CN110725932A - Automatic air cooling device for mine hoist lubricating station - Google Patents

Abstract

The invention discloses an automatic air cooling device for a lubricating station of a hoister, which comprises an oil return pipe, the lubricating station and a reduction gearbox, wherein an oil outlet of the reduction gearbox is connected with an oil return port of the lubricating station through the oil return pipe, an oil outlet of the lubricating station is connected with an inlet end of an internal oil way exhaust pipe of an air cooling mechanism through an oil inlet pipe, an oil outlet end of the internal oil way exhaust pipe of the air cooling mechanism is connected with an oil inlet of the reduction gearbox through an oil outlet pipe, a fan is arranged on the side surface of the internal oil way exhaust pipe of the air cooling mechanism, an electric contact thermometer is arranged at the upper part of the lubricating station, a probe of the electric contact thermometer is arranged in the lubricating station, and an air cooling mechanism start-stop control circuit based on temperature induction. The invention can effectively avoid the problems that the prior water-cooled cooling device reduces the temperature by manually opening the valve to circulate tap water in the lubricating station, the cooling effect is not ideal, and simultaneously, the water resource is wasted.

Description

Automatic air cooling device for mine hoist lubricating station

Technical Field

The invention relates to the technical field of elevator lubricating stations, in particular to an automatic air cooling device for an elevator lubricating station.

Background

The hoister speed reducer is used as a key device of the hoister, and can generate a large amount of heat in the operation process, so that the temperature of lubricating oil in the speed reduction box is increased, the lubricating effect is reduced, and the stable operation of the speed reducer is directly influenced. Therefore, the lubricating oil in the reduction gearbox needs to be cooled, the lubricating oil in the reduction gearbox circulates through a lubricating station matched with a hoist, a water cooler is usually arranged in the lubricating station, one end of the water cooler is connected with tap water, and when the temperature of the oil in the lubricating station is too high, a post worker manually opens a valve to enable the tap water to be discharged after the tap water circulates in the lubricating station.

Disclosure of Invention

Aiming at the technical problems, the invention provides an automatic air cooling device for a lubricating station of a hoister, which can solve the problems that the existing water cooling type cooling device is unsatisfactory in cooling effect and causes water resource waste because a valve is manually opened to enable tap water to circulate in the lubricating station to be cooled.

In order to achieve the above purpose, the technical scheme of the invention is as follows:

the utility model provides an automatic air cooling device of lifting machine lubrication station, includes back oil pipe, lubrication station and reducing gear box, the oil-out of reducing gear box is connected with the oil return opening of lubrication station through returning oil pipe, the oil-out of lubrication station is through advancing oil pipe and air cooling mechanism's inside oil circuit calandria entrance connection, air cooling mechanism's inside oil circuit calandria oil outlet end through going out oil pipe with the oil inlet of reducing gear box is connected, air cooling mechanism's inside oil circuit calandria side is the fan, lubrication station upper portion sets up electric contact thermometer, electric contact thermometer's probe set up in inside the lubrication station, be provided with in the external power supply box of lubrication station and open and stop control circuit based on electric contact thermometer temperature sensing's air cooling mechanism.

The start-stop control circuit of the air cooling mechanism based on the temperature induction of the electric contact thermometer comprises an air cooling mechanism power supply electronic circuit, a start-stop control sub-circuit and an electric contact thermometer inductor sub-circuit which are respectively connected with a main power supply, wherein the air cooling mechanism power supply electronic circuit comprises a thermal relay, one end of the thermal relay is connected with a motor of the air cooling mechanism, the other end of the thermal relay is connected with the power supply sequentially through a main contact of a main contactor and an air switch, the start-stop control sub-circuit comprises a start relay contact, the start relay contact, a stop relay contact, the main contactor, a control power supply breaker and the power supply are connected in series to form a loop, a first main contactor auxiliary contact is connected in parallel to the start relay contact, a second main contactor auxiliary contact is connected in parallel to a series circuit formed by the start relay contact, the stop relay contact, the electric contact thermometer sensor circuit comprises an upper limit contact, a starting relay and a power supply which are connected in series to form a loop, the upper limit contact is connected with the series circuit of the starting relay in parallel to form a series circuit of a lower limit contact and a stopping relay, the starting relay is linked with the starting relay contact, the stopping relay is linked with the stopping relay contact, and the main contactor is linked with the main contactor main contact, the first main contactor auxiliary contact and the second main contactor auxiliary contact respectively.

The invention has the beneficial effects that: the invention monitors the temperature of lubricating oil in a lubricating station through an air cooling mechanism start-stop control circuit based on the temperature induction of an electric contact thermometer, when the temperature is higher than a set temperature, the air cooling mechanism start-stop control circuit based on the temperature induction of the electric contact thermometer drives a motor of the air cooling mechanism to operate, so that the lubricating oil pumped into an inner calandria of the air cooling mechanism by the lubricating station is continuously cooled by a fan, the cooled lubricating oil enters a reduction box through an oil outlet pipe and circulates in a reciprocating way until the temperature of the lubricating oil monitored by the air cooling mechanism start-stop control circuit based on the temperature induction of the electric contact thermometer is lower than the set value, the air cooling mechanism start-stop control circuit based on the temperature induction of the electric contact thermometer comprises an air cooling mechanism power supply electronic circuit, a start-stop control sub-circuit and an electric contact thermometer inductor sub-circuit, and the electric contact thermometer, when the temperature is higher than the preset value, the upper limit contact of the electric contact thermometer sensor sub-circuit is connected with the circuit, the starting relay is powered on, at the same time, the starting relay contact of the starting and stopping control sub-circuit is attracted, the main contactor is powered on, so that the auxiliary contact of the first main contactor and the auxiliary contact of the second main contactor are attracted, the operation indicator lamp is lightened, meanwhile, the main contactor main contact of the electronic circuit is attracted by the air cooling mechanism, the motor of the air cooling mechanism is powered on and operates, at the same time, the fan starts to operate, the lubricating oil is cooled and cooled, after continuous cooling, when the temperature of the lubricating oil is detected by the electric contact thermometer to be lower than the preset value, the lower limit contact of the electric contact thermometer is connected, the relay is stopped, the stop relay contact of the starting and stopping control sub-circuit is disconnected, the main contactor is de-, the operation pilot lamp extinguishes, and simultaneously, the main contactor main contact disconnection of air cooling mechanism confession electronic circuit, air cooling mechanism loses the electricity, the motor shut down of air cooling mechanism, whole process full automatization, need not personnel's participation, the labour has been liberated, work efficiency has been improved, and the cooling effect is good, can effectual reduction because of the too high problem of lifting machine warning shut down that leads to of lubricating station lubricating oil temperature, lubricating oil's rate of utilization has been increased substantially simultaneously, the cost is saved, the going on of normal production has been ensured, and better application prospect is achieved.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is an electrical schematic of the present invention.

In the figure: 1. an air cooling mechanism; 2. an electrical contact thermometer; 3. an oil inlet pipe; 4. an oil outlet pipe; 5. an oil return pipe; 6. a lubrication station; 7. a reduction gearbox; 8. lubricating oil; 9. a power indicator light; 10. an upper limit contact; 11. starting a relay; 11-1, starting a relay contact; 12. a main contactor; 12-1, main contactor main contacts; 12-2, a first main contactor auxiliary contact; 12-3, a second main contactor auxiliary contact; 13. an operation indicator light; 14. a lower limit contact; 15. stopping the relay; 15-1, stopping the relay contact; 16. controlling the power circuit breaker.

Detailed Description

As shown in figures 1 and 2, the automatic air cooling device for the lubricating station of the elevator comprises an oil return pipe 5, a lubricating station 6 and a reduction gearbox 7, wherein an oil outlet of the reduction gearbox 7 is connected with an oil return port of the lubricating station 6 through the oil return pipe 5, an oil outlet of the lubricating station 6 is connected with an inner oil way exhaust pipe inlet end of an air cooling mechanism 1 through an oil inlet pipe 3, an oil outlet end of the inner oil way exhaust pipe of the air cooling mechanism 1 is connected with an oil inlet of the reduction gearbox 7 through an oil outlet pipe 4, a fan is arranged on the side face of the inner oil way exhaust pipe of the air cooling mechanism 1, an electric contact thermometer 2 is arranged on the upper portion of the lubricating station 6, a probe of the electric contact thermometer 2 is arranged inside the lubricating station 6, an air cooling mechanism start-stop control circuit based on temperature induction of the electric contact thermometer is arranged in an external power supply box of the lubricating station 6, and, The air cooling mechanism power supply electronic circuit comprises a thermal relay, one end of the thermal relay is connected with a motor of the air cooling mechanism 1, the other end of the thermal relay is connected with a power supply through a main contactor main contact 12-1 and an air switch in sequence, the start-stop control sub-circuit comprises a start relay contact 11-1, a stop relay contact 15-1, a main contactor 12 and a control power supply circuit breaker 16, the start relay contact 11-1 is connected with a power supply in series to form a loop, a first main contactor auxiliary contact 12-2 is connected to the start relay contact 11-1 in parallel, a second main contactor auxiliary contact 12-3 is connected with an operation indicator lamp 13 in series and then connected with a series circuit formed by the start relay contact 11-1, the stop relay contact 15-1 and the main contactor 12 in parallel, the power indicator lamp 9 is connected in parallel to a series circuit of a second main contactor auxiliary contact 12-3 and an operation indicator lamp 13, an induction sub circuit of the electric contact thermometer comprises an upper limit contact 10, the upper limit contact 10 is connected with a starting relay 11 and a power supply in series to form a loop, the upper limit contact 10 is connected with a series circuit of an upper limit contact 14 and a stopping relay 15 in parallel to the series circuit of the starting relay 11, the starting relay 11 is linked with a starting relay contact 11-1, the stopping relay 15 is linked with a stopping relay contact 15-1, and the main contactor 12 is linked with a main contactor main contact 12-1, a first main contactor auxiliary contact 12-2 and a second main contactor auxiliary contact 12-3 respectively.

When the invention is used, the electric contact thermometer 2 arranged on the lubrication station 6 measures the temperature of the lubricating oil 8, the power supply breaker 16 is controlled to be closed, the control loop is electrified, the power supply indicator lamp 9 is lightened, when the temperature of the lubricating oil 8 reaches a set upper limit value, the upper limit contact 10 of the electric contact thermometer 2 is conducted, the starting relay 11 is electrified, the starting relay contact 11-1 is attracted, the main contactor 12 is electrified, the main contactor auxiliary point 12-2 attraction control loop is self-locked, the main contactor main contact 12-1 is attracted, the motor of the air cooling mechanism 1 is electrified to operate, the main contactor auxiliary point 12-3 is attracted, the operation indicator lamp 13 is lightened, the lubricating oil 8 in the lubrication station 6 is sucked out by a pump carried by the lubrication station 6 and then is driven into a calandria of the air cooling mechanism 1 through the oil inlet pipe 3, and a fan on the side of the calandria continuously acts, the temperature of the lubricating oil 8 in the discharge pipe is continuously reduced, the lubricating oil enters the reduction gearbox 7 from the oil outlet pipe 4 after being cooled, and finally the lubricating oil returns to the lubricating station 6 through the oil return pipe 5.

When the temperature of the lubricating oil 8 is reduced to a set lower limit value, a lower limit contact 14 of the electric contact thermometer 2 is conducted, the stop relay 15 is electrified, the contact 15-1 of the stop relay is disconnected, the main contactor 12 is electrified, the main contact 12-1 of the main contactor is disconnected, the auxiliary contacts 12-2 of the first main contactor and the auxiliary contacts 12-3 of the second main contactor are disconnected, the operation indicator lamp 13 is turned off, and the air cooling mechanism 1 stops operating.

Claims (2)

1. The utility model provides an automatic air cooling device in lubricated station of lifting machine, includes oil return pipe (5), lubricated station (6) and reducing gear box (7), the oil-out of reducing gear box (7) is connected its characterized in that through oil return pipe (5) and the oil return opening of lubricated station (6): the oil-out of lubrication station (6) is through advancing oil pipe (3) and the inside oil circuit calandria entrance connection of air cooling mechanism (1), the inside oil circuit calandria oil outlet end of air cooling mechanism (1) through go out oil pipe (4) with the oil inlet of reducing gear box (7) is connected, the inside oil circuit calandria side of air cooling mechanism (1) is the fan, lubrication station (6) upper portion sets up electric contact thermometer (2), the probe of electric contact thermometer (2) set up in inside lubrication station (6), be provided with in lubrication station (6) external power source box and open and stop control circuit based on electric contact thermometer temperature-sensing's air cooling mechanism.

2. The automatic air cooling device for the lubricating station of the elevator as claimed in claim 2, wherein: the start-stop control circuit of the air cooling mechanism based on temperature induction of the electric contact thermometer comprises an air cooling mechanism power supply electronic circuit, a start-stop control sub-circuit and an electric contact thermometer inductor sub-circuit which are respectively connected with a main power supply, wherein the air cooling mechanism power supply electronic circuit comprises a thermal relay, one end of the thermal relay is connected with a motor of the air cooling mechanism (1), the other end of the thermal relay sequentially passes through a main contactor main contact (12-1) and an air switch and is connected with the power supply, the start-stop control sub-circuit comprises a start relay contact (11-1), the start relay contact (11-1), a stop relay contact (15-1), a main contactor (12) and a control power circuit breaker (16) are connected with the power supply in series to form a loop, and a first main contactor auxiliary contact (12-2) is connected to the start relay contact (, the second main contactor auxiliary contact (12-3) and the operation indicator lamp (13) are connected in series and then connected in parallel with a series circuit consisting of the starting relay contact (11-1), the stopping relay contact (15-1) and the main contactor (12), the power indicator lamp (9) is connected in parallel on the series circuit of the second main contactor auxiliary contact (12-3) and the operation indicator lamp (13), the electric contact thermometer inductor circuit comprises an upper limit contact (10), the upper limit contact (10) is connected in series with the starting relay (11) and a power supply to form a loop, the upper limit contact (10) and the series circuit of the starting relay (11) are connected in parallel with a lower limit contact (14) and a series circuit of the stopping relay (15), the starting relay (11) and the starting relay contact (11-1) are linked with each other, and the stopping relay (15) and the stopping relay contact (15-1) are linked with each other, the main contactor (12) is in mutual linkage with the main contactor main contact (12-1), the first main contactor auxiliary contact (12-2) and the second main contactor auxiliary contact (12-3) respectively.

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