Oil leakage prevention structure and mechanical arm

Abstract

The utility model relates to an oil leakage prevention structure and a mechanical arm, the oil leakage prevention structure comprises a shell, a sealing cavity is formed in the shell, the sealing cavity is used for storing a first target piece, an oil storage groove is formed in the outer surface of the shell, and the oil storage groove communicates with the sealing cavity; and the sealing cover is mounted on the shell and seals the oil storage tank. According to the oil leakage prevention structure, when the first target piece leaks oil, liquid leaked by the first target piece flows into the sealing cavity, and then the liquid in the sealing cavity flows into the oil storage tank, so that the situation that the liquid leaked by the first target piece is accumulated in the sealing cavity, influences work of the first target piece or leaks out of the mechanical arm from other parts of the shell is avoided; and the liquid entering the oil storage tank is sealed in the oil storage tank through the sealing cover, and the leaked liquid can be subsequently and intensively recycled by disassembling the sealing cover, so that the liquid is prevented from polluting equipment and the environment.

Description

Technical Field

[0001] The present application relates to the technical field of robots, and particularly to an anti-oil leakage structure and a robotic arm. Background Art

[0002] A robot is an intelligent machine that can work semi-autonomously or fully autonomously. Robots can perform tasks such as operations or movements through programming and automatic control. There are many types of existing robots, including but not limited to industrial robots, service robots, entertainment robots, etc.

[0003] A robot joint is one of the cores of the entire robot. Existing robot joint devices generally include a driving motor, a reduction gear module, and a robotic arm. The reduction gear module decelerates the rotation of the driving motor and then drives the robotic arm to move.

[0004] However, after long-term use of the reduction gear module, due to the aging of the seals inside the reduction gear module, gear oil leakage may occur. The leaked gear oil will pollute the working environment of the robot. For industrial robots, the leaked gear oil will contaminate the products being produced, resulting in a decrease in the product qualification rate. Summary of the Invention

[0005] Based on this, it is necessary to provide an anti-oil leakage structure and a robotic arm for the problem that gear oil leakage may occur after long-term use of the reduction gear module of a robot joint.

[0006] An anti-oil leakage structure includes:

[0007] A housing having a sealed cavity formed therein. The sealed cavity is used to store a first target member. An oil storage groove is formed on the outer surface of the housing, and the oil storage groove is communicated with the sealed cavity;

[0008] A sealing cover is installed on the housing and closes the oil storage groove.

[0009] In one embodiment, an oil inlet is formed on the inner wall of the oil storage groove. When the anti-oil leakage structure is in use, the oil inlet communicates with the bottom of the sealed cavity, and the oil inlet is located at the top of the oil storage groove.

[0010] In one embodiment, the anti-oil leakage structure further includes a first sealing member. The first sealing member is sealingly disposed between the sealing cover and the housing and is disposed around the circumference of the oil storage groove.

[0011] In one embodiment, a first sealing groove is formed on the housing. The first sealing groove is disposed around the oil storage groove, and the first sealing member is disposed in the first sealing groove.

[0012] In one embodiment, an installation cavity is further provided inside the housing. The installation cavity is used to store a second target component. An installation opening is formed on the outer surface of the housing, and the installation opening is communicated with the installation cavity. When the sealing cover is installed on the housing, the sealing cover closes the installation opening.

[0013] In one embodiment, the oil leakage prevention structure further includes a second sealing member. The second sealing member is sealingly disposed between the sealing cover and the housing and is arranged around the circumference of the installation opening.

[0014] In one embodiment, a second sealing groove is formed on the housing. The second sealing groove is arranged around the installation opening, and the second sealing member is disposed in the second sealing groove.

[0015] In one embodiment, a plurality of installation holes are further formed on the housing. All the installation holes are arranged around the circumferences of the installation opening and the oil storage tank.

[0016] The oil leakage prevention structure further includes a plurality of fastening members. A plurality of fixing holes are formed on the sealing cover. All the fixing holes correspond to all the installation holes. Each fastening member passes through one of the installation holes and the corresponding fixing hole and fixes the sealing cover to the housing.

[0017] A robotic arm includes a first target component and the oil leakage prevention structure according to any one of the above.

[0018] In one embodiment, the robotic arm further includes a second target component, and the second target component is disposed inside the oil leakage prevention structure.

[0019] In the above oil leakage prevention structure, when the first target component leaks oil, the liquid leaked from the first target component flows into the sealing cavity, and then the liquid in the sealing cavity will flow into the oil storage tank, avoiding the accumulation of the liquid leaked from the first target component in the sealing cavity, which affects the operation of the first target component or leaks out of the robotic arm from other parts of the housing. The liquid that enters the oil storage tank is sealed inside the oil storage tank by the sealing cover. Subsequently, the leaked liquid can be centrally recovered by disassembling the sealing cover, avoiding liquid pollution to the equipment and the environment. Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of a robotic arm in some embodiments of the present application.

[0021] Figure 2 is Figure 1 A schematic structural diagram of the robotic arm in the embodiment from another perspective.

[0022] Description of the Reference Numerals:

[0023] Housing 10; Sealing cavity 11; First target part 12; Oil storage tank 13; Sealing cover 14; Oil inlet 15; First seal 16; First seal groove 17; Installation cavity 18; Installation port 19; Second seal 20; Second seal groove 21; Installation hole 22; Detailed implementation mode

[0024] To make the above objects, features, and advantages of the present application more obvious and understandable, the following will describe the detailed implementation mode of the present application with reference to the accompanying drawings. Many specific details are set forth in the following description to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0025] In the description of the present application, it should be understood that if terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the accompanying drawings. These are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present application.

[0026] In addition, if terms such as "first" and "second" appear, these terms are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, if the term "plural" appears, the meaning of "plural" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0027] In the present application, unless otherwise clearly specified and limited, if terms such as "installation", "connection", "connection", "fixation", etc. appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0028] In this application, unless otherwise clearly specified and defined, when a first feature is described as being "on" or "under" a second feature or the like, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature has a lower horizontal height than the second feature.

[0029] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If so, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in this application are only for the purpose of illustration and do not represent the only implementation.

[0030] Refer to Figure 1 and Figure 2 , a robotic arm provided by an embodiment of the present application includes an anti-oil-leakage structure and a first target component 12 disposed inside the anti-oil-leakage structure. The first target component 12 can be components such as a reduction gear module, a control valve module, and a hydraulic module that have liquids such as gear oil and hydraulic oil flowing inside. Among them, during the normal use of the robotic arm, the first target component 12 is sealed by seals such as oil seals to prevent leakage of liquids such as gear oil or hydraulic oil. However, after long-term use, components such as oil seals will age, resulting in liquid leakage to the outside of the robotic arm.

[0031] To this end, the anti-oil-leakage structure includes a housing 10 and a sealing cover 14. A sealing cavity 11 is formed inside the housing 10. The sealing cavity 11 is used to store the first target component 12. An oil storage groove 13 is formed on the outer surface of the housing 10. The oil storage groove 13 is communicated with the sealing cavity 11. The sealing cover 14 is installed on the housing 10 and closes the oil storage groove 13.

[0032] In this way, when the first target component 12 leaks oil, the liquid leaked from the first target component 12 flows into the sealing cavity 11, and then the liquid in the sealing cavity 11 flows into the oil storage groove 13, preventing the liquid leaked from the first target component 12 from accumulating in the sealing cavity 11, affecting the operation of the first target component 12 or leaking out of the robotic arm from other parts of the housing 10. The liquid that enters the oil storage groove 13 is sealed inside the oil storage groove 13 by the sealing cover 14, and the leaked liquid can be centrally recovered and processed by removing the sealing cover 14 later, avoiding liquid pollution to the equipment and the environment.

[0033] Optionally, the first target member 12 is a speed reducer module, which is used to reduce the power input from the outside and transmit the reduced power to the execution component or the driving component of the robotic arm itself, so as to drive the execution component or the robotic arm itself to perform different actions. The first seal 16 is a sealing material, such as an O-ring, etc. The first seal 16 can also be a combined part with a harder material inside and a softer rubber material covering the outside, and the harder material is used to facilitate the assembly of the first seal 16.

[0034] In some embodiments of the present application, in order to enable the liquid in the sealing cavity 11 to directly flow into the oil storage tank 13, an oil inlet 15 is opened on the inner wall of the oil storage tank 13. When the anti-oil leakage structure is in use, the oil inlet 15 communicates with the bottom of the sealing cavity 11, and the oil inlet 15 is located at the top of the oil storage tank 13. In this way, once the liquid in the first target member 12 leaks, after the liquid enters the sealing cavity 11, it will enter the oil storage tank 13 through the oil inlet 15 at the bottom of the sealing cavity 11 and finally be stored in the oil storage tank 13, without polluting the environment or the equipment.

[0035] In some embodiments of the present application, the anti-oil leakage structure further includes a first seal 16, which is hermetically arranged between the sealing cover 14 and the housing 10 and is arranged around the circumference of the oil storage tank 13. When the sealing cover 14 is installed on the housing 10, the first seal 16 can seal the gap between the housing 10 and the sealing cover 14, preventing the liquid in the oil storage tank 13 from flowing out through the gap between the sealing cover 14 and the housing 10 and polluting the environment or the equipment.

[0036] In some embodiments, a first sealing groove 17 is also opened on the housing 10, and the first sealing groove 17 is arranged around the oil storage tank 13. The first seal 16 is arranged in the first sealing groove 17. Installing the first seal 16 in the first sealing groove 17 can not only facilitate the installation of the first seal 16, but also fix the first seal 16 through the first sealing groove 17, thus preventing the first seal 16 from moving due to vibration during the operation of the robotic arm, which affects the sealing of the gap between the housing 10 and the sealing cover 14, and further reducing the probability of oil leakage of the robotic arm.

[0037] In some embodiments, an installation cavity 18 is further provided inside the housing 10. The robotic arm further includes a second target member (not shown in the figure). The installation cavity 18 is used to store the second target member, so as to install the second target member inside the housing. The second target member and the first target member 12 are different components inside the robotic arm. An installation opening 19 is formed on the outer surface of the housing 10, and the installation opening 19 communicates with the installation cavity 18. When the sealing cover 14 is installed on the housing 10, the sealing cover 14 closes the installation opening 19, so as to install the second target member in the anti-oil-leakage structure, and protect the second target member through the housing of the anti-oil-leakage structure. At the same time, when the second target member leaks oil, the liquid leaked from the second target member will also be in the installation cavity and will not flow into the external environment or equipment to cause pollution.

[0038] During the actual use process, the second target member can enter the installation cavity 18 through the installation opening 19 and is finally installed inside the housing 10. Then, when the installation opening 19 is sealed by the sealing cover 14, the sealing cover 14 will also seal the oil storage tank 13 together. In this way, there is no need to separately seal the oil storage tank 13 and the installation opening 19, and the sealing cover 14 can seal the oil storage tank 13 and the installation opening 19 at the same time.

[0039] Optionally, the first target member 12 is a speed reducer module, and the second target member is a control valve. In some other embodiments, the first target member 12 can also be a control valve, and the second target member is a speed reducer module, as long as the first target member 12 and the second target member are different components.

[0040] In some embodiments, the anti-oil-leakage structure further includes a second sealing member 20. The second sealing member 20 is sealingly arranged between the sealing cover 14 and the housing 10 and is arranged around the circumference of the installation opening 19. When the sealing cover 14 is installed on the housing 10, the second sealing member 20 can seal the gap between the housing 10 and the sealing cover 14. Even if the second target member leaks oil, the second sealing member 20 can prevent the liquid in the installation cavity 18 from flowing out through the gap between the sealing cover 14 and the housing 10 and polluting the environment or equipment.

[0041] Specifically in some embodiments, a second sealing groove 21 is further formed on the housing 10. The second sealing groove 21 is arranged around the installation opening 19, and the second sealing member 20 is arranged in the second sealing groove 21. Installing the second sealing member 20 in the second sealing groove 21 can not only facilitate the installation of the second sealing member 20, but also fix the second sealing member 20 through the second sealing groove 21, so as to prevent the second sealing member 20 from moving due to vibration during the operation of the robotic arm, thereby affecting the sealing of the gap between the housing 10 and the sealing cover 14 by the second sealing member 20, and further reducing the probability of oil leakage of the robotic arm.

[0042] In some embodiments, in order to fix the sealing cover 14, a plurality of mounting holes 22 are further formed in the housing 10. All the mounting holes 22 are arranged circumferentially around the mounting opening 19 and the oil storage tank 13. The anti-oil leakage structure further includes a plurality of fasteners. A plurality of fixing holes are formed in the sealing cover 14. All the fixing holes correspond to all the mounting holes 22. Each fastener passes through one of the mounting holes 22 and the corresponding fixing hole, and fixes the sealing cover 14 to the housing 10.

[0043] The above anti-oil leakage structure has at least the following advantages:

[0044] When the first target member 12 leaks oil, the liquid leaked from the first target member 12 flows into the sealing cavity 11. The liquid in the sealing cavity 11 will then flow into the oil storage tank 13, preventing the liquid leaked from the first target member 12 from accumulating in the sealing cavity 11, which may affect the operation of the first target member 12 or leak out of the robotic arm from other parts of the housing 10. The liquid that enters the oil storage tank 13 is sealed inside the oil storage tank 13 by the sealing cover 14. Subsequently, the leaked liquid can be centrally recovered by disassembling the sealing cover 14, avoiding liquid contamination of the equipment and the environment.

[0045] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0046] The above embodiments only represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. An oil leakage prevention structure, characterized in that: The oil leakage prevention structure comprises: A housing (10) having a sealed cavity (11) formed therein, the sealed cavity (11) being used to store a first target component (12); an oil storage groove (13) being formed on an outer surface of the housing (10), the oil storage groove (13) being in communication with the sealed cavity (11); A sealing cover (14) is mounted on the housing (10) and seals the oil storage tank (13).

2. The oil leakage prevention structure according to claim 1, characterized in that: An oil inlet (15) is provided on the inner wall of the oil storage tank (13); when the oil leakage prevention structure is in use, the oil inlet (15) is connected to the bottom of the sealing cavity (11), and the oil inlet (15) is located at the top of the oil storage tank (13).

3. The oil leakage prevention structure according to claim 1, characterized in that: The oil leakage prevention structure further comprises a first sealing member (16), wherein the first sealing member (16) is sealingly disposed between the sealing cover (14) and the housing (10), and is disposed around the circumference of the oil storage tank (13).

4. The oil leakage prevention structure according to claim 3, characterized in that: The housing (10) is provided with a first sealing groove (17), the first sealing groove (17) being arranged around the oil storage groove (13), and the first sealing member (16) being arranged in the first sealing groove (17).

5. The oil leakage prevention structure according to claim 1, characterized in that: The shell (10) is further provided with an installation cavity (18) inside, the installation cavity (18) being used to store the second target part, and the outer surface of the shell (10) is provided with an installation opening (19), the installation opening (19) being connected to the installation cavity (18), and when the sealing cover (14) is installed on the shell (10), the sealing cover (14) closes the installation opening (19).

6. The oil leakage prevention structure according to claim 5, characterized in that: The oil leakage prevention structure further comprises a second sealing member (20), wherein the second sealing member (20) is sealingly disposed between the sealing cover (14) and the housing (10), and is disposed around the circumference of the installation opening (19).

7. The oil leakage prevention structure according to claim 6, characterized in that: The housing (10) is provided with a second sealing groove (21), the second sealing groove (21) is arranged around the mounting opening (19), and the second sealing member (20) is arranged in the second sealing groove (21).

8. The oil leakage prevention structure according to claim 5, characterized in that: The housing (10) is also provided with a plurality of mounting holes (22), and all of the mounting holes (22) are arranged circumferentially around the mounting opening (19) and the oil storage tank (13); The oil leakage prevention structure further comprises a plurality of fasteners. The sealing cover (14) is provided with a plurality of fixing holes, all of the fixing holes correspond to all of the mounting holes (22), and each of the fasteners is inserted through one of the mounting holes (22) and the corresponding fixing hole, and fixes the sealing cover (14) to the housing (10).

9. A robotic arm, characterized in that: It comprises a first target part (12) and the oil leakage prevention structure according to any one of claims 1 to 8.

10. The robot arm according to claim 9, characterized in that: The robotic arm further includes a second target component, which is disposed in the oil leakage prevention structure.

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