Anti-oxidation structure and wave soldering device

Abstract

The utility model relates to the technical field of welding equipment, and provides an anti-oxidation structure and a wave soldering device. The anti-oxidation structure is suitable for being installed on the wave soldering device and comprises an anti-oxidation cover and a fixing piece, the fixing piece is detachably connected with the anti-oxidation cover, and an anti-oxidation cavity is formed in the anti-oxidation cover so that a transmission assembly of the wave soldering device can be located in the anti-oxidation cavity. According to the anti-oxidation structure and the wave soldering device provided by the utility model, the anti-oxidation cover and the fixing piece are detachably connected, so that after tin slag is generated in the anti-oxidation cover, the anti-oxidation cover and the fixing piece which are connected with each other can be detached, and the interior of the anti-oxidation cover can be conveniently cleaned.

Description

Technical Field

[0001] The utility model relates to the technical field of welding equipment, in particular to an anti-oxidation structure and a wave soldering device. Background Art

[0002] A wave soldering device is a device used to perform the wave soldering process. During the wave soldering process, solder (usually a tin alloy) is heated to a molten state for component soldering.

[0003] Wave soldering devices usually use an anti-oxidation cover to protect the molten tin during soldering from oxidation. Since the molten tin comes into contact with air during the use of the anti-oxidation cover, tin dross will be generated inside the anti-oxidation cover, and it is difficult for the anti-oxidation covers in the prior art to clean the generated tin dross. Summary of the Utility Model

[0004] The utility model provides an anti-oxidation structure to solve the defect that it is difficult for the anti-oxidation cover in the prior art to clean the generated tin dross, and realizes a detachable connection between the anti-oxidation cover and the fixing member, facilitating the cleaning inside the anti-oxidation cover.

[0005] On the one hand, the utility model provides an anti-oxidation structure suitable for being installed on a wave soldering device, including:

[0006] An anti-oxidation cover;

[0007] A fixing member, which is detachably connected to the anti-oxidation cover;

[0008] An anti-oxidation cavity is formed inside the anti-oxidation cover, so that the transmission component of the wave soldering device is located inside the anti-oxidation cavity.

[0009] According to the anti-oxidation structure provided by the utility model, the fixing member is threadedly connected to the anti-oxidation cover.

[0010] According to the anti-oxidation structure provided by the utility model, one end of the anti-oxidation cover is provided with a first threaded section, and one end of the fixing member is provided with a second threaded section, and the first threaded section is in threaded cooperation with the second threaded section.

[0011] According to the anti-oxidation structure provided by the utility model, a limiting portion is provided on the anti-oxidation cover, and the limiting portion is suitable for restricting the anti-oxidation cover from rotating along its own axis.

[0012] According to the anti-oxidation structure provided by the utility model, a fixing portion is provided on the fixing member, and the fixing portion is suitable for fixing the anti-oxidation structure to the wave soldering device.

[0013] According to the anti-oxidation structure provided by the utility model, the fixing portion includes a fixing flange.

[0014] According to the anti-oxidation structure provided by the present utility model, a connection cavity adapted to communicate with an anti-oxidation gas source is formed inside the fixing member, and the connection cavity communicates with the anti-oxidation cavity.

[0015] According to the anti-oxidation structure provided by the present utility model, it further includes an air inlet member adapted to introduce anti-oxidation gas into the anti-oxidation cavity. The air inlet member is arranged on the fixing member and communicates with the connection cavity.

[0016] According to the anti-oxidation structure provided by the present utility model, the anti-oxidation cover is a stainless steel anti-oxidation cover or a titanium alloy anti-oxidation cover, and the fixing member is a stainless steel fixing member or a titanium alloy fixing member.

[0017] On the other hand, the present utility model provides a wave soldering device, including:

[0018] A solder pot;

[0019] A support frame, the support frame is connected to the solder pot;

[0020] A driving device, the driving device is arranged on the support frame, and a transmission bearing is arranged at the output end of the driving device;

[0021] The anti-oxidation structure as described in any one of the above, the fixing member is connected to the support frame, and the transmission bearing is located inside the anti-oxidation cavity.

[0022] The anti-oxidation structure provided by the present utility model, by configuring the anti-oxidation cover and the fixing member to be detachably connected, when tin slag is generated inside the anti-oxidation cover, the mutually connected anti-oxidation cover and the fixing member can be detached, facilitating the cleaning of the inside of the anti-oxidation cover.

[0023] The additional aspects and advantages of the present utility model will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the present utility model. Description of the Drawings

[0024] In order to more clearly illustrate the technical solutions in the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0025] Figure 1 is one of the schematic diagrams of the anti-oxidation structure provided by the embodiment of the present utility model;

[0026] Figure 2 is the schematic diagram of the anti-oxidation cover in the anti-oxidation structure provided by the embodiment of the present utility model;

[0027] Figure 3 It is a schematic diagram of a fixing member in the anti-oxidation structure provided by an embodiment of the present utility model;

[0028] Figure 4 It is a schematic diagram of a wave soldering device provided by an embodiment of the present utility model.

[0029] Reference numerals:

[0030] 10. Anti-oxidation structure; 110. Anti-oxidation cover; 111. First threaded section; 112. Limiting portion; 120. Fixing member; 121. Second threaded section; 122. Fixing portion; 130. Air inlet member;

[0031] 20. Tin furnace; 30. Support frame; 40. Driving device; 50. Transmission bearing. Detailed implementation manners

[0032] To make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions in the present utility model will be clearly and completely described below with reference to the accompanying drawings in the present utility model. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0033] In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0034] In the description of the embodiments of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0035] In the embodiments of the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be 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 be that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0036] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present utility model. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0037] The following will be combined with Figures 1 to 4 to describe the anti-oxidation structure and wave soldering device provided by the present utility model.

[0038] It should be noted that the anti-oxidation structure 10 provided by the present utility model is suitable for being installed on a wave soldering device to prevent the liquid tin from contacting the air and generating tin slag from entering the transmission bearing 50 at the output end of the driving device 40, resulting in damage to the transmission bearing 50.

[0039] See Figures 1 to 3 As shown, the anti-oxidation structure 10 provided by the present utility model includes an anti-oxidation cover 110 and a fixing member 120. The fixing member 120 is detachably connected to the anti-oxidation cover 110, and an anti-oxidation cavity is formed inside the anti-oxidation cover 110 so that the transmission assembly of the wave soldering device is located inside the anti-oxidation cavity.

[0040] It should be noted that the transmission assembly includes a transmission bearing 50 and a transmission shaft. During the process of continuously rotating and stirring the solder, the transmission shaft is prone to react with oxygen in the air and be oxidized to form elemental tin due to the contact between the solder and the air. The tin slag is prone to climb upward along the transmission shaft and then enter the transmission bearing 50, resulting in the transmission bearing 50 being stuck and damaged.

[0041] The anti-oxidation structure 10 and wave soldering device provided by the present utility model, by configuring the anti-oxidation cover 110 and the fixing member 120 to be detachably connected, when solder dross is generated inside the anti-oxidation cover 110, the mutually connected anti-oxidation cover 110 and the fixing member 120 can be detached, facilitating the cleaning of the inside of the anti-oxidation cover 110. During specific implementation, the drive bearing 50 located therein can be protected by evacuating the anti-oxidation cavity or introducing anti-oxidation gas. Among them, the anti-oxidation gas can be nitrogen, carbon dioxide, and inert gases (such as helium), etc. In this embodiment, nitrogen is taken as an example. Introducing anti-oxidation gas inside the anti-oxidation cavity can isolate the contact between the liquid tin and the air, reduce the generation amount of solder dross inside the anti-oxidation cover 110, thereby reducing the solder dross adsorbed on the drive bearing 50 and preventing the drive bearing 50 from being damaged.

[0042] According to some embodiments of the present utility model, a cavity can be provided only inside the anti-oxidation cover 110 to form the above-mentioned anti-oxidation cavity, and the drive bearing 50 can be arranged inside the anti-oxidation cover 110 to protect it. On this basis, in some other embodiments, a cavity can be further provided inside the fixing member 120, and this cavity is communicated with the cavity inside the anti-oxidation cover 110. The cavity formed inside the fixing member 120 and the cavity formed inside the anti-oxidation cover 110 are communicated to form an anti-oxidation cavity, which can increase the volume of the anti-oxidation cavity, improve the protection effect, and the anti-oxidation gas can be introduced into the anti-oxidation cavity through the cavity formed inside the fixing member 120, improving the flexibility of pipeline connection. The fixing member 120 plays a fixing role and is used to connect with the support frame 30 of the wave soldering device, thereby fixing the anti-oxidation structure 10. During use, since the fixing member 120 is located above the anti-oxidation cover 110 and the cavity inside it is far from the liquid level of the liquid tin, therefore, on the premise of meeting the spatial layout, the drive bearing 50 is usually arranged in the cavity inside the fixing member 120.

[0043] See Figure 2 As shown, according to some embodiments of the present utility model, the lower part of the anti-oxidation cover 110 is a cylindrical structure, and an octagonal nut is provided on the upper part.

[0044] See Figures 1 to 3 As shown, according to some embodiments of the present utility model, the fixing member 120 is threadedly connected to the anti-oxidation cover 110. By configuring the fixing member 120 and the anti-oxidation cover 110 to be threadedly connected, it is convenient to install and disassemble the fixing member 120 and the anti-oxidation cover 110, and it is convenient to clean the solder dross inside the anti-oxidation cover 110 and the fixing member 120. In the case of protecting the drive bearing 50 by introducing anti-oxidation gas into the anti-oxidation cavity, the threaded connection between the fixing member 120 and the anti-oxidation cover 110 can also ensure the airtightness of the anti-oxidation cavity and prevent the anti-oxidation gas from overflowing through the connection position between the fixing member 120 and the anti-oxidation cover 110.

[0045] According to some embodiments of the present utility model, in order to further improve the airtightness of the anti-oxidation cavity, a thread sealing tape can be provided at the threaded connection position between the fixing member 120 and the anti-oxidation cover 110 to fill the incomplete surface defects at the threaded connection position between the fixing member 120 and the anti-oxidation cover 110 and prevent the leakage of anti-oxidation gas.

[0046] According to some embodiments of the present utility model, sealant can also be filled at the threaded connection position between the fixing member 120 and the anti-oxidation cover 110 to enhance the airtightness of the anti-oxidation cavity.

[0047] See Figures 1 to 3 As shown, according to some embodiments of the present utility model, one end of the anti-oxidation cover 110 is provided with a first thread section 111, and one end of the fixing member 120 is provided with a second thread section 121, and the first thread section 111 is in threaded cooperation with the second thread section 121. By respectively arranging the first thread section 111 and the second thread section 121 at the ends of the anti-oxidation cover 110 and the fixing member 120, it is convenient for the threaded connection between the anti-oxidation cover 110 and the fixing member 120, convenient for assembly, and can reduce the manufacturing difficulty of the anti-oxidation cover 110 and the fixing member 120.

[0048] Specifically, see Figures 1 to 3 As shown, in this embodiment, the upper end of the anti-oxidation cover 110 is provided with an internal thread section (the first thread section 111), and the lower end of the fixing member 120 is provided with an external thread section (the second thread section 121), and the internal thread section and the external thread section are in threaded cooperation.

[0049] According to some embodiments of the present utility model, an external thread section can also be provided on the anti-oxidation cover 110 and an internal thread section can be provided on the fixing member 120, as long as the anti-oxidation cover 110 and the fixing member 120 can be configured to be in threaded connection, and the present utility model does not make specific limitations thereto.

[0050] According to some embodiments of the present utility model, other detachable connection methods can also be adopted between the anti-oxidation cover 110 and the fixing member 120, such as flange connection and snap connection, etc. When the anti-oxidation cover 110 and the fixing member 120 are connected by flange connection, flanges can be respectively provided at the outer edge of the upper end of the anti-oxidation cover 110 and the outer edge of the lower end of the fixing member 120, and the anti-oxidation cover 110 and the fixing member 120 can be connected and fixed by a bolt and nut assembly. At this time, a sealing groove and a sealing ring can be provided between the mutually contacting end faces of the anti-oxidation cover 110 and the fixing member 120 to improve the airtightness at the connection position between the anti-oxidation cover 110 and the fixing member 120.

[0051] See Figures 1 to 3As shown, according to some embodiments of the present utility model, a limiting portion 112 is provided on the anti-oxidation cover 110, and the limiting portion 112 is adapted to limit the rotation of the anti-oxidation cover 110 along its own axis. Since the anti-oxidation cover 110 and the fixing member 120 are in threaded connection, during use, the vibration of the device may cause the anti-oxidation cover 110 to rotate, causing it to deviate from the set position or even fall off. By providing the limiting portion 112 on the anti-oxidation cover 110, it can be limited and prevented from rotating along its own axis, thereby improving the stability of the anti-oxidation cover 110 during use.

[0052] Specifically, referring to Figures 1 to 3 As shown, in this embodiment, the limiting portion 112 is a limiting boss provided at the upper end of the anti-oxidation cover 110, and the limiting boss has a plurality of limiting side walls. During use, by the external fixing portion 122 abutting against the limiting side walls and applying a limiting effect on the limiting boss, the rotation of the anti-oxidation cover 110 can be prevented. In addition, this limiting boss structure also facilitates the disassembly and assembly of the anti-oxidation cover 110 using disassembly and assembly tools (such as a wrench).

[0053] According to some embodiments of the present utility model, the limiting portion 112 can also be provided in the middle or at the lower end of the anti-oxidation cover 110. And the limiting portion 112 is not limited to the above-mentioned limiting boss shape, as long as the limiting portion 112 can be in limiting cooperation with the external fixing portion 122 to achieve the purpose of preventing the anti-oxidation cover 110 from rotating along its own axis. For example, a limiting hole (which does not communicate with the cavity inside the anti-oxidation cover 110) can be provided on the anti-oxidation cover 110, and during use, in cooperation with an external limiting pin, the anti-oxidation cover 110 can also be limited.

[0054] Referring to Figures 1 to 3 As shown, according to some embodiments of the present utility model, a fixing portion 122 is provided on the fixing member 120, and the fixing portion 122 is adapted to fix the anti-oxidation structure 10 to the wave soldering device. By providing the fixing portion 122 on the fixing member 120, a specific and pre-designed fixing space is provided through this fixing portion 122, which facilitates establishing a connection relationship between the fixing member 120 and an external component (the support frame 30 of the wave soldering device). This design helps to ensure the firmness and stability of the connection, thereby improving the safety and reliability of the device.

[0055] Referring to Figures 1 to 3 As shown, according to some embodiments of the present utility model, the fixing portion 122 includes a fixing flange. A plurality of bolt through holes are evenly distributed along the circumference of the fixing flange. During installation, the fixing flange is fixed to an external component (the support frame 30 of the wave soldering device) through a bolt and nut assembly. Its structure is simple, the disassembly and assembly are convenient, and the stability is high.

[0056] Referring to Figures 1 to 3As shown, according to some embodiments of the present utility model, a connection cavity adapted to communicate with an anti-oxidation gas source is formed in the fixing member 120, and the connection cavity communicates with the anti-oxidation cavity. By forming the anti-oxidation cavity and the connection cavity in the anti-oxidation cover 110 and the fixing member 120 respectively, the volume of the internal cavity of the anti-oxidation structure can be increased, and the protection effect on the transmission bearing 50 can be improved. And since the connection cavity is located above the anti-oxidation cavity, its distance from the liquid tin surface is relatively far, and the intake air can be buffered through the connection cavity to prevent the intake air from affecting the liquid tin surface.

[0057] See Figures 1 to 3 As shown, according to some embodiments of the present utility model, the anti-oxidation structure 10 further includes an intake member 130 adapted to introduce an anti-oxidation gas into the anti-oxidation cavity. The intake member 130 is provided on the fixing member 120 and communicates with the connection cavity. By providing the intake member 130, it is convenient to connect the pipeline for transporting the anti-oxidation gas to the anti-oxidation cavity through the intake member 130, and the intake member 130 is convenient for sealing connection with the pipeline for transporting the anti-oxidation gas, improving the airtightness of the device.

[0058] Specifically, in this embodiment, the intake member 130 is an intake nozzle, an intake hole is provided on the side wall of the fixing member 120, and the intake nozzle is provided at the intake hole by welding. The connection position between the intake nozzle and the intake hole can be sealed by welding without additionally providing a sealing structure at this place.

[0059] According to some embodiments of the present utility model, the anti-oxidation cover 110 is a stainless steel anti-oxidation cover 110 or a titanium alloy anti-oxidation cover 110, and the fixing member 120 is a stainless steel fixing member 120 or a titanium alloy fixing member 120. Stainless steel and titanium alloy have good corrosion resistance and heat resistance, and have good strength and stiffness, and their service life is long.

[0060] Next, see Figures 1 to 3 , and describe in detail the anti-oxidation structure 10 according to the embodiments of the present utility model.

[0061] The anti-oxidation structure 10 includes an anti-oxidation cover 110, a fixing member 120 and an intake member 130. A first threaded section 111 (internal threaded section) is provided at the upper end of the anti-oxidation cover 110, and a second threaded section 121 (external threaded section) is provided at the lower end of the fixing member 120. The anti-oxidation cover 110 and the fixing member 120 are threadedly connected through the first threaded section 111 and the second threaded section 121, which is convenient for disassembly and cleaning of the tin slag in the anti-oxidation cover 110 or the fixing member 120.

[0062] An anti-oxidation cavity is formed inside the anti-oxidation cover 110, and a connection cavity is provided inside the fixing member 120. The connection cavity and the anti-oxidation cavity are formed. During use, the anti-oxidation cavity can be evacuated or filled with anti-oxidation gas to protect the transmission bearing 50 inside. The air inlet member 130 is welded to the side wall of the fixing member 120 and communicates with the connection cavity. The anti-oxidation gas can be introduced into the connection cavity through the air inlet member 130, and the connection cavity can play a certain buffering role for the introduced anti-oxidation gas to prevent the anti-oxidation gas from affecting the liquid surface of the liquid tin.

[0063] A limiting boss is provided at the upper end of the anti-oxidation cover 110, and the limiting boss has a plurality of limiting side walls. During use, by abutting the external fixing part 122 against the limiting side wall and applying a limiting effect on the limiting boss, the anti-oxidation cover 110 can be prevented from rotating. In addition, this limiting boss structure also facilitates the disassembly and assembly of the anti-oxidation cover 110 using disassembly and assembly tools (such as wrenches).

[0064] A flange is provided at the upper end of the fixing member 120, and a plurality of bolt through holes are evenly distributed along the circumference of the fixing flange. During installation, the fixing flange is fixed to an external component (the support frame 30 of the wave soldering device) through a bolt and nut assembly. Its structure is simple, the disassembly and assembly are convenient, and the stability is high.

[0065] See Figure 4 As shown, the wave soldering device provided by the present invention includes a tin furnace 20, a support frame 30, a driving device 40, and the anti-oxidation structure 10 described in any one of the above embodiments. Among them, the support frame 30 is connected to the tin furnace 20, the driving device 40 is arranged on the support frame 30, a transmission bearing 50 is provided at the output end of the driving device 40, the fixing member 120 is connected to the support frame 30, and the transmission bearing 50 is located inside the anti-oxidation cavity.

[0066] For the wave soldering device provided by the present invention, since the above anti-oxidation structure 10 is used to protect the transmission bearing 50, it can prevent the contact between the liquid tin and the air through the anti-oxidation structure 10, reduce the generation of tin dross inside the oxidation protection cover cavity, and reduce the tin dross adsorbed on the transmission bearing 50. And by configuring the anti-oxidation cover 110 and the fixing member 120 to be detachably connected, it is convenient to clean the tin dross inside the anti-oxidation cover 110 and the fixing member 120.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An anti-oxidation structure, characterized in that, Suitable for installation on a wave soldering device, including: An anti-oxidation cover; A fixing member, the fixing member being detachably connected to the anti-oxidation cover; An anti-oxidation cavity is formed inside the anti-oxidation cover so that the transmission component of the wave soldering device is located inside the anti-oxidation cavity.

2. The anti-oxidation structure according to claim 1, wherein, The fixing member is threadedly connected to the anti-oxidation cover.

3. The anti-oxidation structure according to claim 2, wherein, One end of the anti-oxidation cover is provided with a first threaded section, and one end of the fixing member is provided with a second threaded section, and the first threaded section is in threaded cooperation with the second threaded section.

4. The anti-oxidation structure according to claim 2, characterized in that, The anti-oxidation cover is provided with a limiting portion, and the limiting portion is adapted to limit the anti-oxidation cover from rotating along its own axis.

5. The anti-oxidation structure according to claim 1, characterized in that, The fixing member is provided with a fixing portion, and the fixing portion is adapted to fix the anti-oxidation structure to the wave soldering device.

6. The anti-oxidation structure according to claim 5, characterized in that, The fixing portion includes a fixing flange.

7. The anti-oxidation structure according to any one of claims 1 to 6, characterized in that, A connection cavity adapted to communicate with an anti-oxidation gas source is formed inside the fixing member, and the connection cavity communicates with the anti-oxidation cavity.

8. The anti-oxidation structure according to claim 7, wherein It further includes an air inlet member adapted to introduce anti-oxidation gas into the anti-oxidation cavity, the air inlet member is provided on the fixing member, and the air inlet member communicates with the connection cavity.

9. The anti-oxidation structure according to any one of claims 1 to 6, characterized in that, The anti-oxidation cover is a stainless steel anti-oxidation cover or a titanium alloy anti-oxidation cover, and the fixing member is a stainless steel fixing member or a titanium alloy fixing member.

10. A wave soldering device, characterized in that, Including: A tin furnace; A support frame, the support frame being connected to the tin furnace; A driving device, the driving device is provided on the support frame, and a transmission bearing is provided at the output end of the driving device; The anti-oxidation structure according to any one of claims 1 to 9, the fixing member is connected to the support frame, and the transmission bearing is located inside the anti-oxidation cavity.

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