CN216643054U - Gear box and shield tunneling machine - Google Patents

Abstract

The utility model belongs to the technical field of shield machines, and discloses a gear box and a shield machine, which comprise a box body, wherein a primary gear train, a secondary gear train and a cooling unit are arranged in the box body, the cooling unit comprises a first cavity and a second cavity, the first cavity is hermetically arranged in the box body, two first water through holes communicated with the first cavity are formed in the cavity wall of the first cavity, one of the two first water through holes is used for water inlet, the other one of the two first water through holes is used for water outlet, and when cooling water is introduced into the first cavity, the first cavity is used for cooling the primary gear train; the second cavity is sealed to be arranged in the box body, two second water through openings communicated with the second cavity are formed in the wall of the second cavity, one of the two second water through openings is used for water inflow, the other one of the two second water through openings is used for water outflow, and when cooling water is introduced into the second cavity, the second cavity is used for cooling the primary gear train and the secondary gear train. The utility model can reduce the environmental temperature in the use of the wheel train in the box body, effectively improve the use working conditions of the primary wheel train and the secondary wheel train, improve the transmission efficiency and improve the reliability.

Description

Gear box and shield tunneling machine

Technical Field

The utility model relates to the technical field of shield tunneling machines, in particular to a gear box and a shield tunneling machine.

Background

The high-power shield machine owner drives the gear box, because the velocity ratio is big and the use space problem, the drive ratio is lower, and the heat-sinking capability is poor, adopts the not enough of natural cooling or the cooling of fan thermal power, and the gear box operating temperature is higher, and is big to each spare part harm in the gear box.

In the prior art, a water-cooling system is mostly adopted for cooling, as shown in fig. 1 and 2, a cooling water cavity 3 ' is arranged at a position of a high-speed stage gear train 1 ' (an input stage gear train), and cooling water pipes are respectively arranged at a water inlet 4 ' and a water outlet 5 ' of the cooling water cavity 3 ' to form a cooling system for cooling a gear box together with an external cooling water cooling device; the heat generated by the high-speed gear train 1 ' and the bearing 2 ' can be effectively taken away by introducing the circulating cooling water into the cooling water cavity 3 ', so that the temperature of the gear box in use can be controlled. However, the addition of such a water cooling system to the high power gearbox can reduce the temperature of the high speed gear train 1', but the temperature of the intermediate or low speed gear train of the high power gearbox is still high, and insufficient cooling still occurs.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a gear box and a shield tunneling machine, which can reduce the environmental temperature in the use of a gear train in a box body, effectively improve the use working conditions of a primary gear train and a secondary gear train, improve the transmission efficiency and improve the reliability.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a gear box, includes the box, be provided with one-level train, second grade train and cooling unit in the box, the cooling unit includes:

the first cavity is arranged in the box body in a sealing mode, two first water through ports communicated with the first cavity are formed in the cavity wall of the first cavity, one first water through port is used for water inlet, the other first water through port is used for water outlet, and when cooling water is introduced into the first cavity, the first cavity is used for cooling a primary wheel train;

the second cavity, the second cavity seal set up in the box, set up on the cavity wall of second cavity with two second through-flow mouths of second cavity intercommunication, two one of second through-flow mouth is used for intaking, and another is used for going out water, when the second cavity lets in the cooling water, be used for cooling off one-level train and second grade train.

Optionally, the first cavity and the second cavity are respectively annular cavities, a first retaining wall is arranged in the first cavity, and the first water openings are formed in two sides of the first retaining wall.

Optionally, cooling fins are respectively arranged in the first cavity and the second cavity, and the cooling fins are annular.

Optionally, the box includes:

the first box body comprises an inner box body and an outer box body which are hermetically connected with each other, the inner box body is arranged in the outer box body and forms a first cavity with the outer box body, and the two first water through holes are formed in the outer box body;

the second box body is connected with the outer box body, the second box body is connected with the periphery of the inner gear ring of the secondary gear train in a sealing mode to form a second cavity, and the two second water through holes are formed in the second box body.

Optionally, the rotating shaft of the primary gear train is rotatably connected to the inner box body through a bearing.

Optionally, the inner box body and the outer box body are provided with the first sealing ring therebetween, and the second sealing ring is arranged between the second box body and the inner gear ring.

Optionally, the first cavity and the second cavity are further provided with a first water discharge port and a second water discharge port, respectively.

In another aspect, a shield tunneling machine is provided, which comprises the gear box.

Optionally, the shield tunneling machine further includes two cooling water circulation devices, and the first cavity and the second cavity are respectively communicated with the two cooling water circulation devices.

Optionally, the shield machine further comprises a cooling water circulation device, one of the two first water through ports is communicated with one of the two second water through ports through a pipeline, and the pipeline is communicated with a water outlet of the cooling water circulation device.

The utility model has the beneficial effects that:

according to the gear box and the shield tunneling machine provided by the utility model, the cooling unit is provided with the first cavity and the second cavity, and the cooling water introduced into the first cavity is mainly used for taking away heat generated by the primary gear train and the bearing in use, so that the environmental temperature of the bearing and the primary gear train in use is reduced, the reliable work is ensured, and the service life is prolonged. The second cavity is mainly responsible for taking away heat generated by the primary gear train and the secondary gear train in use, so that the ambient temperature of the primary gear train and the secondary gear train in use is reduced, the use working condition of the large gear box on the primary gear train and the secondary gear train is effectively improved, and the transmission efficiency is improved; meanwhile, the strength of the internal structure of the box body is enhanced, and the requirement of the internal installation space of the box body is met. Any one of the two first water through ports can be communicated with a water inlet of external equipment, the other one of the two first water through ports is communicated with a water outlet of the external equipment, and the two first water through ports can be selected according to actual use requirements, so that the applicability is stronger. Because the pressure of cooling water is great, in order to improve the reliability of structure, prevent that the cooling water from getting into the box and polluting lubricating oil, first cavity and second cavity seal set up inside the box, have improved the reliability.

Drawings

FIG. 1 is a cross-sectional view of a prior art gearbox;

FIG. 2 is a schematic diagram of a cooling water chamber according to the prior art;

FIG. 3 is a cross-sectional view of a gearbox provided by an embodiment of the present invention;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;

FIG. 5 is a cross-sectional view taken at B-B of FIG. 3;

FIG. 6 is an enlarged view at C of FIG. 3;

fig. 7 is a schematic structural diagram of an inner box according to an embodiment of the present invention.

In the figure:

1', a high-speed gear train; 2', a bearing; 3', a cooling water cavity; 4', a water inlet; 5', a water outlet;

1. a box body; 11. a first case; 111. an inner box body; 112. an outer case; 1121. a first water passage port; 1122. a first drain port; 113. a first retaining wall; 12. a second case; 121. a second water vent; 122. a second water discharge port;

2. a first-order wheel train; 3. a secondary gear train; 31. an inner gear ring; 4. a bearing; 5. a first seal ring; 6. a second seal ring; 7. a heat sink; 1A, a first cavity; 1B and a second cavity.

Detailed Description

In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The embodiment provides a gearbox, as shown in fig. 3, the gearbox comprises a box body 1, a primary gear train 2, a secondary gear train 3 and a cooling unit are arranged in the box body 1, and the cooling unit comprises a first cavity 1A and a second cavity 1B; specifically, the first cavity 1A is hermetically arranged in the box body 1, two first water through ports 1121 which are communicated with the first cavity 1A are formed in the cavity wall of the first cavity 1A, one of the two first water through ports 1121 is used for water inlet, and the other one of the two first water through ports is used for water outlet; the second cavity 1B is hermetically arranged in the box body 1, two second water inlets 121 communicated with the second cavity 1B are formed in the cavity wall of the second cavity 1B, one of the two second water inlets 121 is used for water inlet, and the other is used for water outlet.

When the cooling water circulation device is used, one first water through hole 1121 is connected with external equipment and communicated with the first cavity 1A to introduce cooling water, the cooling water is discharged outwards through the other first water through hole 1121, the cooling water in the first cavity 1A is circulated, one second water through hole 121 is connected with the external equipment and communicated with the second cavity 1B to introduce the cooling water, the cooling water is discharged outwards through the other second water through hole 121, and the cooling water in the second cavity 1B is circulated. The cooling unit is through setting up first cavity 1A and second cavity 1B, and the cooling water that lets in the first cavity 1A mainly is used for taking away the heat that one-level train 2 and bearing 4 in use produced, reduces the ambient temperature of bearing 4 and one-level train 2 in use to guarantee reliable operation, increase of service life. The second cavity 1B is mainly responsible for taking away heat generated by the primary gear train 2 and the secondary gear train 3 in use, so that the ambient temperature of the primary gear train 2 and the secondary gear train in use is reduced, the use working condition of the large-scale gear box on the primary gear train 2 and the secondary gear train 3 is effectively improved, and the transmission efficiency is improved; meanwhile, the strength of the internal structure of the box body 1 is enhanced, and the requirement of the internal installation space of the box body 1 is met.

Any one of the two first water passing ports 1121 may be communicated with a water inlet of an external device, and the other one of the two first water passing ports is communicated with a water outlet of the external device, so that the two first water passing ports can be selected according to actual use requirements, and the applicability is stronger. Because the pressure of the cooling water is larger, the maximum pressure can reach 1.5MPa, and in order to improve the reliability of the structure and prevent the cooling water from entering the box body 1 to pollute the lubricating oil, the first cavity 1A and the second cavity 1B are hermetically arranged in the box body 1, so that the reliability is improved. Specifically, the primary gear train 2 (high-speed gear train) and the bearing 4 are main heat sources in the use process of the gearbox, the secondary gear train 3 generates much heat in the gearbox with large speed ratio and high rotating speed, and the gearbox in the embodiment is particularly suitable for a shield machine with high power, large speed ratio and high rotating speed.

Optionally, as shown in fig. 5, the first cavity 1A is an annular cavity, which increases the contact area between the cooling water and the primary gear train 2, and improves the cooling effect; in this embodiment, the first retaining wall 113 is disposed in the first cavity 1A, and the two first water passing ports 1121 are disposed at two sides of the first retaining wall 113 to separate the interior of the first cavity 1A, so as to prevent the cooling water from being directly discharged from the shortest path, thereby reducing the heat dissipation efficiency. The cooling water flows in from one of the two first water openings 1121, naturally rises along with the liquid level, and flows out from the other first water opening 1121, and is sufficiently contacted and cooled; further, the closer the two first water passing ports 1121 are to the first retaining wall 113, the better the cooling effect is.

Similarly, optionally, as shown in fig. 4, the second cavities 1B are respectively annular cavities, which increases the contact area between the cooling water and the secondary gear train 3; further, the two second water passing ports 121 are arranged on the same side of the second cavity 1B, when in use, the center line of the annular cavity is parallel to the horizontal direction, the two second water passing ports 121 are arranged on the upper side of the second cavity 1B, the annular cavity is divided into an upper part and a lower part similar to a U shape by the two second water passing ports 121, the annular cavity located at the lower part is used for passing cooling water, when the cooling water flows in from one of the two second water passing ports 121, the cooling water naturally rises along with the liquid level until flows out from the other second water passing port 121, and the cooling water is fully contacted and cooled; the annular cavity at the upper part is filled with air. The distance between the two second water passing openings 121 can be set according to specific conditions.

In other embodiments, the first cavity 1A may not be provided with the first retaining wall 113, and the two first water passing ports 1121 may also be both disposed on the same side of the first cavity 1A, and when in use, the two first water passing ports 1121 are disposed on the upper side of the first cavity 1A, and specific working principles and the like can refer to the second cavity 1B and the two second water passing ports 121, which are not described again.

Optionally, as shown in fig. 3 to 5 and 7, the first cavity 1A and the second cavity 1B are respectively provided with a heat sink 7, which can increase an effective heat dissipation area and further improve a cooling effect. Further, the heat sink 7 is annular, and the annular heat sink 7 is disposed along the annular cavity.

Optionally, as shown in fig. 3, the box 1 includes a first box 11 and a second box 12, the first box 11 includes an inner box 111 and an outer box 112 hermetically connected to each other, the inner box 111 is disposed inside the outer box 112 and forms a first cavity 1A with the outer box 112, two first water openings 1121 are disposed on the outer box 112, so that the structure of the box 1 is fully utilized for cooling, the structure is compact, and the box is separately disposed, and the manufacturing is convenient. Optionally, the second box 12 is connected to the outer box 112, the second box 12 is connected to the periphery of the inner gear ring 31 of the secondary gear train 3 in a sealing manner to form a second cavity 1B, the two second water inlets 121 are opened in the second box 12, so that the structure of the inner gear ring 31 is fully utilized, the occupied space is reduced, the structure is more compact, and the second cavity 1B is arranged on the periphery of the secondary gear train 3, so that the cooling effect of the secondary gear train 3 is improved. The first water through hole 1121 is disposed on the outer case 112, so as to be conveniently communicated with an external device, thereby avoiding occupying an internal space. The second water vent 121 is disposed on the second box 12, and is conveniently communicated with an external device, so as to avoid occupying an internal space.

More specifically, as shown in fig. 3, the rotating shaft of the primary gear train 2 is rotatably connected to the inner case 111 through the bearing 4, and the temperature of the lubricating oil for the bearing 4 is most directly lowered by the first cavity 1A. The gear on the primary wheel train 2 is arranged on one side of the inner box body 111 and close to the inner wall of the first cavity 1A, so that cooling is realized, and the cooling of the bearing 4, the gear and other structures is realized.

In this embodiment, as shown in fig. 3, the inner box 111 and the outer box 112 are connected by a fastener, but in other embodiments, the inner box and the outer box may be connected by welding or other methods. In this embodiment, the outer case 112 and the second case 12 are connected by a fastener, but in other embodiments, they may be welded or connected in other manners. Alternatively, the inner casing 111 and the outer casing 112 may be an integral structure, the outer casing 112 and the second casing 12 may be an integral structure, and the first casing 11 and the second casing 12 are an integral structure, which are not limited. Further, the case 1 may be a unitary structure made by casting. In this embodiment, the inner casing 111, the outer casing 112, and the second casing 12 are cast parts. In this embodiment, the fasteners are bolts. Specifically, at least one of the inner box 111 and the outer box 112 is provided with a groove, and a water cavity is formed after connection, in this embodiment, the groove is formed by casting the inner box 111. Specifically, the inner case 111 and the first retaining wall 113 are of an integral structure. In this embodiment, a groove is formed on the outer periphery of the ring gear 31 by machining, and a water chamber is formed after the groove is connected to the second casing 12. In other embodiments, if other manufacturing processes are adopted, the retaining wall may be disposed without limitation when the retaining wall structure is conveniently formed in the second cavity 1B.

Specifically, as shown in fig. 3 and 6, the gearbox further includes a first sealing ring 5 and a second sealing ring 6, the first sealing ring 5 is disposed between the inner box 111 and the outer box 112, and the second sealing ring 6 is disposed between the second box 12 and the inner gear ring 31, so as to respectively realize sealed connection. Specifically, mounting grooves are respectively formed in the outer peripheral surface of the inner ring gear 31 and the inner box 111, the first seal ring 5 and the second seal ring 6 are respectively mounted on the mounting grooves, and the prior art can be referred to for a specific structure.

Optionally, the first drainage opening 1122 and the second drainage opening 122 are formed in the second cavity 1B of the first cavity 1A, and after cooling is completed, the first drainage opening 1122 can be opened to completely drain the cooling water in the first cavity 1A, so that rusting accumulation is avoided, and icing is avoided when the ambient temperature is low. Similarly, optionally, a second water outlet 122 is formed in the second cavity 1B to avoid rust accumulation and avoid icing when the ambient temperature is low.

The embodiment also provides a shield tunneling machine which comprises the gear box. Through adopting foretell gear box, the cooling unit reduces the ambient temperature in one-level train 2 and the use of second grade wheel through setting up first cavity 1A and second cavity 1B, has improved the result of use and has prolonged life. The use working condition of the gear box after being upsized to the primary gear train 2 and the secondary gear train 3 is effectively improved, and the transmission efficiency is improved; meanwhile, the strength of the internal structure of the box body 1 is enhanced, and the requirement of the internal installation space of the box body 1 is met.

Specifically, the primary gear train 2 and the high-speed gear train and the bearing 4 are main heat sources in the use process of the gearbox, the secondary gear train 3 generates much heat in the gearbox with large speed ratio and high rotating speed, and the gearbox in the embodiment is particularly suitable for a shield machine with high power, large speed ratio and high rotating speed.

Optionally, the shield tunneling machine further comprises two cooling water circulation devices, the first cavity 1A and the second cavity 1B are respectively communicated with the two cooling water circulation devices, and the first cavity 1A and the second cavity 1B are connected in parallel; when the cooling device is used, the first cavity 1A and the second cavity 1B can be communicated at the same time, cooling water flows in and flows out at the same time, and the cooling effect is best; or when in use, one of the two is communicated, so that the energy consumption is reduced; the device can be reasonably communicated and used according to actual requirements.

Optionally, the shield machine further includes a cooling water circulation device, one of the two first water passing ports 1121 and one of the two second water passing ports 121 are communicated through a pipeline, the pipeline is communicated with a water outlet of the cooling water circulation device, cooling water enters the first cavity 1A from the cooling water circulation device and then enters the second cavity 1B, and cooling water of the second cavity 1B is discharged again, that is, the first cavity 1A and the second cavity 1B are connected in series, so that the cooling water circulation device is reduced in use, and the cost is reduced. Further, the first water passing port 1121 and the second water passing port 121 may be connected by a hose, and the hose is disposed outside the box body 1, so as to avoid occupying an internal space.

Further, the shield machine can be provided with two cooling water circulation devices, the two cooling water circulation devices are respectively communicated with the first cavity 1A and the second cavity 1B through pipelines, meanwhile, the first cavity 1A and the second cavity 1B are communicated through pipelines, and control valves are arranged on the pipelines, so that the cooling unit has three cooling modes: a first cooling mode: the first cavity 1A and the second cavity 1B are independently used; and a second cooling mode: the first cavity 1A and the second cavity 1B are connected in series for use; a third cooling mode: the first cavity 1A and the second cavity 1B are used in parallel; the cooling mode can be reasonably used according to actual requirements, and the applicability is good.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. The utility model provides a gear box, its characterized in that includes box (1), be provided with one-level train (2), second grade train (3) and cooling unit in box (1), the cooling unit includes:

the first cavity (1A) is hermetically arranged in the box body (1), the wall of the first cavity (1A) is provided with two first water through holes (1121) communicated with the first cavity (1A), one of the two first water through holes (1121) is used for water inlet, the other one of the two first water through holes is used for water outlet, and when cooling water is introduced into the first cavity (1A), the first cavity (1A) is used for cooling the primary wheel train (2);

second cavity (1B), second cavity (1B) sealed set up in box (1), seted up on the cavity wall of second cavity (1B) with two second water access ports (121) of second cavity (1B) intercommunication, two second water access ports (121) one is used for into water, and another is used for going out water, when second cavity (1B) lets in the cooling water, be used for the cooling one-level train (2) with second grade train (3).

2. The gearbox according to claim 1, wherein the first cavity (1A) and the second cavity (1B) are annular cavities, a first retaining wall (113) is disposed in the first cavity (1A), and two first water openings (1121) are disposed on two sides of the first retaining wall (113).

3. Gearbox according to claim 2, characterised in that cooling fins (7) are arranged inside the first cavity (1A) and the second cavity (1B), respectively, which cooling fins (7) are ring-shaped.

4. Gearbox according to claim 1, in which the said box (1) comprises:

the first box body (11) comprises an inner box body (111) and an outer box body (112) which are mutually connected in a sealing manner, the inner box body (111) is arranged inside the outer box body (112), the inner box body and the outer box body (112) form the first cavity (1A), and the two first water through openings (1121) are formed in the outer box body (112);

the second box body (12) is connected with the outer box body (112), the second box body (12) is connected with the periphery of an inner gear ring (31) of the secondary gear train (3) in a sealing mode to form a second cavity (1B), and the two second water through openings (121) are formed in the second box body (12).

5. A gearbox according to claim 4 in which the axis of rotation of the primary gear train (2) is rotatably connected to the inner casing (111) by means of bearings (4).

6. The gearbox according to claim 4, further comprising a first sealing ring (5) and a second sealing ring (6), wherein the first sealing ring (5) is arranged between the inner box (111) and the outer box (112), and the second sealing ring (6) is arranged between the second box (12) and the inner gear ring (31).

7. The gearbox according to any of the preceding claims 1 to 6, characterised in that the first chamber (1A) and the second chamber (1B) are further provided with a first drain (1122) and a second drain (122), respectively.

8. A shield tunneling machine comprising the gearbox according to any one of claims 1 to 7.

9. The shield tunneling machine according to claim 8, characterized in that it further comprises two cooling water circulation devices, with which said first cavity (1A) and said second cavity (1B) are respectively in communication.

10. The shield tunneling machine according to claim 8, further comprising a cooling water circulation device, wherein one of the two first water passage ports (1121) and one of the two second water passage ports (121) communicate through a pipe, and the pipe communicates with a water outlet of the cooling water circulation device.

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