Door opening interlocking mechanism of mining electric reversing combination switch

Abstract

The invention discloses a mining electric reversing combination switch door opening interlocking mechanism which comprises a box body, a plurality of drawer modules are arranged in the box body, a partition plate is arranged in an inner cavity of the box body, and a wire inlet tulip contact and a wire outlet tulip contact are arranged on the partition plate. The front side of the partition plate is rotationally connected with a rotating shaft through a rotating shaft sleeve, a rotating disc is installed on the surface of the rotating shaft, the eccentric position of the rotating disc is connected with a movable transverse plate through a transmission rod, wire inlet contact baffles are connected to the lower portion of the movable transverse plate and correspond to wire inlet plum blossom contacts one to one, and a plurality of strip-shaped guide holes are formed in the surface of the movable transverse plate. A plurality of guide columns are vertically and fixedly installed on the front side face of the partition plate, each guide column is connected into the corresponding strip-shaped guide hole in a sliding mode, and a control loop shaking-in and shaking-out mechanism is further included. The defects in the prior art are overcome, and the effect that the opening and closing door cannot be opened during electrification and can only be opened during outage is effectively guaranteed. And isolation change-over switch interlocking is not needed.

Description

Technical Field

[0001] The invention relates to the technical field of mining equipment, in particular to a door opening interlocking mechanism of a mining electric reversing combination switch. Background Art

[0002] Mine-use flameproof and intrinsically safe multi-circuit high-voltage vacuum electromagnetic starters (combination switches for short) are used to control high-voltage motors in the electrical control equipment of existing underground coal mining systems. With the continuous upgrading of intelligent mining construction in recent years, the structure of mine-use flameproof and intrinsically safe combination switches with sliding quick-opening doors has gradually become popular. Compared with traditional bolt-fastened doors, the sliding quick-opening door structure has the advantages of convenient maintenance and easy operation underground.

[0003] Currently, combination switches on the market typically require an isolating reversing switch, which is typically housed within an explosion-proof enclosure. This enclosure is equipped with a sliding, quick-opening door. This door must first be translated parallel to the door body before the explosion-proof pin can be released and the door can then be rotated outward to open. To ensure the safety of personnel and equipment, a joint locking mechanism must be established between the isolating reversing switch and the sliding quick-opening door. This joint locking mechanism prevents the isolating reversing switch from closing or opening when the sliding quick-opening door is open, and requires the sliding quick-opening door to be closed before the isolating reversing switch can be closed or opened. This interlocking mechanism is particularly complex for interlocking two quick-opening doors, and its reliability is often not guaranteed. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention provides a door-opening interlocking mechanism for a mine-use electric reversing combination switch. This mechanism overcomes these shortcomings and features a rational design, effectively ensuring that the switch door cannot be opened when energized and can only be opened when de-energized. Furthermore, the entire mechanism eliminates the need for isolating the reversing switch interlocking. By leveraging the control circuit's swing-in and swing-out mechanisms, the two switch doors can be locked and unlocked synchronously, ensuring consistent operation.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A door opening interlock mechanism for an electric reversing combination switch for use in a mine, comprising a housing, a plurality of drawer modules disposed within the housing, a partition fixedly connected to the rear side of the housing cavity, an incoming line plum blossom contact and an outgoing line plum blossom contact respectively mounted on the partition, and a movable contact of each set of drawer modules respectively cooperating with each set of incoming line plum blossom contacts and outgoing line plum blossom contacts; A rotating sleeve is vertically fixedly installed on the front side of the partition, and one end of the rotating shaft is rotatably connected to the rotating sleeve through a bearing, and the other end of the rotating shaft passes through the front side of the box and is fixedly installed with a knob, and a rotating disk is coaxially fixedly installed on the surface of the rotating shaft, and the eccentric position of the rotating disk is rotatably connected to one end of the transmission rod, and the other end of the transmission rod is rotatably connected to the movable horizontal plate through a rotating shaft, and a plurality of incoming contact baffles are vertically fixedly connected below the movable horizontal plate, and the incoming contact baffles correspond one-to-one to each group of incoming plum blossom contacts, and a plurality of strip guide holes are opened on the surface of the movable horizontal plate, and a plurality of guide columns are vertically fixedly installed on the front side of the partition, and the guide columns correspond one-to-one to the strip guide holes, and each guide column is slidably connected to the corresponding strip guide hole.

[0006] Preferably, it also includes a control circuit rocking-in and rocking-out mechanism, the control circuit rocking-in and rocking-out mechanism includes a transmission shaft, one end of the transmission shaft passes through the middle of the front side surface of the box body and is fixedly connected to a handle, the outer surfaces of the transmission shaft are respectively provided with a positive thread section and a negative thread section, the outer surfaces of the positive thread sections are connected with a positive nut sleeve through threads, the positive 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 rod, a conductive rod is fixedly embedded in the middle of the conductive rod mounting plate, a control wire plum blossom contact is fixedly installed on the partition, and the rear end of the conductive rod is movably plugged with the control wire plum blossom contact; a control wire contact baffle is also vertically fixedly connected to the bottom of the movable horizontal plate, and the control wire contact baffle corresponds to the control wire plum blossom contact; The outer surface of the reverse thread segment is connected to a reverse nut sleeve through a thread, and the reverse nut sleeve is fixedly embedded in the second mounting plate. A block is fixedly installed on the front side of the second mounting plate. Two switch doors are symmetrically installed on the front side of the box body, and the switch doors are movably connected to the box body by an independent translational quick-opening mechanism; a limit block is fixedly installed on the inner wall of the switch door, and the block is movably contacted and cooperated with the limit block.

[0007] Preferably, the rotating shaft and the front side surface of the box body are rotatably connected via a bearing, a limiting ring is fixedly installed on the front side wall of the inner cavity of the box body, the limiting ring is coaxially arranged on the outside of 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 on the outer surface of the limiting sleeve along the radial direction, and the limiting shaft and the limiting protrusion are in coordinated and movable contact.

[0008] 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, and the rotating stud is fixedly connected to the rotating disk and the movable horizontal plate respectively.

[0009] Preferably, two support seats are fixedly installed on the front side wall of the inner cavity of the box body, and the two support seats are respectively located on the left and right sides of the transmission shaft. The rear end faces of the support seats are respectively fixedly connected to one end of the guide shaft, and 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 transmission shaft, and the connecting sleeve rod is movably sleeved on the outer surface of the guide shaft.

[0010] Preferably, the guide shaft is movably connected to the second mounting plate, the first mounting plate and the conductive rod mounting plate respectively through shaft sleeves.

[0011] Preferably, the positive thread segment and the negative thread segment both adopt a two-thread thread structure.

[0012] The present invention provides a door opening interlock mechanism for a mine electric reversing combination switch, which has the following beneficial effects: when the switch is closed, a knob is used to drive the rotation of the rotating shaft, thereby driving the horizontal line of the movable horizontal plate to slide through the rotation of the rotating disk and the transmission action of the transmission rod, thereby pushing the various incoming line contact baffles and control line contact baffles below the movable horizontal plate to move synchronously, exposing each group of incoming line plum blossom contacts and control line plum blossom contacts, thereby controlling the dynamic contacts on the drawer module to connect with the corresponding incoming line plum blossom contacts and outgoing line plum blossom contacts. The handle is then rotated to drive the transmission shaft, and then, based on the principle of a threaded pair, the positive thread nut sleeve and the negative thread nut sleeve are driven to move synchronously in opposite directions along the axial direction of the transmission shaft, so that the conductive rod and the control line plum blossom contacts are correspondingly plugged into each other, and the stop block contacts the inner wall of the switch door, thereby effectively blocking the switch door through the stop block, thereby achieving the effect of locking the switch door of the mine vacuum electromagnetic starter.

[0013] In the open position, the handle is rotated in the opposite direction to separate the conductive rod from the control line contacts. Simultaneously, the stopper disengages from the limit stop on the inner wall of the switch door. This allows the locking rod to be interlocked when the conductive rod is energized. When the locking rod is unlocked, the conductive rod is also de-energized. This synchronized operation of the conductive and locking rods creates a combined interlocking effect. Once the movable contacts on the drawer module are separated from the corresponding incoming and outgoing line contacts, the knob can be rotated back to the vertical position. This, coupled with the rotation of the rotating disk and the transmission rod, drives the respective incoming and control line contact baffles back to their initial positions, shielding them from the respective incoming and control line contacts. This effectively prevents accidental contact between the movable contacts on the drawer module and the incoming and outgoing line contacts due to misoperation, ensuring safe operation. At the same time, the design further improves the reliability and stability of the mine vacuum electromagnetic starter through the mechanical linkage mechanism, ensuring the normal operation of the power system.

[0014] Moreover, the entire mechanism does not require isolation and reversing switch interlocking, and through the linkage operation of the control loop swing-in and swing-out mechanism, the synchronous locking and unlocking effect of the two switch doors can be achieved to ensure operational consistency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for describing the present invention or the prior art.

[0016] Figure 1 A schematic structural diagram of the present invention; Figure 2 A schematic diagram of the structure inside the box of the present invention; Figure 3 A schematic diagram of the structure of the partition plate and the rotating shaft in the present invention; Figure 4 A schematic diagram of the structure of the movable horizontal plate and the incoming contact baffle in the present invention in linkage with the rotating shaft; Figure 5 A schematic diagram of the structure of the control circuit rocking-in and rocking-out mechanism in the present invention; Description of the numbers in the figure: 1. Box body; 2. Drawer module; 3. Partition; 4. Incoming line plum blossom contact; 5. Outgoing line plum blossom contact; 6. Rotating shaft sleeve; 7. Rotating shaft; 8. Knob; 9. Rotating disk; 10. Transmission rod; 11. Moving horizontal plate; 12. Incoming line contact baffle; 13. Strip guide hole; 14. Guide column; 15. Control line contact baffle; 16. Limiting ring; 17. Limiting sleeve; 18. Limiting shaft; 21. Transmission shaft; 22. Handle; 23. Orthogonal nut sleeve; 24. First mounting plate; 25. Connecting sleeve rod; 26. Conductive rod mounting plate; 27. Conductive rod; 28. Control line plum blossom contact; 29. Anti-threaded nut sleeve; 30. Second mounting plate; 31. Stopper; 32. Switch door; 33. Translational quick-opening door mechanism; 35. Support seat; 36. Guide shaft; 161. Limiting protrusion. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention.

[0018] Example 1, as Figure 1-5 As shown, a door opening interlock mechanism of an electric reversing combination switch for mining comprises a housing 1, wherein a plurality of drawer modules 2 are arranged in the housing 1, a partition 3 is fixedly connected to the rear side of the inner cavity of the housing 1, and an incoming line plum blossom contact 4 and an outgoing line plum blossom contact 5 are respectively mounted on the partition 3, and the moving contact of each group of drawer modules 2 cooperates with each group of incoming line plum blossom contacts 4 and outgoing line plum blossom contacts 5; A rotating sleeve 6 is vertically fixedly installed on the front side of the partition 3, and one end of the rotating shaft 7 is rotatably connected to the rotating sleeve 6 through a bearing. The other end of the rotating shaft 7 passes through the front side of the box body 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. The eccentric position of the rotating disk 9 is rotatably connected to one end of the transmission rod 10, and the other end of the transmission rod 10 is rotatably connected to the movable horizontal plate 11 through a rotating shaft. A plurality of incoming contact baffles 12 are vertically fixedly connected below the movable horizontal plate 11, and the incoming contact baffles 12 correspond one-to-one to each group of incoming plum blossom contacts 4 respectively. A plurality of strip guide holes 13 are opened on the surface of the movable horizontal plate 11, and a plurality of guide columns 14 are vertically fixedly installed on the front side of the partition 3. The guide columns 14 correspond one-to-one to the strip guide holes 13, and each guide column 14 is slidably connected to the corresponding strip guide hole 13 respectively.

[0019] The present invention also includes a control circuit rocking-in and rocking-out mechanism, which includes a transmission shaft 21, one end of the transmission shaft 21 passes through the middle of the front side of the box body 1 and is fixedly connected to a handle 22, and the outer surfaces of the transmission shaft 21 are respectively provided with a positive thread segment and a negative thread segment, and the outer surface of the positive thread segment is connected with a positive nut sleeve 23 by a thread, and the positive nut sleeve 23 is fixedly embedded in the first mounting plate 24, and the rear side of the first mounting plate 24 is connected to the conductive rod mounting plate 26 by a connecting sleeve rod 25, and a conductive rod 27 is fixedly embedded in the middle of the conductive rod mounting plate 26, and a control line plum blossom contact 28 is fixedly installed on the partition 3, and the rear end of the conductive rod 27 is movably plugged with the control line plum blossom contact 28; a control line contact baffle 15 is also vertically fixedly connected to the bottom of the movable horizontal plate 11, and the control line contact baffle 15 corresponds to the control line plum blossom contact 28; The outer surface of the reverse threaded section is threadedly connected to a reverse nut sleeve 29, which is fixedly engaged with a second mounting plate 30. Stoppers 31 are fixedly mounted on both ends of the front side of the second mounting plate 30. Two switch doors 32 are symmetrically mounted on the front side of the box body 1. Each switch door 32 is movably connected to the box body 1 using an independent translation-type quick-opening mechanism 33. A limited stopper is fixedly mounted on the inner wall of the switch door 32, and the stopper 31 movably engages with the limited stopper. The translation-type quick-opening mechanism 33 is conventional technology and specifically includes a drive shaft and a handle disposed on the drive shaft, so it will not be described in detail here.

[0020] Working principle: In the initial state, the knob 8 is rotated to a vertical position. At this time, each incoming line contact baffle 12 is correspondingly blocked in front of each group of incoming line plum blossom contacts 4, and the control line contact baffle 15 is correspondingly blocked in front of the control line plum blossom contact 28.

[0021] In the closed state, the switch doors 32 are in the closed state under the action of the translational quick-opening door mechanisms 33 . Then, the knob 8 is rotated 90 degrees counterclockwise. At this time, the knob 8 is used to drive the rotating shaft 7 to rotate, and then the rotating disk 9 on the rotating shaft 7 is driven to rotate. Due to the eccentric position of the rotating disk 9, it is connected to the movable cross plate 11 through the transmission rod 10, and the movable cross plate 11 itself is connected to the strip guide hole 13 through the sliding connection between the guide column 14 and the strip guide hole 13. Therefore, when the rotating disk 9 rotates, the transmission action of the transmission rod 10 can drive the movable cross plate 11 to slide along the guide column 14 in the strip guide hole 13, thereby pushing the various incoming contact baffles 12 and control line contact baffles 15 under the movable cross plate 11 to move away synchronously, so that each group of incoming line plum blossom contacts 4 and control line plum blossom contacts 28 are exposed, and then the chassis mechanism of each drawer module 2 is controlled to push the moving contacts on each drawer module 2 to be inserted into the corresponding incoming line plum blossom contacts 4 and outgoing line plum blossom contacts 5 located on the partition 3. The incoming plum blossom contact 4 is a live part, so when the vacuum AC contactor inside the drawer module 2 is closed, the outgoing plum blossom contact 5 is energized, and when the vacuum AC contactor inside the drawer module 2 is disconnected, the outgoing plum blossom contact 5 is not energized.

[0022] Then, by rotating the handle 22, the transmission shaft 21 is driven to rotate, and then through the threaded connection relationship between the orthogonal nut sleeve 23 and the orthogonal thread section on the outer surface of the transmission shaft 21, and the threaded connection relationship between the anti-thread nut sleeve 29 and the anti-thread section on the outer surface of the transmission shaft 21, based on the principle of thread pair, the orthogonal nut sleeve 23 and the anti-thread nut sleeve 29 can be driven to move synchronously in opposite directions along the axial direction of the transmission shaft 21 through the rotation of the transmission shaft 21, so that the first mounting plate 24 can be driven to move backward through the orthogonal nut sleeve 23, and then the conductive rod mounting plate 26 can be synchronously driven to move toward the control line plum blossom contact 28 through the connecting sleeve rod 25, so that the conductive rod 27 on the conductive rod mounting plate 26 can be plugged into the control line plum blossom contact 28, so that the control circuit is energized to realize the closing action. At the same time, the second mounting plate 30 is synchronously driven to move forward through the counter-threaded nut sleeve 29, and then the stop block 31 on the front side of the second mounting plate 30 is driven to cooperate with the limit stop block on the inner wall of the switch door 32, so that the switch door 32 can be effectively blocked by the stop block 31, thereby achieving the effect of locking the switch door 32 of the mining vacuum electromagnetic starter.

[0023] Similarly, in the open state, the handle 22 is first rotated in the opposite direction to drive the drive shaft 21 in the opposite direction, which then drives the positive nut sleeve 23 and the negative nut sleeve 29 to move synchronously toward each other along the axial direction of the drive shaft 21. The positive nut sleeve 23 then drives the first mounting plate 24 and the conductive rod mounting plate 26 in opposite directions, separating the conductive rod 27 from the control line contact 28, thereby de-energizing the control circuit. Simultaneously, the negative nut sleeve 29 drives the second mounting plate 30 backward, causing the stopper 31 on the front side of the second mounting plate 30 to separate from the limit stop on the inner wall of the switch door 32. The chassis mechanism of the control drawer module 2 is then used to pull the moving contacts on each drawer module 2 apart from the incoming line contact 4 and the outgoing line contact 5. Then rotate the knob 8 to the vertical state. At this time, the rotation of the rotating disk 9 and the transmission action of the transmission rod 10 are used again to drive the movable cross plate 11 to slide in the opposite direction, and then drive each incoming line contact baffle 12 and the control line contact baffle 15 to return to the initial position again to block the front of each group of incoming line plum blossom contacts 4 and control line plum blossom contacts 28. After that, the translational quick-opening door mechanism 33 is used to unlock the switch door 32 so that it can be opened smoothly. The whole process realizes the combined linkage effect of power off and door opening. It effectively ensures that the switch door 32 cannot be opened when it is energized, and can be opened when it is powered off. Then it effectively ensures the safety of operation and prevents accidents caused by misoperation.

[0024] The entire mechanism does not require isolation and reversing switch interlocking, and through the linkage operation of the swing-in and swing-out mechanism of the control loop, the synchronous locking and unlocking effect of the two switch doors 32 can be achieved to ensure operational consistency.

[0025] Embodiment 2, as a further preferred embodiment of embodiment 1, the rotating shaft 7 is rotatably connected to the front side of the box body 1 through a bearing, a limiting ring 16 is fixedly installed on the front side wall of the inner cavity of the box body 1, the limiting ring 16 is coaxially arranged on the outside of the rotating shaft 7, and 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, and a limiting shaft 18 is fixedly installed on the outer surface of the limiting sleeve 17 along the radial direction, and the limiting shaft 18 is in coordinated and movable contact with the limiting protrusion 161.

[0026] By setting a limit ring 16 and making the limit protrusion 161 on the end face of the limit ring 16 cooperate with the limit shaft 18 of the limit sleeve 17, when the control knob 8 is rotated, the limit protrusion 161 can be used to limit the knob 8 to ensure that it can only rotate 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.

[0027] In the third embodiment, as a further preferred embodiment of the first embodiment, both ends of the transmission rod 10 are provided with axial holes, and both ends of the transmission rod 10 are movably connected to the outer surface of the rotating studs through the axial holes. The rotating studs are respectively fixedly connected to the rotating disk 9 and the movable cross plate 11. The rotating connection between the rotating studs and the axial holes effectively ensures the stability and flexibility of the transmission rod 10 during transmission.

[0028] Example 4, as a further preferred embodiment of Example 1, has two support bases 35 fixedly mounted on the front side wall of the inner cavity of the housing 1. The two support bases 35 are located on the left and right sides of the transmission shaft 21, respectively. The rear end surfaces of the support bases 35 are 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 mounted on the partition 3. The guide shaft 36 is arranged parallel to the transmission 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 via shaft sleeves.

[0029] By providing two mutually parallel guide shafts 36, the second mounting plate 30, the first mounting plate 24, and the conductive rod mounting plate 26 are movably connected to the outer surfaces of the guide shafts 36 via shaft sleeves. Therefore, the guiding and supporting function 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, and effectively preventing the second mounting plate 30, the first mounting plate 24, and the conductive rod mounting plate 26 from angular rotation 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.

[0030] In the fifth embodiment, as a further preferred embodiment of the first embodiment, both the positive thread segment and the negative thread segment 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 entry and exit.

[0031] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A door opening interlock mechanism for an electric reversing combination switch for use in a mine, comprising a box (1), wherein a plurality of drawer modules (2) are arranged in the box (1), a partition (3) is fixedly connected to the rear side of the inner cavity of the box (1), and an incoming line plum blossom contact (4) and an outgoing line plum blossom contact (5) are respectively mounted on the partition (3), and the moving contact of each group of drawer modules (2) is respectively matched with each group of incoming line plum blossom contacts (4) and outgoing line plum blossom contacts (5); Its characteristics are: A rotating sleeve (6) is vertically fixedly installed on the front side of the partition (3), and one end of the rotating shaft (7) is rotatably connected to the rotating sleeve (6) through a bearing. The other end of the rotating shaft (7) passes through the front side of the box (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). The eccentric position of the rotating disk (9) is rotatably connected to one end of the transmission rod (10), and the other end of the transmission rod (10) is rotatably connected to the movable horizontal plate (11) through a rotating shaft. A plurality of incoming contact baffles (12) are vertically fixedly connected below the movable horizontal plate (11), and the incoming contact baffles (12) correspond one-to-one to each group of incoming plum blossom contacts (4). A plurality of strip guide holes (13) are opened on the surface of the movable horizontal plate (11), and a plurality of guide columns (14) are vertically fixedly installed on the front side of the partition (3), and the guide columns (14) correspond one-to-one to the strip guide holes (13), and each guide column (14) is slidably connected in the corresponding strip guide hole (13).

2. The door opening interlock mechanism of a mine electric reversing combination switch according to claim 1, characterized in that: The invention also includes a control circuit rocking-in and rocking-out mechanism, wherein the control circuit rocking-in and rocking-out mechanism includes a transmission shaft (21), one end of the transmission shaft (21) passes through the middle of the front side of the box body (1) and is fixedly connected to a handle (22), and the outer surface of the transmission shaft (21) is respectively provided with a positive thread segment and a negative thread segment, and the outer surface of the positive thread segment is connected to a positive nut sleeve (23) through a thread, and the positive nut sleeve (23) is fixedly embedded on the first mounting plate (24), and the rear side of the first mounting plate (24) is fixedly embedded on the first mounting plate (24). The surface is connected to the conductive rod mounting plate (26) through a connecting sleeve rod (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 mounted on the partition (3), and the rear end of the conductive rod (27) is movably connected with the control line plum blossom contact (28); a control line contact baffle (15) is also vertically fixedly connected below the movable horizontal plate (11), and the control line contact baffle (15) corresponds to the control line plum blossom contact (28); The outer surface of the reverse thread segment is connected to a reverse nut sleeve (29) through a thread, and the reverse nut sleeve (29) is fixedly embedded in the second mounting plate (30). A stopper (31) is fixedly installed on the front side of the second mounting plate (30). Two switch doors (32) are symmetrically installed on the front side of the box body (1), and the switch doors (32) are movably connected to the box body (1) using independent translation-type quick-opening door mechanisms (33); a limited stopper is fixedly installed on the inner wall of the switch door (32), and the stopper (31) is in movably contact and cooperate with the limited stopper.

3. The door opening interlock mechanism of a mine electric reversing combination switch according to claim 1, characterized in that: The rotating shaft (7) is rotatably connected to the front side of the box body (1) via a bearing. A limiting ring (16) is fixedly installed on the front side wall of the inner cavity of the box body (1). The limiting ring (16) is coaxially arranged on the outside of 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) in the radial direction. The limiting shaft (18) is in operative contact with the limiting protrusion (161).

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

5. The door opening interlock mechanism of a mine electric reversing combination switch 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 body (1). The two support seats (35) are respectively located on the left and right sides of the transmission shaft (21). The rear end faces of the support seats (35) are respectively 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 (3). The guide shaft (36) is arranged parallel to the transmission shaft (21), and the connecting sleeve rod (25) is movably sleeved on the outer surface of the guide shaft (36).

6. The door opening interlock mechanism of a mine electric reversing combination switch 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) via shaft sleeves.

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

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