CN209741063U - Improved interlocking protection device for coke dry quenching hoister - Google Patents

Abstract

The utility model discloses a modified is used for chain protection device of dry coke quenching lifting machine, the lower part leading truck on the lifting machine derrick is including first lower part leading truck and the second lower part leading truck that is located the relative both sides of lifting machine derrick respectively, and wherein, chain protection device includes: the lifting hook comprises a first lifting hook limit switch arranged at a lifting hook opening position on a first lower guide frame and a second lifting hook limit switch arranged at a lifting hook opening position on a second lower guide frame, wherein the two lifting hook limit switches are positioned at the same height on a lifting machine derrick, and the first lifting hook limit switch and the second lifting hook limit switch are used for detecting whether the lifting hook is positioned at the opening position or not and feeding back a detection result to a control system. The utility model discloses can be under the unusual circumstances such as weighing sensor fracture appears, wire rope is disconnected rope, burnt jar clamp burnt, the accurate situation of opening of discerning both sides lifting hook feeds back to the control system of lifting machine in time, makes lifting machine automatic stop to avoid the electric locomotive to scrape and bump the lifting hook.

Description

Improved interlocking protection device for coke dry quenching hoister

Technical Field

The utility model relates to a dry coke quenching electrical technology field especially relates to a chain protection device that modified is used for dry coke quenching lifting machine.

Background

In the coke dry quenching production operation process of a coke plant, a coke dry quenching hoister system is an important link of the whole coke dry quenching. The hoister operates on a derrick of the hoister and a track on the top of the dry quenching furnace, the coke tank filled with the red coke is lifted to a certain height and transversely moved to the top of the dry quenching furnace, the red coke is loaded into the dry quenching furnace by matching with the loading device, and the empty coke tank is lifted, moved and lowered back to a standby position after the red coke is loaded.

the dry quenching hoister is a full-automatic unmanned operation device, and is operated by program setting, through various detection points and field limiting signal feedback, and only in a fault state, manual operation is implemented. The lifting hook of the lifting machine is only limited in the opening state, so that in the operation process, if the lifting machine has the problems of single-side weighing sensor breakage, wire rope breakage, coke clamping of a coke tank and the like, the balance beam can be out of balance, the lifting appliances on two sides fall out of synchronization, and the single-side lifting hook is not opened in place. But the lifting hook is opened for spacing and still shows normally at this moment, so the lifting machine and the electric locomotive continue to operate, the electric locomotive and the lifting hook of the lifting machine are easy to cause scraping accidents, and the normal production is greatly influenced.

Therefore, there is a need in the art for an improved interlock protection device for a dry quenching elevator, which can automatically stop the elevator in the event of abnormal conditions such as weighing sensor breakage, rope breakage of a steel wire rope, coke clamping of a coke tank, etc., so as to avoid the accident of the lifting hook being scraped by an electric locomotive.

SUMMERY OF THE UTILITY MODEL

To the technical problem that exists among the above-mentioned prior art, the utility model provides a modified is used for chain protection device of dry coke quenching lifting machine, it can appear weighing sensor fracture, wire rope absolutely, under the burnt abnormal conditions such as jar clamp coke, the condition of opening of discernment both sides lifting hook is accurately judged to the lifting machine, in time feeds back to lifting machine control system, makes lifting machine automatic stop to avoid the electric locomotive to scrape and bump the lifting hook.

to this end, the utility model discloses a modified is used for chain protection device of dry coke quenching lifting machine, wherein, the lifting machine is installed on the lifting machine derrick to go up and down by control system control, be provided with upper portion leading truck and the lower part leading truck that is used for guiding the lifting machine to go up and down on the lifting machine derrick and install the lifting hook on the leading truck of lower part, wherein, the lower part leading truck is including first lower part leading truck and the second lower part leading truck that is located the relative both sides of lifting machine derrick respectively, wherein, the lifting hook has the open position that makes the lifting machine roll up and open completely, wherein, chain protection device includes: the lifting hook comprises a first lifting hook limit switch and a second lifting hook limit switch, wherein the first lifting hook limit switch is arranged at the opening position of a lifting hook on the first lower guide frame, the second lifting hook limit switch is arranged at the opening position of a lifting hook on the second lower guide frame, the first lifting hook limit switch and the second lifting hook limit switch are located at the same height position on a lifting machine derrick, and the first lifting hook limit switch and the second lifting hook limit switch are used for detecting whether the lifting hook is located at the opening position or not and feeding back a detection result to a control system.

Further, a protective cover may be installed around the first hook limit switch on the first lower guide frame and the second hook limit switch on the second lower guide frame.

According to the utility model discloses the improved chain protection device for dry coke quenching lifting machine that embodiment provided can obtain following beneficial effect, promptly the utility model discloses can appear weighing sensor fracture, wire rope is disconnected rope, burnt jar clamp burnt etc. abnormal conditions under, the condition of opening of discerning both sides lifting hook is accurately judged to the lifting machine, in time feeds back to the control system of lifting machine, makes the lifting machine automatic stop to avoid the electric locomotive to scrape and bump the lifting hook.

Drawings

The accompanying drawings, which are described herein, serve to provide a further understanding of the embodiments of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are illustrative of the invention and do not constitute an undue limitation on the invention. In the drawings:

Fig. 1 schematically illustrates a dry quenching elevator to which an improved interlock protection device for a dry quenching elevator according to an embodiment of the present invention is applied; and

Fig. 2 schematically illustrates a lower guide of an improved interlock protection device for a dry quenching elevator according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the following will combine the embodiments of the present invention and the corresponding drawings to clearly and completely describe the technical solutions of the present invention. It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention.

The technical solution provided by the embodiments of the present invention is described in detail below with reference to the accompanying drawings.

Referring to fig. 1 and 2, there is provided an improved interlock protection device for a dry quenching elevator, in which an elevator 1 is mounted on an elevator mast to be controlled to ascend and descend by a control system, upper and lower guide frames 2 and 3 for guiding the elevator to ascend and descend, and a hook mounted on the lower guide frame are provided on the elevator mast, wherein the lower guide frame 3 includes first and second lower guide frames 31 and 32 respectively located at opposite sides of the elevator mast, wherein the hook has an open position in which an elevator roll is completely opened, wherein,

The interlock protection device includes: a first hook limit switch 4 arranged at the opening position of the hook on the first lower guide frame 31 and a second hook limit switch 5 arranged at the opening position of the hook on the second lower guide frame 32, wherein the first hook limit switch 4 and the second hook limit switch 5 are positioned at the same height on the hoisting derrick, and the first hook limit switch 4 and the second hook limit switch 5 are used for detecting whether the hook is at the opening position or not and feeding back the detection result to the control system.

In one embodiment, the lift program of the lift machine may be preset.

according to the above procedure, in operation, the feedback signals of the two hook open position signals detected by the first hook limit switch 4 on the first lower guide frame 31 and the second hook limit switch 5 on the second lower guide frame 32 can be used as the "in-place" signal of the open position of the hoist 1 and fed back to the control system. Next, the control system controls the hoist 1 to automatically perform the next action.

However, the control system refuses to perform a separate feedback signal from the first hook limit switch 4 and also refuses to perform a separate feedback signal from the second hook limit switch 5.

The control system uses the independent feedback signal of the first hook limit switch 4 or the second hook limit switch 5 as an accident signal to stop the elevator 1, for example, an audible and visual alarm is set on a central control computer picture to remind an operator to confirm and deal with the abnormal situation on site.

Further, limit protection measures, such as protective covers, can be installed around the first hook limit switch 4 on the first lower guide frame 31 and the second hook limit switch 5 on the second lower guide frame 32 to prevent the falling coke and foreign matters from being damaged and affecting normal safe operation.

According to the utility model discloses embodiment provides a modified chain protection device for dry coke quenching lifting machine can effectively solve because of appearing abnormal conditions such as lifting machine one side weighing sensor fracture, wire rope breakage, burnt jar clamp burnt, one side lifting hook is opened, and the opposite side lifting hook is not opened, leads to taking place the electric locomotive to scrape the technological problem who bumps the lifting hook accident, has avoided the accident to take place.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element. In addition, "front", "rear", "left", "right", "upper" and "lower" in this document are referred to the placement states shown in the drawings.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may be modified or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims (2)

1. An improved interlock protection device for a dry quenching elevator, wherein the elevator is mounted on an elevator head frame to be controlled to ascend and descend by a control system, an upper guide frame and a lower guide frame for guiding the elevator to ascend and descend, and a hook mounted on the lower guide frame are provided on the elevator head frame, wherein the lower guide frame includes a first lower guide frame and a second lower guide frame respectively located at opposite sides of the elevator head frame, wherein the hook has an open position for allowing the elevator reel to be completely opened, characterized in that,

The interlock protection device includes: the lifting hook comprises a first lifting hook limit switch and a second lifting hook limit switch, wherein the first lifting hook limit switch is arranged at the opening position of a lifting hook on the first lower guide frame, the second lifting hook limit switch is arranged at the opening position of a lifting hook on the second lower guide frame, the first lifting hook limit switch and the second lifting hook limit switch are located at the same height position on a lifting machine derrick, and the first lifting hook limit switch and the second lifting hook limit switch are used for detecting whether the lifting hook is located at the opening position or not and feeding back a detection result to a control system.

2. The improved interlock protection device for a dry quenching elevator as set forth in claim 1, wherein a shield is mounted around the first hook limit switch on the first lower guide and the second hook limit switch on the second lower guide.