Electric walking gate of fan coal mill

Abstract

The utility model discloses an electric walking gate of a fan coal mill, which relates to the auxiliary field of fan coal mills for grinding raw coal in large coal places, and comprises a gate body, driving trundles are respectively arranged at two ends of the gate body, and the driving trundles are driven by a driving motor to rotate. The driving trundles can move on the walking rails, and limiters are installed at the ends of the walking rails. A plurality of driven trundles are arranged between the two driving trundles, and the plurality of driven trundles can move on the walking track. Supports are arranged at the two ends of the bottom of the gate body respectively, and the driving motor, the driving trundles and the driven trundles are installed on the corresponding supports respectively. Audible and visual alarms are arranged at the left end and the right end of the gate body respectively. According to the utility model, manpower and material resources for opening and closing the gate are saved, and the safety in the operation process is improved by adding a sound-light alarm and a limiting device.

Description

Technical Field

[0001] The utility model relates to the technical field of fan coal mill auxiliary equipment for raw coal grinding in large-scale coal-using sites, in particular to an electric walking door for a fan coal mill. Background Art

[0002] The fan mill door allows raw coal and drying media to enter the mill and serves as the gateway for mill maintenance. To ensure adequate clearance for a dedicated vehicle to service the percussion wheel, the door requires ample clearance from the front of the mill casing. Consequently, the door's opening and closing stroke is relatively long. The original fan mill door was a trolley-type, cumbersome structure. Opening and closing the door involved anchor holes in the foundation and a hydraulic trolley or hand chain hoist, making each operation time-consuming and labor-intensive. The fan mill door adopts an electric drive mechanism. The fan mill is affected by the application conditions. The service life of the impact plate in the impact wheel is only 1500-2500 hours. To replace the impact plate, a special maintenance vehicle is needed to remove the entire impact wheel from the mill for maintenance and replacement. In this way, the fan mill door needs to be opened and closed once every 2-3 months. Generally, a 300MW thermal power generating unit is equipped with 6 fan mills, and a 600MW thermal power generating unit is equipped with 8 fan mills. Therefore, when repairing the fan mill, it is particularly important to simplify the operation of opening and closing the door, automate it, and ensure safety.

[0003] Therefore, those skilled in the art provide an electric walking door for a fan coal mill to solve the problems raised in the above background technology. Utility Model Content

[0004] The utility model provides an electric walking door for a fan coal mill which simplifies, standardizes and automates the maintenance of the fan coal mill, saves maintenance manpower and material resources, saves maintenance time and ensures maintenance safety.

[0005] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0006] The utility model provides an electric walking gate for a fan coal mill, comprising a gate body. Active casters are respectively provided at both ends of the gate body. The active casters are driven to rotate by a driving motor. The active casters can move on a walking track, and a limiter is installed at the end of the walking track.

[0007] Furthermore, a plurality of driven casters are provided between the two driving casters, and the plurality of driven casters can move on the walking track.

[0008] Furthermore, brackets are respectively provided at both ends of the bottom of the gate body, and the driving motor, active casters and driven casters are respectively installed on the corresponding brackets.

[0009] Furthermore, sound and light alarms are respectively provided at the left and right ends of the gate body.

[0010] In the above technical solution, the utility model provides an electric walking door for a fan coal mill, which has the following beneficial effects: the fan coal mill door is opened and closed by electric drive, replacing the original manual dragging method through an anchored hydraulic trolley or a hand winch, saving manpower and material resources for opening and closing the door, adding sound and light alarms and limit devices, and improving safety during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0012] Figure 1 The present invention provides a schematic structural diagram of an electric walking door for a fan coal mill according to an embodiment of the present invention.

[0013] Description of reference numerals:

[0014] 1. Gate body; 2. Driven casters; 3. Walking track; 4. Driving casters; 5. Driving motor; 6. Limiter; 7. Sound and light alarm; 8. Bracket. DETAILED DESCRIPTION

[0015] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0016] See also Figure 1 As shown;

[0017] The electric walking gate of a fan coal mill described in an embodiment of the present utility model includes a gate body 1, wherein driving casters 4 are respectively provided at both ends of the gate body 1, and the driving casters 4 are driven to rotate by a driving motor 5. The driving casters 4 can move on a walking track 3, and a limiter 6 is installed at the end of the walking track 3. A plurality of driven casters 2 are provided between two of the driving casters 4, and the plurality of driven casters 2 can move on the walking track 3. Brackets 8 are respectively provided at both ends of the bottom of the gate body 1, and the driving motor 5, the driving casters 4 and the driven casters 2 are respectively installed on the corresponding brackets 8. Sound and light alarms 7 are respectively provided at the left and right ends of the gate body 1.

[0018] During specific operation, the driving motor 5 is installed at the driving shaft of the active caster 4, driving the active caster 4 to rotate, driving the driven caster 2 to walk on the walking track 3, and a limiter 6 is set at the end of the walking track 3. The limiter 6 controls the walking distance of the gate body 1 through a sensor, and the sound and light alarm 7 is installed on the gate body 1. When the driving motor 5 drives the active wheel 4 to drive the gate body 1 to walk on the walking track 3, the sound and light alarm 7 sends an alarm signal to warn the surrounding gate body 1 that the gate body 1 is opening or closing.

[0019] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An electric walking door for a fan coal mill, characterized in that: The invention comprises a gate body (1), wherein active casters (4) are respectively provided at both ends of the gate body, the active casters (4) are driven to rotate by a driving motor (5), the active casters (4) are capable of moving on a walking track (3), and a limiter (6) is installed at the end of the walking track (3).

2. The electric walking door for a fan coal mill according to claim 1, characterized in that: A plurality of driven casters (2) are arranged between the two driving casters (4), and the plurality of driven casters (2) are capable of moving on a walking track (3).

3. The electric walking door of a fan coal mill according to claim 2, characterized in that: Brackets (8) are respectively provided at both ends of the bottom of the gate body (1), and the driving motor (5), the active caster (4) and the driven caster (2) are respectively mounted on the corresponding brackets (8).

4. The electric walking door for a fan coal mill according to claim 1, characterized in that: Sound and light alarms (7) are respectively provided at the left and right ends of the gate body (1).

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