阅读说明：本技术 一种减速机防喷油通气帽 (Speed reducer prevents oil spout ventilation cap ) 是由 常焕营 于 2019-09-17 设计创作，主要内容包括：一种减速机防喷油通气帽,由顶盖(1)、定位销(2)、集油罩(3)、封堵头(4)、缓冲板(5)、复位件(6)、集油槽(7)、外壁(8)、顶杆(9)构成,其特征在于：封堵头(4)、集油罩(3)、复位件(6)通过顶杆(9)连成一体,并穿过缓冲板(5)；定位销(2)固定在缓冲板(5)上,用于固定顶盖(1)；集油槽(7)位于出气孔处；减速机内部压力大时,通过顶动封堵头(4),进而顶开顶盖(1),排出气体,压力稳定后,复位件(6)使封堵头(4)复位,对出气孔形成密封,顶盖(1)同时复位,避免外污染进入。有益效果是解决目前减速箱通气帽喷油的问题。(The utility model provides a speed reducer prevents oil spout ventilation cap, comprises top cap (1), locating pin (2), collection oil cover (3), shutoff head (4), buffer board (5), the piece that resets (6), oil catch bowl (7), outer wall (8), ejector pin (9), its characterized in that: the blocking head (4), the oil collecting cover (3) and the reset piece (6) are connected into a whole through a mandril (9) and penetrate through the buffer plate (5); the positioning pin (2) is fixed on the buffer plate (5) and used for fixing the top cover (1); the oil collecting tank (7) is positioned at the air outlet; when speed reducer internal pressure was big, moved shutoff head (4) through the top, and then backed out top cap (1), exhaust, after the pressure stabilization, reset piece (6) made shutoff head (4) restore to the throne, and it is sealed to the pore formation of giving vent to anger, and top cap (1) restores to the throne simultaneously, avoids the external pollution to get into. The beneficial effects are that solve the problem of present reducing gear box ventilation cap oil spout.)

1. The utility model provides a speed reducer prevents oil spout ventilation cap, comprises top cap (1), locating pin (2), collection oil cover (3), shutoff head (4), buffer board (5), the piece that resets (6), oil catch bowl (7), outer wall (8), ejector pin (9), its characterized in that: the blocking head (4), the oil collecting cover (3) and the reset piece (6) are connected into a whole through a mandril (9) and penetrate through the buffer plate (5); the positioning pin (2) is fixed on the buffer plate (5) and used for fixing the top cover (1); the oil collecting tank (7) is positioned at the air outlet; when speed reducer internal pressure was big, moved shutoff head (4) through the top, and then backed out top cap (1), exhaust, after the pressure stabilization, reset piece (6) made shutoff head (4) restore to the throne, and it is sealed to the pore formation of giving vent to anger, and top cap (1) restores to the throne simultaneously, avoids the external pollution to get into.

2. The oil-injection-preventing ventilation cap of the speed reducer as claimed in claim 1, wherein: the top cover (1) is provided with 4 blind holes for matching with the positioning pins (2).

3. The oil-injection-preventing ventilation cap of the speed reducer as claimed in claim 1, wherein: the number of the positioning pins (2) is 4, and the length of the positioning pins is 1/2-3/4 of the depth of the blind hole of the top cover (1).

4. The oil-injection-preventing ventilation cap of the speed reducer as claimed in claim 1, wherein: the oil collecting cover (3) is conical, when gas is discharged, oil mist is blocked by the oil collecting cover (3) to form oil drops, and the oil drops fall into the oil collecting tank (7) at the bottom and return to the speed reducer.

5. The oil-injection-preventing ventilation cap of the speed reducer as claimed in claim 1, wherein: the upper part of the plugging head (4) is a hemisphere, the lower part of the plugging head is a circular truncated cone, so that the oil drops can be prevented from remaining on the plugging head (4), and the sealing head can be well sealed with the air outlet.

6. The oil-injection-preventing ventilation cap of the speed reducer as claimed in claim 1, wherein: the buffer plate (5) is a porous plate.

7. The oil-injection-preventing ventilation cap of the speed reducer as claimed in claim 1, wherein: the oil collecting groove (7) is in an inverted circular truncated cone shape and is concentric with the air outlet.

Technical Field

The invention belongs to the technical field of speed reducers, and particularly relates to an oil-spraying-preventing ventilation cap of a speed reducer.

Background

A speed reducer is a power transmission mechanism that uses a gear speed converter to reduce the number of revolutions of a motor (motor) to a desired number of revolutions and obtain a large torque. When the speed reducer enters a working state (operation), the temperature of the whole speed reducer can be quickly raised due to the friction between the speed reducer parts and the like. The temperature change of the speed reducer can cause the pressure change inside the speed reducer, the speed reducer is rotated to the operation high temperature at the static low temperature, and the air in the speed reducer can expand to enable the pressure inside the speed reducer to rise due to the expansion caused by heat and the contraction caused by cold.

In order to avoid the potential safety hazard caused by the pressure rise inside the speed reducer, the speed reducer is generally provided with a ventilation cap for ventilating the speed reducer to maintain the internal and external pressure balance of the speed reducer. The patent of application No. 201210027168.2 discloses a vent cap that is not easily damaged under harsh operating conditions. However, when the vent cap is used for exhausting, oil is easy to splash along with air, so that the speed reducer is easy to be stained with dust, and the vent cap is easy to be blocked by oil.

Disclosure of Invention

The invention mainly aims to provide an oil-spraying-preventing ventilation cap of a speed reducer, which solves the problem of oil spraying of the ventilation cap of the existing speed reducer.

In order to achieve the technical effects, the invention adopts the following technical scheme:

an anti-oil-spraying ventilation cap of a speed reducer comprises a top cover, a positioning pin, an oil collecting cover, a plugging head, a buffer plate, a resetting piece, an oil collecting tank, an outer wall and a push rod, wherein the plugging head, the oil collecting cover and the resetting piece are connected into a whole through the push rod and penetrate through the buffer plate; the positioning pin is fixed on the buffer plate and used for fixing the top cover; the oil collecting tank is positioned at the air outlet; when the internal pressure of the speed reducer is large, the blocking head is pushed to open the top cover, the gas is discharged, and after the pressure is stable, the resetting piece resets the blocking head to seal the gas outlet, and the top cover resets simultaneously to avoid external pollution.

The top cap is provided with 4 blind holes for supporting the locating pin.

The number of the positioning pins is 4, so that the top cover is uniformly stressed, and the length of the positioning pins is 1/2-3/4 of the depth of the blind hole of the top cover.

The oil collecting hood is conical, and when gas is discharged, oil mist is blocked by the oil collecting hood, forms oil drops, falls into the oil collecting tank at the bottom and returns to the speed reducer.

The upper part of the plugging head is a hemisphere, and the lower part of the plugging head is a round table, so that the oil drops can be prevented from remaining on the plugging head, and the sealing effect with the air outlet hole is good.

The buffer board is the perforated plate, can further cushion the air current, avoids the oil droplet to be taken out.

The oil collecting groove is in an inverted truncated cone shape, is concentric with the air outlet and is used for collecting returned oil drops.

The invention has the beneficial effects that: (1) the invention has simple structure, low cost and easy popularization and use.

The invention adopts the dual functions of the oil collecting cover and the buffer plate to slow down the airflow, collect oil drops and reduce the spray of oil mist.

The plugging head can reduce the residue of oil drops, and the oil collecting tank collects the oil drops, so that the loss of oil in the speed reducer is reduced.

Drawings

FIG. 1 is a front cross-sectional view of a speed reducer shaft anti-oil spray vent cap;

wherein: 1. a top cover; 2. positioning pins; 3. an oil collecting cover; 4. plugging a plug; 5. a buffer plate; 6. a reset member; 7. an oil sump; 8. an outer wall; 9. and a push rod.

Detailed Description

For further understanding of the present invention, the following embodiments are provided to illustrate the technical solutions of the present invention in detail, and the scope of the present invention is not limited by the following embodiments.