CN202292589U

CN202292589U - Oil seal installation tool for engine

Info

Publication number: CN202292589U
Application number: CN2011203740993U
Authority: CN
Inventors: 左云; 周武明
Original assignee: Great Wall Motor Co Ltd
Current assignee: Great Wall Motor Co Ltd
Priority date: 2011-09-29
Filing date: 2011-09-29
Publication date: 2012-07-04
Anticipated expiration: 2021-09-29

Abstract

An oil seal installation tool for an engine comprises a location bottom plate, a pin seat, a top rod and a bolt, wherein the location bottom plate is in a triangular shape, the pin seat is fixedly installed at the half portion of the location bottom plate, the pin seat is of a step sleeve structure, a large threaded hole and a small threaded hole are respectively arranged on the bottom surface and the lateral wall of the pin seat, the top rod is of a step shaft structure, a long-strip-shaped groove is arranged on the external circular surface of the small-diameter portion which is sleeved in the pin seat, the large-diameter portion is axially arranged in a central hole assembled with the tail portion of a balance shaft of the engine, the bolt is assembled with the large threaded hole on the bottom surface of the pin seat, and the tail end of the bolt abuts against a small-diameter end face of the top rod. The oil seal installation tool for the engine uses characteristics of an existing structure to prevent an oil seal from cutting edges in an installation process through reasonable design, improves reliability of the oil seal, simultaneously has the advantages of being strong in practicability, low in processing cost and capable of being used repeatedly, can remarkably improve assembling efficiency of a rear oil seal of the balance shaft of the engine and reduces manufacturing cost of the engine.

Description

A kind of engine oil seal erecting tools

Technical field

The utility model relates to a kind of specific purpose tool, is particularly useful for the installation of car engine balance shaft Rear oil seal, belongs to technical field of engines.

Background technology

The assembly method that has the GDI balance shaft of engine Rear oil seal of trunnion shaft to the functional reliability and the production line beat control important influence of oil sealing, also is one of factor of impelling engine quality-improving and cost reduction.At present, the installation of on-board engine trunnion shaft Rear oil seal receives the narrow and small restriction in its locus of living in, and some manufacturing enterprises have adopted hollow sleeve to withstand oil sealing, the assembly technology that beats from the rear end.This assembly method is because of the oil sealing discontinuity; Can not be exactly with the oil sealing requirement position of packing into, and be easy to generate overlap, cause the leakage of oil consequence; In addition, this assembly method also exists the operation beat that is difficult to adapt to production line, the drawback that restricts the raising of efficiency of assembling.

The utility model content

The purpose of the utility model is the disadvantage that exists to present balance shaft of engine Rear oil seal installation method, provide a kind of simple in structure, volume is little, light weight, cost are low, can reusable engine oil seal erecting tools.

The said problem of the utility model realizes with following technical proposals:

A kind of engine oil seal erecting tools comprises positioning plate, key seat, push rod and bolt in the formation, said positioning plate shape triangular in shape; The key seat of half fixed installation above that, said key seat is the notch cuttype tube-in-tube structure, and large and small screwed hole is set respectively on its bottom surface and sidewall; Said push rod is the multidiameter structure; Its small diameter portion periphery is provided with the strip groove, and small diameter portion is sleeved on key seat inside, and the major diameter section axial is provided with the centre bore equipped with the balance shaft of engine afterbody; Said bolt and major thread hole, key seat bottom surface are equipped, and its tail end contacts on push rod minor diameter end face.

Above-mentioned engine oil seal erecting tools also comprises stop screw in the formation, said stop screw is fixed on the key seat corresponding position through thread connecting mode, and counter element is equipped on its tail end and the push rod.

Above-mentioned engine oil seal erecting tools also comprises alignment pin in the formation, said alignment pin is symmetrically arranged, and an end is fixed on the positioning plate, and the other end is connected with the engine cylinder-body pin-and-hole.

The utility model improves present balance shaft of engine Rear oil seal installation method, through the location of key seat, alignment pin and positioning plate, makes the oil sealing installation site accurate; Through stop screw push rod can only be slided vertically in key seat, formed anti-rotation, the anti-slip structure has guaranteed the globality of the utility model; Push rod small diameter portion and key seat inwall matched in clearance, smooth sliding under the bolt responsive to axial force has guaranteed that push rod major diameter part accurately is in place oil sealing under trunnion shaft afterbody guiding.In a word; The utility model has made full use of engine existing structure characteristic, through reasonable structural design, makes in the oil sealing installation process and can not produce the side cut phenomenon; Improved the functional reliability of oil sealing; Have the low and reusable characteristics of practical, processing cost simultaneously, can significantly improve the efficiency of assembling of balance shaft of engine Rear oil seal, reduce the engine manufacturing cost.

Description of drawings

Below in conjunction with accompanying drawing the utility model is described further.

Fig. 1 is the utility model structure chart;

Fig. 2 is the utility model blast structure chart;

Fig. 3 is the utility model axial section view;

Fig. 4 is the utility model duty cross section view.

Each label is among the figure: 1, bolt, 2, positioning plate, 3, key seat, 4, stop screw, 5, push rod, 5-1, groove, 6, alignment pin, 7, the trunnion shaft Rear oil seal, 8, cylinder body, 9, trunnion shaft.

The specific embodiment

Referring to Fig. 1, Fig. 2, Fig. 3, the utility model comprises positioning plate 2, key seat 3, push rod 5 and bolt 1, said positioning plate 2 shapes triangular in shape in constituting; The key seat 3 of half fixed installation above that, said key seat 3 is the notch cuttype tube-in-tube structure, and large and small screwed hole is set respectively on its bottom surface and sidewall; Said push rod 5 is the multidiameter structure; Its small diameter portion periphery is provided with strip groove 5-1, and small diameter portion is sleeved on key seat inside, and the major diameter section axial is provided with the centre bore equipped with balance shaft of engine 9 afterbodys; Said bolt 1 is equipped with major thread hole, key seat bottom surface, and its tail end contacts on push rod minor diameter end face.

Referring to Fig. 1, Fig. 3, Fig. 4, the utility model also comprises stop screw 4 in constituting, and said stop screw 4 is fixed on the key seat corresponding position through thread connecting mode, and counter element is equipped on its tail end and the push rod.

Referring to Fig. 1, Fig. 2, the utility model also comprises alignment pin 6 in constituting, and said alignment pin 6 is symmetrically arranged, and an end is fixed on the positioning plate 2, and the other end is connected with engine cylinder-body 8 pin-and-holes.

Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, the operation principle of the utility model is: positioning plate 2 is plate armature, is the main body of this instrument, rises and supports and positioning action; Key seat 3 interference are fitted on the positioning plate 2, and push rod 5 is led, locatees; Push rod 5 and key seat 3 matched in clearance, push rod 5 can axially move freely along key seat 3; Bolt 1 cooperates with key seat 3 bottom surface screwed holes, and turn bolt 1 makes push rod 5 receive uniform axial force, steadily slides vertically; Under the effect of stop screw 4, constantly guarantee that this instrument is an integral structure, and guarantee that push rod 5 does not rotate down in working order.

The utility model course of work is following: under the engine quiescent conditions trunnion shaft Rear oil seal 7 is being sleeved on the trunnion shaft 9 tail end conical surfaces; Key seat 3 inserts from cylinder body 8 back stomidiums with push rod 4, and alignment pin 6 is fitted in rear end of the cylinder block two dowel holes (engine original structure), and positioning plate 2 and cylinder body 8 rear end faces are fitted; Make the central lines of the central axis and the trunnion shaft Rear oil seal 7 of push rod 5; Swivel bolt 1, the axis of push rod 5 key seat 3 in the responsive to axial force lower edge of bolt 1 is to front slide, and trunnion shaft Rear oil seal 7 receives the promotion of push rod 5 end faces; Under evenly stressed situation, promptly be pressed into the assigned position of trunnion shaft 9 rear ends and cylinder body 8 cooperation places.

Claims

1. an engine oil seal erecting tools is characterized in that, comprises positioning plate (2), key seat (3), push rod (5) and bolt (1) in the formation; It is characterized in that said positioning plate (2) shape triangular in shape, the key seat (3) of half fixed installation above that; Said key seat (3) is the notch cuttype tube-in-tube structure; Large and small screwed hole is set respectively on its bottom surface and sidewall, and said push rod (5) is the multidiameter structure, and its small diameter portion periphery is provided with strip groove (5-1); Small diameter portion is sleeved on key seat inside; The major diameter section axial is provided with the centre bore equipped with balance shaft of engine (9) afterbody, and said bolt (1) is equipped with major thread hole, key seat bottom surface, and its tail end contacts on push rod minor diameter end face.

2. engine oil seal erecting tools according to claim 1; It is characterized in that; Also comprise stop screw (4) in the formation, said stop screw (4) is fixed on key seat (3) corresponding position through thread connecting mode, and it is equipped that its tail end and push rod (5) are gone up counter element.

3. engine oil seal erecting tools according to claim 2; It is characterized in that also comprise alignment pin (6) in the formation, said alignment pin (6) is symmetrically arranged; One end is fixed on the positioning plate (2), and the other end is gone up pin-and-hole with engine cylinder-body (8) and is connected.