Circulating lubrication gear box

Abstract

The application provides a circulating gear box, which comprises a box body and a box cover, a first input / output shaft and a second input / output shaft are arranged in a box structure formed by the box body and the box cover, a third gear is sleeved on the second input / output shaft, a first gear is sleeved on the first input / output shaft, the first input / output shaft is provided with a main oil injection hole, the first gear is provided with an oil injection channel, the oil injection channel of the first gear is communicated with the main oil injection hole, a gear pump is further arranged, the gear pump is provided with a pump oil outlet and an oil inlet, the pump oil outlet is communicated with the main oil injection hole, an oil receiving box is arranged below the box body, a filter element is arranged in the oil receiving box, and the oil inlet is communicated with the filter element below the oil receiving box, so that the problem that the traditional gear box needs to immerse the gear in lubricating oil to cause large running resistance is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of speed reducer, in particular to a circulating lubrication gear box. BACKGROUND

[0002] The gear reducer is usually lubricated by oil or grease, in order to avoid repeated filling of labor waste, usually choose to add a large number of oil, grease in the hand assembly, at least to the transmission gear wheel diameter larger gear end immersed in the liquid below, so that the transmission process, gear tooth surface carrying oil and another gear meshing when the formation of self-lubrication. This kind of mechanism simple structure, convenient lubrication, good heat dissipation, but also has certain shortage, such as gear operation need to move the oil, overcome the resistance work, consume the transmission power, and when the gear speed fast oil splash, impact the inner wall of the gearbox makes the speed reducer vibration increases, and the oil filled with bubbles. SUMMARY

[0003] The present application provides a circulating lubrication gear box, solve the problem of traditional gear box need gear immersed in lubricating oil resulting in running resistance.

[0004] In order to solve the above technical problems, the technical scheme adopted by the present application is: a circulating lubrication gear box, comprising a box body and a box cover, the box body and the box cover are provided with a first input and output shaft and a second input and output shaft, the second input and output shaft is provided with a third gear, the first input and output shaft is provided with a first gear, the first input and output shaft is provided with a main oil injection hole, the first gear is provided with an oil injection channel, the oil injection channel of the first gear is communicated with the main oil injection hole, and a gear pump is further arranged, the gear pump is provided with a pump oil port and an oil inlet, the pump oil port is communicated with the main oil injection hole, and an oil receiving box is arranged below the box body, the oil receiving box is provided with a filter element, and the oil inlet is communicated with the filter element below the oil receiving box.

[0005] In the preferred scheme, the gear pump further comprises a fourth gear and a fifth gear which are engaged with each other, the fourth gear is provided with a driving shaft, and a shaft coupling is further arranged, and the driving shaft is connected with the second input and output shaft through the shaft coupling.

[0006] In the preferred scheme, the first input and output shaft is provided with a first gear and a second gear, the end faces of the first gear and the second gear are tightly attached, the first gear and the second gear can rotate relative to each other, the end face of the first gear is provided with a first semicircular groove, the end face of the second gear is provided with a second semicircular groove, the first semicircular groove and the second semicircular groove are circumferentially rotated relative to each other to form a whole circular structure, the whole circular structure is provided with a top bead at the orifice of the first semicircular groove and the second semicircular groove, the end faces of the first gear and the second gear are provided with a sunken groove, the sunken groove of the first gear and the second gear is provided with a top ring which is symmetrically arranged, the side of the top ring away from the top bead is provided with a groove, and the first input and output shaft is provided with a main oil injection hole, and the main oil injection hole is communicated with the groove.

[0007] In the preferred solution, the first gear is internally provided with a first shaft sleeve, the second gear is internally provided with a second shaft sleeve, the first shaft sleeve and the second shaft sleeve are connected with the first input-output shaft sleeve, the side wall of the first shaft sleeve and the second shaft sleeve is provided with a plurality of second oil dispersion holes arranged in the circumferential direction, the inner wall of the main oil injection hole is provided with a plurality of first oil dispersion holes arranged in the circumferential direction, the outer wall of the first input-output shaft is provided with an oil collection groove at the first oil dispersion hole, one end of each second oil dispersion hole is communicated with the oil collection groove, and the other end of each second oil dispersion hole is communicated with the groove of the top ring.

[0008] In the preferred solution, the side wall of the sink groove of the first gear and the second gear is provided with a boring groove, the end face of the first gear and the second gear is provided with a second drainage groove, one end of the second drainage groove is connected with the tooth root, and the other end of the second drainage groove is provided with a drainage hole between the boring groove.

[0009] In the preferred solution, the first input-output shaft is sleeved with two lock nuts, the first shaft sleeve and the second shaft sleeve are arranged between the two lock nuts, the lock nuts are threadedly connected with the first input-output shaft, and the two lock nuts are clamped to make the end faces of the first shaft sleeve and the second shaft sleeve abut.

[0010] In the preferred solution, the end face of the first shaft sleeve is provided with an inner recess, the end face of the second shaft sleeve is provided with an outer convex part, and the inner recess and the outer convex part are sleeved.

[0011] The beneficial effects of the present application are as follows: the external circulation type lubrication and the sinking type oil collection box are adopted, the gear is separated from the liquid surface, the running resistance is reduced, the lubrication and heat dissipation effects are ensured, the gear pump utilizes the power of the reduction gearbox, and additional power driving is not needed, the combined staggered gear is used as a gear set and is meshed with other gears, the staggered gear angle is maintained through the oil pressure, the meshing gap is effectively reduced, the running stability is improved, the reverse gap is reduced, and the gear transmission precision is improved. BRIEF DESCRIPTION OF DRAWINGS

[0012] The present application will be further described below in combination with the drawings and examples.

[0013] Figure 1 is a top view of the present application.

[0014] Figure 2 is a schematic diagram of the gear box part of the present application.

[0015] Figure 3 is an internal structure diagram of the gear pump of the present application.

[0016] Figure 4 is a sectional view of the combined gear of the present application.

[0017] Figure 5 is a schematic diagram of the meshing of the combined gear of the present application.

[0018] Figure 6 is a local schematic diagram of the combined gear of the present application.Figure 1 .

[0019] Figure 7 is a partial view of the combined gear of the present application Figure 2 .

[0020] Figure 8 is a view of the top bead and double semi-circular groove structure of the present application.

[0021] Figure 9 is a combined gear structure of the present application Figure 1 .

[0022] Figure 10 is a combined gear structure of the present application Figure 2 .

[0023] Figure 11 is a view of the first input / output shaft and shaft sleeve of the present application.

[0024] In the figure: first input / output shaft 1; main oil injection hole 101; first dispersed oil hole 102; oil collection groove 103; first gear 2; first semi-circular groove 201; second gear 3; second semi-circular groove 301; boring groove 302; drainage hole 303; second drainage groove 304; first shaft sleeve 4; second dispersed oil hole 401; second shaft sleeve 5; lock nut 6; top bead 7; top ring 8; groove 801; sunken groove 802; third gear 9; gear pump 10; fourth gear 1001; fifth gear 1002; pump oil port 1003; oil inlet port 1004; driving shaft 1005; shaft coupling 11; box body 12; box cover 13; second input / output shaft 14; oil receiving box 15; filter element 1501. DETAILED DESCRIPTION

[0025] As Figures 1-11 in the figure, a circulating type lubricating gear box comprises a box body 12 and a box cover 13, a first input / output shaft 1 and a second input / output shaft 14 are arranged in the box structure formed by the box body 12 and the box cover 13, the third gear 9 is sleeved on the second input / output shaft 14, the first gear 2 is sleeved on the first input / output shaft 1, the first input / output shaft 1 is provided with a main oil injection hole 101, the first gear 2 is provided with an oil injection channel, the oil injection channel of the first gear 2 is in communication with the main oil injection hole 101, the gear pump 10 is further arranged, the gear pump 10 is provided with a pump oil port 1003 and an oil inlet port 1004, the pump oil port 1003 is in communication with the main oil injection hole 101, an oil receiving box 15 is arranged below the box body 12, the oil receiving box 15 is provided with a filter element 1501, the oil inlet port 1004 is in communication with the filter element 1501 below in the oil receiving box 15.

[0026] The lubricating oil is sprayed from the first gear 2 to the tooth surface of the third gear 9, and when the gears are engaged, the gears are lubricated, and the excess oil flows down and carries away the debris of the gear wear, while reducing the temperature of the tooth surface. After the oil is filtered by the filter element 1501, the gear pump 10 draws clean oil from below the filter element 1501 and pumps it into the main oil inlet hole 101 again for lubrication. The oil receiving box 15 and the box body 12 are assembled and installed, which is convenient to take down the oil receiving box 15 to replace the filter element 1501.

[0027] Since the first gear 2 and the third gear 9 are not immersed in the oil, the running resistance is very small.

[0028] In the preferred embodiment, the gear pump 10 further comprises a fourth gear 1001 and a fifth gear 1002 that are engaged with each other, the fourth gear 1001 is provided with a driving shaft 1005, and the driving shaft 1005 is connected with the second input and output shaft 14 through the coupling 11.

[0029] The power of the gear box is used as the power source of the gear pump 10, and since the gears are connected in series, the pumping speed is positively related to the running speed of the gear box, and the lubrication speed is adaptively adjusted.

[0030] In the preferred embodiment, the first input and output shaft 1 is sleeved with the first gear 2 and the second gear 3, the end surfaces of the first gear 2 and the second gear 3 are tightly attached, the first gear 2 and the second gear 3 can rotate relative to each other, the end surface of the first gear 2 is provided with a first semicircular groove 201, the end surface of the second gear 3 is provided with a second semicircular groove 301, the first semicircular groove 201 and the second semicircular groove 301 are circumferentially rotated relative to each other to form a whole circular structure, the first semicircular groove 201 and the second semicircular groove 301 are provided with a top bead 7 at the aperture of the whole circular structure, the end surfaces of the first gear 2 and the second gear 3 are provided with a sunken groove 802, the sunken groove 802 of the first gear 2 and the second gear 3 is provided with a top ring 8 arranged symmetrically, the side of the top ring 8 away from the top bead 7 is provided with a recess 801, and the first input and output shaft 1 is provided with a main oil inlet hole 101 that is communicated with the recess 801.

[0031] Initially, the teeth of the first gear 2 and the teeth of the second gear 3 are aligned, and at this time, the first semicircular groove 201 and the second semicircular groove 301 are in a misaligned state.

[0032] When the external oil injection machine injects oil into the main oil injection hole 101 through the rotary joint, the oil or low viscosity grease enters the groove 801, lifting the top ring 8. The top ring 8 is provided with a wedge surface, and the two top rings 8 are centered and extruded to the top bead 7, extruding the top bead 7 to the orifice of the first semicircular groove 201 and the second semicircular groove 301. The diameter of the top bead 7 is slightly larger than the diameter of the whole circle structure, so that the misaligned first semicircular groove 201 and the second semicircular groove 301 are extruded to the middle, making them form a whole circle structure. At the same time, the teeth of the first gear 2 and the teeth of the second gear 3 are circumferentially staggered at an angle, until the two tooth surfaces abut against the tooth surface of the other gear.

[0033] When the other gear tooth gap is small, the misaligned teeth of the first gear 2 and the second gear 3 are extruded when meshing, the angle of the teeth of the first gear 2 and the second gear 3 is reduced, and the top bead 7 is extruded by the first semicircular groove 201 and the second semicircular groove 301 which are separated. When the other gear tooth gap is large, under the action of oil pressure, the top bead 7 extrudes the first semicircular groove 201 and the second semicircular groove 301 to make them close together, the angle of the teeth of the first gear 2 and the second gear 3 is large, until they contact the tooth surface of the other gear again, so that they are always in a state of no gap when meshing.

[0034] In the preferred embodiment, the inside of the first gear 2 is provided with a first shaft sleeve 4, the inside of the second gear 3 is provided with a second shaft sleeve 5, the first shaft sleeve 4 and the second shaft sleeve 5 are sleeved with the first input and output shaft 1, the side wall of the first shaft sleeve 4 and the second shaft sleeve 5 is provided with a plurality of second dispersed oil holes 401 arranged circumferentially, the inner wall of the main oil injection hole 101 is provided with a plurality of first dispersed oil holes 102 along the circumference, and the outer wall of the first input and output shaft 1 is provided with an oil collecting groove 103 at the orifice of the first dispersed oil hole 102. Each second dispersed oil hole 401 communicates with the oil collecting groove 103 at one end, and communicates with the groove 801 of the top ring 8 at the other end.

[0035] The first dispersed oil hole 102 is two circles, which respectively communicates with the second dispersed oil hole 401 of the first shaft sleeve 4 and the second shaft sleeve 5.

[0036] Because it is not possible to directly drill a blind hole into the end face of the first gear 2 and the second gear 3, it is necessary to use the second dispersed oil hole 401 on the shaft sleeve as a transition to connect the main oil injection hole 101 and the groove 801 of the top ring 8.

[0037] The first gear 2 and the first shaft sleeve 4 are fixed and integrated after being sleeved, and the second gear 3 and the second shaft sleeve 5 are fixed and integrated after being sleeved.

[0038] In the preferred embodiment, the side wall of the sink 802 of the first gear 2 and the second gear 3 is provided with a boring groove 302, the end face of the first gear 2 and the second gear 3 is provided with a second drainage groove 304, the second drainage groove 304 is connected with the tooth root at one end, and the other end of the second drainage groove 304 and the boring groove 302 are provided with a drainage hole 303.

[0039] The lubricating oil or grease in the main oil injection hole 101 is under pressure and is gathered in the oil collecting groove 103 from the first oil dispersion hole 102, and then enters the groove 801 along the second oil dispersion hole 401. When the groove 801 is lifted, the oil or grease enters the drainage hole 303 from the boring groove 302. Since the end faces of the first gear 2 and the second gear 3 are in contact, the oil or grease is sprayed from the tooth root of the first gear 2 and the second gear 3 along the second drainage groove 304, and lubricates the meshing position with other gears.

[0040] In the preferred scheme, two lock nuts 6 are sleeved on the first input and output shaft 1, the first shaft sleeve 4 and the second shaft sleeve 5 are arranged between the two lock nuts 6, the lock nuts 6 are threadedly connected with the first input and output shaft 1, and the two lock nuts 6 are clamped to make the end faces of the first shaft sleeve 4 and the second shaft sleeve 5 in contact.

[0041] In the preferred scheme, the end face of the first shaft sleeve 4 is provided with an inner recess, the end face of the second shaft sleeve 5 is provided with an outer protrusion, and the inner recess and the outer protrusion are slidably sleeved.

[0042] The above-described embodiments are only preferred technical solutions of the present application, and should not be regarded as a limitation of the present application. The protection scope of the present application should be the technical solutions recited in the claims, and include equivalent replacement schemes of the technical features recited in the claims. That is, equivalent replacement improvements within this range are also within the protection scope of the present application.

Claims

1. A circulating lubricating gear box, characterized by: The box type structure is composed of a box body (12) and a box cover (13), a first input-output shaft (1) and a second input-output shaft (14) are arranged in the box type structure, a third gear (9) is sleeved on the second input-output shaft (14), a first gear (2) is sleeved on the first input-output shaft (1), the first input-output shaft (1) is provided with a main oil injection hole (101), the first gear (2) is provided with an oil injection channel, the oil injection channel of the first gear (2) is communicated with the main oil injection hole (101), a gear pump (10) is further arranged, the gear pump (10) is provided with a pump oil outlet (1003) and an oil inlet (1004), the pump oil outlet (1003) is communicated with the main oil injection hole (101), an oil receiving box (15) is arranged below the box body (12), a filter element (1501) is arranged in the oil receiving box (15), the oil inlet (1004) is communicated with the filter element (1501) below the oil receiving box (15). The gear pump (10) further comprises a fourth gear (1001) and a fifth gear (1002) which are engaged with each other, the fourth gear (1001) is provided with a driving shaft (1005), and a shaft coupling (11) is further arranged, the driving shaft (1005) is connected with the second input-output shaft (14) through the shaft coupling (11). The first input-output shaft (1) is sleeved with the first gear (2) and the second gear (3), the end faces of the first gear (2) and the second gear (3) are tightly attached, the first gear (2) and the second gear (3) can rotate relative to each other, the end face of the first gear (2) is provided with a first semicircular groove (201), the end face of the second gear (3) is provided with a second semicircular groove (301), the first semicircular groove (201) and the second semicircular groove (301) are circumferentially rotated relative to each other to form a whole circular structure, the first semicircular groove (201) and the second semicircular groove (301) are provided with a top bead (7) at the orifice of the whole circular structure, the end faces of the first gear (2) and the second gear (3) are provided with a sunken groove (802), the sunken groove (802) of the first gear (2) and the second gear (3) is provided with a top ring (8) which is symmetrically arranged, the side of the top ring (8) away from the top bead (7) is provided with a recess (801), the first input-output shaft (1) is provided with a main oil injection hole (101), and the main oil injection hole (101) is communicated with the recess (801).

2. The circulating gear box according to claim 1, wherein: The inner side of the first gear (2) is provided with a first shaft sleeve (4), the inner side of the second gear (3) is provided with a second shaft sleeve (5), the first shaft sleeve (4) and the second shaft sleeve (5) are sleeved with the first input-output shaft (1), the side wall of the first shaft sleeve (4) and the second shaft sleeve (5) is provided with a plurality of second dispersed oil holes (401) which are circumferentially arranged, the inner wall of the main oil injection hole (101) is circumferentially provided with a plurality of first dispersed oil holes (102), the outer wall of the first input-output shaft (1) is provided with an oil collecting groove (103) at the orifice of the first dispersed oil hole (102), one end of each second dispersed oil hole (401) is communicated with the oil collecting groove (103), and the other end of each second dispersed oil hole (401) is communicated with the recess (801) of the top ring (8).

3. The circulating gear case of claim 2 wherein: The side wall of the sink (802) of the first gear (2) and the second gear (3) is provided with a boring groove (302), the end face of the first gear (2) and the second gear (3) is provided with a second drainage groove (304), one end of the second drainage groove (304) is connected with the tooth root, and the other end of the second drainage groove (304) and the boring groove (302) are provided with a drainage hole (303).

4. The circulating gear case of claim 1 wherein: Two lock nuts (6) are sleeved on the first input and output shaft (1), the first shaft sleeve (4) and the second shaft sleeve (5) are arranged between the two lock nuts (6), the lock nut (6) is threadedly connected with the first input and output shaft (1), and the two lock nuts (6) are oppositely clamped so that the end faces of the first shaft sleeve (4) and the second shaft sleeve (5) are attached.

5. The circulating gear case of claim 2 wherein: The end face of the first shaft sleeve (4) is provided with an inner recess, the end face of the second shaft sleeve (5) is provided with an outer convex part, and the inner recess and the outer convex part are slidably sleeved.

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