Self-lubricating scraper conveyor chain wheel assembly

Abstract

The utility model relates to the technical field of coal mine machinery, in particular to a self-lubricating scraper conveyor chain wheel assembly, which is characterized in that a rotary joint (8) is arranged on a chain wheel shaft (14), and an oil injection port I (9) and an oil injection port II (21) are arranged on the rotary joint (8); comprising a controller, an electromagnetic valve, a lubricating pump, a grease distribution valve set, a lubricating grease barrel and a chain wheel assembly. The grease injection quantity of the bearing cavity of the chain wheel assembly can be set through the controller, grease is injected into the bearing cavity in sequence, the grease metering sensor meters the grease injection quantity of each path and feeds back the grease injection quantity to the controller, and the pressure sensor and the fault indicator are arranged, so that the grease injection pipeline fault of the automatic lubricating system can be quickly and accurately positioned, and stable operation of the automatic lubricating system is ensured; and the requirements of safe, efficient and automatic mining of mines are met.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine machinery, in particular to an automatic lubricating scraper conveyor sprocket assembly. Background Art

[0002] The sprocket assembly in the scraper conveyor is a key component for transmitting power in the transmission system. It receives the power of the transmission device for rotational motion, drives the scraper chain to reciprocate and rotate in the conveyor chute to transport materials. In order to meet the production requirements of the working surface, the sprocket assembly should have a sufficiently long service life and reliability, and minimize the work of replacing or maintaining the sprocket assembly. At present, there are mainly two ways to lubricate the sprocket assembly: one is thin oil lubrication, which has a complex structure, is difficult to design and process, has high requirements for the assembly process and level of the sprocket, has a large maintenance workload when the user uses it, and the oil leakage problem caused by the failure of the mechanical seal is difficult to solve; the other is grease lubrication, which has a simple structure, and manually uses a manual pump to inject grease into the sprocket assembly, and manually controls the injection amount and injection time interval of the grease. The grease injection amount and injection time interval are not easy to control, which easily causes the bearing to run in an excessive or insufficient state of grease and cause bearing failure, and the degree of automation is low. Summary of the invention

[0003] The utility model provides an automatically lubricating scraper conveyor sprocket assembly, which injects grease into the bearings of the sprocket assembly in a timely and quantitative manner through an automatic control system, thereby overcoming the shortcomings of the existing grease lubrication method for the bearings of the sprocket assembly, improving the operating stability of the sprocket assembly, and meeting the needs of safe, efficient and automated mining in coal mines.

[0004] The utility model solves the technical problem by adopting the technical scheme: an automatic lubrication scraper conveyor sprocket assembly, a sprocket shaft 14 is provided with a rotary joint 8, the rotary joint 8 has an oil filling port Ⅰ9 and an oil filling port Ⅱ21, the sprocket shaft 14 is provided with an oil filling main channel Ⅰ10 and an oil filling main channel Ⅱ20, the oil filling port Ⅰ9 is connected with the oil filling main channel Ⅰ10, the oil filling port Ⅱ21 is connected with the oil filling main channel Ⅱ20, six oil filling auxiliary channels Ⅰ12 are provided on the vertical section of the oil filling main channel Ⅰ10, and six oil filling auxiliary channels Ⅰ12 are provided on the vertical section of the oil filling main channel Ⅱ20 Oil injection auxiliary channel Ⅱ18, the inner circle of the inner ring of bearing Ⅰ13 and bearing Ⅱ17 has an oil groove and six oil holes, the outer circle of the outer ring has an oil groove and six oil holes, six oil injection auxiliary channels Ⅰ12 are connected with an oil groove and six oil holes on the inner circle of the inner ring of bearing Ⅰ13, six oil injection auxiliary channels Ⅱ18 are connected with an oil groove and six oil holes on the inner circle of the inner ring of bearing Ⅱ17, the bearing cavities at both ends of bearing Ⅰ13 and bearing Ⅱ17 are sealed with oil seals, and six breathable plugs 16 are respectively arranged at both ends of bearing seat Ⅰ11 and bearing seat Ⅱ19, and are connected with the bearing cavities.

[0005] In the automatic lubricating scraper conveyor sprocket assembly, the pressure sensor 2, the solenoid valve 3, the oil level sensor 4, the lubrication pump 5, the grease metering sensor 6, the grease distribution valve group 7 are electrically connected to the controller 1.

[0006] The described automatic lubricating scraper conveyor sprocket assembly, the solenoid valve 3 is connected to the lubrication pump 5 through a hose, the lubrication pump 5 is connected to the grease distribution valve group 7 through a hose, the lubrication pump 5 is placed in a grease barrel 22, the controller 1, the solenoid valve 3, the lubrication pump 5, the grease distribution valve group 7 and the grease barrel 22 are fixed in a protective box 23, and the connecting ears of the protective box 23 are fixed on the baffles near the head and tail of the scraper conveyor.

[0007] The beneficial effects of the utility model are: the intelligent control system realizes timed and quantitative grease lubrication for the bearings of the sprocket assembly, so that the bearings are always in the optimal lubrication state, and the set sensors can quickly locate the grease injection pipeline fault to ensure the stable operation of the sprocket assembly and meet the needs of safe, efficient and automated mining in coal mines. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 The utility model is a structural schematic diagram of an automatic lubricating scraper conveyor sprocket assembly.

[0009] As shown in the figure, 1. controller, 2. pressure sensor, 3. solenoid valve, 4. oil level sensor, 5. lubrication pump, 6. grease metering sensor, 7. grease distribution valve group, 8. rotary joint, 9. oil filling port Ⅰ, 10. main oil filling channel Ⅰ, 11. bearing seat Ⅰ, 12. auxiliary oil filling channel Ⅰ, 13. bearing Ⅰ, 14. sprocket shaft, 15. sprocket body, 16. breather plug, 17. bearing Ⅱ, 18. auxiliary oil filling channel Ⅱ, 19. bearing seat Ⅱ, 20. main oil filling channel Ⅱ, 21. oil filling port Ⅱ, 22. grease barrel, 23. protective box, 24. emulsion inlet P, 25. emulsion return port T. DETAILED DESCRIPTION

[0010] The utility model is further described in detail below in conjunction with the accompanying drawings: The utility model is an automatic lubricating scraper conveyor sprocket assembly: the controller 1, the solenoid valve 3, the lubrication pump 5, the grease distribution valve group 7 and the grease barrel 22 are installed and fixed in the protective box 23. The grease barrel 22 is installed and placed below the quantitative lubrication pump 5, and the grease barrel 22 has a built-in oil level sensor 4. The lubrication pump 5 is driven by emulsion, and the emulsion inlet pipeline is provided with a pressure sensor 2 and a fault indicator. When the pressure value is lower than the set value, the fault indicator flashes and alarms. The grease outlet pipeline is provided with a pressure sensor 2, a safety valve and a fault indicator to monitor the pressure value at the grease outlet. When it is higher than the set value, the fault indicator flashes and alarms, and the safety valve overflows. A grease metering sensor 6 is provided on the grease pipeline to monitor the oil injection amount of each line of the grease pipeline. The cables of the solenoid valve 3, the grease distribution valve group 7, the pressure sensor 2, the fault indicator, the oil level sensor 4 and the grease metering sensor 6 are all connected to the controller.

[0011] The lubrication pump 5 is driven by emulsion, and the emulsion enters the lubrication pump 5 through the solenoid valve 3. The controller 1 controls the solenoid valve 3 to change direction at a fixed time, thereby controlling the piston of the lubrication pump 5 to reciprocate, extracting and pressurizing the grease, and the pressurized grease is transported to the grease distribution valve group 7 through the oil pipe, and then transported to each lubrication point through each lubrication branch. The amount of grease injected into each lubrication point can be set by the controller 1. When the solenoid valve 3 is actuated to start grease injection, the grease distribution valve group 7 opens the first grease pipeline, and the grease enters the oil injection port Ⅰ9 through the rotary joint 8, flows through the main oil injection channel Ⅰ10 into the six oil injection auxiliary channels Ⅰ12, enters the oil groove and six oil holes of the bearing Ⅰ13, and finally enters the bearing cavity through the bearing Ⅰ13. The grease metering sensor 6 measures the amount of grease injected into the first channel and feeds back to the controller 1. When the amount of grease injected reaches the set value, the grease distribution valve group 7 automatically closes the first grease branch and opens the second grease branch. The grease enters the oil injection port Ⅱ21 through the rotary joint 8, flows through the main oil injection channel Ⅱ20 into the six oil injection auxiliary channels Ⅱ18, enters the oil groove and six oil holes of the bearing Ⅱ17, and finally enters the bearing cavity through the bearing Ⅱ17. The amount of grease injected into the second channel is measured and fed back to the controller 1, and grease is injected in sequence; during the grease injection process, the old oil in the bearing cavity is discharged through the breathable plug 16, and the grease injection amount and lubrication time of each bearing do not interfere with each other. All parameters can be set in the controller 1.

[0012] It should be understood that the above detailed description of the technical solution of the utility model with the help of preferred embodiments is illustrative rather than restrictive, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. An automatic lubricating scraper conveyor sprocket assembly, characterized in that: The sprocket shaft (14) is provided with a rotary joint (8), and the rotary joint (8) is provided with an oil injection port I (9) and an oil injection port II (21). The sprocket shaft (14) is provided with an oil injection main channel I (10) and an oil injection main channel II (20). The oil injection port I (9) is connected to the oil injection main channel I (10), and the oil injection port II (21) is connected to the oil injection main channel II (20). Six oil injection auxiliary channels I (12) are provided on a vertical section of the oil injection main channel I (10), and six oil injection auxiliary channels II (18) are provided on a vertical section of the oil injection main channel II (20). The bearing I (13 ) and the inner circle of the inner ring of the bearing II (17) have an oil groove and six oil holes, the outer circle of the outer ring has an oil groove and six oil holes, six oil injection auxiliary channels I (12) are connected with an oil groove and six oil holes on the inner circle of the inner ring of the bearing I (13), six oil injection auxiliary channels II (18) are connected with an oil groove and six oil holes on the inner circle of the inner ring of the bearing II (17), the bearing cavities at both ends of the bearing I (13) and the bearing II (17) are sealed with oil seals, and six air-permeable plugs (16) are respectively provided at both ends of the bearing seat I (11) and the bearing seat II (19), and are connected with the bearing cavities.

2. The automatic lubricating scraper conveyor sprocket assembly according to claim 1, characterized in that: The pressure sensor (2), the solenoid valve (3), the oil level sensor (4), the lubrication pump (5), the grease metering sensor (6), and the grease distribution valve group (7) are electrically connected to the controller (1).

3. The automatic lubricating scraper conveyor sprocket assembly according to claim 1, characterized in that: The solenoid valve (3) is connected to the lubrication pump (5) through a rubber hose, the lubrication pump (5) is connected to the grease distribution valve group (7) through a rubber hose, the lubrication pump (5) is placed in a grease barrel (22), the controller (1), the solenoid valve (3), the lubrication pump (5), the grease distribution valve group (7) and the grease barrel (22) are fixed in a protection box (23), and the connection ears of the protection box (23) are fixed to the baffles near the head and tail of the scraper conveyor.

Images