Oil duct structure for providing active lubrication for synchronous gear ring gear shifting groove

Abstract

The utility model discloses an oil duct structure for providing active lubrication for a synchronous gear ring gear shifting groove. Comprising a main oil duct arranged along the axis of an intermediate shaft, a radial oil hole I for communicating the main oil duct with a joint part between the wall of a wheel shaft hole of a driving wheel and the periphery of the intermediate shaft, an axial oil groove which is formed in the surface of the intermediate shaft along the axial direction and is communicated with an outer outlet of the radial oil hole I, and an oil passing gap which is communicated with the axial oil groove and is arranged between a combination spline and a combination gear, a second radial oil hole is formed between the middle of the bottom of the synchronous gear ring gear shifting groove and the inner gear ring, and when the synchronous gear ring is connected with the combined spline and the combined gear in a sleeved mode at the same time to conduct torque, the second radial oil hole is aligned with the oil passing gap. The synchronous gear ring has the advantages that the gear shifting block is fully lubricated with the left groove wall and the right groove wall respectively, so that abrasion between the gear shifting block and the left groove wall and abrasion between the gear shifting block and the right groove wall are greatly reduced, the service life of the synchronous gear ring and the gear shifting block is prolonged, and gear shifting reaction delay, pause and abnormal sound in the using process are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to an oil channel structure providing active lubrication to a synchronous gear ring shift groove, belonging to the technical field of gearbox lubrication. BACKGROUND

[0002] The mine truck multi-motor new energy ATM gearbox, the motor and the intermediate shaft keep constant connection through the intermediate transmission device and the intermediate shaft, the intermediate shaft has the fixed setting combined spline for shifting, the intermediate shaft on the two sides or one side of each combined spline is equipped with the shift driving wheel that can rotate around the intermediate shaft, the shift driving wheel has the combined gear integrated with the shift driving wheel on the side adjacent to the combined spline, the combined spline is sleeved with the synchronous gear ring with the internal tooth matched with the combined spline on the outer periphery, the synchronous gear ring can slip to the combined gear and the combined spline sleeve at the same time to realize the synchronous rotation of the combined spline and the combined gear. When the combined gear and the combined spline rotate synchronously, the shift driving gear integrated with the combined gear rotates synchronously, the shift driving gear drives the shift driven gear fixed on the output shaft to rotate, so that the output shaft rotates at a specific speed. The intermediate shaft is provided with a plurality of shift driving gears, each shift driving gear corresponds to a shift driven gear to form a shift gear with different speed ratios.

[0003] The above-mentioned synchronous gear ring outer periphery has an annular outward opening shift groove, the shift groove is provided with a shift block controlled by the shift fork shaft, when the shift fork shaft applies leftward force to the shift block, the left side of the shift block contacts the left groove wall of the shift groove of the synchronous gear ring and applies leftward force, so that the synchronous gear ring slips to the left combined gear, thereby realizing first shift; when the shift fork shaft applies rightward force to the shift block, the right side of the shift block contacts the right groove wall of the shift groove of the synchronous gear ring and applies rightward force, so that the synchronous gear ring slips to the right combined gear, thereby realizing another shift.

[0004] Because the intermediate shaft of the new energy ATM gearbox of the mine truck multi-motor is always connected with the driving motor, the combination spline has a rotating torque, and when shifting, the torque is also transmitted to the combination gear through the synchronizing ring gear, so that the inner teeth between the synchronizing ring gear and the combination spline teeth and the gear teeth of the combination gear have strong positive pressure, causing the shifting block to slip when the synchronizing ring gear is pushed to resist the strong frictional resistance between the inner teeth of the synchronizing ring gear and the combination spline teeth and the gear teeth of the combination gear, and because the synchronizing ring gear rotates relative to the shifting block, the strong frictional resistance is directly manifested as strong frictional force between the shifting block and the left and right side walls of the synchronizing ring gear, and in the case that the lubrication between the shifting block and the left and right side walls of the synchronizing ring gear is not enough, the left and right side walls of the shifting block and the synchronizing ring gear will be quickly worn, the gap between the shifting block and the left and right side walls of the synchronizing ring gear will be increased, and finally the shifting will be delayed, interrupted and abnormal. Content of the utility model

[0005] The technical problem to be solved by the utility model is how to ensure sufficient lubrication between the shifting block and the left and right side walls of the synchronizing ring gear shifting groove, and further avoid quick wear between the shifting block and the left and right side walls of the synchronizing ring gear shifting groove.

[0006] In view of the above problems, the technical solution provided by the utility model is:

[0007] An oil channel structure for providing active lubrication to the synchronizing ring gear shifting groove, comprising a main oil channel arranged along the intermediate shaft axis, a radial oil hole one connecting the combination part between the wheel shaft hole wall of the main oil channel and the intermediate shaft outer periphery, an axial oil groove arranged on the surface of the intermediate shaft and connecting the outer outlet of the radial oil hole one, an oil passing gap between the combination spline and the combination gear connected with the axial oil groove, a radial oil hole two arranged between the bottom of the synchronizing ring gear shifting groove and the inner ring gear, and the radial oil hole two is aligned with the oil passing gap when the synchronizing ring gear, the combination spline and the combination gear simultaneously sleeve and conduct torque.

[0008] A radially recessed annular left oil accumulation groove and a radially recessed annular right oil accumulation groove are respectively arranged at the intersection of the groove bottom of the shifting groove and the left groove wall and the right groove wall.

[0009] An inner ring oil groove with an inner opening connected with the radial oil hole two is arranged in the middle part of the inner ring gear.

[0010] An annular outer ring oil groove connected with the outer outlet of the radial oil hole one is arranged on the outer periphery of the intermediate shaft.

[0011] The axial oil groove has a plurality of oil grooves, and all of them are connected with the outer ring oil groove.

[0012] The radial oil hole two is provided with a plurality of inner openings, and all of them are connected with the inner ring oil groove.

[0013] A radial oil groove is arranged on the side of the combination gear of the oil passing gap.

[0014] Beneficial effect: make the shift block respectively with left groove wall and right groove wall get full lubrication, thereby greatly slow down the wear between shift block and left groove wall and right groove wall, further prolong the service life of synchronizing gear ring and shift block, avoid the shift reaction delay, stagnation and abnormal sound in the use process. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is the sectional view of the intermediate shaft;

[0016] Figure 2 is the partial schematic view of the intermediate shaft; Figure 1

[0017] Figure 3 is the partial schematic view of the intermediate shaft; Figure 2

[0018] Figure 4 is the exploded schematic view of the intermediate shaft, driving wheel and synchronizing gear ring.

[0019] In the figure: 1, intermediate shaft;11, combined spline;12, main oil passage;13, radial oil hole one;14, axial oil groove;15, outer ring oil groove;16, oil passing gap;2, driving wheel;21, combined gear;211, radial oil groove;3, synchronizing gear ring;31, shift groove;311, radial oil hole two;312, left groove wall;313, right groove wall;314, left oil accumulation groove;315, right oil accumulation groove;316, inner gear ring;317, inner ring oil groove;4, shift block. DETAILED DESCRIPTION

[0020] The utility model will be further described below in combination with the drawings. Example one

[0021] As Figure 1 ​​The oil channel structure for providing active lubrication to the gear shifting groove of the synchronizing ring gear, as shown in Fig. 4, comprises a main oil channel 12 arranged along the axial line of the intermediate shaft 1, a radial oil hole 13 connecting the main oil channel 12 and the joint between the hole wall of the wheel shaft hole of the driving wheel 2 and the outer periphery of the intermediate shaft 1, an axial oil groove 14 arranged along the axial direction on the surface of the intermediate shaft 1 and connecting the outer outlet of the radial oil hole 13, and an oil passing gap 16 between the joint spline 11 and the joint gear 21 connected with the axial oil groove 14. The improvement is that a radial oil hole 311 is arranged between the bottom of the gear shifting groove 31 of the synchronizing ring gear 3 and the inner ring gear 316, and the radial oil hole 311 is aligned with the oil passing gap 16 when the synchronizing ring gear 3 is connected with the joint spline 11 and the joint gear 21 to transmit torque. In the above structure, a part of the gear shifting block 4 is located in the gear shifting groove 31 of the synchronizing ring gear 3, and the other part is connected with the shift lever shaft (not shown in the figure) outside the synchronizing ring gear 3. There are gaps between the gear shifting block 4 and the groove bottom of the gear shifting groove 31, and between the gear shifting block 4 and the left groove wall 312 and the right groove wall 313. The lubricating oil in the main oil channel 12 is delivered from the lubricating oil at the bottom of the gearbox by the oil pump, and has sufficient oil pressure to ensure that it is delivered to the lubricating position. Under working conditions, the lubricating oil directly enters the bottom of the gear shifting groove 31 of the synchronizing ring gear 3 from the main oil channel 12, the radial oil hole 311, the axial oil groove 14, the oil passing gap 16 and the radial oil hole 311, and under the action of the centrifugal force of the rotating synchronizing ring gear 3, it flows outward along the gaps between the gear shifting block 4 and the left groove wall 312 and the right groove wall 313, so that the gear shifting block 4 is fully lubricated between the left groove wall 312 and the right groove wall 313, thereby greatly reducing the wear between the gear shifting block 4 and the left groove wall 312 and the right groove wall 313, and prolonging the service life of the synchronizing ring gear 3 and the gear shifting block 4, and avoiding gear shifting reaction delay, jerk and abnormal noise during use.

[0022] Radial concave annular left oil collecting groove 314 and right oil collecting groove 315 are arranged at the intersection of the groove bottom of the gear shifting groove 31 and the left groove wall 312 and the right groove wall 313, respectively. The lubricating oil that spurts out from the radial oil hole 311 can be accumulated in the left oil collecting groove 314 and the right oil collecting groove 315, and can flow outward radially along the left groove wall 312 and the right groove wall 313 under the action of the centrifugal force of the rotating synchronizing ring gear 3.

[0023] An annular inner ring oil groove 317 with an inner opening connected with the radial oil hole 311 is arranged in the middle of the inner ring gear 316. In this way, the lubricating oil that is thrown out from the oil passing gap 16 can be accumulated in the inner ring oil groove 317, so as to ensure that the radial oil hole 311 connected therewith can be supplied with sufficient lubricating oil.

[0024] In order to ensure that the oil passing gap 16 has sufficient lubricating oil, a radial oil groove 211 is arranged on the joint gear side of the oil passing gap 16 Embodiment two

[0025] AsFigure 4 As shown, it is a further measure of example one, the outer periphery of the intermediate shaft 1 is provided with an annular outer ring oil groove 15 communicated with the radial oil hole one 13 outer outlet; axial oil groove 14 has multiple, all communicated with the outer ring oil groove 15; radial oil hole two 311 is provided with multiple, which are all communicated with the inner ring oil groove 317.

[0026] So actually make from the radial oil hole one 13 spout lubricating oil in order to meet the wheel shaft hole wall and the outer periphery of the intermediate shaft 1 between the joint of the driven wheel 2 can more to the oil gap 16 flow, still want to ensure that the gear shift groove 31 of sufficient oil supply.

[0027] The above examples are only used for more clearly describe the utility model, and can not be regarded as limiting the protection scope covered by the utility model, any equivalent form of modification should be regarded as falling into the protection scope covered by the utility model.

Claims

1. An oil passage structure for providing active lubrication to a shift slot of a synchronizing ring gear, comprising a main oil passage (12) arranged along an axial centerline of a countershaft (1), a radial oil hole (13) communicating between a combination portion of a hub hole wall of a hub (2) and an outer periphery of the countershaft (1), an axial oil groove (14) arranged along an axial direction on a surface of the countershaft (1) to communicate with an outer outlet of the radial oil hole (13), and an oil passing gap (16) between a combination spline (11) and a combination gear (21) communicated with the axial oil groove (14), characterized in that: Between the middle of the bottom of the synchronous ring gear shift groove (31) and the inner ring gear (316) is provided with radial oil hole two (311), when the synchronous ring gear (3) and the combination spline (11) and the combination gear (21) are connected to transmit torque, the radial oil hole two (311) is aligned with the oil gap (16).

2. The oil gallery structure for actively lubricating the shift grooves of a synchronizing ring gear according to claim 1, characterized in that: The left and right sides of the groove bottom of the shift groove (31) and the left groove wall (312) and the right groove wall (313) are respectively provided with radially concave annular left oil accumulation groove (314) and right oil accumulation groove (315).

3. The oil gallery structure for actively lubricating a shift slot of a synchronizing ring gear according to claim 1, characterized by: The middle of the inner ring gear (316) is provided with an annular inner ring oil groove (317) which is connected with the inner opening of the radial oil hole two (311).

4. The oil gallery structure for actively lubricating a shift slot of a synchronizing ring gear according to claim 1, characterized by: The outer periphery of the intermediate shaft (1) is provided with an annular outer ring oil groove (15) which is connected with the outer outlet of the radial oil hole one (13).

5. The oil gallery structure for actively lubricating a shift slot of a synchronizing ring gear according to claim 4, characterized by: The axial oil groove (14) has multiple, which are connected with the outer ring oil groove (15).

6. The oil gallery structure for actively lubricating a shift slot of a synchronizing ring gear according to claim 3, characterized by: The radial oil hole two (311) is provided with multiple, and the inner openings thereof are connected with the inner ring oil groove (317).

7. The oil gallery structure for actively lubricating a shift slot of a synchronizing ring gear according to claim 1, characterized by: The combination gear side of the oil gap (16) is provided with a radial oil groove (211).

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