Gearbox oil spill prevention ventilation device and gearbox

Abstract

The utility model provides a gear box oil spill prevention ventilation device and a gear box, and relates to the technical field of gear box oil spill prevention, the gear box oil spill prevention ventilation device comprises a ventilation pipe assembly and a ventilation cap, the ventilation pipe assembly comprises a ventilation pipe assembly and a ventilation container, the ventilation pipe assembly is used for being connected with the gear box, and the ventilation container is used for being connected with the gear box; a damping adsorption part and an oil return cavity are arranged in the ventilation container, the ventilation pipe assembly extends in the ventilation container, a ventilation hole and an oil return hole are formed in the ventilation pipe assembly, and the oil return hole is connected with the oil return cavity. The airflow speed of gas entering the breather pipe assembly from the gear box can be reduced under the action of the damping adsorption part, and oil gas is condensed into oil drops along with temperature reduction and returns to the gear box through the oil return cavity and the oil return hole; and the oil gas subjected to multiple adsorption is finally discharged after passing through the ventilation plug, so that the situation of oil overflow leakage of the gear box is reduced from the two aspects of reducing the airflow speed and enhancing oil backflow.

Description

Technical Field

[0001] The utility model relates to the technical field of gear box oil overflow prevention, in particular to a gear box oil overflow prevention ventilation device and a gear box. Background Art

[0002] The gearbox is a common component in the power transmission process. When the internal gears are running at high speed, the temperature of the gearbox and its internal oil will rise. At the same time, the internal lubricating oil will be stirred up and atomized by the running gears. The air temperature inside the gearbox rises and the volume expands, and the atomized oil and gas are quickly discharged from the vent plug. The oil and gas gradually cool down during the discharge process, and re-condense into small oil droplets that adhere to the vent plug tube wall and outlet. A large number of small oil droplets gather to form oil droplets that slide down, causing the gearbox oil to leak. In response to the above defects, this application is proposed. Utility Model Content

[0003] The utility model aims to provide a gear box anti-oil overflow ventilation device and a gear box, which reduces the problem of oil overflow of the gear box under the premise of ensuring normal ventilation function.

[0004] In order to solve the above-mentioned problems, the utility model provides a gear box anti-oil overflow ventilation device, including a ventilation pipe assembly and a ventilation cap, the ventilation pipe assembly including a ventilation pipe assembly and a ventilation container, the ventilation pipe assembly is used to connect the gear box, the ventilation container is provided with a damping adsorption member and an oil return chamber, the ventilation pipe assembly extends in the ventilation container, the ventilation pipe assembly is provided with a ventilation hole and an oil return hole, the oil return hole is connected to the oil return chamber, the air flow carrying oil mist in the gear box enters the ventilation pipe assembly, enters the ventilation container through the ventilation hole, and under the action of the damping adsorption member, the flow velocity is reduced and the condensation effect is improved, the condensed oil refluxes through the oil return chamber and the oil return hole, and the remaining gas is discharged through the ventilation pipe assembly.

[0005] According to an embodiment of the utility model, the ventilation pipe assembly includes an air inlet pipe and an air outlet pipe which are separately arranged, and the oil return hole is arranged on the air inlet pipe.

[0006] According to an embodiment of the utility model, a curved channel is provided in the ventilation pipe assembly.

[0007] According to an embodiment of the utility model, a partition is provided in the ventilation container, and the air inlet pipe and the air outlet pipe are respectively provided on both sides of the partition to extend the residence time of the airflow.

[0008] According to an embodiment of the utility model, a plurality of ventilation holes are distributed in the circumferential direction of the ventilation pipe assembly.

[0009] According to an embodiment of the utility model, a plurality of ventilation holes are distributed in the axial direction of the ventilation pipe assembly.

[0010] According to an embodiment of the utility model, the oil return chamber is arranged at the bottom of the damping adsorption component.

[0011] According to an embodiment of the utility model, a support plate is provided in the ventilation container, a plurality of through holes are provided on the support plate, a damping adsorption member is provided on one side of the support plate, and the other side of the support plate is an oil return chamber.

[0012] According to an embodiment of the utility model, the damping adsorption component is damping cotton.

[0013] A gear box comprises the above-mentioned gear box anti-oil overflow ventilation device.

[0014] The beneficial effect of the utility model is that by providing a ventilation container and a damping adsorption component in the ventilation container, the gas entering the ventilation pipe assembly from the gear box will reduce the airflow velocity under the action of the damping adsorption component, and as the temperature drops, the oil and gas condense into oil droplets and return to the gear box through the oil return chamber and the oil return hole; the oil and gas that have undergone multiple adsorptions are finally discharged through the ventilation plug, thereby reducing the airflow velocity and strengthening the oil reflux, thereby reducing the oil leakage of the gear box. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0016] Figure 1 This is a schematic diagram of the structure of the gearbox anti-oil overflow ventilation device installed on the gearbox;

[0017] Figure 2 It is a structural schematic diagram of the anti-oil overflow ventilation device of the gear box;

[0018] Figure 3 is a structural schematic diagram of a vent pipe assembly;

[0019] Figure 4 is a schematic diagram of the structure of the intake pipe;

[0020] Figure 5 is a schematic diagram of the internal structure of the ventilation container;

[0021] Figure 6 A schematic cross-sectional view of a ventilation container. DETAILED DESCRIPTION

[0022] The following description is only used to disclose the utility model so that those skilled in the art can implement the utility model. The embodiments described below are only for example, and those skilled in the art can think of other obvious variations. The basic principles of the utility model defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other solutions that do not deviate from the spirit and scope of the utility model.

[0023] [Example 1]

[0024] A gearbox anti-oil overflow ventilation device, such as Figure 1 , including a vent pipe assembly 1 and a vent cap 3, the vent pipe assembly 1 includes a vent pipe assembly and a ventilation container 12, the vent pipe assembly is used to connect the gear box, the ventilation container 12 is provided with a damping adsorption member 123 and an oil return chamber 121, the vent pipe assembly extends in the ventilation container 12, and a vent hole and an oil return hole 111 are provided on the vent pipe assembly, the oil return hole 111 is connected to the oil return chamber 121, the air flow carrying oil mist in the gear box enters the vent pipe assembly, enters the ventilation container 12 through the vent hole, and reduces the flow rate and improves the condensation effect under the action of the damping adsorption member 123, the condensed oil refluxes through the oil return chamber 121 and the oil return hole 111, and the remaining gas is discharged through the vent pipe assembly.

[0025] like Figure 2-Figure 3 The vent pipe assembly can be set as one pipe or multiple pipes. In order to achieve a better oil overflow prevention effect, the present embodiment adopts a separately arranged air inlet pipe 11 and an air outlet pipe 13. One end of the air inlet pipe 11 and the air outlet pipe 13 is closed, and the other end is open, forming an air inlet and an air outlet. The oil return hole 111 is set on the air inlet pipe 11, and the air outlet is connected to the vent cap 3, which can be threadedly connected. The air inlet pipe 11 at the air inlet can be connected to the gear box 2 by threads.

[0026] Ventilation holes 112 and 131 are respectively provided near the closed ends of the air inlet pipe 11 and the air outlet pipe 13. The vent holes are provided in multiple groups in the circumferential and axial directions of the pipe. The ventilation container 12 is cylindrical. The damping adsorption member 123 can be made of damping cotton or damping net. In this embodiment, the damping cotton is soaked in oil and installed in the ventilation cylinder. The ventilation container 12 is provided with a partition plate 124 and a sieve-shaped support plate 122. Figure 5 , Figure 6 The ventilation container 12 is divided into an air inlet chamber, an oil return chamber 121 and an air outlet chamber by using a partition 124 and a sieve-shaped support plate 122. The air inlet pipe 11 extends in the air inlet chamber, and the air outlet pipe 13 extends in the air outlet chamber. The gas discharged from the air vent 112 of the air inlet pipe 11 needs to bypass the partition 124 to enter the air outlet chamber and be discharged through the air outlet pipe 13. In order to increase the residence time of the gas in the ventilation container 12, an opening can be made on the partition, or the gas can pass through the oil return chamber 121 and enter the air outlet chamber.

[0027] The oil return chamber 121 is arranged at the bottom of the damping adsorption member 123 so that the oil droplets can quickly flow back under the action of gravity.

[0028] Preferably, if Figure 3 The air inlet pipe 11 and the air outlet pipe 13 are both provided with curved channels, namely the curved channel 113 and the curved channel 132, and the curved channels are used to slow down the air flow speed.

[0029] During operation, the air in the gear box 2 will heat up and expand. The expanded hot air carries the oil mist into the intake pipe 11 of the breather assembly 1, and enters the intake cavity from the vent hole 112 on the pipe wall at its closed end. After the action of the damping cotton, the velocity of the hot air is reduced, and the carried oil and gas are re-adsorbed on the damping cotton. As the temperature drops, the oil and gas condense into oil droplets, and fall into the oil return cavity 121 through the sieve-like support plate 122, and then return to the gear box 2 through the oil return hole 111; the oil and gas enter the air outlet cavity through the sieve-like support plate 122 again, and the damping cotton in the air outlet cavity slows down and adsorbs the oil and gas again; the oil and gas that have been adsorbed multiple times finally enter the air outlet pipe 13 and the breather plug 3 through the vent hole 131 and are discharged.

[0030] A gear box, such as Figure 1 , including the above-mentioned gear box anti-oil overflow ventilation device.

[0031] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments. Without departing from the principles, the embodiments of the present invention may be deformed and modified in any way.

Claims

1. A gearbox anti-oil overflow ventilation device, characterized in that: The invention comprises a vent pipe assembly (1) and a vent cap (3), wherein the vent pipe assembly (1) comprises a vent pipe component and a ventilation container (12), wherein the vent pipe component is used to connect a gear box, wherein a damping adsorption component (123) and an oil return chamber (121) are arranged in the ventilation container (12), wherein the vent pipe component extends in the ventilation container (12), wherein a vent hole and an oil return hole (111) are arranged on the vent pipe component, wherein the oil return hole (111) is connected to the oil return chamber (121), wherein an air flow carrying oil mist in the gear box enters the vent pipe component, enters the ventilation container (12) through the vent hole, and under the action of the damping adsorption component (123), the flow velocity is reduced to improve the condensation effect, and the condensed oil is refluxed through the oil return chamber (121) and the oil return hole (111), and the remaining gas is discharged through the vent pipe component.

2. The gearbox anti-oil overflow ventilation device according to claim 1, characterized in that: The vent pipe assembly comprises an air inlet pipe (11) and an air outlet pipe (13) which are arranged separately, and the oil return hole (111) is arranged on the air inlet pipe (11).

3. The gearbox anti-oil overflow ventilation device according to claim 2 is characterized in that: A curved passage is provided in the vent pipe assembly.

4. The gearbox anti-oil overflow ventilation device according to claim 2 or 3, characterized in that: A partition (124) is provided in the ventilation container (12), and the air inlet pipe (11) and the air outlet pipe (13) are respectively provided on both sides of the partition (124) to extend the air flow residence time.

5. The gearbox anti-oil overflow ventilation device according to claim 4, characterized in that: A plurality of ventilation holes are distributed in the circumferential direction of the ventilation pipe assembly.

6. The gearbox anti-oil overflow ventilation device according to claim 5, characterized in that: A plurality of ventilation holes are distributed in the axial direction of the ventilation pipe assembly.

7. The gearbox anti-oil overflow ventilation device according to claim 4, characterized in that: The oil return chamber (121) is arranged at the bottom of the damping adsorption member (123).

8. The gearbox anti-oil overflow ventilation device according to any one of claims 5 to 7, characterized in that: A support plate (122) is arranged in the ventilation container (12), a plurality of through holes are arranged on the support plate (122), a damping adsorption member (123) is arranged on one side of the support plate (122), and the other side of the support plate (122) is an oil return chamber (121).

9. The gearbox anti-oil overflow ventilation device according to claim 1, characterized in that: The damping adsorption member (123) is damping cotton.

10. A gear box, characterized in that: The invention comprises a gearbox anti-oil overflow ventilation device as described in any one of claims 1 to 9.

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