Dual-drive system for air door of main ventilator on ground of coal mine

Abstract

The utility model relates to the technical field of air door driving, in particular to an air door dual-driving system of a main ventilator on the ground of a coal mine, which is characterized in that an original fan valve electric device is arranged on a bracket and is in control connection with an air door, and a gripper driven to rotate by a motor is also arranged on the bracket; the paw is in separable transmission connection with a hand wheel of an original fan valve electric device through the paw telescopic mechanism. The device has the advantages that potential safety hazards existing in an air door electric device of a main ventilator on the ground of a coal mine at present can be reduced, under the condition that a motor of a valve electric device fails, the air door can still be opened and closed quickly and effectively through the auxiliary motor, and therefore potential safety accidents are effectively prevented, and the service life of the air door electric device is prolonged. And safe production of coal mines is guaranteed. Meanwhile, the system does not affect manual operation of an original valve electric device, and opening and closing of the air door can still be controlled by rotating the hand wheel.

Description

Technical Field

[0001] The utility model relates to the technical field of air door driving, in particular to an air door double driving system 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 generally driven by valve electric devices. This device has the function of electric switching, and has the ability to set the protection torque and display the damper status, so that the damper can be controlled on-site or remotely and centrally. However, the electric valve device is only equipped with one motor. When the motor fails or fails, it needs to be operated manually. Turning the handwheel of the electric valve device is time-consuming and laborious. It is difficult to quickly open and close the damper in an emergency, and there is a risk of safety accidents.

[0003] To this end, the present application designs a dual drive system for the dampers of the main ventilation fans on the ground of coal mines to solve the above-mentioned problems. Summary of the invention

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

[0005] A dual-drive system for main ventilation fan dampers on the ground of a coal mine, comprising an original fan valve electric device, characterized in that:

[0006] The original fan valve electric device is installed on the bracket, and the original fan valve electric device controls the connected air door. The bracket is also provided with a claw driven to rotate by a motor, and the claw is detachably connected to the hand wheel of the original fan valve electric device through a claw telescopic mechanism.

[0007] Furthermore, in order to better realize the utility model, a plurality of grooves are opened at one end of the gripper, and the torque is transmitted by connecting with the handwheel of the original fan valve electric device through the grooves. A keyway is provided on the rotating shaft at the other end of the gripper, and the key is connected to the output shaft of the reducer, and the gripper can move axially.

[0008] Furthermore, in order to better implement the present invention, the reducer is transmission-connected with a clutch, and the clutch is transmission-connected with the motor.

[0009] Furthermore, in order to better realize the utility model, the clutch is a magnetic powder clutch, an electromagnetic clutch, or a block-throwing clutch.

[0010] Furthermore, in order to better realize the utility model, one end of the hand claw retractable mechanism is fixed on the bracket, and the other end is connected to the rotating shaft of the hand claw. The rotating shaft of the hand claw is designed with a shoulder and a nut to prevent axial relative movement between the hand claw and the hand claw retractable mechanism. At the same time, the connection between the hand claw retractable mechanism and the hand claw is a clearance fit, so that the hand claw can rotate relative to the hand claw retractable mechanism.

[0011] Furthermore, in order to better realize the utility model, the driving form of the hand claw extension mechanism adopts a hydraulic drive mechanism, a pneumatic drive mechanism, an electric drive mechanism, a ball screw mechanism, or a piston cylinder.

[0012] Furthermore, in order to better implement the utility model, the manual-automatic switching handle of the fan valve electric device is connected to one end of the manual-automatic switching handle driving mechanism, and the other end of the manual-automatic switching handle driving mechanism is fixed on the bracket.

[0013] Furthermore, in order to better realize the present invention, the driving form of the manual-automatic switching handle driving mechanism adopts a hydraulic driving mechanism, a pneumatic driving mechanism, an electric driving mechanism, a connecting rod mechanism, a ball screw mechanism, or a piston cylinder.

[0014] The beneficial effects of the utility model are:

[0015] The device of the utility model can reduce the safety hazards existing in the current main ventilation fan damper electric device of the coal mine. In the case of valve electric device motor failure, the damper can still be opened and closed quickly and effectively by relying on the auxiliary motor, thereby effectively preventing potential safety accidents and ensuring the safe production of the coal mine. At the same time, the system does not affect the manual operation of the original valve electric device, and the damper can still be opened and closed by turning the hand wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of a three-dimensional structure of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the hand claw extension mechanism of the utility model;

[0018] Figure 3 This is a structural schematic diagram of the manual-automatic switching handle driving mechanism of the utility model;

[0019] Figure 4 It is an exploded view of the three-dimensional structure of the utility model;

[0020] Figure 5 This is the second schematic diagram of the three-dimensional structure of the utility model;

[0021] Figure 6 It is a three-dimensional structural schematic diagram of the utility model in a disengaged state of the hand claw.

[0022] In the figure,

[0023] 1. Original fan valve electric device, 2. Hand claw, 3. Reducer, 4. Clutch, 5. Motor, 6. Hand claw retractable mechanism, 7. Bracket, 8. Manual-automatic switching handle driving mechanism. DETAILED DESCRIPTION

[0024] 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.

[0025] 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.

[0026] Figure 1-Figure 6 This is a specific embodiment of the utility model, which is a dual-drive system for the main ventilation fan damper on the ground of a coal mine. A groove is designed at the end of the hand claw 2, which is connected to the hand wheel of the original fan valve electric device 1 through the groove and transmits torque. A keyway is designed on the rotating shaft of the hand claw 2, which is connected to the output shaft of the reducer 3 through a key and a coupling, and the hand claw 2 can move axially relative to the coupling.

[0027] The output shaft of the reducer 3 is connected to the hand claw 2 through a coupling and transmits torque. One side of the clutch 4 is connected to the reducer 3 through a coupling, and the other side is connected to the motor 5 through a coupling. When the clutch 4 is in action and the hand claw 2 is not separated from the hand wheel of the original fan valve electric device 1, the torque output by the motor 5 can be transmitted to the hand wheel of the original fan valve electric device 1; when the clutch 4 is not in action, the torque output by the motor 5 cannot be transmitted to the hand wheel of the original fan valve electric device 1. The clutch 4 adopts various clutch forms such as magnetic powder clutch, electromagnetic clutch, and block clutch.

[0028] The motor 5 is connected to the clutch 4 through a coupling. When the clutch 4 is actuated and the claw 2 is not separated from the handwheel of the original fan valve electric device 1, the torque output by the motor 5 can be transmitted to the handwheel 1 of the original fan valve electric device, driving the handwheel to rotate, and then driving the damper to open and close.

[0029] One end of the gripper retractable mechanism 6 is fixed on the bracket 7, and the other end is connected to the rotating shaft of the gripper 2. The rotating shaft of the gripper 2 is designed with a shoulder and a nut to prevent the gripper 2 and the gripper retractable mechanism 6 from axially moving relative to each other. At the same time, the connection between the gripper retractable mechanism 6 and the gripper 2 is a clearance fit, so that the gripper 2 can rotate relative to the gripper retractable mechanism 6. The gripper retractable mechanism 6 can adopt various drive forms such as hydraulic drive mechanism, pneumatic drive mechanism, electric drive mechanism, etc., and can adopt various mechanical structures such as ball screw mechanism and piston cylinder. When the gripper retractable mechanism 6 contracts, it drives the gripper 2 to separate from the handle of the original fan valve electric device 1; when the gripper retractable mechanism 6 extends, it drives the gripper 2 to connect with the handle of the original fan valve electric device 1.

[0030] One end of the manual-automatic switching handle driving mechanism 8 is connected to the manual-automatic switching handle of the original fan valve electric device 1, and the other end is fixed on the bracket 7. The manual-automatic switching handle driving mechanism 8 can adopt various driving forms such as hydraulic driving mechanism, pneumatic driving mechanism, electric driving mechanism, etc., and can adopt various mechanical structures such as connecting rod mechanism, ball screw mechanism and piston cylinder. When the manual-automatic switching handle driving mechanism 8 is retracted, it drives the manual-automatic switching handle of the original fan valve electric device 1 to rotate, and the original fan valve electric device 1 is switched from automatic mode to manual mode.

[0031] The specific usage of this embodiment is as follows:

[0032] When the original fan valve electric device 1 works normally, the air door is opened and closed by the original fan valve electric device 1. At this time, the clutch 4 is not actuated, the motor 5 is disconnected from the original fan valve electric device 1, and the motor 5 cannot transmit torque to the original fan valve electric device 1.

[0033] When the motor in the original fan valve electric device 1 fails or fails, the manual-automatic switching handle driving mechanism 8 is controlled to shrink, driving the manual-automatic switching handle of the original fan valve electric device 1 to rotate, and the original fan valve electric device 1 is switched from automatic mode to manual mode. Then the clutch 4 is actuated, so that the motor 5 can transmit the torque to the handwheel of the original fan valve electric device 1 through the reducer 3, driving it to rotate, and then driving the damper to open and close.

[0034] When the motor and motor 5 in the original fan valve electric device 1 malfunction or fail, the clutch 4 does not work, the motor 5 is disconnected from the original fan valve electric device 1, and the motor 5 cannot transmit torque to the original fan valve electric device 1. At this time, the handwheel of the original fan valve electric device 1 can be manually turned to drive the damper to open and close.

[0035] When the original fan valve electric device 1 needs to be repaired, the claw extension mechanism 6 can be controlled to retract, so that the claw 2 is separated from the handle of the original fan valve electric device 1, leaving space for repair and replacement of the original fan valve electric device 1.

[0036] 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-drive system for main ventilation fan dampers on the ground of a coal mine, comprising an original fan valve electric device (1), characterized in that: The original fan valve electric device (1) is mounted on a bracket (7), and the original fan valve electric device (1) controls the connected damper. The bracket (7) is also provided with a hand claw (2) driven to rotate by a motor (5), and the hand claw (2) is detachably connected to the hand wheel of the original fan valve electric device (1) through a hand claw retractable mechanism (6).

2. The dual-drive system for main ventilation fans on the ground of coal mines according to claim 1 is characterized in that: One end of the hand claw (2) is provided with a plurality of grooves, and is connected to the hand wheel of the original fan valve electric device (1) through the grooves to transmit torque. A keyway is provided on the rotating shaft at the other end of the hand claw (2), and the key is connected to the output shaft of the reducer (3), and the hand claw (2) can move axially.

3. The dual drive system for the main ventilation fan of the coal mine surface according to claim 2 is characterized in that: The reducer (3) is drivingly connected to a clutch (4), and the clutch (4) is drivingly connected to a motor (5).

4. The dual-drive system for main ventilation fans on the ground of coal mines according to claim 3 is characterized in that: The clutch (4) is a magnetic powder clutch, an electromagnetic clutch, or a block-throwing clutch.

5. The dual-drive system for main ventilation fans on the ground of coal mines according to claim 1 is characterized in that: One end of the gripper telescopic mechanism (6) is fixed to the bracket (7), and the other end is connected to the rotating shaft of the gripper (2). The rotating shaft of the gripper (2) is provided with a shoulder and a nut for preventing the gripper (2) and the gripper telescopic mechanism (6) from axially moving relative to each other. At the same time, the gripper telescopic mechanism (6) and the gripper (2) are connected at a clearance fit, so that the gripper (2) can rotate relative to the gripper telescopic mechanism (6).

6. The dual-drive system for the main ventilation fan of the coal mine surface according to claim 5 is characterized in that: The driving form of the gripper retractable mechanism (6) is a hydraulic driving mechanism, a pneumatic driving mechanism, an electric driving mechanism, a ball screw mechanism, or a piston cylinder.

7. The dual-drive system for main ventilation fans on the ground of coal mines according to claim 1 is characterized by: The manual-automatic switching handle of the fan valve electric device (1) is connected to one end of a manual-automatic switching handle driving mechanism (8), and the other end of the manual-automatic switching handle driving mechanism (8) is fixed on the bracket (7).

8. The dual-drive system for the main ventilation fan of the coal mine surface according to claim 7 is characterized in that: The manual-automatic switching handle driving mechanism (8) is driven in the form of a hydraulic driving mechanism, a pneumatic driving mechanism, an electric driving mechanism, a connecting rod mechanism, a ball screw mechanism, or a piston cylinder.

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