Double-motor control system for air door of main ventilator on ground of coal mine

Abstract

The utility model relates to the technical field of air door equipment, in particular to an air door double-motor control system of a main ventilator on the ground of a coal mine, an air door is connected with a rack, the rack is in meshed transmission with two sets of motor control mechanisms with the same structure, and when one set of motor control mechanism operates, a power transmission mechanism of the other set of motor control mechanism can be disconnected. Movement of the air door does not affect a motor of the other motor control mechanism. Aiming at potential safety hazards existing in an air door electric device of a main ventilator on the ground of a coal mine, an existing air door driving system is improved, a motor adopts a mode that one motor is used and the other motor is standby, and a mechanism capable of being freely switched is designed. When one motor breaks down, the air door can still be controlled on site or remotely through the other motor. Therefore, potential safety accidents are effectively prevented, and safe production of a coal mine is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of air door equipment, in particular to a double-motor control system for air doors of a main ventilation fan on the ground of a coal mine. Background Art

[0002] At present, the dampers of the main ventilation fans on the ground of coal mines are all driven by valve electric devices. The valve electric device has electric switching action, and the dampers can be controlled on-site or remotely and centrally. However, the valve electric device is only equipped with one motor. When the motor fails or fails, it can only rely on the hand wheel, which is cumbersome, time-consuming and laborious to operate. When an emergency occurs, it cannot meet the requirements of rapid opening and closing, and there is a greater risk of safety accidents.

[0003] To this end, the present application designs a dual-motor control system for the dampers of the main ventilation fans on the ground of coal mines to solve the above-mentioned problems. Utility Model Content

[0004] In order to make up for the deficiencies in the prior art, the utility model provides a dual-motor control system for air doors of a main ventilation fan on the ground of a coal mine.

[0005] A dual-motor control system for the damper of a main ventilation fan on the ground of a coal mine, comprising a damper, characterized in that:

[0006] The damper is connected to a rack, which meshes and transmits two sets of motor control mechanisms of the same structure. When one set of motor control mechanisms is in operation, the power transmission mechanism of the other set of motor control mechanisms can be disconnected, so that the movement of the damper will not affect the motor of the other set of motor control mechanisms.

[0007] Furthermore, in order to better realize the utility model, the motor control mechanism includes a motor, which is connected to a driving shaft through a first coupling, and a spline sleeve that can move axially is provided on the driving shaft, and one end of the spline sleeve is detachably connected to a driven shaft, and the driven shaft is connected to a gear shaft through a second coupling, and the gear at the end of the gear shaft meshes with a rack.

[0008] Furthermore, in order to better realize the utility model, the driving shaft is rotatably connected to the vertical support plate, one end of the driving shaft is circumferentially provided with vertical teeth, and the inside of the spline sleeve is also provided with corresponding teeth, and a cylindrical compression spring is sleeved on the driving shaft, one end of the cylindrical compression spring abuts against the support plate, and the other end abuts against the spline sleeve.

[0009] Furthermore, in order to better implement the utility model, a ruler is provided on the outer ring of one end of the spline sleeve, a concave-convex groove is provided on the other end of the spline sleeve, and a corresponding concave-convex groove is also provided on one end of the driven shaft.

[0010] Furthermore, in order to better realize the utility model, a gear handle with a meshing ruler is provided under the spline sleeve, and the gear handle drives the spline sleeve to disengage from or engage with the driven shaft. A magnetic ball is provided at the handle end of the gear handle, and the magnetic ball can be attracted by the magnetic base.

[0011] Furthermore, in order to better implement the utility model, the driven shaft is rotatably mounted on the support seat, and one side of the support seat is against the end of the spline sleeve of the driven shaft to prevent the driven shaft from sliding in the axial direction.

[0012] The beneficial effects of the utility model are:

[0013] Aiming at the potential safety hazards of the damper electric device of the main ventilation fan on the ground of the coal mine, the utility model improves the existing damper drive system, adopts the form of one motor for use and one for backup, and designs a mechanism that can be switched freely. When one of the motors fails, the damper can still be controlled on-site or remotely through the other motor. Thereby effectively preventing potential safety accidents and ensuring the safe production of coal mines. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0015] Figure 2 It is an exploded view of the three-dimensional structure of the utility model;

[0016] Figure 3 It is a structural schematic diagram of the driving shaft of the utility model;

[0017] Figure 4 It is a structural schematic diagram of the spline sleeve of the utility model;

[0018] Figure 5 This is a schematic diagram of the structure of the gear handle of the utility model;

[0019] Figure 6 It is a structural schematic diagram of the driven shaft of the utility model.

[0020] In the figure,

[0021] 1. Motor, 2. First coupling, 3. Driving shaft, 4. Support plate, 5. Cylindrical compression spring, 6. Spline sleeve, 7. Gear handle, 8. Magnetic base, 9. Driven shaft, 10. Support seat, 11. Second coupling, 12. Gear shaft, 13. Rack, 14. Air damper. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the utility model provided in the accompanying drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents selected embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0024] Figure 1-Figure 6 This is a specific embodiment of the utility model, which is a dual-motor control system for the damper of the main ventilation fan on the ground of a coal mine. As shown in the figure, the motor 1 is connected to the driving shaft 3 of the switching mechanism through the first coupling 2. The spline on one side of the driving shaft 3 drives the spline sleeve 6 to rotate axially synchronously, and can also slide longitudinally. The support plate 4 can be used to support the driving shaft 3, and can also fix one end of the cylindrical compression spring 5. The other end of the cylindrical compression spring 5 is fixed to one end of the spline sleeve 6. One end of the gear handle 7 is a gear, which drives the spline sleeve 6 to slide longitudinally along the driving shaft 3 by meshing with the outer ruler of the spline sleeve 6, and will not affect the rotation of the spline sleeve 6; the other end of the gear handle 7 is a handle magnetic ball, which can be fixed on the magnetic suction base 8. The end of the spline sleeve 6 has a concave-convex groove that can cooperate with the cylinder with a concave-convex groove at one end of the driven shaft 9 to drive the driven shaft 9 to rotate. The cylinder with a concave-convex groove at one end of the driven shaft 9 is hollow inside, has no contact with the driving shaft 3 and has a certain gap. The support seat 10 is used to support the driven shaft 9. The shaft on one side of the gear shaft 12 is connected to the driven shaft 9 through the second coupling 11, and the gear on the other side of the gear shaft 12 is meshed with the rack 13 to push the damper 14 to open and close.

[0025] During normal operation, the rack 13 will move. To prevent the non-working motor from being affected, the control mechanism where it is located must be turned off, and the magnetic ball of the gear handle 7 is pressed down and placed on the magnetic base 8. Although the cylindrical compression spring 5 is compressed, the spring force is not enough to lift the magnetic ball of the gear handle 7. As the gear handle 7 rotates, the spline sleeve 6 slides axially and separates from the cylinder of the driven shaft 9. The opening and closing of the damper 14 and the rotation of the gear shaft 12 will not affect the motor.

[0026] At this time, another control mechanism is started, and the gear handle 7 is manually lifted. At this time, the gear at one end of the gear handle 7 rotates to drive the spline sleeve 6 to move axially along the driving shaft 3. Under the action of the cylindrical compression spring 5, the spline sleeve 6 can accurately match the cylinder of the driven shaft 9, and the spline sleeve 6 is not easy to slide in the opposite direction. Turn on the motor 1, the driving shaft 3 drives the spline sleeve 6 to rotate, the spline sleeve 6 drives the driven shaft 9 and the gear shaft 12 to rotate, and the rotation of the gear shaft 12 drives the translation of the rack 13, and the damper 14 is opened and closed by the belt.

[0027] During operation, the rotation of the spline sleeve 6 will not drive the gear on the gear handle 7 to rotate, and the support seat 10 can not only support the driven shaft 9, but also prevent the driven shaft 9 from axial sliding.

[0028] When one of the motors fails or is under maintenance, the other motor can be switched by manually controlling the rise and fall of the magnetic ball of the gear handle 7 to control the opening and closing of the damper on site or remotely.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the utility model by ordinary technicians in this field should be included in the scope of the claims of the utility model as long as they do not depart from the spirit and scope of the technical solution of the utility model.

Claims

1. A dual-motor control system for a main ventilation fan damper on the ground of a coal mine, comprising a damper (14), characterized in that: The damper (14) is connected to the rack (13), and the rack (13) meshes and transmits two sets of motor control mechanisms of the same structure. When one set of motor control mechanisms is in operation, the power transmission mechanism of the other set of motor control mechanisms can be disconnected, so that the movement of the damper (14) will not affect the motor of the other set of motor control mechanisms.

2. The dual-motor control system for the damper of the main ventilation fan on the ground of a coal mine according to claim 1 is characterized by: The motor control mechanism comprises a motor (1), the motor (1) being connected to a driving shaft (3) through a first coupling (2), the driving shaft (3) being sleeved with a spline sleeve (6) movable in the axial direction, one end of the spline sleeve (6) being detachably connected to a driven shaft (9), the driven shaft (9) being connected to a gear shaft (12) through a second coupling (11), and a gear at the end of the gear shaft (12) being meshed with a rack (13).

3. The dual-motor control system for the damper of the main ventilation fan on the ground of a coal mine according to claim 2 is characterized by: The driving shaft (3) is rotatably connected to the vertical support plate (4); one end of the driving shaft (3) is provided with a vertical toothing, and the interior of the spline sleeve (6) is also provided with a corresponding toothing; a cylindrical compression spring (5) is sleeved on the driving shaft (3); one end of the cylindrical compression spring (5) abuts against the support plate (4), and the other end abuts against the spline sleeve (6).

4. The dual-motor control system for the damper of the main ventilation fan on the ground of a coal mine according to claim 3 is characterized by: The outer ring of one end of the spline sleeve (6) is provided with a ruler, the other end of the spline sleeve (6) has a concave-convex groove, and a corresponding concave-convex groove is also provided at one end of the driven shaft (9).

5. The dual-motor control system for the damper of the main ventilation fan on the ground of a coal mine according to claim 4 is characterized in that: A gear handle (7) engaging with a ruler is provided below the spline sleeve (6), and the gear handle (7) drives the spline sleeve (6) to disengage from or engage with the driven shaft (9). A magnetic ball is provided at the handle end of the gear handle (7), and the magnetic ball can be attracted by a magnetic base (8).

6. The dual-motor control system for the damper of the main ventilation fan on the ground of a coal mine according to claim 2 is characterized by: The driven shaft (9) is rotatably mounted on the support seat (10), and one side of the support seat (10) is in contact with the end of the engaging spline sleeve (6) of the driven shaft (9), thereby preventing the driven shaft (9) from sliding in the axial direction.

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