CN2132038Y

CN2132038Y - Sealing units for worn-out journels of cranksnaft

Info

Publication number: CN2132038Y
Application number: CN 92228648
Authority: CN
Inventors: 叶仕清
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-07-21
Filing date: 1992-07-21
Publication date: 1993-05-05
Anticipated expiration: 2002-07-21

Abstract

The utility model discloses a sealing device for worn-out neck end of crankshaft in which oil seals of different types are utilized. The utility model has the advantages that a cylinder body is of no need to be dismounted at the time of overhauling, cost of overhaul is 1/40-1/50 of normal method, and overhauling time is 1/100-1/150 of the normal method. The device is of labor saving and material saving, and the utility model both maintain the cooperation precision and seal effect of primary shaft journal. A sealing cycle can also achieve primary cycle, and the utility model increases the service life of the crankshaft and the transporting ability of an automobile.

Description

Sealing units for worn-out journels of cranksnaft

A kind of seal arrangement that relates to after automobile engine crankshaft neck end weares and teares.

The oil-sealing arrangement of widely used automobile engine crankshaft axle journal in communications and transportation, the automobile of general automobile and the mean quality crankshaft journal end of being everlasting tumbles in axle sleeve to prevent that the axle journal end is because of the wearing and tearing leakage of oil, after axle sleeve may wear to a certain degree, renew and to use and reach the oil sealing effect substantially, but in the low high quality motor car engine of high-power and maintenance rate, the oil sealer of axle journal end rubber oil sea commonly used is finished, neither, can reach efficient long-term oil sealing effect again because of friction and circular runout loss engine power., motor is in long-term work, and the high temperature high pressure oil in the cylinder block and the fine impurity of generation are inevitable in the long term wear of rubber oil sea and axle journal end.Usually, when the motor operation reaches more than 500,000 kilometers, the axle journal of bent axle and the contact position of oil sealing will grind down the deep trouth about 1～2mm, make oil sealing lose the oil sealing effect, adopt and to tighten up oil sealing and seal spring and all do not prove effective, leakage of oil is more serious, engine lubricating oil leaks in clutch assembly from the axle journal end, cause the early stage damage of parts such as clutch assembly, clutch plate, the axle journal end is dark more by the groove under grinding, and leakage of oil is serious more.If the driver goes out and checks before the car half-heartedly, result's clutch is under steam often skidded, and makes the automobile variable speed difficulty, can't speed change under the state of emergency or lose power or bearing liner burnout, and the result causes the traffic accident of car crash easily.So when generally the maintenance man was to micro-leakage of oil, just decision needed anxious parking maintenance, otherwise imagination is not surveyed in the loss that causes.Use at present all various types of oil sealings or the former model oil sealing can't oil sealing, has only the conventional method of restoring the axle journal deep trouth that adopts, with processes such as spraying plating, brush platings, or change bent axle, consequently the axle journal precision can't reach primary standard, quicken the Repair cycle, when highi degree of accuracy and high-quality imported auto axle journal are worn into deep trouth and need be changed bent axle, need a large amount of foreign exchanges, be difficult to purchase its original paper sometimes, the result causes car to move, even scraps.

The conventional method of the oil sealing problem behind the groove is worn in solution because of axle journal, owing to need the dismounting of stopping, when other parts of motor are intact, tear open and lift after motor, gearbox, flywheel, oil sealing and the cylinder block maintenance machining crankshafts and will cause and stopped 1 month, cause the parking financial loss, more than 20,000 yuan of meter such as overhaul expense is if the economic loss that the replacing bent axle then causes can reach more than 30,000 yuan, slight axle journal oil sealer, the loss that causes is real in considerable.The purpose of this utility model is can't finish under the condition of oil sealing at existing oil sealer after axle journal is worn into groove, provide a kind of and need not dismantle cylinder block, utilize existing oil sealing material, do not influence its axle journal quality of fit, material saving, saving of labor, only need the oil sealer that time of conventional method expense 1/40～1/50 and conventional method 1/100～1/150 just can make automobile come into operation, and the wear-resisting cycle of this device, also the cycle that promptly need overhaul can reach as preceding.

Reaching the technological scheme that the above object adopts is: with the oil sealing eyelet 1 on the crank shaft oil seal by the L shaped even straight in-line that is, excise the some of A end on the oil deflector then, making crank shaft oil seal be moved to the oil sealing rubber position that contacts with the axle journal groove on the crank shaft oil seal to the direction of oil deflector leaves cell body and forms new oil seal structure, make an oil sealing eyelet 2 in addition, and will enclose riveted joint or welding or be bonded on the even straight oil sealing eyelet 1, just can constitute the seal arrangement after automobile crane neck end weares and teares, this device can repeat to improve repeatedly, every improvement once, oil sealing to the displacement of cylinder body direction once, the ultimate range of its displacement is to produce the axle journal groove to bent axle, and this device can use on the motor car engine of all kinds with the oil sealing sealing crankshaft journal.

The utility model is compared the advantage that is had with the prior art scheme be not overhaul to dismantle cylinder body, the saving of labor, economize material, easy for installation and applicability is wide, the cost of overhaul is 1/40～1/50 of a conventional method, repair time is 1/100～1/150 of a conventional method, after being installed, this device both can reach the precision that former motor axle journal cooperates, do not influence its power, can guarantee sealing effect and repair cycle basically identical again, improve the transport capacity and the service life of automobile.

The accompanying drawing and the drawing of this device are described as follows:

Fig. 1 is a crankshaft journal oil seal structure sectional view.

Fig. 2 is the structure sectional view behind the journal wear.

Fig. 3 is the seal arrangement behind the journal wear.

Flywheel keyhole (1), bent axle (2), flywheel (3), axle journal (4), crank shaft oil seal (5), oil deflector (6), cylinder block (7), axle journal groove (8), rubber (9) among the figure, seal spring (10), oil sealing eyelet 1(11) and oil sealing eyelet 2(12).

Specific embodiment of the utility model is, when motor car engine is moved more than 400,000 kilometers, axle journal (4) wearing and tearing produce axle journal groove (8), sealing spring shortens, sealability is reduced and the generation leakage of oil, parking maintenance, bolt on the dismounting flywheel keyhole (1), take off flywheel (3), take out crank shaft oil seal (5) and oil deflector (6), A tip cut-off certain-length with oil deflector (6), with oil sealing eyelet 1(11) by L shaped even be in-line directly, make crank shaft oil seal (5) direction displacement 5mm in cylinder block (7), make the rubber (9) that contacts with axle journal groove (8) above it remove deep trouth, seal spring (10) and increase, form new sealing configuration, make and oil sealing eyelet 1(11 of metallic material) the consistent oil sealing eyelet 2(12 of size dimension), and riveted joint or welding or be bonded in even straight oil sealing eyelet 1(11) on, the seal arrangement after new crankshaft journal end weares and teares is just made.Oil deflector (6) is installed in reverse operation ... to bolt of flywheel, automobile just can come into operation, and this device can use on the dissimilar motor car engines of utilizing oil sealing the repeatedly transformation of the way to reuse.

Claims

1, seal arrangement after a kind of automobile crane neck end wearing and tearing, this device is made up of crank shaft oil seal (5) and oil deflector (6), it is characterized in that: directly is in-line with the oil sealing eyelet on the crank shaft oil seal (5) 1 (11) by L shaped sparing, cut oil deflector (6) and go up the some of A end, making crank shaft oil seal (5) be moved to rubber (9) position that contacts with axle journal groove (8) on the crank shaft oil seal (5) to the direction of oil deflector (6) leaves cell body and constitutes new oil seal structure, make an oil sealing eyelet 2 (12) and welding or riveted joint in addition or be bonded on the even straight oil sealing eyelet 1 (11), promptly constituted the seal arrangement after the wearing and tearing of automobile crane neck end.

2, according to the crank shaft oil seal (5) of the seal arrangement after the wearing and tearing of the described automobile crane neck of claim 1. end, it is characterized in that: the maximum displacement distance of this crank shaft oil seal (5) is that axle journal groove (8) is to bent axle (2).

3, according to the seal arrangement after the wearing and tearing of the described crankshaft journal end of claim 1., it is characterized in that: this device can use on various types of motor car engines of utilizing oil sealing sealing crankshaft journal (4).