Device for automatically supervising lubricating oil level of gearbox

Abstract

The utility model discloses a gear box lubricating oil level automatic supervision device, a gear box is matched with a motor capable of driving gears in the gear box to rotate in a meshed mode, the gear box is provided with a lubricating oil tank, and the height of the lubricating oil tank ensures that the lubricating oil level in the lubricating oil tank is not lower than the lowest position of lubricating oil in the gear box. The lubricating oil tank is communicated with a lubricating oil inlet in the gearbox through an oil outlet pipe, and the oil outlet pipe is provided with a floating ball valve for controlling on-off of an oil outlet pipeline. According to the siphon principle, lubricating liquid in the gear box is kept to automatically flow in, and a conveying oil pump is saved; and frequent opening and closing of the floating ball valve are reduced, failure is not prone to occurring, and shutdown maintenance cost is reduced.

Description

Technical Field

[0001] This application relates to a control device for a machine lubrication system. Background Art

[0002] Lubricating oil is a liquid or semi-solid lubricant used in various types of automobiles and mechanical equipment to reduce friction, protect machinery and workpieces.

[0003] The so-called lubrication system refers to the general term for a series of grease supply, grease discharge and their auxiliary devices that supply lubricants to lubrication parts. The function of the lubrication system is to deliver a certain amount of clean lubricating oil to the surfaces of parts in relative motion to achieve liquid friction, reduce friction resistance, reduce wear of machine parts, and clean and cool the part surfaces. The design of the lubrication system depends on the characteristics and usage conditions of various mechanical equipment, and it is composed of several main components such as hydraulic pumps, fuel tanks, filters, cooling devices, heating devices, sealing devices, buffer devices, safety devices, alarms, etc.

[0004] However, ordinary machine lubrication systems are basically unattended. After installing cameras to monitor, there are sometimes oversights, resulting in the water pump running out of oil, the main components being burned out, and unable to operate normally (the oil leakage time is very short). The cost of purchasing accessories to repair one is relatively high, and the repair takes time. Summary of the Invention

[0005] Purpose of the Utility Model:

[0006] To provide an oil shortage and power-off protection system with linkage control of the oil circuit and the circuit, which is not easy to burn out the machine.

[0007] Technical Solution:

[0008] An automatic monitoring device for the lubricating oil level of a gearbox in this application. The gearbox is equipped with an electric motor that can drive the gears in the gearbox to mesh and rotate, and the electric motor is connected to a power source; the gearbox is equipped with a lubricating oil tank, and the height of the lubricating oil tank ensures that the lubricating oil level therein is not lower than the lowest position of the lubricating oil in the gearbox (i.e., the lowest end position of the gears in the gearbox; or, the height of the bottom of the lubricating oil tank is not lower than the position height of the lower end of the lower-position gears in the gearbox, and the height of the top of the lubricating oil tank is not higher than the position height of the upper end of the upper-position gears in the gearbox). The lubricating oil tank is connected to the lubricating oil inlet on the gearbox through an oil outlet pipe. An oil level detector is provided in the lubricating oil tank, and a float valve for controlling the on / off of the oil outlet pipeline is provided on the oil outlet pipe (preferably, the float is a mechanical type for sensing the oil level, and it is not easy to cause false alarms due to electrical failures in the weak current circuit).

[0009] A controller is connected between the oil level detector (such as a float) and the motor. When the oil level in the lubricating oil tank is higher than the oil level in the gear box, the float valve remains open, and the gears in the gear box are ensured to maintain contact with the lubricating oil through the siphon effect. When the low-position gear rotates, the lubricating oil at the bottom can be driven to the upper part of the gear. When the gears mesh and rotate, the lubricating oil is transferred to other gears until the high-position gears, ensuring that all gears are basically not short of oil, thereby avoiding wear or even damage to the gear box due to lack of oil.

[0010] Preferably, the gearbox comprises a transverse bevel gear with a vertically arranged rotating shaft, and a vertical bevel gear meshing with the transverse bevel gear with a horizontally arranged rotating shaft.

[0011] When the oil level in the lubricating oil tank is lower than the lowest position of the lubricating oil in the gearbox (the lower end of the vertical bevel gear), the oil level detector sends an oil level signal to the controller, and the controller can control the float valve to shut off to prevent the lubricating oil from flowing back from the gearbox into the lubricating oil tank; and an alarm can sound an alarm to remind the operator to replenish the lubricating oil tank (the controller can also connect and control the alarm through another control line. When there is an oil shortage signal, the controller controls the alarm to sound an alarm to remind the operator to check whether the lubricating oil tank or the machine is leaking oil and whether oil replenishment is needed). If the lubricating oil tank is not replenished in time, the controller will then control the motor to stop and the gearbox to stop working to avoid damage to the gearbox caused by lack of oil.

[0012] Beneficial effects:

[0013] The utility model utilizes the siphon principle to keep the lubricating liquid in the gear box flowing in automatically, thus saving an oil delivery pump; moreover, in normal conditions, due to the position restrictions of the top and bottom of the lubricating oil tank, the lubricating oil level in the gear box is neither higher than the uppermost end of the gear nor lower than the lowermost end of the gear, so that there is basically no lack of lubricating oil and no overflow of lubricating oil.

[0014] It also reduces the frequent opening and closing of the float valve, making it less likely to fail, reducing equipment costs, reducing the risk of oil shortage in the gearbox, and reducing downtime and maintenance costs.

[0015] Moreover, due to the quick response of the controller, the operation of the machine is instantly linked to the lubricating oil level. When the machine stops running, it can also remind the on-duty personnel to replenish the lubricating oil in time to ensure that the machine can operate for a long time without affecting the machine's working efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the connection structure of various components of the present application.

[0017] In the figure, 1-controller; 2-control line; 3-motor; 4-conveyor belt; 5-machine; 6-lubricating oil tank; 7-float valve; 8-signal line; 51-high gear; 52-low gear. Detailed implementation mode

[0018] As Figure 1 The automatic supervision device for the lubricating oil level of the gearbox shown. The gearbox is equipped with a motor 3 that can drive the gears in the gearbox to mesh and rotate. The gearbox is equipped with a lubricating oil tank 6. The height at which the lubricating oil tank 6 is placed ensures that the lubricating oil level therein is not lower than the lowest position of the lubricating oil in the gearbox or the position of the lower end of the low-position gear 52. The lubricating oil tank 6 is connected to the lubricating oil inlet on the gearbox through an oil outlet pipe. An oil level detector is provided in the lubricating oil tank 6, and a float valve 7 is provided on the oil outlet pipe.

[0019] The gearbox has a horizontal bevel gear with a vertically arranged rotating shaft and a vertical bevel gear meshing with it with a horizontally arranged rotating shaft.

[0020] The oil level detector is the float of the float valve 7. A controller 1 is connected between the oil level detector and the motor 3. When the oil level in the lubricating oil tank 6 is not lower than the lower end of the vertical bevel gear in the gearbox, the float valve 7 remains open. When the oil level in the lubricating oil tank 6 is lower than the lower end, the alarm sounds to remind the staff, and the controller 1 controls the float valve 7 to shut off.

Claims

1. An automatic supervision device for the lubricating oil level of a gearbox. The gearbox is equipped with an electric motor (3) capable of driving the gears in the gearbox to mesh and rotate. The gearbox is equipped with a lubricating oil tank (6). The lubricating oil tank (6) is provided with a high-level gear (51) and a low-level gear (52). It is characterized in that: The high-level gear (51) is a horizontal bevel gear with a vertically arranged rotating shaft, and the low-level gear (52) is a vertical bevel gear with a horizontally arranged rotating shaft. The upper side of the teeth of the low-level gear (52) meshes with the teeth of the high-level gear (51); The height of the bottom of the lubricating oil tank (6) is not lower than the position height of the lower end of the low-level gear (52), and the height of the top of the lubricating oil tank (6) is not higher than the position height of the upper end of the high-level gear (51); The lubricating oil tank (6) is communicated with the lubricating oil inlet on the gearbox through an oil outlet pipe, and a float valve (7) is arranged on the oil outlet pipe; An oil level detector is provided in the lubricating oil tank (6).

2. The automatic supervision device for the lubricating oil level of the gearbox according to claim 1, characterized in that: The oil level detector is the float of the float valve (7). A controller (1) is connected between the oil level detector and the electric motor (3). The controller (1) is connected through a signal line (8) to collect the height signal of the float, and the controller (1) is connected through a control line (2) to control the electric motor (3).

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