CN216484450U - Trough plate performance bench test device for coal mining and transportation - Google Patents
Trough plate performance bench test device for coal mining and transportation Download PDFInfo
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- CN216484450U CN216484450U CN202122821008.2U CN202122821008U CN216484450U CN 216484450 U CN216484450 U CN 216484450U CN 202122821008 U CN202122821008 U CN 202122821008U CN 216484450 U CN216484450 U CN 216484450U
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Abstract
The utility model discloses a bench test device for the performance of a trough plate for coal mining and transportation, which comprises four scraper conveyors, wherein the four scraper conveyors are sequentially lapped end to end and are in different working conditions in a closed glass cover, and form a closed material transportation channel; a movable middle plate is arranged at a selected node on each scraper conveyor, and a hanging type counterweight pressurizing device is installed at the node; the sealed glass cover is internally provided with a heater and an air humidifier. According to different working conditions and the characteristics of an impact wear testing machine, the utility model combines the service working conditions of lining plates and conveying belts of raw material workshops such as mines, machinery and the like, designs and simulates four operating states of a conveyor in the process of mining and transporting mineral materials such as coal and the like, and is assisted by the regulation and control of humidity, pH value and temperature, so that the new testing machine can not only simulate the impact wear condition of the trough plate in the conveyor in the process of mining and transporting the coal more accurately, but also can more scientifically research the effect of the metal materials subjected to the abrasion of mineral impact grinding materials.
Description
Technical Field
The utility model relates to the technical field of impact wear of a trough plate in a scraper conveyor, in particular to a trough plate performance bench test device for coal mining and transportation.
Background
Coal is the main energy source in China, and high-performance wear-resistant steel is a key basic material for supporting safe and efficient operation of coal mining and transporting equipment. According to incomplete statistics, the economic loss of about 400 billion yuan RMB is caused by 30 ten thousand tons of steel (mainly a groove plate in a scraper conveyor) consumed by abrasion in the coal mining and transporting process in China every year. At present, researches on regulating and controlling the structure of the wear-resistant steel plate around coal mining are developed from multiple aspects. However, the laboratory evaluation conclusion of the wear resistance of the existing middle trough plate has great difference from the practical use condition. The main reason is that the service working condition of the trough plate in the scraper conveyor in the coal mining and transporting process is complex, and a typical impact wear testing machine is generally used for researching three-body impact wear in a simple environment. However, the service condition of the trough plate in the conveyor is complex in the coal mining and transporting process, and the impact wear failure behavior of the trough plate is coupled by multiple factors such as the operation mode, humidity and temperature of the conveyor, so that the laboratory evaluation conclusion and the actual use condition have larger access. Therefore, it is urgently needed to design a corresponding wear resistance evaluation device aiming at the complexity of the service working condition of the trough plate in the scraper conveyor for coal mining and transportation, and provide technical support for the research and development of the wear-resistant trough plate.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a rack test device for the performance of a slotted plate for coal mining and application, which aims to solve the problems in the prior art, and monitors various data of a conveyor in operation to control the operation state of each conveyor in real time, so as to test the wear data of the slotted plate under different working conditions.
In order to achieve the purpose, the utility model provides the following scheme: the utility model provides a rack test device for the performance of a trough plate for coal mining, which comprises four scraper conveyors, wherein the four scraper conveyors are sequentially lapped end to end and are in different working conditions in a closed glass cover, and form a closed material conveying channel; a movable middle plate is arranged at a selected node on each scraper conveyor, and a hanging type counterweight pressurizing device is installed at the node; and a heater and an air humidifier are arranged in the closed glass cover.
Preferably, the four scraper conveyors are respectively a cross side dumping state scraper conveyor, an end dumping horizontal state scraper conveyor, a scraper conveyor with a climbing angle of 10 degrees and a scraper conveyor with a climbing angle of 20 degrees.
Preferably, the selected node is located at the middle groove of the scraper conveyor, and the movable middle plate is arranged at the middle groove of the scraper conveyor in an extractable mode. The middle plate is divided into two parts along the center line, the two sides are fixed by bolts, and the middle part is connected by a designed lapping table. And after the equipment runs for a period of time, loosening the bolts at the two sides, taking out the middle plate, and evaluating the wear resistance of the middle plate through weight detection.
Preferably, the hanging type counterweight pressurizing device comprises a support frame, a hinged frame, a mounting seat, a connecting plate and pressing blocks, wherein the mounting seat is arranged at the bottom of a top plate of the Contraband type hinged frame, the connecting plate is connected with the mounting seat through a pin shaft, one end of the support frame is fixed with the connecting plate, the other end of the support frame is positioned on the middle trough plate, the pressing blocks are placed on the support frame, and the number of the pressing blocks can be adjusted according to different counterweights.
Preferably, the number of the heaters and the number of the air humidifiers are three.
Compared with the prior art, the utility model has the following beneficial technical effects:
according to different working conditions and the characteristics of an impact wear testing machine, the utility model combines the service working conditions of lining plates and conveying belts of raw material workshops such as mines, machinery and the like, designs and simulates four operating states of a conveyor in the process of mining and transporting mineral materials such as coal and the like, and is assisted by the regulation and control of humidity, pH value and temperature, so that the new testing machine can not only simulate the impact wear condition of the trough plate in the conveyor in the process of mining and transporting the coal more accurately, but also can more scientifically research the effect of the metal materials subjected to the abrasion of mineral impact grinding materials.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is an overall plan view of a bench test device for coal mining slat performance;
FIG. 2 is a side view of the scraper conveyor in an end-discharge horizontal condition;
FIG. 3 is a side view of a scraper conveyor with a ramp angle of 20;
FIG. 4 is a side view of the cross side-discharge flight conveyor;
FIG. 5 is a side view of a scraper conveyor with a ramp angle of 10;
FIG. 6 is a structural assembly diagram of a suspended counterweight pressing device;
FIG. 7 is a schematic view of the mounting position of the center deck;
wherein, 1, briquetting; 2, supporting frames; 3, mounting a base; 4, connecting plates; 5, a hinged frame; 6 middle trough plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The utility model aims to provide a rack test device for the performance of a slotted plate for coal mining and application, which aims to solve the problems in the prior art, and monitors various data of a conveyor in operation to control the operation state of each conveyor in real time, so as to test the wear data of the slotted plate under different working conditions.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1 to 7, in order to disclose the wear failure mechanism of the slot plate in coal mining and accurately evaluate the relative wear resistance of different wear-resistant steel materials, the embodiment provides a bench test device for the performance of the slot plate in coal mining.
In order to comprehensively simulate the service working condition of the trough plate 6 in the scraper conveyor in the coal mining and transporting process, the bench test device provided by the utility model comprises four scraper conveyors in different forms, namely a cross side dumping state, an end dumping horizontal state, a conventional state (the climbing angle is 10 degrees) and a special working condition state (the climbing angle is 20 degrees). All the conveyors are overlapped end to end, and the materials are sequentially unloaded to form a closed material conveying channel.
In order to facilitate sampling at any time and verify the repeatability of the test, a middle groove plate 6 (the middle groove plate 6 is a material to be evaluated, specifically, wear-resistant steel plates of different manufacturers are installed at different loading detection parts of a testing machine for abrasion comparison, and then the performances of the wear-resistant steel plates of different manufacturers are evaluated) is arranged at a specific node of each scraper conveyor, and a hanging type balance weight pressurizing device is installed at the node to achieve the purpose of accelerating abrasion. In order to simulate the service conditions of the middle trough plate 6 under different humidity and pH values, a large-size glass cover is prepared, a whole set of closed material conveying channels formed by the four scraper conveyors in different forms is placed in the closed glass cover, the humidity and the pH value of the environment are adjusted through an air humidifier, and the temperature of the environment is adjusted through a heater.
Wherein, suspension type counter weight pressure device includes support frame 2, articulated frame 5, mount pad 3, connecting plate 4 and briquetting 1, and Contraband type's articulated frame 5's roof bottom is provided with mount pad 3, and connecting plate 4 is connected with mount pad 3 through the round pin axle, and support frame 2's one end is fixed with connecting plate 4, and the other end is located well frid 6, and briquetting 1 is placed on support frame 2, and the quantity of briquetting 1 can be adjusted according to the difference of counter weight. The hanging counterweight pressurizing device adjusts the load size by increasing/decreasing the counterweight on the device, confirms the load size by the distance between the adjusting device and the material conveyed by the middle trough plate 6, and confirms the load size by detecting the value of the pressure sensor below the middle trough plate 6.
The structural schematic diagram of the abrasion resistance bench test device for coal mining is shown in figure 1, the abrasion resistance bench test device is formed by overlapping four scraper conveyors which are reduced in proportion from head to tail, the abrasion failure behavior of a trough plate 6 in the scraper conveyors under the 4 states is simulated, and the structures of the 4 different scraper conveyors are shown in figures 2-5. The total floor area of the bench test device is about 21 square meters, and the power input of equipment operation, including voltage and current of the equipment in operation, is started to be acquired under the stable operation state of all equipment of the whole set of abrasion tester through monitoring various data of the conveyor in operation; collecting the rotating speed of the chain wheel, and calculating the instantaneous speed of the material on the test piece; collecting the number of turns of the chain wheel for calculating the conveying distance of the grinding material on the test piece; through the monitoring data, the running state of each conveyor is controlled in real time, so that the wear data of the middle trough plate under different working conditions are tested.
The scraper conveyer mainly comprises a coal cutter walking mechanism, a motor, a hydraulic coupler, a speed reducer, a coupling, a chain wheel, a middle groove, a scraper and a circular chain. The middle groove of the scraper conveyer mainly comprises four parts, namely a ledge, a middle plate, a bottom plate and a coal baffle plate. The working principle is that the open chute is used as a bearing part of coal and gangue, and a scraper is fixed on a chain (forming a scraper chain) and used as a traction component. After the transmission part of the machine head is started, the chain wheel on the shaft of the machine head is driven to rotate, so that the scraper chain circularly runs to drive the material to move along the chute until the material is unloaded at the machine head part. The scraper chain bypasses the chain wheel to perform stepless closed circulation operation to finish the conveying of the materials.
During the material conveying process, the relative movement between the circular chain and the middle plate causes the middle plate below the chain to be worn and becomes the most serious part on the conveyor. In order to simulate the wear failure behavior of the middle plate, the middle groove plate 6 at a specific node is firstly designed into an extraction mode, and two test materials can be placed in parallel to realize the consistency of the evaluation working condition. The length, width and height of the test piece were 240 mm, 160mm and 20 mm, respectively. In addition, in order to accelerate the abrasion test and establish an accurate functional relationship between the coal passing amount of the conveyor and the abrasion amount of the middle plate. A hanging type balance weight pressurizing device is applied above the removable middle trough plate 6, and controllability of loading force is achieved through the balance weight.
In order to meet the requirements, the temperature, the humidity and the pH value can be controlled in the test process. The bench test device consisting of four scraper conveyors of different forms is placed in a sealed glass cover. The power of three air humidifiers arranged in the glass cover is regulated and controlled to simulate the humidity under different working conditions; simulating a working condition environment with pH value requirement by regulating and controlling the proportion of spraying liquid in the humidifier; three heaters are arranged, and the regulation and control of the simulated environment temperature are realized by adjusting the power of the heaters.
In this embodiment, the main test parameters of the abrasion resistance bench test device for coal mining are set as follows:
1. material conveying capacity of-31 t/h; 2. scraper chain speed-0.56 m/s;
3. round-link chain specification-832 mm; 4. the test temperature is-room temperature to 50 ℃, and the temperature control precision is +/-1 ℃;
5. test humidity-40-80%; 6. load- -20-100N;
7. corrosive media- -acidic, neutral or basic; 8. sample size- -240X 160X 20 mm.
The utility model uses machines, is not limited to coal mine impact abrasive wear tests, and can also be used for abrasive wear tests of various mineral substances on materials. The test material is mainly metal subjected to impact abrasive wear, and comprises a steel material, a nonferrous metal material, a metal matrix composite material and the like.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
The principle and the implementation mode of the utility model are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the utility model; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the utility model.
Claims (5)
1. The utility model provides a coal mining and transportation is with frid performance bench test device which characterized in that: the four scraper conveyors are sequentially lapped end to end and are in different working condition states, and form a closed material conveying channel; a middle trough plate is arranged at a selected node on each scraper conveyor, and a hanging type counterweight pressurizing device is installed at the node; and a heater and an air humidifier are arranged in the closed glass cover.
2. The coal mining and utilization trough plate performance bench test device of claim 1, characterized in that: the four scraper conveyors are respectively a cross side-dumping state scraper conveyor, an end-dumping horizontal state scraper conveyor, a scraper conveyor with a climbing angle of 10 degrees and a scraper conveyor with a climbing angle of 20 degrees.
3. The coal mining and utilization trough plate performance bench test device of claim 1, characterized in that: the selected node on the scraper conveyor is positioned at the middle groove of the scraper conveyor, and the middle groove plate is arranged at the middle groove of the scraper conveyor in a drawing mode.
4. The coal mining and utilization trough plate performance bench test device of claim 1, characterized in that: the hanging type counterweight pressurizing device comprises a support frame, an articulated frame, a mounting seat, a connecting plate and a pressing block, wherein the Contraband type is arranged at the bottom of a top plate of the articulated frame, the mounting seat is connected with the connecting plate through a pin shaft, one end of the support frame is fixed with the connecting plate, the other end of the support frame is positioned on a middle trough plate, the pressing block is placed on the support frame, and the number of the pressing block can be adjusted according to different counterweights.
5. The coal mining and utilization trough plate performance bench test device of claim 1, characterized in that: the number of the heaters and the number of the air humidifiers are three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122821008.2U CN216484450U (en) | 2021-11-18 | 2021-11-18 | Trough plate performance bench test device for coal mining and transportation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122821008.2U CN216484450U (en) | 2021-11-18 | 2021-11-18 | Trough plate performance bench test device for coal mining and transportation |
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| CN216484450U true CN216484450U (en) | 2022-05-10 |
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| CN202122821008.2U Active CN216484450U (en) | 2021-11-18 | 2021-11-18 | Trough plate performance bench test device for coal mining and transportation |
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