CA3014560A1 - Self-detection device for middle trough of scraper conveyor and detection method - Google Patents
Self-detection device for middle trough of scraper conveyor and detection method Download PDFInfo
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- CA3014560A1 CA3014560A1 CA3014560A CA3014560A CA3014560A1 CA 3014560 A1 CA3014560 A1 CA 3014560A1 CA 3014560 A CA3014560 A CA 3014560A CA 3014560 A CA3014560 A CA 3014560A CA 3014560 A1 CA3014560 A1 CA 3014560A1
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- scraper
- conveyor
- liner
- frame
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G19/00—Conveyors comprising an impeller or a series of impellers carried by an endless traction element and arranged to move articles or materials over a supporting surface or underlying material, e.g. endless scraper conveyors
- B65G19/18—Details
- B65G19/28—Troughs, channels, or conduits
- B65G19/30—Troughs, channels, or conduits with supporting surface modified to facilitate movement of loads, e.g. friction reducing devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
Abstract
A self-detection device for a middle trough of a scraper conveyor and a detection method is disclosed. The device comprises a frame, a baffle hoist conveyor. a horizontal conveyor, a loading hopper, an unloading hopper, and a sliding friction mechanism. A liner and an eccentric motor are mounted in the sliding friction mechanism. The eccentric motor is slidably connected to a scraper through a slide bar.
The scraper is disposed on the liner, and an impact force sensor is disposed on the scraper. A pull-pressure sensor is mounted on the slide bar. The self-detection device for a middle trough can simulate the wear behavior from impact and friction between a scraper and a middle trough of a scraper conveyor, and can measure in real time an impact force applied to the scraper as materials fall and a frictional force between the scraper and the liner and a friction factor.
The scraper is disposed on the liner, and an impact force sensor is disposed on the scraper. A pull-pressure sensor is mounted on the slide bar. The self-detection device for a middle trough can simulate the wear behavior from impact and friction between a scraper and a middle trough of a scraper conveyor, and can measure in real time an impact force applied to the scraper as materials fall and a frictional force between the scraper and the liner and a friction factor.
Description
SELF-DETECTION DEVICE FOR MIDDLE TROUGH OF SCRAPER
CONVEYOR AND DETECTION METHOD
BACKGROUND OF THE INVENTION
Technical Field The present invention relates to the field of detection for a middle trough of a scraper conveyor, and in particular, to a self-detection device for a middle trough of a scraper conveyor and a detection method.
Background A scraper conveyor is mainly formed of a motor, a hydraulic coupling, a reducer, a sprocket assembly, a middle trough, a scraper, and a high-strength round-link chain.
The working capability, reliability, and intelligence level of scraper conveyors directly affect the safety and production efficiency of modern coal mines. A
middle trough is the most critical assembly of a scraper conveyor, and is a primary power-consuming assembly of the scraper conveyor. The integrity of the middle trough greatly determines the normal working of the scraper conveyor. A middle trough supports coal lumps, a scraper chain, and the weight and working resistance of other working equipment and bears very complex load. Therefore, a middle trough needs to have sufficient strength, rigidity, and wear resistance to ensure continuous operation of a scraper conveyor and further ensure the normal operation of a transportation system of a coal working face.
Coal mine machinery is subject to a very severe wear phenomenon, which results in occasional equipment failures and safety accidents and causes considerable economic loss. For a scraper conveyor, the wear of a middle trough is a primary manifestation of a failure of the scraper conveyor and is a major cause of a failure of the scraper conveyor. Targeted theoretical and application researches are made on the friction and wear of middle troughs of scraper conveyors will definitely help reduce manufacturing costs for scraper conveyors, reduce severe accidents of scraper conveyors, extend the service life, reduce operation and maintenance costs, or produce other effects. Therefore, it is necessary to invent a self-detection device for a middle trough of a scraper conveyor that enables realistic and comprehensive simulation of actual working conditions of impact, friction, and wear.
SUMMARY OF THE INVENTION
In view of the deficiencies in the background, the objective of the present invention is to provide a self-detection device and method for a middle trough of a scraper conveyor that has a simple structure and safe and convenient operations and enables realistic and comprehensive simulation of actual working conditions of impact, friction, and wear.
The technical problem of the present invention is resolved by using the following technical solution:
A self-detection device for a middle trough of a scraper conveyor includes a frame (18), a baffle hoist conveyor (2), a horizontal conveyor (17), a loading hopper (1), an unloading hopper (5), and a sliding friction mechanism being disposed on the frame (18), where the loading hopper (1) and the unloading hopper (5) are both fixedly disposed on the frame (18), and the loading hopper (I) is located above the unloading hopper (5);
the baffle hoist conveyor (2) is supported by a first support (4) and disposed in the frame (18), a first variable-speed servo motor (22) for driving the baffle hoist conveyor (2) is mounted on the first support (4), a starting end of the baffle hoist conveyor (2) is connected to an unloading port of the unloading hopper (5), and a finishing end of the baffle hoist conveyor (2) is joined to a loading port of the loading hopper (1); and the horizontal conveyor (17) is supported by a second support (3) and disposed in the frame (18), a second variable-speed servo motor (29) for driving the horizontal conveyor (17) is mounted on the second support (3), a starting end of the horizontal conveyor (17) is connected to an unloading port of the loading hopper (1), a finishing end of the horizontal conveyor (17) is located above the sliding friction mechanism, and the sliding friction mechanism is located at an upper end of the unloading hopper (5);
the sliding friction mechanism includes a liner (8), the liner (8) is fixedly connected to the frame (18), the liner (8) is located above the unloading hopper (5), the liner (8) is also located below the finishing end of the horizontal conveyor (17),
CONVEYOR AND DETECTION METHOD
BACKGROUND OF THE INVENTION
Technical Field The present invention relates to the field of detection for a middle trough of a scraper conveyor, and in particular, to a self-detection device for a middle trough of a scraper conveyor and a detection method.
Background A scraper conveyor is mainly formed of a motor, a hydraulic coupling, a reducer, a sprocket assembly, a middle trough, a scraper, and a high-strength round-link chain.
The working capability, reliability, and intelligence level of scraper conveyors directly affect the safety and production efficiency of modern coal mines. A
middle trough is the most critical assembly of a scraper conveyor, and is a primary power-consuming assembly of the scraper conveyor. The integrity of the middle trough greatly determines the normal working of the scraper conveyor. A middle trough supports coal lumps, a scraper chain, and the weight and working resistance of other working equipment and bears very complex load. Therefore, a middle trough needs to have sufficient strength, rigidity, and wear resistance to ensure continuous operation of a scraper conveyor and further ensure the normal operation of a transportation system of a coal working face.
Coal mine machinery is subject to a very severe wear phenomenon, which results in occasional equipment failures and safety accidents and causes considerable economic loss. For a scraper conveyor, the wear of a middle trough is a primary manifestation of a failure of the scraper conveyor and is a major cause of a failure of the scraper conveyor. Targeted theoretical and application researches are made on the friction and wear of middle troughs of scraper conveyors will definitely help reduce manufacturing costs for scraper conveyors, reduce severe accidents of scraper conveyors, extend the service life, reduce operation and maintenance costs, or produce other effects. Therefore, it is necessary to invent a self-detection device for a middle trough of a scraper conveyor that enables realistic and comprehensive simulation of actual working conditions of impact, friction, and wear.
SUMMARY OF THE INVENTION
In view of the deficiencies in the background, the objective of the present invention is to provide a self-detection device and method for a middle trough of a scraper conveyor that has a simple structure and safe and convenient operations and enables realistic and comprehensive simulation of actual working conditions of impact, friction, and wear.
The technical problem of the present invention is resolved by using the following technical solution:
A self-detection device for a middle trough of a scraper conveyor includes a frame (18), a baffle hoist conveyor (2), a horizontal conveyor (17), a loading hopper (1), an unloading hopper (5), and a sliding friction mechanism being disposed on the frame (18), where the loading hopper (1) and the unloading hopper (5) are both fixedly disposed on the frame (18), and the loading hopper (I) is located above the unloading hopper (5);
the baffle hoist conveyor (2) is supported by a first support (4) and disposed in the frame (18), a first variable-speed servo motor (22) for driving the baffle hoist conveyor (2) is mounted on the first support (4), a starting end of the baffle hoist conveyor (2) is connected to an unloading port of the unloading hopper (5), and a finishing end of the baffle hoist conveyor (2) is joined to a loading port of the loading hopper (1); and the horizontal conveyor (17) is supported by a second support (3) and disposed in the frame (18), a second variable-speed servo motor (29) for driving the horizontal conveyor (17) is mounted on the second support (3), a starting end of the horizontal conveyor (17) is connected to an unloading port of the loading hopper (1), a finishing end of the horizontal conveyor (17) is located above the sliding friction mechanism, and the sliding friction mechanism is located at an upper end of the unloading hopper (5);
the sliding friction mechanism includes a liner (8), the liner (8) is fixedly connected to the frame (18), the liner (8) is located above the unloading hopper (5), the liner (8) is also located below the finishing end of the horizontal conveyor (17),
2 the sliding friction mechanism further includes a slider-crank mechanism, the slider-crank mechanism includes a third variable-speed servo motor (16), an eccentric disk (15), a connecting rod (14), and an outer frame (37), the outer frame (37) is fixedly connected to the frame (18), and the third variable-speed servo motor (16), the eccentric disk (15), and the connecting rod (14) are disposed on the outer frame (37);
the center of the eccentric disk (15) is fixedly connected to an output shaft of the third variable-speed servo motor (16), a bolt hole is opened on the eccentric disk (15), an end of the connecting rod (14) is hinged to the eccentric disk (5) through a bolt, a first cylindrical slide bar (13) is hinged to the other end of the connecting rod (14), a second cylindrical slide bar (10) is connected to an end of the first cylindrical slide bar (13) away from the connecting rod (14), and a pull-pressure sensor (12) is mounted between the first cylindrical slide bar (13) and the second cylindrical slide bar (10); and a scraper (6) is fixedly connected to the second cylindrical slide bar (10), the scraper (6) is located on the liner (8), a scraper test block (39) is disposed at a bottom end of the scraper (6) through a bolt, an impact force sensor (7) is disposed at an upper end of the scraper (6), and an impact plate (38) is disposed at an upper end of the impact force sensor (7).
Further. right-angle connecting grooves (19) are welded at two ends of both the loading hopper (1) and the unloading hopper (5), and the right-angle connecting grooves (19) are fixed on the frame (18) through a bolt.
Further, each of the first support (4) and the second support (3) includes a base and a support rod, the support rod is vertically fixed on the base, a lead screw (27) and a rotary nut (28) for adjusting the height of the support rod are mounted on the support rod, and the lead screw (27) passes through the rotary nut (28).
Further, the liner (8) is horizontally mounted on several short rods (32), the short rods are fixedly connected to the frame (18), and the short rods are horizontally disposed; and a filter screen (9) is disposed below the liner (8), and the filter screen (9) is welded at an opening of the unloading hopper (5).
Further, a first slider (25) is fixedly mounted on the outer frame (37), and the first cylindrical slide bar (13) is slidably connected to the first slider (25); and a second slider (11) is fixedly mounted on the frame (18), and the second cylindrical slide bar (10) is slidably connected to the second slider (11).
the center of the eccentric disk (15) is fixedly connected to an output shaft of the third variable-speed servo motor (16), a bolt hole is opened on the eccentric disk (15), an end of the connecting rod (14) is hinged to the eccentric disk (5) through a bolt, a first cylindrical slide bar (13) is hinged to the other end of the connecting rod (14), a second cylindrical slide bar (10) is connected to an end of the first cylindrical slide bar (13) away from the connecting rod (14), and a pull-pressure sensor (12) is mounted between the first cylindrical slide bar (13) and the second cylindrical slide bar (10); and a scraper (6) is fixedly connected to the second cylindrical slide bar (10), the scraper (6) is located on the liner (8), a scraper test block (39) is disposed at a bottom end of the scraper (6) through a bolt, an impact force sensor (7) is disposed at an upper end of the scraper (6), and an impact plate (38) is disposed at an upper end of the impact force sensor (7).
Further. right-angle connecting grooves (19) are welded at two ends of both the loading hopper (1) and the unloading hopper (5), and the right-angle connecting grooves (19) are fixed on the frame (18) through a bolt.
Further, each of the first support (4) and the second support (3) includes a base and a support rod, the support rod is vertically fixed on the base, a lead screw (27) and a rotary nut (28) for adjusting the height of the support rod are mounted on the support rod, and the lead screw (27) passes through the rotary nut (28).
Further, the liner (8) is horizontally mounted on several short rods (32), the short rods are fixedly connected to the frame (18), and the short rods are horizontally disposed; and a filter screen (9) is disposed below the liner (8), and the filter screen (9) is welded at an opening of the unloading hopper (5).
Further, a first slider (25) is fixedly mounted on the outer frame (37), and the first cylindrical slide bar (13) is slidably connected to the first slider (25); and a second slider (11) is fixedly mounted on the frame (18), and the second cylindrical slide bar (10) is slidably connected to the second slider (11).
3 Further, two impact force sensors (7) are symmetrically disposed on the scraper (6).
Further, a groove is opened at a lower end of the scraper (6), threaded holes are opened at two ends of the groove, the scraper test block (39) is disposed in the groove, and the scraper test block (39) is clamped by using nuts passing through the threaded holes.
A detection method of a self-detection device for a middle trough of a scraper conveyor includes the following steps:
(1) measuring the weight of a scraper test block (39) and the weight of a liner (8) by using a balance before experiment;
(2) mounting the liner (8) horizontally and fixedly on short rods (32), and mounting the scraper test block (39) in a groove of a scraper (6) and fixing the scraper test block (39):
(3) starting a first variable-speed servo motor (22) and a second variable-speed servo motor (29), and adjusting frequency of a frequency converter to adjust operation speeds of a baffle hoist conveyor (2) and a horizontal conveyor (17);
Further, a groove is opened at a lower end of the scraper (6), threaded holes are opened at two ends of the groove, the scraper test block (39) is disposed in the groove, and the scraper test block (39) is clamped by using nuts passing through the threaded holes.
A detection method of a self-detection device for a middle trough of a scraper conveyor includes the following steps:
(1) measuring the weight of a scraper test block (39) and the weight of a liner (8) by using a balance before experiment;
(2) mounting the liner (8) horizontally and fixedly on short rods (32), and mounting the scraper test block (39) in a groove of a scraper (6) and fixing the scraper test block (39):
(3) starting a first variable-speed servo motor (22) and a second variable-speed servo motor (29), and adjusting frequency of a frequency converter to adjust operation speeds of a baffle hoist conveyor (2) and a horizontal conveyor (17);
(4) adding sufficient impact coal to a loading hopper (1), starting a third variable-speed servo motor (16) to enable an entire slider-crank mechanism to operate, to complete simulation of a friction motion between scraper (6) and the liner (8) under impact conditions, measuring a frictional force during impact and friction by using a pull-pressure sensor (12), and measuring an impact force during impact and friction by using an impact force sensor (7); and
(5) stopping the variable-speed servo motors after parameter measurement is completed, ending the test, collecting test coal, and measuring the weight of the scraper test block (39) and the weight of the liner (8) respectively by using the balance after experiment, to calculate a wear rate after impact and friction motions.
The beneficial effects of the present invention are as follows:
The present invention can simulate and measure the frictional behavior between a scraper and a middle trough of a scraper conveyor in a working condition of impact, and the main advantages are as follows:
(1) The frictional behavior of the scraper and the middle trough of the scraper conveyor in an actual working condition of impact can be simulated, and an impact force of coal on the scraper and a frictional force between the scraper and the middle trough can be measured in real time.
(2) The impact load and impact angle of coal and the sliding speed of the scraper can be adjusted, to implement friction detection with varied angles, load, and speeds.
(3) The structure is simple, the device has a suitable size, and the mounting is convenient.
(4) Materials can be continuously recycled, and continuous impact loading of materials can be implemented.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. I is a schematic perspective view of the structure of a device according to the present invention;
FIG. 2 is a schematic front view of the structure of a device according to the present invention;
FIG. 3 is a schematic left view of the structure of a device according to the present invention;
FIG. 4 is a schematic top view of the structure of a device according to the present invention;
FIG. 5 is a schematic view of mounting of a scraper, a scraper test block, and an impact force sensor of a device according to the present invention: and FIG. 6 is a schematic sectional view of a scraper in a front-view direction of a device according to the present invention.
Description of reference numerals:
-loading hopper, 2-baffle hoist conveyor, 3-second support, 4-first support, 5-unloading hopper, 6-scraper, 7-impact force sensor, 8-liner, 9-filter screen.
10-second cylindrical slide bar, 11-second slider. 12-pull-pressure sensor, 13-first cylindrical slide bar, 14-connecting rod, 15-eccentric disk, 16-third variable-speed servo motor, 17-horizontal conveyor, 18-frame, 19-right-angle connecting groove, 22-first variable-speed servo motor, 24-beam, 25-first slider. 27-lead screw.
28-rotary nut, 29-second variable-speed servo motor, 31-baffle-hoist-conveyor baffle, 32-short rod, 33-short beam, 34-pillar, 37-outer frame, 38-impact plate, and 39-scraper test block.
DETAILED DESCRIPTION OF THE INVENTION
The present invention is further described below in detail with reference to specific embodiments. The following embodiments are descriptive rather than limitative, and cannot be used to limit the protection scope of the present invention.
A person skilled in the art may understand that unless otherwise defined, all terms used herein have meanings same as those generally understood by a person of ordinary skill in the art of the present invention. It should be further understood that terms such as those defined in general dictionaries should be understood to have meanings same as those in the context of the prior art, and unless similarly defined herein, ideal or formal meanings are not used.
As shown in FIG. 1 to FIG. 4, a self-detection device for a middle trough of a scraper conveyor (and a detection method) includes a frame 18. A baffle hoist conveyor 2, a horizontal conveyor 17, a loading hopper 1, an unloading hopper 5, and a sliding friction mechanism are disposed on the frame 18. The frame 18 of the present invention is a cuboidal frame mainly formed by welding eight pillars 34, four beams 24, and four short beams 33. The loading hopper 1 and the unloading hopper 5 are both fixedly disposed on the frame 18. The loading hopper 1 is located at an upper right end of the frame 18. and the unloading hopper 5 is located at a lower left end of the frame 18. Right-angle connecting grooves 19 are welded at two ends of both the loading hopper 1 and the unloading hopper 5, and the right-angle connecting grooves 19 are fixed on the frame 18 through a bolt.
The baffle hoist conveyor 2 is supported by a first support 4 and disposed in the frame 18, a first variable-speed servo motor 22 for driving the baffle hoist conveyor 2 is mounted on the first support 4, the first variable-speed servo motor 22 is fixed on the first support 4 through a bolt, an active drum of the baffle hoist conveyor 2 is driven by using a transmission belt to rotate, and frequency of a frequency converter is adjusted to adjust a rotational speed of the first variable-speed servo motor 22, to further adjust an operation speed of the baffle hoist conveyor 2. A starting end of the
The beneficial effects of the present invention are as follows:
The present invention can simulate and measure the frictional behavior between a scraper and a middle trough of a scraper conveyor in a working condition of impact, and the main advantages are as follows:
(1) The frictional behavior of the scraper and the middle trough of the scraper conveyor in an actual working condition of impact can be simulated, and an impact force of coal on the scraper and a frictional force between the scraper and the middle trough can be measured in real time.
(2) The impact load and impact angle of coal and the sliding speed of the scraper can be adjusted, to implement friction detection with varied angles, load, and speeds.
(3) The structure is simple, the device has a suitable size, and the mounting is convenient.
(4) Materials can be continuously recycled, and continuous impact loading of materials can be implemented.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. I is a schematic perspective view of the structure of a device according to the present invention;
FIG. 2 is a schematic front view of the structure of a device according to the present invention;
FIG. 3 is a schematic left view of the structure of a device according to the present invention;
FIG. 4 is a schematic top view of the structure of a device according to the present invention;
FIG. 5 is a schematic view of mounting of a scraper, a scraper test block, and an impact force sensor of a device according to the present invention: and FIG. 6 is a schematic sectional view of a scraper in a front-view direction of a device according to the present invention.
Description of reference numerals:
-loading hopper, 2-baffle hoist conveyor, 3-second support, 4-first support, 5-unloading hopper, 6-scraper, 7-impact force sensor, 8-liner, 9-filter screen.
10-second cylindrical slide bar, 11-second slider. 12-pull-pressure sensor, 13-first cylindrical slide bar, 14-connecting rod, 15-eccentric disk, 16-third variable-speed servo motor, 17-horizontal conveyor, 18-frame, 19-right-angle connecting groove, 22-first variable-speed servo motor, 24-beam, 25-first slider. 27-lead screw.
28-rotary nut, 29-second variable-speed servo motor, 31-baffle-hoist-conveyor baffle, 32-short rod, 33-short beam, 34-pillar, 37-outer frame, 38-impact plate, and 39-scraper test block.
DETAILED DESCRIPTION OF THE INVENTION
The present invention is further described below in detail with reference to specific embodiments. The following embodiments are descriptive rather than limitative, and cannot be used to limit the protection scope of the present invention.
A person skilled in the art may understand that unless otherwise defined, all terms used herein have meanings same as those generally understood by a person of ordinary skill in the art of the present invention. It should be further understood that terms such as those defined in general dictionaries should be understood to have meanings same as those in the context of the prior art, and unless similarly defined herein, ideal or formal meanings are not used.
As shown in FIG. 1 to FIG. 4, a self-detection device for a middle trough of a scraper conveyor (and a detection method) includes a frame 18. A baffle hoist conveyor 2, a horizontal conveyor 17, a loading hopper 1, an unloading hopper 5, and a sliding friction mechanism are disposed on the frame 18. The frame 18 of the present invention is a cuboidal frame mainly formed by welding eight pillars 34, four beams 24, and four short beams 33. The loading hopper 1 and the unloading hopper 5 are both fixedly disposed on the frame 18. The loading hopper 1 is located at an upper right end of the frame 18. and the unloading hopper 5 is located at a lower left end of the frame 18. Right-angle connecting grooves 19 are welded at two ends of both the loading hopper 1 and the unloading hopper 5, and the right-angle connecting grooves 19 are fixed on the frame 18 through a bolt.
The baffle hoist conveyor 2 is supported by a first support 4 and disposed in the frame 18, a first variable-speed servo motor 22 for driving the baffle hoist conveyor 2 is mounted on the first support 4, the first variable-speed servo motor 22 is fixed on the first support 4 through a bolt, an active drum of the baffle hoist conveyor 2 is driven by using a transmission belt to rotate, and frequency of a frequency converter is adjusted to adjust a rotational speed of the first variable-speed servo motor 22, to further adjust an operation speed of the baffle hoist conveyor 2. A starting end of the
6 baffle hoist conveyor 2 is connected to an unloading port of the unloading hopper 5, and a finishing end of the baffle hoist conveyor 2 is joined to a loading port of the loading hopper 1. The horizontal conveyor 17 is supported by a second support 3 and disposed in the frame 18, a second variable-speed servo motor 29 for driving the horizontal conveyor 17 is mounted on the second support 3, the second variable-speed servo motor 29 is fixed on the second support 3 through a bolt, an active drum of the horizontal conveyor 17 is driven by using a transmission belt to rotate, and frequency of a frequency converter is adjusted to adjust a rotational speed of the second variable-speed servo motor 29, so as to adjust an operation speed of the horizontal conveyor 17 to control the amount of falling materials. The operation speeds of the baffle hoist conveyor 2 and the horizontal conveyor 17 need to match as much as possible. A starting end of the horizontal conveyor 17 is connected to an unloading port of the loading hopper 1, and a finishing end of the horizontal conveyor 17 is located above the sliding friction mechanism. Each of the first support 4 and the second support 3 includes a base and a support rod, the support rod is vertically fixed on the base, a lead screw 27 and a rotary nut 28 for adjusting the height of the support rod are mounted on the support rod, and the lead screw 27 passes through the rotary nut 28. A spiral lift mechanism formed by the lead screw 27 and the rotary nut 28 can flexibly adjust the height of the baffle hoist conveyor 2 or the horizontal conveyor 17.
The sliding friction mechanism includes a liner 8, and the liner 8 and a middle trough are made of the same material. The liner 8 is fixedly connected to the frame 18, the liner 8 is located above the unloading hopper 5, and the liner 8 is also located right below the finishing end of the horizontal conveyor 17. The liner 8 is horizontally and fixedly mounted on several short rods 32 through bolts, and the short rods 32 are fixedly connected to the frame 18 A filter screen 9 is disposed below the liner 8 and can filter out in real time tiny cinders crushed from impact, and the filter screen 9 is welded at an opening of the unloading, hopper 5.
The sliding friction mechanism further includes a slider-crank mechanism, and the slider-crank mechanism includes a third variable-speed servo motor 16, an eccentric disk 15, a connecting rod 14, and an outer frame 37. The outer frame 37 is fixedly connected to the frame 18, and the outer frame 37 is located outside the frame 18. The third variable-speed servo motor 16, the eccentric disk 15, and the connecting rod 14 are disposed on the outer frame 37, and the center of the eccentric disk 15 is
The sliding friction mechanism includes a liner 8, and the liner 8 and a middle trough are made of the same material. The liner 8 is fixedly connected to the frame 18, the liner 8 is located above the unloading hopper 5, and the liner 8 is also located right below the finishing end of the horizontal conveyor 17. The liner 8 is horizontally and fixedly mounted on several short rods 32 through bolts, and the short rods 32 are fixedly connected to the frame 18 A filter screen 9 is disposed below the liner 8 and can filter out in real time tiny cinders crushed from impact, and the filter screen 9 is welded at an opening of the unloading, hopper 5.
The sliding friction mechanism further includes a slider-crank mechanism, and the slider-crank mechanism includes a third variable-speed servo motor 16, an eccentric disk 15, a connecting rod 14, and an outer frame 37. The outer frame 37 is fixedly connected to the frame 18, and the outer frame 37 is located outside the frame 18. The third variable-speed servo motor 16, the eccentric disk 15, and the connecting rod 14 are disposed on the outer frame 37, and the center of the eccentric disk 15 is
7 fixedly- connected to an output shaft of the third variable-speed servo motor 16. A
plurality of bolt holes having different distances from the circle center are opened on the eccentric disk 15. By using the bolt holes, in one aspect, the connecting rod 14 and the eccentric disk 15 can be connected through bolts. and in another aspect, the distance by which a scraper 6 slides reciprocally can be adjusted. An end of the connecting rod 14 is hinged to the eccentric disk 15 through a bolt, and a first cylindrical slide bar 13 is connected to the other end of the connecting rod 14 in a hinged manner. to ensure that the members can rotate relatively in a vertical plane, so as to implement normal operation of the slider-crank mechanism. A second cylindrical slide bar 10 is connected to an end of the first cylindrical slide bar 13 away from the connecting rod 14, and a pull-pressure sensor 12 is mounted between the first cylindrical slide bar 13 and the second cylindrical slide bar 10.
The scraper 6 is fixedly connected to the second cylindrical slide bar 10. the scraper 6 is located on the liner 8, a scraper test block 39 is tightly fixed at a bottom end of the scraper 6 through a bolt, and a measured value of the pull-pressure sensor 12 is a frictional force generated when the scraper 6 and the liner 8 slide reciprocally.
Two impact force sensors 7 are symmetrically disposed at an upper end of the scraper 6, a measured value of each of the impact force sensors 7 is an impact force applied to the scraper 6. and an impact plate 38 is mounted on the impact force sensor 7 to protect the sensors from damage. A groove is disposed at a lower end of the scraper 6, threaded holes are opened at two ends of the groove, the scraper test block 39 is disposed in the groove, and the scraper test block 39 is clamped by using nuts passing through the threaded holes. The outer frame 37 is fixedly mounted on a first slider 25, and the first cylindrical slide bar 13 is slidably connected to the first slider 25. A
second slider 11 is fixedly mounted on the frame 18. and the second cylindrical slide bar 10 is slidablv connected to the second slider 11.
The eccentric disk 15 and the third variable-speed servo motor 16 form an eccentric motor. The eccentric motor, the connecting rod 14. and a slide bar component together form a slider-crank mechanism. The slide bar component includes the first cylindrical slide bar 13, the first slider 25, the pull-pressure sensor 12, the second slider 11. the second cylindrical slide bar 10, and the scraper 6.
A detection method of a self-detection device for a middle trough of a scraper conveyor includes the following steps:
plurality of bolt holes having different distances from the circle center are opened on the eccentric disk 15. By using the bolt holes, in one aspect, the connecting rod 14 and the eccentric disk 15 can be connected through bolts. and in another aspect, the distance by which a scraper 6 slides reciprocally can be adjusted. An end of the connecting rod 14 is hinged to the eccentric disk 15 through a bolt, and a first cylindrical slide bar 13 is connected to the other end of the connecting rod 14 in a hinged manner. to ensure that the members can rotate relatively in a vertical plane, so as to implement normal operation of the slider-crank mechanism. A second cylindrical slide bar 10 is connected to an end of the first cylindrical slide bar 13 away from the connecting rod 14, and a pull-pressure sensor 12 is mounted between the first cylindrical slide bar 13 and the second cylindrical slide bar 10.
The scraper 6 is fixedly connected to the second cylindrical slide bar 10. the scraper 6 is located on the liner 8, a scraper test block 39 is tightly fixed at a bottom end of the scraper 6 through a bolt, and a measured value of the pull-pressure sensor 12 is a frictional force generated when the scraper 6 and the liner 8 slide reciprocally.
Two impact force sensors 7 are symmetrically disposed at an upper end of the scraper 6, a measured value of each of the impact force sensors 7 is an impact force applied to the scraper 6. and an impact plate 38 is mounted on the impact force sensor 7 to protect the sensors from damage. A groove is disposed at a lower end of the scraper 6, threaded holes are opened at two ends of the groove, the scraper test block 39 is disposed in the groove, and the scraper test block 39 is clamped by using nuts passing through the threaded holes. The outer frame 37 is fixedly mounted on a first slider 25, and the first cylindrical slide bar 13 is slidably connected to the first slider 25. A
second slider 11 is fixedly mounted on the frame 18. and the second cylindrical slide bar 10 is slidablv connected to the second slider 11.
The eccentric disk 15 and the third variable-speed servo motor 16 form an eccentric motor. The eccentric motor, the connecting rod 14. and a slide bar component together form a slider-crank mechanism. The slide bar component includes the first cylindrical slide bar 13, the first slider 25, the pull-pressure sensor 12, the second slider 11. the second cylindrical slide bar 10, and the scraper 6.
A detection method of a self-detection device for a middle trough of a scraper conveyor includes the following steps:
8 (1) measuring the weight of a scraper test block 39 and the weight of a liner 8 by using a balance before experiment;
(2) mounting the liner 8 horizontally and fixedly on short rods 32, and mounting the scraper test block 39 in a groove of a scraper 6 and fixing the scraper test block 39;
(3) starting a first variable-speed servo motor 22 and a second variable-speed servo motor 29, and adjusting frequency of a frequency converter to adjust operation speeds of a baffle hoist conveyor 2 and a horizontal conveyor 17;
(4) adding sufficient impact coal to a loading hopper 1, starting a third variable-speed servo motor 16 to enable an entire slider-crank mechanism to operate, to complete simulation of a friction motion between the scraper 6 and the liner 8 under impact condition, measuring a frictional force during impact and friction by using a pull-pressure sensor 12, and measuring an impact force during impact and friction by using an impact force sensor 7; and (5) stopping the variable-speed servo motors after parameter measurement is completed, ending the test, collecting test coal, and measuring the weight of the scraper test block 39 and the weight of the liner 8 respectively by using the balance after experiment, to calculate a wear rate after impact and friction movements.
The foregoing descriptions are only preferred implementation manners of the present invention. It should be noted that for a person of ordinary skill in the art, several improvements and modifications may further be made without departing from the principle of the present invention. These improvements and modifications should also be deemed as falling within the protection scope of the present invention.
(2) mounting the liner 8 horizontally and fixedly on short rods 32, and mounting the scraper test block 39 in a groove of a scraper 6 and fixing the scraper test block 39;
(3) starting a first variable-speed servo motor 22 and a second variable-speed servo motor 29, and adjusting frequency of a frequency converter to adjust operation speeds of a baffle hoist conveyor 2 and a horizontal conveyor 17;
(4) adding sufficient impact coal to a loading hopper 1, starting a third variable-speed servo motor 16 to enable an entire slider-crank mechanism to operate, to complete simulation of a friction motion between the scraper 6 and the liner 8 under impact condition, measuring a frictional force during impact and friction by using a pull-pressure sensor 12, and measuring an impact force during impact and friction by using an impact force sensor 7; and (5) stopping the variable-speed servo motors after parameter measurement is completed, ending the test, collecting test coal, and measuring the weight of the scraper test block 39 and the weight of the liner 8 respectively by using the balance after experiment, to calculate a wear rate after impact and friction movements.
The foregoing descriptions are only preferred implementation manners of the present invention. It should be noted that for a person of ordinary skill in the art, several improvements and modifications may further be made without departing from the principle of the present invention. These improvements and modifications should also be deemed as falling within the protection scope of the present invention.
9
Claims (8)
1. A self-detection device for a middle trough of a scraper conveyor, comprising a frame, a baffle hoist conveyor, a horizontal conveyor, a loading hopper, an unloading hopper, and a sliding friction mechanism being disposed on the frame, wherein the loading hopper and the unloading hopper are both fixedly disposed on the frame, and the loading hopper is located above the unloading hopper; the baffle hoist conveyor is supported by a first support and disposed in the frame, a first variable-speed servo motor for driving the baffle hoist conveyor is mounted on the first support, a starting end of the baffle hoist conveyor is connected to an unloading port of the unloading hopper, and a finishing end of the baffle hoist conveyor is joined to a loading port of the loading hopper; and the horizontal conveyor is supported by a second support and disposed in the frame, a second variable-speed servo motor for driving the horizontal conveyor is mounted on the second support, a starting end of the horizontal conveyor is connected to an unloading port of the loading hopper, a finishing end of the horizontal conveyor is located above the sliding friction mechanism, and the sliding friction mechanism is located at an upper end of the unloading hopper; and the sliding friction mechanism comprises a liner, the liner is fixedly connected to the frame, the liner is located above the unloading hopper, the liner is also located below the finishing end of the horizontal conveyor, the sliding friction mechanism further comprises a slider-crank mechanism, the slider-crank mechanism comprises a third variable-speed servo motor, an eccentric disk, a connecting rod, and an outer frame, the outer frame is fixedly connected to the frame, and the third variable-speed servo motor, the eccentric disk, and the connecting rod are disposed on the outer frame; the center of the eccentric disk is fixedly connected to an output shaft of the third variable-speed servo motor, a bolt hole is opened on the eccentric disk, an end of the connecting rod is hinged to the eccentric disk through a bolt, a first cylindrical slide bar is hinged to the other end of the connecting rod, a second cylindrical slide bar is connected to an end of the first cylindrical slide bar away from the connecting rod, and a pull-pressure sensor is mounted between the first cylindrical slide bar and the second cylindrical slide bar; and a scraper is fixedly connected to the second cylindrical slide bar, the scraper is located on the liner, a scraper test block is disposed at a bottom end of the scraper through a bolt, an impact force is disposed at an upper end of the scraper, and an impact plate is disposed at an upper end of the impact force sensor.
2. The self-detection device for a middle trough of a scraper conveyor according to claim 1, wherein right-angle connecting grooves are welded at two ends of both the loading hopper and the unloading hopper, and the right-angle connecting grooves are fixed on the frame through a bolt.
3. The self-detection device for a middle trough of a scraper conveyor according to claim 1, wherein each of the first support and the second support comprises a base and a support rod, the support rod is vertically fixed on the base, a lead screw and a rotary nut for adjusting the height of the support rod are mounted on the support rod, and the lead screw passes through the rotary nut.
4. The self-detection device for a middle trough of a scraper conveyor according to claim 1, wherein the liner is horizontally mounted on several short rods, the short rods are fixedly connected to the frame, and the short rods are horizontally disposed; and a filter screen is disposed below the liner, and the filter screen is welded at an opening of the unloading hopper.
5. The self-detection device for a middle trough of a scraper conveyor according to claim 1, wherein a first slider is fixedly mounted on the outer frame, and the first cylindrical slide bar is slidably connected to the first slider; and a second slider is fixedly mounted on the frame, and the second cylindrical slide bar is slidably connected to the second slider.
6. The self-detection device for a middle trough of a scraper conveyor according to claim 1, wherein two impact force sensors are symmetrically disposed on the scraper.
7. The self-detection device for a middle trough of a scraper conveyor according to claim 6, wherein a groove is opened at a lower end of the scraper, threaded holes are opened at two ends of the groove, the scraper test block is disposed in the groove, and the scraper test block is clamped by using nuts passing through the threaded holes.
8. A detection method of the self-detection device for a middle trough of a scraper conveyor according to any one of claims 1 to 7, comprising the following steps:
(1) measuring the weight of a scraper test block and the weight of a liner by using a balance before experiment;
(2) mounting the liner horizontally and fixedly on short rods, and mounting the scraper test block in a groove of a scraper and fixing the scraper test block;
(3) starting a first variable-speed servo motor and a second variable-speed servo motor, and adjusting frequency of a frequency converter to adjust operation speeds of a baffle hoist conveyor and a horizontal conveyor;
(4) adding sufficient impact coal to a loading hopper, starting a third variable-speed servo motor to enable an entire slider-crank mechanism to operate, to complete simulation of a friction motion between the scraper and the liner under impact conditions, measuring a frictional force during impact and friction by using a pull-pressure sensor, and measuring an impact force during impact and friction by using an impact force sensor ; and (5) stopping the variable-speed servo motors after parameter measurement is completed, ending the test, collecting test coal, and measuring the weight of the scraper test block and the weight of the liner respectively by using the balance after experiment, to calculate a wear rate after impact and friction movements.
(1) measuring the weight of a scraper test block and the weight of a liner by using a balance before experiment;
(2) mounting the liner horizontally and fixedly on short rods, and mounting the scraper test block in a groove of a scraper and fixing the scraper test block;
(3) starting a first variable-speed servo motor and a second variable-speed servo motor, and adjusting frequency of a frequency converter to adjust operation speeds of a baffle hoist conveyor and a horizontal conveyor;
(4) adding sufficient impact coal to a loading hopper, starting a third variable-speed servo motor to enable an entire slider-crank mechanism to operate, to complete simulation of a friction motion between the scraper and the liner under impact conditions, measuring a frictional force during impact and friction by using a pull-pressure sensor, and measuring an impact force during impact and friction by using an impact force sensor ; and (5) stopping the variable-speed servo motors after parameter measurement is completed, ending the test, collecting test coal, and measuring the weight of the scraper test block and the weight of the liner respectively by using the balance after experiment, to calculate a wear rate after impact and friction movements.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710383549.7A CN107082228B (en) | 2017-05-26 | 2017-05-26 | self-detection middle groove device and detection method for scraper conveyor |
| CN201710383549.7 | 2017-05-26 | ||
| PCT/CN2017/114387 WO2018214460A1 (en) | 2017-05-26 | 2017-12-04 | Scraper conveyer self-testing center trough device and detection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA3014560A1 true CA3014560A1 (en) | 2018-11-26 |
| CA3014560C CA3014560C (en) | 2019-08-20 |
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| CA3014560A Active CA3014560C (en) | 2017-05-26 | 2017-12-04 | Self-detection device for middle trough of scraper conveyor and detection method |
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| Country | Link |
|---|---|
| CN (1) | CN107082228B (en) |
| AU (1) | AU2017396542B2 (en) |
| CA (1) | CA3014560C (en) |
| RU (1) | RU2693127C1 (en) |
| WO (1) | WO2018214460A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113340778A (en) * | 2021-05-06 | 2021-09-03 | 湖北工业大学 | Multifunctional particle material conveying test platform |
| RU2759555C1 (en) * | 2019-03-07 | 2021-11-15 | Китайский Университет Горного Дела И Технологии | Friction force monitoring system for the middle chutes of a drag conveyor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| RU2693127C1 (en) * | 2017-05-26 | 2019-07-01 | Китайский Университет Горного Дела И Технологии | Self-test device for scraper conveyor central chute and method of its testing |
| CN108072533B (en) * | 2017-11-30 | 2019-10-11 | 太原理工大学 | A kind of experimental provision and method detecting drag conveyor dynamic characteristic |
| CN108051171B (en) * | 2017-12-24 | 2020-03-17 | 太原理工大学 | Coal-throwing impact testing device for coal mining machine |
| CN109655360B (en) * | 2018-12-29 | 2021-07-23 | 天长市龙亨电子有限公司 | Hardness detection device of electric vehicle controller shell |
| CN117214007A (en) * | 2023-10-18 | 2023-12-12 | 苏州锐驰朗新材料有限公司 | Material detects ball impact test machine that falls |
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| US7779994B1 (en) * | 2006-08-16 | 2010-08-24 | Travis Tonny D | Method and apparatus for monitoring and controlling conveyor position |
| DE102010046197A1 (en) * | 2010-09-21 | 2012-03-22 | FAB GmbH Fördertechnik und Anlagenbau | Device for conveying pallets |
| US9683918B2 (en) * | 2014-01-14 | 2017-06-20 | Toyota Motor Engineering & Manufacturing North America, Inc. | Wear detection systems for overhead conveyor systems |
| CN204587977U (en) * | 2015-01-24 | 2015-08-26 | 山东科技大学 | A kind of checking system for plate wearing and tearing in Scraper Conveyer Middle Trough |
| CN104609133B (en) * | 2015-01-24 | 2017-01-11 | 山东科技大学 | System and method for detecting abrasion to scraper conveyer middle trough middle plate |
| CN104925460B (en) * | 2015-06-18 | 2017-03-01 | 辽宁工程技术大学 | A kind of the middle pan of scraper conveyor rotation angle detecting apparatus |
| US10145770B2 (en) * | 2015-07-29 | 2018-12-04 | Frost Tech Llc | Chain wear monitoring device |
| RU2693127C1 (en) * | 2017-05-26 | 2019-07-01 | Китайский Университет Горного Дела И Технологии | Self-test device for scraper conveyor central chute and method of its testing |
| CN206955047U (en) * | 2017-05-26 | 2018-02-02 | 中国矿业大学 | A kind of drag conveyor Autonomous test groove apparatus |
-
2017
- 2017-05-26 RU RU2018130013A patent/RU2693127C1/en active
- 2017-05-26 CN CN201710383549.7A patent/CN107082228B/en active Active
- 2017-12-04 WO PCT/CN2017/114387 patent/WO2018214460A1/en active Application Filing
- 2017-12-04 AU AU2017396542A patent/AU2017396542B2/en active Active
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2759555C1 (en) * | 2019-03-07 | 2021-11-15 | Китайский Университет Горного Дела И Технологии | Friction force monitoring system for the middle chutes of a drag conveyor |
| CN113340778A (en) * | 2021-05-06 | 2021-09-03 | 湖北工业大学 | Multifunctional particle material conveying test platform |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107082228A (en) | 2017-08-22 |
| CN107082228B (en) | 2019-12-06 |
| RU2693127C1 (en) | 2019-07-01 |
| CA3014560C (en) | 2019-08-20 |
| AU2017396542B2 (en) | 2020-01-16 |
| AU2017396542A1 (en) | 2018-12-13 |
| WO2018214460A1 (en) | 2018-11-29 |
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