Oil leakage prevention gearbox and ice maker

Abstract

The utility model discloses an anti-oil-leakage gear box and an ice maker, the ice maker comprises an anti-oil-leakage gear box, and the anti-oil-leakage gear box comprises a gear box shell, a transmission mechanism and an anti-oil-leakage mechanism. A sealed containing cavity is formed in the gearbox shell. The transmission mechanism comprises a power input assembly, a gear transmission assembly and a power output assembly which are sequentially connected. The power output assembly comprises a power output shaft, and the power output shaft extends out of one side face of the gearbox shell. The oil leakage prevention mechanism comprises an exhaust assembly, and the exhaust assembly communicates with the sealed containing cavity and the outer space of the gearbox shell. When the oil leakage prevention gearbox works, the exhaust assembly is located on the upper side face of the gearbox shell. According to the oil-leakage-proof gear box, the exhaust assembly is additionally arranged, the problem of oil leakage caused by temperature rise of the internal working environment of a gear box on an existing ice maker is well solved, and it is ensured that the waterproof capacity of the gear box is not weakened.

Description

Technical Field

[0001] The utility model relates to the technical field of ice making machines, in particular to an anti-leakage oil gear box and an ice making machine with the anti-leakage oil gear box. Background Art

[0002] As an important part of the transmission system and transmission mechanism, the gearbox is crucial to ensure its normal operation and extend the service life of the transmission gears. Generally, in order to ensure the smooth operation of the gearbox and extend the service life of the gearbox, it is an essential step to apply lubricating grease to the meshing transmission gears in the gearbox.

[0003] In the field of ice making machines, gearboxes play a key role, which are used to drive the movement of the refrigerant in the ice making machine, thereby realizing the refrigeration and ice making process. However, in the current structure of ice making machines, the gearbox is mostly installed under the water tank. In order to prevent the internal structure of the gearbox from getting wet, the gearbox usually adopts a sealed structure design.

[0004] Although the sealing structure has achieved good results in moisture-proofing, as the gears generate heat during operation, the temperature inside the gearbox rises, and the pressure inside the gearbox gradually increases, causing the lubricating grease to be easily squeezed out from the various connection gaps or shaft holes on the gearbox housing, causing the gearbox to leak oil. This not only pollutes the appearance of the gearbox and affects its aesthetics, but also causes the loss of lubricating grease inside the gearbox, thereby threatening the normal transmission of the gears.

[0005] In order to solve the problems that occur in the gear box operation of the ice maker, it is key to find a gear box that is waterproof and oil-proof. Utility Model Content

[0006] In order to overcome at least one of the defects of the above-mentioned prior art, one of the purposes of the present utility model is to provide an oil leakage-proof gear box. The oil leakage-proof gear box of the present scheme mainly solves the oil leakage problem of the gear box on the existing ice maker caused by the internal working environment heating by adding exhaust holes, and ensures that the waterproof ability of the gear box is not weakened.

[0007] In order to overcome at least one defect of the above-mentioned prior art, the second purpose of the present utility model is to provide an ice maker. The ice maker in this scheme has an anti-oil leakage gearbox proposed in this scheme. The anti-oil leakage gearbox is used as the transmission system on the ice maker, and problems such as oil leakage of the transmission system will not occur, thereby ensuring the cleanliness and beauty of the ice maker, and also ensuring that the ice maker can work normally for a long time.

[0008] The technical solution adopted by the utility model to solve the problem is:

[0009] An oil leakage-proof gearbox, comprising:

[0010] A gearbox housing, wherein the gearbox housing has a sealed accommodating cavity;

[0011] A transmission mechanism, the transmission mechanism comprising a power input assembly, a gear transmission assembly and a power output assembly connected in sequence; the gear transmission assembly is placed in the sealed accommodating chamber, the power output assembly comprises a power output shaft, and the power output shaft extends from a side surface of the gear box housing;

[0012] The oil leakage prevention mechanism comprises an exhaust component, wherein the exhaust component connects the sealed accommodating chamber with the external space of the gear box housing; when the oil leakage prevention gear box is working, the exhaust component is located on the upper side of the gear box housing.

[0013] In the oil leakage prevention gearbox of the present scheme, an exhaust assembly is arranged on the gearbox casing. When the gearbox is working, its sealed accommodating chamber is connected with the external space environment of the gearbox. The sealed accommodating chamber will not have a high temperature and high pressure environment due to the working temperature rise, and the lubricating grease on the gear transmission assembly will not be squeezed out, thereby achieving the purpose and effect of oil leakage prevention of the gearbox.

[0014] Furthermore, the exhaust assembly includes an exhaust hole, and the exhaust hole communicates with the sealed accommodating chamber and the external space of the gear box housing.

[0015] Further, the gearbox housing comprises a first shell and a second shell, the first shell and the second shell are detachably sealed and connected to form the sealed accommodating cavity;

[0016] The first housing includes a first panel and a first sleeve, one end of the first sleeve is connected to the first panel and is integrally formed to form a first accommodating cavity; the power output shaft extends from the first panel, and the exhaust assembly is arranged on the first panel;

[0017] The second housing includes a second panel and a second sleeve, one end of the second sleeve is connected to the second panel and is integrally formed to form a second accommodating cavity;

[0018] The second panel is arranged opposite to the first panel, the second sleeve is detachably connected to the first sleeve, and the first accommodating chamber is communicated with the second accommodating chamber to form the sealed accommodating chamber.

[0019] Furthermore, a relief hole is provided on the side surface of the second sleeve, and the power input assembly is provided outside the sealed accommodating chamber and connected to the gear transmission assembly via the relief hole;

[0020] The power input assembly includes a motor, and the motor shaft of the motor extends from the avoidance hole into the second accommodating cavity and is connected to the gear transmission assembly.

[0021] Furthermore, the first sleeve is detachably fixedly connected to a connecting plate at an end away from the first panel, and the second sleeve is detachably connected to the connecting plate at an end away from the second panel.

[0022] Furthermore, a first connecting flange is provided at a connecting end of the first sleeve and the connecting plate, a first connecting hole is provided on the first connecting flange, and the first sleeve is detachably and hermetically connected to the connecting plate through the first connecting hole;

[0023] A waterproof coating is coated on the surface of the first connecting flange in contact with the connecting plate;

[0024] A second connecting flange is provided at the connecting end of the second sleeve and the connecting plate, a second connecting flange is provided with a second connecting hole, and the second sleeve is detachably and hermetically connected to the connecting plate through the second connecting hole;

[0025] The first sleeve is coaxially arranged with the second sleeve, and the distance between the first connecting hole and the axis of the first sleeve is greater than the distance between the second connecting hole and the axis of the second sleeve;

[0026] An oil-proof cover plate is provided on the surface of the connecting plate facing the first panel, and the oil-proof cover plate covers the second connecting hole.

[0027] Furthermore, the outer end of the exhaust hole is connected to a waterproof column, the exhaust hole passes through the waterproof column, and the waterproof column is integrally formed with the first shell.

[0028] Furthermore, a bearing hole is provided on the first panel, a bearing sleeve is fixedly provided in the bearing hole, a bearing is provided in the bearing sleeve, and the power output shaft is fixedly connected to the bearing;

[0029] The bearing sleeve is sealed and connected to the bearing hole. A sealing ring is arranged at the outer end of the bearing sleeve. The sealing ring is sleeved on the power output shaft, and a sealing retaining spring is arranged on the side of the sealing ring away from the bearing sleeve.

[0030] Furthermore, reinforcing ribs are provided on the outer surface of the first panel, and drainage gaps are provided on the reinforcing ribs.

[0031] An ice maker comprises a water tank and the aforementioned oil leakage prevention gear box, wherein the oil leakage prevention gear box is installed below the water tank, and the power output shaft on the oil leakage prevention gear box is arranged vertically upward.

[0032] The ice-making machine of this scheme adopts the oil-leakage-proof gear box proposed in this scheme as the transmission system, which effectively avoids the oil leakage problem of the gear box and ensures that the ice-making machine is clean, beautiful and in a long-term working state.

[0033] In summary, the oil leakage prevention gearbox provided by the utility model has the following technical effects:

[0034] 1. The gearbox housing is sealed to make the gearbox waterproof and oil-proof, thus avoiding the lubricating grease in the gearbox from overflowing.

[0035] 2. An exhaust component is arranged on the side surface of the gear box housing, that is, when the oil leakage-proof gear box is working, the exhaust component is located on the top surface of the gear box housing, so as to realize exhaust during the operation of the gear box, and discharge the high-temperature and high-pressure gas generated by the heat generated by the transmission operation in the gear box, so as to avoid the high-temperature and high-pressure environment in the gear box squeezing the lubricating grease in the gear box, and avoid the lubricating grease being squeezed out from the connection position on the gear box housing, so as to avoid oil leakage in the gear box.

[0036] The utility model provides an ice making machine with the following technical effects:

[0037] By adopting an oil-leakage-proof gear box with oil-leakage-proof capability as the transmission system, the oil leakage problem of the gear box of the ice maker when it is working is effectively avoided, ensuring that the ice maker is clean, beautiful and in long-term working condition. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 The utility model is a schematic structural diagram of an embodiment of an oil leakage prevention gearbox.

[0039] Figure 2 for Figure 1 Another view of the state diagram.

[0040] Figure 3 for Figure 1 Top view of the .

[0041] Figure 4 for Figure 3 AA section view.

[0042] Figure 5 for Figure 1 Exploded diagram.

[0043] Figure 6 The utility model is a schematic diagram of the internal structure of the first shell of an oil leakage-proof gearbox.

[0044] The meanings of the reference numerals are as follows:

[0045] 100. Anti-leakage gearbox;

[0046] 1. Gearbox housing;

[0047] 11. first shell; 110. first accommodating cavity; 111. first panel; 112. first sleeve; 113. first connecting flange; 114. first connecting hole; 115. reinforcing rib; 116. drainage notch;

[0048] 12. second housing; 120. second accommodating cavity; 121. second panel; 122. second sleeve; 123. second connecting flange; 124. second connecting hole;

[0049] 13. Connecting plate;

[0050] 14. Oil-proof cover;

[0051] 2. Transmission mechanism;

[0052] 21. Power input assembly; 211. Motor sealing housing; 212. Motor shaft;

[0053] 22. Gear transmission assembly; 221. Primary transmission assembly; 222. Secondary transmission assembly; 223. Third transmission assembly;

[0054] 23. Power output assembly; 230. Power output shaft; 231. Bearing sleeve; 232. Sealing ring; 233. Sealing retaining ring; 234. Bearing hole;

[0055] 3. Anti-oil leakage mechanism;

[0056] 31. Exhaust hole;

[0057] 32. Waterproof column. DETAILED DESCRIPTION

[0058] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0059] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0060] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0061] The utility model discloses an oil leakage-proof gear box. Figure 1 and Figure 2 , which is a schematic structural diagram of an embodiment of an oil leakage prevention gearbox of the utility model.

[0062] like Figure 2 As shown, an oil leakage prevention gearbox includes a gearbox housing 1, a transmission mechanism 2 and an oil leakage prevention mechanism 3. The gearbox housing 1 has a sealed accommodating chamber. The transmission mechanism 2 includes a power input assembly, a gear transmission assembly and a power output assembly connected in sequence. The gear transmission assembly is placed in the sealed accommodating chamber, and the power output assembly includes a power output shaft, which extends from one side of the gearbox housing. The oil leakage prevention mechanism 3 includes an exhaust assembly, which connects the sealed accommodating chamber with the external space of the gearbox housing. When the oil leakage prevention gearbox is working, the exhaust assembly is located on the upper side of the gearbox housing.

[0063] The transmission mechanism 2 is arranged in the gear box housing 1, and the oil leakage prevention mechanism 3 is arranged on the gear box housing 1, which ensures that there is no oil leakage during the operation of the gear box, ensures the appearance and normal operation of the gear box, and prolongs the service life of the gear box.

[0064] The gearbox housing has a sealed accommodating cavity to make the gearbox waterproof and oil-proof, thereby preventing the lubricating grease in the gearbox from overflowing.

[0065] An exhaust component is arranged on the side surface of the gear box housing, that is, when the oil leakage prevention gear box is working, the exhaust component is located on the top surface of the gear box housing, so as to realize exhaust during the operation of the gear box, and discharge the high-temperature and high-pressure gas generated in the gear box due to the heat generated by the transmission operation, so as to avoid the high-temperature and high-pressure environment in the gear box squeezing the lubricating grease in the gear box, and avoid the lubricating grease being squeezed out from the connection position on the gear box housing, so as to avoid oil leakage in the gear box.

[0066] like Figure 4 The figure shows a schematic diagram of the structure of an embodiment of the gearbox housing 1. In order to facilitate the production, processing, installation, repair and maintenance of the gearbox housing 1, and to facilitate the setting and installation of structural components such as the transmission mechanism 2, the gearbox housing 1 is set as a split structure. That is, the gearbox housing 1 includes a first shell 11 and a second shell 12, and the first shell 11 and the second shell 12 are detachably sealed and connected to form the above-mentioned sealed accommodating chamber. The oil-proof gearbox works in such a way that the first shell is located above the second shell, and the power output shaft extends from the upper side of the gearbox housing. The sealed accommodating chamber is used to install the transmission mechanism 2, and finally the oil leakage-proof gearbox is installed under the water tank as the transmission system part of the ice maker to achieve waterproof and moisture-proof, while also preventing oil leakage.

[0067] like Figure 4 and Figure 5As shown, it is a schematic diagram of the structure of an embodiment of the transmission mechanism 2. The transmission mechanism 2 includes a power input assembly 21, a gear transmission assembly 22 and a power output assembly 23 connected in sequence. The gear transmission assembly 22 and the power output assembly 23 are arranged inside the sealed accommodating chamber, and the power input assembly 21 is arranged outside the sealed accommodating chamber. The power output assembly 23 includes a power output shaft 230, and the power output shaft 230 extends from the side of the first shell 11 away from the second shell 12. When the power output shaft 230 is working, it is in a vertical upward state. The power output shaft 230 extends from the top surface of the gear box housing 1. The oil leakage-proof gear box 100 equipped with the transmission mechanism 2 in this embodiment is installed under the water tank when installed in the ice maker, and the power output shaft 230 is in a vertical upward state. The side of the gear box housing 1 where the power output shaft 230 extends faces the water tank, which is convenient for the transmission mechanism 2 to work, drive the refrigerant in the refrigeration system to move, and realize refrigeration and ice making.

[0068] like Figure 4 and Figure 5 As shown, the gear transmission assembly 22 includes a primary transmission assembly 221, a secondary transmission assembly 222 and a tertiary transmission assembly 223. The primary transmission assembly 221 is connected to the power input assembly 21 and driven by the power input assembly 21. The secondary transmission assembly 222 is connected to the primary transmission assembly 221 and driven by the primary transmission assembly. The tertiary transmission assembly 223 is connected to the secondary transmission assembly 222 and driven by the secondary transmission assembly 222. The power output shaft 230 is connected to the tertiary transmission assembly 223 and driven to rotate by the tertiary transmission assembly 223.

[0069] The primary transmission assembly 221 includes a meshing worm wheel and a worm, one end of the worm is connected to the power input assembly 21, the power input assembly 21 drives the worm to rotate, the worm drives the worm wheel to rotate, and the worm wheel is connected to the secondary transmission assembly 222 and drives the secondary transmission assembly 222 to transmit. The primary transmission assembly 221 adopts a worm gear transmission structure, which has a compact structure, stable transmission, and low noise.

[0070] The secondary transmission assembly 222 is a planetary gear mechanism, including a first sun gear, a plurality of second planetary gears, a first external fixed inner gear ring and a first planet carrier. The worm gear shaft of the worm gear is fixed to the wheel shaft of the first sun gear, driving the first sun gear to rotate synchronously, the first sun gear drives the second planetary gear to rotate and revolve, the first planet carrier is connected to the second planetary gear, and is driven by the second planetary gear to rotate, and the first planet carrier rotates with the wheel shaft of the first sun gear as the axis. The first planet carrier is connected to the tertiary transmission assembly 223, driving the tertiary transmission assembly 223 to transmit.

[0071] The three-stage transmission assembly 223 is also a planetary gear mechanism, including a second sun gear, a plurality of second planetary gears, a second external fixed inner gear ring and a second planet carrier. The worm gear shaft of the worm gear is fixed to the wheel shaft of the second sun gear, driving the second sun gear to rotate synchronously. The second sun gear drives the second planetary gear to rotate and revolve. The second planet carrier is connected to the second planetary gear and is driven by the second planetary gear to rotate. The second planet carrier rotates with the wheel shaft of the second sun gear as the axis. The power output shaft 230 is fixed to the second planet carrier, rotates synchronously with the second planet carrier, outputs rotational motion, and realizes power output. The power output shaft 230 rotates with the wheel shaft of the second sun gear as the axis.

[0072] like Figure 2 The diagram is a schematic diagram of the structure of an embodiment of the oil leakage prevention mechanism 3. The oil leakage prevention mechanism 3 includes an exhaust assembly, which is arranged on the side of the first shell away from the second shell. The exhaust assembly connects the sealed accommodating chamber with the external space of the gearbox housing 1. By setting the exhaust assembly, when the gearbox is working, its sealed accommodating chamber is connected with the external space environment of the gearbox, and the sealed accommodating chamber will not have a high temperature and high pressure environment due to the working temperature rise, and the lubricating grease on the gear transmission assembly will not be squeezed out, so as to achieve the purpose and effect of preventing the oil leakage of the gearbox. The exhaust assembly is arranged on the side of the first shell away from the second shell, that is, the exhaust assembly is located on the top surface of the gearbox housing 1, so as to achieve upward exhaust and avoid the oil leakage problem of the exhaust assembly itself. At the same time, when the gearbox is working, the internal gas heats up, the air pressure rises, and the gas goes up. At this time, the exhaust assembly is arranged on the top surface of the gearbox housing 1, and the exhaust effect is best. By setting the exhaust assembly, the oil and gas in the gearbox are separated, the lubricating grease in the gearbox is prevented from overflowing, and the normal operation of the gearbox is ensured, while the overflow of grease is avoided, which affects the beauty of the gearbox and the cleanliness of the ice maker.

[0073] In this solution, the exhaust assembly includes an exhaust hole 31, and the exhaust hole 31 communicates the sealed accommodating cavity with the external space of the gearbox housing 1. The exhaust assembly is set as an exhaust hole, which has a simple structure, is easy to process, and has a low manufacturing cost.

[0074] like Figure 4 and Figure 5 As shown, an embodiment structure of the first housing 11 is shown. In order to facilitate the processing and installation of the first housing and ensure that the first housing has good oil leakage prevention and waterproof performance, the first housing 11 includes a first panel 111 and a first sleeve 112. One end of the first sleeve 112 is connected to the first panel 111 and is integrally formed to form a first accommodating chamber 110. The first accommodating chamber 110 is a semi-open cavity with good waterproof, moisture-proof and oil leakage prevention capabilities. The power output shaft 230 extends from the first panel 111, and the exhaust hole 31 is provided on the first panel 111.

[0075] like Figure 4and Figure 5 The figure shows an embodiment structure of the second shell 12. Similarly, in order to facilitate the processing and installation of the second shell and ensure that the second shell has good oil leakage prevention and waterproof performance, the second shell 12 includes a second panel 121 and a second sleeve 122. One end of the second sleeve 122 is connected to the second panel 121 and is integrally formed to form a second accommodating chamber 120. When the first shell and the second shell are connected and installed, in order to ensure that the gear box housing 1 formed by the first shell and the second shell has strong waterproof and oil leakage prevention capabilities as a whole, the second panel 121 is arranged opposite to the first panel 111, and the second sleeve 122 is detachably connected to the first sleeve 112, and the first accommodating chamber 110 and the second accommodating chamber 120 are connected to form a sealed accommodating chamber. Figure 1 and Figure 4 As shown, the connection position of the first housing and the second housing is located in the middle section of the gearbox housing 1, so that the upper and lower parts at the connection position are an integrated structure without a connection seam, etc., and have good oil leakage prevention capabilities, that is, the second accommodating chamber 120 itself has good oil leakage prevention capabilities. The first accommodating chamber 110 is an upper half chamber, and the opening faces downward, so the first accommodating chamber 110 has good waterproof capabilities.

[0076] like Figure 2 and Figure 3 As shown, in order to further improve and realize the waterproof and oil leakage prevention capabilities of the gearbox housing 1, a avoidance hole is provided on the side of the second sleeve 122, and the power input assembly 21 is arranged outside the sealed accommodating cavity and connected to the gear transmission assembly 22 through the avoidance hole. In this way, there will be no connection hole at the bottom of the second housing 12, avoiding the problem of grease overflow on the second housing 12.

[0077] Generally, the power input assembly 21 includes a motor, and the motor shaft 212 of the motor extends from the avoidance hole into the second accommodating chamber and is connected to the gear transmission assembly 22. The electrode shaft extends from the side of the second accommodating chamber 120 into the second accommodating chamber, avoiding the opening of the bottom of the second accommodating chamber and avoiding the oil leakage problem of the second accommodating chamber.

[0078] In order to achieve waterproofing of the motor, a motor sealing housing 211 is provided outside the motor.

[0079] In order to realize the quick, simple and stable connection between the first shell and the second shell, a connecting plate 13 is detachably fixedly connected to the end of the first sleeve 112 away from the first panel 111, and the end of the second sleeve 122 away from the second panel 121 is detachably connected to the connecting plate 13. The connecting plate 13 realizes the installation and connection of the first sleeve and the second sleeve, and the connection is stable, avoiding deformation and other problems at the connection part of the first sleeve and the second sleeve, and avoiding oil leakage at the connection part of the first sleeve and the second sleeve due to deformation.

[0080] In order to further achieve a stable connection between the first sleeve and the second sleeve and avoid deformation of the first sleeve and the second sleeve during operation, a first connection flange 113 is provided at the connection end between the first sleeve 112 and the connection plate 13, a first connection hole 114 is provided on the first connection flange 113, and the first sleeve 112 is detachably sealed and connected to the connection plate 13 through the first connection hole 114. A second connection flange 123 is provided at the connection end between the second sleeve 122 and the connection plate 13, a second connection hole 124 is provided on the second connection flange 123, and the second sleeve 122 is detachably sealed and connected to the connection plate 13 through the second connection hole 124. When connected, the first sleeve 112 and the second sleeve 122 are coaxially arranged, and are connected to the connection plate through the first connection hole 114 and the second connection hole 124, respectively.

[0081] In order to further achieve a stable connection between the first sleeve and the second sleeve and avoid deformation of the connecting plate, it is necessary to ensure that the distance between the first connecting hole 114 and the axis of the first sleeve 112 is greater than the distance between the second connecting hole 124 and the axis of the second sleeve 122, that is, the second sleeve connection position is located inside the first sleeve connection position.

[0082] In order to avoid oil leakage at the connection position between the second sleeve and the connection plate, an oil-proof cover plate 14 is provided on the surface of the connection plate 13 facing the first panel 111, and the oil-proof cover plate 14 covers the second connection hole 124. The oil-proof cover plate 14 covers the second connection hole 124, and the lubricating grease in the first accommodating cavity will not drip into the second connection hole 124, and the second connection hole 124 will not have oil leakage. The first connection hole is located outside the second connection hole, and the first connection flange 113 and the connection plate are surface-sealed, and the first connection hole position will not have oil leakage.

[0083] In order to further prevent oil leakage at the connection position between the first connection flange and the connection plate, a waterproof coating is coated on the surface of the first connection flange in contact with the connection plate. The waterproof coating forms a waterproof coating, which fills the gap between the upper and lower surfaces of the first connection flange in contact with the connection plate, thereby preventing oil leakage at the connection position between the first connection flange and the connection plate.

[0084] In order to achieve waterproofness at the position of the exhaust hole 31, a waterproof column 32 is connected to the outer end of the exhaust hole, the exhaust hole passes through the waterproof column 32, the waterproof column 32 is integrally formed with the first shell 11, and is connected to the outer surface of the first panel in a convex shape. The arrangement of the waterproof column 32 prevents water drops dripping on the first shell from entering the first shell through the exhaust hole.

[0085] To facilitate installation of the power output shaft 230 , a bearing hole 234 is provided on the first panel 111 , a bearing sleeve 231 is fixedly sleeved in the bearing hole 234 , a bearing is sleeved in the bearing sleeve 231 , and the power output shaft 230 is fixedly connected to the bearing.

[0086] In order to achieve waterproof and oil leakage prevention at the extended position of the power output shaft 230 on the first housing, the bearing sleeve 231 is sealed and connected with the bearing hole 234, and a sealing ring 232 is provided at the outer end of the bearing sleeve 231. The sealing ring 232 is sleeved on the power output shaft 230, and a sealing retaining spring 233 is provided on the side of the sealing ring 232 away from the bearing sleeve 231. The sealing retaining spring 233 presses the sealing ring 232 to achieve waterproof and oil leakage prevention at the position of the bearing hole 234.

[0087] In order to improve the strength of the first shell, a reinforcing rib 115 is provided on the outer surface of the first panel 111 , and a drainage notch 116 is provided on the reinforcing rib 115 , and the drainage notch 116 timely discharges water and water drops dripping on the first panel.

[0088] In this solution, an ice maker is proposed based on the aforementioned oil leakage prevention gearbox 100. An ice maker comprises a water tank and the aforementioned oil leakage prevention gearbox 100, the oil leakage prevention gearbox 100 is installed below the water tank, and the power output shaft 230 on the oil leakage prevention gearbox 100 is arranged vertically upward.

[0089] The ice-making machine of the present solution adopts the oil-leakage-proof gear box 100 proposed in the present solution as the transmission system, which effectively avoids the oil leakage problem of the gear box and ensures that the ice-making machine is clean, beautiful and in a long-term working state.

[0090] The technical means disclosed in the solution of the utility model are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.

Claims

1. An oil leakage prevention gearbox, characterized in that: include: A gearbox housing, wherein the gearbox housing has a sealed accommodating cavity; A transmission mechanism, the transmission mechanism comprising a power input assembly, a gear transmission assembly and a power output assembly connected in sequence; the gear transmission assembly is placed in the sealed accommodating chamber, the power output assembly comprises a power output shaft, and the power output shaft extends from a side surface of the gear box housing; The oil leakage prevention mechanism comprises an exhaust component, wherein the exhaust component connects the sealed accommodating chamber with the external space of the gear box housing; when the oil leakage prevention gear box is working, the exhaust component is located on the upper side of the gear box housing.

2. The oil leakage prevention gearbox according to claim 1, characterized in that: The exhaust assembly includes an exhaust hole, and the exhaust hole communicates with the sealed accommodating chamber and the external space of the gear box housing.

3. The oil leakage prevention gearbox according to claim 2, characterized in that: The gearbox housing comprises a first shell and a second shell, wherein the first shell is detachably sealed to the second shell to form the sealed accommodating cavity; The first housing includes a first panel and a first sleeve, one end of the first sleeve is connected to the first panel and is integrally formed to form a first accommodating cavity; the power output shaft extends from the first panel, and the exhaust assembly is arranged on the first panel; The second housing includes a second panel and a second sleeve, one end of the second sleeve is connected to the second panel and is integrally formed to form a second accommodating cavity; The second panel is arranged opposite to the first panel, the second sleeve is detachably connected to the first sleeve, and the first accommodating chamber is communicated with the second accommodating chamber to form the sealed accommodating chamber.

4. The oil leakage prevention gearbox according to claim 3, characterized in that: A relief hole is provided on the side surface of the second sleeve, and the power input assembly is arranged outside the sealed accommodating chamber and connected to the gear transmission assembly through the relief hole; The power input assembly includes a motor, and the motor shaft of the motor extends from the avoidance hole into the second accommodating cavity and is connected to the gear transmission assembly.

5. The oil leakage prevention gearbox according to claim 3, characterized in that: The first sleeve is detachably fixedly connected to a connecting plate at an end away from the first panel, and the second sleeve is detachably connected to the connecting plate at an end away from the second panel.

6. The oil leakage prevention gearbox according to claim 5, characterized in that: A first connecting flange is provided at the connecting end of the first sleeve and the connecting plate, a first connecting hole is provided on the first connecting flange, and the first sleeve is detachably and hermetically connected to the connecting plate through the first connecting hole; A waterproof coating is coated on the surface of the first connecting flange in contact with the connecting plate; A second connecting flange is provided at the connecting end of the second sleeve and the connecting plate, a second connecting flange is provided with a second connecting hole, and the second sleeve is detachably and hermetically connected to the connecting plate through the second connecting hole; The first sleeve is coaxially arranged with the second sleeve, and the distance between the first connecting hole and the axis of the first sleeve is greater than the distance between the second connecting hole and the axis of the second sleeve; An oil-proof cover plate is provided on the surface of the connecting plate facing the first panel, and the oil-proof cover plate covers the second connecting hole.

7. The oil leakage prevention gearbox according to claim 3, characterized in that: The outer end of the exhaust hole is connected to a waterproof column, the exhaust hole passes through the waterproof column, and the waterproof column is integrally formed with the first shell.

8. The oil leakage prevention gearbox according to claim 3, characterized in that: The first panel is provided with a bearing hole, a bearing sleeve is fixedly sleeved in the bearing hole, a bearing is sleeved in the bearing sleeve, and the power output shaft is fixedly connected to the bearing; The bearing sleeve is sealed and connected to the bearing hole. A sealing ring is arranged at the outer end of the bearing sleeve. The sealing ring is sleeved on the power output shaft, and a sealing retaining spring is arranged on the side of the sealing ring away from the bearing sleeve.

9. The oil leakage prevention gearbox according to claim 3, characterized in that: The outer surface of the first panel is provided with reinforcing ribs, and the reinforcing ribs are provided with drainage gaps.

10. An ice making machine, characterized in that: It comprises a water tank and the oil leakage prevention gear box according to any one of claims 1 to 9, wherein the oil leakage prevention gear box is installed below the water tank, and the power output shaft on the oil leakage prevention gear box is arranged vertically upward.

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