Planetary differential reduction gearbox of ship unloader

Abstract

The invention discloses a planet differential reduction gearbox of a ship unloader, and relates to the technical field of reduction gearbox design, the planet differential reduction gearbox comprises a reduction gearbox lower shell, a planet reduction unit, a lubricating oil adding and filtering unit and a sealing connection assembly, the reduction gearbox lower shell is connected with a reduction gearbox upper shell through the sealing connection assembly; the reduction gearbox lower shell and the reduction gearbox upper shell form a reduction gearbox body, a lower reduction mechanism fixing groove is formed in the reduction gearbox lower shell, an upper reduction mechanism fixing groove is formed in the reduction gearbox upper shell, and the lower reduction mechanism fixing groove and the upper reduction mechanism fixing groove form a reduction mechanism fixing groove. The gear lubricating device comprises an oil filtering and collecting box, a fixed cover plate, an oil inlet pipeline, a filter screen plate, a sealing fixed cover and a filter element, the internal structure is more convenient to disassemble and assemble, lubricating oil is more uniformly added, the gear is prevented from being damaged, the service life is not influenced, and the gear can be cooled and the device is prevented from being damaged when the gear lubricating device is used.

Description

Technical Field

[0001] The present invention relates to the technical field of reduction gearbox design, in particular to a planetary differential reduction gearbox for a ship unloader. Background Art

[0002] A reducer is an independent component consisting of a gear transmission, worm transmission, or gear-worm transmission enclosed in a rigid housing. It is commonly used as a reduction transmission device between the prime mover and the working machine. It matches speed and transmits torque between the prime mover and the working machine or actuator. It is widely used in modern machinery. Reducers are generally used in low-speed, high-torque transmission equipment. The power of an electric motor, internal combustion engine, or other high-speed operation is reduced by meshing a small gear on the input shaft of the reducer with a large gear on the output shaft. Ordinary reducers also have several pairs of gears based on the same principle to achieve the desired reduction effect. The ratio of the number of teeth on the large and small gears is the transmission ratio.

[0003] Planetary reducers are a widely used industrial product that can reduce motor speed while increasing output torque. They are used as supporting components in industries such as lifting, excavation, transportation, and construction. They consist of an internal gear ring (A) tightly bonded to the gearbox housing. A sun gear (B) driven by an external power source sits at the center of the ring gear. Between the two sits a planetary gear set (C) composed of three equally spaced gears mounted on a tray. These planetary gears float between the output shaft, internal gear ring, and sun gear. When the input power drives the sun gear, the planetary gears rotate and revolve around the center, following the trajectory of the internal gear ring. This rotation of the planetary gears drives the output shaft connected to the tray, thereby achieving a reduction in speed.

[0004] The existing planetary differential reduction gearbox of the ship unloader has an internal structure that is inconvenient to disassemble and assemble, and uneven addition of lubricating oil, which easily causes gear damage and shortens the service life. During use, the gears cannot be cooled, which easily causes damage to the device. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the existing defects and provide a planetary differential reduction gearbox for a ship unloader. The internal structure is more convenient to disassemble and assemble, the lubricating oil is added more evenly, which prevents gear damage and does not affect the service life. When in use, the gears can be cooled to prevent damage to the device, which can effectively solve the problems in the background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: a planetary differential reduction gearbox for a ship unloader, comprising a reduction gearbox lower shell, a planetary reduction unit, a lubricating oil adding and filtering unit, and a sealing connection assembly;

[0007] The lower shell of the reduction gearbox is connected to the upper shell of the reduction gearbox through a sealing connection component. The lower shell of the reduction gearbox and the upper shell of the reduction gearbox constitute the reduction gearbox body. The lower shell of the reduction gearbox is provided with a lower reduction mechanism fixing groove. The upper shell of the reduction gearbox is provided with an upper reduction mechanism fixing groove. The lower reduction mechanism fixing groove and the upper reduction mechanism fixing groove constitute a reduction mechanism fixing groove. A planetary reduction unit is provided in the reduction mechanism fixing groove.

[0008] Lubricating oil adding and filtering unit: comprises an oil filter collecting box, a fixed cover plate, an oil inlet pipe, a filter mesh plate, a sealing fixed cover and a filter element. An oil inlet hole is provided at the left side of the upper shell of the reduction gear box, and the oil inlet hole extends into the fixed groove of the upper reduction mechanism. A clamping groove is provided on the upper side of the upper shell of the reduction gear box, and an oil filter collecting box is fixedly clamped in the clamping groove. A rectangular hole is provided on the upper side of the oil filter collecting box, and a fixed cover plate is provided in the rectangular hole. A filter element is provided on the lower side of the fixed cover plate, and the filter element is provided in the oil filter collecting box. An oil inlet pipe is provided on the fixed cover plate at the right side of the filter element, a filter mesh plate is provided in the oil inlet pipe, and a sealing fixed cover is provided on the oil inlet pipe.

[0009] The lower shell of the reduction gearbox and the upper shell of the reduction gearbox are assembled together for use, the sealing connection assembly is used for connection and sealing, the planetary reduction unit is used for reduction and adjustment, the oil filter collection box is used to collect lubricating oil, the fixed cover is used for fixed sealing, which is convenient for internal replacement, the oil inlet pipe is used to allow external lubricating oil to flow into the device for addition, the filter plate is used for filtering to prevent large impurities from flowing into the device, the sealing fixed cover is used to seal when not adding to prevent dust from flowing into the device, the filter element is used to filter the lubricating oil, adsorb metal, and prevent damage to the device.

[0010] Furthermore, the lubricating oil adding and filtering unit also includes a power pump. A rectangular groove is opened on the upper shell of the gearbox at a position on the left side of the oil filter collecting box. A power pump is arranged in the rectangular groove. The oil inlet hole on the power pump is fixedly clamped with one end of the pipe, and the other end of the pipe extends to the clamping groove and extends into the oil filter collecting box. The oil outlet on the power pump is connected to one end of pipe one, and the other end of pipe one passes through the rectangular groove and extends into the oil inlet hole. The input end of the power pump is electrically connected to the output end of the external power supply through an external control switch group.

[0011] The power pump is used to provide power for the circulation of lubricating oil, making it easier to add and use and improving efficiency.

[0012] Furthermore, the lubricating oil adding and filtering unit also includes an oil level measuring sensor, a backflow plate and a connecting circular pipe. Two horizontal rectangular fixed grooves are provided in the lower reduction mechanism fixed groove in the lower shell of the reduction gearbox, and an oil level measuring sensor is respectively provided in the two rectangular fixed grooves. A cooling chamber is provided on the lower shell of the reduction gearbox at a position around the lower reduction mechanism fixed groove, and a plurality of backflow plates with equal intervals are provided in the cooling chamber. A circular hole is respectively provided on the front and rear sides of the lower shell of the reduction gearbox, and the two circular holes extend into the corresponding cooling chamber respectively. The two circular holes are respectively fixedly connected with the connecting circular pipes, and the input end of the oil level measuring sensor is electrically connected to the output end of the external power supply through an external control switch group.

[0013] The oil level measuring sensor is used to detect the amount of oil added, which is convenient for splash lubrication. The backflow plate is used for backflow, which is convenient for cooling. The connecting round pipe is used to connect to the condensing device, which is convenient for water circulation to be used for cooling and to increase the service life of the device.

[0014] Furthermore, the lubricating oil adding and filtering unit also includes an oil drain sealing plug. An oil drain hole is opened on the lower side of the reducer lower shell, and the oil drain hole extends into the fixing groove of the lower reduction mechanism. The oil drain hole is clamped with the oil drain sealing plug through a sealing ring.

[0015] The oil drain sealing plug is used to drain the lubricating oil, making it easy to add it back and recycle it.

[0016] Furthermore, the planetary reduction unit includes an inner gear ring, a transmission gear, a fixed cylinder, a planet carrier and a power gear. An inner gear ring is fixedly clamped in the reduction mechanism fixing groove in the reduction box lower shell and the reduction box upper shell. A power gear is provided at the center of the inner gear ring. Three annular array transmission gears are provided between the inner gear ring and the power gear. The power gear is meshed with the three transmission gears, and the three transmission gears are meshed with the inner gear ring. A fixed cylinder is fixedly sleeved on each transmission gear, and a planet carrier is provided on the three fixed cylinders. The planet carrier is rotatably connected to the corresponding fixed cylinder through a bearing.

[0017] The inner ring gear is used to make the transmission gear rotate more stably, the transmission gear is used to adjust the deceleration, the fixed cylinder is used to fix the planetary carrier, and the planetary carrier is used to fix the three planetary carriers to make the planetary carrier rotate more stably. The power gear is used to provide power for easy transmission. The inner ring gear, transmission gear, planetary carrier and power gear constitute the planetary carrier structure. The inner ring gear, transmission gear and power gear adopt involute tooth profile to increase meshing and facilitate deceleration.

[0018] Furthermore, the planetary reduction unit also includes an output shaft and an input shaft. An input shaft is fixedly connected to the power gear and passes through the left side of the lower shell of the reduction box. An output shaft is fixedly connected to the planetary carrier and passes through the right side of the lower shell of the reduction box.

[0019] The output shaft is used to connect to the external output workpiece, and the input shaft is used to connect to the input power device for external connection.

[0020] Furthermore, the planetary reduction unit also includes a stabilizing bearing, and a stabilizing bearing is fixedly sleeved on the output shaft and the input shaft respectively. The output shaft and the input shaft are rotatably connected on the corresponding reduction box lower shell through the stabilizing bearings.

[0021] The stabilizing bearing is used to make the rotation of the output shaft and the input shaft more stable and convenient to use.

[0022] Furthermore, the planetary reduction unit also includes a sealing ring. A sealing ring is respectively sleeved on the output shaft and the input shaft at positions on the left and right sides of the corresponding stabilizing bearing, and each sealing ring is respectively arranged in the lower shell of the reduction box.

[0023] The sealing ring is used for sealing, and the sealing ring adopts a labyrinth sealing structure to enhance the sealing effect.

[0024] Furthermore, the sealing connection assembly includes fixing bolts and screw holes. A screw hole is respectively provided at the four corners on the upper side of the gearbox lower shell, and a notch is respectively provided at the four corners on the upper side of the gearbox upper shell. A bolt is respectively provided in each notch. Each bolt passes through the gearbox upper shell and is threaded in the corresponding screw hole. The gearbox upper shell is connected to the corresponding gearbox lower shell by bolts.

[0025] The device is assembled by connecting the fixing bolts and screw holes, which makes it easy to disassemble and assemble for internal inspection and use.

[0026] Furthermore, the sealing connection assembly also includes a sealing groove and a sealing strip. Sealing grooves are respectively provided on the four sides of the upper side of the lower shell of the gearbox and the edge of the fixed groove of the lower reduction mechanism. A sealing strip is provided on the lower side of the upper shell of the gearbox at the position corresponding to the sealing groove, and the sealing strip is clamped with the corresponding sealing groove.

[0027] The sealing groove and the sealing strip are snapped together to seal and prevent the leakage of lubricating oil, and also prevent the entry of dust, making the device more stable to use.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. The planetary differential reduction gearbox of the ship unloader has the following advantages: a lubricating oil adding and filtering unit is provided, the lubricating oil is collected through the oil filter collecting box, the fixed cover is used for fixed sealing, and the internal part is convenient for replacement, the oil inlet pipe is used to allow external lubricating oil to flow into the device for adding, the filter screen is used for filtering to prevent large impurities from flowing into the device, the sealing fixed cover is used for sealing when not adding to prevent dust from flowing into the device, the filter element is used for filtering the lubricating oil, the power pump is used to provide power for the circulation of the lubricating oil, the oil level measuring sensor is used to detect the amount of oil added, and it is convenient for splash lubrication, the backflow plate is used for backflow, and it is convenient for cooling, the connecting round pipe is used to connect to the condensing device, and it is convenient for water circulation, and the oil drain sealing plug is used to discharge the lubricating oil, and it is convenient for re-adding;

[0030] 2. This planetary differential reduction gearbox for ship unloaders has the following advantages: a planetary reduction unit is provided, an internal gear ring is used to ensure more stable rotation of the transmission gear, the transmission gear is used to adjust the reduction, a fixed cylinder is used to fix the planetary carrier, and the planetary carrier is used to fix three planetary carriers to ensure more stable rotation of the planetary carrier, a power gear is used to provide power for convenient transmission, and the internal gear ring, transmission gear, planetary carrier and power gear constitute the planetary carrier structure, the output shaft is used to connect to the external output workpiece, the input shaft is used to connect to the input power device, the stabilizing bearing is used to ensure more stable rotation of the output and input shafts, and the sealing ring is used for sealing. The sealing ring adopts a labyrinth-type sealing structure for reduction of speed;

[0031] 3. The planetary differential reduction gearbox of this ship unloader has the following advantages: the internal structure is more convenient to disassemble and assemble, the lubricating oil is added more evenly, which prevents gear damage and does not affect the service life. When in use, the gears can be cooled to prevent damage to the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the front structure of the present invention;

[0033] Figure 2 This is a schematic diagram of the front structure of the planetary reduction unit of the present invention;

[0034] Figure 3 This is a partial cross-sectional structural diagram of the oil filter collection box of the present invention;

[0035] Figure 4 For the present invention Figure 3 A in the middle is a schematic diagram of a partially enlarged structure;

[0036] Figure 5 This is a schematic diagram of a partial cross-sectional structure of the lower housing of the reduction gearbox of the present invention;

[0037] Figure 6This is a schematic diagram of the back structure of the lower housing of the reduction gearbox of the present invention;

[0038] Figure 7 This is a schematic diagram of the side structure of the lower housing of the reduction gearbox of the present invention;

[0039] Figure 8 This is a schematic diagram of the upper shell structure of the reduction gearbox of the present invention.

[0040] In the figure: 1 reduction gear lower housing, 2 reduction gear upper housing, 3 planetary reduction unit, 31 internal gear ring, 32 transmission gear, 33 fixed cylinder, 34 planetary carrier, 35 output shaft, 36 power gear, 37 input shaft, 38 sealing ring, 39 stabilizing bearing, 4 lubricating oil adding and filtering unit, 41 oil filter collecting box, 42 fixed cover plate, 43 oil inlet pipe, 44 filter screen plate, 45 sealing fixed cover, 46 filter element, 47 power pump, 48 oil level measuring sensor, 49 backflow plate, 410 connecting round pipe, 411 oil drain sealing plug, 5 sealing connection assembly, 51 fixing bolt, 52 screw hole, 53 sealing groove, 54 sealing strip. DETAILED DESCRIPTION

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0042] See also Figure 1-8 , this embodiment provides a technical solution: a planetary differential reduction gearbox for a ship unloader, comprising a reduction gearbox lower shell 1, a planetary reduction unit 3, a lubricating oil adding and filtering unit 4 and a sealing connection assembly 5;

[0043] The gearbox lower shell 1 is connected to the gearbox upper shell 2 through a sealing connection component 5. The gearbox lower shell 1 and the gearbox upper shell 2 constitute the gearbox main body. The gearbox lower shell 1 is provided with a lower reduction mechanism fixing groove, and the gearbox upper shell 2 is provided with an upper reduction mechanism fixing groove. The lower reduction mechanism fixing groove and the upper reduction mechanism fixing groove constitute a reduction mechanism fixing groove, and the reduction mechanism fixing groove is provided with a planetary reduction unit 3;

[0044] The lubricating oil adding and filtering unit 4 comprises an oil filter collecting box 41, a fixed cover plate 42, an oil inlet pipe 43, a filter screen plate 44, a sealing fixed cover 45 and a filter element 46. An oil inlet hole is provided on the left side of the upper shell 2 of the reduction gear box, and the oil inlet hole extends into the fixed groove of the upper reduction mechanism. A clamping groove is provided on the upper side of the upper shell 2 of the reduction gear box, and an oil filter collecting box 41 is fixedly clamped in the clamping groove. A rectangular hole is provided on the upper side of the oil filter collecting box 41, and a fixed cover plate 42 is provided in the rectangular hole. A filter element 46 is provided on the lower side of the fixed cover plate 42, and the filter element 46 is provided in the oil filter collecting box 41. An oil inlet pipe 43 is provided on the fixed cover plate 42 at the right side of the filter element 46, a filter screen plate 44 is provided in the oil inlet pipe 43, and a sealing fixed cover 45 is provided on the oil inlet pipe 43.

[0045] The gearbox lower shell 1 and the gearbox upper shell 2 are matched for assembly and use, the sealing connection assembly 5 is used for connection and sealing, the planetary reduction unit 3 is used for reduction and adjustment, the oil filter collection box 41 is used to collect lubricating oil, the fixed cover 42 is used for fixed sealing, which is convenient for internal replacement, the oil inlet pipe 43 is used to allow external lubricating oil to flow into the device for addition, the filter plate 44 is used for filtering to prevent large impurities from flowing into the device, the sealing fixed cover 45 is used to seal when not adding to prevent dust from flowing into the device, and the filter element 46 is used to filter the lubricating oil, adsorb metal, and prevent damage to the device.

[0046] The lubricating oil adding and filtering unit 4 also includes a power pump 47. A rectangular groove is opened on the upper shell 2 of the gearbox at the left side of the oil filter collecting box 41. A power pump 47 is arranged in the rectangular groove. The oil inlet hole on the power pump 47 is fixedly connected with one end of the pipe, and the other end of the pipe extends to the connecting groove and extends into the oil filter collecting box 41. The oil outlet on the power pump 47 is connected with one end of pipe one, and the other end of pipe one passes through the rectangular groove and extends into the oil inlet hole. The input end of the power pump 47 is electrically connected to the output end of the external power supply through an external control switch group.

[0047] The power pump 47 is used to provide power for the circulation of lubricating oil, making it convenient to add and use the lubricating oil and improving efficiency.

[0048] The lubricating oil adding and filtering unit 4 also includes an oil level measuring sensor 48, a backflow plate 49 and a connecting circular pipe 410. Two horizontal rectangular fixed grooves are provided in the lower reduction mechanism fixed groove in the reducer lower shell 1. An oil level measuring sensor 48 is respectively provided in the two rectangular fixed grooves. A cooling chamber is provided on the reducer lower shell 1 around the lower reduction mechanism fixed groove. A plurality of backflow plates 49 with equal spacing are provided in the cooling chamber. A circular hole is respectively provided on the front and rear sides of the reducer lower shell 1. The two circular holes extend into the corresponding cooling chamber respectively. The two circular holes are respectively fixedly connected with the connecting circular pipe 410. The input end of the oil level measuring sensor 48 is electrically connected to the output end of the external power supply through an external control switch group.

[0049] The oil level measuring sensor 48 is used to detect the amount of oil added, which is convenient for splash lubrication. The backflow plate 49 is used for backflow, which is convenient for cooling. The connecting round pipe 410 is used to connect to the condensing device, which is convenient for water circulation to be used for cooling and to increase the service life of the device.

[0050] The lubricating oil adding and filtering unit 4 also includes an oil drain sealing plug 411. An oil drain hole is opened on the lower side of the reduction gearbox lower shell 1, and the oil drain hole extends into the fixing groove of the lower reduction mechanism. The oil drain hole is clamped with the oil drain sealing plug 411 through a sealing ring.

[0051] The oil drain sealing plug 411 is used to drain the lubricating oil, making it convenient for refilling and recycling.

[0052] The planetary reduction unit 3 includes an inner ring gear 31, a transmission gear 32, a fixed cylinder 33, a planet carrier 34 and a power gear 36. An inner ring gear 31 is fixedly clamped in the reduction mechanism fixing groove in the reduction box lower shell 1 and the reduction box upper shell 2. A power gear 36 is provided at the center of the inner ring gear 31. Three annular arrays of transmission gears 32 are provided between the inner ring gear 31 and the power gear 36. The power gear 36 is meshed with the three transmission gears 32, and the three transmission gears 32 are meshed with the inner ring gear 31. A fixed cylinder 33 is fixedly sleeved on each transmission gear 32, and a planet carrier 34 is provided on the three fixed cylinders 33. The planet carrier 34 is rotatably connected to the corresponding fixed cylinder 33 through a bearing.

[0053] The inner gear ring 31 is used to make the transmission gear 32 rotate more stably, the transmission gear 32 is used for adjusting the deceleration, the fixed cylinder 33 is used to fix the planetary carrier 34, and the planetary carrier 34 is used to fix the three planetary carriers 34 to make the rotation of the planetary carrier 34 more stable. The power gear 36 is used to provide power for convenient transmission. The inner gear ring 31, the transmission gear 32, the planetary carrier 34 and the power gear 36 constitute the planetary carrier structure. The inner gear ring 31, the transmission gear 32 and the power gear 36 adopt an involute tooth profile to increase the meshing performance and facilitate deceleration.

[0054] The planetary reduction unit 3 also includes an output shaft 35 and an input shaft 37. An input shaft 37 is fixedly connected to the power gear 36, and the input shaft 37 passes through the left side of the reduction gear lower shell 1. An output shaft 35 is fixedly connected to the planetary carrier 34, and the output shaft 35 passes through the right side of the reduction gear lower shell 1.

[0055] The output shaft 35 is used to connect to an external output workpiece, and the input shaft 37 is used to connect to an input power device for external connection.

[0056] The planetary reduction unit 3 further includes a stabilizing bearing 39 , and a stabilizing bearing 39 is fixedly sleeved on the output shaft 35 and the input shaft 37 , respectively. The output shaft 35 and the input shaft 37 are rotatably connected to the corresponding reduction box lower shell 1 through the stabilizing bearing 39 .

[0057] The stabilizing bearing 39 is used to make the rotation of the output shaft 35 and the input shaft 37 more stable and convenient to use.

[0058] The planetary reduction unit 3 further includes a sealing ring 38 . A sealing ring 38 is respectively sleeved on the output shaft 35 and the input shaft 37 at positions on the left and right sides of the corresponding stabilizing bearing 39 . Each sealing ring 38 is respectively arranged in the reduction box lower shell 1 .

[0059] The sealing ring 38 is used for sealing, and the sealing ring 38 adopts a labyrinth sealing structure to enhance the sealing effect.

[0060] The sealing connection assembly 5 includes a fixing bolt 51 and a screw hole 52. A screw hole 52 is respectively provided at the four corners on the upper side of the gearbox lower shell 1, and a notch is respectively provided at the four corners on the upper side of the gearbox upper shell 2. A bolt 51 is respectively provided in each notch. Each bolt 51 passes through the gearbox upper shell 2 and is threaded in the corresponding screw hole 52. The gearbox upper shell 2 is connected to the corresponding gearbox lower shell 1 through the bolt 51.

[0061] The fixing bolts 51 and the screw holes 52 are connected to assemble the device, which is convenient for disassembly and assembly to inspect and use the interior.

[0062] The sealing connection assembly 5 also includes a sealing groove 53 and a sealing strip 54. Sealing grooves 53 are respectively provided on the four sides of the upper side of the gearbox lower shell 1 and the edge of the lower reduction mechanism fixed groove. A sealing strip 54 is provided on the lower side of the gearbox upper shell 2 at a position corresponding to the sealing groove 53, and the sealing strip 54 is snap-fitted into the corresponding sealing groove 53.

[0063] The sealing groove 53 and the sealing strip 54 are snapped together to seal and prevent the leakage of lubricating oil, and also prevent dust from entering, so as to make the device more stable to use.

[0064] The working principle of the planetary differential reduction gearbox for a ship unloader provided by the present invention is as follows: first, the inner gear ring 31 is used to make the transmission gear 32 rotate more stably, the transmission gear 32 is used to adjust the reduction, the fixed cylinder 33 is used to fix the planetary carrier 34, and the planetary carrier 34 is used to fix the three planetary carriers 34 to make the planetary carrier 34 rotate more stably, and the power gear 36 is used to provide power for convenient transmission. The inner gear ring 31, the transmission gear 32, the planetary carrier 34 and the power gear 36 constitute a planetary carrier structure, the output shaft 35 is used to connect to the external output workpiece, the input shaft 37 is used to connect to the input power device, the stabilizing bearing 39 is used to make the output shaft 35 and the input shaft 37 rotate more stably, the sealing ring 38 is used for sealing, and the sealing ring 38 adopts a labyrinth sealing structure to install the reduction device, and then the fixed bolt 51 and the screw hole 52 are connected to assemble the device, the sealing groove 53 and the sealing The strip 54 is snapped in place to seal and prevent the lubricating oil from leaking for assembly. When in use, the oil filter collection box 41 is used to collect the lubricating oil, the fixed cover 42 is used for fixed sealing, which is convenient for internal replacement, the oil inlet pipe 43 is used to allow external lubricating oil to flow into the device for addition, the filter plate 44 is used for filtering to prevent large impurities from flowing into the device, the sealing fixed cover 45 is used to seal when not adding to prevent dust from flowing into the device, the filter element 46 is used to filter the lubricating oil, the power pump 47 is used to provide power for the circulation of the lubricating oil, the oil level measuring sensor 48 is used to detect the amount of oil added, which is convenient for splash lubrication, the backflow plate 49 is used for backflow, which is convenient for cooling, the connecting round pipe 410 is used to connect to the condensing device, which is convenient for water circulation, and the oil drain sealing plug 411 is used to discharge the lubricating oil for lubrication.

[0065] It is worth noting that the core chip of the external control switch group disclosed in the above embodiment is a PLC microcontroller, and the external control switch group controls the oil level measurement sensor 48 and the power pump 47 using methods commonly used in the prior art.

[0066] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A planetary differential reduction gearbox for a ship unloader, characterized by: It comprises a reduction gearbox lower shell (1), a planetary reduction unit (3), a lubricating oil adding and filtering unit (4) and a sealing connection assembly (5); The reduction box lower shell (1) is connected to the reduction box upper shell (2) via a sealing connection assembly (5). The reduction box lower shell (1) and the reduction box upper shell (2) constitute a reduction box body. The reduction box lower shell (1) is provided with a lower reduction mechanism fixing groove. The reduction box upper shell (2) is provided with an upper reduction mechanism fixing groove. The lower reduction mechanism fixing groove and the upper reduction mechanism fixing groove constitute a reduction mechanism fixing groove. A planetary reduction unit (3) is provided in the reduction mechanism fixing groove. The lubricating oil adding and filtering unit (4) comprises an oil filtering and collecting box (41), a fixed cover plate (42), an oil inlet pipe (43), a filter screen plate (44), a sealing fixed cover (45) and a filter element (46). An oil inlet hole is provided on the left side of the upper shell (2) of the reduction gear box, and the oil inlet hole extends into the fixed groove of the upper reduction gear mechanism. A clamping groove is provided on the upper side of the upper shell (2) of the reduction gear box, and an oil filtering and collecting box (41) is fixedly clamped in the clamping groove. The oil filtering and collecting box (41) is provided with a plurality of oil filter elements. ) is provided with a rectangular hole on the side, a fixed cover plate (42) is provided in the rectangular hole, a filter element (46) is provided on the lower side of the fixed cover plate (42), the filter element (46) is provided in the oil filter collection box (41), an oil inlet pipe (43) is provided on the fixed cover plate (42) at the right side of the filter element (46), a filter screen plate (44) is provided in the oil inlet pipe (43), and a sealing fixed cover (45) is provided on the oil inlet pipe (43).

2. The planetary differential reduction gearbox for a ship unloader according to claim 1, characterized in that: The lubricating oil adding and filtering unit (4) further comprises a power pump (47). A rectangular groove is provided on the upper shell (2) of the reduction gearbox at a position on the left side of the oil filter collecting box (41). A power pump (47) is provided in the rectangular groove. The oil inlet on the power pump (47) is fixedly connected to one end of a pipe, and the other end of the pipe extends into the connecting groove and into the oil filter collecting box (41). The oil outlet on the power pump (47) is connected to one end of pipe one, and the other end of pipe one passes through the rectangular groove and extends into the oil inlet. The input end of the power pump (47) is electrically connected to the output end of an external power supply through an external control switch group.

3. The planetary differential reduction gearbox for a ship unloader according to claim 1, characterized in that: The lubricating oil adding and filtering unit (4) further comprises an oil level measuring sensor (48), a backflow plate (49) and a connecting circular pipe (410). Two horizontal rectangular fixing grooves are provided in the lower reduction mechanism fixing groove of the reduction gearbox lower shell (1). An oil level measuring sensor (48) is provided in each of the two rectangular fixing grooves. A cooling cavity is provided on the reduction gearbox lower shell (1) at a position around the lower reduction mechanism fixing groove. A plurality of backflow plates (49) are provided in the cooling cavity at equal intervals. A circular hole is provided on the front and rear sides of the reduction gearbox lower shell (1). The two circular holes extend into the corresponding cooling cavity respectively. The two circular holes are fixedly connected to the connecting circular pipe (410) respectively. The input end of the oil level measuring sensor (48) is electrically connected to the output end of the external power supply through an external control switch group.

4. The planetary differential reduction gearbox for a ship unloader according to claim 1, characterized in that: The lubricating oil adding and filtering unit (4) further comprises an oil drain sealing plug (411), an oil drain hole is provided on the lower side of the reduction gearbox lower shell (1), the oil drain hole extends into the fixing groove of the lower reduction gear mechanism, and the oil drain sealing plug (411) is clamped with the oil drain sealing plug (411) via a sealing ring in the oil drain hole.

5. The planetary differential reduction gearbox for a ship unloader according to claim 1, characterized in that: The planetary reduction unit (3) comprises an inner gear ring (31), a transmission gear (32), a fixed cylinder (33), a planet carrier (34) and a power gear (36). An inner gear ring (31) is fixedly connected in a reduction mechanism fixing groove in the reduction box lower shell (1) and the reduction box upper shell (2). A power gear (36) is provided at the center of the inner gear ring (31). Three transmission gears (32) in an annular array are provided between the inner gear ring (31) and the power gear (36). The power gear (36) is meshed with the three transmission gears (32). The three transmission gears (32) are meshed with the inner gear ring (31). A fixed cylinder (33) is fixedly connected to each transmission gear (32). A planet carrier (34) is provided on the three fixed cylinders (33). The planet carrier (34) is rotatably connected to the corresponding fixed cylinder (33) through a bearing.

6. The planetary differential reduction gearbox for a ship unloader according to claim 5, characterized in that: The planetary reduction unit (3) further comprises an output shaft (35) and an input shaft (37); an input shaft (37) is fixedly sleeved on the power gear (36); the input shaft (37) passes through the left side of the reduction box lower shell (1); an output shaft (35) is fixedly sleeved on the planetary carrier (34); the output shaft (35) passes through the right side of the reduction box lower shell (1).

7. The planetary differential reduction gearbox for a ship unloader according to claim 6, characterized in that: The planetary reduction unit (3) further comprises a stabilizing bearing (39), and a stabilizing bearing (39) is fixedly sleeved on each of the output shaft (35) and the input shaft (37), and the output shaft (35) and the input shaft (37) are rotatably connected on the corresponding reduction box lower shell (1) through the stabilizing bearing (39).

8. The planetary differential reduction gearbox for a ship unloader according to claim 6, characterized in that: The planetary reduction unit (3) further comprises a sealing ring (38), and a sealing ring (38) is respectively sleeved on the output shaft (35) and the input shaft (37) at positions on the left and right sides of the corresponding stabilizing bearing (39), and each sealing ring (38) is respectively arranged in the reduction box lower shell (1).

9. The planetary differential reduction gearbox for a ship unloader according to claim 1, characterized in that: The sealing connection assembly (5) includes fixing bolts (51) and screw holes (52). The four corners on the upper side of the reduction gearbox lower shell (1) are respectively provided with a screw hole (52). The four corners on the upper side of the reduction gearbox upper shell (2) are respectively provided with a notch. A bolt (51) is respectively provided in each notch. Each bolt (51) passes through the reduction gearbox upper shell (2) and is threadedly connected in the corresponding screw hole (52). The reduction gearbox upper shell (2) is connected to the corresponding reduction gearbox lower shell (1) through the bolts (51).

10. The planetary differential reduction gearbox for a ship unloader according to claim 9, characterized in that: The sealing connection assembly (5) further comprises a sealing groove (53) and a sealing strip (54); the sealing grooves (53) are respectively provided on the four upper sides of the reduction gearbox lower shell (1) and the edge of the lower reduction mechanism fixed groove; the sealing strip (54) is provided on the lower side of the reduction gearbox upper shell (2) at a position corresponding to the sealing groove (53); the sealing strip (54) is snap-connected with the corresponding sealing groove (53).

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