Chain breakage detection device for scraper conveyor

Abstract

The utility model discloses a scraper conveyor chain breakage detection device which comprises a rack, a driving wheel, a tensioning wheel, a scraper chain, a controller, a plurality of speed sensors, a plurality of proximity sensors, a plurality of first prompters and a plurality of second prompters. The proximity sensor detects the chain breaking position of the scraper chain of the bearing section, the input end of the controller is connected with the output end of the speed detector and the output end of the proximity sensor at the same time, the output end of the controller is connected with the first prompter and the second prompter at the same time, and therefore whether the chain is broken or not can be detected, and the chain breaking position can be prompted; convenience is provided for maintenance work, time is saved, and working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of coal mine fully mechanized scraper conveyor, specifically relates to a scraper conveyor chain break detection device. BACKGROUND

[0002] The scraper conveyor is not affected by the blockiness and humidity of goods, the machine height is small, loading is convenient, length adjustment is convenient, and the scraper conveyor is suitable for coal mining faces and is important transport equipment of fully mechanized working face, and bears coal transportation of the working face, and the annular scraper chain is tightly sleeved on the driving wheel and the tensioning wheel, the driving wheel is driven to rotate by the motor, and the scraper chain is driven to rotate in a cycle during the rotation process, so that coal transportation is realized, but due to the influence of coal, foreign matter blockage and scraper chain tensioning degree of the working face, the scraper conveyor often appears chain breakage fault during transportation, which seriously restricts the safe and efficient recovery of the working face.

[0003] The utility model discloses a kind of scraper machine chain break and blockage early warning protection systems, including tail wheel, speed measuring device and early warning protection device;The tail wheel is used to assist the chain movement of scraper machine;The speed measuring device is used to detect the rotary motion of the tail wheel;The early warning protection device is electrically connected with the speed measuring device, for when the speed measuring device detects that the tail wheel rotation speed reduces or stops rotating, alarm is sent and the scraper machine is controlled to stop running, however, the chain break detected by being arranged speed measuring device in tail wheel cannot find the position of chain break in time, maintenance personnel want to check chain break position one by one, and efficiency is lower. UTILITY MODEL CONTENT

[0004] The utility model provides a kind of scraper conveyor chain break detection device, which can solve the above technical problems.

[0005] The utility model realizes by the following technical scheme:

[0006] A kind of scraper conveyor chain break detection device, including rack, driving wheel, tensioning wheel and scraper chain, the driving wheel and tensioning wheel are spaced apart on rack along the movement direction of the scraper chain, the scraper chain is tightly sleeved on the driving wheel and the tensioning wheel, further include controller, multiple speed sensors, multiple proximity sensors, multiple first prompter, multiple second prompter and multiple shafts, multiple shafts are horizontally spaced apart on the rack along the movement direction of the scraper chain and between the driving wheel and the tensioning wheel, first idler wheel and second idler wheel are rotatably connected on the shaft, the first idler wheel and the second idler wheel support the scraper chain of empty load section simultaneously so that it runs smoothly;

[0007] The speed sensor detects the broken chain position of the scraper chain of the empty load section, one first prompter is arranged on the side of one speed sensor, the proximity sensor is arranged in the lower part of the frame in the movement direction of the scraper chain to detect the broken chain position of the scraper chain of the load section, one second prompter is arranged on the side of one proximity sensor, the input end of the controller is connected with the output end of the speed sensor and the proximity sensor, and the output end of the controller is connected with the first prompter and the second prompter.

[0008] Further, the detection distance of the proximity sensor is within 60mm.

[0009] Further, the proximity sensor is a non-buried electric induction type.

[0010] Further, the input end of the proximity sensor is covered with a protective plate, and the protective plate is provided with a plurality of through holes allowing the induction magnetic field to pass through.

[0011] Further, a proximity sensor protective cover is further included, and the protective cover covers the part of the proximity sensor outside the frame.

[0012] Further, the first prompter and the second prompter each include a voice prompter and an indicator light.

[0013] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0014] A scraper conveyor broken chain detection device, including controller, a plurality of speed sensors, a plurality of proximity sensors, a plurality of first prompters, a plurality of second prompters and a plurality of rotating shafts, when the scraper conveyor is conveying materials, the speed sensor detects the scraper chain of the empty load section in real time, when the chain of the first supporting roller or the second supporting roller breaks, the scraper chain on this side cannot provide friction force for the supporting roller, then the rotating speed of the supporting roller on this side will change, then the speed sensor on the rotating shaft detects the change of the rotating speed of the supporting roller on this side and transmits the signal to the controller, the controller transmits the signal to the first prompter corresponding to the degree sensor through the output end, and the broken chain position is prompted, the proximity sensor detects the scraper chain of the load section in real time, when the scraper conveyor is normally running, the scraper on the scraper chain will pass the position of the proximity sensor at a certain frequency, when the scraper chain on one side breaks, the movement frequency of the scraper will change, the proximity sensor can detect the change and transmit the signal to the controller, the controller transmits the signal to the second prompter corresponding to the proximity sensor at the position through the output end, and the broken chain position is prompted, so the setting not only can detect the broken chain, but also can prompt the broken chain position, provides the convenience for the maintenance work, saves time and improves work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0015] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present application and are incorporated in and constitute a part of this application, illustrate embodiments of the present application and together with the description serve to explain the principles of the present application. In the drawings:

[0016] Fig. 1 FIG. 1 is a structural schematic view of a chain breakage detection device of a scraper conveyor according to an embodiment of the present application;

[0017] Fig. 2 FIG. 2 is an installation schematic view of a proximity sensor of the chain breakage detection device of the scraper conveyor according to the embodiment of the present application.

[0018] Markings in the drawings and corresponding names of parts:

[0019] 10 - rack, 11 - drive wheel, 12 - tensioning wheel, 13 - scraper chain, 14 - controller, 15 - speed sensor, 16 - proximity sensor, 161 - protective plate, 1611 - through hole, 162 - mounting sleeve, 163 - protective cover, 17 - first indicator, 18 - second indicator, 19 - rotating shaft, 191 - first idler, 192 - second idler. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application will be further described in detail below with embodiments and drawings, the schematic embodiments of the present application and the description thereof are only used to explain the present application, and do not limit the present application.

[0021] EMBODIMENT

[0022] Please refer to Figs. 1-2 A chain breakage detection device of a scraper conveyor, comprising a rack 10, a drive wheel 11 (not shown in the figure), a tensioning wheel 12 (not shown in the figure) and a scraper chain 13, the drive wheel 11 and the tensioning wheel 12 are arranged on the rack 10 along the movement direction of the scraper chain 13, the scraper chain 13 is tightly sleeved on the drive wheel 11 and the tensioning wheel 12, further comprising a controller 14, a plurality of speed sensors 15, a plurality of proximity sensors 16, a plurality of first indicators 17, a plurality of second indicators 18 and a plurality of rotating shafts 19, the plurality of rotating shafts 19 are arranged on the rack 10 along the movement direction of the scraper chain 13 and horizontally spaced between the drive wheel 11 and the tensioning wheel 12, the rotating shaft 19 is rotatably connected with a first idler 191 and a second idler 192, the first idler 191 and the second idler 192 simultaneously support the scraper chain 13 of the empty load section to make it run smoothly.

[0023] The speed sensor 15 detects the broken chain position of the scraper chain 13 in the empty section, for example, the two ends of the rotating shaft 19 are connected with the speed sensor 15 respectively, and a first prompter 17 is arranged on the rack 10 at one side of one speed sensor 15.

[0024] The proximity sensor 16 is arranged in the lower part of the rack 10 along the movement direction of the scraper chain 13, and detects the broken chain position of the scraper chain 13 in the loaded section, and a second prompter 18 is arranged on the rack 10 at one side of one proximity sensor 16, for example, the detection distance of the proximity sensor 16 is 60mm, preferably, the detection distance of the proximity sensor 16 is 60mm, and the scraper chain 13 exists in the case of left and right swing in the conveying groove, a longer detection distance can ensure that the proximity sensor 16 can stably detect the existence of the scraper even in the normal swing range, so as to avoid the false judgment caused by the swing of the scraper. For example, the proximity sensor 16 can be a non-buried inductive type, if a buried proximity switch is used, the sensing distance will be greatly reduced, resulting in insufficient sensing distance and unstable detection, for example, the input end of the proximity sensor 16 is covered with a protective plate 161 to prevent the abrasion of the detection end of the proximity sensor 16 by the material in the loaded section, thereby affecting the detection, the protective plate 161 is provided with a plurality of through holes 1611 allowing the sensing magnetic field to pass through, thereby detecting the movement of the scraper, for example, the protective plate 161 is made of a high molecular material, which has good wear resistance and high impact strength, and can maintain a long service life in a high friction environment and withstand a large impact force without breaking. The proximity sensor 16 is locked on its mounting sleeve 162 by a nut, the mounting sleeve 162 is made of stainless steel and has an inner diameter greater than 2 times the sensing distance, i.e. 120mm, which can shield the influence of the surrounding metal material on the proximity sensor 16, and the mounting sleeve 162 of the proximity sensor 16 is connected with a protective cover 163 of the proximity sensor 16, the protective cover 163 covers the part of the proximity sensor 16 located outside the rack 10, for example, the protective cover 163 is connected to the mounting sleeve 162 by bolts and silica gel sealing pads, the cable of the proximity sensor 16 passes through a waterproof gland to protect the proximity sensor 16 from external impact and prevent water and dust.

[0025] The input end of the controller 14 is connected with the output ends of the plurality of speed sensors and the plurality of proximity sensors 16, and the output end of the controller 14 is connected with the plurality of first prompters 17 and the plurality of second prompters 18, for example, the first prompter 17 and the second prompter 18 each include a voice prompter and an indicator.

[0026] A scraper conveyor chain breakage detection device, comprising a controller 14, a plurality of speed sensors 15, a plurality of proximity sensors 16, a plurality of first indicators 17, a plurality of second indicators 18 and a plurality of rotating shafts 19, when the scraper conveyor is conveying materials, the speed sensor 15 detects the scraper chain 13 of the empty section in real time, when the chain supported by the first idler 191 or the second idler 192 breaks, the scraper chain 13 on that side cannot provide friction to the idler supporting it, then the rotating speed of the idler supporting that side will change, then the speed sensor on that side of the rotating shaft 19 detects the change of the speed of the idler on that side and transmits the signal to the controller 14, the controller 14 transmits to the first indicator 17 corresponding to the speed sensor through the output end, prompting the chain breakage position; the proximity sensor 16 detects the scraper chain 13 of the bearing section in real time, when the scraper conveyor is running normally, the scraper on the scraper chain 13 will pass the position of the proximity sensor 16 at a certain frequency, when the scraper chain 13 on one side breaks, the movement frequency of the scraper will change, the proximity sensor 16 can detect this change and transmit the signal to the controller 14, the controller 14 transmits to the second indicator 18 corresponding to the proximity sensor 16 at that position through the output end, prompting the chain breakage position, so the setting not only can detect the chain breakage, but also can prompt the chain breakage position, which provides convenience for maintenance work, saves time and improves work efficiency.

[0027] The above specific embodiments further specifically describe the purpose, technical scheme and advantages of the utility model, and it should be understood that the above description is only a specific embodiment of the utility model and does not limit the protection scope of the utility model, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A chain breakage detection device for an apron conveyor, comprising a frame, a drive wheel, a tension wheel and an apron chain, the drive wheel and the tension wheel being disposed on the frame in a direction of movement of the apron chain, the apron chain being simultaneously tightly wound around the drive wheel and the tension wheel, characterized in that, The controller, a plurality of speed sensors, a plurality of proximity sensors, a plurality of first indicators, a plurality of second indicators and a plurality of shafts are further included, the plurality of shafts are horizontally spaced apart along the movement direction of the squeegee chain and located between the driving wheel and the tensioning wheel on the frame, the first idler and the second idler are rotatably connected on the shaft, and the first idler and the second idier simultaneously support the squeegee chain in the empty load section to make it run smoothly; The speed sensor detects the broken chain position of the squeegee chain in the empty load section, one first indicator is arranged on the frame at one side of the speed sensor, the proximity sensor is arranged on the lower part of the frame and spaced apart along the movement direction of the squeegee chain to detect the broken chain position of the squeegee chain in the load section, one second indicator is arranged on the frame at one side of the proximity sensor, the input end of the controller is connected with the output end of the plurality of speed sensors and the plurality of proximity sensors, and the output end of the controller is connected with the plurality of first indicators and the plurality of second indicators.

2. A chain break detection device for a flight conveyor as claimed in claim 1, characterized in that The detection distance of the proximity sensor is within 60 mm.

3. A chain break detection device for a flight conveyor as claimed in claim 2, characterised in that, The proximity sensor is a non-buried electric induction type.

4. A scrapper conveyor chain break detection device according to claim 3, characterized in that, The detection end of the proximity sensor is covered with a protective plate, and the protective plate is provided with a plurality of through holes allowing the induction magnetic field to pass through.

5. A chain break detection device for a flight conveyor as defined in claim 1, wherein A proximity sensor protective cover is further included, and the protective cover covers the part of the proximity sensor located outside the frame.

6. A chain breakage detection device for a flight conveyor according to any one of claims 1 to 5, characterized in that The first indicator and the second indicator both include a voice indicator and an indicator light.

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