CN113753524A - Chain breakage protection detection device, equipment and method for slag conveyor - Google Patents

Abstract

The invention provides a chain breakage protection detection device, equipment and a method for a slag conveyor, and relates to the technical field of slag conveyors. The chain breakage protection detection device of the slag conveyor comprises a proximity switch, a first metal component and a second metal component; the first metal component is provided with a matching action part which is opposite to the sensing surface of the proximity switch at an interval at an initial position; the second metal component is provided with a first connecting part used for being connected with the first metal component and a second connecting part used for extending into a chain bin of the slag conveyor, so that the second metal component swings along with the movement of a scraper in the chain bin, and the matching action part of the first metal component and the proximity switch are driven to be staggered in the swinging process, so that the pulse frequency signal changes. The device and the equipment can accurately and timely judge the chain breakage condition of the slag conveyor, are convenient to replace, have long service life and are not easy to damage. The corresponding detection method has high reliability and simple and convenient operation.

Description

Chain breakage protection detection device, equipment and method for slag conveyor

Technical Field

The invention relates to the technical field of slag conveyors, in particular to a chain breakage protection detection device, equipment and a method for a slag conveyor.

Background

The water seal scraper slag conveyor changes the chain climbing chain because of the chain belt slag causes the pitch circle of the ratchet wheel of the slag conveyor in the operation process, the chain is seriously worn, the overload operation exists, the service life of the chain wheel and the ratchet wheel is shortened, the chain is finally broken, if the abnormal condition can not be timely detected and the equipment is stopped running after the chain is broken, the damage of the slag conveyor can be serious, the accident is further enlarged, and the follow-up repair is more difficult. Therefore, the detection switch of the chain breakage of the dragger conveyor is the most important ring in the link, and the accuracy of the detection switch must be ensured.

The chain breakage detection switch of the existing slag conveyor is generally that a proximity switch is respectively arranged at the left and right tensioning wheels, a concave-convex iron sheet is arranged on the tensioning wheel, the proximity switch is opposite to the iron sheet, a gap of 2-3mm is arranged between the two proximity switches, when the slag conveyor continuously operates, the two proximity switches and the concave-convex iron sheet are matched to generate a signal with fixed frequency, the signal is sent into a local control cabinet to be processed through a time relay, if the slag conveyor breaks down, such as the conditions of breakage, chain falling and the like, the generated pulse frequency is ceaseless with the normal frequency, and whether the slag conveyor breaks down or not can be judged through the judgment of the time interval of the pulse signal.

But the judgment result of the chain breakage detection device of the slag conveyor is lower in accuracy.

In view of this, the present application is specifically made.

Disclosure of Invention

One of the purposes of the invention is to provide a chain breakage protection detection device for a slag conveyor, which can accurately and timely judge the chain breakage condition of the slag conveyor, is convenient to replace, has a long service life and is not easy to damage.

The invention also aims to provide dragveyer chain-breaking protection detection equipment comprising the dragveyer chain-breaking protection detection device.

The invention also aims to provide a method for detecting by adopting the dragveyer chain-breaking protection detection device or the dragveyer chain-breaking protection detection equipment.

The application can be realized as follows:

in a first aspect, the application provides a chain breakage protection detection device for a slag conveyor, which comprises a proximity switch, a first metal component and a second metal component;

the first metal component is provided with a matching action part which is opposite to the sensing surface of the proximity switch at an interval at an initial position;

the second metal component is provided with a first connecting part used for being connected with the first metal component and a second connecting part used for extending into a chain bin of the slag conveyor, so that the second metal component swings along with the movement of a scraper in the chain bin, and the matching action part of the first metal component and the proximity switch are driven to be staggered in the swinging process, so that the pulse frequency signal changes.

In an alternative embodiment, the distance between the cooperating portion and the proximity switch in the initial position is 5 mm.

In an optional embodiment, the first metal assembly includes a first metal piece and a second metal piece, the cooperation part is located at one end of the first metal piece, and two ends of the second metal piece are respectively connected with the first metal piece and the first connection part; the first metal piece and the second metal piece are vertically connected.

In an alternative embodiment, the first metal piece and the second metal piece are both iron pieces.

In an alternative embodiment, the width of the iron sheet is 40 mm.

In an optional embodiment, the second metal assembly includes a third metal piece and a fourth metal piece connected to each other, the third metal piece has a first metal section and a second metal section connected at an included angle, the fourth metal piece has a third metal section and a fourth metal section connected at an included angle, the first metal section to the fourth metal section are connected in sequence, the first connection portion is located at the first metal section, and the second connection portion is located at the fourth metal section; the included angle between the first metal section and the second metal section is 60-120 degrees, and/or the included angle between the third metal section and the fourth metal section is 60-120 degrees.

In an alternative embodiment, the third metal piece and the fourth metal piece are both "L" shaped metal tubes.

In an alternative embodiment, the third metal piece and the fourth metal piece are both "L" shaped stainless steel pipes, and more preferably, the pipe diameter of the "L" shaped stainless steel pipe is 12 mm.

In an alternative embodiment, the second metal segment and the third metal segment are connected in a straight line.

In an alternative embodiment, the first metal segment is welded to an outer surface of the second metal piece.

In an alternative embodiment, the second metal section and the third metal section are connected by a ferrule type movable structure.

In an optional embodiment, the chain breakage protection detection device of the slag conveyor further comprises a fixing piece, and the fixing piece comprises a first fixing piece for fixing the first metal component and a second fixing piece for fixing the proximity switch.

In an alternative embodiment, the first and second fixtures are the same fixture.

In an alternative embodiment, when the first fixing member and the second fixing member are the same fixing member, the fixing member includes a fixing frame, a rotary bearing, a bearing seat, and a plurality of fixing brackets; the rotating bearing is connected to the bearing seat and arranged in the fixed frame, two ends of each fixed support are respectively connected with the fixed frame and the bearing seat, and the plurality of fixed supports are arranged at intervals along the circumferential direction of the fixed frame;

the first metal piece comprises a first metal area and a second metal area which are mutually and vertically connected, the first metal area is connected with the rotating bearing, the matching action part is arranged in the second metal area, the second metal area is arranged along the thickness direction of the fixed frame, the frame edge of the fixed frame is provided with a through hole which is just opposite to the matching action part, and one end of the proximity switch penetrates through the through hole and is arranged at an interval with the matching action part; the second metal piece is vertically connected with the second metal area.

In an alternative embodiment, the second metal piece is attached to the center of the second metal area.

In an alternative embodiment, the first metal section is fixedly attached to the rotational bearing by a threaded rod.

In an alternative embodiment, the proximity switch is fixed to the fixed frame by a self-contained locking nut.

In an alternative embodiment, the fixed frame is a square frame with a side length of 200mm and a thickness of 50 mm.

In an alternative embodiment, the aperture of the through hole is 20 mm.

In an optional embodiment, the chain breakage protection detection device of the slag conveyor further includes a distributed control system, and the distributed control system is electrically connected to the proximity switch so that the pulse frequency signal of the proximity switch is transmitted to the distributed control system for logic judgment.

In a second aspect, the application provides a dragveyer chain breakage protection detection device, which comprises a dragveyer and a dragveyer chain breakage protection detection device of any one of the foregoing embodiments, wherein the dragveyer chain breakage protection detection device is provided with a part except for a second connecting part of a second metal component, which is arranged on the upper part of an observation port of a bottom chain bin of the dragveyer.

In a third aspect, the application provides a dragveyer chain breakage protection detection method, which adopts the dragveyer chain breakage protection detection device of any one of the foregoing embodiments or the dragveyer chain breakage protection detection equipment of the foregoing embodiments, drives the second connecting portion of the second metal component to swing through the movement of the scraper in the dragveyer chain bin, and makes the second connecting portion drive the cooperation portion of the first metal component to be dislocated with the proximity switch in the swing process to generate a pulse frequency signal change, thereby judging whether the dragveyer is chain broken.

In an alternative embodiment, if the proximity switch does not generate the pulse frequency signal change within 40s, the chain breakage of the dragger is judged.

The beneficial effect of this application includes:

in the dragveyer chain breakage protection detection device that this application provided, proximity switch all does not have direct contact with the moving part of dragveyer (like chain, scraper blade and guide pulley etc.) for detection device's mounted position environment improves greatly. The end of the second metal component far away from the first metal component directly collides with the scraper, the moving range and the adjusting range are wide, deviation caused by abrasion of the chain or the scraper is avoided, the second metal component is only linked with whether the scraper normally operates, and the measuring accuracy is greatly improved.

Therefore, the chain breakage protection detection device and equipment for the slag conveyor can accurately and timely judge the chain breakage condition of the slag conveyor, are long in service life and are not easy to damage. The corresponding detection method has high reliability and simple and convenient operation.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural view of a chain breakage protection detection device of a slag conveyor provided by the present application.

Icon: 1-a proximity switch; 21-a first metal piece; 22-a second metal piece; 211-a mating action portion; 212 — a first metal region; 213-a second metal region; 31-a third metal piece; 32-a fourth metal piece; 311-a first metal segment; 312 — a second metal segment; 321-a third metal segment; 322-a fourth metal segment; 41-a cutting sleeve type movable structure; 42-screw rod; 5-a fixing piece; 51-a fixed frame; 52-a rotational bearing; 53-bearing seats; 54-a fixed support; 511-through hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. indicate an orientation or a positional relationship based on that shown in the drawings or that the product of the present invention is used as it is, this is only for convenience of description and simplification of the description, and it does not indicate or imply that the device or the element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.

The following specifically describes the chain breakage protection detection device, equipment and method for the slag conveyor provided by the application.

The inventor intensively studies the chain breakage protection detection of the existing dragveyer, and finds that the reasons of the problem of low accuracy of the judgment result of the chain breakage state mainly include the following aspects:

firstly, the installation mode is unreasonable: because proximity switch's maximum detection distance is only 5mm, the clearance rather than the unsmooth iron sheet of complex is only 2-3mm, and unsmooth iron sheet is installed on the take-up pulley, long-term operation in-process at the dragveyer, the chain wearing and tearing can appear, elongate, the condition such as deformation, under this condition, thereby the take-up pulley can automatic adjustment tensioning degree move from top to bottom or lateral shifting appears, the skew of this kind of slight degree is in the allowed band, but this kind of slight skew can make proximity switch and unsmooth iron sheet's distance change, the undersize detection distance does not have the adjustment allowance completely, not only can not normally detect when this condition appears, still can send wrong signal, can lead to wherein the proximity switch of one side among them by the collision damage even. Meanwhile, the tensioning wheel at the tail part is easy to accumulate slag, the position can be buried by the slag and cannot be measured due to the slag accumulation, and the proximity switch can be damaged due to the slag accumulation. In addition, the working environment of the proximity switch is very humid, the concave-convex iron sheet is easy to rust to influence the measurement gap, and a large amount of water vapor can also influence the service life of the proximity switch.

Secondly, the judgment mode of the fault is unreasonable: the field control uses two proximity switches and four time relays to form a loop for judgment, and because each relay needs to be continuously switched on and off, a protection loop formed by the relays also frequently acts, the service life of the equipment is greatly shortened, and the occurrence of errors in any frequency detection can cause protection misoperation to influence the normal operation of the slag conveyor.

Therefore, the fault rate and the damage rate of the chain breakage detection switch used in the prior art are high, the detection control loop is not reasonable, the damaged equipment is inconvenient to replace and can be carried out only by stopping the equipment, the effective detection and protection effects cannot be achieved, and the normal operation of the slag conveyor is threatened greatly.

In view of this, the inventor proposes a new chain-breaking protection detection device for a slag conveyor, please refer to fig. 1, which includes a proximity switch 1, a first metal component and a second metal component.

Wherein the first metal component has a cooperating part 211 which is arranged opposite to the sensing surface of the proximity switch 1 at an interval in the initial position. The second metal component is provided with a first connecting part used for being connected with the first metal component and a second connecting part used for extending into a chain bin of the slag conveyor, so that the second metal component swings along with the movement of a scraper in the chain bin, and the matching action part 211 of the first metal component is driven to be dislocated with the proximity switch 1 in the swinging process, so that pulse frequency signal change is generated.

It should be noted that the end of the second connecting portion extending into the chain chamber is located between two adjacent scrapers, and since the scrapers have a certain height, the end of the second connecting portion is located at the bottom of the scraper, so when the two scrapers move, the second connecting portion can be driven to swing upwards, and when the swing height exceeds the height of the scrapers, the second connecting portion returns to the initial position under the action of gravity and is located between two new scrapers corresponding to the initial position at the moment, and swings again under the movement of the two scrapers, and the process is repeated. If the chain breakage does not occur, the swing of the second connecting part has periodicity, and if the period of the swing changes, the chain breakage occurs.

In this embodiment, since the second metal component is connected to the first metal component, the periodic change of the second connecting portion makes the first metal component also rotate periodically, that is, the position relationship between the cooperation portion 211 and the proximity switch 1 changes periodically, so that the proximity switch 1 generates a pulse frequency signal change, and according to the change rule of the pulse frequency signal, it can be determined whether the chain breakage occurs in the slag conveyor.

In this embodiment, at the initial position, the distance between the cooperative action portion 211 and the proximity switch 1 is 5mm, and a sufficient preset offset range can be reserved, thereby avoiding the situation of damage caused by contact and collision between the cooperative action portion 211 and the proximity switch 1.

In this embodiment, the first metal component includes a first metal part 21 and a second metal part 22, the cooperation part 211 is located at one end of the first metal part 21, and two ends of the second metal part 22 are respectively connected to the first connecting parts of the first metal part 21 and the second metal component.

In reference, the first metal member 21 and the second metal member 22 are vertically connected, which may be understood as a "T" type connection, and the first metal member 21 and the second metal member 22 may be iron sheets (such as flat irons), and in this condition, the first metal member 21 and the second metal member 22 may be collectively referred to as "T" type flat irons. By the perpendicular connection, good stability can be obtained.

Furthermore, other angled connections between the first metal part 21 and the second metal part 22 are not excluded, but preferably a perpendicular connection. The first metal part 21 and the second metal part 22 may be made of other metal materials or have other shapes. The iron plate may, by reference, have a width of 40mm, a size which is suitable for use with the rotary bearing 52 described below. It should be noted that in actual use, the width dimension of the patch may vary depending on the particular rotational bearing 52.

The second metal component comprises a third metal piece 31 and a fourth metal piece 32 which are connected with each other, the third metal piece 31 is provided with a first metal section 311 and a second metal section 312 which are connected at an included angle, the fourth metal piece 32 is provided with a third metal section 321 and a fourth metal section 322 which are connected at an included angle, the first metal section 311 to the fourth metal section 322 are sequentially connected, the first connecting portion is located at the first metal section 311, and the second connecting portion is located at the fourth metal section 322.

Preferably, the third metal fitting 31 and the fourth metal fitting 32 are made of the same material, shape, or the like.

In alternative embodiments, the included angle between the first metal segment 311 and the second metal segment 312 may be 60 ° to 120 °, such as 60 °, 80 °, 90 °, 120 °, or the like, or any other value within the range of 60 ° to 120 °. Similarly, the included angle between the third metal segment 321 and the fourth metal segment 322 may also be 60 ° to 120 °, such as 60 °, 80 °, 90 °, or 120 °, and may also be any other value within the range of 60 ° to 120 °.

Preferably, the third metal part 31 and the fourth metal part 32 are both "L" shaped metal tubes, specifically, "L" shaped stainless steel tubes, and the diameter of the "L" shaped stainless steel tubes may be 12 mm. In addition, other metal materials or other metal shapes may be used.

The L-shaped structure can obtain better stability, and the stainless steel tube can have higher hardness and wear resistance as a material, so that rapid wear in the operation process is avoided.

In detail, an end of the first metal segment 311 away from the second metal segment 312 is welded to the outer surface of the second metal piece 22. The second metal segment 312 and the third metal segment 321 are linearly connected, and the connection between the two metal segments can be connected by a ferrule type movable structure 41. The fourth metal segment 322 is used for extending into a chain bin of the slag conveyor, and one end of the fourth metal segment 322 far away from the third metal segment 321 is positioned at the bottom of the scraper.

Further, the chain breakage protection detection device for the slag conveyor further comprises a fixing part 5, and the fixing part 5 comprises a first fixing part 5 used for fixing the first metal component and a second fixing part 5 used for fixing the proximity switch 1.

It should be noted that the first fixing member 5 and the second fixing member 5 may be 2 independent fixing members 5, or may be the same fixing member 5.

When the first fixing member 5 and the second fixing member 5 are the same fixing member 5, the fixing member 5 may include a fixing frame 51, a rotating bearing 52, a bearing seat 53 and a plurality of fixing brackets 54; the rotary bearing 52 is connected to the bearing housing 53 and is provided inside the fixed frame 51 (the rotary bearing 52 and the bearing housing 53 are connected to each other in the thickness direction of the fixed frame 51), both ends of each fixed bracket 54 are connected to the fixed frame 51 and the bearing housing 53, respectively, and the plurality of fixed brackets 54 are provided at intervals in the circumferential direction of the fixed frame 51.

The above-mentioned fixed frame 51 may be, for example, a square frame having a side length of 200mm, and may have a thickness of 50 mm. In some embodiments, the fixing member 5 may be a part that retains the frame and the center bearing after the blades are removed by a general axial flow heat dissipation fan.

For reference, the first metal part 21 may include a first metal region 212 and a second metal region 213 (it may be understood that the end portion of the transverse shaft of the "T" type flat iron is bent into a right angle to form a right-angle iron sheet), which are perpendicularly connected to each other, the first metal region 212 is connected to the rotating bearing 52, the cooperation part 211 is disposed in the second metal region 213, the second metal region 213 is disposed along the thickness direction of the fixing frame 51, the frame edge of the fixing frame 51 is provided with a through hole 511 facing the cooperation part 211, and one end of the proximity switch 1 penetrates through the through hole 511 and is disposed at an interval with the cooperation part 211; the second metal piece 22 is vertically connected to the second metal region 213.

Wherein the first metal region 212 may be fixedly connected to the rotational bearing 52 by the screw 42. The second metal piece 22 is preferably attached to the center (preferably the very center) of the second metal region 213. The proximity switch 1 may be fixed to the fixing frame 51 by a lock nut provided thereto. The aperture of the through hole 511 may be 20 mm.

Further, the chain breakage protection detection device of the slag conveyor further comprises a distributed control system (DCS, not shown), and the distributed control system is electrically connected with the proximity switch 1 so that the pulse frequency signal of the proximity switch 1 is transmitted to the distributed control system for logic judgment.

It should be noted that reference may be made to the prior art for the composition and operation principle of DCS, and no further description is made herein.

In addition, this application still provides a dragveyer chain breakage protection check out test set, and it includes dragveyer (not shown) and above-mentioned dragveyer chain breakage protection detection device, and the part except the second connecting portion of second metal component in the dragveyer chain breakage protection detection device all sets up in the viewing aperture upper portion in the bottom chain storehouse of dragveyer.

In summary, the working principle of the chain breakage protection detection device for the slag conveyor can refer to the following simplified contents:

a common small axial flow heat radiation fan is utilized, blades are removed, a frame and a middle bearing part are reserved, a T-shaped flat iron with the width of 40mm is fixed on the bearing, a T-shaped flat iron cross point is located in the center of the bearing, the lower part of the T-shaped flat iron naturally drops, the end part of a transverse shaft of the T-shaped flat iron is bent into a right angle to form a right-angle iron sheet, a hole is formed in the frame of the axial flow fan, a proximity switch 1 is installed on the frame of the axial flow fan, the proximity switch 1 is opposite to the right-angle iron sheet, a 5mm gap is reserved in the middle, and the detection device is formed by matching. An L-shaped stainless steel pipeline is welded and installed at the lower hanging part of the T-shaped iron plate, and a second L-shaped stainless steel pipeline is connected to the other end of the stainless steel pipeline, wherein the diameter of the stainless steel pipeline is 12 mm.

Install the viewing aperture upper portion in the bottom chain storehouse of dragveyer with above-mentioned device, make inside the second stainless steel pipe of "L" type gos deep into the chain storehouse, its flagging end just in time is located in the middle of two scrapers, when the chain drives the scraper blade motion, drive the stainless steel pipe motion of "L" type, thereby make the "T" type band iron that is connected with it rotate, proximity switch 1 can misplace rather than the right angle iron piece that is close to like this, proximity switch 1 signal changes, can cross the scraper blade height after "L" type stainless steel pipe rotates one section distance along with the scraper blade, return to initial position under the action of gravity, proximity switch 1 signal changes once more. The change in the output signal of the proximity switch 1 is caused by such a change in direct contact with the blade, and the signal is sent directly to the DCS. When the slag conveyor runs normally, the time interval of the movement of two adjacent scrapers is about 30s, if the signal is not changed within 40s set in the configuration logic, the chain of the slag conveyor is judged to be broken, and a chain breakage alarm is sent out and equipment is shut down.

Correspondingly, the application also provides a dragveyer chain breakage protection detection method, the dragveyer chain breakage protection detection device or dragveyer chain breakage protection detection equipment is adopted, the scraper plate in the dragveyer chain bin moves to drive the second connecting part of the second metal component to swing, the second connecting part drives the matching action part 211 of the first metal component to be staggered with the proximity switch 1 in the swinging process to generate pulse frequency signal change, and then whether the dragveyer chain breakage occurs is judged. Preferably, if no pulse frequency signal change is generated in the proximity switch 1 within 40s, the chain breakage of the dragger is judged.

For a more specific principle of the dragveyer chain breakage protection detection method, reference may be made to the related contents in the dragveyer chain breakage protection detection device, which are not described herein in detail.

In summary, the scheme proposed by the present application has the following advantages:

(1) the installation position of a proximity switch 1 in the prior art is completely changed, a set of new equipment is redesigned for measuring the movement condition of the scraper of the slag conveyor, the proximity switch 1 is completely not in direct contact with all the moving parts of the slag conveyor such as a chain, the scraper, a guide wheel and the like, the installation position environment of a measuring device is greatly improved, a fan frame is completely fixed and cannot be influenced by the operation of the slag conveyor, the gap between the proximity switch 1 and an iron sheet cannot be changed, the parts of an axial flow fan such as a bearing and the like have good rotation performance, and the service life of the equipment is greatly prolonged;

(2) the device that "L" type stainless steel pipe and "T" type iron sheet constitute jointly, because direct and scraper blade collision, its home range and control range are wider, can not receive the chain, the scraper blade wearing and tearing lead to the condition of the slight skew of equipment, only with whether the scraper blade is in normal operation the contact, so its measurement accuracy promotes by a wide margin, simultaneously "L" stainless steel pipe has used movable cutting ferrule formula to connect in the centre, even receive long-term scraping when the end and lead to length to shorten like this, it is also unusual convenient to change, can go on after the complete equipment that does not need to stop the transport.

(3) The pulse frequency signal of the proximity switch 1 is directly sent to DSC configuration logic judgment, and the judged broken link signal participates in protection, so that on-site relay loop equipment is avoided, and due to the high reliability of DCS, the accuracy of logic judgment can be ensured, and the accurate action of the protection is ensured.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. A chain breakage protection detection device of a slag conveyor is characterized by comprising a proximity switch, a first metal component and a second metal component;

the first metal component is provided with a matching action part which is opposite to the sensing surface of the proximity switch at an interval at an initial position;

the second metal component is provided with a first connecting part used for being connected with the first metal component and a second connecting part used for extending into a chain bin of the slag conveyor, so that the second metal component swings along with the movement of a scraper in the chain bin, and the cooperation part of the first metal component and the proximity switch are driven to be dislocated in the swinging process, so that pulse frequency signal change is generated.

2. The apparatus according to claim 1, wherein the distance between the engagement portion and the proximity switch is 5mm in the initial position.

3. The chain breakage protection detection device of the slag conveyor according to claim 1, wherein the first metal assembly comprises a first metal piece and a second metal piece, the cooperation part is located at one end of the first metal piece, and two ends of the second metal piece are respectively connected with the first metal piece and the first connecting part;

the first metal piece and the second metal piece are vertically connected;

preferably, the first metal piece and the second metal piece are both iron sheets;

preferably, the width of the iron sheet is 40 mm.

4. The apparatus according to claim 3, wherein the second metal assembly comprises a third metal member and a fourth metal member connected to each other, the third metal member has a first metal section and a second metal section connected at an included angle, the fourth metal member has a third metal section and a fourth metal section connected at an included angle, the first metal section and the fourth metal section are connected in sequence, the first connecting portion is located at the first metal section, and the second connecting portion is located at the fourth metal section;

the included angle between the first metal section and the second metal section is 60-120 degrees, and/or the included angle between the third metal section and the fourth metal section is 60-120 degrees;

preferably, the third metal piece and the fourth metal piece are both L-shaped metal tubes;

preferably, the third metal piece and the fourth metal piece are both L-shaped stainless steel tubes, and more preferably, the tube diameter of each L-shaped stainless steel tube is 12 mm;

preferably, the second metal segment and the third metal segment are connected in a straight line;

preferably, the first metal section is welded to the outer surface of the second metal piece;

preferably, the second metal section and the third metal section are connected through a ferrule type movable structure.

5. The apparatus of claim 4, further comprising a fixture, the fixture comprising a first fixture for securing the first metal component and a second fixture for securing the proximity switch;

preferably, the first fixing member and the second fixing member are the same fixing member.

6. The apparatus of claim 5, wherein when the first and second fixtures are the same fixture, the fixture comprises a fixed frame, a rotating bearing, a bearing seat, and a plurality of fixed brackets; the rotating bearing is connected to the bearing seat and arranged in the fixed frame, two ends of each fixed support are respectively connected with the fixed frame and the bearing seat, and the plurality of fixed supports are arranged at intervals along the circumferential direction of the fixed frame;

the first metal piece comprises a first metal area and a second metal area which are vertically connected with each other, the first metal area is connected with the rotating bearing, the cooperation action part is arranged in the second metal area, the second metal area is arranged along the thickness direction of the fixed frame, a through hole which is opposite to the cooperation action part is arranged on the frame edge of the fixed frame, and one end of the proximity switch penetrates through the through hole and is arranged at an interval with the cooperation action part; the second metal piece is vertically connected with the second metal area;

preferably, the second metal piece is connected to the center of the second metal area;

preferably, the first metal area is fixedly connected to the rotary bearing through a screw;

preferably, the proximity switch is fixed on the fixing frame through a self-contained locking nut;

preferably, the fixed frame is a square frame with the side length of 200mm and the thickness of 50 mm;

preferably, the aperture of the through hole is 20 mm.

7. The apparatus according to any one of claims 1 to 6, wherein the apparatus further comprises a distributed control system electrically connected to the proximity switch for transmitting the pulse frequency signal of the proximity switch to the distributed control system for logic determination.

8. A chain breakage protection detection device of a slag conveyor, which is characterized by comprising a slag conveyor and the chain breakage protection detection device of the slag conveyor as claimed in any one of claims 1 to 7, wherein the parts of the chain breakage protection detection device of the slag conveyor except for the second connecting part of the second metal component are arranged on the upper part of an observation port of a bottom chain bin of the slag conveyor.

9. The dragveyer chain breakage protection detection method is characterized in that the dragveyer chain breakage protection detection device in any one of claims 1-7 or the dragveyer chain breakage protection detection equipment in claim 8 are adopted, the scraper in a dragveyer chain bin moves to drive the second connecting portion of the second metal component to swing, the second connecting portion drives the matching action portion of the first metal component and the proximity switch to be staggered in the swinging process, and therefore pulse frequency signal changes are generated, and whether the dragveyer chain breakage occurs or not is judged.

10. The method for detecting chain breakage of a slag conveyor according to claim 9, wherein the chain breakage of the slag conveyor is determined if the proximity switch does not generate a change of the pulse frequency signal within 40 s.

Images