of the reset rod 16, so that the false locking can be prevented.

When the revolving door 2 is closed, the hand wheel 503 is rotated anticlockwise to move the control rack 4, meanwhile, the driven gear A9 is driven to rotate in the moving process of the control rack 4, the driven gear A9 drives the transmission rack A7 to move reversely to insert the side of the transmission rack A7 into the front inner side of the cabinet body 1 for fixing, meanwhile, one side of the control rack 4 is inserted into the front inner side of the cabinet body 1 for fixing, the control rack 4 drives the driven gear B10 to rotate, the driven gear B10 drives the transmission rack B8 to be close to the guide block 202, the metal sheet A801 is enabled to be connected with the two groups of wiring terminals 12 through the metal sheet B11, the two groups of wiring terminals 12 are connected in series by using the contactor of the electric control cabinet, power-off protection can be provided, the contactor cannot be started before the revolving.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.