Flame-proof and intrinsically safe dual-power vacuum electromagnetic starter for coal mine fan

Abstract

The utility model relates to the technical field of starters, in particular to an explosion-proof and intrinsically safe dual-power vacuum electromagnetic starter for a coal mine fan, which comprises a bottom bracket, two cavities are fixedly connected onto the bottom bracket, a programmable controller is arranged in each cavity, a master switch is fixedly connected at a position close to the top end in each cavity, and a power supply is arranged in each master switch. A binding post is fixedly connected to the main switch, a placement groove is formed in the side, close to the inner wall of the cavity, of the main switch, a sliding groove is formed in the position, close to the main switch, of the cavity, a moving mechanism is rotationally connected into the sliding groove, and the portion, located on the outer side of the cavity, of the moving mechanism is connected with a rotating mechanism which can drive the moving mechanism to move. Fault information is collected and processed through the programmable controller, the display screen displays the fault information, fault judgment, debugging and maintenance are facilitated, the arranged rotating mechanism is matched with the moving mechanism to cut off power of the main switch when the cavity is opened, electric shock of workers is avoided, and personal safety of the workers is protected.

Description

Technical Field

[0001] The utility model relates to the technical field of starters, in particular to a flameproof and intrinsically safe dual-power vacuum electromagnetic starter for a coal mine fan. Background Art

[0002] At present, the frequency conversion technology used for local ventilation fans in underground coal mines in my country has been widely used in major coal mines with the promotion of smart mines. In the existing technology, there are many starter control specifications and technical states, which leads to the inability to produce or stock products in advance, and errors are prone to occur in factory inspections. Faults cannot be recorded during on-site operation, and staff are required to go to the site for investigation. In addition, when a fault occurs, sometimes the staff does not cut off the power to the starter first, which can easily cause electric shock and threaten the personal safety of the staff. Utility Model Content

[0003] In view of this, the purpose of the utility model is to provide a flameproof and intrinsically safe dual-power vacuum electromagnetic starter for coal mine fans to solve the above-mentioned problems.

[0004] Based on the above purpose, the utility model provides a flameproof and intrinsically safe dual-power supply vacuum electromagnetic starter for a coal mine fan, comprising a bottom bracket, two cavities are fixedly connected to the bottom bracket, each of the cavities is provided with a programmable controller, a display screen is fixedly connected to a position above the programmable controller in the cavity, a power supply is fixedly connected to one side of the programmable controller, a temperature sensor is fixedly connected to the side of the power supply, a main switch is fixedly connected to a position near the top of the cavity, a terminal is fixedly connected to the main switch, a placement groove is provided on one side of the main switch near the inner wall of the cavity, a sliding groove is provided at a position of the cavity near the main switch, a moving mechanism is rotatably connected in the sliding groove, a rotating mechanism is connected to the outside of the cavity, and the rotating mechanism can drive the moving mechanism to move.

[0005] Optionally, the moving mechanism includes a threaded rod rotatably connected to a sliding groove, a sliding block is threadedly connected to the threaded rod, a connecting block is fixedly connected to the sliding block, an end of the connecting block close to the main switch is fixedly connected to the moving block, a conductive column is fixedly connected to the moving block, the conductive column is connected to a terminal on the main switch, and the first gear is fixedly connected to one end of the threaded rod outside the sliding groove.

[0006] Optionally, the rotating mechanism includes an operating handle rotatably connected to a side of the cavity close to the first gear, the operating handle is fixedly connected to the second gear, the second gear is provided with a bayonet, the operating handle is provided with a mounting slot, a block is slidably connected to a position in the mounting slot close to the bayonet, one end of the block located in the mounting slot is hingedly connected to a connecting rod, an end of the connecting rod away from the block is hingedly connected to a moving rod, an end of the moving rod away from the connecting rod is hingedly connected to a rotating rod, an end of the rotating rod away from the moving rod is fixedly connected to a pressing block, the rotating rod and the operating handle are rotatably connected via a rotating shaft, the operating handle is provided with a notch, the cavity is fixedly connected to a fixing seat close to the operating handle, a locking rod is slidably connected to the fixing seat, and the other end of the locking rod is engaged with the notch.

[0007] Optionally, the second gear is meshed with the first gear.

[0008] Optionally, one end of the locking rod is slidably connected to the operating handle.

[0009] Optionally, one side of the moving block is arranged in a slope, the placement groove is arranged in an inclined manner, and the height of the conductive pillars on the moving block is arranged in a decreasing manner.

[0010] Optionally, the main switch, power supply, temperature sensor, programmable controller and display screen are electrically connected.

[0011] Optionally, the temperature sensor detects the temperature of the fan and the cavity and transmits it to the programmable controller.

[0012] The beneficial effects of the utility model are as follows: when a fault occurs, the programmable controller collects and processes the fault information, and the display screen displays the fault information, which is convenient for staff to make fault judgments, facilitate debugging and maintenance, and the rotating mechanism cooperates with the moving mechanism to cut off the power of the main switch when the cavity is opened, avoiding electric shock to staff and protecting the personal safety of staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a front view of a flameproof and intrinsically safe dual-power vacuum electromagnetic starter for a coal mine fan according to an embodiment of the utility model;

[0015] Figure 2This is a schematic diagram of the structure of a flameproof and intrinsically safe dual-power vacuum electromagnetic starter for a coal mine fan according to an embodiment of the utility model;

[0016] Figure 3 A side view of the main switch and the moving block of the embodiment of the utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the main switch and the moving block of an embodiment of the utility model;

[0018] Figure 5 It is a front view of the rotating mechanism of the embodiment of the utility model;

[0019] Figure 6 for Figure 5 Sectional view at AA in the middle;

[0020] Figure 7 A partial schematic diagram of a rotating mechanism of an embodiment of the utility model;

[0021] Figure 8 for Figure 7 The enlarged view of point B in the middle;

[0022] Fig. 9 It is a structural schematic diagram of the moving mechanism of an embodiment of the utility model.

[0023] The markings in the figure are:

[0024] 1. Bottom bracket; 2. Cavity; 3. Programmable controller; 4. Display screen; 5. Power supply; 6. Temperature sensor; 7. Main switch; 8. Terminal; 9. Placement slot; 10. Sliding slot; 11. Threaded rod; 12. Sliding block; 13. Connecting block; 14. Moving block; 15. Conductive column; 16. First gear; 17. Operating handle; 18. Second gear; 19. Bayonet; 20. Installation slot; 21. Block; 22. Connecting rod; 23. Moving rod; 24. Rotating rod; 25. Pressing block; 26. Notch; 27. Fixed seat; 28. Locking rod. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0026] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0027] like Figures 1 to 9 As shown, a flameproof and intrinsically safe dual-power vacuum electromagnetic starter for a coal mine fan comprises a bottom bracket 1, two cavities 2 are fixedly connected to the bottom bracket 1, a programmable controller 3 is arranged in each of the cavities 2, a display screen 4 is fixedly connected to a position above the programmable controller 3 in the cavity 2, a power supply 5 is fixedly connected to one side of the programmable controller 3, a temperature sensor 6 is fixedly connected to the side of the power supply 5, a main switch 7 is fixedly connected to a position near the top in the cavity 2, a terminal 8 is fixedly connected to the main switch 7, a placement groove 9 is provided on a side of the main switch 7 close to the inner wall of the cavity 2, a sliding groove 10 is provided in the position of the cavity 2 close to the main switch 7, a moving mechanism is rotatably connected in the sliding groove 10, the moving mechanism is connected to a rotating mechanism located outside the cavity 2, and the rotating mechanism can drive the moving mechanism to move.

[0028] When a fault occurs, the programmable controller 3 collects and processes the fault information, and the display screen 4 displays the fault information, which is convenient for the staff to make fault judgment, debug and repair. The rotating mechanism cooperates with the moving mechanism to cut off the power of the main switch 7 when the cavity 2 is opened, avoiding electric shock to the staff and protecting the personal safety of the staff.

[0029] At the same time, the display screen 4 can display system data, IO status, comprehensive security data, frequency conversion data, sensor data, and event records.

[0030] In one embodiment, Fig. 9As shown, the moving mechanism includes a threaded rod 11 rotatably connected to a sliding groove 10, a sliding block 12 is threadedly connected to the threaded rod 11, a connecting block 13 is fixedly connected to the sliding block 12, a moving block 14 is fixedly connected to one end of the connecting block 13 close to the main switch 7, a conductive column 15 is fixedly connected to the moving block 14, the conductive column 15 is connected to the terminal 8 on the main switch 7, and a first gear 16 is fixedly connected to one end of the threaded rod 11 located outside the sliding groove 10.

[0031] In one embodiment, Figures 5 to 8 As shown, the rotating mechanism includes a manipulation handle 17 rotatably connected to a side of the cavity 2 close to the first gear 16, the manipulation handle 17 is fixedly connected to a second gear 18, the second gear 18 is provided with a bayonet 19, the manipulation handle 17 is provided with a mounting groove 20, a block 21 is slidably connected to a position near the bayonet 19 in the mounting groove 20, one end of the block 21 located in the mounting groove 20 is hinged to a connecting rod 22, the end of the connecting rod 22 away from the block 21 is hinged to a moving rod 23, the end of the moving rod 23 away from the connecting rod 22 is hinged to a rotating rod 24, the end of the rotating rod 24 away from the moving rod 23 is fixedly connected to a pressing block 25, the rotating rod 24 and the manipulation handle 17 are rotationally connected via a rotating shaft, the manipulation handle 17 is provided with a notch 26, a fixing seat 27 is fixedly connected to a position of the cavity 2 close to the manipulation handle 17, a locking rod 28 is slidably connected to the fixing seat 27, and the other end of the locking rod 28 is locked with a locking block on the door cover.

[0032] In one embodiment, Figure 2 As shown, the second gear 18 is meshed with the first gear 16 .

[0033] In one embodiment, one end of the locking rod 28 is slidably connected to the operating handle 17 .

[0034] When the operating handle 17 is rotated, the operating handle 17 drives the second gear 18 to rotate, the rotation drives the first gear 16 to rotate, the rotation of the first gear 16 drives the threaded rod 11 to rotate, the rotation of the threaded rod 11 drives the sliding block 12 to move, the movement of the sliding block 12 drives the connecting block 13 to move, the movement of the connecting block 13 drives the moving block 14 to move, the movement of the moving block 14 drives the conductive column 15 away from the conductive column 15 of the main switch 7, so that the main power supply 5 is disconnected, avoiding the electric shock of the staff and protecting the personal safety of the staff. When the operating handle 17 is rotated, the operating handle 17 The locking rod 28 is driven to move, and when the locking rod 28 moves, it is disengaged from the locking block on the door cover, so that the door can be opened for maintenance. When the starter is normal and the door is opened, the pressing block 25 is pressed, and the pressing block 25 moves to drive the rotating rod 24 to rotate, and the rotating rod 24 rotates to drive the moving rod 23 to move, and the moving rod 23 moves to drive the connecting rod 22 to move, and the connecting rod 22 moves to drive the block 21 to move, and the block 21 is disengaged from the bayonet 19 on the second gear 18. Therefore, when the operating handle 17 is rotated, the second gear 18 does not drive the first gear 16 to rotate, and the main switch 7 power supply 5 will not be disconnected.

[0035] In one embodiment, Figure 3 and Figure 4 As shown, one side of the moving block 14 is arranged with an inclined surface, the placement groove 9 is arranged at an angle, and the height of the conductive column 15 on the moving block 14 is arranged to decrease. When the moving block 14 moves, the terminal 8 located at the rear will not contact the conductive column 15, ensuring that the main switch 7 is in a disconnected state, further ensuring that the staff will not be electrically shocked, and at the same time ensuring that the terminal 8 and the conductive column 15 will not be contacted and disconnected multiple times during movement, and there will be no misconnection between the live wire, the neutral wire and the ground wire, thereby protecting the electrical appliances in the cavity 2 from damage.

[0036] In one embodiment, the main switch 7 , the power supply 5 , the temperature sensor 6 , the programmable controller 3 and the display screen 4 are electrically connected.

[0037] In one embodiment, Figure 1 As shown, the temperature sensor 6 detects the temperature inside the fan and the cavity 2, and is used to detect temperature detection. The programmable controller 3 performs corresponding processing, can monitor the fan bearing temperature, and issue an over-temperature alarm. The temperature sensor 6 range, measurement deviation, and alarm value are adjustable; it can monitor the horizontal vibration and vertical vibration of the fan, and issue a vibration alarm. The vibration sensor range, measurement deviation, and alarm value are adjustable to remind the staff to handle and ensure that the temperature is within the appropriate temperature.

[0038] The operation logic of the device is to start, the relay is energized, the contactor is activated, and then the delayed frequency converter starts to run at a given frequency. The device starts and stops. First, the frequency converter stops, and then the contactor is disconnected with a delay, and the device stops. The delay circuit in the device can realize the adjustable time delay for opening and closing of gas and wind power interlocks. The programmable controller 3 set can realize the manual opening and closing of the power-off protection function.

[0039] The power supplies 5 and programmable controller 3 in two cavities 2 are arranged on the bottom bracket 1 of the device, so that the starter has multiple working functions, including main-standby machine action switching function, main-standby equivalence, main-standby rotation, host priority, main-standby independence, host manual start, etc.; action monitoring function, which can monitor the contactor's suction action, inverter operation status, and standby machine operation status; the device realizes manual and automatic speed regulation functions through the programmable controller 3 and the built-in inverter. Manual speed regulation can be local and remote. Automatic speed regulation is based on the selected speed regulation mode according to sensor data, automatic gas speed regulation, air volume speed regulation, gas and air volume comprehensive speed regulation, gas and air volume wind speed and temperature comprehensive speed regulation, gas and wind speed and temperature comprehensive speed regulation; it has inverter communication function, comprehensive protection communication function, touch screen communication function, sensor communication function, and supports upper The machine can communicate with the equipment through Ethernet according to the S7TCP / MODBUSTCP / OPC protocol, and the sensor communication port can be configured as a modbusrtu slave station to communicate with the outside world when not in use; the set programmable controller 3 can record the corresponding information, then the device has the information collection and recording functions such as fault information, alarm information, operation action information, reversing information, switch use information, switch feature information, switching machine status information, historical data query, etc.; it can perform system parameter setting, comprehensive protection parameter setting, frequency conversion parameter setting, sensor parameter setting, test parameter setting, manufacturer parameter setting, locking parameter setting, power-off holding function parameter setting, speed regulation parameter setting, IP parameter setting, 485 parameter modification, sensor communication data setting, password setting and other functions.

[0040] The device can set IP parameters without the need to modify the program on site; it integrates data from three existing inverter manufacturers (INVT, Hope Senlan, and Dehexin), and can select the corresponding inverter through settings without modifying the program; it has set several hardware configuration modes, which can be modified through settings without modifying the program; it has set a variety of switch action modes to meet most customer requirements without the need for personnel to modify the program; it has set a variety of speed regulation modes to meet a variety of speed regulation requirements without the need for personnel to modify the program; it has set a variety of wind power and gas locking modes to meet different customer requirements without the need to modify the program.

[0041] A person skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention is limited to these examples; under the concept of the present invention, the technical features in the above embodiments or different embodiments may also be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity. Any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A flameproof and intrinsically safe dual-power vacuum electromagnetic starter for a coal mine fan, comprising a bottom bracket (1), characterized in that: Two cavities (2) are fixedly connected to the bottom bracket (1), each of the cavities (2) is provided with a programmable controller (3), a display screen (4) is fixedly connected to a position above the programmable controller (3) in the cavity (2), a power supply (5) is fixedly connected to one side of the programmable controller (3), a temperature sensor (6) is fixedly connected to the side of the power supply (5), a main switch (7) is fixedly connected to a position near the top of the cavity (2), a terminal (8) is fixedly connected to the main switch (7), a placement groove (9) is provided on one side of the main switch (7) near the inner wall of the cavity (2), a sliding groove (10) is provided in the cavity (2) near the main switch (7), a moving mechanism is rotatably connected in the sliding groove (10), a rotating mechanism is connected to the outside of the cavity (2), and the rotating mechanism can drive the moving mechanism to move.

2. The flameproof and intrinsically safe dual-power vacuum electromagnetic starter for coal mine fans according to claim 1 is characterized in that: The moving mechanism comprises a threaded rod (11) rotatably connected to a sliding groove (10); a sliding block (12) is threadedly connected to the threaded rod (11); a connecting block (13) is fixedly connected to the sliding block (12); a moving block (14) is fixedly connected to one end of the connecting block (13) close to the main switch (7); a conductive column (15) is fixedly connected to the moving block (14); the conductive column (15) is connected to a terminal (8) on the main switch (7); and a first gear (16) is fixedly connected to one end of the threaded rod (11) located outside the sliding groove (10).

3. The flameproof and intrinsically safe dual-power vacuum electromagnetic starter for coal mine fans according to claim 1 is characterized in that: The rotating mechanism comprises an operating handle (17) rotatably connected to a side of the cavity (2) close to the first gear (16); the operating handle (17) is fixedly connected to a second gear (18); the second gear (18) is provided with a bayonet (19); the operating handle (17) is provided with a mounting groove (20); a block (21) is slidably connected to a position in the mounting groove (20) close to the bayonet (19); one end of the block (21) located in the mounting groove (20) is hingedly connected to a connecting rod (22); and the end of the connecting rod (22) away from the block (21) is hingedly connected to a moving rod (21). 3), one end of the moving rod (23) away from the connecting rod (22) is hinged with a rotating rod (24), one end of the rotating rod (24) away from the moving rod (23) is fixedly connected with a pressing block (25), the rotating rod (24) and the operating handle (17) are rotatably connected via a rotating shaft, the operating handle (17) is provided with a notch (26), the cavity (2) is fixedly connected with a fixing seat (27) at a position close to the operating handle (17), the fixing seat (27) is slidably connected with a locking rod (28), and the other end of the locking rod (28) is engaged with the notch (26).

4. The flameproof and intrinsically safe dual-power vacuum electromagnetic starter for coal mine fans according to claim 3 is characterized in that: The second gear (18) is meshed with the first gear (16).

5. The flameproof and intrinsically safe dual-power vacuum electromagnetic starter for coal mine fans according to claim 3 is characterized in that: One end of the locking rod (28) is slidably connected to the operating handle (17).

6. The flameproof and intrinsically safe dual-power vacuum electromagnetic starter for coal mine fans according to claim 2 is characterized in that: One side of the moving block (14) is arranged in an inclined surface, the placement groove (9) is arranged in an inclined manner, and the height of the conductive pillars (15) on the moving block (14) is arranged in a decreasing manner.

7. The flameproof and intrinsically safe dual-power vacuum electromagnetic starter for coal mine fans according to claim 1 is characterized in that: The main switch (7), the power supply (5), the temperature sensor (6), the programmable controller (3) and the display screen (4) are electrically connected.

8. The flameproof and intrinsically safe dual-power vacuum electromagnetic starter for coal mine fans according to claim 1 is characterized in that: The temperature sensor (6) detects the temperature in the fan and the cavity (2) and transmits the temperature to the programmable controller (3).

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