A mine electrically operated reversing combination switch door interlocking mechanism

Abstract

The utility model discloses a kind of mine electric commutating combination switch door opening interlocking mechanism, including box, multiple drawer modules are equipped in box, the inner chamber of box is equipped with baffle, incoming line plum blossom contact and outgoing line plum blossom contact are respectively mounted on baffle;Baffle front side is rotatably connected rotating shaft by rotating shaft sleeve, rotating shaft surface is equipped with rotating disc, rotating disc eccentric position is connected with moving cross plate by transmission rod, incoming line contact baffle is connected in moving cross plate below, incoming line contact baffle respectively with incoming line plum blossom contact one to one correspondence, multiple strip guide holes are set up in the surface of moving cross plate, multiple guide columns are vertically fixedly installed on baffle front side, each guide column is respectively slidably connected in corresponding strip guide hole, further including control loop swing-in swing-out mechanism.The utility model overcomes the deficiency of prior art, effectively guarantee that switch door cannot be opened when electrified, switch door can be opened when power off.The need for isolation commutating switch interlock is not required.

Description

Technical Field

[0001] This utility model relates to the field of mining equipment technology, specifically to a mining electric reversing combination switch door opening interlocking mechanism. Background Technology

[0002] The explosion-proof and intrinsically safe multi-circuit high-voltage vacuum electromagnetic starter (referred to as the combination switch) is used for the control of high-voltage motors in the electrical control equipment of existing underground coal mining systems. With the continuous upgrading of intelligent mine construction in recent years, the structure of the explosion-proof and intrinsically safe combination switch with sliding quick-opening door has gradually become popular. Compared with the traditional bolt-fastened door, the sliding quick-opening door has the advantages of convenient maintenance and easy operation underground.

[0003] Currently, combination switches on the market typically require the installation of isolating reversing switches. These are generally housed within explosion-proof enclosures, which typically have sliding quick-opening doors. These doors require the door to be slid parallel to the surrounding surface before the explosion-proof pin can be released, allowing the door to be rotated outwards and opened. To ensure the safety of personnel and equipment, the isolating reversing switch must be interlocked with the sliding quick-opening door. This interlocking mechanism requires that the isolating reversing switch cannot be closed or opened when the sliding quick-opening door is open; it can only be closed or opened when the sliding quick-opening door is closed. Especially when implementing interlocking between two quick-opening doors, the resulting interlocking mechanism is overly complex, and the reliability of such complex mechanisms is often compromised. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a mine-use electric reversing combination switch door interlocking mechanism. This mechanism overcomes the deficiencies of existing technologies, features a reasonable design, and effectively ensures that the door cannot be opened when energized, and can only be opened when power is off. Furthermore, the entire mechanism does not require isolating the reversing switch for interlocking, and through the linkage operation of the control circuit's rocking-in and rocking-out mechanism, it can achieve synchronous locking and unlocking of the two doors, ensuring operational consistency.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A door opening interlocking mechanism for a mining electric reversing combination switch includes a housing, in which multiple drawer modules are provided. A partition is fixedly connected to the rear side of the inner cavity of the housing, and an inlet pendant and an outlet pendant are respectively installed on the partition. The moving contact of each drawer module is respectively engaged with each set of inlet pendant and outlet pendant contacts.

[0007] A rotating bushing is vertically fixed to the front side of the partition. One end of the rotating shaft is rotatably connected to the rotating bushing via a bearing. The other end of the rotating shaft passes through the front side of the housing and is fixedly mounted with a knob. A rotating disk is coaxially fixed to the surface of the rotating shaft. One end of the transmission rod is rotatably connected to the eccentric position of the rotating disk. The other end of the transmission rod is rotatably connected to the movable horizontal plate via a rotating shaft. Multiple inlet contact baffles are vertically fixed to the bottom of the movable horizontal plate. Each inlet contact baffle corresponds to a set of inlet pendant contacts. Multiple strip-shaped guide holes are opened on the surface of the movable horizontal plate. Multiple guide posts are vertically fixed to the front side of the partition. Each guide post corresponds to a strip-shaped guide hole, and each guide post is slidably connected in the corresponding strip-shaped guide hole.

[0008] Preferably, it further includes a control circuit rocking-in and rocking-out mechanism, which includes a drive shaft. One end of the drive shaft extends through the middle of the front side of the housing and is fixedly connected to a handle. The outer surface of the drive shaft is respectively provided with a positive thread section and a negative thread section. The outer surface of the positive thread section is connected to a positive thread nut sleeve by a thread. The positive thread nut sleeve is fixedly embedded in the first mounting plate. The rear side of the first mounting plate is connected to the conductive rod mounting plate through a connecting sleeve. A conductive rod is fixedly embedded in the middle of the conductive rod mounting plate. A control line sprite contact is fixedly installed on the partition. The rear end of the conductive rod is movably inserted into the control line sprite contact. A control line contact baffle is also vertically fixedly connected below the movable cross plate. The control line contact baffle corresponds to the control line sprite contact.

[0009] The outer surface of the reverse thread section is connected to a reverse nut sleeve by a thread. The reverse nut sleeve is fixedly embedded in the second mounting plate. A stop block is fixedly installed on the front side of the second mounting plate. Two opening and closing doors are symmetrically installed on the front side of the housing. The opening and closing doors are all connected to the housing by an independent sliding quick-opening door mechanism. A limit stop block is fixedly installed on the inner wall of the opening and closing door. The stop block and the limit stop block are in movable contact.

[0010] Preferably, the rotating shaft is rotatably connected to the front side of the housing via a bearing, a limiting ring is fixedly installed on the front side wall of the inner cavity of the housing, the limiting ring is coaxially arranged outside the rotating shaft, a limiting protrusion is provided on the rear end face of the limiting ring, a limiting sleeve is fixedly installed on the outer surface of the rotating shaft, a limiting shaft is fixedly installed radially on the outer surface of the limiting sleeve, and the limiting shaft and the limiting protrusion are in active contact.

[0011] Preferably, both ends of the transmission rod are provided with shaft holes, and both ends of the transmission rod are movably sleeved on the outer surface of the rotating stud through the shaft holes. The rotating stud is fixedly connected to the rotating disk and the moving cross plate, respectively.

[0012] Preferably, two support seats are fixedly installed on the front side wall of the inner cavity of the box. The two support seats are located on the left and right sides of the drive shaft, respectively. The rear end face of each support seat is fixedly connected to one end of the guide shaft. The other end of the guide shaft passes through the second mounting plate, the first mounting plate and the conductive rod mounting plate in sequence and is fixedly installed on the partition. The guide shaft is arranged parallel to the drive shaft, and the connecting sleeve is movably sleeved on the outer surface of the guide shaft.

[0013] Preferably, the guide shaft is movably connected to the second mounting plate, the first mounting plate, and the conductive rod mounting plate via bushings.

[0014] Preferably, both the positive thread segment and the negative thread segment adopt a two-thread screw structure.

[0015] This utility model provides a door opening interlocking mechanism for a mine-use electric reversing combination switch, which has the following beneficial effects: In the closed state, the knob drives the rotating shaft to rotate, thereby driving the horizontal plate to slide through the rotation of the rotating disk and the transmission rod, thus pushing the various incoming contact baffles and control contact baffles below the moving horizontal plate to move open synchronously, exposing each set of incoming and control contact pentagonal contacts. This allows the moving contacts on the drawer module to connect with the corresponding incoming and outgoing contact pentagonal contacts. Furthermore, rotating the handle drives the transmission shaft to rotate, which, based on the principle of threaded pairs, drives the positive and negative threaded nut sleeves to move synchronously in opposite directions along the axial direction of the transmission shaft. This allows the conductive rod to connect with the corresponding control contact pentagonal contact, while the stop block engages with the limiting stop block on the inner wall of the switch door. This effectively blocks the switch door, thus locking the switch door of the mine-use vacuum electromagnetic starter.

[0016] In the open position, rotating the handle in reverse causes the conductive rod to separate from the control line's pentagonal contact, simultaneously separating the stop block from the limit stop block on the inner wall of the switch door. This achieves the effect of synchronous interlocking of the locking rod when the conductive rod is energized and synchronous de-energizing the conductive rod when the locking rod is unlocked. The synchronous operation of the conductive rod and locking rod achieves a combined interlocking effect. Furthermore, after the moving contact on the drawer module separates from the corresponding inlet and outlet pentagonal contacts, rotating the knob back to the vertical position causes the rotating disc and transmission rod to return the inlet and control line contact baffles to their initial positions, blocking the in front of each set of inlet and control line pentagonal contacts. This effectively prevents accidental contact between the moving contact on the drawer module and the inlet and outlet pentagonal contacts due to misoperation, ensuring operational safety. Meanwhile, this design, through a mechanical linkage mechanism, further enhances the reliability and stability of the mining vacuum electromagnetic starter, ensuring the normal operation of the power system.

[0017] Furthermore, the entire mechanism does not require isolation of the reversing opening and closing interlock, and through the linkage operation of the control circuit's rocking in and rocking out mechanism, it can achieve synchronous locking and unlocking of the two opening and closing doors, ensuring operational consistency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in this utility model or the prior art, the accompanying drawings used in the description of this utility model or the prior art will be briefly introduced below.

[0019] Figure 1 A schematic diagram of the structure of this utility model;

[0020] Figure 2 A schematic diagram of the internal structure of the box body of this utility model;

[0021] Figure 3 A schematic diagram of the structure of the partition plate and the rotating shaft of this utility model;

[0022] Figure 4 This utility model contains a schematic diagram of the structure in which the movable horizontal plate and the inlet contact baffle are linked to the rotating shaft.

[0023] Figure 5 A schematic diagram of the control loop rocking in and rocking out mechanism in this utility model;

[0024] Explanation of the labels in the diagram:

[0025] 1. Housing; 2. Drawer module; 3. Divider; 4. Inlet pendant contact; 5. Outlet pendant contact; 6. Rotating bushing; 7. Rotating shaft; 8. Knob; 9. Rotating disc; 10. Transmission rod; 11. Moving cross plate; 12. Inlet contact baffle; 13. Strip guide hole; 14. Guide post; 15. Control line contact baffle; 16. Limit ring; 17. Limit sleeve; 18. Limit shaft; 21. Transmission shaft; 22. Handle; 23. Positive thread nut sleeve; 24. First mounting plate; 25. Connecting sleeve rod; 26. Conductive rod mounting plate; 27. Conductive rod; 28. Control line pendant contact; 29. ​​Reverse thread nut sleeve; 30. Second mounting plate; 31. Stop block; 32. Opening and closing door; 33. Sliding quick-opening door mechanism; 35. Support base; 36. Guide shaft; 161. Limit protrusion. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0027] Example 1, as Figure 1-5As shown, a mine electric reversing combination switch door opening interlocking mechanism includes a housing 1, a plurality of drawer modules 2 are provided inside the housing 1, a partition 3 is fixedly connected to the rear side of the inner cavity of the housing 1, and an inlet pendant 4 and an outlet pendant 5 are respectively installed on the partition 3. The moving contact of each group of drawer modules 2 cooperates with each group of inlet pendant contacts 4 and outlet pendant contacts 5 respectively.

[0028] A rotating bushing 6 is vertically fixedly installed on the front side of the partition 3. One end of the rotating shaft 7 is rotatably connected to the rotating bushing 6 through a bearing. The other end of the rotating shaft 7 passes through the front side of the housing 1 and is fixedly installed with a knob 8. A rotating disk 9 is coaxially fixedly installed on the surface of the rotating shaft 7. One end of the transmission rod 10 is rotatably connected to the eccentric position of the rotating disk 9. The other end of the transmission rod 10 is rotatably connected to the movable horizontal plate 11 through a rotating shaft. Multiple inlet contact baffles 12 are vertically fixedly connected below the movable horizontal plate 11. The inlet contact baffles 12 correspond one-to-one with each group of inlet pendant contacts 4. Multiple strip-shaped guide holes 13 are opened on the surface of the movable horizontal plate 11. Multiple guide posts 14 are vertically fixedly installed on the front side of the partition 3. The guide posts 14 correspond one-to-one with the strip-shaped guide holes 13, and each guide post 14 is slidably connected in the corresponding strip-shaped guide hole 13.

[0029] This utility model also includes a control circuit rocking-in and rocking-out mechanism, which includes a drive shaft 21. One end of the drive shaft 21 extends through the middle of the front side of the housing 1 and is fixedly connected to a handle 22. The outer surface of the drive shaft 21 is respectively provided with a positive thread section and a negative thread section. The outer surface of the positive thread section is connected to a positive thread nut sleeve 23 by thread. The positive thread nut sleeve 23 is fixedly embedded in the first mounting plate 24. The rear side of the first mounting plate 24 is connected to the conductive rod mounting plate 26 by a connecting sleeve 25. A conductive rod 27 is fixedly embedded in the middle of the conductive rod mounting plate 26. A control line sprite contact 28 is fixedly installed on the partition plate 3. The rear end of the conductive rod 27 is movably inserted into the control line sprite contact 28. A control line contact baffle 15 is also vertically fixedly connected below the moving horizontal plate 11. The control line contact baffle 15 corresponds to the control line sprite contact 28.

[0030] A reverse-threaded section has a reverse-threaded nut sleeve 29 threadedly connected to its outer surface. The reverse-threaded nut sleeve 29 is fixedly embedded in the second mounting plate 30. Stops 31 are fixedly installed at both ends of the front side of the second mounting plate 30. Two symmetrically mounted opening and closing doors 32 are mounted on the front side of the housing 1. Each opening and closing door 32 is movably connected to the housing 1 using an independent sliding quick-opening mechanism 33. Limiting blocks are fixedly installed on the inner wall of the opening and closing doors 32, and the stops 31 make movable contact with the limiting blocks. The sliding quick-opening mechanism 33 is existing technology, specifically including a drive shaft and a handle mounted on the drive shaft, and therefore will not be described in detail.

[0031] Working principle:

[0032] In the initial state, the knob 8 is rotated to the vertical position. At this time, each incoming contact baffle 12 is respectively blocking the front of each group of incoming pendulum contacts 4, and the control line contact baffle 15 is respectively blocking the front of the control line pendulum contact 28.

[0033] When the circuit is closed, the opening and closing doors 32 are in the closed state under the action of the sliding quick-opening door mechanism 33. Then, rotate knob 8 counterclockwise by 90 degrees. This will cause the rotating shaft 7 to rotate, which in turn will cause the rotating disk 9 on the rotating shaft 7 to rotate. Since the eccentric position of the rotating disk 9 is connected to the moving horizontal plate 11 through the transmission rod 10, and the moving horizontal plate 11 itself is slidably connected to the guide post 14 and the strip guide hole 13 through the guide post 14, when the rotating disk 9 rotates, the transmission action of the transmission rod 10 will cause the moving horizontal plate 11 to slide along the guide post 14 in the strip guide hole 13. This will push the various inlet contact baffles 12 and control contact baffles 15 below the moving horizontal plate 11 to move away synchronously, exposing the inlet pendulum contacts 4 and control pendulum contacts 28. Then, control the chassis mechanism of each drawer module 2 to push the moving contacts on each drawer module 2 to insert into the corresponding inlet pendulum contacts 4 and outlet pendulum contacts 5 located on the partition 3. Among them, the incoming line plum blossom contact 4 is a live part, so when the vacuum AC contactor inside the drawer module 2 is engaged, the outgoing line plum blossom contact 5 is energized, and when the vacuum AC contactor inside the drawer module 2 is disengaged, the outgoing line plum blossom contact 5 is not energized.

[0034] Then, by rotating the handle 22, the drive shaft 21 is rotated. Through the threaded connection between the positive thread nut sleeve 23 and the positive thread section on the outer surface of the drive shaft 21, and the threaded connection between the reverse thread nut sleeve 29 and the reverse thread section on the outer surface of the drive shaft 21, based on the principle of threaded pairs, the positive thread nut sleeve 23 and the reverse thread nut sleeve 29 are moved synchronously in opposite directions along the axial direction of the drive shaft 21 by the rotation of the drive shaft 21. Thus, the positive thread nut sleeve 23 can drive the first mounting plate 24 to move backward, and then through the connecting sleeve rod 25, it can synchronously drive the conductive rod mounting plate 26 to move towards the control line sprite contact 28, so that the conductive rod 27 on the conductive rod mounting plate 26 can be inserted into the corresponding control line sprite contact 28, so that the control circuit is energized to realize the closing action. At the same time, the reverse-tooth nut sleeve 29 also drives the second mounting plate 30 to move forward, which in turn drives the stop block 31 on the front side of the second mounting plate 30 to cooperate with the limit stop block on the inner wall of the switch door 32. Thus, the stop block 31 can effectively block the switch door 32, thereby achieving the effect of locking the switch door 32 of the mining vacuum electromagnetic starter.

[0035] Similarly, in the open state, the handle 22 is first rotated in the opposite direction to drive the transmission shaft 21 to rotate in the opposite direction. This causes the positive thread nut sleeve 23 and the negative thread nut sleeve 29 to move synchronously towards each other along the axial direction of the transmission shaft 21. The positive thread nut sleeve 23 then drives the first mounting plate 24 and the conductive rod mounting plate 26 to move in the opposite direction, causing the conductive rod 27 to separate from the control line sprite contact 28, thus de-energizing the control circuit. Simultaneously, the negative thread nut sleeve 29 drives the second mounting plate 30 to move rearward, causing the stop block 31 on the front side of the second mounting plate 30 to separate from the limit stop block on the inner wall of the switch door 32. Then, the chassis mechanism of the control drawer module 2 is used to pull the moving contacts on each drawer module 2 to separate from the incoming sprite contact 4 and the outgoing sprite contact 5. Then, rotate knob 8 to the vertical position. At this time, the rotation of rotating disk 9 and the transmission action of transmission rod 10 drive the moving horizontal plate 11 to slide in the opposite direction, thereby driving each incoming contact baffle 12 and control line contact baffle 15 back to their initial positions to block the front of each set of incoming pendulum contacts 4 and control line pendulum contacts 28. Then, the sliding quick-opening door mechanism 33 unlocks the door 32, allowing it to open smoothly. The entire process achieves a combined linkage effect of power failure and door opening. This effectively ensures that the door 32 cannot be opened when energized, and can only be opened when power is off. This effectively ensures operational safety and prevents accidents caused by misoperation.

[0036] The entire mechanism does not require isolation of the reversing opening and closing interlock, and through the linkage operation of the control circuit rocking in and rocking out mechanism, it can achieve synchronous locking and unlocking of the two opening and closing doors 32, ensuring operational consistency.

[0037] In Example 2, as a further preferred embodiment of Example 1, the rotating shaft 7 is rotatably connected to the front side of the housing 1 via a bearing. A limiting ring 16 is fixedly installed on the front side wall of the inner cavity of the housing 1. The limiting ring 16 is coaxially arranged outside the rotating shaft 7. A limiting protrusion 161 is provided on the rear end face of the limiting ring 16. A limiting sleeve 17 is fixedly installed on the outer surface of the rotating shaft 7. A limiting shaft 18 is fixedly installed radially on the outer surface of the limiting sleeve 17. The limiting shaft 18 and the limiting protrusion 161 are in active contact.

[0038] By setting a limiting ring 16 and making the limiting protrusion 161 on the end face of the limiting ring 16 cooperate with the limiting shaft 18 of the limiting sleeve 17, when the control knob 8 is rotated, the limiting protrusion 161 can limit the knob 8 to rotate only within a predetermined angle, thereby ensuring the operating accuracy and safety of the knob 8 and preventing damage to the mechanism or misoperation caused by excessive rotation.

[0039] In embodiment three, as a further preferred embodiment one, both ends of the transmission rod 10 are provided with shaft holes. Both ends of the transmission rod 10 are movably sleeved on the outer surface of the rotating stud through the shaft holes. The rotating stud is fixedly connected to the rotating disk 9 and the movable horizontal plate 11, respectively. Through the rotational connection between the rotating stud and the shaft holes, the stability and flexibility of the transmission rod 10 during transmission can be effectively ensured.

[0040] In Example 4, as a further preferred embodiment of Example 1, two support seats 35 are fixedly installed on the front side wall of the inner cavity of the housing 1. The two support seats 35 are located on the left and right sides of the drive shaft 21, respectively. The rear end face of each support seat 35 is fixedly connected to one end of a guide shaft 36. The other end of the guide shaft 36 passes through the second mounting plate 30, the first mounting plate 24, and the conductive rod mounting plate 26 in sequence and is fixedly installed on the partition plate 3. The guide shaft 36 is arranged parallel to the drive shaft 21, and the connecting sleeve 25 is movably sleeved on the outer surface of the guide shaft 36. The guide shaft 36 is movably connected to the second mounting plate 30, the first mounting plate 24, and the conductive rod mounting plate 26 through bushings.

[0041] By setting two parallel guide shafts 36, and allowing the second mounting plate 30, the first mounting plate 24, and the conductive rod mounting plate 26 to be movably sleeved on the outer surface of the guide shafts 36, the guiding and supporting effect of the guide shafts 36 can achieve a limiting and guiding effect on the second mounting plate 30, the first mounting plate 24, and the conductive rod mounting plate 26, ensuring the stability of the second mounting plate 30, the first mounting plate 24, and the conductive rod mounting plate 26 during sliding, effectively preventing angular rotation of the second mounting plate 30, the first mounting plate 24, and the conductive rod mounting plate 26 during sliding. At the same time, it also effectively reduces wear caused by friction, ensuring the long-term reliability of the equipment. This design not only improves the operating accuracy of the equipment but also significantly enhances its durability and safety, ensuring stable operation in various working environments, extending the service life of the equipment, and reducing maintenance costs.

[0042] In Example 5, as a further preferred embodiment of Example 1, both the positive thread section and the negative thread section adopt a two-thread screw structure. By adopting a two-thread screw structure, the lead is effectively increased, thereby effectively reducing the number of rotations of the handle 22, achieving the purpose of fast in and fast out.

[0043] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A door opening interlocking mechanism for a mining electric reversing combination switch, comprising a housing (1), wherein a plurality of drawer modules (2) are provided inside the housing (1), and a partition (3) is fixedly connected to the rear side of the inner cavity of the housing (1), wherein an inlet plum blossom contact (4) and an outlet plum blossom contact (5) are respectively installed on the partition (3), and the moving contact of each group of drawer modules (2) is respectively engaged with each group of inlet plum blossom contact (4) and outlet plum blossom contact (5); Its features are: A rotating bushing (6) is vertically fixedly installed on the front side of the partition (3). One end of a rotating shaft (7) is rotatably connected to the rotating bushing (6) through a bearing. The other end of the rotating shaft (7) passes through the front side of the housing (1) and is fixedly installed with a knob (8). A rotating disk (9) is coaxially fixedly installed on the surface of the rotating shaft (7). One end of a transmission rod (10) is rotatably connected to the eccentric position of the rotating disk (9). The other end of the transmission rod (10) is rotatably connected to the movable cross plate (11) through a rotating shaft. Multiple incoming contact baffles (12) are vertically fixedly connected below the movable horizontal plate (11). The incoming contact baffles (12) correspond one-to-one with each group of incoming plum blossom contacts (4). Multiple strip-shaped guide holes (13) are opened on the surface of the movable horizontal plate (11). Multiple guide posts (14) are vertically fixedly installed on the front side of the partition plate (3). The guide posts (14) correspond one-to-one with the strip-shaped guide holes (13), and each guide post (14) is slidably connected in the corresponding strip-shaped guide hole (13).

2. The mine electric reversing combination switch door opening interlocking mechanism according to claim 1, characterized in that: It also includes a control loop rocking-in and rocking-out mechanism, which includes a drive shaft (21). One end of the drive shaft (21) extends through the middle of the front side of the housing (1) and is fixedly connected to a handle (22). The outer surface of the drive shaft (21) is respectively provided with a positive thread section and a negative thread section. The outer surface of the positive thread section is connected to a positive thread nut sleeve (23) by a thread. The positive thread nut sleeve (23) is fixedly embedded on the first mounting plate (24). The rear side of the first mounting plate (24) The surface is connected to the conductive rod mounting plate (26) via the connecting sleeve (25). A conductive rod (27) is fixedly embedded in the middle of the conductive rod mounting plate (26). A control line plum blossom contact (28) is fixedly installed on the partition plate (3). The rear end of the conductive rod (27) is movably inserted into the control line plum blossom contact (28). A control line contact baffle (15) is also vertically fixedly connected below the movable horizontal plate (11). The control line contact baffle (15) corresponds to the control line plum blossom contact (28). The outer surface of the reverse thread section is connected by a reverse nut sleeve (29) through a thread. The reverse nut sleeve (29) is fixedly embedded in the second mounting plate (30). A stop block (31) is fixedly installed on the front side of the second mounting plate (30). Two opening and closing doors (32) are symmetrically installed on the front side of the box (1). The opening and closing doors (32) are all connected to the box (1) by an independent sliding quick-opening door mechanism (33). A limit stop block is fixedly installed on the inner wall of the opening and closing door (32). The stop block (31) is in active contact with the limit stop block.

3. The mine electric reversing combination switch door opening interlocking mechanism according to claim 1, characterized in that: The rotating shaft (7) is rotatably connected to the front side of the housing (1) by a bearing. A limiting ring (16) is fixedly installed on the front side wall of the inner cavity of the housing (1). The limiting ring (16) is coaxially arranged outside the rotating shaft (7). A limiting protrusion (161) is provided on the rear end face of the limiting ring (16). A limiting sleeve (17) is fixedly installed on the outer surface of the rotating shaft (7). A limiting shaft (18) is fixedly installed on the outer surface of the limiting sleeve (17) radially. The limiting shaft (18) and the limiting protrusion (161) are in active contact.

4. The mine electric reversing combination switch door opening interlocking mechanism according to claim 1, characterized in that: Both ends of the transmission rod (10) are provided with shaft holes. Both ends of the transmission rod (10) are movably sleeved on the outer surface of the rotating stud through the shaft holes. The rotating stud is fixedly connected to the rotating disk (9) and the moving horizontal plate (11) respectively.

5. The mine electric reversing combination switch door opening interlocking mechanism according to claim 2, characterized in that: Two support seats (35) are fixedly installed on the front side wall of the inner cavity of the box (1). The two support seats (35) are located on the left and right sides of the transmission shaft (21) respectively. The rear end face of each support seat (35) is fixedly connected to one end of the guide shaft (36). The other end of the guide shaft (36) passes through the second mounting plate (30), the first mounting plate (24) and the conductive rod mounting plate (26) in sequence and is fixedly installed on the partition plate (3). The guide shaft (36) is arranged parallel to the transmission shaft (21). The connecting sleeve (25) is movably sleeved on the outer surface of the guide shaft (36).

6. The mine electric reversing combination switch door opening interlocking mechanism according to claim 5, characterized in that: The guide shaft (36) is movably connected to the second mounting plate (30), the first mounting plate (24) and the conductive rod mounting plate (26) through bushings.

7. The mine electric reversing combination switch door opening interlocking mechanism according to claim 2, characterized in that: Both the positive thread section and the negative thread section adopt a two-thread screw structure.

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