Mining electric rack balance air door

Abstract

A mining electric rack balance air door comprises an air door body and a door frame, a power mechanism is arranged on the door frame, and the power mechanism is connected with a driving gear; the driving gear is meshed with a rack, and one end of the rack is hinged to one end of a crank arm; the crank arm is fixedly connected with one air door, the other end of the crank arm is hinged to a synchronous connecting rod, and the other end of the synchronous connecting rod is hinged to the other air door. A rack limiting push wheel is arranged on the back face of the rack, and a clutch mechanism is arranged on the rear portion of the rack limiting push wheel. The air door synchronous driving device solves the problem that in the prior art, air door synchronous driving equipment is tedious in installation and high in damage rate, and consequently the air door synchronous rate is reduced, the device is not prone to deformation, the high synchronous rate of the air door can be kept all the time, the device is simple in structure, convenient to assemble and easy to maintain, and particularly the clutch mechanism is convenient to disassemble. And the rack limiting push wheel and the driving gear can be quickly controlled to be separated and combined under special conditions.

Description

Technical Field

[0001] The utility model relates to the field of underground air doors, in particular to an electric rack-balanced air door for mining. Background Art

[0002] Underground dampers play a vital role in mine safety production. The setting of dampers has the functions of supplying sufficient fresh air underground, diluting toxic gases underground, and remotely and intelligently controlling the underground air volume and direction, thus realizing the standardization of intelligent digital ventilation in mines. Due to the high wind pressure underground, the remote control opening and closing of dampers must follow a certain process, otherwise safety accidents are likely to occur. The opening and closing of double-leaf dampers in the existing technology are usually pneumatic or hydraulic single-power control dampers. The biggest disadvantage of this setting form is that the design is complex and the installation is cumbersome. In addition, due to the many twists and turns in underground tunnels, the situation is complicated, the wind pressure in some areas is uncertain, etc., which can easily cause commuting accidents.

[0003] In response to the above problems, the applicant previously submitted application number 2021217030118, disclosing a screw-type synchronous damper for mining, and application number 2022226235323, disclosing a mining pull-type synchronous damper and other patent applications. However, during long-term field application, it was found that the dampers required high maintenance frequency and high maintenance costs. In particular, for some products, the clutch mechanism between the drive equipment and the synchronous opening and closing mechanism is not set reasonably in the absence of power, resulting in difficulty in opening and closing the damper in emergency situations. In response to the above problems, there is currently a lack of corresponding solutions. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the existing technology and provide a mining electric rack balanced damper with a simple structure, a damper balanced synchronous opening and closing mechanism that is not easy to deform and easy to maintain, and the ability to quickly control the clutch of the power mechanism and the synchronous opening and closing mechanism in the absence of power, which is safe to use.

[0005] The device includes a damper and a door frame. The damper here is a double-leaf damper comprising two door panels. A door frame is provided outside the damper, and the damper is hingedly provided on the door frame.

[0006] A power mechanism is provided on the door frame, and the power mechanism is connected to a driving gear;

[0007] The driving gear is engaged with the rack, and one end of the rack is hingedly arranged at one end of the crank arm;

[0008] The crank arm is fixedly connected to a damper, and the other end of the crank arm is hingedly provided with a synchronous balancing link, and the other end of the synchronous balancing link is hingedly connected to another damper;

[0009] A rack limiting push wheel is arranged on the back of the rack, and a clutch mechanism is arranged at the rear of the rack limiting push wheel.

[0010] The effect achieved in this way is that the power mechanism drives the driving gear to rotate, and the driving gear drives the rack to displace. Since the rack is hinged on the crank arm and its back side is tightly fitted into the rack limit push wheel, the rack's displacement stroke is to move to one side while rotating around the rack limit push wheel, thereby opening the air door on one side, and the air door on the other side is opened and closed synchronously due to the action of the synchronous balance link.

[0011] The beneficial effects of the utility model are as follows: the utility model solves the problem in the prior art that the damper synchronous drive device is cumbersome to install and has a high damage rate, which leads to a reduced damper synchronization rate. The device itself is not easily deformed and can always maintain a high damper synchronization rate. The device has a simple structure, is easy to assemble, and is easy to maintain. In particular, its clutch mechanism is easy to disassemble, and in special circumstances it can quickly control the rack limit push wheel to be clutched with the drive gear, so that it can be pushed open by manpower, thereby improving the safety of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a structural diagram of a mine-used electric rack-balanced damper described in the utility model;

[0013] Figure 2 is based on Figure 1 The partial enlarged view of the direction is also a schematic diagram of the implementation principle and structure of the rack limit push wheel clutch mechanism;

[0014] Reference numerals:

[0015] 1- Door frame 2- Air door 3- Rack 4- Drive gear 5- Rack limit push wheel 51- Push wheel frame 52- Movable rod 6- Reducer 7- Motor 8- Clutch mechanism 9- Synchronous connecting rod 10- Crank arm 11- Assembly set 12- Screw

[0016] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0017] Reference Figure 1 、 Figure 2 The utility model discloses a rack synchronous balanced damper and a synchronous opening and closing mechanism, comprising a damper 2 and a door frame 1. The damper 2 mentioned here is a double-leaf damper 2 comprising two door panels. A door frame 1 is provided outside the damper 2, and the damper 2 is hingedly provided on the door frame 1.

[0018] A power mechanism is provided on the door frame 1, and the power mechanism is connected to the driving gear 4;

[0019] The driving gear 4 is engaged with the rack 3, and one end of the rack 3 is hingedly arranged at one end of the crank arm 10;

[0020] The crank arm 10 is fixedly connected to one damper 2, and the other end of the crank arm 10 is hingedly provided with a synchronous connecting rod 9, and the other end of the synchronous connecting rod 9 is hingedly connected to the other damper 2;

[0021] A rack limiting push wheel 5 is provided on the back of the rack 3 , and a clutch mechanism 8 is provided at the rear of the rack limiting push wheel 5 .

[0022] The effect achieved in this way is that the power mechanism drives the driving gear 4 to rotate, and the driving gear 4 drives the rack 3 to displace. Since the rack 3 is hinged on the crank arm 10 and its back is tightly fitted into the rack limiting push wheel 5, the displacement stroke of the rack 3 is to move to one side while rotating around the rack limiting push wheel 5, thereby opening the air door 2 on one side, and the air door 2 on the other side is opened and closed synchronously due to the action of the synchronization link 9.

[0023] Furthermore, the power mechanism includes a motor 7 , the motor 7 is connected to a reducer 6 , and the reducer 6 is connected to a driving gear 4 .

[0024] The effect achieved thereby is that the opening and closing stroke of the damper 2 is more stable.

[0025] Furthermore, the crank arm 10 is in a split configuration, and the two sections of the crank arm 10 are fixedly arranged on the two sides of the damper 2 through angle connectors.

[0026] The effect achieved thereby is to optimize the mechanical structure and make assembly more convenient and reasonable.

[0027] Furthermore, the clutch mechanism is arranged in the following manner:

[0028] The rack limiting push wheel 5 is provided with a push wheel frame 51, and a movable rod 52 is integrally connected to the rear of the push wheel frame 51;

[0029] The movable rod 52 is inserted into the assembly set 11, and the assembly set 11 is inserted into the door frame 1;

[0030] A limit plate is provided at the tail of the assembly sleeve 11 , and a screw rod 12 is passed through the limit plate.

[0031] The effect achieved in this way is that the screw 12 is loosened, the rack limit push wheel 5 moves backward, and is released from the fitting limit on the rack 3. In this case, the damper 2 is not subject to the mechanical self-locking constraint of the power equipment, and the damper 2 can be pushed open by manpower in the event of a power outage or other circumstances.

[0032] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from all perspectives, the embodiments should be regarded as illustrative and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that come within the meaning and range of equivalents of the claims be included in the present invention. Any reference signs in the claims should not be construed as limiting the claims.

[0033] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A mine-use electric rack-balanced damper, comprising a damper and a door frame, wherein the damper is a double-leaf damper comprising two door panels, and a power mechanism is provided on the door frame, characterized in that: The power mechanism is connected to the drive gear; The driving gear is engaged with the rack, and one end of the rack is hingedly arranged at one end of the crank arm; The crank arm is fixedly connected to a damper, and the other end of the crank arm is hingedly provided with a synchronous connecting rod, and the other end of the synchronous connecting rod is hingedly connected to another damper; A rack limiting push wheel is arranged on the back of the rack, and a clutch mechanism is arranged at the rear of the rack limiting push wheel.

2. The electric rack balanced damper for mining according to claim 1, characterized in that: The power mechanism includes a motor, the power of the motor is connected to a reducer, and the power of the reducer is connected to a driving gear.

3. The electric rack balanced damper for mining according to claim 1, characterized in that: The crank arm is in a split arrangement, and the two sections of the crank arm are fixedly arranged on the two sides of the damper through angle code connectors.

4. The electric rack balanced damper for mining according to claim 1, characterized in that: The clutch mechanism is arranged in the following manner: The rack-limiting push wheel is provided with a push wheel frame, and a movable rod is integrally connected to the rear of the push wheel frame; The movable rod is passed through the assembling set, and the assembling set is passed through the door frame.

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