Oscillating bar type coal piling protection device for belt conveyor at upper opening of coal bunker

Abstract

The utility model discloses a coal bunker upper opening belt conveyor swing rod type coal piling protection device which comprises a supporting shaft, a rotary adjusting and stopping mechanism is installed on the supporting shaft, and a coal piling sensing mechanism is arranged on the rotary adjusting and stopping mechanism. Wherein the rotary adjusting and stopping mechanism comprises a rotary carrier roller arranged on the supporting shaft in a sleeving mode, a movable plate is vertically installed on one side of the periphery of the rotary carrier roller, a beating rod is arranged at the bottom of the movable plate, the tail end of the beating rod is connected with a bearing plate, and the bearing plate is located at the highest limiting position of an upper opening coal pile of the coal bunker and rotates along with the movable plate. The device is arranged at the upper opening of the coal bunker. The bearing plate is arranged at the highest limit position of a coal pile at an upper opening of a coal bunker and can rotate under the thrust action of the coal pile when less coal is stacked, and the action of the belt conveyor is controlled through contact and separation of a movable contact and a static contact of the travel switch, so that the coal piling fault response time is greatly shortened; the equipment damage degree and the personnel harm degree caused by coal piling accidents are reduced, the device is low in maintenance cost and sensitive and reliable in action, and the risk of misoperation does not exist.

Description

Technical Field

[0001] The utility model relates to the technical field of coal bunker coal pile protection, in particular to a swing-rod type coal pile protection device for a belt conveyor at an upper opening of a coal bunker. Background Art

[0002] The existing contact type coal pile protection device leads a signal line from the coal pile protector, and the signal line is placed on the top of the coal bunker. The exposed part of the signal line contacts the coal or gangue to form a conductive loop, and the belt conveyor stops. The above method has the following defects:

[0003] 1. The coal or gangue transported by the belt conveyor system has poor conductivity when dry, and the coal pile protection is not easy to operate, resulting in the occurrence of accidents in which the machine head is buried due to full warehouse, and the sensitivity is not high.

[0004] 2. When the belt conveyor system is discharging water, the splashing water will hit the exposed wire ends, causing a short circuit. The coal pile protection will malfunction, causing the belt conveyor to stop under heavy load, and the inclined tunnel belt conveyor may have a flying car accident.

[0005] 3. The coal pile protection line is placed at the top of the coal bunker, which is very unsafe for maintenance personnel to conduct tests every day. Utility Model Content

[0006] In order to solve the technical problems mentioned in the background technology, the utility model provides a swing-rod type coal pile protection device for a belt conveyor at the upper opening of a coal bunker.

[0007] The utility model adopts the following technical scheme: a rocker-type coal pile protection device for a belt conveyor at the upper opening of a coal bunker, comprising a support shaft with two ends horizontally fixedly mounted on the upper edge of the coal bunker; a rotating mediation mechanism is mounted on the support shaft; a coal pile sensing mechanism is arranged on the rotating mediation mechanism; wherein the rotating mediation mechanism comprises a rotating roller sleeved on the support shaft; a movable plate is vertically mounted on one side of the outer circumference of the rotating roller; a hitting rod is arranged at the bottom of the movable plate; the end of the hitting rod is connected to a bearing plate; the bearing plate is located at the highest limit of the coal pile at the upper opening of the coal bunker; the bearing plate rotates with the movable plate; the coal pile sensing mechanism comprises a travel switch moving contact arranged at the top of the movable plate, and a travel switch static contact arranged at the control end of the belt conveyor; when the bearing plate is in a vertical state, the travel switch moving contact is in contact with the travel switch static contact; after the bearing plate is rotated to a certain angle, the travel switch moving contact is separated from the travel switch static contact.

[0008] Furthermore, it also includes a detection rod arranged on one side of the rotating roller; the detection rod and the movable plate are located on the same side; a pull ring is arranged at the end of the detection rod, and a pull rope is connected to the pull ring.

[0009] Furthermore, the coal pile sensing mechanism also includes an alarm action device; the alarm action device is connected to the movable contact of the travel switch.

[0010] Furthermore, the alarm action device includes a controller and a buzzer.

[0011] Compared with the prior art, the utility model has the following advantages: the utility model is designed with a swing-rod type coal pile protection device for the upper belt conveyor of the coal bunker, which is arranged at the upper mouth of the coal bunker, and is easy to install and safe. The bearing plate is arranged at the upper limit of the coal pile at the upper mouth of the coal bunker, and can rotate under the thrust of the coal pile when there is not much coal pile. The action of the belt conveyor is controlled by the contact and separation of the moving contact and the static contact of the travel switch, thereby greatly shortening the reaction time of coal pile failure, reducing the degree of equipment damage and the degree of harm to personnel caused by coal pile accidents, and the device has low maintenance cost, sensitive and reliable action, and no risk of misoperation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The utility model is a schematic diagram of the overall structure of the swing-rod type coal pile protection device of the upper belt conveyor of the coal bunker.

[0013] in:

[0014] 1-support shaft, 2-rotating roller, 3-movable plate, 4-hitting rod, 5-bearing plate, 6-travel switch moving contact, 7-travel switch static contact, 8-detection pull rod, 9-pull ring, 10-pull rope, 11-alarm action device. DETAILED DESCRIPTION

[0015] In order to facilitate those skilled in the art to understand the technical solution of the utility model, further description is now made with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model.

[0016] In the following detailed description, for ease of explanation, many specific details are set forth to provide a comprehensive understanding of the embodiments of the present invention. However, it is apparent that one or more embodiments may be implemented without these specific details. In addition, in the following description, descriptions of known structures and technologies are omitted to avoid unnecessary confusion of the concepts of the present invention.

[0017] like Figure 1The figure is a schematic diagram of the overall structure of the rocker-type coal pile protection device for the upper belt conveyor of the coal bunker of the utility model, including a support shaft 1 with both ends horizontally fixedly installed on the upper edge of the coal bunker, a rotary mediation mechanism installed on the support shaft 1, and a coal pile sensing mechanism arranged on the rotary mediation mechanism. Among them, the rotary mediation mechanism includes a rotating roller 2 sleeved on the support shaft 1, a movable plate 3 is vertically installed on one side of the outer circumference of the rotating roller 2, a hitting rod 4 is arranged at the bottom of the movable plate 3, the end of the hitting rod 4 is connected to the bearing plate 5, and the bearing plate 5 is located at the highest limit of the coal pile at the upper end of the coal bunker, and the bearing plate 5 rotates with the movable plate 3. The coal pile sensing mechanism includes a travel switch moving contact 6 arranged at the top of the movable plate 3, and a travel switch static contact 7 arranged at the control end of the belt conveyor. When the bearing plate 5 is in a vertical state, the travel switch moving contact 6 is in contact with the travel switch static contact 7. After the bearing plate 5 is rotated to a certain angle, which is 5-10° in the specific implementation, as shown in FIG. Figure 1 As shown in the direction of the middle arrow, the movable contact 6 of the travel switch is separated from the static contact 7 of the travel switch.

[0018] Therefore, the utility model designs a rocker-type coal pile protection device for the upper belt conveyor of the coal bunker, which is arranged at the upper mouth of the coal bunker and is easy to install and safe. The bearing plate is arranged at the upper limit of the coal pile at the upper mouth of the coal bunker, and can rotate under the thrust of the coal pile when there is not much coal pile. The action of the belt conveyor is controlled by the contact and separation of the moving contact and the static contact of the travel switch, thereby greatly shortening the reaction time of coal pile failure and reducing the degree of equipment damage and harm to personnel caused by coal pile accidents. The device has low maintenance cost, sensitive and reliable action, and no risk of misoperation.

[0019] Please continue to refer to Figure 1 The coal pile protection device further includes a detection rod 8 arranged on one side of the rotating roller 2. The detection rod 8 and the movable plate 3 are located on the same side. A pull ring 9 is arranged at the end of the detection rod 8, and a pull rope 10 is connected to the pull ring 9. The detection personnel can pull the pull rope 10 at any time to drive the rotating roller 2 to rotate, thereby controlling the travel switch moving contact 6 and the travel switch static contact 7 to separate, so as to detect whether the equipment is sensitive.

[0020] In addition, in the present device, the coal pile sensing mechanism further includes an alarm action device 11, which is connected to the travel switch moving contact 6. In specific implementation, the alarm action device 11 includes a controller and a buzzer. When the travel switch moving contact 6 and the travel switch static contact 7 are separated, the alarm action device 11 sounds an alarm to remind the detection personnel.

[0021] The above embodiments are merely descriptions of the preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A swing-rod type coal pile protection device for a belt conveyor at the top of a coal bunker, characterized in that: The invention comprises a support shaft (1) whose two ends are fixedly mounted horizontally on the upper edge of a coal bunker; a rotating adjustment mechanism is mounted on the support shaft (1); a coal pile sensing mechanism is arranged on the rotating adjustment mechanism; wherein the rotating adjustment mechanism comprises a rotating roller (2) sleeved on the support shaft (1); a movable plate (3) is vertically mounted on one side of the outer circumference of the rotating roller (2); a driving rod (4) is arranged at the bottom of the movable plate (3); the end of the driving rod (4) is connected to a bearing plate (5); the bearing plate (5) is located at the upper coal bunker opening The upper limit position of the coal pile; the bearing plate (5) rotates with the movable plate (3); the coal pile sensing mechanism comprises a travel switch moving contact (6) arranged at the top of the movable plate (3), and a travel switch static contact (7) arranged at the control end of the belt conveyor; when the bearing plate (5) is in a vertical state, the travel switch moving contact (6) is in contact with the travel switch static contact (7); after the bearing plate (5) rotates to a certain angle, the travel switch moving contact (6) is separated from the travel switch static contact (7).

2. The swing arm type coal pile protection device for the upper belt conveyor of the coal bunker according to claim 1 is characterized in that: It also includes a detection rod (8) arranged on one side of the rotating roller (2); the detection rod (8) and the movable plate (3) are located on the same side; a pull ring (9) is arranged at the end of the detection rod (8), and a pull rope (10) is connected to the pull ring (9).

3. The swing-rod type coal pile protection device for the upper belt conveyor of the coal bunker according to claim 2 is characterized in that: The coal pile sensing mechanism further comprises an alarm action device (11); the alarm action device (11) is connected to the movable contact (6) of the travel switch.

4. The swing-rod type coal pile protection device for the upper belt conveyor of the coal bunker according to claim 3 is characterized in that: The alarm action device (11) comprises a controller and a buzzer.

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