CN217003026U - Cooling system for shield machine main drive speed reducer - Google Patents
Cooling system for shield machine main drive speed reducer Download PDFInfo
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- CN217003026U CN217003026U CN202220230117.9U CN202220230117U CN217003026U CN 217003026 U CN217003026 U CN 217003026U CN 202220230117 U CN202220230117 U CN 202220230117U CN 217003026 U CN217003026 U CN 217003026U
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Abstract
The utility model provides a cooling system for a shield machine main drive speed reducer, which comprises a spiral cooling unit and a labyrinth cooling device, wherein the spiral cooling unit and the labyrinth cooling device are arranged in a speed reducer shell; the labyrinth type cooling device is arranged at the front end of the speed reducer shell and comprises a main body and a labyrinth route arranged in the main body; the spiral cooling unit is fixed in the middle of the speed reducer shell, a spiral cooling cavity is formed between the spiral cooling unit and the inner wall of the speed reducer shell, and a medium inlet of the spiral cooling cavity is communicated with a labyrinth outlet of a labyrinth route through a connecting channel. The system makes full use of the space, adopts the mode that the spiral cooling unit is welded inside the speed reducer shell and is connected with the labyrinth type cooling device in series, obviously increases the cooling and heat exchange area, not only can cool the high-speed end of the speed reducer, but also can improve the cooling effect on the low-speed end of the speed reducer.
Description
Technical Field
The utility model relates to the technical field of shield machine cooling, in particular to a cooling system for a shield machine main drive speed reducer.
Background
The shield machine is a special mechanical device for tunnel shield construction, and is widely applied to tunnel projects such as subways, railways, highways, municipal works, hydropower stations and the like. The shield machine is provided with a plurality of speed reducers for driving cutter heads, assembling pipe pieces, conveying waste residues and the like, wherein the main drive speed reducer in the main drive system is the worst in use condition. The main drive speed reducer has large power density, complex working condition and obvious heating in working, and the speed reducer is often cooled by a water cooling circulation system for ensuring the running temperature. In recent years, with the development of a dual-mode shield machine, the working conditions of high rotating speed, high power and longer-time continuous operation have high requirements on the cooling capacity of the speed reducer, under the working conditions, the speed reducer generates heat violently due to power losses of meshing, friction, stirring oil and the like of the speed reducer, and even if a cooling device is configured, the speed reducer is often operated for a short time, the temperature is overhigh and the speed reducer is forced to stop, so that the construction efficiency is influenced. The cooling device of the existing main driving speed reducer is limited by the overall dimension and generally has the problem of small heat exchange area; most cooling devices are arranged at the input end, so that the cooling effect on the final stage of the speed reducer is poor; in addition, there is a risk that the cooling medium will contaminate the lubricating oil.
Therefore, it is urgently needed to newly design a cooling system, which enhances the cooling effect without increasing the overall dimension of the original speed reducer, so that the speed reducer can continuously operate for a long time under the working conditions of high rotating speed and high power.
SUMMERY OF THE UTILITY MODEL
According to the technical problem, the cooling system for the shield machine main drive speed reducer is provided.
The technical means adopted by the utility model are as follows:
a cooling system for a shield machine main drive speed reducer comprises a spiral cooling unit and a labyrinth cooling device, wherein the spiral cooling unit and the labyrinth cooling device are arranged in a speed reducer shell;
the labyrinth type cooling device is arranged at the front end of the speed reducer shell and comprises a main body and a labyrinth route arranged in the main body, a labyrinth inlet of the labyrinth route is communicated with one end of the first cooling water pipe assembly, and the other end of the first cooling water pipe assembly penetrates out of the side wall of the speed reducer shell;
the spiral cooling unit is fixed in the middle of the speed reducer shell, a spiral cooling cavity is formed between the spiral cooling unit and the inner wall of the speed reducer shell, a medium inlet of the spiral cooling cavity is close to the front end of the speed reducer shell, a medium outlet is located at the tail end of the speed reducer shell, and the medium inlet is communicated with a labyrinth outlet of a labyrinth path through a connecting channel.
Preferably, the main body comprises a circular groove and an end cover for sealing the circular groove, the outer edge of an outer ring of the circular groove is fixedly connected with an annular bulge processed on the inner wall of the front part of the speed reducer shell through a bolt, a plurality of first radial rib plates which are uniformly distributed are fixed on the inner wall of the outer ring, and a gap is formed between each first radial rib plate and the outer wall of the inner ring; second radial rib plates are fixed on the outer wall of the inner ring of the annular groove between two adjacent first radial rib plates, one end, close to the inner wall of the outer ring, of one second radial rib plate is fixedly connected with the inner wall of the outer ring, and gaps are reserved between the other second radial rib plates and the inner wall of the outer ring; the second radial rib plate, the first radial rib plate, the annular groove and the end cover form a labyrinth path;
and a labyrinth inlet and a labyrinth outlet which are processed on the end cover are respectively arranged at two sides of the second radial rib plate fixedly connected with the inner wall of the outer ring.
Preferably, the spiral cooling unit comprises a cylinder and a spiral rib plate processed on the outer wall of the cylinder, the head end and the tail end of the cylinder are fixedly connected with the inner wall of the speed reducer casing in a sealing mode respectively, and the spiral rib plate is attached to the inner wall of the speed reducer casing.
Preferably, the connecting channel comprises a first blind hole, a second blind hole and a second cooling water pipe assembly;
the first blind hole is axially processed on the side wall of the speed reducer shell, and the second blind hole is radially processed on the side wall of the speed reducer shell and is communicated with one end, far away from the opening, of the first blind hole; one end of the second cooling water pipe assembly is communicated with the labyrinth outlet, the other end of the second cooling water pipe assembly is communicated with the middle of the first blind hole, the open end of the first blind hole is plugged with a first plug screw, and the open end of the second blind hole is plugged with a second plug screw.
Preferably, one end of the first cooling water pipe assembly, which penetrates out of the side wall of the speed reducer shell, and the medium outlet are respectively provided with an inlet screw plug and an outlet screw plug which are used for plugging the first cooling water pipe assembly and the medium outlet.
Preferably, the space between the circular groove and the end cover and the space between the outer ring and the annular bulge are respectively sealed by O-shaped sealing rings.
Preferably, the first cooling water pipe assembly and the second cooling water pipe assembly are identical in structure and comprise adjustable direction joints, water pipes and end through joints.
The first cooling water pipe assembly is communicated with a medium source, and a cooling medium flowing out of the medium source sequentially passes through the first cooling water pipe assembly, the labyrinth inlet, the labyrinth route, the labyrinth outlet, the first blind hole, the second blind hole, the medium inlet, the spiral cooling cavity and the medium outlet.
Compared with the prior art, the utility model has the following advantages:
1. the system fully utilizes the space, and the spiral cooling unit is welded in the speed reducer shell and connected with the labyrinth cooling device in series, so that the cooling and heat exchange area is obviously increased; and the heat exchange area in the prior art is small.
2. The system can cool the high-speed end of the speed reducer and extend into the top end of the speed reducer, so that the cooling effect of the low-speed end of the speed reducer can be improved; the prior art can only arrange one cooling device, and the two positions cannot be considered at the same time.
3. The system can be used as a transformation scheme for cooling and upgrading the speed reducer, and the cooling capacity of the speed reducer can be improved without changing the overall dimension of the speed reducer; which the prior art can not.
4. The system adopts two guiding modes of a labyrinth type and a spiral type, so that the fluidity of cooling water in the cooling device is effectively ensured; whereas the prior art does not comprise cooling water guiding means or is less effective.
5. The system has no mixing risk of lubricating oil and cooling medium, and all contact positions of the lubricating oil and the cooling medium are isolated by metal; in the prior art, the sealing is performed through a rubber sealing element, and the cooling medium is easy to pollute the lubricating oil due to improper installation or aging.
For the reasons, the utility model can be widely popularized in the field of speed reducer cooling and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a sectional view of a cooling system for a shield machine main drive speed reducer according to an embodiment of the present invention.
Fig. 2 is a schematic three-dimensional internal view of a cooling system for a shield machine main drive speed reducer according to an embodiment of the present invention.
Fig. 3 is a half-sectional three-dimensional view of a reducer housing in an embodiment of the utility model.
FIG. 4 is a three-dimensional view of a labyrinth cooling device in accordance with an embodiment of the present invention.
FIG. 5 is a top view of the interior of a labyrinth cooling device in accordance with an embodiment of the present invention.
Fig. 6 is a schematic view of a first cooling water pipe assembly and a second cooling water pipe assembly according to an embodiment of the present invention.
In the figure: 1. a speed reducer housing; 2. a spiral cooling unit; 21. a spiral cooling chamber; 22. a media inlet; 23. a media outlet; 24. a barrel; 25. a spiral rib plate; 3. a labyrinth cooling device; 31. a circular groove; 32. an end cap; 33. a first radial rib plate; 34. a second radial rib plate; 35. a labyrinth entrance; 36. a labyrinth outlet; 4. a first cooling water tube assembly; 41. the direction-adjustable joint; 42. a water pipe; 43. an end straight joint; 5. a connecting channel; 51. a first blind hole; 52. a second blind hole; 53. a second cooling water tube assembly; 54. a first plug screw; 55. a second plug screw; 56. an inlet bolt; 57. an outlet bolt.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the utility model. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. Any specific values in all examples shown and discussed herein are to be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the absence of any contrary indication, these directional terms are not intended to indicate and imply that the device or element so referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be considered as limiting the scope of the present invention: the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … … surface," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.
As shown in fig. 1 to 6, a cooling system for a shield machine main drive speed reducer comprises a spiral cooling unit 2 and a labyrinth cooling device 3 which are arranged in a speed reducer shell 1;
the labyrinth cooling device 3 is arranged at the front end of the speed reducer shell 1 and comprises a main body and a labyrinth route arranged in the main body, a labyrinth inlet 35 of the labyrinth route is communicated with one end of the first cooling water pipe component 4, and the other end of the first cooling water pipe component 4 penetrates through the side wall of the speed reducer shell 1; the main body comprises a circular groove 31 and an end cover 32 for sealing the circular groove 31, the outer edge of the outer ring of the circular groove 31 is fixedly connected with an annular bulge processed on the inner wall of the front part of the speed reducer shell 1 through a bolt, the inner wall of the outer ring is fixed with a plurality of first radial rib plates 33 which are uniformly distributed, and a gap is formed between the first radial rib plates 33 and the outer wall of the inner ring; second radial rib plates 34 are fixed on the outer wall of the inner ring of the annular groove 31 between two adjacent first radial rib plates 33, one end, close to the inner wall of the outer ring, of one second radial rib plate 34 is fixedly connected with the inner wall of the outer ring, and gaps are reserved between the other second radial rib plates 34 and the inner wall of the outer ring; the second radial rib plates 34, the first radial rib plates 33, the annular groove 31 and the end cover 32 form a labyrinth path; the two sides of the second radial rib plate 34 fixedly connected with the inner wall of the outer ring are respectively provided with a labyrinth inlet 35 and a labyrinth outlet 36 which are processed on the end cover 32. The space between the circular groove 31 and the end cover 32 and the space between the outer ring and the circular bulge are respectively sealed by O-shaped sealing rings.
The spiral cooling unit 2 is fixed in the middle of the speed reducer casing 1, a spiral cooling cavity 21 is formed between the spiral cooling unit 2 and the inner wall of the speed reducer casing 1, a medium inlet 22 of the spiral cooling cavity 21 is close to the front end of the speed reducer casing 1, a medium outlet 23 is located at the tail end of the speed reducer casing 1, and the medium inlet 22 is communicated with a labyrinth outlet 36 of the labyrinth path through a connecting channel 5. The spiral cooling unit 2 comprises a cylinder 24 and a spiral rib plate 25 processed on the outer wall of the cylinder 24, the head end and the tail end of the cylinder 24 are fixedly connected (welded) with the inner wall of the speed reducer casing 1 in a sealing manner, and the spiral rib plate 25 is attached to the inner wall of the speed reducer casing 1. The connecting channel 5 comprises a first blind hole 51, a second blind hole 52 and a second cooling water pipe assembly 53;
the first blind hole 51 is axially processed on the side wall of the speed reducer housing 1, and the second blind hole 52 is radially processed on the side wall of the speed reducer housing 1 and is communicated with one end, far away from the opening, of the first blind hole 51; one end of the second cooling water pipe assembly 53 is communicated with the labyrinth outlet 36, the other end is communicated with the middle part of the first blind hole 51, the open end of the first blind hole 51 is blocked by a first plug screw 54, and the open end of the second blind hole 52 is blocked by a second plug screw 55.
One end of the first cooling water pipe assembly 4, which penetrates out of the side wall of the speed reducer shell 1, and the medium outlet 23 are respectively provided with an inlet screw plug 56 and an outlet screw plug 57 which block the first cooling water pipe assembly 4 and the medium outlet 23. The medium outlet 23 and the first cooling water pipe assembly 4 are blocked when the cooling system is not in use.
The first cooling water pipe assembly 4 and the second cooling water pipe assembly 53 are identical in structure and respectively comprise an adjustable direction joint 41, a water pipe 42 and an end through joint 43, one end of the adjustable direction joint 41 is communicated with the labyrinth inlet 35/the labyrinth outlet 36, the other end of the adjustable direction joint is communicated with one end of the water pipe 42, the other end of the water pipe 42 is communicated with one end of the end through joint 43, and the other end of the end through joint 43 is communicated with the middle part of the medium source/the first blind hole 51.
The first cooling water pipe assembly 4 is communicated with a medium source, and a cooling medium flowing out of the medium source sequentially passes through the first cooling water pipe assembly 4, the labyrinth inlet 35, the labyrinth path, the labyrinth outlet 36, the first blind hole 51, the second blind hole 52, the medium inlet 22, the spiral cooling cavity 21 and the medium outlet 23 to cool the speed reducer. The cooling medium in this embodiment is cooling water.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (7)
1. A cooling system for a shield machine main drive speed reducer is characterized by comprising a spiral cooling unit and a labyrinth cooling device which are arranged in a speed reducer shell;
the labyrinth type cooling device is arranged at the front end of the speed reducer shell and comprises a main body and a labyrinth route arranged in the main body, a labyrinth inlet of the labyrinth route is communicated with one end of a first cooling water pipe assembly, and the other end of the first cooling water pipe assembly penetrates out of the side wall of the speed reducer shell;
the spiral cooling unit is fixed in the middle of the speed reducer shell, the spiral cooling unit and a spiral cooling cavity is formed between the inner walls of the speed reducer shell, a medium inlet of the spiral cooling cavity is close to the front end of the speed reducer shell, a medium outlet of the spiral cooling cavity is located at the tail end of the speed reducer shell, and the medium inlet is communicated with a labyrinth outlet of a labyrinth route through a connecting channel.
2. The cooling system for the shield machine main drive speed reducer according to claim 1, wherein the main body comprises a circular groove and an end cover for sealing the circular groove, the outer edge of the outer ring of the circular groove is fixedly connected with an annular bulge processed on the inner wall of the front part of the speed reducer shell through a bolt, the inner wall of the outer ring is fixed with a plurality of first radial rib plates which are uniformly distributed, and a gap is formed between the first radial rib plates and the outer wall of the inner ring of the circular groove; second radial rib plates are fixed on the outer wall of the inner ring of the annular groove between two adjacent first radial rib plates, one end, close to the inner wall of the outer ring, of one second radial rib plate is fixedly connected with the inner wall of the outer ring, and gaps are reserved between the other second radial rib plates and the inner wall of the outer ring; the second radial rib plate, the first radial rib plate, the annular groove and the end cover form the labyrinth path;
and the labyrinth inlet and the labyrinth outlet which are processed on the end cover are respectively arranged at two sides of the second radial rib plate fixedly connected with the inner wall of the outer ring.
3. The cooling system for the shield machine main drive speed reducer according to claim 1, wherein the spiral cooling unit comprises a cylinder and spiral rib plates processed on the outer wall of the cylinder, the head end and the tail end of the cylinder are fixedly connected with the inner wall of the speed reducer casing in a sealing manner respectively, and the spiral rib plates are attached to the inner wall of the speed reducer casing.
4. The cooling system for the shield machine main drive speed reducer according to claim 1, wherein the connecting passage comprises a first blind hole, a second blind hole and a second cooling water pipe assembly;
the first blind hole is axially processed on the side wall of the speed reducer shell, and the second blind hole is radially processed on the side wall of the speed reducer shell and is communicated with one end, far away from the opening, of the first blind hole; one end of the second cooling water pipe assembly is communicated with the labyrinth outlet, the other end of the second cooling water pipe assembly is communicated with the middle of the first blind hole, a first plug screw is plugged at the opening end of the first blind hole, and a second plug screw is plugged at the opening end of the second blind hole.
5. The cooling system for the shield machine main drive speed reducer according to claim 1, wherein an inlet screw plug and an outlet screw plug for plugging the first cooling water pipe assembly and the medium outlet are respectively arranged at one end of the first cooling water pipe assembly, which penetrates out of the side wall of the speed reducer casing, and the medium outlet.
6. The cooling system for the shield machine main drive speed reducer according to claim 2, wherein the annular groove and the end cover, and the outer ring and the annular protrusion are sealed by O-ring seals, respectively.
7. The cooling system for the main drive reducer of the shield tunneling machine according to claim 2, wherein the first cooling water pipe assembly and the second cooling water pipe assembly have the same structure and comprise direction-adjustable joints, water pipes and end through joints.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220230117.9U CN217003026U (en) | 2022-01-27 | 2022-01-27 | Cooling system for shield machine main drive speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220230117.9U CN217003026U (en) | 2022-01-27 | 2022-01-27 | Cooling system for shield machine main drive speed reducer |
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| CN217003026U true CN217003026U (en) | 2022-07-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220230117.9U Active CN217003026U (en) | 2022-01-27 | 2022-01-27 | Cooling system for shield machine main drive speed reducer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114458751A (en) * | 2022-01-27 | 2022-05-10 | 大连华锐重工集团股份有限公司 | Cooling system for shield machine main drive speed reducer |
| CN117967768A (en) * | 2024-03-29 | 2024-05-03 | 泰兴市华诚机电制造有限公司 | External dustproof heat dissipation pulley protection cover of speed reducer |
-
2022
- 2022-01-27 CN CN202220230117.9U patent/CN217003026U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114458751A (en) * | 2022-01-27 | 2022-05-10 | 大连华锐重工集团股份有限公司 | Cooling system for shield machine main drive speed reducer |
| CN114458751B (en) * | 2022-01-27 | 2023-08-18 | 大连华锐重工集团股份有限公司 | Cooling system for main driving speed reducer of shield tunneling machine |
| CN117967768A (en) * | 2024-03-29 | 2024-05-03 | 泰兴市华诚机电制造有限公司 | External dustproof heat dissipation pulley protection cover of speed reducer |
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