CN218761317U

CN218761317U - Heat dissipation mechanism of gear box

Info

Publication number: CN218761317U
Application number: CN202223313995.6U
Authority: CN
Inventors: 徐栋; 王德申; 蔡志明; 李荃
Original assignee: Nanjing High Speed and Accurate Gear Group Co Ltd
Current assignee: Nanjing High Speed and Accurate Gear Group Co Ltd
Priority date: 2022-12-09
Filing date: 2022-12-09
Publication date: 2023-03-28
Anticipated expiration: 2032-12-09

Abstract

The application provides a gear box heat dissipation mechanism, which relates to the technical field of gear box design, and comprises a middle box body, a motor flange, a cooling water jacket and a transparent cover; the middle box body is connected with a motor flange, the cooling water jacket is sleeved outside the middle box body, and the cooling water jacket and the middle box body jointly define a first water cavity; the transparent cover is connected with the motor flange, and the transparent cover and the motor flange jointly define a second water cavity; the transparent cover is provided with a through hole for the rotating shaft to penetrate through, and the end cap of the transparent cover is provided with a water drainage part communicated with the through hole. The heat dissipation mechanism is good in heat dissipation effect and high in heat dissipation efficiency, the cooling liquid is not easy to enter an internal operation area of the gear box when leaking, the gear box is stable and reliable in operation, and the safety is high.

Description

Heat dissipation mechanism of gear box

Technical Field

The utility model relates to a gear box design technical field particularly, relates to a gear box heat dissipation mechanism.

Background

The traditional heat dissipation of the gear box is natural heat dissipation, air-cooled heat dissipation, water-cooled oil cooling and the like, natural cooling can be adopted when the ambient temperature is low, and when the ambient temperature is high, the heat in the gear box can not be effectively taken away through natural heat dissipation. For example, the main driving gear box of the high-power shield machine has the problems of high speed ratio and use space, low transmission ratio, continuous working condition and poor heat dissipation capacity, and cannot adopt natural cooling. And the function of air cooling heat dissipation can not satisfy the requirement, and the gear box operating temperature is higher, and operational reliability is poor. Therefore, under some gearbox operating conditions, water cooling is selected.

The inventor researches and discovers that the existing water-cooling heat dissipation structure of the gearbox has the following defects:

in the circulating flowing process of the cooling liquid, when the sealing fails, the cooling liquid easily enters the interior of the gear box, the normal operation of internal components of the gear box is influenced, the gear box is even scrapped, and the potential safety hazard is large.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a gear box heat dissipation mechanism, it can improve the coolant liquid and leak the inside condition of back entering gear box, and the gear box operation is reliable and stable.

The embodiment of the utility model is realized like this:

in a first aspect, the utility model provides a gear box heat dissipation mechanism, include:

the middle box body, the motor flange, the cooling water jacket and the transparent cover; the middle box body is connected with the motor flange, the cooling water jacket is sleeved outside the middle box body, and the cooling water jacket and the middle box body jointly define a first water cavity; the transparent cover is connected with the motor flange, and the transparent cover and the motor flange jointly define a second water cavity; the transparent cover is provided with a through hole for the rotating shaft to penetrate through, and the end cap of the transparent cover is provided with a water drainage part communicated with the through hole.

In an alternative embodiment, the drain is provided as a drain channel.

In an alternative embodiment, the number of the drain parts is plural, and the plural drain parts are arranged at intervals in the circumferential direction of the through hole.

In an alternative embodiment, the transparent cover is provided with a sealing surface attached to the motor flange, a water guide groove for positioning a sealing ring is arranged on the sealing surface, the water guide groove is arranged around the through hole, and the drainage part is positioned on one side of the water guide groove close to the through hole.

In an optional implementation mode, the motor flange is provided with a mounting hole for mounting a bearing, the hole wall of the mounting hole is provided with an oil through groove, and the oil through groove is used for guiding lubricating oil in the middle box body to the transparent cover.

In an alternative embodiment, one end of the oil through groove extends to the end face of the motor flange close to the middle box body.

In an alternative embodiment, the oil through grooves are multiple in number and are arranged at intervals in the circumferential direction of the mounting hole.

In an alternative embodiment, the outer circumferential surface of the middle case is provided with an annular recessed portion, and the cooling water jacket closes an opening of the annular recessed portion to form the first water chamber.

In an alternative embodiment, a first sealing body and a second sealing body are arranged between the middle box body and the cooling water jacket, and the annular recess portion is located between the first sealing body and the second sealing body.

In an alternative embodiment, the first water chamber and the second water chamber are connected in series by a pipe.

The embodiment of the utility model provides a beneficial effect is:

to sum up, the gear box heat dissipation mechanism that this embodiment provided uses through first water cavity and the cooperation of second water cavity, increases the heat-sinking capability, and the radiating efficiency is high, and the radiating effect is good. And, first water cavity shaping is outside the well box of gear box, and sealed inefficacy appears in first water cavity, and when leading to the coolant liquid to leak, the coolant liquid directly discharges outside the box of gear box, and can directly not get into inside the gear box, can not influence the normal operating of the inside spare part of gear box. Meanwhile, the through cover forming the second water cavity is provided with the water discharging part, when the sealing failure occurs at the connecting position of the through cover and the motor flange, leaked cooling liquid can flow to the through hole along the water discharging part and then is discharged from the through hole, accumulated water is not easy to generate at the contact surface of the through cover and the motor flange, the condition that the accumulated water easily penetrates through an oil seal between the through cover and the motor flange and enters the interior of the gear box is improved, and the water cooling safety is improved. Therefore, the gear box heat dissipation mechanism that this embodiment provided, the cold district liquid of leakage is difficult for getting into the inside operation region of gear box, and the security is high, and the operation of gear box is reliable and stable, long service life, and the running cost is low.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural view of a heat dissipation mechanism of a gear box according to an embodiment of the present invention;

fig. 2 is a schematic cross-sectional structural view of a heat dissipation mechanism of a gear box according to an embodiment of the present invention;

fig. 3 is a schematic structural view of the transparent cover according to the embodiment of the present invention.

Icon:

001-first water chamber; 002-a second water cavity; 100-a middle box body; 110 — a first seal; 120-a second seal body; 200-a motor flange; 210-an outer ring; 220-a bearing seat; 221-mounting holes; 222-oil through groove; 300-cooling water jacket; 400-transparent cover; 410-a drain; 420-a through hole; 500-a third seal; 600-oil sealing; 700-deep groove ball bearing.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

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, it need not be further defined or explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The inventor finds in practice that in the prior art, in order to meet the normal operation of a main driving gear box of a high-power shield machine, a double water-cooling system module is generally additionally arranged for heat dissipation. The double water cooling system module is provided with two water cooling cavities, the two water cooling cavities are identical to the cavity inside the gear box, and in order to avoid the coolant entering the cavity, the two water cooling cavities are separated from the cavity inside the gear box through a plurality of sealing pieces. In the actual operation process of the gear box, when the sealing element fails, the cooling liquid can leak from the position where the sealing element is located, so that the cooling liquid enters the gear box, the normal operation of the gear box is influenced, the gear box is even scrapped, the risk is high, and the operation cost is high.

In view of this, the designer provides a gear box heat dissipation mechanism, can improve the reliability under the prerequisite that the radiating effect is good guaranteeing, reduces the probability that the coolant liquid got into the gear box inside after leaking, improves gear box stability and reliability of operation.

Referring to fig. 1 to fig. 3, in the present embodiment, the heat dissipation mechanism of the gearbox includes a middle box 100, a motor flange 200, a cooling water jacket 300, and a transparent cover 400; the middle box body 100 is connected with the motor flange 200, the cooling water jacket 300 is sleeved outside the middle box body 100, and the cooling water jacket 300 and the middle box body 100 jointly define a first water cavity 001; the transparent cover 400 is connected with the motor flange 200, and the transparent cover 400 and the motor flange 200 jointly define a second water cavity 002; the transparent cover 400 has a through hole 420 through which the rotation shaft passes, and an end cap of the transparent cover 400 is provided with a drain portion 410 communicating with the through hole 420.

The working principle of the heat dissipation mechanism of the gearbox provided by the embodiment is as follows:

in the operation process of the gearbox, the first water cavity 001 and the second water cavity 002 can be used in series, namely, the first water cavity 001 and the second water cavity 002 can be communicated through a pipeline. The cooling liquid is introduced from the first water cavity 001, and the cold zone liquid can enter the pipeline from the first water cavity 001, then enter the second water cavity 002 from the pipeline, and then return to the water source from the second water cavity 002. Obviously, the cooling fluid is cooled before returning to the water source, so as to participate in the cooling cycle again. So, the coolant liquid can carry out the heat exchange with the gear box at first water cavity 001 and the in-process that second water cavity 002 circulation flowed, takes away the heat that produces in the gear box operation process, realizes the purpose of heat dissipation cooling. Through the cooperation use of first water chamber 001 and second water chamber 002, the radiating efficiency is high, and the radiating effect is good, and the gear box is difficult to move under high temperature environment, and the reliability is high.

Meanwhile, the first water cavity 001 is formed outside the middle box body 100 of the gear box, the first water cavity 001 is sealed and loses efficacy, and when cooling liquid leaks, the cooling liquid is directly discharged out of the box body of the gear box and cannot directly enter the gear box, and normal operation of parts inside the gear box cannot be influenced. Meanwhile, the through cover 400 forming the second water cavity 002 is provided with the water discharging part 410, when the sealing failure occurs at the connecting position of the through cover 400 and the motor flange 200, the leaked cooling liquid flows to the through hole 420 along the water discharging part 410 and then is discharged from the through hole 420, so that water accumulation is not easily generated at the contact surface of the through cover 400 and the motor flange 200, the condition that the water accumulation easily passes through the oil seal 600 between the through cover 400 and the motor flange 200 and enters the interior of the gear box is improved, and the water cooling safety is improved. Therefore, the gear box heat dissipation mechanism that this embodiment provided, inside the difficult entering gear box of cold district liquid that leaks, the security is high, and the operation of gear box is reliable and stable, long service life, and the running cost is low.

In this embodiment, optionally, an annular recess is provided on the middle box body 100, the annular recess may be an annular groove, and the annular groove is coaxial with the middle box body 100. The width of the annular groove in the axial direction of the middle case 100 gradually increases from the groove bottom to the direction of the notch, that is, the longitudinal sectional profile of the annular groove is substantially isosceles trapezoid, so that the volume of the first water chamber 001 can be increased, and more coolant can be contained. Furthermore, a first sealing body 110 and a second sealing body 120 are externally attached to the middle case 100, and the first sealing body 110 and the second sealing body 120 are located on both sides of the annular recess, that is, the annular recess is located between the first sealing body 110 and the second sealing body 120. When the cooling water jacket 300 is sleeved outside the middle box 100, the first sealing body 110 and the second sealing body 120 are both clamped outside the cooling water jacket and the middle box 100, thereby playing a role of sealing. It should be appreciated that the first and second sealing

bodies

110, 120 may each be an "O" ring seal, and the number of first and second sealing

bodies

110, 120 is not limited to one.

Meanwhile, a first water inlet, a first water outlet and a first water drain outlet may be provided on the cooling water jacket 300, and the heights of the first water inlet and the first water outlet are higher than that of the first water drain outlet. The first water inlet can be communicated with a water source through a water pipe. The first water outlet is communicated with the second water cavity 002 through a pipeline. First drainage port is in normally closed state, when first water cavity 001 needs to be washd, open first drainage port can.

In this embodiment, optionally, one end of the motor flange 200 is fixed to one end of the middle box 100 by bolts. The motor flange 200 includes an outer race 210 and a bearing housing 220 of a unitary structure. The bearing seat 220 encloses a mounting hole 221 for the rotating shaft to pass through, two deep groove ball bearings 700 are embedded in the mounting hole 221 and are arranged in the axial direction of the mounting hole 221 in an upward arrangement manner, and the bearing passes through the inner rings of the two deep groove ball bearings 700. Bearing frame 220 and outer lane 210 limit the open annular space of one end jointly, pass through lid 400 simultaneously with outer lane 210 and bearing frame 220 through bolt fixed connection to pass through lid 400 and seal annular space and mounting hole 221, the middle part of passing through lid 400 is equipped with the circular through-hole 420 that supplies the pivot to wear to establish. After the rotating shaft penetrates through the transparent cover 400, an oil seal 600 is arranged between the rotating shaft and the transparent cover 400, and the oil seal 600 can prevent oil in the mounting hole 221 from leaking from the matching position of the transparent cover 400 and the bearing seat 220. After the transparent cover 400 is assembled with the motor flange 200, the transparent cover 400 closes the annular space, thereby forming a second water chamber 002 at the annular space.

It should be understood that, in order to improve the sealing performance, sealing rings are provided between the transparent cover 400 and the bearing housing 220 and between the transparent cover 400 and the outer ring 210. For convenience of description, the sealing ring between the transparent cover 400 and the bearing housing 220 is a third sealing body 500.

Meanwhile, the transparent cover 400 is provided with a sealing surface matched with the bearing seat 220, a water guide groove is arranged on the sealing surface, the water guide groove is an annular groove and is arranged around the through hole 420, the through hole 420 is positioned in an area surrounded by the peripheral wall of the outer groove of the water guide groove, the water guide groove and the through hole 420 are coaxially arranged, and leaked cooling liquid is conveniently discharged due to the arrangement of the water guide groove. The drain portion 410 may be provided on the sealing surface, and the drain portion 410 may be provided as a drain groove. One end of the water drainage groove is communicated with the water diversion groove, and the other end of the water drainage groove is communicated with the through hole 420. So, when the coolant liquid leakage appears in second water cavity 002, the coolant liquid can be followed the water drainage tank and discharged, and can not long-pending in water diversion groove department, is difficult for passing in oil blanket 600 gets into bearing frame 220, and then is difficult for getting into in the gear box.

It should be understood that the number of the drain parts 410 may be plural, and the plural drain parts 410 are arranged at regular intervals in the circumferential direction of the through-hole 420. For example, in the present embodiment, the number of the drain portions 410 is two and is arranged in central symmetry.

Further, be provided with on the pore wall of mounting hole 221 and lead to oil groove 222, lead to on oil groove 222's one end extends to bearing frame 220 is close to the terminal surface of well box 100, so, the gear box operation in-process, the lubricated fluid in the gear box can be followed and led to oil groove 222 and get into mounting hole 221 to be close to the deep groove ball bearing 700 of penetrating lid 400 in two deep groove ball bearings 700 and realize better lubrication, also can take away partial heat through lubricated fluid, improve the radiating effect.

It should be noted that the number of the oil through grooves 222 may be one or more, and may be designed as needed.

Optionally, a second water inlet, a second water outlet and a second water outlet are arranged on the outer ring 210, the first water inlet is communicated with the second water inlet through a pipeline, and the cooling liquid can return to the water source from the second water outlet. The second drainage is normally closed, and when the second water cavity 002 needs to be cleaned, the second drainage port is opened.

It should be noted that, first water cavity 001 and second water cavity 002 can use in series, also can use independently, or the two alternative uses, select according to the circumstances can, it is nimble convenient to use.

The gear box heat dissipation mechanism that this embodiment provided, not only the radiating effect is good to inside difficult entering gear box when the coolant liquid leaks, the gear box operation is reliable and stable.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A gearbox heat dissipation mechanism, comprising:

2. The gearbox heat dissipation mechanism of claim 1, wherein:

the drainage part is provided with a drainage groove.

3. The gearbox heat dissipation mechanism of claim 1, wherein:

the quantity of drainage portion is a plurality of, and is a plurality of drainage portion is in the interval arranges in the circumference of through-hole.

4. The gearbox heat dissipation mechanism of claim 1, wherein:

the through cover is provided with a sealing surface attached to the motor flange, a water diversion groove used for positioning the sealing ring is arranged on the sealing surface, the water diversion groove surrounds the through hole, and the water drainage part is positioned on one side, close to the through hole, of the water diversion groove.

5. The gearbox heat dissipation mechanism of claim 1, wherein:

the motor flange is provided with a mounting hole for mounting a bearing, the hole wall of the mounting hole is provided with an oil through groove, and the oil through groove is used for guiding lubricating oil in the middle box body to the transparent cover.

6. The gearbox heat dissipation mechanism of claim 5, wherein:

one end of the oil through groove extends to the end face, close to the middle box body, of the motor flange.

7. The gearbox heat dissipation mechanism of claim 5, wherein:

the number of the oil through grooves is a plurality of and the oil through grooves are arranged at intervals in the circumferential direction of the mounting hole.

8. The gearbox heat dissipation mechanism of claim 1, wherein:

the outer peripheral surface of the middle box body is provided with an annular depressed part, and the cooling water jacket closes the opening of the annular depressed part to form the first water cavity.

9. The gearbox heat dissipation mechanism of claim 8, wherein:

a first sealing body and a second sealing body are arranged between the middle box body and the cooling water jacket, and the annular sunken part is positioned between the first sealing body and the second sealing body.

10. The gearbox heat dissipation mechanism of claim 1, wherein:

the first water cavity and the second water cavity are connected in series through a pipeline.