Lubricating oil level control and alarm device for cross beam bushing of crusher

Abstract

The utility model aims to provide a lubricating oil level control and alarm device for a cross beam bushing of a crusher, aiming at the problems existing in the conventional lubricating technology of the cross beam bushing of the crusher. The device comprises an oil tank, an oil pump, an oil pipe, an electronic liquid level meter, a PLC and an audible and visual alarm. The oil tank is connected with a crusher beam bushing through an oil pipe, and the oil pump is located at an outlet of the oil tank and connected with the PLC through signals. The electronic liquid level meter is arranged in a crusher cross beam bushing and is in signal connection with the PLC; the audible and visual alarm comprises an on-site audible and visual alarm and a control room audible and visual alarm, the on-site audible and visual alarm is in signal connection with the PLC, and the control room audible and visual alarm is in signal connection with the PLC through the upper computer. The device is used for automatically controlling the oil level of the bushing and carrying out alarm and interlocking protection on abnormal change of the oil level, so that the problems of low accuracy of manual oiling of lubricating oil of the crossbeam bushing of the crusher and jump stop of the crusher caused by low oil level are avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of crusher equipment, and in particular relates to a crusher bushing lubricating oil level control and alarm device. Background Art

[0002] The crossbeam (upper arm) of the crusher consists of a crossbeam cap (upper arm cap), a crossbeam bushing (upper arm bushing) and a tapered shaft. The tapered shaft is positioned by the crossbeam bushing (upper arm bushing). Thin oil is used to lubricate the tapered shaft and the crossbeam bushing (upper arm bushing) (hereinafter referred to as the bushing).

[0003] At present, some crushers have no reliable monitoring of this part of lubrication, while some use oil level detection devices to achieve real-time oil level monitoring and automatic interlock protection shutdown when the oil level is low.

[0004] Because a partially enclosed space is formed between the tapered shaft and the crossbeam bushing, the lubricant level cannot be visually observed. The existing bushing lubricant supply chain lacks automated control measures. When the oil level is low, the machine operator must manually operate the machine's operating box to start the oil pump to supply oil to the bushing. This increases the workload for workers and makes it impossible to confirm the level when adding lubricant. Summary of the Invention

[0005] The purpose of this utility model is to address the problems existing in existing crusher crossbeam bushing lubrication technology and provide a crusher crossbeam bushing lubricating oil level control and alarm device. This device automatically controls the bushing oil level and provides an alarm and interlock protection when the oil level changes abnormally, thereby avoiding the problems of low manual refueling accuracy of the crusher crossbeam bushing lubricating oil and the crusher tripping due to low oil level.

[0006] The technical solution of the utility model is as follows:

[0007] A crusher crossbeam bushing lubricating oil level control and alarm device, comprising an oil tank, an oil pump, an oil pipe, an electronic liquid level gauge, a PLC and an audible and visual alarm;

[0008] The oil tank is connected to the crusher beam bushing through an oil pipe, the oil pump is located at the oil tank outlet, and the oil pump is connected to the PLC through a signal; the electronic liquid level meter is arranged in the crusher beam bushing and is connected to the PLC through a signal; the sound and light alarm includes an on-site sound and light alarm and a control room sound and light alarm, the on-site sound and light alarm is connected to the PLC through a signal, and the control room sound and light alarm is connected to the PLC signal through a host computer.

[0009] Furthermore, in the above-mentioned crusher crossbeam bushing lubricating oil level control and alarm device, a visual window with a scale is provided on the oil tank wall.

[0010] Furthermore, in the above-mentioned crusher beam bushing lubricating oil level control and alarm device, the electronic liquid level meter is an ultrasonic electronic liquid level meter or a float type electronic liquid level meter.

[0011] Compared with the prior art, the advantages of this utility model are:

[0012] 1. This device monitors the oil level of the lubricating oil through an electronic liquid level gauge, which can reduce or avoid the crusher stopping due to low oil level; and can also avoid the problem of adding too little or too much lubricating oil.

[0013] 2. This device can reduce or avoid crusher failure and losses caused by crusher tripping due to low oil level. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 , a schematic structural diagram of the device of this embodiment;

[0015] Figure 2 , a connection diagram of the signal connection hardware in the device of this embodiment.

[0016] Among them, 1. Oil tank, 2. Oil pump, 3. Oil pipe, 4. Electronic liquid level gauge, 5. PLC, 6. On-site sound and light alarm, 7. Control room sound and light alarm, 8. Host computer, 11. Crusher, 12. Beam, 13. Beam cap, 14. Beam bushing, 15. Tapered shaft. DETAILED DESCRIPTION

[0017] Example 1

[0018] A crusher crossbeam bushing lubricating oil level control and alarm device, comprising an oil tank 1, an oil pump 2, an oil pipe 3, an electronic liquid level gauge 4, a PLC 5 and an audible and visual alarm;

[0019] The oil tank is connected to the crusher beam bushing through an oil pipe, a visual window with a scale is provided on the oil tank wall, the oil pump is located at the oil tank outlet, and the oil pump is connected to the PLC through a signal; the electronic liquid level gauge is arranged in the crusher beam bushing 14 and is connected to the PLC through a signal; the sound and light alarm includes an on-site sound and light alarm 6 and a control room sound and light alarm 7, the on-site sound and light alarm is connected to the PLC through a signal, and the control room sound and light alarm is connected to the PLC signal through a host computer 8.

[0020] Among them, the PLC is Siemens 1500 series, and the electronic liquid level meter is an ultrasonic electronic liquid level meter or a float type electronic liquid level meter.

[0021] The method of using this device is:

[0022] Four oil levels are set in the PLC: protection level, alarm level, automatic control level, and stop level. The PLC collects level data in real time. The automatic control level is set to the normal level of lubricating oil, and the oil pump does not operate.

[0023] 1) When the oil level is lower than the automatic control oil level, the PLC sends a signal to the oil pump to start it, so that the bushing low oil level automatically turns to the pump to supply oil.

[0024] 2) When the lubricating oil reaches the stop oil level, the PLC sends a signal to the oil pump to stop working and the oil supply stops.

[0025] 3) When the oil level drops to the alarm level, the oil level in the tank reaches the low oil level, indicating that the oil pump supplying oil to the bushing has not started automatically, or there is insufficient oil in the tank, or the oil pump outlet flow is small, leakage is serious, etc. As a result, although the oil pump is running, the oil supply is lower than the leakage rate or even the oil flow is zero, so the oil level continues to drop. The PLC sends an oil level alarm signal to the field sound and light alarm and the host computer, and the host computer then sends the signal to the control room sound and light alarm to remind people to intervene, check and report repairs, and be ready to stop overturning, handle load and stop at any time.

[0026] 4) When the oil level drops to the protection level, it means that the lubricating oil between the tapered shaft and the bushing may be interrupted at any time. To protect the safety of the equipment, the PLC sends a signal to the host computer, and the host computer immediately sends a prohibition instruction to the wellhead tipping system of the crusher to the mine, and at the same time starts the protection shutdown program, and the equipment automatically shuts down.

Claims

1. A crusher beam bushing lubricating oil level control and alarm device, characterized in that: Including fuel tank, fuel pump, fuel pipe, electronic level gauge, PLC and sound and light alarm; The oil tank is connected to the crusher beam bushing through an oil pipe, the oil pump is located at the oil tank outlet, and the oil pump is connected to the PLC through a signal; the electronic liquid level meter is arranged in the crusher beam bushing and is connected to the PLC through a signal; the sound and light alarm includes an on-site sound and light alarm and a control room sound and light alarm, the on-site sound and light alarm is connected to the PLC through a signal, and the control room sound and light alarm is connected to the PLC signal through a host computer.

2. The crusher beam bushing lubricating oil level control and alarm device according to claim 1 is characterized in that: A visual window with scales is provided on the wall of the oil tank.

3. The crusher beam bushing lubricating oil level control and alarm device according to claim 1 is characterized in that: The electronic liquid level meter is an ultrasonic electronic liquid level meter or a float type electronic liquid level meter.

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