A transmission gear box having a lubricating oil circuit

Abstract

The application discloses a variable speed gear box with a lubricating oil circuit, and relates to the field of variable speed gear boxes. A bottom plate is coaxially fixedly connected to a first gear side wall. The bottom plate is fixedly connected with a cover plate in a direction away from the first gear. The cover plate and the bottom plate can accommodate lubricating oil, and a dispersing assembly is arranged at the edge of the cover plate and the bottom plate to disperse the lubricating oil on the tooth surface of the first gear. A pipeline is fixedly connected to the third shell to supply oil between the cover plate and the bottom plate. An oil feeding assembly is arranged below the first gear to pump the lubricating oil to the top surface of the third gear. Another dispersing assembly is fixedly connected to the top of the third gear to disperse the lubricating oil. A first shell is further provided with a liquid discharge port fixedly connected to the bottom end of the first shell to discharge the lubricating oil. The application can cool the gear and achieve good lubricating effect, effectively avoid the rupture of the oil film on the surface of the gear, and further achieve good lubricating effect on the gear.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of variable speed gearboxes, in particular to a variable speed gearbox with a lubricating oil circuit. BACKGROUND

[0002] A variable speed gearbox is a mechanical device that adjusts the output speed and torque by changing the gear combination. It achieves the speed ratio change between the input shaft and the output shaft through the meshing of gears of different sizes. By flexibly adjusting the speed and torque, it is widely used in transportation, industry and new energy fields.

[0003] Splash lubrication is one of the most common lubrication methods in variable speed gearboxes. Its principle is to immerse the gears in lubricating oil, and to lubricate the gears and bearings through the oil splashed by the rotating gears.

[0004] The oil supply of splash lubrication is difficult to accurately control, and the lubrication effect is affected by many factors such as gear speed, oil pool oil amount, oil viscosity, etc. For example, when the gear speed is too high, it may cause too much splash of lubricating oil and form a large amount of foam, causing the oil film on the gear to break, thereby reducing the lubrication effect. In summary, the existing variable speed gearbox is not easy to lubricate the gears sufficiently. SUMMARY

[0005] Therefore, the purpose of the present application is to provide a variable speed gearbox with a lubricating oil circuit to solve the technical problem that the existing variable speed gearbox is not easy to sufficiently lubricate the gears.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solution: a variable speed gearbox with a lubricating oil circuit, comprising a first gear vertically arranged, a bottom plate coaxially fixedly connected to the side wall of the first gear, a cover plate fixedly connected to the bottom plate away from the first gear, the cover plate and the bottom plate being capable of containing lubricating oil, and a scattering assembly being provided at the edge for scattering the lubricating oil on the gear surface of the first gear, further comprising a third housing, the third housing being fixedly connected with a pipeline for supplying oil between the cover plate and the bottom plate, further comprising a third gear horizontally arranged, a oil feeding assembly being provided below the first gear for pumping lubricating oil to the top surface of the third gear, another scattering assembly being fixedly connected to the top of the third gear for scattering lubricating oil, further comprising a first housing, the bottom end of the first housing being fixedly connected with a liquid discharge port for discharging lubricating oil.

[0007] By adopting the above technical solution, the lubricating oil sprayed from the liquid outlet is evenly scattered on the surface of the adjacent gear by the blocking piece, which not only cools the gear but also has good lubrication effect, effectively avoiding the rupture of the oil film on the gear surface, thereby achieving good lubrication effect on the gear.

[0008] The first shell is fixedly connected with a second shell at the top end, one side of the second shell is fixedly connected with a third shell, two first gears and two second gears are rotationally connected between the third shell and the second shell, the two first gears are coaxially arranged, the two second gears are coaxially arranged, the distance between the two first gears is greater than the tooth width of the second gear, and the second gear is located obliquely above the first gear.

[0009] Preferably, the gear box realizes variable speed transmission by switching the second gear to mesh with different first gears.

[0010] The two first gears are oppositely provided with a bottom plate, the bottom plate is fixedly connected with a cover plate, the center of the cover plate is provided with a liquid guide ring with a diameter greater than the rotating shaft of the first gear, the edge of the bottom plate is provided with a sealing ring at intervals, a gap is formed between adjacent sealing rings, and a liquid outlet is formed at the position corresponding to the gap on the edge of the cover plate.

[0011] Preferably, the lubricating oil between the bottom plate and the cover plate is sprayed out through the liquid outlet due to centrifugal force when the first gear rotates.

[0012] The outer wall of the cover plate is rotationally connected with a centrifugal rod at intervals in a ring shape, the axis of the rotating shaft of the centrifugal rod is parallel to the axis of the rotating shaft of the first gear, one end of the centrifugal rod away from the rotating shaft thereof is rotationally connected with a rotating rod, the axis of the rotating shaft of the rotating rod is orthogonal to the axis of the corresponding rotating shaft of the centrifugal rod, a torsional spring is arranged at the rotating shaft of the rotating rod, the torsional spring is not compressed when the rotating rod and the centrifugal rod are in close contact, the rotating rod can rotate to be in the same straight line with the centrifugal rod due to its own centrifugal force when the first gear rotates, a baffle is fixedly connected to one end of the rotating rod away from the rotating shaft thereof, the baffle is used to spread the lubricating oil sprayed out of the liquid outlet to the surface of the first gear, and the diameter of the position where the baffle is located is greater than the diameter of the first gear when the rotating rod and the centrifugal rod are in the same straight line.

[0013] Preferably, the lubricating oil sprayed out of the liquid outlet is evenly spread to the tooth surface of the first gear after being blocked by the baffle.

[0014] The side wall of the third shell is fixedly connected with a mounting plate, the mounting plate is respectively connected with a first liquid conveying pipe and a second liquid conveying pipe, and the first liquid conveying pipe and the second liquid conveying pipe lead to the liquid guide rings of the two cover plates.

[0015] Preferably, the lubricating oil is conveyed to the gears in the gear box that are in working state through the first liquid conveying pipe or the second liquid conveying pipe.

[0016] The first shell is fixedly connected with a heating cylinder for wrapping the first infusion tube and the second infusion tube, and the heating cylinder is provided with a heating assembly for heating the lubricating oil in the first infusion tube and the second infusion tube.

[0017] Preferably, the lubricating oil flowing into the gear box is heated by the heating cylinder during the cold start of the gear box, so that the flowability of the lubricating oil is improved, and the lubricating oil can better cover the gears that need to be lubricated.

[0018] The second shell is fixedly connected with a transfer pump, and the inlet and outlet of the transfer pump are respectively connected with a liquid suction pipe leading to the bottom end of the third shell and a liquid delivery pipe leading to the top surface of the third gear.

[0019] Preferably, the transfer pump is used to transfer the lubricating oil between the second shell and the third shell, so that the accumulation of the lubricating oil in the second shell and the third shell is avoided, and the rotation of the first gear is not affected.

[0020] The first gear shaft extends between the first shell and the second shell and is fixedly connected with a bevel gear, the third gear and the bevel gear are meshed with each other, the top surface of the third gear is fixedly connected with a containing disc, the edge of the containing disc is provided with an inclined downward chamfer, and a support rod is fixedly connected at the top end of the edge in a ring shape, the top end of the support rod is fixedly connected with a blocking ring, and the height of the top end of the containing disc is higher than the height of the top end of the third gear.

[0021] Preferably, the lubricating oil in the containing disc flows along the inclined chamfer to the conical surface of the bevel gear while overflowing, and another part of the lubricating oil is thrown out by centrifugal force, the blocking ring blocks this part of the lubricating oil thrown out, so that this part of the lubricating oil flows to the tooth surface of the third gear, thereby achieving good lubrication of the third gear.

[0022] The first shell is provided with a collection groove for containing lubricating oil below the position of the third gear, and the bottom end of the collection groove is communicated with a liquid discharge port extending out of the first shell.

[0023] Preferably, the lubricating oil flowing along the tooth surface of the third gear and being thrown into the inner wall of the first shell and the second shell flows downward to the collection groove under its own gravity, and is finally discharged through the liquid discharge port.

[0024] The outer wall of the second shell is fixedly connected with a temperature measuring probe inserted into the second shell.

[0025] Preferably, the temperature measuring probe is used to detect the temperature inside the gear box, so as to determine whether an external plate heat exchanger or other components need to be started.

[0026] In summary, the present application mainly has the following beneficial effects:

[0027] 1、The present application installs the oil conveying structure which is in close contact with the gear in the gear box, and the baffle for spreading lubricating oil is unfolded by the centrifugal force when the gear rotates, the lubricating oil is evenly distributed on the surface of the adjacent gear after being blocked by the baffle after being sprayed from the liquid outlet, which cools the gear and has good lubricating effect, effectively avoids the rupture of the oil film on the surface of the gear, and further realizes good lubricating effect of the gear.

[0028] 2、The present application uses different lubricating oil conveying pipelines to convey lubricating oil to the working gear, so that the lubricating oil of the gear box can accurately lubricate the gear that needs to be lubricated, effectively improving the accuracy of the lubricating oil for lubricating the gear in the gear box.

[0029] 3、The present application installs the pump body for transferring lubricating oil in the gear box, transfers the lubricating oil lubricated on the first gear and the second gear to the third gear, avoids the foam generated by the first gear stirring the lubricating oil in the shell when rotating, and the lubricating oil transferred to the third gear is evenly distributed to the tooth surface of the third gear by the centrifugal force generated by the rotation of the third gear and the cooperation of the baffle ring.

[0030] 4、The present application evenly distributes lubricating oil on the surface of the first gear and the third gear, circulates the lubricating oil to be thrown out to the inner wall of the shell under the premise of keeping the oil film from being broken, directly transmits part of the heat of the lubricating oil to the air through the heat conduction of the shell, effectively improves the self-cooling capacity of the variable speed gear, and reduces the starting frequency of the external plate radiator of the gear box. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is a perspective view of the present application;

[0032] Figure 2 It is another perspective view of the present application;

[0033] Figure 3 It is a perspective view of the present application; Figure 2 It is an enlarged view of A in the present application;

[0034] Figure 4 It is a perspective view of the internal structure of the second shell of the present application;

[0035] Figure 5 It is another perspective view of the internal structure of the second shell of the present application;

[0036] Figure 6 It is a perspective view of the internal structure of the second shell after the first gear and the second gear are removed in the present application;

[0037] Figure 7 is a first gear rotating state under the invention; Figure 6 is an enlarged view of B in the figure;

[0038] Figure 8 is an exploded view of a first gear rotating state under the invention;

[0039] Figure 9 is an exploded view of a first gear rotating state under the invention from another perspective;

[0040] Figure 10 is a front view of a third gear and a containing disc cross-section under the invention;

[0041] Figure 11 is a perspective view of a first gear non-rotating state under the invention.

[0042] Explanation of reference signs:

[0043] 1, first housing; 101, collection groove; 102, liquid discharge port; 2, second housing; 201, temperature measuring probe; 3, third housing; 301, mounting plate; 4, first gear; 5, second gear; 6, third gear; 7, warming cylinder; 8, first liquid delivery pipe; 9, second liquid delivery pipe; 10, first wire; 11, second wire; 12, transfer pump; 13, liquid suction pipe; 14, liquid delivery pipe; 15, bottom plate; 1501, sealing ring; 1502, notch; 16, cover plate; 1601, liquid guide ring; 1602, liquid blocking piece; 1603, liquid outlet; 17, centrifugal rod; 18, rotating rod; 19, blocking piece; 20, counterweight; 21, containing disc; 22, support rod; 23, blocking ring. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. The embodiments described below with reference to the drawings are exemplary and are used only for explaining the present application, and cannot be understood as a limitation of the present application.

[0045] The embodiments of the present application will be described below according to the overall structure of the present application.

[0046] First embodiment:

[0047] A variable speed gear box with lubricating oil circuit, please refer to Figures 1-11, including a vertically arranged first gear 4, specifically, in the embodiment, two groups of variable speed gear sets capable of being meshed with each other are arranged in the gear box, the side wall of the first gear 4 is coaxially fixedly connected with a bottom plate 15, the bottom plate 15 is fixedly connected with a cover plate 16 away from the first gear 4, the cover plate 16 and the bottom plate 15 can accommodate lubricating oil, and a scattering assembly for scattering the lubricating oil on the tooth surface of the first gear 4 is arranged at the edge, specifically, the scattering assembly comprises a baffle 19.

[0048] Specifically, two second gears 5 capable of being slidably adjusted in position along the axial direction are arranged between the first shell 1 and the second shell 2, the two second gears 5 can be meshed with the corresponding first gears 4 respectively, and the meshing position is located obliquely above the first gear 4, and the specific steps of switching the meshing state of different second gears 5 and first gears 4 are well known to those skilled in the art, and will not be described here.

[0049] It also includes a third shell 3, the third shell 3 is fixedly connected with a pipeline for supplying oil between the cover plate 16 and the bottom plate 15, specifically, the pipeline comprises a first liquid conveying pipe 8 and a second liquid conveying pipe 9, the first liquid conveying pipe 8 and the second liquid conveying pipe 9 respectively face two different cover plates 16, specifically, the first liquid conveying pipe 8 and the second liquid conveying pipe 9 respectively face the liquid guide rings 1601 at the centers of the two different cover plates 16.

[0050] It also includes a horizontally arranged third gear 6, a oil feeding assembly for pumping lubricating oil to the top surface of the third gear 6 is arranged below the first gear 4, specifically, the oil feeding assembly comprises a transfer pump 12, the top of the third gear 6 is fixedly connected with another scattering assembly for scattering lubricating oil, the scattering assembly here specifically comprises an accommodating disc 21, and the first shell 1 is fixedly connected with a liquid discharge port 102 at the bottom end for discharging lubricating oil.

[0051] In the above embodiment, specifically, refer to Figures 4-6 The top end of the first shell 1 is fixedly connected with the second shell 2, one side of the second shell 2 is fixedly connected with the third shell 3, the third shell 3 and the second shell 2 are rotatably connected with the two first gears 4 and the two second gears 5, the two first gears 4 are coaxially arranged, the two second gears 5 are coaxially arranged, in order to avoid the problem of possible gear collision when speed changing, after the gear box gradually slows down to the state of stopping working, the second gear 5 is switched to mesh with different gears.

[0052] Specifically, the distance between the two first gears 4 is greater than the tooth width of the second gear 5, so as to avoid the simultaneous meshing of the two groups of gears, the second gear 5 is located obliquely above the first gear 4, and only one pair of first gear 4 and second gear 5 are meshed with each other at the same time when the gear box is working, by switching the second gear 5 to mesh with different first gears 4, the speed changing transmission of the gear box is realized.

[0053] In the above embodiment, please refer to the specific Figures 1-7 , the first housing 1 is provided with a collection tank 101 for containing lubricating oil at a position lower than the third gear 6, the bottom end of the collection tank 101 is communicated with a drain port 102 extending out of the first housing 1, the lubricating oil flowing along the tooth surface of the third gear 6 and being thrown to the inner wall of the first housing 1 and the second housing 2 flows downward to the collection tank 101 under its own gravity, and finally is discharged through the drain port 102.

[0054] In the above embodiment, please refer to the specific Figures 5-9 、 Figure 11 , the two first gears 4 are provided with a bottom plate 15 facing each other, the bottom plate 15 is fixedly connected with a cover plate 16 facing each other, the center of the cover plate 16 is provided with a liquid guide ring 1601 with a diameter larger than the rotating shaft of the first gear 4, specifically, the liquid outlet ends of the first liquid delivery pipe 8 and the second liquid delivery pipe 9 are towards the liquid guide ring 1601, and the lubricating oil sprayed out of the first liquid delivery pipe 8 and the second liquid delivery pipe 9 directly enters the space between the cover plate 16 and the bottom plate 15 through the liquid guide ring 1601.

[0055] The edge of the bottom plate 15 is provided with a sealing ring 1501 at intervals, the sealing ring 1501 can ensure that the lubricating oil does not leak from the position other than the liquid outlet 1603 during the rotation of the first gear 4, the adjacent sealing rings 1501 are provided with a gap 1502, the edge of the cover plate 16 is provided with a liquid outlet 1603 corresponding to the position of the gap 1502, and the lubricating oil between the bottom plate 15 and the cover plate 16 is sprayed out through the liquid outlet 1603 due to centrifugal force when the first gear 4 rotates.

[0056] Further, the cover plate 16 is fixedly connected with a liquid blocking piece 1602 arranged obliquely inside, when the bottom plate 15 and the cover plate 16 are in a closed state, the side of the liquid blocking piece 1602 away from the cover plate 16 is in close contact with the bottom plate 15, and the lubricating oil flowing towards the edge of the first gear 4 due to centrifugal force can be guided by the liquid blocking piece 1602 to flow out of the liquid outlet 1603 more quickly, avoiding that too much lubricating oil between the bottom plate 15 and the cover plate 16 affects the balance of the rotation of the first gear 4.

[0057] In the above embodiment, please refer to the specific Figures 4-9 、 Figure 11, the outer wall of the cover plate 16 is annularly spaced and rotationally connected with a centrifugal rod 17, the axis of the rotation shaft of the centrifugal rod 17 is parallel to the axis of the rotation shaft of the first gear 4, the end of the centrifugal rod 17 away from the rotation shaft of the centrifugal rod 17 is rotationally connected with a rotating rod 18, the axis of the rotation shaft of the rotating rod 18 is orthogonal to the axis of the rotation shaft of the corresponding centrifugal rod 17, the rotation shaft of the rotating rod 18 is provided with a torsional spring, the torsional spring is not compressed when the rotating rod 18 is in close contact with the centrifugal rod 17, specifically, the centrifugal rod 17 is in a natural state of drooping when the first gear 4 is not rotating, and the rotating rod 18 is kept in close contact with the centrifugal rod 17 by the elastic force of the torsional spring at the rotation shaft of the rotating rod 18, thereby avoiding interference with the movement of the second gear 5.

[0058] Further, the rotating rod 18 can be rotated to be in the same straight line with the centrifugal rod 17 by the centrifugal force of the rotating rod 18 when the first gear 4 rotates, the end of the rotating rod 18 away from the rotation shaft of the rotating rod 18 is fixedly connected with a baffle 19, the baffle 19 is used to spread the lubricating oil sprayed from the liquid outlet 1603 to the surface of the first gear 4, when the rotating rod 18 is in the same straight line with the centrifugal rod 17, the diameter of the position where the baffle 19 is located is greater than the diameter of the first gear 4, and the lubricating oil sprayed from the liquid outlet 1603 is uniformly spread to the tooth surface of the first gear 4 after being blocked by the baffle 19.

[0059] Specifically, the lubricating oil spread on the tooth surface of the first gear 4 will be thrown out by the centrifugal force of the lubricating oil after the lubricating oil accumulates too much, the lubricating oil thrown to the inner wall of the second shell 2 and the third shell 3 exchanges heat with the shell wall, efficiently transfers heat to the shell, and then dissipates heat through the fin structure of the outer wall of the shell, effectively improving the self-heat dissipation capability of the gear box.

[0060] In the above embodiment, specifically referring to Figures 2-7 , the side wall of the third shell 3 is fixedly connected with a mounting plate 301, the first liquid conveying pipe 8 and the second liquid conveying pipe 9 are respectively connected to the mounting plate 301, the first liquid conveying pipe 8 and the second liquid conveying pipe 9 lead to the liquid guide ring 1601 of the two cover plates 16, and the lubricating oil is conveyed to the gear in the working state in the gear box through the first liquid conveying pipe 8 or the second liquid conveying pipe 9, since only one set of first gear 4 and second gear 5 is engaged and works in the gear box at the same time, the lubricating oil conveying is controlled through two independent lubricating oil conveying pipelines, which effectively ensures that the lubricating oil can be conveyed to the required gear position.

[0061] Second embodiment:

[0062] A variable speed gear box with a lubricating oil circuit, please refer to Figures 1-11On the basis of the first embodiment, different from the first embodiment is that the inner wall of the second shell 2 is fixedly connected with a transfer pump 12, the inlet and outlet of the transfer pump 12 are respectively connected with a liquid suction pipe 13 leading to the bottom end of the third shell 3 and a liquid delivery pipe 14 leading to the top surface of the third gear 6, and the lubricating oil between the second shell 2 and the third shell 3 is transferred by the transfer pump 12, so as to avoid the accumulation of the lubricating oil in the second shell 2 and the third shell 3 from affecting the rotation of the first gear 4.

[0063] In the above embodiments, for details, please refer to Figures 2-7 , the rotation shaft of the first gear 4 extends between the first shell 1 and the second shell 2 and is fixedly connected with a bevel gear, the third gear 6 and the bevel gear are engaged with each other, specifically, the shaft connected with the second gear 5 is an input shaft, the rotation of the input shaft drives the second gear 5 to rotate, the second gear 5 drives the first gear 4 engaged with the second gear 5 to rotate, the rotation shaft of the first gear 4 drives the bevel gear engaged with the third gear 6, and further drives the third gear 6 to rotate, and the rotation shaft connected with the third gear 6 is an output shaft of the gear box.

[0064] Further, the top surface of the third gear 6 is fixedly connected with a containing disc 21, the edge of the containing disc 21 is provided with an inclined downward chamfer, and a support rod 22 is fixedly connected at the top end of the edge in a ring shape, specifically, the bottom end of the containing disc 21 is flush with the top end of the third gear 6, and part of the lubricating oil flowing out from the edge of the containing disc 21 can directly lubricate the tooth surface of the third gear 6 along the top surface of the third gear 6.

[0065] Further, the top end of the support rod 22 is fixedly connected with a blocking ring 23, the height of the top end of the containing disc 21 is higher than the height of the top end of the third gear 6, and the blocking ring 23 is used to block the lubricating oil leaving the containing disc 21 to the tooth surface of the third gear 6, the lubricating oil in the containing disc 21 is overflowed at the same time, part of the lubricating oil flows to the conical surface of the bevel gear along the inclined chamfer, and another part of the lubricating oil is thrown out by centrifugal force, the blocking ring 23 blocks this part of the lubricating oil, so that the lubricating oil flows to the tooth surface of the third gear 6, and further realizes good lubrication of the third gear 6.

[0066] Third embodiment:

[0067] A variable gear box with a lubricating oil path, please refer to Figures 1-11 On the basis of the second embodiment, different from the second embodiment is that the first shell 1 is fixedly connected with a heating cylinder 7 for wrapping the first liquid delivery pipe 8 and the second liquid delivery pipe 9, the heating cylinder 7 is provided with a heating assembly for heating the lubricating oil in the first liquid delivery pipe 8 and the second liquid delivery pipe 9, specifically, the heating assembly in the heating cylinder 7 adopts an electric heating resistance wire in this embodiment, and the heating cylinder is used to heat the lubricating oil flowing into the inside of the variable gear box at the cold start of the variable gear box, so as to improve the flowability of the lubricating oil, and help the lubricating oil to better cover the gears needing lubrication.

[0068] Specifically, the first lead wire 10 and the second lead wire 11 are respectively connected to the mounting plate 301, wherein the first lead wire 10 is used to supply power to the warming cylinder 7 after penetrating into the gear box, and the second lead wire 11 is used to supply power to the transfer pump 12 after penetrating into the gear box, and the first lead wire 10 and the second lead wire 11 will not interfere with the normal rotation of the gears in the gear box.

[0069] Further, the outer wall of the second shell 2 is fixedly connected with a temperature measuring probe 201 inserted into the second shell 2, which is used to detect the temperature inside the gear box, so as to determine whether the external plate heat exchanger and other components need to be started.

[0070] The variable speed gear box in the application works as follows:

[0071] The gear box is full of lubricating oil when it is not started, and the gear box continuously discharges the lubricating oil stored in the gear box from the drain port 102 during the process of gradually increasing the rotation speed of the internal gears when the gear box is started;

[0072] When the lubricating oil in the gear box is about to be discharged, the first gear 4 corresponding to the first liquid delivery pipe 8 is engaged with the corresponding second gear 5, and the lubricating oil is delivered from the first liquid delivery pipe 8 into the corresponding liquid guide ring 1601, and vice versa;

[0073] When the first gear 4 rotates, the centrifugal rod 17 is rotated by centrifugal force to a direction away from the center of the first gear 4 along the radial direction of the first gear, and the rotating rod 18 at the end of the centrifugal rod 17 is rotated and expanded along its rotation axis by the centrifugal force of the counterweight 20, which compresses the torsion spring in the rotation axis of the rotating rod 18 during the expansion process, until the centrifugal rod 17 and the rotating rod 18 are kept in the same straight line state, at this time, the baffle 19 blocks the liquid outlet 1603 at a position away from the tooth surface of the first gear 4, and the lubricating oil sprayed from the liquid outlet 1603 is dispersed by impacting the baffle 19, and the reaction force of the baffle 19 is evenly distributed to the tooth surface of the first gear 4, thereby realizing the lubrication between the first gear 4 and the second gear 5.

[0074] The transfer pump 12 works to pump the lubricating oil between the second shell 2 and the third shell 3 to the containing disc 21, and the lubricating oil about to overflow in the containing disc 21 is centrifuged under the centrifugal force during the rotation of the third gear 6, part of which is thrown out along the edge of the top end of the containing disc 21, and the lubricating oil is dispersed to the tooth surface of the third gear 6 after impacting the bottom wall of the baffle ring 23, and the other part of the lubricating oil overflowing the containing disc 21 flows downward along the top end of the third gear 6 and is dispersed, which cools the third gear 6 while ensuring that the lubricating oil between the third gear 6 and the meshing gears is not easily broken;

[0075] The lubricating oil finally falling into the collecting tank 101 is discharged from the liquid outlet 102, and then input into the gear box through the first or second liquid conveying pipe 8 or 9 after passing through the oil filter, plate heat exchanger and other components connected to the gear box.

[0076] Although the embodiments of the present application have been shown and described, the specific embodiments are merely illustrative of the present application, and are not intended to limit the present application, and the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner, and those skilled in the art can make modifications, replacements and variations of the embodiments without creative contribution after reading the specification, as long as they are within the scope of the claims of the present application.

Claims

1. A transmission gear case having a lubricating oil passage, characterized by comprising: The utility model provides a lubricating oil distribution device for gear box, including: vertically arranged first gear, the coaxial fixed connection of first gear side wall has bottom plate, the fixed connection of bottom plate away from first gear's direction has cover plate, can accommodate lubricating oil between cover plate and bottom plate, and the edge place is provided with the distribution subassembly for spreading lubricating oil to first gear tooth surface; Third shell, the fixed connection of third shell has the pipeline for supplying oil between cover plate and bottom plate; Horizontally arranged third gear, the fixed connection of top of third gear has another distribution subassembly for spreading lubricating oil, the oil delivery assembly for pumping lubricating oil to the top surface of third gear is arranged below first gear; The fixed connection of bottom end of first shell has the liquid discharge port for discharging lubricating oil, the fixed connection of top end of first shell has second shell, the fixed connection of one side of second shell has third shell, the rotation connection between third shell and second shell has two first gears and two second gears, two first gears are coaxially arranged, two second gears are coaxially arranged, the interval of two first gears is greater than the tooth width of second gear, the second gear is located in the oblique upper side of first gear, and only one pair of first gear and second gear is engaged with each other when gear box works, the bottom plate is arranged oppositely to two first gears, the fixed connection of bottom plate oppositely has cover plate, the center of cover plate is provided with the liquid guide ring with the diameter greater than the rotating shaft of first gear, the edge of bottom plate is arranged with sealing ring at intervals, the adjacent sealing ring is arranged with notch, the edge of cover plate is arranged with liquid outlet at the position corresponding to notch, the outer wall of cover plate is annularly arranged with centrifugal rod at intervals, the axis of rotating shaft of centrifugal rod is parallel to the axis of rotating shaft of first gear, the end of centrifugal rod away from rotating shaft is rotationally connected with rotating rod, the axis of rotating shaft of rotating rod is orthogonal to the axis of rotating shaft of corresponding centrifugal rod, the rotating shaft of rotating rod is provided with torsional spring, the torsional spring is not compressed when rotating rod and centrifugal rod are attached to each other, the rotating rod can be rotated to the state that rotating rod and centrifugal rod are in the same straight line under the centrifugal force of rotating rod when first gear rotates, the end of rotating rod away from rotating shaft is fixedly connected with baffle, the baffle is used to spread the lubricating oil sprayed from liquid outlet to the surface of first gear, the diameter of the position where baffle is located is greater than the diameter of first gear when rotating rod and centrifugal rod are in the same straight line.

2. The transmission gear case having a lubricating oil passage according to claim 1, characterized by: The side wall of third shell is fixedly connected with mounting plate, the first liquid delivery pipe and the second liquid delivery pipe are respectively connected to the liquid guide ring of the two cover plates.

3. A transmission gearbox having a lubricating oil circuit according to claim 2, characterized in that: The first shell is fixedly connected with a heating cylinder for wrapping the first liquid delivery pipe and the second liquid delivery pipe, and the heating cylinder is provided with a heating assembly for heating the lubricating oil in the first liquid delivery pipe and the second liquid delivery pipe.

4. The transmission gear case having a lubricating oil passage according to claim 1, characterized by: The inner wall of the second shell is fixedly connected with a transfer pump, and the inlet and outlet of the transfer pump are respectively connected with a liquid suction pipe leading to the bottom end of the third shell and a liquid delivery pipe leading to the top surface of the third gear.

5. A transmission gearbox having a lubricating oil circuit according to claim 4, characterized in that: The rotation shaft of the first gear extends between the first housing and the second housing and is fixedly connected with a bevel gear, the third gear is engaged with the bevel gear, the top surface of the third gear is fixedly connected with a containing disc, the edge of the containing disc is provided with a downward inclined chamfer, and a support rod is annularly and fixedly connected with the top end of the edge, the top end of the support rod is fixedly connected with a blocking ring, the height of the top end of the containing disc is higher than the height of the top end of the third gear, and the blocking ring is used for blocking the lubricating oil leaving the containing disc to the tooth surface of the third gear.

6. The transmission gear case having a lubricating oil passage according to claim 1, characterized by: A collecting groove for containing lubricating oil is arranged in the first housing at a position lower than the third gear, and the bottom end of the collecting groove is communicated with a liquid discharge port extending out of the first housing.

7. The transmission gear case having a lubricating oil passage according to claim 1, characterized by: The outer wall of the second housing is fixedly connected with a temperature measuring probe inserted into the second housing.

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