High-reliability oil throwing type self-lubricating gearbox

Abstract

The utility model relates to a high-reliability oil-throwing type self-lubricating gear box which comprises a gear box body, lubricating oil forms a lubricating oil pool at the bottom in the gear box body, at least one oil-throwing gear is arranged in the gear box body, gear teeth at the bottom of the oil-throwing gear are immersed in the lubricating oil pool, and the two ends of each transmission shaft are rotationally supported in a bearing seat through bearings. Bearing mounting holes corresponding to the bearings are formed in the bearing seat, oil collecting bins corresponding to the bearings are arranged on the top outside the bearing seat, the bearings are provided with lubricating oil holes, annular grooves corresponding to the lubricating oil holes are formed in the bearing seat, oil inlet channels are arranged between the bottoms of the oil collecting bins and the annular grooves, and the oil collecting bins are communicated with the annular grooves through the oil inlet channels. Lubricating oil can circulate in the gearbox, and the risk of leakage and environmental pollution is avoided; lubricating oil does not contact with the external space of the gearbox, so that dust is prevented from entering the lubricating oil to cause failure of the lubricating oil; the service life is long, the cost is low and maintenance is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a gear box technology field for mining exploitation, specifically relates to a high reliability oil throwing type self -lubricating gear box. BACKGROUND

[0002] In the mining industry, gear box as indispensable parts, mostly for long time continuous operation, the working environment is bad. Gear box once breaks down, the repair difficulty is bigger. The bearing failure caused by the bearing oil shortage in the gear box is a common phenomenon. In order to avoid this phenomenon, usually set up power oil pump outside the gear box, lubrication pump is in the gear box to each bearing point and carries out lubrication. This structure has the following defects: 1, the oil of pump is easy to leak and cause environmental pollution;2, as the lubricating pipeline is easy to break, the dust in the environment is easy to enter the oil way through the broken pipeline, pollute the lubricating oil, cause the bearing failure, cause the gear box failure;3, set up power oil pump, increase production cost, and power oil pump has the service life, is easy to break down. Based on this, it is urgent to design a long service life, low cost, maintenance-free high reliability oil throwing type self-lubricating gear box. SUMMARY

[0003] The utility model discloses a high reliability oil throwing type self-lubricating gear box, and the bottom gear tooth of oil throwing gear is soaked in the lubricating oil pool in the bottom of gear box body, when the oil throwing gear rotates under stress, the outside gear tooth drives lubricating oil to splash to the oil collection warehouse, the inside of oil collection warehouse prevents the lubricating oil in the oil collection warehouse from overflowing through the oil baffle, the lubricating oil flows to the annular groove of bearing seat inner hole through the oil inlet channel at the bottom of oil collection warehouse, and then flows into the lubricating oil hole on the outside of bearing, and then flows into the inside of bearing, lubricates the bearing and carries away the heat in the inside of bearing, the lubricating oil flows back to the lubricating oil pool in the bottom of gear box body, realizes the circulation of lubricating oil in the inside of gear box, and there is no leakage and pollution environment risk.

[0004] The utility model discloses a high reliability oil throwing type self-lubricating gear box, and the bottom gear tooth of oil throwing gear is soaked in the lubricating oil pool in the bottom of gear box body, when the oil throwing gear rotates under stress, the outside gear tooth drives lubricating oil to splash to the oil collection warehouse, the inside of oil collection warehouse prevents the lubricating oil in the oil collection warehouse from overflowing through the oil baffle, the lubricating oil flows to the annular groove of bearing seat inner hole through the oil inlet channel at the bottom of oil collection warehouse, and then flows into the lubricating oil hole on the outside of bearing, and then flows into the inside of bearing, lubricates the bearing and carries away the heat in the inside of bearing, the lubricating oil flows back to the lubricating oil pool in the bottom of gear box body, realizes the circulation of lubricating oil in the inside of gear box, and there is no leakage and pollution environment risk.

[0005] A high reliability oil throwing type self-lubricating gear box, lubricating oil forms lubricating oil pool in the bottom of gear box body, at least one oil throwing gear in the gear box body, the bottom gear tooth of oil throwing gear is immersed in lubricating oil pool, each transmission shaft both ends are rotatably supported in bearing seat through bearing, the bearing installation hole is equipped with in bearing seat corresponding bearing, the top corresponding each bearing of bearing seat outside is equipped with oil collection warehouse, the bearing is equipped with lubricating oil hole, the annular groove is equipped with in bearing seat corresponding lubricating oil hole, and the oil inlet channel is equipped between oil collection warehouse bottom and annular groove, and oil inlet channel guides oil collection warehouse and annular groove.

[0006] Preferably, the oil collecting bin is composed of a box side wall, an oil collecting bin plate and an oil baffle, the box side wall, the oil collecting bin plate and the oil baffle are all welded with the top surface of the bearing seat, the oil collecting bin plate and the oil baffle are respectively arranged on the inner and outer sides of the box side wall, the box side wall is provided with an oil inlet corresponding to the oil collecting bin, and the oil baffle is one-to-one corresponding to the oil inlet.

[0007] Preferably, the ring groove is communicated with the bearing mounting hole, the ring groove surrounds the bearing, and the oil inlet channel introduces the lubricating oil in the oil collecting bin into the ring groove and then into the lubricating oil hole of the bearing.

[0008] Preferably, a plurality of transmission shafts are arranged in parallel in the gearbox box body, each transmission shaft is an input gear shaft, an intermediate gear shaft and an output shaft, the oil throwing gear is mounted on the intermediate gear shaft or the output shaft, the oil throwing gear located on the intermediate gear shaft is engaged with the input gear shaft, and the oil throwing gear located on the output shaft is engaged with the intermediate gear shaft.

[0009] Preferably, the bearings on the same side of the front and rear of the gearbox box body share one bearing seat, and the bearing seat is provided with a bearing mounting hole corresponding to each bearing.

[0010] Preferably, the gearbox box body is in an upper-lower split type, comprising an upper box body and a lower box body, the bearing seat is in a split type, the oil collecting bin is arranged on the upper box body, and the upper box body and the lower box body are connected through jointing bolts.

[0011] Preferably, each bearing is externally provided with a cover plate limiting the outer ring of the bearing, and the cover plate located on the shaft extension side of the input gear shaft and the output shaft is provided with a through hole facilitating the shaft extension to pass out.

[0012] Preferably, the side wall of the lower box body is provided with an oil mark corresponding to the lubricating oil pool, and the oil mark is lower than the bearing seat.

[0013] The utility model discloses the beneficial effect is:

[0014] The bottom gear teeth of the oil throwing gear are soaked in the lubricating oil pool at the bottom of the gearbox box body, when the oil throwing gear rotates under force, the outer gear teeth drive the lubricating oil to splash into the oil collecting bin, the inner side of the oil collecting bin prevents the lubricating oil in the oil collecting bin from overflowing through the oil baffle, the lubricating oil flows to the ring groove in the inner hole of the bearing seat through the oil inlet channel at the bottom of the oil collecting bin, and then flows into the lubricating oil hole on the outer side of the bearing, and then flows into the inside of the bearing, lubricates the bearing and carries away the heat in the inside of the bearing, the lubricating oil flows back to the lubricating oil pool at the bottom of the gearbox box body, realizes the circulation of the lubricating oil in the gearbox, and has no leakage and pollution risk to the environment.

[0015] The lubricating oil does not contact with the external space of the gearbox, and dust is prevented from entering the lubricating oil to cause the lubricating oil to be invalid.

[0016] Long service life, low cost and maintenance-free. DRAWINGS

[0017] Figure 1 It is a front view of the high-reliability oil throwing type self-lubricating gear box.

[0018] Figure 2 It is Figure 1 A-A sectional view.

[0019] Figure 3 It is Figure 1 B-B sectional view.

[0020] Figure 4 It is Figure 2 Local enlarged view.

[0021] Figure 5 It is Figure 2 C-C sectional view (the bearing and the intermediate gear shaft are not drawn in the figure).

[0022] Among them:

[0023] Gear box body 1; bearing seat 1.1; bearing mounting hole 1.1.1; ring groove 1.1.2; oil inlet channel 1.1.3; box side wall 1.2; oil inlet 1.2.1; input gear shaft 2; intermediate gear shaft 3; output shaft 4; lubricating oil pool 5; oil throwing gear 6; bearing 7; lubricating oil hole 7.1; oil collecting bin 8; oil collecting bin plate 8.1; oil baffle 8.2; cover plate 9; oil mark 10. Specific implementation

[0024] See Figures 1-5The utility model relates to a high reliability oil throwing type self -lubricating gear case, including gear case body 1, a plurality of transmission shafts are established in parallel in gear case body 1, and each transmission shaft is input gear shaft 2, intermediate gear shaft 3 and output shaft 4 respectively, and lubricating oil forms lubricating oil pool 5 at the bottom in gear case body 1, and gear case body 1 has at least one oil throwing gear 6, the bottom gear tooth of oil throwing gear 6 is immersed in lubricating oil pool 5, oil throwing gear 6 is installed on intermediate gear shaft 3 or output shaft 4, wherein the oil throwing gear 5 on intermediate gear shaft 3 is engaged with input gear shaft 2, and the oil throwing gear on output shaft 4 is engaged with intermediate gear shaft 3, and each transmission shaft both ends is rotatably supported in bearing seat 1.1 through bearing 7, bearing seat 1.1 is equipped with bearing mounting hole 1.1.1 in correspondence with bearing 7 in it, and the top of bearing seat 1.1 outside is equipped with oil collecting bin 8 in correspondence with each bearing, oil collecting bin 8 is composed of tank side wall 1.2, oil collecting bin board 8.1 and oil baffle 8.2, tank side wall 1.2, oil collecting bin board 8.1 and oil baffle 8.2 are all welded with bearing seat 1.1 top surface, and oil collecting bin board 8.1 and oil baffle 8.2 are set respectively on the inside and outside of tank side wall 1.2, tank side wall 1.2 is equipped with oil inlet 1.2.1 in correspondence with oil collecting bin 8, oil throwing gear 6 drives the lubricating oil in lubricating oil pool 5 to splash upwards, enters oil collecting bin 8 through oil inlet 1.2.1, and the inside of oil collecting bin 8 is blocked by oil baffle 8.2, and oil baffle 8.2 is in one-to-one correspondence with oil inlet 1.2.1, and the splashed lubricating oil is stored in oil collecting bin 8, to prevent lubricating oil from not entering bearing 7 and directly falling back lubricating oil pool 5.

[0025] The bearing 7 is provided with a lubricating oil hole 7.1, the bearing seat 1.1 is provided with a ring groove 1.1.2 in correspondence with the lubricating oil hole 7.1, the ring groove 1.1.2 is communicated with the bearing mounting hole 1.1.1, the ring groove 1.1.2 surrounds the bearing, an oil inlet channel 1.1.3 is arranged between the bottom of the oil collecting bin 8 and the ring groove 1.1.2, the oil inlet channel 1.1.3 leads the lubricating oil in the oil collecting bin 8 into the ring groove 1.1.2, and then the lubricating oil enters the lubricating oil hole 7.1 of the bearing 7 to lubricate the bearing.

[0026] The bearings on the same side of the front and rear of the gear case body 1 share a bearing seat 1.1, the bearing seat 1.1 is provided with bearing mounting holes 1.1.1 in correspondence with each bearing, thereby reducing the welding processing difficulty of the gear case body.

[0027] The gear case body 1 is in an upper-lower split type, comprising an upper case and a lower case, the bearing seat 1.1 is in a split type, the oil collecting bin 8 is arranged on the upper case, the upper case and the lower case are connected by closing case bolts, each bearing 7 is externally provided with a cover plate 9, the cover plate 9 is used for limiting the outer ring of the bearing, the cover plate 9 located on the shaft extension side of the input gear shaft 2 and the output shaft 4 is provided with a through hole for facilitating the shaft extension to pass out.

[0028] The side wall of the lower housing is provided with an oil level indicator 10 corresponding to the lubricating oil sump 5, and the oil level indicator 10 is lower than the bearing seat 1.1.

[0029] Working principle:

[0030] The bottom teeth of the oil slinger 6 are immersed in the lubricating oil pool 5 at the bottom of the gearbox housing 1. When the oil slinger 6 is rotated under force, the outer teeth drive the lubricating oil to splash onto the oil collection chamber 8. The inner side of the oil collection chamber 8 is protected by an oil baffle 8.2 to prevent the lubricating oil in the oil collection chamber 8 from overflowing. The lubricating oil flows through the oil inlet channel at the bottom of the oil collection chamber 8 to the annular groove of the bearing housing inner hole, and then flows into the lubricating oil hole 7.1 on the outer side of the bearing 7 before flowing into the bearing interior, lubricating the bearing and carrying away the heat inside the bearing. The lubricating oil flows back to the lubricating oil pool at the bottom of the gearbox housing, forming a circulation.

[0031] In addition to the above embodiments, this utility model also includes other implementation methods. All technical solutions formed by equivalent transformation or equivalent substitution should fall within the protection scope of the claims of this utility model.

Claims

1. A high-reliability oil-slinging self-lubricating gearbox, characterized in that: The gearbox includes a gearbox housing. Lubricating oil forms a lubricating oil pool at the bottom of the gearbox housing. There is at least one oil-throwing gear inside the gearbox housing. The bottom teeth of the oil-throwing gear are immersed in the lubricating oil pool. Each drive shaft is rotatably supported at both ends by bearings in bearing housings. Bearing housings have bearing mounting holes corresponding to the bearings. Oil collection chambers are provided on the top of the bearing housings corresponding to each bearing. Each bearing has its own lubricating oil hole. The bearing housings have an annular groove corresponding to the lubricating oil hole. An oil inlet channel is provided between the bottom of the oil collection chamber and the annular groove, and the oil inlet channel connects the oil collection chamber and the annular groove.

2. The high-reliability oil-slinging self-lubricating gearbox according to claim 1, characterized in that: The oil collection tank consists of a tank side wall, an oil collection tank plate, and an oil baffle plate. The tank side wall, the oil collection tank plate, and the oil baffle plate are all welded to the top surface of the bearing seat. The oil collection tank plate and the oil baffle plate are respectively set on the inner and outer sides of the tank side wall. The tank side wall is provided with an oil inlet corresponding to the oil collection tank, and the oil baffle plate corresponds to the oil inlet one by one.

3. The high-reliability oil-slinging self-lubricating gearbox according to claim 1, characterized in that: The annular groove is connected to the bearing mounting hole. The annular groove surrounds the bearing, and the oil inlet channel introduces the lubricating oil in the oil collection tank into the annular groove, and then into the bearing's own lubricating oil hole.

4. A high-reliability oil-slinging self-lubricating gearbox according to claim 1, characterized in that: The gearbox housing contains multiple parallel transmission shafts, each of which is an input gear shaft, an intermediate gear shaft, and an output shaft. The oil slinger is mounted on either the intermediate gear shaft or the output shaft. The oil slinger located on the intermediate gear shaft meshes with the input gear shaft, and the oil slinger located on the output shaft meshes with the intermediate gear shaft.

5. A high-reliability oil-slinging self-lubricating gearbox according to claim 1, characterized in that: The bearings on the same side of the front and rear of the gearbox housing share a common bearing housing, and the bearing housing is provided with bearing mounting holes corresponding to each bearing.

6. A high-reliability oil-slinging self-lubricating gearbox according to claim 1, characterized in that: The gearbox housing is a split type, including an upper housing and a lower housing. The bearing housing is a split type. The oil collection tank is located on the upper housing. The upper housing and the lower housing are connected by a connecting bolt.

7. A high-reliability oil-slinging self-lubricating gearbox according to claim 1, characterized in that: Each bearing is provided with a cover plate that limits the outer ring of the bearing. The cover plate located on the shaft extension side of the input gear shaft and the output shaft is provided with a through hole to facilitate the shaft extension to pass through.

8. A high-reliability oil-slinging self-lubricating gearbox according to claim 6, characterized in that: The side wall of the lower housing is provided with an oil level gauge corresponding to the lubricating oil sump, and the oil level gauge is lower than the bearing seat.

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