CN218595360U

CN218595360U - Arrangement structure of proximity switch for chain breakage protection of slag conveyor

Info

Publication number: CN218595360U
Application number: CN202222996454.1U
Authority: CN
Inventors: 张江东; 纪凯师; 张晶; 孙嘉伟; 祁宇轩; 王子鸣; 张亚凯; 刘云; 祝遂; 闫是君
Original assignee: Datang Huangdao Power Generation Co ltd
Current assignee: Datang Huangdao Power Generation Co ltd
Priority date: 2022-11-10
Filing date: 2022-11-10
Publication date: 2023-03-10
Anticipated expiration: 2032-11-10

Abstract

The arrangement structure of the proximity switch for chain breakage protection of the slag conveyor comprises a rotating shaft arranged near a down chain, wherein the rotating shaft is used for being installed on a slag conveyor shell, one end of the rotating shaft is provided with a trigger rod, the other end of the rotating shaft is provided with a monitored rod, the trigger rod is located on the inner side of the slag conveyor shell, and the monitored rod is located outside the slag conveyor shell; the monitored rod is used for being detected by the proximity switch, and the trigger rod is used for being touched by a scraper blade of the slag conveyor. The utility model discloses the problem of proximity switch malfunction when lateral shifting appears in the sprocket can be eliminated, the chain breakage protection of messenger's dragveyer is more accurate.

Description

Arrangement structure of proximity switch for chain breakage protection of slag conveyor

Technical Field

The utility model belongs to the technical field of dragveyer chain breakage protection, in particular to dragveyer chain breakage protection is with proximity switch's arrangement structure.

Background

The principle of the dragveyer chain-breaking protection monitoring device is as follows (as shown in figures 5-6): the left side and the right side of a chain wheel at the tail part of the slag conveyor are respectively provided with a proximity switch, the side wall of the chain wheel is provided with a plurality of annular convex strips which are uniformly distributed, and the proximity switches detect the convex strips and send continuous pulse signals to a local control cabinet for detecting the rotation of the chain wheel. However, the left side chain and the right side chain of the slag conveyor in operation are different in abrasion, elongation and deformation degree, so that the tail chain wheel is easy to laterally deviate, the relative distance between the detection convex strip at the same side and the proximity switch is changed, and if the detection distance is exceeded, the chain breakage protection malfunction is caused, and the slag conveyor is tripped. Therefore, the arrangement of the proximity switches needs to be adjusted to avoid that the proximity switches do not detect wrong signals when the sprocket is laterally deviated.

Disclosure of Invention

In view of the technical problem that the background art exists, the utility model provides a proximity switch's arrangement structure for dragveyer chain rupture protection can eliminate the problem of proximity switch malfunction when the sprocket lateral shifting appears, makes dragveyer chain rupture protection more accurate.

In order to solve the technical problem, the utility model discloses following technical scheme has been taken and has been realized:

the arrangement structure of the proximity switch for chain breakage protection of the slag conveyor comprises a rotating shaft arranged near a down chain, wherein the rotating shaft is used for being installed on a slag conveyor shell, one end of the rotating shaft is provided with a trigger rod, the other end of the rotating shaft is provided with a monitored rod, the trigger rod is positioned on the inner side of the slag conveyor shell, and the monitored rod is positioned outside the slag conveyor shell; the monitored rod is used for being detected by the proximity switch, and the trigger rod is used for being touched by a scraper blade of the slag conveyor.

In the preferred scheme, the rotating shaft is positioned above the descending chain, and the weight of the trigger rod is heavier than that of the monitored rod.

In a preferable scheme, the proximity switch is fixed on the shell of the slag remover through a bracket.

In a preferable scheme, the proximity switch is positioned obliquely above the rotating shaft.

This patent can reach following beneficial effect:

the utility model provides a install in the pivot by the monitoring rod, the pivot is passed through the bearing frame and is installed on dragging for the slag shell, as long as drag for the slag shell and do not rock, can not rock by the monitoring rod so, when the trigger bar is touched in the scraper blade operation, the trigger bar rotates and drives to be rotated by the monitoring rod, once by the monitoring rod swing, proximity switch triggers once. The problem of proximity switch malfunction when the sprocket transversely deviates can be eliminated in the above process, so that the chain breakage protection of the slag conveyor is more accurate.

Drawings

The invention will be further explained with reference to the following figures and examples:

FIG. 1 is a working schematic diagram of the present invention;

FIG. 2 is a view of the improved installation position of the proximity switch of the present invention;

FIG. 3 is a first schematic view of the rotation of the monitored rod of the present invention;

FIG. 4 is a second schematic view of the rotation of the monitored rod of the present invention;

FIG. 5 is a schematic diagram of proximity switch detection before modification;

fig. 6 is a view showing the installation position of the proximity switch before modification.

In the figure: the device comprises a rotating shaft 1, a slag conveyor shell 2, a trigger rod 3, a monitored rod 4, a proximity switch 5, a scraper 6, a descending chain 7, a support 8, a bearing seat 9, an improved proximity switch mounting position 10, a traditional proximity switch mounting position 11, a chain wheel 12 and a convex strip 13.

Detailed Description

Before modification, the proximity switch 5 is installed as shown in fig. 5-6, the proximity switch 5 is located on the side of the chain wheel 12, and the chain wheel 12 can be either an up chain wheel or a down chain wheel. The side of the chain wheel 12 is provided with a convex strip 13 which is arranged annularly, and the proximity switch 5 is used for detecting the height and level signals of the convex strip 13 so as to judge whether the chain wheel 12 rotates. The signal detected by the proximity switch is prone to error due to the lateral offset of the sprocket. To the above problem, the utility model discloses an improve as follows:

the preferable scheme is as shown in fig. 1 to 4, the arrangement structure of the proximity switch for chain breakage protection of the slag conveyor comprises a rotating shaft 1 arranged near a downlink chain 7 (the uplink chain is used for displaying, and the uplink chain mainly drives a scraper to remove slag), wherein the rotating shaft 1 is used for being installed on a slag conveyor shell 2, one end of the rotating shaft 1 is provided with a trigger rod 3, the other end of the rotating shaft 1 is provided with a monitored rod 4, the trigger rod 3 is positioned on the inner side of the slag conveyor shell 2, and the monitored rod 4 is positioned outside the slag conveyor shell 2; the monitored lever 4 is used for being detected by a proximity switch 5, and the trigger lever 3 is used for being triggered by a scraper 6 of the slag conveyor. This technical scheme has made the adjustment with the object that proximity switch 5 detected, is about to have changed sand grip 13 into by monitoring pole 4.

The reason why the malfunction of the monitored rod 4 is not easy to occur is that: install on pivot 1 by monitoring pole 4, pivot 1 is installed on dragging for slag shell 2 through bearing frame 9, as long as drag for slag shell 2 and do not rock, so can not rock by monitoring pole 4, when 6 operations of scraper blade touch trigger bar 3, trigger bar 3 rotates and drives by monitoring pole 4 and rotates, once by monitoring pole 4 swing, proximity switch 5 triggers once. In this embodiment, the interval time between the triggering of the monitoring rod 4 is 45s, and when the interval between the two pulse signals exceeds 45s, it is determined that there is an abnormality in the chain, and the chain breakage protection operation is performed.

Further, the rotating shaft 1 is located above the down chain 7, and the weight of the trigger lever 3 is heavier than that of the monitored lever 4. The trigger lever 3 is reset by the monitoring lever 4 by its own weight.

Further, the proximity switch 5 is fixed on the slag remover shell 2 through a bracket 8. Therefore, the positions of the proximity switch 5 and the monitored rod 4 are relatively unchanged, and even if the shell 2 of the slag conveyor shakes, the proximity switch 5 is slightly influenced.

Further, the proximity switch 5 is located obliquely above the rotating shaft 1. This design is designed to avoid a slight rattling motion from occurring when the trigger lever 3 is reset, which causes a malfunction of the proximity switch 5. As shown in fig. 3-4, the proximity switch 5 is installed at the oblique upper side of the rotating shaft 1, so as to avoid the detection signal error caused by the slight shaking of the trigger lever 3.

The above-mentioned embodiments are merely preferred technical solutions of the present invention, and should not be considered as limitations of the present invention, and the protection scope of the present invention should be defined by the technical solutions described in the claims, and equivalents including technical features in the technical solutions described in the claims. I.e., equivalent alterations and modifications within the scope of the invention, are also intended to be covered by the scope of this invention.

Claims

1. The utility model provides a proximity switch's arrangement structure for dragveyer chain rupture protection which characterized in that: the slag salvaging machine is characterized by comprising a rotating shaft (1) arranged near a downlink chain (7), wherein the rotating shaft (1) is used for being installed on a slag salvaging machine shell (2), one end of the rotating shaft (1) is provided with a trigger rod (3), the other end of the rotating shaft (1) is provided with a monitored rod (4), the trigger rod (3) is positioned on the inner side of the slag salvaging machine shell (2), and the monitored rod (4) is positioned outside the slag salvaging machine shell (2); the monitored rod (4) is used for being detected by the proximity switch (5), and the trigger rod (3) is used for being triggered by a scraper (6) of the slag conveyor.

2. The arrangement structure of the proximity switch for chain-breaking protection of the slag conveyor according to claim 1, characterized in that: the rotating shaft (1) is positioned above the descending chain (7), and the weight of the trigger rod (3) is heavier than that of the monitored rod (4).

3. The arrangement structure of the proximity switch for chain-breaking protection of the slag conveyor according to claim 1, is characterized in that: the proximity switch (5) is fixed on the slag conveyor shell (2) through a bracket (8).

4. The arrangement structure of the proximity switch for chain-breaking protection of the slag conveyor according to claim 3, is characterized in that: the proximity switch (5) is positioned above the rotating shaft (1) in an inclined way.