reducer

Abstract

The utility model relates to a kind of reducers, the reducer has reducer housing piece and closed screw device, wherein, closed screw device has tubular component, separating wall component is arranged in the space region surrounded by tubular component, separating wall component divides the space region into two sub-space regions separated from each other, guide plate is provided on both sides on separating wall component, wherein, gap is formed between the inner wall of tubular component and each guide plate, the gap width of the gap is less than first threshold value, wherein, separating wall component has through-hole.

Description

Technical Field

[0001] This utility model relates to a speed reducer, which has a speed reducer housing and a closed thread device. Background Technology

[0002] It is known that the reducer is at least partially filled with oil and has a reducer housing component. Utility Model Content

[0003] Therefore, the purpose of this invention is to enable the speed reducer to operate reliably.

[0004] A key feature of the reducer according to this utility model, which includes a reducer housing and a closed thread device, is that the closed thread device has a tubular component.

[0005] In the space surrounded by tubular components—especially the internal space of the tubular components—partition wall components are arranged—particularly flat, and particularly rectangular.

[0006] In particular, the partition wall component divides the spatial region into two separate sub-spatial regions.

[0007] Among them, guide plates are fixed on both sides of the partition wall component.

[0008] A gap is formed between the inner wall of the tubular component and each guide plate, and the width of this gap is less than a first threshold.

[0009] The partition wall component has a partition wall through hole.

[0010] In particular, the tubular component has an external thread on its side facing the reducer housing, which screws into a through-hole in the reducer housing.

[0011] Its advantage is that different temperatures exist during the operation of the reducer, thus ventilation relieves the pressure on the seals of the reducer housing, as the pressure reaches equilibrium with the ambient air pressure. Without ventilation, the internal pressure of the reducer rises sharply at higher operating temperatures, causing the seals to fail from the critical pressure value. However, according to this invention, safety is thus improved, i.e., especially operational reliability, i.e., preventing the escape of oil, or especially oil foam generated in the internal space of the reducer during operation. During operation, the toothed portion moving into the oil sump, especially with its teeth, not only generates agitation losses but also produces oil foam. According to this invention, the tubular component is screwed into a through threaded hole in the reducer housing, guided to a ventilation thread that allows air to escape from the internal space to the environment, and the guide plate forces the oil foam to meander through the axial region of the tubular component covered by the partition wall component in the axial direction. Here, the correspondingly separated spatial regions, defined by the two guide plates, the partition wall component, and the inner wall of the tubular component, allow the oil foam to be mitigated and allow oil to flow through the guide plates and the gaps between the inner wall of the tubular component and each guide plate.

[0012] In one advantageous design, the mathematically hypothetical axis of the tubular component passes through the partition wall component. The advantage is that the partition wall component is centrally located within the tubular component, thus creating two sub-space regions of equal size within the tubular component.

[0013] In one advantageous design, the partition wall component is connected to a threaded sleeve that screws into a through-hole in the tubular component.

[0014] Preferably, the thread axis of the threaded sleeve is coaxial with the pipe axis. This has the advantage of easily achieving the retention of the partition wall components.

[0015] In an advantageous design, each guide plate is constructed as a semi-ellipse and / or has a semi-elliptical radial outer edge, particularly such that the gap width between the cylindrical inner wall of the tubular component and each guide plate is constant circumferentially, or the variation of this gap width circumferentially is less than one-tenth of the average gap width, wherein the cylindrical inner wall of the tubular component is located in the area covered by the guide plates axially, and particularly wherein the minor semi-axis of the ellipse is arranged in the partition wall section. The advantage is that, compared to the cylindrical embodiment of the tubular component, the semi-elliptical embodiment achieves a constant gap width despite the inclined arrangement of the guide plates.

[0016] In an advantageous design, all guide plates are spaced apart from each other along the axial direction, particularly along the tube axis of the tubular component. This has the advantage that the oil foam must meander through the resulting space, flowing back and forth between the first and second sides of the partition wall component.

[0017] In one advantageous design, a corresponding first guide plate is fixed to a first side of the partition wall component, and a corresponding guide plate adjacent to the first guide plate is arranged on the other side of the partition wall component. The advantage is that the oil foam must meander through the resulting space, i.e., it also flows back and forth between the first and second sides of the partition wall component.

[0018] In an advantageous design, the partition wall through-hole is arranged axially between a first guide plate (especially the connection point of the guide plate on the partition wall component) and a corresponding guide plate immediately adjacent to the first guide plate (especially the connection point of the adjacent guide plate on the partition wall component). The advantage is that oil foam must flow through the hole to flow axially through the tubular component.

[0019] In an advantageous design, the partition wall through-holes are arranged axially between two axially adjacent guide plates, particularly between the connecting portions of two adjacent guide plates. The advantage is that oil foam becomes stable after flowing through the holes, thus eliminating foam.

[0020] In one advantageous design, the guide plate is implemented in a flat manner. Its advantage is that it enables efficient oil flow, wherein the guide plate is arranged at a corresponding angle.

[0021] In an advantageous design, cooling ribs are constructed on the outer periphery of the tubular component, extending particularly in the circumferential direction and / or being evenly spaced from each other in the axial direction. This has the advantage of achieving improved heat dissipation.

[0022] In an advantageous design, the axial distance between the threaded sleeve and the corresponding guide plate decreases monotonically, and particularly strictly monotonically, as the distance between the guide plate and the partition wall component increases. This allows the guide plate to be arranged at an angle, thus enabling rapid and efficient oil flow.

[0023] In one advantageous design, the partition wall components and guide plates are not implemented as sheet metal, but rather as a single injection-molded part. This allows for cost-effective manufacturing.

[0024] In one advantageous design, the tubular component is threadedly connected to a ventilation threaded component on its side facing away from the gearbox housing. The advantage is that, while ventilation is implemented to create pressure balance between the internal space of the gearbox and the environment, oil foam or oil escapes through the centrally located tubular component.

[0025] In an advantageous design, the ventilated threaded component has radially penetrating, circumferentially spaced openings, wherein the internal space of the ventilated threaded component connects to the internal space of the tubular component. Its advantage is that it enables ventilation based on the radial direction along the pipe axis.

[0026] In a favorable design, the axial direction is parallel to the central axis of the tubular component.

[0027] The radial direction is the radial direction based on the central axis, and the circumferential direction is the circumferential direction based on the central axis.

[0028] In an advantageous design, a gap extending particularly in the axial direction is formed between the inner wall of the tubular component and the partition wall component, the width of which is less than a first threshold. The advantage is that a smooth flow of oil can pass through the gap.

[0029] For those skilled in the art, in particular from the problems raised and / or by comparison with the prior art, other meaningful combinations of the features of the specification and / or the features of the drawings can be derived. Attached Figure Description

[0030] The present invention will now be described in more detail with reference to the schematic diagram:

[0031] exist Figure 1 The oblique view shows a closed thread device with a multi-piece structure according to the present invention.

[0032] exist Figure 2 The image shows a cross-sectional view of a closed threaded device.

[0033] exist Figure 3 The image shows a closed threaded device in an exploded view.

[0034] exist Figure 4 The image shows a portion arranged within the interior space of a closed threaded device, viewed from a perspective view.

[0035] List of reference numerals

[0036] 1. Sealing ring

[0037] 2. Tubular components

[0038] 3. Partition wall components

[0039] 4. Ventilation threaded parts

[0040] 5 threaded sleeves

[0041] 6 guide plates

[0042] 7 Cooling ribs

[0043] 30 holes Detailed Implementation

[0044] As shown in the figure, the closed threaded device has a threaded sleeve 5, a partition wall component 3 inserted into the threaded sleeve, and the threaded sleeve screwed into the internal thread of the tubular component 2.

[0045] The partition wall component 3 extends the furthest in the axial direction, that is, especially in the direction parallel to the tube axis of the tubular component 2, which is coaxial with the thread axis of the threaded sleeve 5.

[0046] Preferably, the partition wall component 3 is implemented in a rectangular shape, especially as a cut or punched metal sheet.

[0047] Guide plates 6 are installed on both sides of the metal sheet at corresponding intervals along the axial direction. The guide plates 6 are arranged not only staggered but also alternately on both sides of the partition wall component 3. Thus, the first guide plate 6 is installed on the first side of the partition wall component 3, while the corresponding adjacent guide plate 6 is installed on the other side of the partition wall component 3.

[0048] Preferably, the partition wall component 3 bisects the internal space region of the tubular component 2 in a direction perpendicular to the axial direction.

[0049] Each guide plate 6 is divided into a semi-ellipse and is connected to the partition wall component 3 at its dividing line, in particular by material bonding or form-locking, wherein the dividing line is the minor axis of the ellipse.

[0050] The corresponding guide plate 6 extends to the inner wall of the tubular component 2, wherein no oil seal is formed. Therefore, the guide plate 6 does not need to be in contact with the inner wall of the tubular component 2, but a gap is allowed to be formed between the guide plate 6 and the inner wall of the tubular component 2, the gap width of which is no more than 0.5 mm.

[0051] Because the guide plate 6 is arranged at an angle, oil can flow radially outward along the guide plate 6 and from there through the gap between the guide plate 6 and the tubular component 2 or the non-oil-sealed contact area.

[0052] The axial distance between the corresponding guide plate 6 and the threaded sleeve 5 decreases monotonically, and especially strictly monotonically, with increasing distance from the partition wall 3. Therefore, each guide plate 6 is oriented at an angle.

[0053] The thread axis of the threaded sleeve 5, and therefore the tube axis of the tubular component 2, is preferably parallel to the vertical direction, i.e., the direction of gravity. In this orientation, oil flows out at the guide plate 6 and flows axially toward the threaded sleeve 5 through the area between the respective guide plate 6 and the inner wall of the tubular component 2.

[0054] The closed threaded device is preferably screwed into a through threaded hole in the housing of the reducer, the housing being at least partially filled with oil.

[0055] Therefore, the oil flowing out along the inner wall returns to the internal space of the reducer. For this purpose, the threaded sleeve 5 is hollow, so that oil can flow through the threaded sleeve 5, and thus the oil can flow through the threaded sleeve 5 in the axial direction.

[0056] The tubular component 2 has cooling ribs 7 on its outer side. The cooling ribs 7 extend particularly in the circumferential direction, especially relative to the axis of the tubular component 2.

[0057] A ventilation threaded component 4 is screwed onto the tubular component 2. For this purpose, the tubular component 2 has a threaded area on the side of its axial direction away from the threaded sleeve 5, and the ventilation threaded component 4 is threadedly connected to this threaded area by its mating threaded area.

[0058] The ventilation threaded component 4 has a radially through opening that leads into a hollow area surrounded by the ventilation threaded component, which in turn leads into the internal space of the tubular component 2.

[0059] The partition wall component 3 has a through hole 30. Here, such a hole 30 is introduced into the partition wall component 3 between two adjacent guide plates 6. Thus, oil foam generated in the reducer can pass through the threaded sleeve 5 and then meander along the axial direction between the guide plates 6.

[0060] However, the oil foam becomes stable in the corresponding space area defined by the inner wall of the tubular component 2, the partition wall component 3, and the two guide plates 6, so that the stable oil flows back into the oil sump along the inner wall of the tubular component 2, especially into the internal space area of ​​the reducer.

[0061] Preferably, at least four, especially eight, guide plates 6 are provided, such that at least two guide plates are arranged on the first side of the partition wall component 3 and at least two additional guide plates are arranged on the other side, especially such that at least four guide plates are arranged on the first side of the partition wall component 3 and at least four additional guide plates are arranged on the other side.

[0062] In other embodiments of the present invention, the guide plate 6 is not constructed as a metal sheet, but is made as a flat plastic wall, and the partition wall component 3 is made of plastic, particularly as an integral injection-molded part.

Claims

1. A speed reducer comprising a speed reducer housing and a closed threaded device, wherein, The closed threaded device has tubular components. Its features are, Partition wall components are arranged in the space area surrounded by tubular components. The partition wall component divides the spatial region into two separate sub-spatial regions. Among them, guide plates are provided on both sides of the partition wall component. A gap is formed between the inner wall of the tubular component and each guide plate, and the width of this gap is less than a first threshold. The partition wall component has a partition wall through hole. The tubular component has an external thread on the side facing the gearbox housing, which screws into a through-hole in the gearbox housing.

2. The reducer according to claim 1, characterized in that, The mathematically hypothetical tube axis of the tubular component passes through the partition wall component.

3. The reducer according to claim 1 or 2, characterized in that, The partition wall component is connected to a threaded sleeve, which is screwed into the through threaded hole of the tubular component, wherein the thread axis of the threaded sleeve is coaxial with the axis of the tubular component.

4. The reducer according to claim 1 or 2, characterized in that, Each guide plate is constructed in a semi-elliptical shape, such that the gap width between the inner wall of the cylindrical part of the tubular component located in the area covered by the guide plate in the axial direction and each guide plate is constant in the circumferential direction, or the variation of the gap width in the circumferential direction is less than one-tenth of the average gap width, and the minor semi-axis of the ellipse is arranged in the partition wall section.

5. The reducer according to claim 1 or 2, characterized in that, All the guide plates are spaced apart from each other along the axis of the tubular component.

6. The reducer according to claim 1 or 2, characterized in that, The corresponding first guide plate is fixed on the first side of the partition wall component, and the corresponding guide plate adjacent to the first guide plate is arranged on the other side of the partition wall component.

7. The reducer according to claim 1 or 2, characterized in that, The partition wall through holes are arranged axially between the first guide plate and the corresponding guide plate adjacent to the first guide plate.

8. The reducer according to claim 1 or 2, characterized in that, The partition wall through holes are arranged axially between two guide plates that are adjacent to each other along the axial direction.

9. The reducer according to claim 1 or 2, characterized in that, Each guide plate is implemented as a flat plate. Cooling ribs are constructed on the outer periphery of the tubular component, extending in the circumferential direction and being evenly spaced apart from each other in the axial direction.

10. The reducer according to claim 3, characterized in that, The axial distance between the threaded sleeve and the guide plate decreases monotonically as the distance between the guide plate and the partition wall component increases.

11. The reducer according to claim 1 or 2, characterized in that, The partition wall components and guide plates are not implemented as sheet metal, but are implemented together as an injection-molded part.

12. The reducer according to claim 1 or 2, characterized in that, The tubular component is threadedly connected to the ventilation threaded component on the side opposite to the reducer housing.

13. The reducer according to claim 12, characterized in that, The ventilated threaded component has radially penetrating openings spaced apart from each other in the circumferential direction, and the internal space region of the ventilated threaded component opens into the internal space region of the tubular component.

14. The reducer according to claim 1 or 2, characterized in that, The axial direction is parallel to the central axis of the tubular component, wherein the radial direction is the radial direction based on the central axis, and the circumferential direction is the circumferential direction based on the central axis.

15. The reducer according to claim 1 or 2, characterized in that, A gap extending in the axial direction is formed between the inner wall of the tubular component and the partition wall component, and the width of the gap is less than a first threshold.

Images