Vertical gearbox ventilation structure and vertical gearbox

Abstract

The vertical gear box ventilation structure comprises an upper box cover, a box shell, a first bearing end cover and a second bearing end cover. The upper box cover is provided with an exhaust hole and a liquid level height display groove which are communicated, and a first bearing seat and a second bearing seat are integrated on the inner side face of the upper box cover. An oil inlet hole is formed in the side portion of the box shell, and the box shell is connected with the upper box cover. The first bearing end cover and the second bearing end cover are both located on the outer side of the upper box cover and connected with the upper box cover, the first bearing end cover and the first bearing seat are matched to define a first cavity, and the second bearing end cover and the second bearing seat are matched to define a second cavity; the oil inlet hole, the first cavity, the second cavity and the liquid level height display groove are sequentially communicated on the inner side of the upper box cover. According to the structural design of the gearbox, the assembling difficulty can be reduced, the assembling efficiency is improved, the assembling cost is reduced, and the oil leakage probability is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to gear box field, specifically, stand gear box ventilation structure and stand gear box. BACKGROUND

[0002] The type of gear box is various, can be divided into vertical gear box and horizontal gear box according to the distribution form of output shaft, wherein the vertical gear box is filled with oil from the oil inlet hole when adding lubricating oil, when the liquid level reaches the position of bearing seat, the cavity defined by bearing seat and bearing end cover is a sealed cavity, the air in the cavity cannot be discharged, so that the liquid level cannot rise, which affects the amount of lubricating oil, and the lubricating oil cannot cover the bearing, so that the bearing cannot be fully lubricated. At present, in order to improve this situation, a ventilation pipe is generally installed on the bearing end cover corresponding to the bearing seat, the ventilation pipe is connected with the upper multiple sealed cavities, and then the ventilation pipe is connected with the expansion tank. When adding oil from the expansion tank, the air in the sealed cavity can be discharged into the expansion tank, so that the liquid level can rise to the designed liquid level, thereby achieving the purpose of effectively lubricating the bearing.

[0003] The inventor found at least the following disadvantages of the prior art vertical gear box in the research:

[0004] Because the ventilation pipe needs to be additionally arranged on the top of the vertical gear box, the ventilation pipe is difficult to arrange and the assembly efficiency is low under the condition that the installation space is limited. In addition, the installation step is increased, the whole machine installation efficiency is affected, the assembly cost is increased, and the oil leakage risk is increased. UTILITY MODEL CONTENTS

[0005] The purpose of the utility model includes, for example, providing a vertical gear box ventilation structure and a vertical gear box, which can reduce the assembly difficulty, improve the assembly efficiency, reduce the assembly cost and reduce the oil leakage probability.

[0006] The embodiment of the utility model can be realized as follows:

[0007] In a first aspect, the utility model provides a vertical gear box ventilation structure, which comprises an upper cover, a box shell, a first bearing end cover and a second bearing end cover, wherein:

[0008] The upper cover is provided with a communication exhaust hole and a liquid level display groove, and the inner side of the upper cover is integrated with a first bearing seat and a second bearing seat; The side of the box shell is provided with an oil inlet hole, and the box shell is connected with the upper cover; The first bearing end cover and the second bearing end cover are located on the outer side of the upper cover and connected with the upper cover, the first bearing end cover is matched with the first bearing seat to define a first chamber, and the second bearing end cover is matched with the second bearing seat to define a second chamber;

[0009] The oil inlet hole, the first chamber, the second chamber and the liquid level display groove are sequentially communicated on the inner side of the upper box cover.

[0010] In an optional embodiment, a first vertical communication hole is arranged on the upper box cover, a first horizontal communication hole is arranged on the first bearing seat, the first vertical communication hole communicates the first horizontal communication hole and the first chamber, and the first horizontal communication hole communicates the oil inlet hole.

[0011] In an optional embodiment, a second vertical communication hole and a third vertical communication hole are arranged on the upper box cover, a collection groove is arranged at the connection of the first bearing seat and the second bearing seat, one end of the second vertical communication hole communicates the first chamber, the other end of the second vertical communication hole communicates the collection groove, the collection groove communicates one end of the third vertical communication hole, and the other end of the third vertical communication hole communicates the second chamber.

[0012] In an optional embodiment, a fourth vertical communication hole is arranged on the upper box cover, a second horizontal communication hole is arranged on the second bearing seat, one end of the fourth vertical communication hole communicates the second chamber, the other end of the fourth vertical communication hole communicates the second horizontal communication hole, and the second horizontal communication hole communicates the liquid level display groove.

[0013] In an optional embodiment, the vertical gear box ventilation structure further comprises a plugging head, the plugging head is detachably connected with the upper box cover, and the plugging head is used for opening or closing the exhaust hole.

[0014] In an optional embodiment, the vertical gear box ventilation structure further comprises a pressure breather cap, the pressure breather cap is installed on the upper box cover and communicates with the liquid level display groove.

[0015] In an optional embodiment, an oil discharge groove is arranged at the bottom of the box shell, and an oil discharge hole is arranged at the side of the box shell, the oil discharge hole communicates the oil discharge groove.

[0016] In a second aspect, the utility model provides a vertical gear box, the vertical gear box comprises:

[0017] The vertical gear box ventilation structure of any one of the foregoing embodiments.

[0018] In an optional embodiment, the vertical gear box further comprises an expansion oil tank and an oil inlet pipe, one end of the oil inlet pipe communicates the expansion oil tank, and the other end of the oil inlet pipe communicates the oil inlet hole.

[0019] In an optional embodiment, the oil inlet pipe is fixedly connected with the side of the box shell through buckling.

[0020] The beneficial effects of this utility model embodiment include, for example:

[0021] In summary, the vertical gearbox venting structure provided in this embodiment connects the oil inlet, first chamber, second chamber, liquid level indicator, and vent inside the gearbox, eliminating the need for an external vent pipe. This reduces the number of components and lowers manufacturing costs. Furthermore, the elimination of the external vent pipe after gearbox assembly reduces the required top mounting space, saves assembly steps, improves assembly efficiency, and lowers assembly costs. Simultaneously, the removal of the vent pipe reduces the number of mounting holes for vent pipes on the gearbox, decreasing potential leakage points and lowering the probability of oil leakage, resulting in stable and reliable gearbox operation. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of a vertical gearbox according to an embodiment of this application;

[0024] Figure 2 This is a top view of a vertical gearbox according to an embodiment of this application;

[0025] Figure 3 This is a partial structural schematic diagram of a vertical gearbox according to an embodiment of this application.

[0026] icon:

[0027] 001-Oil storage chamber; 100-Upper tank cover; 101-First vertical vent; 102-Second vertical vent; 103-Third vertical vent; 104-Fourth vertical vent; 105-Oil inlet groove; 106-Liquid level display groove; 110-First bearing seat; 111-First horizontal vent; 120-Second bearing seat; 121-Second horizontal vent; 130-Collection groove; 200-Tank shell; 201-Oil inlet; 202-Oil outlet; 210-Snap fastener; 300-Lower tank cover; 301-Oil outlet groove; 400-First bearing end cap; 401-First chamber; 500-Second bearing end cap; 501-Second chamber; 600-Sealing head; 700-Pressure vent cap; 800-Expansion oil tank; 900-Oil inlet pipe. Detailed Implementation

[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model below. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the utility model.

[0030] It should be noted that: similar signs and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0031] In the description of the utility model, it should be explained that if the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product is usually placed, it is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model.

[0032] In addition, if the terms "first", "second" and the like appear, they are only used for differentiation, and cannot be understood as indicating or implying relative importance.

[0033] It should be noted that the features in the embodiments of the utility model can be combined with each other without conflict.

[0034] In the prior art, in order to fill the sealing cavity at the top of the gear box with lubricating oil, so as to meet the oil height requirement, a plurality of air pipes are added at the top of the gear box, each air pipe is in communication with the corresponding sealing cavity, and the plurality of air pipes are in communication with the expansion oil tank 800. When filling oil, the gas in the sealing cavity can be discharged from the air pipe into the expansion oil tank 800, thereby meeting the oil filling height of the lubricating oil. However, since this scheme needs to increase the air pipe at the top, the number of parts is increased, the manufacturing cost is increased, and the air pipe needs to be installed after the gear box is assembled, which is high in top space requirement, complicated in assembly steps and high in assembly cost. There is a leakage risk at the connection between each air pipe and the gear box.

[0035] In view of this, the designer provides a vertical gear box ventilation structure, which communicates multiple sealed cavities from the inside, eliminates the external ventilation pipe, is convenient to assemble, reduces the oil leakage probability, and reduces the machining and manufacturing cost of the gear box.

[0036] Please refer to Figure 1 The embodiment provides a vertical gear box ventilation structure, which comprises an upper box cover 100, a box shell 200, a first bearing end cover 400 and a second bearing end cover 500. The upper box cover 100 is provided with a communicated exhaust hole and a liquid level display groove, and the inner side of the upper box cover 100 is integrated with a first bearing seat 110 and a second bearing seat 120. The side of the box shell 200 is provided with an oil inlet hole 201, and the box shell 200 is connected with the upper box cover 100; the first bearing end cover 400 and the second bearing end cover 500 are located on the outer side of the upper box cover 100 and are connected with the upper box cover 100, the first bearing end cover 400 cooperates with the first bearing seat 110 to define a first cavity 401, and the second bearing end cover 500 cooperates with the second bearing seat 120 to define a second cavity 501; the oil inlet hole 201, the first cavity 401, the second cavity 501 and the liquid level display groove are sequentially communicated on the inner side of the upper box cover 100.

[0037] As described above, the working principle of the vertical gear box ventilation structure provided by the embodiment is as follows:

[0038] When oil is added, the exhaust hole is opened. The expansion oil tank 800 is used to add oil to the inside of the gear box from the oil inlet hole 201, and as the amount of oil increases, the height of the oil gradually increases. When the oil level reaches the first cavity 401 and the second cavity 501, as the oil continues to increase, the air in the first cavity 401 and the second cavity 501 gradually enters the position where the liquid level display groove is located, and then is discharged from the exhaust hole. In this way, the oil can smoothly enter the first cavity 401 and the second cavity 501, thereby meeting the liquid level requirement. After the oil addition is completed, the exhaust hole can be closed, and the oil is not easy to leak from the exhaust hole.

[0039] Since the oil inlet hole 201, the first cavity 401, the second cavity 501, the liquid level display groove and the exhaust hole are sequentially communicated in the inside of the gear box, it is not necessary to additionally arrange an external ventilation pipe, the number of parts is reduced, and the machining and manufacturing cost is reduced. It is not necessary to assemble the external ventilation pipe after the assembly of the gear box is completed, the requirement for the top installation space is small, the assembly process is saved, the assembly efficiency is improved, and the assembly cost is reduced. At the same time, since the ventilation pipe is eliminated, the mounting hole for mounting the ventilation pipe on the gear box is reduced, thereby reducing the leakage point position and the oil leakage probability, and the gear box is stable and reliable in operation.

[0040] The following embodiment describes the details of the vertical gear box ventilation structure of the present application in an exemplary manner.

[0041] Please refer to Figure 1In the embodiment, the ventilation structure of the vertical gearbox includes an upper cover 100, a box shell 200, a lower cover 300, a first bearing end cover 400, a second bearing end cover 500, a plugging head 600, and a pressure breather cap 700. The upper cover 100 and the lower cover 300 are oppositely arranged and fixed to the upper side and the lower side of the box shell 200, and cooperate to define an oil storage cavity 001. The first bearing end cover 400 and the second bearing end cover 500 are both installed on the upper cover 100 by fasteners such as bolts, and a first chamber 401 is formed between the first bearing end cover 400 and the upper cover 100, and a second chamber 501 is formed between the second bearing end cover 500 and the upper cover 100. The plugging head 600 and the pressure breather cap 700 are both installed on the upper cover 100 and communicate with the oil storage cavity 001.

[0042] For reference Figure 3 In the embodiment, the inner side of the upper cover 100 is integrated with a first bearing seat 110 and a second bearing seat 120, and the first bearing seat 110 and the second bearing seat 120 are partially in contact and connected as a whole. The first bearing seat 110 has a first assembly hole for installing a bearing, and the second bearing seat 120 has a second assembly hole for installing a bearing. The upper cover 100 is provided with a first vertical ventilation hole 101, a second vertical ventilation hole 102, a third vertical ventilation hole 103, a fourth vertical ventilation hole 104, and an exhaust hole. The first vertical ventilation hole 101, the second vertical ventilation hole 102, the third vertical ventilation hole 103, and the fourth vertical ventilation hole 104 have the same extension direction and are arranged in sequence and at intervals. Meanwhile, the inner side of the upper cover 100 is formed with an oil inlet groove 105 and a liquid level display groove 106, the oil inlet groove 105 is located at the left side of the first bearing seat 110, the liquid level display groove 106 is located at the right side of the second bearing seat 120, and the height of the oil inlet groove 105 is basically the same as the height of the liquid level display groove 106. The first bearing seat 110 is provided with a first horizontal ventilation hole 111, the second bearing seat 120 is provided with a second horizontal ventilation hole 121, and the connecting position of the first bearing seat 110 and the second bearing seat 120 is provided with a collection groove 130.

[0043] The one end of the first horizontal ventilation hole 111 communicates with the oil inlet groove 105, and the other end communicates with the first vertical ventilation hole 101. The second vertical ventilation hole 102 and the third vertical ventilation hole 103 both communicate with the collection groove 130. The fourth vertical ventilation hole 104 communicates with one end of the second horizontal ventilation hole 121, the other end of the second horizontal ventilation hole 121 communicates with the liquid level display groove 106, and the exhaust hole communicates with the liquid level display groove 106.

[0044] It should be understood that the plugging head 600 is installed on the upper cover 100, and the plugging head 600 can open or close the exhaust hole. The plugging head 600 can be, but is not limited to, a plug or the like.

[0045] For reference Figure 1In the embodiment, the side of the box shell 200 is provided with an oil inlet hole 201, which is communicated with the oil inlet groove 105. The lubricating oil input from the oil inlet hole 201 can enter the first horizontal vent hole 111 from the oil inlet groove 105, and then flow to the first vertical vent hole 101. Meanwhile, the bottom of the box shell 200 is provided with an oil outlet hole 202, and the inner side of the lower box cover 300 is provided with an oil outlet groove 301. The oil outlet hole 202 is communicated with the oil outlet groove 301. An oil outlet valve can be installed at the oil outlet hole 202. In this way, after the oil outlet hole 202 is opened, it is convenient to replace the lubricating oil. It should be understood that the box shell 200 and the lower box cover 300 can be provided as an integrated structure.

[0046] In addition, the side of the box shell 200 can also be provided with a buckle 210, which can be positioned and arranged on the side of the box shell 200.

[0047] Please refer to Figure 3 In the embodiment, the first bearing end cover 400 is provided with an annular groove. The first bearing end cover 400 is fixed to the outer side of the upper box cover 100 by bolts. The slot of the annular groove is communicated with the assembly hole. Part of the slot of the annular groove is shielded by the upper box cover 100, and an annular first chamber 401 is formed at the annular groove. The port of the first vertical vent hole 101 away from the first horizontal vent hole 111 is communicated with the first chamber 401. Meanwhile, the port of the second vertical vent hole 102 away from the collection groove 130 is communicated with the first chamber 401.

[0048] In the embodiment, the second bearing end cover 500 is fixed to the outer side of the upper box cover 100 by bolts, and the two cooperate to define a second chamber 501. The port of the third vertical vent hole 103 away from the collection groove 130 is communicated with the second chamber 501, and the port of the fourth vertical vent hole 104 away from the second horizontal vent hole 121 is communicated with the second chamber 501.

[0049] In this way, when the lubricating oil is input into the oil storage cavity 001 through the oil inlet hole 201, the exhaust hole is opened. As the amount of lubricating oil increases, the liquid level in the oil storage cavity 001 gradually rises, and the air is concentrated in the first chamber 401 and the second chamber 501. Continue to add lubricating oil. The lubricating oil enters the first horizontal vent hole 111 from the oil inlet groove 105, and then flows to the first vertical vent hole 101, the first chamber 401, the second vertical vent hole 102, the collection groove 130, the third vertical vent hole 103, the second chamber 501, the fourth vertical vent hole 104, the second horizontal vent hole 121 and the liquid level display groove 106. In this process, the air can be discharged from the exhaust hole, thereby avoiding the situation that the oil cannot enter the first chamber 401 and the second chamber 501. The amount of oil can meet the set requirements, and it is beneficial to effectively lubricate the parts in the gear box.

[0050] In this embodiment, the pressure vent cap 700 is optionally installed on the upper box cover 100, and the pressure vent cap 700 enables partial pressure release and balances the internal and external pressures when the gear box is working.

[0051] The vertical gear box venting structure provided in this embodiment can discharge the air in the interior of the gear box from the exhaust hole when adding lubricating oil to the interior of the gear box, can ensure that the liquid level of the lubricating oil meets the set requirements, and can provide good lubrication for the components in the interior of the gear box. Moreover, the air discharge does not need to rely on the external vent pipe, but is directly guided from the interior to the exhaust hole for discharge, thereby saving the vent pipe, simplifying the structure, reducing the processing and manufacturing costs, and also reducing the assembly cost.

[0052] Please refer to Figure 1 and Figure 2 This embodiment also provides a vertical gear box, which comprises an expansion oil tank 800, an oil inlet pipe 900 and the vertical gear box venting structure. One end of the oil inlet pipe 900 is in communication with the expansion oil tank 800, and the other end of the oil inlet pipe 900 is in communication with the oil inlet hole 201. The oil inlet pipe 900 can be positioned by the buckle 210 structure outside the box shell 200. The lubricating oil is added to the interior of the gear box through the expansion oil tank 800, and the operation is convenient.

[0053] The above merely describes the specific embodiments of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A vertical gear box venting structure, characterized by, The vertical gear box ventilation structure comprises an upper box cover (100), a box shell (200), a first bearing end cover (400) and a second bearing end cover (500), wherein: The upper box cover (100) is provided with a communicating exhaust hole and a liquid level display groove, and the inner side of the upper box cover (100) is integrated with a first bearing seat (110) and a second bearing seat (120); the side of the box shell (200) is provided with an oil inlet hole (201), the box shell (200) is connected with the upper box cover (100); the first bearing end cover (400) and the second bearing end cover (500) are located on the outer side of the upper box cover (100) and connected with the upper box cover (100), the first bearing end cover (400) cooperates with the first bearing seat (110) to define a first chamber (401), and the second bearing end cover (500) cooperates with the second bearing seat (120) to define a second chamber (501); The oil inlet hole (201), the first chamber (401), the second chamber (501) and the liquid level display groove are sequentially communicated on the inner side of the upper box cover (100).

2. The vertical gear box ventilation structure according to claim 1, wherein: The upper box cover (100) is provided with a first vertical communication hole, the first bearing seat (110) is provided with a first horizontal communication hole, the first vertical communication hole communicates the first horizontal communication hole and the first chamber (401), and the first horizontal communication hole communicates the oil inlet hole (201).

3. The vertical gear box ventilation structure according to claim 2, wherein: The upper box cover (100) is provided with a second vertical communication hole and a third vertical communication hole, a collecting groove (130) is arranged at the connection of the first bearing seat (110) and the second bearing seat (120), one end of the second vertical communication hole communicates the first chamber (401), the other end of the second vertical communication hole communicates the collecting groove (130), the collecting groove (130) communicates one end of the third vertical communication hole, and the other end of the third vertical communication hole communicates the second chamber (501).

4. The vertical gear box ventilation structure according to claim 3, wherein: The upper box cover (100) is provided with a fourth vertical communication hole, the second bearing seat (120) is provided with a second horizontal communication hole, one end of the fourth vertical communication hole communicates the second chamber (501), the other end of the fourth vertical communication hole communicates the second horizontal communication hole, and the second horizontal communication hole communicates the liquid level display groove.

5. The vertical gear box ventilation structure according to any one of claims 1-4, wherein: The vertical gear box ventilation structure further comprises a plugging head (600), the plugging head (600) is detachably connected with the upper box cover (100), and the plugging head (600) is used for opening or closing the exhaust hole.

6. The vertical gear box ventilation structure according to any one of claims 1-4, wherein: The vertical gear box ventilation structure further comprises a pressure breather cap (700) installed on the upper box cover (100) and communicating with the liquid level display groove.

7. The vertical gear box ventilation structure according to any one of claims 1-4, characterized in that: The bottom of the box shell (200) is provided with an oil discharge groove (301), and the side of the box shell (200) is provided with an oil discharge hole (202) communicating with the oil discharge groove (301).

8. A vertical gear box characterized in that, The vertical gear box comprises: The vertical gear box ventilation structure according to any one of claims 1-7.

9. The vertical gear box according to claim 8, characterized in that: The vertical gear box further comprises an expansion oil tank (800) and an oil inlet pipe (900), one end of the oil inlet pipe (900) communicating with the expansion oil tank (800), and the other end of the oil inlet pipe (900) communicating with the oil inlet hole (201).

10. The vertical gear box according to claim 9, characterized in that: The oil inlet pipe (900) is fixedly connected with the side of the box shell (200) through a buckle (210).

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