CN203428471U

CN203428471U - Novel belt anti-deviation switch

Info

Publication number: CN203428471U
Application number: CN201320351871.9U
Authority: CN
Inventors: 杨新宇; 鲁伟; 王晓龙
Original assignee: 杨新宇
Priority date: 2013-06-19
Filing date: 2013-06-19
Publication date: 2014-02-12
Anticipated expiration: 2023-06-19

Abstract

A novel belt anti-deviation switch relates to the technical field of auxiliary devices of belt conveyers, and comprises a vertical roller (1), a transmission handle (3), a housing (4) and an alarm trigger device, wherein the alarm trigger device is installed in the housing, and comprises a switching device (5) and a trigger cam, the switching device comprises a first-stage alarm contact (6) and a second-stage alarm contact (7), which respectively correspond to a first-stage trigger cam (6) and a second-stage trigger cam (7) of the trigger cams, the vertical roller and the trigger cams are assembled on the same rotary shaft through the transmission handle, and a torsion spring is assembled between the rotary shaft and the housing. The novel belt anti-deviation switch is characterized in that a hook (2) is arranged on the transmission handle and cooperates with a projection (10) outside the housing, and an arc chute (11) is arranged on the rear section of a trigger point (12) of each trigger cam and corresponds to the corresponding alarm contact. The novel belt anti-deviation switch is convenient and flexible, reduces failure rate and improves production efficiency.

Description

Novel belt deviation preventing switch

Technical Field

The utility model relates to a belt conveyor auxiliary assembly technical field especially belongs to a novel belt prevent off tracking switch.

Background

At present, a traditional two-stage action deviation switch is widely applied to belt conveyor systems in the industries of mines, metallurgy, ports and the like, is equipment for detecting the deviation of a conveying belt of a belt conveyor, and plays a safety protection role in automatic alarming and stopping under the condition that the conveying belt deviates. In the running process of the belt conveyor, due to the influence of factors such as large-strand material flow and slipping in rainy days, the instantaneous deviation and local deviation of the belt often occur on the conveying belt, so that the deviation switch acts, and the belt conveyor stops. The normal operation of the belt conveyor cannot be influenced by the instantaneous deviation and the local deviation of a part of the belt, and the conventional deviation switch can cause the frequent halt of the belt conveyor. In addition, in the state, the conveying belt rubs with the deviation switch upright post for a long time, so that the deviation switch is damaged. Therefore, the maintenance workload of belt conveyor maintenance personnel is increased, the maintenance cost is increased, and the completion efficiency of ship unloading and loading operation tasks is seriously influenced.

Disclosure of Invention

An object of the utility model is to provide a novel belt prevents off tracking switch promptly to reach the purpose that effectively improves the operating efficiency, reduces off tracking switching loss, realizes the economic benefits maximize.

The utility model provides a novel belt deviation preventing switch, including edger roll, transmission handle, casing, warning trigger device install in the casing, have switching device and trigger cam, switching device have first-level warning contact and second grade warning contact, first-level warning contact, second grade warning contact correspond respectively to trigger cam and the second grade trigger cam in the cam, the edger roll passes through the transmission handle and assembles in the same pivot with above-mentioned trigger cam, assembles the torsional spring between the casing in the pivot; it is characterized in that the transmission handle is provided with a hook which is matched with a bulge on the outer side of the shell; the rear section of the trigger point of the trigger cam is provided with an arc-shaped groove corresponding to the alarm contact.

The utility model discloses a novel belt deviation prevention switch, under specific conditions, can place the edger roll and force the district and fix through the couple at so-called action signal, during this state, foretell warning contact is in the arc wall that triggers the cam just, so can not produce command signal, the band conveyer shut down phenomenon that the significantly reduced caused because of accidental off tracking to have positive meaning in equipment inspection and trial run process, reached convenient nimble, reduce the fault rate, improve production efficiency's positive effect.

Drawings

The accompanying drawings further disclose embodiments of the present invention. Wherein,

FIG. 1: the front view of the utility model;

FIG. 2: a primary alarm state diagram;

FIG. 3: a secondary alarm state diagram;

FIG. 4: schematic diagram of the action signal forcing zone state.

Detailed Description

As shown in fig. 1, the utility model provides a novel off tracking switch is prevented to belt, including edger roll 1, transmission handle 3, casing 4 to and the couple 2 that is equipped with on the transmission handle and the arch 10 in the casing outside. One end of the hook 2 is arranged on the shell through a pin shaft, and the other end of the hook is matched with the bulge 10 and can be clamped without loosening.

As shown in fig. 2-4, the alarm triggering device installed in the casing has a switching device 5 and a triggering cam, the switching device has a first-stage alarm contact 6 and a second-stage alarm contact 7, and the first-stage alarm contact 6 and the second-stage alarm contact 7 respectively correspond to a first-stage triggering cam 8 and a second-stage triggering cam 9 in the triggering cam. The vertical roller is assembled on the same rotating shaft with the trigger cam through the transmission handle, and a torsion spring is assembled between the rotating shaft and the shell in order to realize automatic reset after the vertical roller acts. The above features are substantially the same as those of the prior art and will not be described in detail.

As shown in fig. 4, the present invention is characterized in that, in the triggering rotation direction of the triggering cam, the rear section of the triggering point 12 is provided with an arc-shaped groove 11. When the vertical roller is locked in the action signal forcing zone, the arc-shaped groove just corresponds to the alarm contact.

The utility model discloses when the normal use position is the edger roll 0 degree to the right side inclination, one-level warning contact and second grade warning contact all have no action. As shown in fig. 2, when the belt is slightly deviated to cause the vertical roll to incline to the right by 20 degrees, the first-level alarm contact acts to give out sound or light alarm prompt; as shown in figure 3, when the deviation of the belt is increased, so that the right inclination angle of the vertical roller reaches 45 degrees, the secondary alarm contact acts to send out a warning and automatically realize the immediate stop. However, in order to prevent the unexpected deviation from causing unnecessary halt, as shown in fig. 4, the vertical roller can be manually inclined to the right by 70-75 degrees, namely, the vertical roller is a forced area, all contacts do not act, the phenomenon that the belt conveyor is frequently and unnecessarily halted can be reduced, and the ship unloading or loading operation efficiency is greatly improved.

Claims

1. A novel belt deviation preventing switch comprises a vertical roller (1), a transmission handle (3), a shell (4) and an alarm trigger device, wherein the alarm trigger device is installed in the shell and is provided with a switch device (5) and a trigger cam, the switch device is provided with a primary alarm contact (6) and a secondary alarm contact (7), the primary alarm contact (6) and the secondary alarm contact (7) respectively correspond to a primary trigger cam (8) and a secondary trigger cam (9) in the trigger cam, the vertical roller and the trigger cam are assembled on the same rotating shaft through the transmission handle, and a torsion spring is assembled between the rotating shaft and the shell; it is characterized in that the transmission handle is provided with a hook (2) which is matched with a bulge (10) on the outer side of the shell; the rear section of the trigger point (12) of the trigger cam is provided with an arc-shaped groove (11) corresponding to the alarm contact.