Hydraulic oil cooling device for hydraulic braking system of mine hoist

Abstract

The utility model relates to a hydraulic oil cooling device for a hydraulic braking system of a mine hoist. The hydraulic oil cooling device comprises a first hydraulic station, a second hydraulic station and a heat dissipation pipeline, the first hydraulic station and the second hydraulic station are correspondingly provided with a first oil tank and a second oil tank respectively; temperature sensors and liquid level meters are arranged in the first oil tank and the second oil tank; hydraulic oil is stored in the first oil tank, the second oil tank and the radiating pipeline; the output port of the first oil tank is communicated with the input port of the first oil tank through a heat dissipation pipeline to form a first oil change circulation; the output port of the second oil tank is communicated with the input port of the second oil tank through the heat dissipation pipeline to form a second oil change circulation; an output port of the heat dissipation pipeline is communicated with an input port of the heat dissipation pipeline through an oil return pipeline, and cooling circulation is formed. And a heat dissipation assembly is arranged on the heat dissipation pipeline. The cooling speed of hydraulic oil can be greatly increased, and the situation that one hydraulic station is high in temperature and the other hydraulic station is still not cooled is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydraulic brake technical field, concretely relates to a hydraulic oil cooling device for mine hoist hydraulic braking system. BACKGROUND

[0002] The mine hoist hydraulic braking system usually adopts the hydraulic station to provide the braking pressure, and the existing hydraulic station emits a large amount of heat energy in the use process, the temperature in the plant is 3-7 degrees Celsius higher than that outside when the equipment is normally operated, and the oil temperature in the oil tank of the hydraulic station often exceeds the technical setting value (60 degrees Celsius), causing the hoisting equipment to stop suddenly, and the room temperature reaches above 40 degrees Celsius in summer, resulting in that the problem is particularly frequent in summer and autumn.

[0003] The hydraulic station usually adopts two hydraulic stations, one for use and one for standby, and the hydraulic station is installed on the scene, and the natural cooling is used for the cooling of the hydraulic station, one hydraulic station temperature rises more than 60 degrees Celsius, and the other hydraulic station is used alternately.

[0004] During the high-temperature period in summer and the peak period of use, the oil temperature rises rapidly, the switching frequency of the main and standby hydraulic stations is fast, and the problem that one hydraulic station is high temperature and the other has not completed cooling often occurs, the temperature of the two hydraulic stations is high, the hoisting equipment stops frequently, causes harm to the hoisting equipment and the main hoisting rope, and affects safety.

[0005] Therefore, it is necessary to study a hydraulic oil cooling device for mine hoist hydraulic braking system. UTILITY MODEL CONTENTS

[0006] In view of this, the utility model aims at providing a hydraulic oil cooling device for mine hoist hydraulic braking system, which can effectively solve the problems of poor cooling effect and untimely cooling of the existing hydraulic station.

[0007] To achieve the above-mentioned purpose, the utility model adopts the technical scheme that:

[0008] A hydraulic oil cooling device for mine hoist hydraulic braking system, comprising a first hydraulic station, a second hydraulic station and a heat dissipation pipeline;

[0009] The first hydraulic station and the second hydraulic station are respectively provided with a first oil tank and a second oil tank;

[0010] Temperature sensors and liquid level meters are arranged in the first oil tank and the second oil tank;

[0011] The first oil tank, the second oil tank and the heat dissipation pipeline all store hydraulic oil;

[0012] The output port of the first oil tank is communicated with the input port of the first oil tank through the heat dissipation pipeline, forming a first oil replacement cycle;

[0013] The output port of the second oil tank is communicated with the input port of the second oil tank through the heat dissipation pipeline to form a second oil replacement circulation;

[0014] The output port of the heat dissipation pipeline is communicated with the input port of the heat dissipation pipeline through the oil return pipeline to form a cooling circulation;

[0015] The heat dissipation pipeline is provided with a heat dissipation assembly;

[0016] The first oil replacement circulation, the second oil replacement circulation and the cooling circulation only have one group open at the same time.

[0017] Further, the output port of the first oil tank is communicated with the input port of the first oil tank in sequence through the first output branch, the output trunk, the pressurized oil pump, the heat dissipation pipeline, the input trunk and the first input branch;

[0018] The first output branch is communicated with the output trunk through the first reversing valve;

[0019] The first input branch is communicated with the input trunk through the second reversing valve.

[0020] Further, the output port of the second oil tank is communicated with the input port of the second oil tank in sequence through the second output branch, the output trunk, the pressurized oil pump, the heat dissipation pipeline, the input trunk and the second input branch;

[0021] The second output branch is communicated with the output trunk through the first reversing valve;

[0022] The second input branch is communicated with the input trunk through the second reversing valve.

[0023] Further, the output port of the heat dissipation pipeline is communicated with the input port of the heat dissipation pipeline through the pressurized oil pump, the output trunk, the oil return pipeline and the input trunk;

[0024] One end of the oil return pipeline is communicated with the output trunk through the third reversing valve;

[0025] The other end of the oil return pipeline is communicated with the input trunk through the fourth reversing valve.

[0026] Further, the input trunk is provided with a filter.

[0027] Further, the pressurized oil pump is arranged at the input port and the output port of the heat dissipation pipeline.

[0028] Further, the first reversing valve, the second reversing valve, the third reversing valve, the fourth reversing valve, the pipeline pressurized oil pump, the temperature sensor and the liquid level meter are all connected with the controller for control.

[0029] Further, the heat dissipation pipeline is a straight-line back-fold structure.

[0030] Further, the heat dissipation assembly comprises a water cooling pool and a circulating water channel, the water cooling pool is communicated with the circulating water channel and contains circulating water; the heat dissipation pipeline is immersed in the water cooling pool.

[0031] The above technical scheme has the following beneficial effects:

[0032] The first hydraulic station and the second hydraulic station are used in a cycle alternation mode, when the first hydraulic station is overheated, the second hydraulic station is started, and the hydraulic oil tank of the first hydraulic station enters a first oil replacement cycle, high-temperature oil in the first oil tank is output to the heat dissipation pipeline, and the cooling oil in the heat dissipation pipeline is input to the first oil tank, so that the high-temperature oil in the first oil tank is replaced by the cooling oil, and the first hydraulic station after the replacement enters a standby state, at this time, the pipeline returns to a cooling cycle, and the heat dissipation pipeline circulates and cools the high-temperature oil and obtains the cooling oil; when the second hydraulic station is overheated, the first hydraulic station in the standby state can be quickly replaced, and the second hydraulic station enters a second oil replacement cycle to replace the cooling oil, compared with the natural cooling, the cooling speed of the hydraulic oil is greatly improved, the problems of poor cooling effect and untimely cooling treatment of the existing hydraulic station can be effectively solved, the situation that one hydraulic station is overheated while the other one has not completed cooling is avoided, the frequent emergency stop of the lifting equipment is avoided, the damage to the lifting equipment and the main lifting rope is reduced, and the stability and safety of the equipment are improved. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 It is a schematic view of the utility model;

[0034] Figure 2 It is a schematic view of the first oil replacement cycle;

[0035] Figure 3 It is a schematic view of the second oil replacement cycle;

[0036] Figure 4 It is a schematic view of the cooling cycle.

[0037] Reference signs: 1 is the first oil tank, 2 is the second oil tank, 3 is the heat dissipation pipeline, 4 is the oil return pipeline, 5 is the temperature sensor, 6 is the liquid level meter, 7 is the first output branch, 8 is the output trunk, 9 is the pressurized oil pump, 10 is the input trunk, 11 is the first input branch, 12 is the second output branch, 13 is the second input branch, 14 is the first reversing valve, 15 is the second reversing valve, 16 is the third reversing valve, 17 is the fourth reversing valve, 18 is the filter, 19 is the water cooling pool, and 20 is the circulating water channel. DETAILED DESCRIPTION

[0038] The utility model will be described in further detail in combination with the drawings and specific embodiments:

[0039] The embodiment aims to provide a hydraulic oil cooling device for a mine hoist hydraulic braking system, which is mainly used for cooling the hydraulic oil of the mine hoist hydraulic braking system, and can effectively solve the problems of poor cooling effect and untimely cooling of the existing hydraulic station.

[0040] A hydraulic oil cooling device for a mine hoist hydraulic braking system, which comprises a first hydraulic station, a second hydraulic station and a heat dissipation pipeline 3. Figure 1 The first hydraulic station and the second hydraulic station are respectively provided with a first oil tank 1 and a second oil tank 2.

[0041] The first oil tank 1 and the second oil tank 2 are respectively provided with a temperature sensor 5 and a liquid level meter 6 for judging the temperature and the liquid level of the hydraulic oil in the oil tank.

[0042] The first oil tank 1, the second oil tank 2 and the heat dissipation pipeline 3 all store hydraulic oil, and the hydraulic oil is of the same type.

[0043] As shown in Figure 2 , the output port of the first oil tank 1 is communicated with the input port of the first oil tank 1 through the heat dissipation pipeline 3 to form a first oil exchange cycle.

[0044] As shown in Figure 3 , the output port of the second oil tank 2 is communicated with the input port of the second oil tank 2 through the heat dissipation pipeline 3 to form a second oil exchange cycle.

[0045] The first output branch 7 is communicated with the output trunk 8 through the first reversing valve 14, and the first input branch 11 is communicated with the input trunk 10 through the second reversing valve 15. Specifically, the second output branch 12 is communicated with the output trunk 8 through the first reversing valve 14, and the second input branch 13 is communicated with the input trunk 10 through the second reversing valve 15. That is, the first output branch 7, the output trunk 8 and the second output branch 12 are simultaneously connected with the first reversing valve 14, the first reversing valve 14 is a three-way reversing valve, and the communication relationship between the first output branch 7 and the output trunk 8 and the second output branch 12 and the output trunk 8 can be controlled. The first input branch 11, the input trunk 10 and the second input branch 13 are simultaneously connected with the second reversing valve 15, the second reversing valve 15 is a three-way reversing valve, and the communication relationship between the first input branch 11 and the input trunk 10 and the second input branch 13 and the input trunk 10 can be controlled.

[0046] As Figure 4 The output port of the heat dissipation pipeline 3 is communicated with the input port of the heat dissipation pipeline 3 through the oil return pipeline 4, and a cooling circulation is formed. Specifically, the output port of the heat dissipation pipeline 3 is communicated with the input port of the heat dissipation pipeline 3 through the pressurizing oil pump 9, the output trunk 8, the oil return pipeline 4 and the input trunk 10, which is used to continuously cool the hydraulic oil in the heat dissipation pipeline, so as to obtain cooled oil. The actual temperature of the cooled oil is generally about 30 degrees Celsius.

[0047] One end of the oil return pipeline 4 is communicated with the middle part of the output trunk 8 through the third reversing valve 16, and the other end of the oil return pipeline 4 is communicated with the middle part of the input trunk 10 through the fourth reversing valve 17. The third reversing valve 16 and the fourth reversing valve 17 are both three-way reversing valves, which are used to control the opening and closing of the oil return pipeline 4.

[0048] The heat dissipation pipeline 3 is provided with a heat dissipation assembly, which is mainly used to improve the heat dissipation efficiency of the heat dissipation pipeline 3. The heat dissipation pipeline 3 has a straight line backfolding structure, which can further improve the heat dissipation efficiency. The heat dissipation assembly includes a water cooling pool 19 and a circulating water channel 20. The water cooling pool 19 contains cold water, and the heat dissipation pipeline 3 is immersed in the water cooling pool 19, so as to cool and dissipate heat of the heat dissipation pipeline 3 in the form of water cooling. The circulating water channel 20 circulates water, and the water cooling pool 19 is communicated with the circulating water channel 20, so that the water contained in the water cooling pool can circulate. The circulating water channel 20 can be in the form of a pipeline or a water channel. The cooling of the circulating water can be natural cooling, or the circulating water channel can be connected with other cooling systems. The structure and cooling principle of the circulating water channel are both known in the art, and will not be described here.

[0049] In other embodiments, the heat dissipation assembly can also adopt an air cooling system, including an axial flow fan and heat dissipation fins, the heat dissipation fins are arranged on the heat dissipation pipeline 3, for increasing the heat dissipation area of the heat dissipation assembly, the axial flow fan provides air flow towards the heat dissipation pipeline 3, to accelerate air flow, the specific structure and use principle of the heat dissipation fins are all adopted in the prior art, and will not be described here, aiming to accelerate the heat dissipation efficiency of the heat dissipation pipeline 3.

[0050] The first oil replacement cycle, the second oil replacement cycle and the cooling cycle only have one group open at the same time, and the switching between the cycles is mainly through the switching of the first switching valve 14, the second switching valve 15, the third switching valve 16 and the fourth switching valve 17.

[0051] The first switching valve 14, the second switching valve 15, the third switching valve 16, the fourth switching valve 17, the pipeline pressurized oil pump 9, the temperature sensor 5 and the liquid level meter 6 are all connected with the controller, and the controller can adopt a PLC controller, when the temperature sensor 5 detects that the hydraulic oil temperature is too high, such as detecting that the oil temperature exceeds 57 degrees Celsius, the controller controls the switching valves to enter the first oil replacement cycle or the second oil replacement cycle, and combines the data fed back by the liquid level meter 6 to ensure the liquid level state of the hydraulic oil in the oil tank. When the oil temperature drops to the specified standard state (such as 30 degrees Celsius), and the liquid level returns to the standard index, the controller controls the switching valves to return to the cooling cycle, to cool the high-temperature oil in the heat dissipation pipeline 3.

[0052] The specific operation process is as follows: the first hydraulic station is normally used, the second hydraulic station is standby, and under normal circumstances, the heat dissipation pipeline 3 is in the cooling cycle; when the first hydraulic station is overheated, the second hydraulic station is started, and the hydraulic oil tank of the first hydraulic station enters the first oil replacement cycle, the high-temperature oil in the first oil tank 1 is output to the heat dissipation pipeline 3, and the cooling oil in the heat dissipation pipeline 3 is input to the first oil tank 1, so that the high-temperature oil in the first oil tank 1 is replaced by cooling oil, and the first hydraulic station after replacing the cooling oil enters the standby state, at this time, the heat dissipation pipeline 3 returns to the cooling cycle to circulate and cool the high-temperature oil; when the second hydraulic station is overheated, the standby first hydraulic station takes over, and the second hydraulic station enters the second oil replacement cycle to replace the cooling oil, and the operation is repeated alternately.

[0053] Further, in order to filter and clean the hydraulic oil, a filter 18 is arranged on the input main channel 10, the filter 18 is a mesh filter 18, which is used to filter the hydraulic oil input into the oil tank.

[0054] Further, the pressurized oil pump 9 is arranged at the input and output of the heat dissipation pipeline 3, and will not be affected by the switching of the cycle mode, so as to ensure the oil pressure.

Claims

1. A hydraulic oil cooling device for a hydraulic braking system of a mine hoist, characterized in that: The first hydraulic station, the second hydraulic station and the heat dissipation pipeline (3) are provided; The first hydraulic station and the second hydraulic station are respectively provided with a first oil tank (1) and a second oil tank (2); The first oil tank (1) and the second oil tank (2) are provided with temperature sensors (5) and liquid level gauges (6); The first oil tank (1), the second oil tank (2) and the heat dissipation pipeline (3) all store hydraulic oil; The output port of the first oil tank (1) is communicated with the input port of the first oil tank (1) through the heat dissipation pipeline (3), forming a first oil replacement circulation; The output port of the second oil tank (2) is communicated with the input port of the second oil tank (2) through the heat dissipation pipeline (3), forming a second oil replacement circulation; The output port of the heat dissipation pipeline (3) is communicated with the input port of the heat dissipation pipeline (3) through the oil return pipeline (4), and a cooling circulation is formed; The heat dissipation pipeline (3) is provided with a heat dissipation assembly; The first oil replacement circulation, the second oil replacement circulation and the cooling circulation only have one group open at the same time.

2. The hydraulic oil cooling device for the hydraulic brake system of the mine hoist according to claim 1, characterized in that: The output port of the first oil tank (1) is communicated with the input port of the first oil tank (1) through the first output branch (7), the output trunk (8), the pressure oil pump (9), the heat dissipation pipeline (3), the input trunk (10) and the first input branch (11) in sequence; The first output branch (7) is communicated with the output trunk (8) through the first reversing valve (14); The first input branch (11) is communicated with the input trunk (10) through the second reversing valve (15).

3. The hydraulic oil cooling device for the hydraulic braking system of the mine hoist according to claim 2, characterized in that: The output port of the second oil tank (2) is communicated with the input port of the second oil tank (2) through the second output branch (12), the output trunk (8), the pressure oil pump (9), the heat dissipation pipeline (3), the input trunk (10) and the second input branch (13) in sequence; The second output branch (12) is communicated with the output trunk (8) through the first reversing valve (14); The second input branch (13) is communicated with the input trunk (10) through the second reversing valve (15).

4. The hydraulic oil cooling device for the hydraulic braking system of the mine hoist according to claim 3, characterized in that: The output port of the heat dissipation pipeline (3) is communicated with the input port of the heat dissipation pipeline (3) through the pressure oil pump (9), the output trunk (8), the oil return pipeline (4) and the input trunk (10); One end of the oil return pipeline (4) is communicated with the output trunk (8) through the third reversing valve (16); The other end of the oil return pipeline (4) is communicated with the input trunk (10) through the fourth reversing valve (17).

5. The hydraulic oil cooling device for the hydraulic braking system of the mine hoist according to any one of claims 2-4, characterized in that: The input trunk (10) is provided with a filter (18).

6. The hydraulic oil cooling device for a hydraulic braking system of a mine hoist according to any one of claims 2-4, characterized in that: The pressure oil pump (9) is arranged at the input port and the output port of the heat dissipation pipeline (3).

7. The hydraulic oil cooling device for the hydraulic braking system of the mine hoist according to any one of claims 2-4, characterized in that: The first reversing valve (14), the second reversing valve (15), the third reversing valve (16), the fourth reversing valve (17), the pipeline pressure oil pump (9), the temperature sensor (5) and the liquid level gauge (6) are all connected with the controller.

8. The hydraulic oil cooling device for the hydraulic braking system of the mine hoist according to any one of claims 1-4, characterized in that: The heat dissipation pipeline (3) is a straight-line type backfolding structure.

9. The hydraulic oil cooling device for the hydraulic braking system of the mine hoist according to claim 1, characterized in that: The heat dissipation assembly comprises a water cooling pool (19) and a circulating water channel (20), the water cooling pool (19) is communicated with the circulating water channel (20) and contains circulating water; the heat dissipation pipeline (3) is immersed in the water cooling pool (19).

Images