CN201293090Y - Combination lubricating gear box - Google Patents

Combination lubricating gear box Download PDF

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Publication number
CN201293090Y
CN201293090Y CNU2008202165738U CN200820216573U CN201293090Y CN 201293090 Y CN201293090 Y CN 201293090Y CN U2008202165738 U CNU2008202165738 U CN U2008202165738U CN 200820216573 U CN200820216573 U CN 200820216573U CN 201293090 Y CN201293090 Y CN 201293090Y
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CN
China
Prior art keywords
chamber
oil
cavity
gear
box
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CNU2008202165738U
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Chinese (zh)
Inventor
李胜
胡高华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CRRC Qishuyan Institute Co Ltd
Changzhou Ruitai Engineering Machinery Co Ltd
Original Assignee
CRRC Qishuyan Institute Co Ltd
Changzhou Ruitai Engineering Machinery Co Ltd
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Application filed by CRRC Qishuyan Institute Co Ltd, Changzhou Ruitai Engineering Machinery Co Ltd filed Critical CRRC Qishuyan Institute Co Ltd
Priority to CNU2008202165738U priority Critical patent/CN201293090Y/en
Application granted granted Critical
Publication of CN201293090Y publication Critical patent/CN201293090Y/en
Anticipated expiration legal-status Critical
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Abstract

The utility model relates to a combined lubricating gearbox which belongs to the technical field of mechanical transmission lubrication. An input shaft of the gearbox is connected with a driving gear, and an output shaft is fixedly connected with a driven gear; a box body is formed by buckling and fixedly connecting an upper box body and a lower box body and is divided into a first cavity, a second cavity and a third cavity; the input shaft enters the box body by the third cavity, the driven gear is engaged with the driving gear in the first cavity, and both ends of the output shaft respectively penetrate out of the box body by the first cavity and the second cavity and then are fixedly connected with transmission parts; a communicated hole is arranged between the first cavity and the second cavity, and the third cavity and the first cavity are communicated by an oil tank arranged on a subdivision surface; a radial-plunger oil transfer pump is mounted at the bottom of the second cavity, an eccentric part for driving the radial-plunger oil transfer pump is fixed on a driven axle passing through the second cavity, and an oil outlet of the radial-plunger oil transfer pump is communicated with a part needing lubricating. The utility model not only can ensure reliable lubrication in high-speed and low-speed working conditions, but also obviously reduces the oil-stirring loss and the temperature rise of the box body in high-speed operation so as to prolong the service life of a bearing and a rubber sealing part.

Description

A kind of combined lubrication gear box
Technical field
The utility model relates to a kind of gear-box, and especially a kind of lubrication system of axle gear box is improved, and belongs to technical field of mechanical transmission lubrication.
Background technique
Understand according to the claimant, domestic existing rail grinding machine axle gear box is mainly by external import, and the speed during its operation only is per hour several kilometers, then can be up to 100km/h during the high speed traveling.The driving gear of gear-box and bearing lean on splash lubrication when the high speed traveling; And driving gear is by flooding system lubrication when low speed, and bearing then only depends on the oil film of original storage storage to be lubricated.In order to guarantee bearing lubricated when the low speed operation, the gear-box that has is taked structure as shown in Figure 1, driving gears not only at different levels are all taked flooding system lubrication, and the roller of bearing foots at different levels also all need immerse in the fluid, innage in the gear-box is more as a result, and when the high speed traveling, it is very big to cause gear to stir oily power loss, often cause the gear-box temperature too high, to all bringing adverse effect in working life of bearing and Sealing.
The model utility content
Main purpose of the present utility model is: at the shortcoming of above-mentioned prior art existence, proposing a kind of needs the more a spot of lubricant oil of dress can be when guaranteeing the high speed operation proper lubrication, the combined lubrication gear box that important lubricant housings also can sufficient lubrication when guaranteeing low cruise.
The further purpose of the utility model is: propose the combined lubrication gear box that positions such as a kind of gear when needing the more a spot of lubricant oil of dress can guarantee the high, low speed operation and bearing all obtain proper lubrication, thereby stir oily power loss and casing temperature rise when reducing high speed operation, prolong the working life of bearing and rubber seal.
In order to reach above main purpose, combined lubrication gear box of the present utility model comprises the casing that supports input shaft and output shaft, described input shaft is connected with driving gear, described output shaft and driven gear are connected, described casing is by last, involutory being connected of lower box forms, described lower box is divided into first by dividing plate, the second and the 3rd chamber, described input shaft enters casing by the 3rd chamber, described driven gear meshes with driving gear in first chamber, described output shaft two ends pass casing by first chamber and second chamber respectively, the radial plunger oil transfer pump is equipped with in the bottom in described second chamber, be fixed with the eccentric part that drives the radial plunger oil transfer pump on the output shaft by second chamber, the oil outlet of described radial plunger oil transfer pump leads to needs the lubricant housings.
In order to reach further purpose, the upper and lower casing split surface of combinations thereof lubrication gear box is by the shaft axis of input shaft and output shaft, dividing plate bottom between described first chamber and second chamber is provided with the intercommunicating pore that two chambeies are communicated, described the 3rd chamber and first chamber and second chamber isolate, and are shaped on oil groove on the same side box body split surface in described the 3rd chamber and first chamber.
During work, can inject more lubricant oil in the 3rd chamber, thereby realize the flooding system lubrication of input shaft spring bearing, and only need to inject less lubricant oil in first, second chamber.During high speed, driving gear pair, output shaft bearing, outer wall Bearing support driven gear spatter oil lubrication, and driving gear inner chamber place bearing is then lubricated by the oil transfer pump fuel feeding; During low speed, driven gear is by flooding system lubrication, and output shaft bearings at both ends, outer wall bearing, driving gear inner chamber place bearing are then lubricated by the oil transfer pump fuel feeding; Axle go into a spring bearing no matter during high, low speed all by flooding system lubrication.Because the utility model is by reasonable spaced apart teeth roller box lower box inner chamber, the combined lubrication mode that set up immersion oil, spatter oil, fuel feeding organically combines, proper lubrication when therefore only needing lubricant oil than prior art much less to guarantee low cruise, reduce and significantly reduce gear and stir power loss and the casing temperature rise that oil causes owing to the gear-box innage in the time of simultaneously can making high speed operation again, and then can prolong the working life of bearing and rubber seal.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 is the structural representation of existing axle gear box.
Fig. 2 is the structural representation of a preferred embodiment of the utility model.
Fig. 3 is Fig. 2 embodiment's a casing separation structure schematic representation.
Fig. 4 is the E-E sectional view of Fig. 2.
Fig. 5 is the F-F sectional view of Fig. 2.
Fig. 6 is that the D of Fig. 5 is to view.
Fig. 7 is the D-D revolved sectional view of Fig. 3.
Among the above figure: 1---casing, 2---the output axletree, 3---eccentric hoop, 4---rolling bearing, 5---plunger, 6---spring, 7---cylinder body, 8---land, 9---valve spring, 10---cone valve, 11---oil outlet tube, 12---lubricant oil, 13---allocation block, 14---the oil distributing pipe road, 14-1,14-2,14-3,14-4 all is oil distributing pipes, 15---and input shaft, 16---the engagement cover, 17---oil baffle, 18---driving gear, 19---collection chamber, 20---the axle box dish, 21,22,23,24 and 26,27 all is bearings, 25---and driven gear, 28---oil groove, 29---motor cabinet, 30---intercommunicating pore, 31---dividing plate.
Embodiment
Embodiment one
The combined lubrication axle gear box of present embodiment is applied to rail grinding machine, its structure as shown in Figure 2, input shaft 15 and output axletree 2 are supported on the bearing spider of casing 1.Casing 1 is formed by involutory being connected of upper and lower casing, and its split surface is by the shaft axis of input shaft and output axletree, and this casing as shown in Figure 3, and lower box is divided into the first chamber A, the second chamber B and the 3rd chamber C.Dividing plate lowest part between the first chamber A and the second chamber B is provided with the intercommunicating pore that two chambeies are communicated, and the 3rd chamber C and the first chamber A and the second chamber B isolate, and with the same side box body split surface in first chamber on be shaped on oil groove 28.
As shown in Figure 4, input shaft 15 enters casing by the 3rd chamber C, its inlet end inserts and is supported in the inner chamber of driving gear 18 by driving gear inner chamber place bearing 22, the two ends of driving gear 18 are supported in the first chamber A by outer wall bearing 21 and next door bearing 23 respectively, and driving gear 18 connects by engagement cover 16 with input shaft 15.The axle box dish 20 that is fixed on the casing 1 is equipped with in the outer end of outer wall bearing 21, the lug that the upper box sidewall of outer wall bearing 21 tops is cast with pit and extends to inner chamber, lug is close to the following eaves of pit mouth, both form collection chamber 19 with wall box, fixedly be lifted with man type oil baffle 17 on the upper box oil baffle fitting seat of driven gear side top, one side of this oil baffle extends to the last eaves of collection chamber 19 pit mouths, opposite side extends to the top of the 3rd chamber C, is shaped on the inner chamber place bearing 22 that is derived from the radial plunger oil transfer pump and leads to driving gear 18 respectively on the axle box dish 20, the oil circuit hole of outer wall bearing 21.Like this, more a spot of lubricant oil only need be injected in first chamber and second chamber, the 3rd chamber C can inject more lubricant oil, make the spring bearing 23 (being the next door bearing), 24 of input shaft in the 3rd chamber C, be in the flooding system lubrication state all the time, driving gear inner chamber place bearing 22, output shaft bearing 26,27, outer wall bearing 21 are mainly lubricated by the oil transfer pump fuel feeding when low speed, and driven gear is then by flooding system lubrication; During high speed, driving gear pair, output shaft bearing 26,27, outer wall bearing 21 mainly spatter oil lubrication by driven gear, and 22 on driving gear inner chamber place bearing is lubricated by the oil transfer pump fuel feeding.In addition, the lubricating oil that driven gear has splashed among the first chamber A during high speed can also flow to respectively among collection chamber 19 and the 3rd chamber C along man type oil baffle 17, can lubrication assistant driving gear 18 and inner chamber place bearing 22 thereof, the spline connecting piece, even damage in plunger oil transfer pump contingency like this, under the situation of fuel feeding lubrication failure, driving gear 18 and inner chamber place bearing 22 thereof still can obtain lubricated and be unlikely to damage, play the double insurance effect, can keep simultaneously the lubricant oil liquid level in the 3rd chamber C again, thereby and make that the spline connecting piece also obtains lubricating fully having prolonged its working life.
As shown in Figure 1, the fixing driven gear 25 that meshes with driving gear on the output axletree 2, two ends are connected with wheel respectively after passing casing 1 by the first chamber A and the second chamber C respectively.As shown in Figure 5, in the casing second chamber B bottom radial plunger oil transfer pump that is made of cylinder body 7, plunger 5 etc. is housed, wherein plunger 5 is installed in the cylinder body 7.The upper end expansion limit pressure holding of plunger 5 is on spring 6.The lower end of cylinder body 7 and land 8 are connected, and the cone valve 10 that is resisted against on the valve spring 9 is equipped with at its oil outlet place, and valve spring 9 is placed in the land 8.
The oil process cone valve 10 of its output and land 8, oil outlet tube 11 are towards needing the lubricant housings.Being fixed with throw of eccentric on the driven axletree 2 by the second chamber B is the eccentric hoop 3 of P, its lower edge constitutes the cam pair by the rolling bearing 4 that is installed in plunger 5 tops with plunger 5, this particular design replaces original sliding friction kind of drive with rolling friction, reduced running resistance, both satisfied the oil supply function of plunger pump, thereby the wearing and tearing that significantly reduced eccentric hoop 3 again prolong its working life, and other eccentric part such as also available eccentric cam of described eccentric hoop 3 or eccentric rotor replaces.As shown in Figure 6, allocation block 13 imports that are fixed on casing 1 top connect the oil outlet tube 11 that is derived from the radial plunger oil transfer pump, and a plurality of outlets are connected to the bearings at both ends of driven axletree and the oil circuit jointing of axle box dish 20 through oil distributing pipe 14-1,14-2,14-3,14-4 respectively.
This rail grinding machine need satisfy the needs of low speed operation and high speed traveling simultaneously.It is less that gear stirs oily power loss when making high speed operation, gearbox drive gear pair, bearing etc. needed the lubricant housings all can obtain lubricating fully reliably when splash lubrication was inoperative under the low speed operating mode simultaneously, the utility model reasonably is divided into the first chamber A, the second chamber B, the 3rd chamber C with gear case body, and a radial plunger oil transfer pump has been installed in the bottom of the second chamber B, utilize fuel feeding, spatter oil, the combination of flooding system lubrication, properly settled bearing, the lubrication problem of gear under various working staties; Less lubricant oil only need be stored in A chamber and B chamber, when high speed operation, produces splash lubrication, and A chamber bearing, gear are lubricated.During low speed, A chamber lubricant oil only produces the flooding system lubrication effect to gear.The lubricant oil of storing in the B chamber provides oil sources for the radial plunger oil transfer pump, and B chamber and A chamber have dividing plate to be separated by, and described dividing plate and casing integrally casting form, the dividing plate bottom is cast with intercommunicating pore, make A, B two chambeies communicate, and this intercommunicating pore preferably is positioned at lower box dividing plate bottom lowest part (referring to Fig. 7).Certainly, this dividing plate also can be provided with separately.Be contained in eccentric hoop on the axletree along with axletree rotates, the rolling bearing on the plunger is close to the eccentric hoop surface and along with rolling under the effect of length of spring compressed power, thereby plunger being produced move back and forth up and down causes the plunger cylinder volume to change and produce oil suction, oil transportation.Since the to-and-fro motion of plunger oil transfer pump, and oil outlet is fixed, and no matter therefore rail grinding car positive and negative direction motion, fuel-displaced direction is consistent all the time.The oil transfer pump oil outlet is connected on the allocation block with flexible pipe.Pick out the multichannel oil circuit by allocation block again, receive output shaft bearings at both ends and axle box dish oil circuit interface respectively, realize that fuel feeding is lubricated.Lubricant oil in the 3rd chamber C of lower box and the first chamber A, the second chamber B is spaced from each other, and the 3rd chamber C can store more lubricant oil, makes the spring bearing at input shaft two ends all adopt flooding system lubrication when high, low speed is moved.
In addition, owing to fixedly be lifted with the man type oil baffle on the upper box oil baffle fitting seat of the first chamber A, the oil-collecting lubricating oil path that the lubricant oil that sputters can also pass through collection chamber, axle box dish oil circuit and driving gear inner chamber composition lubricates driving gear and inner chamber place bearing thereof, spline connecting piece; The lubricant oil that while another part sputters compiles inflow casing the 3rd chamber C, constantly replenishes the lubricant oil among the 3rd chamber C.The lubricant oil that sputters can also be by being total to the oil groove of processing on the casing split surface of the same side at the first chamber A and the 3rd chamber C, constantly replenish the lubricant oil of the 3rd chamber C from other direction, thereby make the fluid of the 3rd chamber C obtain replenishing from the dual of oil baffle and oil groove.Therefore, even under the situation that radial plunger oil transfer pump fuel feeding lost efficacy, because it is lubricated to utilize the oil-collecting lubricating oil path of being made up of oil baffle, collection chamber, axle box dish oil circuit, driving gear inner chamber to carry out oil-collecting, plays the double insurance effect, the lubricated reliability of gear-box is greatly enhanced.
Experimental results show that, no matter high-speed gear, low cruise, the gear of whole gear-box, bearing can both obtain lubricated reliably, and the organic assembling structure in three chambeies, in the system of assurance sufficient lubrication basis, significantly reduce gear and stirred oily power loss, reduced the heating of gear-box, thereby prolonged the working life of each component of gear-box greatly.
In a word, present embodiment has following remarkable advantage:
1, the lower box of gear-box adopts A, B, C three chambeies to separate design, compared with prior art, has significantly reduced innage, therefore to stir oily power loss little for gear, when high speed operation, obviously reduced the temperature rise of casing, prolonged the life-span of bearing and rubber seal.
2, adopt immersion oil, spatter the mode that oil, fuel feeding combine, it is lubricated fully reliably to make gear-box can both obtain under the high, low speed operating mode.
3, the radial plunger oil transfer pump has solved under the high, low speed operating mode, and box bearing lubricates the big problem of difference.
4, solved the problem that some concealment part is difficult to lubricate in the gear-box by rational oil circuit design.
5, the plunger head of radial plunger oil transfer pump is installed rolling bearing, form the cam auxiliary driving with the eccentric part of output shaft fixed connection, this particular design replaces original sliding friction kind of drive with rolling friction, reduced running resistance, surface friction drag is little, thereby being reduced, the eccentric part abrasion prolonged its working life, and irrelevant into and out of the clockwise and anticlockwise of oily direction and eccentric part; In addition, eccentric part need not to provide power source along with output shaft rotates.
6, it is lubricated to utilize the oil-collecting lubricating oil path of being made up of oil baffle, collection chamber, axle box dish oil circuit, driving gear inner chamber to carry out oil-collecting, when gearbox high-speed moves and the lubricated performance simultaneously of radial plunger oil pump feed lubricating function separately, thereby have the double insurance effect, the lubricating reliability of gear-box is further enhanced.
In addition to the implementation, the utility model can also have other mode of executions.All employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.

Claims (9)

1. combined lubrication gear box, comprise the casing that supports input shaft and output shaft, described input shaft is connected with driving gear, described output shaft and driven gear are connected, described casing is by last, involutory being connected of lower box forms, it is characterized in that: described lower box is divided into first by dividing plate, the second and the 3rd chamber, described input shaft enters casing by the 3rd chamber, described driven gear meshes with driving gear in first chamber, described output shaft two ends pass casing by first chamber and second chamber respectively, the radial plunger oil transfer pump is equipped with in the bottom in described second chamber, be fixed with the eccentric part that drives the radial plunger oil transfer pump on the output shaft by second chamber, the oil outlet of described radial plunger oil transfer pump leads to needs the lubricant housings.
2. combined lubrication gear box according to claim 1, it is characterized in that: the split surface of described upper and lower casing is by the shaft axis of input shaft and output shaft, dividing plate bottom between described first chamber and second chamber is provided with the intercommunicating pore that two chambeies are communicated, described the 3rd chamber and first chamber and second chamber isolate, and are shaped on oil groove on the same side box body split surface in described the 3rd chamber and first chamber.
3. combined lubrication gear box according to claim 1 is characterized in that: described eccentric part lower edge constitutes the cam pair by the plunger of rolling bearing and described radial plunger oil transfer pump.
4. combined lubrication gear box according to claim 1 is characterized in that: the oil outlet of described radial plunger oil transfer pump leads to the bearings at both ends and the axle box dish oil circuit interface of output shaft respectively through shunting through allocation block.
5. combined lubrication gear box according to claim 2 is characterized in that: described intercommunicating pore is positioned at the lowest part of lower box dividing plate.
6. combined lubrication gear box according to claim 5, it is characterized in that: the inlet end of described input shaft inserts and is supported in the inner chamber of driving gear, the two ends of described driving gear are passed through outer wall bearing and next door bearings respectively in first chamber, by engagement cover and input shaft shaft coupling.
7, combined lubrication gear box according to claim 6, it is characterized in that: the upper box sidewall of described outer wall bearing top is shaped on pit, the following eaves of the described pit lug that extends internally out, described pit and lug and wall box form collection chamber, the upper box lifting man type oil baffle of described driven gear side top, one side of described man type oil baffle extends to collection chamber, and opposite side extends to the 3rd chamber.
8. according to claim 6 or 7 described combined lubrication gear boxes, it is characterized in that: the axle box dish that is fixed on the casing is equipped with in described outer wall bearing outer end, is shaped on the oil circuit that is derived from the radial plunger oil transfer pump and leads to driving gear inner chamber, outer wall bearing respectively on the described axle box dish.
9. combined lubrication gear box according to claim 8 is characterized in that: the output lubricant oil process cone valve of described radial plunger oil transfer pump and land and oil outlet tube lead to needs the lubricant housings.
CNU2008202165738U 2008-11-04 2008-11-04 Combination lubricating gear box Expired - Lifetime CN201293090Y (en)

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Application Number Priority Date Filing Date Title
CNU2008202165738U CN201293090Y (en) 2008-11-04 2008-11-04 Combination lubricating gear box

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Application Number Priority Date Filing Date Title
CNU2008202165738U CN201293090Y (en) 2008-11-04 2008-11-04 Combination lubricating gear box

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CN201293090Y true CN201293090Y (en) 2009-08-19

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101806354A (en) * 2010-04-30 2010-08-18 胡炜 Speed reducer
CN113324018A (en) * 2021-04-09 2021-08-31 浙江拓特工程设备有限公司 Automatic go up centrifugal fan case of lubricating oil
CN117345851A (en) * 2023-12-04 2024-01-05 山东豪迈数控机床有限公司 Gear transmission mechanism and machine tool spindle

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101806354A (en) * 2010-04-30 2010-08-18 胡炜 Speed reducer
CN101806354B (en) * 2010-04-30 2012-06-13 沃德(天津)传动有限公司 Speed reducer
CN113324018A (en) * 2021-04-09 2021-08-31 浙江拓特工程设备有限公司 Automatic go up centrifugal fan case of lubricating oil
CN113324018B (en) * 2021-04-09 2022-12-20 绍兴上虞拓特风机有限公司 Automatic go up centrifugal fan case of lubricating oil
CN117345851A (en) * 2023-12-04 2024-01-05 山东豪迈数控机床有限公司 Gear transmission mechanism and machine tool spindle

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C14 Grant of patent or utility model
GR01 Patent grant
AV01 Patent right actively abandoned

Granted publication date: 20090819

Effective date of abandoning: 20081104