Cooling device for planetary reducer and planetary reducer
Patent Information
- Application Number
- CN202421261107.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-04
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-06-04
Smart Images
Figure CN222415909U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of shield machine cooling devices, in particular to a cooling device for a planetary reducer and a planetary reducer. Background Art
[0002] The shield machine is a special mechanical equipment used for tunnel shield construction, which is widely used in tunnel projects such as subways, railways, highways, municipal engineering, and hydropower. Among them, the main drive reducer is the core transmission component of the shield main drive system. It has the characteristics of low speed and heavy load, high power density, and high reliability. The active reducer often adopts a planetary reduction structure.
[0003] Currently, the cooling device of the planetary reduction structure of the common shield machine is mainly in the form of water cavity cooling. The existing cooling device of the water cavity cooling form requires an inner cylinder to be installed on the outer shell of the main drive mechanism, and a spiral cooling water flow cavity is set between the outer shell and the inner cylinder. Heat exchange and cooling are carried out by passing flowing cooling water into the cavity.
[0004] However, when the above cooling device is in use, since an inner cylinder needs to be added inside the outer shell, it occupies more installation space inside the outer shell, making the installation space smaller and affecting the installation of the ring gear of the planetary reduction mechanism, and increases the installation cost and manufacturing cost. Utility Model Content
[0005] The utility model provides a cooling device for a planetary reducer and a planetary reducer, aiming to solve the problem that the cooling device of the existing shield machine active reducer occupies more space inside the shell, thus affecting the installation of the planetary reducer mechanism.
[0006] The above technical objectives of the utility model are achieved through the following technical solutions:
[0007] In a first aspect, a cooling device for a planetary reducer is provided, comprising a reducer housing and a gear ring arranged on the inner side, the reducer housing and the gear ring together enclose a cooling medium channel, a medium inlet and a medium outlet are provided on the reducer housing, the medium inlet is connected to the inlet end of the cooling medium channel, the medium outlet is connected to the outlet end of the cooling medium channel, and a seal for sealing the cooling medium channel is provided between the reducer housing and the gear ring.
[0008] By adopting the above scheme, when in use, the cooling medium is passed through the medium inlet into the cooling medium channel, and the heat exchange cooling of the reducer housing and the gear ring is performed by the cooling medium. Since the outer wall of the reducer housing and the gear ring jointly form the cooling medium channel, on the one hand, the overall structure of the cooling device is compact, and there is no need to set an inner cylinder to form the cooling medium channel, and the space inside the reducer housing is small; on the other hand, the cooling medium is in direct contact with the gear ring, which improves the heat exchange efficiency between the cooling medium and the gear ring.
[0009] The utility model is further configured such that the cooling medium channel includes two zigzag sections arranged along the circumference of the reducer housing, the ends of the two zigzag sections close to each other are connected to each other, and the ends of the two zigzag sections far away from each other are respectively connected to the medium inlet and the medium outlet, and the zigzag section includes a plurality of end-to-end connected bending sections distributed along the axial direction of the reducer housing. The zigzag section extends the flow path of the cooling medium, so that the cooling medium can fully exchange heat with the reducer housing and the gear ring in contact.
[0010] The utility model is further configured that the bending section is S-shaped. Since the bending section is S-shaped, the entire bending section is more evenly distributed and is also easy to process.
[0011] The utility model is further configured as follows: the reducer housing includes a housing body, the inner side of the housing body is provided with a first convex ring and a second convex ring at intervals along the axial direction, a first vertical rib plate and a second vertical rib plate connected to the housing body are provided between the first convex ring and the second convex ring, one end of the first vertical rib plate is connected to the first convex ring, and a flow gap is provided between the other end and the second convex ring, the two ends of the second vertical rib plate are respectively connected to the first convex ring and the second convex ring, a plurality of sealing plates distributed along the axial direction of the housing body are provided between the first vertical rib plate and the second vertical rib plate, one end of the sealing plate is connected to the first vertical rib plate or the second vertical rib plate, and the adjacent sealing plates are arranged in an alternating manner, and the housing body, the first convex ring, the second convex ring, the first vertical rib plate, the second vertical rib plate, the sealing plate and the gear ring are jointly enclosed to form the cooling medium channel. The cooling medium channel is jointly enclosed by the housing body, the first convex ring, the second convex ring, the first vertical rib plate, the second vertical rib plate, the sealing plate and the gear ring to enable the cooling medium to flow between the reducer housing and the gear ring for sufficient heat exchange. The first convex ring, the second convex ring, the first vertical rib plate, the second vertical rib plate and the sealing plate all play a role in strengthening the outer shell body.
[0012] The utility model is further configured that sealing members are provided between the gear ring and the first convex ring and the second convex ring. The sealing members can enhance the sealing performance of the cooling cavity enclosed between the gear ring and the housing body.
[0013] The utility model is further configured that three sealing members are provided along the axial direction of the reducer housing, and the sealing performance between the gear ring and the housing body is further enhanced by the three sealing members.
[0014] The utility model is further configured that a third convex ring is provided at one end of the housing body close to the first convex ring, the first convex ring is located between the second convex ring and the third convex ring, the inner diameter of the third convex ring is smaller than the inner diameter of the first convex ring, and the third convex ring is connected to the gear ring by bolts. The gear ring can be conveniently fixed by the third convex ring.
[0015] The utility model is further configured that the reducer housing is provided with a medium discharge port connected to the cooling medium channel, and the medium discharge port is closed by a plug. The cooling medium in the cooling medium channel can be conveniently discharged through the medium discharge port.
[0016] The utility model is further configured that the medium inlet is arranged at one end of the reducer housing close to the power input. Since the speed of the reducer power input end is faster and the temperature generated inside is higher, arranging the medium inlet at the end close to the power input can more effectively cool and dissipate heat.
[0017] A second aspect provides a planetary reducer, comprising the above-mentioned cooling device for the planetary reducer.
[0018] In summary, the cooling device for a planetary reducer provided by the utility model has at least the following beneficial effects:
[0019] 1. The overall structure of the cooling device is compact and occupies less space inside the reducer housing.
[0020] 2. The heat exchange efficiency between the cooling medium and the gear ring is high. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any novel labor.
[0022] Figure 1 Schematic diagram of the three-dimensional structure of the reducer housing in the embodiment;
[0023] Figure 2 1 is a partial cross-sectional schematic diagram of the reducer housing of the embodiment (the flow trajectory of the cooling medium is marked with arrows in the figure);
[0024] Figure 3is a longitudinal cross-sectional schematic diagram of an embodiment (in which a planetary reduction mechanism in the background art is assembled);
[0025] Figure 4 yes Figure 3 Magnified view at A in the middle.
[0026] In the figure: 1. shell body, 2. first convex ring, 3. second convex ring, 4. third convex ring, 5. first vertical rib, 6. second vertical rib, 7. sealing plate, 8. gear ring, 9. cooling medium channel, 10. medium inlet, 11. medium outlet, 12. sealing member, 13. bolt, 14. medium discharge outlet, 15. plug, 16. planetary reduction mechanism. DETAILED DESCRIPTION
[0027] In order to make those skilled in the art better understand the technical solution of the utility model, the following Figure 1-4 The utility model is further described in detail with specific implementation methods.
[0028] See also Figure 1-4, a cooling device for a planetary reducer provided in this embodiment includes a reducer housing and a gear ring 8 arranged on the inner side. Among them, the gear ring 8 is a component of the planetary reduction mechanism 16 in the prior art. A cooling medium channel 9 is formed between the reducer housing and the gear ring 8, and a seal 12 for sealing the cooling medium channel 9 is provided between the reducer housing and the gear ring 8. A medium inlet 10 and a medium outlet 11 are provided on the reducer housing. The cooling medium channel 9 includes two zigzag sections arranged along the circumference of the reducer housing, the lower ends of the two zigzag sections are close to each other, and the ends of the two zigzag sections close to each other are connected to each other. The upper end of one of the zigzag sections is connected to the medium inlet 10, serving as the cooling medium inlet end of the cooling medium channel 9; the upper end of the other zigzag section is connected to the medium outlet 11, serving as the cooling medium outlet 11 end of the cooling medium channel 9. The zigzag section includes a plurality of end-to-end connected bending sections distributed along the axial direction of the reducer housing, and the bending section is preferably S-shaped. The reducer housing includes a housing body 1, and a first convex ring 2 and a second convex ring 3 are provided at intervals along the axial direction on the inner side of the housing body 1. The first convex ring 2 is located above the second convex ring 3, and a first vertical rib 5 and a second vertical rib 6 connected to the housing body 1 are provided between the first convex ring 2 and the second convex ring 3. The upper end of the first vertical rib 5 is connected to the first convex ring 2, and a flow gap for the cooling medium to pass through is provided between the lower end and the second convex ring 3. The upper and lower ends of the second vertical rib 6 are respectively connected to the first convex ring 2 and the second convex ring 3. A plurality of sealing plates 7 distributed along the axial direction of the housing body 1 are provided between the first vertical rib 5 and the second vertical rib 6, and one end of the sealing plate 7 is connected to the first vertical rib 5 or the second vertical rib 6, and adjacent sealing plates 7 are arranged alternately. Specifically, the arrangement of the sealing plate 7 corresponding to the zigzag section located on the left side of the second vertical rib plate 6 is as follows: the left end of the sealing plate 7 closest to the second convex ring 3 is connected to the second vertical rib plate 6, and there is a gap between the right end and the second vertical rib plate 6 for the cooling medium to pass through; the right end of the adjacent sealing plate 7 is connected to the second vertical rib plate 6, and there is a gap between the left end and the first vertical rib plate 5 for the cooling medium to pass through; the adjacent sealing plates 7 are staggered according to the above distribution method, so as to form an S-shaped flow groove, and the S-shaped flow groove and the gear ring 8 enclose the bending section of the cooling medium channel 9. With the second vertical rib plate 6 as the center, the two bending sections are symmetrically arranged, and the two bending sections are connected through the flow gap between the lower end of the first vertical rib plate 5 and the second convex ring 3. The inner sides of the housing body 1, the first convex ring 2, the second convex ring 3, the first vertical rib plate 5, the second vertical rib plate 6, the sealing plate 7 and the gear ring 8 are all in contact with the gear ring 8, and together enclose the cooling medium channel 9. The flow path of the cooling medium formed by the cooling medium channel 9 is referred to Figure 2 Through the two left and right zigzag sections distributed on the inner sides of the left and right halves of the shell body 1, the cooling medium can reach the lower end of the shell body 1 more quickly after entering the cooling medium channel 9 from the medium inlet 10, so as to cool the upper and lower ends of the ring gear 8 and the shell body 1 more quickly.
[0029] In order to enhance the sealing performance between the gear ring 8 and the housing body 1, a seal 12 is provided between the gear ring 8 and the first convex ring 2 and the second convex ring 3. The seal 12 is specifically provided as follows: a mounting groove for installing the seal 12 is provided on the outer side of the gear ring 8. The mounting groove is annular and is provided along the circumference of the gear ring 8. The seal 12 is embedded in the corresponding mounting groove. The inner sides of the first convex ring 2 and the second convex ring 3 correspond to three seals 12 provided along the circumference of the reducer housing. Correspondingly, mounting grooves corresponding to the seals 12 are provided on the outer wall of the gear ring 8. The first convex ring 2 and the second convex ring 3 clamp the corresponding seals 12 together with the gear ring 8. The seals 12 are sealing rings in the prior art. A third convex ring 4 is also provided on the inner side of the housing body 1. The third convex ring 4 is located on the upper side of the first convex ring 2. The inner diameter of the third convex ring 4 is smaller than the inner diameter of the first convex ring 2. A through hole is provided on the third convex ring 4 that passes through the upper and lower sides. A threaded hole corresponding to the through hole is provided on the upper end of the gear ring 8. The threaded hole does not penetrate the gear ring 8, and its opening depth is set as needed. The third convex ring 4 is connected to the gear ring 8 by a bolt 13, and the threaded section of the bolt 13 passes through the through hole and is threadedly connected with the corresponding threaded hole, thereby fixing the gear ring 8 and the housing body 1 together. In order to enhance the sealing performance, an annular seal 12 is provided between the third convex ring 4 and the upper end of the gear ring 8. The first convex ring 2, the second convex ring 3, the third convex ring 4, the first vertical rib plate 5, the second vertical rib plate 6 and the sealing plate 7 are integrally formed.
[0030] In order to facilitate the discharge of the cooling medium in the cooling medium channel 9, further, a medium discharge port 14 connected to the cooling medium channel 9 is opened on the reducer housing, and the medium discharge port 14 is closed by a plug 15. The cooling medium in the cooling medium channel 9 can be easily discharged by removing the plug 15. Since the speed of the end of the reducer power input is faster than that of the end of the power output, the temperature generated inside is higher, and the medium inlet 10 and the medium outlet 11 are both arranged at the end of the reducer housing close to the power input. Setting the medium inlet 10 at the end close to the power input can more effectively cool and dissipate heat. The medium inlet 10, the medium outlet 11 and the medium discharge port 14 are all arranged in the upper section of the housing body 1, so as to facilitate finding the medium inlet 10, the medium outlet 11 and the medium discharge port 14 when in use.
[0031] By adopting the above scheme, when in use, the cooling medium is passed through the medium inlet 10 into the cooling medium channel 9, and the cooling medium finally flows out from the medium outlet 11, and the heat exchange cooling of the reducer housing and the ring gear 8 is performed by the cooling medium. Among them, the cooling medium can specifically be cooling water, or other fluids with heat exchange effect. The cooling medium flows in an S shape under the guidance of the sealing plate 7, prolonging the contact time between the ring gear 8 and the housing body 1, and improving the heat exchange efficiency. The first convex ring 2, the second convex ring 3, the first vertical rib plate 5, the second vertical rib plate 6 and the sealing plate 7 all play a reinforcing role on the housing body 1.
[0032] See also Figure 3 Based on the same inventive concept, a planetary reducer is also provided, including the above-mentioned cooling device for the planetary reducer.
[0033] It should be noted that the words indicating direction in this article, such as up and down, are all based on Figure 1 The setting of the direction is only for the convenience of description and has no other specific meaning.
[0034] It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that an article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such article or device. In the absence of further restrictions, the elements defined by the sentence "comprising a ..." do not exclude the existence of other identical elements in the article or device including the above elements.
[0035] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the core idea of the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.
Claims
1. A cooling device for a planetary reducer, comprising a reducer housing and a gear ring (8) arranged inside, characterized in that: The reducer housing and the gear ring (8) together enclose a cooling medium channel (9); a medium inlet (10) and a medium outlet (11) are provided on the reducer housing; the medium inlet (10) is communicated with an inlet end of the cooling medium channel (9); the medium outlet (11) is communicated with an outlet end of the cooling medium channel (9); and a sealing member (12) for sealing the cooling medium channel (9) is provided between the reducer housing and the gear ring (8).
2. A cooling device for a planetary reducer as claimed in claim 1, characterized in that: The cooling medium channel (9) comprises two zigzag sections arranged along the circumference of the reducer housing, the ends of the two zigzag sections close to each other are connected to each other, and the ends of the two zigzag sections away from each other are respectively connected to the medium inlet (10) and the medium outlet (11), and the zigzag section comprises a plurality of bent sections connected end to end and distributed along the axial direction of the reducer housing.
3. A cooling device for a planetary reducer as claimed in claim 2, characterized in that: The bending section is S-shaped.
4. A cooling device for a planetary reducer as claimed in claim 2 or 3, characterized in that: The reducer housing comprises a housing body (1), a first convex ring (2) and a second convex ring (3) are arranged on the inner side of the housing body (1) at intervals along the axial direction, a first vertical rib plate (5) and a second vertical rib plate (6) connected to the housing body (1) are arranged between the first convex ring (2) and the second convex ring (3), one end of the first vertical rib plate (5) is connected to the first convex ring (2), and a flow gap is formed between the other end and the second convex ring (3), and two ends of the second vertical rib plate (6) are respectively connected to the first convex ring (2) and the second convex ring (3). A plurality of sealing plates (7) are arranged between the first vertical rib plate (5) and the second vertical rib plate (6) and are distributed along the axial direction of the shell body (1); one end of the sealing plate (7) is connected to the first vertical rib plate (5) or the second vertical rib plate (6); adjacent sealing plates (7) are arranged in a staggered manner; the shell body (1), the first convex ring (2), the second convex ring (3), the first vertical rib plate (5), the second vertical rib plate (6), the sealing plate (7) and the gear ring (8) together enclose the cooling medium channel (9).
5. A cooling device for a planetary reducer as claimed in claim 4, characterized in that: A sealing element (12) is provided between the gear ring (8) and the first convex ring (2) and the second convex ring (3).
6. A cooling device for a planetary reducer as claimed in claim 5, characterized in that: Three sealing members (12) are provided along the axial direction of the reducer housing.
7. A cooling device for a planetary reducer as claimed in claim 5 or 6, characterized in that: A third convex ring (4) is provided at one end of the shell body (1) close to the first convex ring (2); the first convex ring (2) is located between the second convex ring (3) and the third convex ring (4); the inner diameter of the third convex ring (4) is smaller than the inner diameter of the first convex ring (2); and the third convex ring (4) is connected to the gear ring (8) via bolts (13).
8. A cooling device for a planetary reducer as claimed in claim 1, characterized in that: The reducer housing is provided with a medium discharge port (14) which is in communication with the cooling medium channel (9), and the medium discharge port (14) is closed by a plug (15).
9. A cooling device for a planetary reducer as claimed in claim 1, characterized in that: The medium inlet (10) is arranged at an end of the reducer housing close to the power input.
10. A planetary reducer, characterized in that: It comprises a cooling device for a planetary reducer as described in any one of claims 1 to 9.