A kind of electric hoist lifting reducer exhaust device

Abstract

The utility model discloses a kind of electric hoist hoisting speed reducer exhaust devices, including outer exhaust pipe, connecting pipe and inner exhaust pipe;The inner exhaust pipe is vertically arranged in the reducer box, outer exhaust pipe is vertically arranged outside the reducer box, the opening of outer exhaust pipe and inner exhaust pipe is all upwards, the opening of inner exhaust pipe is higher than the oil level in the reducer box, outer exhaust pipe and inner exhaust pipe are communicated by connecting pipe, and connecting pipe penetrates the sidewall of the reducer box.The utility model utilizes the principle of communicating vessel to discharge gas inside the reducer box through outer exhaust pipe, and normal exhaust without oil leakage can be ensured when the reducer is vertically or horizontally installed, solving the oil leakage problem caused by the rotation direction when installation for traditional speed reducer.

Description

Technical Field

[0001] This utility model relates to the field of speed reducer technology, specifically to an exhaust device for an electric hoist lifting speed reducer. Background Technology

[0002] Due to the heavy load, the temperature inside the gearbox of a wire rope electric hoist is relatively high. When the temperature rises, pressurized gas is generated inside the gearbox. If this gas is not vented, it will flow along the seals of the input or output shaft to the outside of the gearbox, eventually causing oil leakage. A copper vent cap is typically used for venting. The vent cap is usually fixed by drilling a threaded hole in the gearbox housing. However, the threaded hole in the die-cast aluminum housing is pre-drilled during die-casting. If a hole is drilled directly without pre-drilling, potential die-casting defects such as porosity in the housing will increase the risk of air leakage during pressurization.

[0003] like Figure 5 and Figure 6 As shown, if the original exhaust cap is still used, the exhaust cap of the reducer will change from facing upwards to facing left, right, or downwards when the speed reduction rotation direction is required for installation. Once the position of the exhaust cap is lower than the oil level, oil will leak from the exhaust cap, especially when the direction of the exhaust cap is downwards, oil will leak directly. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide an exhaust device for an electric hoist lifting reducer. It uses the principle of communicating vessels to discharge the gas inside the reducer housing through the external exhaust pipe. Whether the reducer is installed vertically or horizontally, it can ensure normal exhaust without oil leakage. It solves the oil leakage problem caused by the need for rotation direction when installing traditional reducers and can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an exhaust device for an electric hoist lifting reducer, comprising an external exhaust pipe, a connecting pipe, and an internal exhaust pipe; the internal exhaust pipe is vertically installed inside the reducer housing, and the external exhaust pipe is vertically installed outside the reducer housing; the openings of both the external and internal exhaust pipes face upwards, and the opening of the internal exhaust pipe is higher than the oil level inside the reducer housing; the external and internal exhaust pipes are connected by a connecting pipe, which penetrates the side wall of the reducer housing.

[0006] Preferably, the connecting pipe is perpendicular to the external exhaust pipe and the internal exhaust pipe; the lower end of the external exhaust pipe is provided with a horizontal interface, on which a locking nut is fitted, and the horizontal interface is also provided with a limiting boss for limiting the locking nut; the lower end of the internal exhaust pipe is provided with a horizontal interface, on which a locking nut is fitted, and the horizontal interface is also provided with a limiting boss for limiting the locking nut; the two ends of the connecting pipe are respectively provided with external thread sections adapted to the locking nut and the locking nut.

[0007] Preferably, the reducer housing has a through hole on its side wall for the connecting pipe to pass through, and the connecting pipe has a retaining ring on its body. When the second locking nut is turned, it moves axially along the connecting pipe and causes the retaining ring to abut against the outer wall of the reducer housing.

[0008] Preferably, the connecting pipe is fitted with a sealing ring, which is located between the retaining ring and the outer wall of the reducer housing.

[0009] Preferably, a sealing gasket is provided between the horizontal interface of the connecting pipe and the external exhaust pipe and between the horizontal interface of the connecting pipe and the internal exhaust pipe.

[0010] Compared with the prior art, the beneficial effects of this utility model are: by setting an internal exhaust pipe inside the reducer housing and an external exhaust pipe outside the reducer housing, and then connecting the internal exhaust pipe and the external exhaust pipe through a connecting pipe, the gas inside the reducer housing is discharged through the external exhaust pipe by utilizing the principle of communicating vessels. Whether the reducer is installed vertically or horizontally, it can ensure normal exhaust without oil leakage, thus solving the oil leakage problem of traditional reducers. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the external exhaust pipe structure of this utility model; Figure 3 This is a schematic diagram of the connecting pipe structure of this utility model; Figure 4 This is an installation diagram of the present invention; Figure 5 Traditional installation diagram Figure 1 ; Figure 6 Traditional installation diagram Figure 2 .

[0012] In the diagram: 1. External exhaust pipe, 2. Locking nut one, 3. Connecting pipe, 4. Retaining ring, 5. Sealing ring, 6. Locking nut two, 7. Internal exhaust pipe. Detailed Implementation

[0013] The present invention can be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. In the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "front", "rear", "left", "right" indicating the orientation or positional relationship, they are only corresponding to the drawings of this application for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation.

[0014] Please see Figure 1-6 The present invention provides the following technical solution: Example 1: An exhaust device for an electric hoist lifting reducer includes an external exhaust pipe 1, a connecting pipe 3, and an internal exhaust pipe 7; the internal exhaust pipe 7 is vertically installed inside the reducer housing, and the external exhaust pipe 1 is vertically installed outside the reducer housing. The openings of both the external exhaust pipe 1 and the internal exhaust pipe 7 face upwards, and the opening of the internal exhaust pipe 7 is higher than the oil level inside the reducer housing. The external exhaust pipe 1 and the internal exhaust pipe 7 are connected by the connecting pipe 3, which penetrates the side wall of the reducer housing. It is understandable that by setting an internal exhaust pipe 7 inside the reducer housing and an external exhaust pipe 1 outside the reducer housing, and then connecting the internal exhaust pipe 7 and the external exhaust pipe 1 through a connecting pipe 3, the gas inside the reducer housing is discharged through the external exhaust pipe 1 using the principle of communicating vessels, thus solving the oil leakage problem caused by the need for rotation direction during installation of traditional reducers.

[0015] Example 2: Unlike Example 1, the connecting pipe 3 is perpendicular to the external exhaust pipe 1 and the internal exhaust pipe 7; the lower end of the external exhaust pipe 1 is provided with a horizontal interface, on which a locking nut 1 2 is fitted, and the horizontal interface is also provided with a limiting boss for limiting the locking nut 1 2; the lower end of the internal exhaust pipe 7 is provided with a horizontal interface, on which a locking nut 2 6 is fitted, and the horizontal interface is also provided with a limiting boss for limiting the locking nut 2 6; the two ends of the connecting pipe 3 are respectively provided with external thread sections that are adapted to the locking nut 1 2 and the locking nut 2 6. The external exhaust pipe 1 and one end of the connecting pipe 3 are connected by locking nut 12, and the other end of the internal exhaust pipe 1 and the connecting pipe 3 are connected by locking nut 26, which facilitates quick locking and separation. Furthermore, the side wall of the reducer housing is provided with a through hole for the connecting pipe 3 to pass through. The body of the connecting pipe 3 is provided with a retaining ring 4. When the locking nut 6 is turned, it moves axially along the connecting pipe 3 and makes the retaining ring 4 abut against the outer wall of the reducer housing. The body of the connecting pipe 3 is fitted with a sealing ring 5, which is located between the retaining ring 4 and the outer wall of the reducer housing. The internal exhaust pipe 7 and the connecting pipe 3 are connected by the locking nut 6. At the same time, the connecting pipe 3 also cooperates with the retaining ring 4 to fix the connecting pipe 3 to the side wall of the reducer housing. The operation is convenient. The sealing ring 5 is used to seal and prevent oil leakage between the connecting pipe 3 and the side wall of the reducer housing. In addition, sealing gaskets are provided between the horizontal interface of the connecting pipe 3 and the external exhaust pipe 1, and between the horizontal interface of the connecting pipe 3 and the internal exhaust pipe 7, to reduce oil leakage.

[0016] The parts of this utility model not described in detail are prior art. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that this utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and are intended to include all changes that fall within the meaning and scope of equivalents in the content of this utility model.

Claims

1. An electric hoist hoisting speed reducer exhaust device, characterized in that: It includes an external exhaust pipe (1), a connecting pipe (3), and an internal exhaust pipe (7); the internal exhaust pipe (7) is vertically installed inside the reducer housing, and the external exhaust pipe (1) is vertically installed outside the reducer housing. The openings of both the external exhaust pipe (1) and the internal exhaust pipe (7) face upwards. The opening of the internal exhaust pipe (7) is higher than the oil level inside the reducer housing. The external exhaust pipe (1) and the internal exhaust pipe (7) are connected by the connecting pipe (3), which penetrates the side wall of the reducer housing.

2. A hoist hoisting speed reducer exhaust device according to claim 1, characterized in that: The connecting pipe (3) is perpendicular to the external exhaust pipe (1) and the internal exhaust pipe (7); the lower end of the external exhaust pipe (1) is provided with a horizontal interface, which is fitted with a locking nut (2) and a limiting boss for the locking nut (2); the lower end of the internal exhaust pipe (7) is provided with a horizontal interface, which is fitted with a locking nut (6) and a limiting boss for the locking nut (6); the two ends of the connecting pipe (3) are respectively provided with external thread sections that are compatible with the locking nut (2) and the locking nut (6).

3. A hoist hoisting speed reducer exhaust device according to claim 2, characterized in that: The reducer housing has a through hole on the side wall for the connecting pipe (3) to pass through. The connecting pipe (3) has a retaining ring (4) on its body. When the locking nut (6) is turned, it moves axially along the connecting pipe (3) and the retaining ring (4) abuts against the outer wall of the reducer housing.

4. A hoist hoisting speed reducer exhaust device according to claim 3, characterized in that: The connecting pipe (3) is fitted with a sealing ring (5), which is located between the retaining ring (4) and the outer wall of the reducer housing.

5. The electric hoist hoisting speed reducer exhaust device according to claim 2, characterized in that: A sealing gasket is provided between the horizontal interface of the connecting pipe (3) and the external exhaust pipe (1) and between the horizontal interface of the connecting pipe (3) and the internal exhaust pipe (7).

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