CN221651341U - A power connection structure and a flameproof feeder switch for mines - Google Patents

Abstract

The present application relates to the technical field of explosion-proof switches for mines, and specifically discloses a power connection structure and a explosion-proof feeder switch for mines. The power connection structure includes an incoming line assembly, an outgoing line assembly, and an isolating knife switch assembly. The incoming line assembly includes an incoming line post and a static contact connected to the incoming line post. The outgoing line assembly includes an outgoing line post and a fixed head connected to the outgoing line post. The isolating knife switch assembly includes an isolating blade, one end of the isolating blade is hinged to the fixed head, and the other end is used to abut against the static contact. The explosion-proof feeder switch for mines of the present application has the effect of simplifying the structure and optimizing the layout, can reduce the complexity and uncertainty of the explosion-proof feeder switch for mines, reduce the failure rate of the equipment, and is more convenient for maintenance and servicing, thereby reducing the overall cost of the equipment.

Description

A power connection structure and a flameproof feeder switch for mines

Technical Field

The present application relates to the technical field of explosion-proof switches for mines, and in particular to a power connection structure and an explosion-proof feeder switch for mines.

Background Art

The flameproof feeder switch for mines is a device designed for underground power supply systems in coal mines. It has explosion-proof function and can operate safely in an environment containing explosive gas. Its main functions include overload protection, short circuit protection, undervoltage protection and leakage protection, which can effectively protect the safety of power supply systems and electrical equipment. In addition, the flameproof feeder switch for mines also has the characteristics of strong breaking capacity and fast analysis speed, which can quickly cut off the fault line and reduce the scope of fault impact.

In the related technology, the mine explosion-proof feeder switch includes an incoming line pole, an isolating knife switch assembly and an outgoing line pole. The incoming line pole and the isolating knife switch assembly, as well as the isolating knife switch assembly and the outgoing line pole are electrically connected through copper busbars to achieve conduction between the isolating knife switch assembly and the high-voltage cable, and three groups of incoming line poles, knife switches and outgoing line poles are provided.

The above technical solution still has the following defects: the internal overall layout of the mine flameproof feeder switch is complex and compact, and the setting of the copper busbar not only takes up a large space, but also makes it inconvenient to perform wiring operations.

Utility Model Content

In order to simplify the structure, the present application provides a power connection structure and a mine flameproof feeder switch.

In the first aspect, the present application provides a power connection structure, which adopts the following technical solution:

A power connection structure includes an incoming line assembly, an outgoing line assembly and an isolating knife switch assembly, wherein the incoming line assembly includes an incoming line post and a static contact connected to the incoming line post, the outgoing line assembly includes an outgoing line post and a fixed head connected to the outgoing line post, and the isolating knife switch assembly includes an isolating blade, one end of the isolating blade is hinged to the fixed head, and the other end is used to abut against the static contact.

By adopting the above technical solution, the incoming line assembly and the isolating knife switch assembly, and the isolating knife switch assembly and the outgoing line assembly are directly connected without the need for copper busbar conduction. Since the number of parts in the power connection structure is reduced, it means that the structure is simplified, the complexity and uncertainty of the equipment are reduced, the failure points can be reduced, the equipment failure rate can be reduced, and maintenance and maintenance are more convenient, thereby reducing the overall cost of the equipment. At the same time, the simplified structure helps to optimize the performance of the power connection structure, making it more stable and efficient, thereby improving the reliability of the equipment.

Optionally, the isolation blade includes a first contact piece and a second contact piece, the gap between the first contact piece and the second contact piece is used for inserting the stationary contact, and the first contact piece and the second contact piece are hinged to two sides of the fixed head respectively.

By adopting the above technical solution, the contact area between the isolation blade and the static contact can be increased, the contact resistance is reduced, and the path of the current flowing through the contact surface becomes longer, so the current flows more easily. Secondly, the stability of the electrical connection is improved by increasing the friction force, thereby reducing the situation of loose connection or disconnection. In addition, after long-term use or multiple switches, the contact surface may be worn or oxidized, resulting in poor contact, while a larger contact area can provide more conduction channels, making the electrical connection more reliable.

Optionally, the isolation knife switch assembly further includes a driving member and a linkage member connected to the driving member, wherein the linkage member is connected to the isolation blade, and the driving member includes an operating handle and a rotating rod connected to the operating handle, wherein the rotating rod is connected to the linkage member.

By adopting the above technical solution, the operator can operate the driving member to control the switch of the isolation knife switch assembly, and the linkage member plays a linkage role between the isolation knife switch assembly and the driving member.

Optionally, the linkage member includes a connecting block and a movable block, the connecting block is connected to the rotating rod, one end of the movable block is hinged to the connecting block, and the other end is inserted into the isolation blade and hinged to the isolation blade.

By adopting the above technical solution, the movable block is used to pull the first contact piece and the second contact piece, thereby controlling the relative position of the isolation blade and the fixed contact, so that the isolation blade moves in a circle with the fixed head as the center.

Optionally, a side of the movable block close to the rotating rod is connected to a limiting block, and the limiting block is used to abut against the rotating rod.

By adopting the above technical solution, when the isolation blade is connected to the stationary contact, the limit block abuts against the rotating rod, which makes it less likely for the isolation blade to rotate excessively, and at the same time prevents the operator from continuing to rotate the operating handle.

In the second aspect, the present application provides a mine flameproof feeder switch, which adopts the following technical solution:

A flameproof feeder switch for mining comprises the above-mentioned power connection structure and a shell, on which a locking assembly is arranged.

By adopting the above technical solution, the space occupied by the power connection structure in the mine flameproof feeder switch is reduced, which can reduce the volume of the mine flameproof feeder switch equipment, or the equipment can be upgraded and expanded on the original basis to provide layout space for the addition of components.

Optionally, the locking assembly includes an adjusting plate and a positioning piece inserted into the adjusting plate, the adjusting plate is connected to the operating handle, an oblong hole and two through holes are provided on the adjusting plate, the through holes are arranged at both ends of the oblong hole, the oblong hole is used for the positioning piece to slide, and the inner wall of the through hole is clamped with the positioning piece.

By adopting the above technical solution, when the power connection structure is working normally or in a disconnected state, the locking assembly can lock the drive member to prevent the operating handle from rotating due to accidental collision, thereby affecting the operation of the mine flameproof feeder switch.

Optionally, the positioning member includes a accommodating tube and a pressing rod inserted into the accommodating tube, the outer side wall of the pressing rod is connected to a contact block, the outer wall of the pressing rod is sleeved with an elastic member, one end of the elastic member abuts against the inner wall of the accommodating tube, and the other end abuts against the abutment block, the abutment block abuts against the inner wall of the perforation, and the oblong hole is used for the pressing rod to slide.

By adopting the above technical solution, the positioning member has a relatively simple structure and is easy to operate. When the adjusting plate rotates, the pressing rod is controlled to slide toward the inside of the accommodating tube, and the elastic member is compressed. At this time, the head end of the pressing rod moves relatively in the oblong hole to another through hole. After that, the pressing rod is released, and the elastic force of the elastic member pushes the pressing rod to move toward the outside of the accommodating groove, so that the abutment block is stuck in the through hole, and the operating handle cannot be rotated.

Optionally, an operating member is connected to one side of the shell near the positioning member, and the operating member includes a support block and a screw threadedly connected to the support block, the support block is connected to the shell, and one end of the screw is used to be plugged into the adjustment piece.

By adopting the above technical solution, the screw can be moved horizontally toward or away from one side of the positioning piece. When the mine flameproof feeder switch is in the disconnected state for maintenance, the screw can be inserted into the adjusting plate. Even if the positioning piece is pressed manually, the operating handle cannot be turned, thereby effectively ensuring the safety of the operator.

In summary, this application has the following beneficial effects:

1. By setting a simplified power connection structure, reducing the volume of the power connection structure and optimizing the layout, the complexity and uncertainty of the mine flameproof feeder switch can be reduced, the equipment failure rate can be reduced, and maintenance and maintenance are more convenient, thereby reducing the overall cost of the equipment;

2. By setting up a locking assembly, when the power connection structure is in normal working or disconnected state, the locking assembly can lock the driving part to prevent the operating handle from rotating due to accidental collision, affecting the operation of the mine flameproof feeder switch.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of a flameproof feeder switch for mining according to an embodiment of the present application;

FIG2 is a cross-sectional view of a mine flameproof feeder switch according to an embodiment of the present application;

FIG3 is a schematic diagram of a power connection structure in a first viewing angle of an embodiment of the present application;

FIG4 is a schematic diagram of the structure of the power connection structure in the second viewing angle of the embodiment of the present application;

FIG5 is a schematic diagram of the structure of the power connection structure and the locking assembly of an embodiment of the present application;

FIG. 6 is a cross-sectional view of a positioning member according to an embodiment of the present application.

Explanation of the accompanying drawings: 1. Incoming line assembly; 11. Incoming line post; 12. Static contact; 2. Outgoing line assembly; 21. Outgoing line post; 22. Fixed head; 3. Isolating knife switch assembly; 31. Isolating blade; 311. First contact piece; 312. Second contact piece; 32. Driving member; 321. Operating handle; 322. Rotating rod; 33. Linkage member; 331. Connecting block; 332. Movable block; 333. Limiting block; 4. Shell; 5. Locking assembly; 51. Adjusting piece; 511. Oblong hole; 512. Perforation; 52. Positioning member; 521. Accommodating cylinder; 522. Pressing rod; 523. Abutting block; 524. Elastic member; 53. Operating member; 531. Support block; 532. Screw.

DETAILED DESCRIPTION

The present application is further described in detail below in conjunction with Figures 1-6.

The embodiments of the present application disclose a power connection structure and a flameproof feeder switch for mining.

1 and 2, the flameproof feeder switch for mining includes a housing 4, a power connection structure disposed in the housing 4, and a locking assembly 5 disposed on the outer wall of the housing 4, wherein the locking assembly 5 is used to lock the power connection structure. It should be noted that, except for the power connection mechanism and the locking assembly 5, the remaining components of the flameproof feeder switch for mining are all prior art and will not be described in detail herein.

Referring to Figure 3, the power connection structure includes an incoming line assembly 1, an outgoing line assembly 2 and an isolating knife switch assembly 3, and the isolating knife switch assembly 3 is connected through the incoming line assembly 1 and the outgoing line assembly 2. The incoming line assembly 1 is arranged on the upper side of the isolating knife switch assembly 3, and includes an incoming line column 11 and a static contact 12, and the static contact 12 is fixedly connected to the side of the incoming line column 11 close to the isolating knife switch assembly 3. The outgoing line assembly 2 is arranged on the lower side of the isolating knife switch assembly 3, and includes an outgoing line column 21 and a fixed head 22, and the fixed head 22 is fixedly connected to the side of the outgoing line column 21 close to the isolating knife switch assembly 3.

The isolation knife switch assembly 3 includes an isolation blade 31, a driving member 32 and a linkage member 33. The isolation blade 31 includes a first contact piece 311 and a second contact piece 312. The first contact piece 311 and the second contact piece 312 have the same shape and are arranged opposite to each other. The first contact piece 311 and the lower side ends of the first contact piece 311 are hinged to the two sides of the fixed head 22. The gap formed between the upper side ends of the first contact piece 311 and the second contact piece 312 is used for the static contact 12 to be inserted. The inner side walls of the first contact piece 311 and the second contact piece 312 are both in contact with the static contact 12.

3 and 4, one side of the linkage member 33 is fixedly connected to the driving member 32, and the other side is hinged to the isolation blade 31. When the driving member 32 is rotated, the linkage member 33 can drive the isolation blade 31 to rotate. The driving member 32 includes an operating handle 321 and a rotating rod 322. The operating handle 321 is fixedly connected to one end of the rotating rod 322, and the rotating rod 322 is set as a square rod. The linkage member 33 includes a connecting block 331, a movable block 332 and a limit block 333. The connecting block 331 is in a "U" shape. The bottom of the connecting block 331 is fixedly connected to the rotating rod 322. One end of the movable block 332 is hinged to the connecting block 331, and the other end is inserted between the first contact piece 311 and the second contact piece 312 and is hinged to the first contact piece 311 and the second contact piece 312.

When the connecting block 331 rotates to the top of the rotating rod 322, the static contact 12 is inserted between the first contact piece 311 and the second contact piece 312, the switch is closed, and the electrical connection is achieved; when the connecting block 331 rotates to the side of the rotating rod 322, the static contact 12 and the first contact piece 311 and the second contact piece 312 are disconnected, and the circuit is disconnected.

1 and 5 , the locking assembly 5 includes an adjusting piece 51, a positioning piece 52 and an operating piece 53. The adjusting piece 51 is in a fan-shaped structure. One end of the adjusting piece 51 is sleeved on the outside of the operating handle 321 and is fixedly connected to the operating handle 321. The adjusting piece 51 is provided with an oblong hole 511 for inserting the positioning piece 52 and two through holes 512. The setting direction of the oblong hole 511 is consistent with the rotation direction of the adjusting piece 51. The through holes 512 are connected to the oblong hole 511 and are arranged at both ends of the oblong hole 511. The inner diameter of the through hole 512 is larger than the width of the oblong hole 511.

5 and 6, the positioning member 52 includes a receiving tube 521 and a pressing rod 522 slidably disposed in the receiving tube 521, and an abutting block 523 is fixedly connected to the outer peripheral side wall of the pressing rod 522, and the abutting block 523 is engaged with the adjusting plate 51 through the through hole 512, and the head end of the pressing rod 522 slides in the oblong hole 511. The outer wall of the pressing rod 522 is sleeved with an elastic member 524, and the elastic member 524 is disposed between the abutting block 523 and the inner wall of the receiving groove. When the pressing rod 522 is pushed, the abutting block 523 enters the receiving tube 521, the elastic member 524 is compressed, and the adjusting plate 51 can rotate.

1 and 5 , the operating member 53 includes a support block 531 and a screw 532 . The support block 531 is fixedly connected to the housing 4 , and the screw 532 is threadedly connected to the support block 531 . When the switch is in the off state, the screw 532 is used to be plugged into the adjustment sheet 51 , so that the operating handle 321 cannot rotate.

The implementation principle of the power connection structure and the flameproof feeder switch for mining of the embodiment of the present application is as follows: when the switch is turned off, the abutment block 523 is controlled to slide from the through hole 512 into the receiving groove, and the operating handle 321 is rotated to move the pressing rod 522 through the oblong hole 511 to another through hole 512. At this time, the rotating rod 322 rotates, driving the isolation blade 31 to rotate, so that the isolation blade 31 is disconnected from the static contact 12, and the circuit in the switch is disconnected. Then the screw rod 532 is rotated and the screw rod 532 is inserted into the adjusting piece 51 to limit the rotation of the operating handle 321.

The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims (9)

1. A power connection structure, comprising an incoming line assembly (1), an outgoing line assembly (2) and an isolating knife switch assembly (3), characterized in that: the incoming line assembly (1) comprises an incoming line post (11) and a stationary contact (12) connected to the incoming line post (11), the outgoing line assembly (2) comprises an outgoing line post (21) and a fixed head (22) connected to the outgoing line post (21), and the isolating knife switch assembly (3) comprises an isolating blade (31), one end of the isolating blade (31) is hinged to the fixed head (22), and the other end is used to abut against the stationary contact (12). 2. The power connection structure according to claim 1 is characterized in that: the isolation blade (31) comprises a first contact piece (311) and a second contact piece (312), the gap between the first contact piece (311) and the second contact piece (312) is used for inserting the static contact (12), and the first contact piece (311) and the second contact piece (312) are respectively hinged on both sides of the fixed head (22). 3. The power connection structure according to claim 1 is characterized in that: the isolation knife switch assembly (3) also includes a driving member (32) and a linkage member (33) connected to the driving member (32), the linkage member (33) is connected to the isolation blade (31), the driving member (32) includes an operating handle (321), a rotating rod (322) connected to the operating handle (321), and the rotating rod (322) is connected to the linkage member (33). 4. The power connection structure according to claim 3 is characterized in that: the linkage member (33) includes a connecting block (331) and a movable block (332), the connecting block (331) is connected to the rotating rod (322), one end of the movable block (332) is hinged to the connecting block (331), and the other end is inserted into the isolation blade (31) and hinged to the isolation blade (31). 5. The power connection structure according to claim 4, characterized in that: a side of the movable block (332) close to the rotating rod (322) is connected to a limiting block (333), and the limiting block (333) is used to abut against the rotating rod (322). 6. A flameproof feeder switch for mining, characterized in that it comprises the power connection structure according to any one of claims 1 to 5, and further comprises a shell (4), wherein a locking assembly (5) is arranged on the shell (4). 7. The explosion-proof feeder switch for mining according to claim 6 is characterized in that: the locking assembly (5) comprises an adjusting piece (51) and a positioning piece (52) plugged into the adjusting piece (51), the adjusting piece (51) is connected to the operating handle (321), an oblong hole (511) and two through holes (512) are provided on the adjusting piece (51), the through holes (512) are arranged at both ends of the oblong hole (511), the oblong hole (511) is used for the positioning piece (52) to slide, and the inner wall of the through hole (512) is snap-fitted with the positioning piece (52). 8. The explosion-proof feeder switch for mining according to claim 7 is characterized in that: the positioning member (52) includes a accommodating tube (521), a pressing rod (522) inserted into the accommodating tube (521), the outer peripheral side wall of the pressing rod (522) is connected with a contact block (523), the outer wall of the pressing rod (522) is sleeved with an elastic member (524), one end of the elastic member (524) is in contact with the inner wall of the accommodating tube (521), and the other end is in contact with the contact block (523), the contact block (523) is in contact with the inner wall of the through hole (512), and the oblong hole (511) is used for the pressing rod (522) to slide. 9. The explosion-proof feeder switch for mining according to claim 8 is characterized in that an operating member (53) is connected to one side of the housing (4) close to the positioning member (52), and the operating member (53) includes a support block (531) and a screw rod (532) threadedly connected to the support block (531), the support block (531) is connected to the housing (4), and one end of the screw rod (532) is used for plugging with the adjusting piece (51).