CN112504890B - Experimental device for simulating friction and wear of coal mine scraper conveyor - Google Patents
Experimental device for simulating friction and wear of coal mine scraper conveyor Download PDFInfo
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- CN112504890B CN112504890B CN202011284686.3A CN202011284686A CN112504890B CN 112504890 B CN112504890 B CN 112504890B CN 202011284686 A CN202011284686 A CN 202011284686A CN 112504890 B CN112504890 B CN 112504890B
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- stirrer
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- wire rope
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/56—Investigating resistance to wear or abrasion
Abstract
An experimental device for simulating friction and wear of a coal mine scraper conveyor relates to an experimental device for the coal mine conveyor, and the device comprises a stirring experimental cavity (1) and a stirrer (2); the test cavity bottom plate (18) is connected with the test cavity (9) through bolts, the bottom plate plugging flange (17) is connected with the test cavity bottom plate (18) through bolts, and the middle groove friction sample (16) is fixed with the test cavity bottom plate (18) through bolts; the flange rotary outer cylinder (19), the motor connecting seat (23) and the test cavity flange (10) are welded into a whole; the stirrer shaft (12) is connected with the stirrer sample mounting rack (13) by a flat key and is fixed by an end bolt; two ends of the stirrer shaft sleeve (20) are connected with the flange rotary outer cylinder (19) through bearings (21), and then are axially limited through a blocking plate (22); the experimental device can be used for comparing and researching the friction and abrasion conditions of different middle groove materials and surface structures in a coal-gangue-water system.
Description
Technical Field
The invention relates to an experimental device, in particular to an experimental device for simulating friction and wear of a scraper conveyor of a coal mine.
Background
Scraper conveyors are critical conveying equipment in coal mines, particularly on fully mechanized mining faces. The materials conveyed by the scraper conveyor comprise water-containing coal, gangue, stone and the like. Friction between scraper blade and middle part groove belongs to the multisome friction field, relates to the friction and wear action under the acid-base water condition simultaneously.
At present, no special experimental equipment for simulating friction and wear behaviors of a scraper and a middle groove exists, especially under the complex friction condition of a coal-gangue-water system.
Disclosure of Invention
The invention aims to provide an experimental device for simulating the friction and wear of a coal mine scraper conveyor, which utilizes stirring friction to simulate the friction and wear behavior between a scraper and a middle groove in the conveying process of the coal mine underground scraper conveyor, and utilizes a stirring method to simulate the friction and wear behavior of the scraper and the middle groove, so that the friction and wear conditions of different middle groove materials and surface structures in a coal-gangue-water system can be compared and studied.
The invention aims at realizing the following technical scheme:
an experimental device for simulating friction and wear of a coal mine scraper conveyor, wherein the device comprises a stirring experimental cavity and a stirrer; the bottom plate of the test cavity is connected with the test cavity through bolts, the bottom plate plugging flange is connected with the bottom plate of the test cavity through bolts, and the friction sample in the middle groove is fixed with the bottom plate of the test cavity through bolts; the flange rotary outer cylinder, the motor connecting seat and the test cavity flange are welded into a whole; the stirrer shaft is connected with the stirrer sample mounting frame through a flat key and is fixed through an end bolt; two ends of the stirrer shaft sleeve are connected with the flange rotary outer cylinder through bearings, and then axial limiting is carried out through a blocking plate; the scraper friction sample is fixed in a groove of the stirrer sample mounting frame through a bolt; the low-speed high-torque hydraulic motor is matched with the stirrer shaft through a spline and is connected with the motor connecting seat through a bolt; the stirrer shaft is connected with the stirrer shaft sleeve through a flat key; the stirring test cavity is arranged on one side of the test equipment frame through bolts; the hydraulic multi-way reversing valve and the hydraulic pump station are fixedly arranged on the other side of the test equipment frame through bolts; the stirrer is connected with a stirrer lifting device through a steel wire rope, the stirrer lifting device uses two upper cross beams of a test equipment frame as guide rails, the upper part of the stirrer lifting device is connected with a stirrer pushing device through the steel wire rope, and the left side of the stirrer lifting device is connected with a pushing balance weight through the steel wire rope; the stirrer lifting device translates along the two upper cross beams of the test equipment frame, and lifts the stirrer sample mounting frame of the stirrer to be above the upper surface of the stirring test cavity; the stirrer lifting device moves horizontally along the guide rails of the two upper cross beams of the test equipment frame and is fixed on the guide rails; the driving wheel I rotates, the inner sliding frame moves horizontally to the right to drive the driven wheel to rotate, and the stirrer is lifted to realize lifting movement; the driving wheel I rotates reversely, and the stirrer can be reset; the stirrer pushing device is welded on the test equipment frame through a pushing device supporting seat; the fixing frame is welded with the pushing device supporting seat, and the steel wire rope fixing frame II is connected with a steel wire rope; the driving wheel II rotates, the piston slide bar moves rightwards in the piston cylinder body, the steel wire rope connecting frame II of the pushing device pulls the stirrer lifting device rightwards, the stirrer is horizontally moved to one side of the hydraulic pump station, the driving wheel II reversely rotates, and the stirrer lifting device can be reset.
The experimental device for simulating friction and wear of the coal mine scraper conveyor is characterized in that the stirring test cavity comprises a test cavity body, a sealing O-shaped ring, a middle groove friction sample, a bottom plate plugging flange, a test cavity body bottom plate and a bottom plate plugging flange sealing O-shaped ring.
The experimental device for simulating friction and abrasion of the coal mine scraper conveyor comprises a testing cavity flange, a low-speed high-torque hydraulic motor, a stirrer shaft, a stirrer sample mounting frame, a scraper friction sample, a flange rotating outer cylinder, a stirrer shaft sleeve, a bearing, a blocking plate and a motor connecting seat.
The experimental device for simulating friction and wear of the coal mine scraper conveyor is characterized in that the blocking plate and the flange rotary outer cylinder are fixed through bolts.
The experimental device for simulating friction and wear of the coal mine scraper conveyor is characterized in that the inner cavity of the piston is a cavity.
The experimental device for simulating friction and wear of the coal mine scraper conveyor is characterized in that the counterweight connecting frame, the pushing device steel wire rope connecting frame I, the outer sliding frame and the steel wire rope fixing frame I are welded into a whole.
The experimental device for simulating friction and wear of the coal mine scraper conveyor is characterized in that the inner sliding frame and the fixed top plate are welded into a whole.
The experimental device for simulating the friction and wear of the coal mine scraper conveyor is characterized in that the steel wire rope fixing frame II and the pushing device supporting seat are welded into a whole.
The experimental device for simulating friction and wear of the coal mine scraper conveyor is characterized in that the steel wire rope connecting frame II of the pushing device and the stirrer lifting device are welded into a whole.
The experimental device for simulating the friction and wear of the coal mine scraper conveyor is characterized in that the fixing frame and the piston cylinder body are fixed together through pins.
Drawings
FIG. 1 is a schematic structural diagram of a friction stir testing device;
FIG. 2 is a schematic view of a friction stir chamber and stirrer configuration;
FIG. 3 is a schematic illustration of the friction stir chamber and stirrer structure shown disassembled;
FIG. 4 is an enlarged view of the stirrer structure;
FIG. 5 is an enlarged view of the stirring chamber structure;
FIG. 6 is a block diagram of a sample mounting bracket for the blender;
FIG. 7 is a top view of FIG. 6;
FIG. 8 is a schematic view of a stirrer lifting device;
FIG. 9 is a schematic diagram of a pusher jack of the blender;
FIG. 10 is a flowchart of the stirrer operation.
Description of the embodiments
The present invention will be described in detail with reference to the embodiments shown in the drawings.
The invention utilizes a stirring method to simulate the friction and wear behaviors of the scraping plate and the middle groove. At most, 6 rectangular friction samples (simulated scrapers) can be simultaneously installed on the sample installation frame, so that the friction and wear performances of different scraper materials and surface structures can be compared and studied. The bottom plate of the stirring cavity is sealed with the cavity body by an O-shaped ring, a round sample (simulating a middle groove) with the same diameter as the bottom plate can be installed on the bottom plate, and the friction and abrasion conditions of different middle groove materials and surface structures in a coal-gangue-water system can be compared and studied. In addition, in order to facilitate the installation of the test sample and the cleaning of the cavity in the test process, the friction stir testing equipment further comprises a stirrer lifting device and a pushing device.
Examples
As shown in fig. 1, the present invention is constituted by: the device comprises a stirring test cavity 1, a stirrer 2, a stirrer pushing device 3, a stirrer lifting device 4, a test equipment frame 5, a hydraulic multi-way reversing valve 6, a hydraulic pump station 7 and a pushing balance weight 8.
As shown in fig. 2 and 3, the present invention comprises: the test chamber comprises a test chamber body 9, a test chamber body flange 10, a low-speed high-torque hydraulic motor 11, a stirrer shaft 12, a stirrer sample mounting frame 13, a scraper friction sample 14, a sealing O-shaped ring 15, a middle groove friction sample 16, a bottom plate plugging flange 17 and a test chamber body bottom plate 18.
As shown in fig. 4, the present invention is constituted by: the flange rotates the urceolus 19, agitator sleeve 20, bearing 21, closure plate 22, motor connecting seat 23.
As shown in fig. 5, the present invention is constituted by: the sealing O-shaped ring 15, the friction sample 16 in the middle groove, the bottom plate 18 of the test cavity and the sealing O-shaped ring 24 of the bottom plate plugging flange.
As shown in fig. 6 and 7, the present invention comprises: the blade rubs against the test specimen 14.
As shown in fig. 8, the present invention is constituted by: the balance weight connecting frame 25, the driven wheel 26, the pushing device steel wire rope connecting frame I27, the outer sliding frame 28, the inner sliding frame 29, the fixed top plate 30, the driving wheel I31, the steel wire rope fixing frame I32 and the piston inner cavity 33.
As shown in fig. 9, the present invention is constituted by: driven wheel 34, pushing device supporting seat 35, fixing frame 36, wire rope fixing frame II 37, pin fixing 38, piston slide bar 39, wire rope 40, piston cylinder 41, driving wheel II 42 and pushing device wire rope connecting frame II 43.
The core components of the friction stir testing device comprise a stirring testing cavity 1 and a stirrer 2. The stirring test cavity 1 comprises a test cavity 9, a sealing O-shaped ring 15, a middle groove friction sample 16, a bottom plate plugging flange 17, a test cavity bottom plate 18 and a bottom plate plugging flange sealing O-shaped ring 24. The bottom plate 18 of the test cavity is connected with the test cavity 9 through bolts, and the two are used for preventing water in the cavity from leaking outwards through the sealing O-shaped ring 15. The bottom plate plugging flange 17 is connected with the bottom plate 18 of the test cavity through bolts, and the bottom plate plugging flange are used for sealing the O-shaped ring 24 to prevent water in the cavity from leaking outwards. The center channel friction coupon 16 is bolted to the test cavity floor 18.
The stirrer 2 comprises a test cavity flange 10, a low-speed high-torque hydraulic motor 11, a stirrer shaft 12, a stirrer sample mounting frame 13, a scraper friction sample 14, a flange rotating outer cylinder 19, a stirrer shaft sleeve 20, a bearing 21, a blocking plate 22 and a motor connecting seat 23. Wherein the flange rotary outer cylinder 19, the motor connecting seat 23 and the test cavity flange 10 are welded into a whole. The stirrer shaft 12 and the stirrer sample mounting frame 13 are connected by a flat key and fixed by a head bolt. The two ends of the stirrer shaft sleeve 20 are connected with the flange rotary outer cylinder 19 through bearings 21, and then are axially limited through a blocking plate 22. The closure plate 22 and the flange rotary outer cylinder 19 are fixed by bolts. The blade friction test piece 14 is fixed in the groove of the stirrer test piece mounting frame 13 by bolts, and at most 6 pieces can be mounted simultaneously. The low-speed high-torque hydraulic motor 11 is spline-fitted with the agitator shaft 12 and connected to the motor connecting seat 23 by bolts. The stirrer shaft 12 is connected to the stirrer shaft sleeve 20 by a flat key.
The stirring test chamber 1 is mounted on one side of the test equipment frame 5 by bolts. The hydraulic multi-way reversing valve 6 and the hydraulic pump station 7 are fixedly arranged on the other side of the test equipment frame 5 through bolts. The stirrer 2 is connected with the stirrer lifting device 4 through a steel wire rope, the stirrer lifting device 4 uses two upper cross beams of the test equipment frame 5 as guide rails, the upper part is connected with the stirrer pushing device 3 through the steel wire rope, and the left side is connected with the pushing balance weight 8 through the steel wire rope. Under the combined action of the stirrer pushing device 3 and the pushing balance weight 8, the stirrer lifting device 4 can translate along the two upper cross beams of the test equipment frame 5, and can lift the stirrer sample mounting frame 13 of the stirrer 2 above the upper surface of the stirring test cavity 1. At this time, under the action of the stirrer pushing device 3, the stirrer 2 can be finally translated to one side of the hydraulic pump station, so that the scraper friction sample 14 can be conveniently replaced, the stirring test cavity 1 is cleaned, and the middle groove friction sample 16 is replaced.
The stirrer lifting device 4 moves horizontally along the guide rails of the two upper cross beams of the test equipment frame 5 and is fixed on the guide rails. The counterweight connecting frame 25, the pushing device steel wire rope connecting frame I27, the outer sliding frame 28 and the steel wire rope fixing frame I32 are welded into a whole. The driving wheel I31 rotates, the inner sliding frame 29 moves in a translational way to the right, the driven wheel 26 is driven to rotate, and the stirrer 2 is lifted to realize lifting movement. The driving wheel I31 rotates reversely, and the stirrer 2 can be reset. The piston bore 33 is a cavity. The inner slide frame 29 and the fixed top plate 30 are welded as one body.
The stirrer pusher 3 is welded to the test device frame 5 via a pusher support 35. The fixing frame 36 and the pushing device supporting seat 35 are welded together, and the steel wire rope fixing frame II 37 is connected with the steel wire rope 40. The driving wheel II 42 rotates, the piston slide rod moves rightwards in the piston cylinder 41, the pushing device steel wire rope connecting frame II 43 pulls the stirrer lifting device 4 rightwards, the movement of translating the stirrer 2 to one side of the hydraulic pump station is achieved, the driving wheel II 42 rotates reversely, and the stirrer lifting device 4 can be reset. The wire rope fixing frame II 37 and the pushing device supporting seat 35 are welded into a whole. The pushing device steel wire rope connecting frame II 43 and the stirrer lifting device 4 are welded into a whole. The mount 36 and the piston cylinder 41 are fixed together by pins.
When the invention is operated, the coal-gangue-water mixed material is added into the cavity, the low-speed high-torque hydraulic motor is started to drive the stirrer shaft and the stirrer sample mounting frame to rotate, the friction experiment is started by the scraper friction sample and the middle groove friction sample, and the low-speed high-torque hydraulic motor is stopped after the experiment is completed.
The driving wheel I on the stirrer lifting device is turned on to rotate, the sliding rod in the inner cavity of the stirrer lifting device moves rightwards, the steel wire rope is pulled to move rightwards to translate, the stirrer is lifted to a proper position, the rotation of the driving wheel I is stopped, and lifting movement is achieved. The driving wheel II of the stirrer pushing device is turned on to rotate, the piston slide rod of the pushing device moves rightwards, the steel wire rope is pulled to do translational motion rightwards, so that the stirrer lifting device does translational motion rightwards along the two upper beam guide rails of the test equipment frame 5, when the stirrer lifting device translates to a designated position on one side of the hydraulic pump station, the rotation of the driving wheel II on the stirrer pushing device is stopped, and at the moment, the weight on the left side of the equipment frame enables the stirrer lifting device to be fixed on the guide rails. And taking down the scraper friction sample and the middle groove sample for subsequent treatment such as cleaning and the like, and measuring the friction and wear conditions. Cleaning an inner cavity of the stirrer, opening holes at the bottom of the bottom plate plugging flange and the bottom of the stirrer, discharging the coal-gangue-water mixed material after the test, cleaning, closing the holes after the cleaning is finished, installing the bottom plate plugging flange, and ending the test.
Claims (10)
1. An experimental device for simulating friction and wear of a coal mine scraper conveyor is characterized by comprising a stirring experimental cavity (1) and a stirrer (2); the test cavity bottom plate (18) is connected with the test cavity (9) through bolts, the bottom plate plugging flange (17) is connected with the test cavity bottom plate (18) through bolts, and the middle groove friction sample (16) is fixed with the test cavity bottom plate (18) through bolts; the flange rotary outer cylinder (19), the motor connecting seat (23) and the test cavity flange (10) are welded into a whole; the stirrer shaft (12) is connected with the stirrer sample mounting rack (13) by a flat key and is fixed by an end bolt; two ends of the stirrer shaft sleeve (20) are connected with the flange rotary outer cylinder (19) through bearings (21), and then are axially limited through a blocking plate (22); the scraper friction sample (14) is fixed in a groove of the stirrer sample mounting frame (13) through a bolt; the low-speed high-torque hydraulic motor (11) is matched with the stirrer shaft (12) through a spline and is connected with the motor connecting seat (23) through a bolt; the stirrer shaft (12) is connected with the stirrer shaft sleeve (20) through a flat key; the stirring test cavity (1) is arranged on one side of the test equipment frame (5) through bolts; the hydraulic multi-way reversing valve (6) and the hydraulic pump station (7) are fixedly arranged on the other side of the test equipment frame (5) through bolts; the stirrer (2) is connected with the stirrer lifting device (4) through a steel wire rope, the stirrer lifting device (4) uses two upper cross beams of the test equipment frame (5) as guide rails, the upper part of the stirrer lifting device is connected with the stirrer pushing device (3) through the steel wire rope, and the left side of the stirrer lifting device is connected with the pushing balance weight (8) through the steel wire rope; the stirrer lifting device (4) translates along two upper cross beams of the test equipment frame (5) to lift a stirrer sample mounting frame (13) of the stirrer (2) above the upper surface of the stirring test cavity (1); the stirrer lifting device (4) moves horizontally along the two upper cross beam guide rails of the test equipment frame (5) and is fixed on the guide rails; the driving wheel I (31) rotates, the inner sliding frame (29) moves horizontally to the right to drive the driven wheel (26) to rotate, and the stirrer (2) is lifted to realize lifting movement; the driving wheel I (31) reversely rotates, and the stirrer (2) is reset; the stirrer pushing device (3) is welded on the test equipment frame (5) through a pushing device supporting seat (35); the fixing frame (36) is welded with the pushing device supporting seat (35), and the steel wire rope fixing frame II (37) is connected with the steel wire rope (40); the driving wheel II (42) rotates, the piston slide rod moves rightwards in the piston cylinder body (41), the pushing device steel wire rope connecting frame II (43) pulls the stirrer lifting device (4) rightwards, the movement of translating the stirrer (2) to one side of the hydraulic pump station is achieved, the driving wheel II (42) rotates reversely, and the stirrer lifting device (4) is reset.
2. The experimental device for simulating friction and wear of a scraper conveyor for a coal mine, as claimed in claim 1, wherein the stirring experimental cavity (1) comprises an experimental cavity (9), a sealing O-shaped ring (15), a middle groove friction sample (16), a bottom plate plugging flange (17), an experimental cavity bottom plate (18) and a bottom plate plugging flange sealing O-shaped ring (24).
3. The experimental device for simulating friction and wear of a scraper conveyor for a coal mine according to claim 1, wherein the stirrer (2) comprises a test cavity flange (10), a low-speed high-torque hydraulic motor (11), a stirrer shaft (12), a stirrer sample mounting frame (13), a scraper friction sample (14), a flange rotating outer cylinder (19), a stirrer shaft sleeve (20), a bearing (21), a blocking plate (22) and a motor connecting seat (23).
4. An experimental device for simulating frictional wear of a scraper conveyor for coal mines according to claim 1, wherein the blocking plate (22) and the flange rotary outer cylinder (19) are fixed by bolts.
5. An experimental device for simulating frictional wear of a scraper conveyor for coal mines according to claim 1, wherein the piston inner chamber (33) is a cavity.
6. The experimental device for simulating friction and wear of a scraper conveyor for a coal mine according to claim 1, wherein the counterweight connecting frame (25), the pushing device steel wire rope connecting frame I (27), the outer sliding frame (28) and the steel wire rope fixing frame I (32) are welded into a whole.
7. An experimental device for simulating frictional wear of a scraper conveyor for coal mines according to claim 1, wherein the inner slide frame (29) and the fixed top plate (30) are welded as one body.
8. The experimental device for simulating friction and wear of a scraper conveyor of a coal mine according to claim 1, wherein the steel wire rope fixing frame II (37) and the pushing device supporting seat (35) are welded into a whole.
9. The experimental device for simulating friction and wear of a scraper conveyor of a coal mine according to claim 1, wherein the steel wire rope connecting frame II (43) of the pushing device is welded with the lifting device (4) of the stirrer into a whole.
10. An experimental device for simulating frictional wear of a scraper conveyor for coal mines according to claim 1, wherein the fixing frame (36) and the piston cylinder (41) are fixed together by a pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011284686.3A CN112504890B (en) | 2020-11-17 | 2020-11-17 | Experimental device for simulating friction and wear of coal mine scraper conveyor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011284686.3A CN112504890B (en) | 2020-11-17 | 2020-11-17 | Experimental device for simulating friction and wear of coal mine scraper conveyor |
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| CN112504890A CN112504890A (en) | 2021-03-16 |
| CN112504890B true CN112504890B (en) | 2023-09-05 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113984566B (en) * | 2021-10-15 | 2022-07-22 | 四川大学 | Micro-lubrication-based friction wear machine for comparison test ring block and test method thereof |
| CN114047088B (en) * | 2021-11-11 | 2022-06-21 | 九江中科鑫星新材料有限公司 | Abrasion experiment equipment |
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