A protective device for steel belt slag conveyor

Abstract

The present invention discloses a protection device for a steel belt slag conveyor, which includes a steel belt body, a steel belt groove, a steel belt limit plate, a detection plate and a plurality of detection switches; the loose edge of the steel belt body passes through the steel belt groove; the steel belt limit plate is fixedly arranged in the steel belt groove; the steel belt body is located on the upper surface of the steel belt limit plate and is in sliding contact with the steel belt limit plate; the detection plate is movably arranged above the steel belt groove, and under normal conditions, the detection plate is arranged parallel to the steel belt limit plate; a plurality of the detection switches are arranged above the detection plate, and under normal conditions, the detection switches are turned on, and when the posture or position of the detection plate changes, at least one of the detection switches is turned off. The present invention can timely detect the deformation of the steel belt, and can timely detect the situation that the steel belt is convex, skewed and twisted, which is conducive to the protection of the steel belt.

Description

Technical Field

[0001] The invention relates to the technical field of steel belt slag conveyors, in particular to a protective device for a steel belt slag conveyor. Background Art

[0002] The steel belt slag conveyor is a key equipment in the slag removal system. It uses the steel belt as a traction component and also as a load-bearing component to collect and transport the ash. The head of the steel belt slag conveyor is equipped with a drive device, which is driven by a motor with a reducer to drive the conveying steel belt and the scraper cleaning chain to scrape and transport the slag at the bottom of the slag conveyor. In the actual operation of the steel belt slag conveyor, the steel belt will be deformed. When the deformation of the steel belt intensifies to a certain extent, if there is no corresponding protective device, the slag conveyor will continue to operate, causing the steel belt to be skewed, bulged, twisted, and even cause the drive motor to be overloaded and damaged, which will increase the maintenance cost of the slag removal machine, and will also increase the labor intensity of the repair personnel, and even affect the normal operation of related equipment.

[0003] In the prior art, a motor overload protection device is installed in the control cabinet of the slag conveyor head drive device to ensure that when the steel belt of the slag conveyor is deformed, the motor is overloaded and the overload protection device is activated, and the slag conveyor stops running, thereby avoiding malignant deformation or even breakage of the steel belt and preventing the drive motor from being damaged due to overload.

[0004] Although the existing motor overload protection device can play a protective role to a certain extent, since the driving motor is equipped with a reducer, the action value of the motor overload protection device cannot be accurately set, and the motor overload protection device may malfunction or act untimely. When the steel belt is convex, skewed, or twisted, the motor overload protection device cannot detect it, and the continued operation of the driving motor will still cause malignant deformation of the steel belt, affecting the safe and stable operation of the steel belt slag conveyor. Summary of the invention

[0005] The purpose of the present invention is to provide a steel belt slag conveyor protection device to solve the deficiencies in the prior art. It can timely detect the deformation of the steel belt, and can timely detect the bulge, skewness and twist deformation of the steel belt, which is conducive to the protection of the steel belt.

[0006] The present invention provides a steel belt slag conveyor protection device, which includes a steel belt body, a steel belt groove, a steel belt limit plate, a detection plate and a plurality of detection switches;

[0007] The loose edge of the steel belt body passes through the steel belt groove;

[0008] The steel belt limiting plate is fixedly arranged in the steel belt groove; the steel belt body is located on the upper surface of the steel belt limiting plate and is in sliding contact with the steel belt limiting plate;

[0009] The detection plate is movably arranged above the steel belt groove, and in a normal state, the detection plate is arranged parallel to the steel belt limiting plate;

[0010] A plurality of the detection switches are arranged above the detection board, and in a normal state, the detection switches are turned on, and when the posture or position of the detection board changes, at least one of the detection switches is turned off.

[0011] The steel belt slag conveyor protection device as described above, wherein, optionally, the detection plate is a rectangular plate, the number of the detection switches is at least four, and the detection switches are arranged at the four vertex corners of the detection plate.

[0012] The steel belt slag conveyor protection device as described above, wherein, optionally, it further comprises a fixing rod, and the number of the fixing rods is multiple;

[0013] The fixing rods are fixedly arranged and located on both sides of the steel belt groove;

[0014] The detection plate is movably connected to the fixing rod; the detection switch is fixedly installed on the fixing rod.

[0015] As described above, in the protection device for the steel belt slag conveyor, optionally, the bottom of the detection plate on the side away from the moving direction of the steel belt body below it is bent upward and in an arc shape.

[0016] The steel belt slag conveyor protection device as described above, wherein, optionally, the steel belt groove includes an inclined section and a horizontal section, the lower end of the inclined section is connected to one end of the horizontal section; the steel belt body moves from the higher end of the inclined section to the lower end and enters the horizontal section;

[0017] The detection plate is arranged at the lower end of the inclined section and / or at an end of the horizontal section away from the inclined section.

[0018] The steel belt slag conveyor protection device as described above, wherein, optionally, it further comprises a plurality of connecting plates;

[0019] The number of the steel belt bodies is two, and the connecting plate is arranged between the two steel belt bodies and is fixedly connected to the two steel belt bodies respectively.

[0020] As described above, the protection device for the steel belt slag conveyor, wherein, optionally, the detection switch is a normally closed switch, and a plurality of the detection switches are connected in series in an energized circuit, in which an electromagnetic coil is connected in series; the electromagnetic coil is used to control an electromagnetic switch connected in series to the steel belt slag conveyor; when all the detection switches are turned on, the electromagnetic coil controls the electromagnetic switches to be turned on.

[0021] Compared with the prior art, the present invention has at least the following beneficial effects:

[0022] When in use, when the loose edge of the steel belt is bulged, skewed or twisted in the steel belt groove, the abnormal deformation of the steel belt will be converted into an upward bulge due to the contact between the bottom of the steel belt body and the steel belt limiting plate.

[0023] When the raised position moves below the detection plate, since the detection plate is movably arranged, the detection plate will be tilted or moved in a direction perpendicular to the steel belt limit plate; and this change of the limit plate will cause one or more detection switches to change state, thereby generating corresponding electrical signals, thereby achieving the effect of detecting and protecting the steel belt of the slag conveyor. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an axonometric diagram of the overall structure of the present invention;

[0025] Figure 2 yes Figure 1 A local enlarged schematic diagram of the middle A;

[0026] Figure 3 It is a schematic diagram of the circuit structure of the present invention.

[0027] Description of reference numerals:

[0028] 1- steel belt body, 2- steel belt groove, 3- steel belt limit plate, 4- detection plate, 5- detection switch, 6- fixing rod, 7- inclined section, 8- horizontal section, 9- connecting plate, 10- power circuit, 11- electromagnetic coil, 12- electromagnetic switch. DETAILED DESCRIPTION

[0029] The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, but should not be construed as limiting the present invention.

[0030] Please refer to Figure 1 and Figure 2 The present invention proposes a steel belt slag conveyor protection device, which includes a steel belt body 1, a steel belt groove 2, a steel belt limit plate 3, a detection plate 4 and a plurality of detection switches 5.

[0031] The steel belt body 1 is a steel belt or a steel chain used in a chain drive in the prior art, and the steel belt groove 2 accommodates the steel belt body 1, wherein in the present application, the portion accommodated by the steel belt groove is the loose edge of the steel belt body 1. The detection plate 4 is used to generate a posture change when the steel belt is deformed. The function of the multiple detection switches 5 is to detect the posture change of the detection plate 4, thereby determining that the steel belt body 1 has been deformed, and at the same time, after the posture of the detection plate 4 changes, a change in the state of the electrical signal is generated, so as to realize operations such as shutdown according to the change in the state of the electrical signal.

[0032] Specifically, the loose edge of the steel belt body 1 passes through the steel belt groove 2; the steel belt limiting plate 3 is fixedly arranged in the steel belt groove 2; the steel belt body 1 is located on the upper surface of the steel belt limiting plate 3 and is in sliding contact with the steel belt limiting plate 3. In specific implementation, the steel belt limiting plate 3 is perpendicular to the side wall of the steel belt groove 2, and the steel belt limiting plate 3 is parallel to the plane where the notch of the steel belt groove 2 is located. In implementation, the steel belt groove 2 is surrounded by three strip plates, and the steel belt groove 2 is a rectangular groove.

[0033] Furthermore, the detection plate 4 is movably arranged above the steel belt groove 2. In a normal state, the detection plate 4 is arranged parallel to the steel belt limit plate 3. In the present application, the detection plate 4 may be arranged in a sliding manner, may be hinged, or may be a clearance fit between an axis and a hole. In the present application, the normal state refers to a state in which the detection plate 4 is not subjected to the force generated by the deformation of the steel belt body 1.

[0034] A plurality of the detection switches 5 are disposed above the detection board 4 , and in a normal state, the detection switches 5 are turned on, and when the posture or position of the detection board 4 changes, at least one of the detection switches 5 is turned off.

[0035] During use, when the steel belt body 1 is deformed, the steel belt body 1 at the deformed part will produce an upward bulge due to the force of the steel belt limit plate 3 on the bottom. As the steel belt body 1 moves, the bulge will also move forward. When the bulge moves to the bottom of the detection plate 4, it will generate an upward force on the detection plate 4, thereby changing the posture of the detection plate 4. Due to the change in the posture of the detection plate 4, the state detected by the detection switch 5 above the detection plate 4 will change, thereby causing at least one detection switch 5 to generate a change in the electrical signal. In this way, it can be determined whether the steel belt body 1 has been deformed, and the change in the electrical signal of the detection switch 5 can be used to control the steel belt slag conveyor to protect the steel belt slag conveyor, especially the steel belt. In specific implementation, the detection switch 5 is a travel switch.

[0036] As a preferred implementation, when the number of detection switches 5 is certain, the detection switches 5 should be arranged as much as possible at the edge of the detection board 4, and at the same time, the detection switches 5 should be evenly distributed along the circumference of the detection board 4. Specifically, the detection board 4 is a rectangular board, the number of the detection switches 5 is at least four, and the detection switches 5 are arranged at the four vertex corners of the detection board 4.

[0037] In order to achieve relative movement between the detection plate 4 and the detection switch 5, and then utilize this relative movement to change the electrical signal of at least one detection switch 5, the present invention also includes a fixing rod 6, and the number of the fixing rod 6 is multiple; specifically, the fixing rod 6 is fixedly arranged and located on both sides of the steel belt groove 2; during implementation, the fixing rod 6 can be arranged on the ground, or on the outer surface of the steel belt groove 2. More specifically, the detection plate 4 is movably connected to the fixing rod 6; the detection switch 5 is fixedly mounted on the fixing rod 6. In a preferred embodiment, a protruding shaft is provided on the detection plate 4, and a mounting hole is provided on the fixing rod 6, and the mounting hole is larger than the shaft. In one embodiment, the mounting hole is a strip hole, and the length direction of the strip hole is perpendicular to the steel belt limit plate 3.

[0038] As a preferred implementation method, in order to allow the protrusion on the steel belt body 1 to smoothly enter the bottom of the detection plate 4, the bottom of the detection plate 4 on the side away from the moving direction of the steel belt body 1 below it is bent upward and in an arc shape. More specifically, in order to ensure that the protrusion generated by the steel belt body 1 can cause the detection plate 4 to change its posture, when setting it, it should be ensured that, in the natural state, the distance between the detection plate 4 and the steel belt limit plate 3 is greater than the thickness of the steel belt and less than the length of the steel belt unit. Specifically, the steel belt unit referred to here refers to the smallest unit constituting the steel belt body, which is a prior art and will not be repeated.

[0039] As a preferred implementation, the steel belt groove 2 includes an inclined section 7 and a horizontal section 8, the lower end of the inclined section 7 is connected to one end of the horizontal section 8; the steel belt body 1 moves from the higher end of the inclined section 7 to the lower end and enters the horizontal section 8; the detection plate 4 is arranged at the lower end of the inclined section 7 and / or the end of the horizontal section 8 away from the inclined section 7. That is, the detection plate 4 is arranged at the end of each section, and when in use, as the steel belt body 1 moves, the protrusion generated on the steel belt body 1 moves to the end of the inclined section 7 or the end of the horizontal section 8, it can be detected, especially for the inclined section 7, when the steel belt body 1 moves downward along the inclined section 7, it is easier to generate a protrusion, therefore, the detection plate 4 is arranged at the end, which can be conducive to the detection of the steel belt body 1.

[0040] As a preferred implementation, it further includes a plurality of connecting plates 9; the number of the steel belt bodies 1 is two, and the connecting plates 9 are disposed between the two steel belt bodies 1 and are fixedly connected to the two steel belt bodies 1 respectively.

[0041] Please refer to Figure 3 , in specific implementation, for the convenience of control, the output signal of the detection switch 5 can be input into the controller to control the shutdown of the steel belt slag conveyor. On the other hand, control through the controller requires major changes to the steel belt slag conveyor, which will require shutdown updates. To this end, in order to reduce the impact of the improvement on the original system, the following settings are further made in this application: the detection switch 5 is a normally closed switch, and multiple detection switches 5 are connected in series in an electric circuit 10, and an electromagnetic coil 11 is connected in series in the electric circuit 10; the electromagnetic coil 11 is used to control an electromagnetic switch 12 connected in series to the steel belt slag conveyor; when all the detection switches 5 are turned on, the electromagnetic coil 11 controls the electromagnetic switch 12 to be turned on. During implementation, when one of the detection switches 5 is disconnected, the electromagnetic coil 11 no longer generates magnetic force, the electromagnetic switch 12 is disconnected, and the steel belt slag conveyor is shut down. Specifically, the electromagnetic switch 12 refers to a switch that can change position under the action of magnetic force. More precisely, the electromagnetic switch 12 and the electromagnetic coil 11 form a relay switch. Figure 3 Among them, SQ1, SQ2, SQ3, SQ4, SQ5, SQ6, SQ7 and SQ8 are all detection switches.

[0042] The above describes in detail the structure, features and effects of the present invention based on the embodiments shown in the drawings. The above is only a preferred embodiment of the present invention, but the present invention is not limited to the scope of implementation shown in the drawings. Any changes made according to the concept of the present invention, or modifications to equivalent embodiments with equivalent changes, which still do not exceed the spirit covered by the description and drawings, should be within the protection scope of the present invention.

Claims

1. A steel belt slag conveyor protection device, characterized in that: It comprises a steel belt body (1), a steel belt groove (2), a steel belt limit plate (3), a detection plate (4) and a plurality of detection switches (5); The loose edge of the steel belt body (1) passes through the steel belt groove (2); The steel belt limiting plate (3) is fixedly arranged in the steel belt groove (2); the steel belt body (1) is located on the upper surface of the steel belt limiting plate (3) and is in sliding contact with the steel belt limiting plate (3); The detection plate (4) is movably arranged above the steel belt groove (2), and in a normal state, the detection plate (4) is arranged parallel to the steel belt limiting plate (3); A plurality of detection switches (5) are arranged above the detection plate (4), and in a normal state, the detection switches (5) are turned on, and when the posture or position of the detection plate (4) changes, at least one of the detection switches (5) is turned off; The detection plate (4) is a rectangular plate, the number of the detection switches (5) is at least four, and the detection switches (5) are arranged at four corners of the detection plate (4); The bottom of the detection plate (4) on the side away from the moving direction of the steel strip body (1) below it is bent upward and is in an arc shape; the distance between the detection plate (4) and the steel strip limiting plate (3) is greater than the thickness of the steel strip; The steel belt groove (2) comprises an inclined section (7) and a horizontal section (8), the lower end of the inclined section (7) being connected to one end of the horizontal section (8); the steel belt body (1) moves from the higher end of the inclined section (7) to the lower end and enters the horizontal section (8); The detection plate (4) is arranged at the lower end of the inclined section (7) and / or at an end of the horizontal section (8) away from the inclined section (7).

2. The steel belt slag conveyor protection device according to claim 1 is characterized in that: It also includes a fixing rod (6), wherein the number of the fixing rods (6) is multiple; The fixing rods (6) are fixedly arranged and located on both sides of the steel belt groove (2); The detection plate (4) is movably connected to the fixing rod (6); and the detection switch (5) is fixedly mounted on the fixing rod (6).

3. The steel belt slag conveyor protection device according to claim 1 is characterized in that: Also includes a plurality of connecting plates (9); The number of the steel belt bodies (1) is two, and the connecting plate (9) is arranged between the two steel belt bodies (1) and is fixedly connected to the two steel belt bodies (1) respectively.

4. The steel belt slag conveyor protection device according to claim 1 is characterized in that: The detection switch (5) is a normally closed switch, and a plurality of the detection switches (5) are connected in series in an electric circuit (10), and an electromagnetic coil (11) is connected in series in the electric circuit (10); the electromagnetic coil (11) is used to control an electromagnetic switch (12) connected in series to the steel belt slag conveyor; when all the detection switches (5) are turned on, the electromagnetic coil (11) controls the electromagnetic switch (12) to be turned on.

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