CN202292035U - Tool for installing camshaft bush of heavy-duty diesel engine - Google Patents

Tool for installing camshaft bush of heavy-duty diesel engine Download PDF

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Publication number
CN202292035U
CN202292035U CN2011203173803U CN201120317380U CN202292035U CN 202292035 U CN202292035 U CN 202292035U CN 2011203173803 U CN2011203173803 U CN 2011203173803U CN 201120317380 U CN201120317380 U CN 201120317380U CN 202292035 U CN202292035 U CN 202292035U
Authority
CN
China
Prior art keywords
diesel engine
cam shaft
joint
shaft bush
drift
Prior art date
Application number
CN2011203173803U
Other languages
Chinese (zh)
Inventor
任少华
黄进成
Original Assignee
广西玉柴机器股份有限公司
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Filing date
Publication date
Application filed by 广西玉柴机器股份有限公司 filed Critical 广西玉柴机器股份有限公司
Priority to CN2011203173803U priority Critical patent/CN202292035U/en
Application granted granted Critical
Publication of CN202292035U publication Critical patent/CN202292035U/en

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Abstract

The utility model discloses a tool for installing a camshaft bush of a heavy-duty diesel engine. The tool for installing the camshaft bush of the heavy-duty diesel engine comprises a pressing rod and a guide sleeve sleeved on the pressing rod, wherein the pressing rod comprises a joint, a punch and a connecting pipe for connecting the joint and the punch; a bush positioning part is arranged on the joint; one end of the punch is provided with stop bulges and guide keys arranged in a guide key groove which axially extends; a guide groove is formed inside the guide sleeve; and when the pressing rod is inserted into the guide sleeve, the guide keys of the punch stretch into the guide groove of the guide sleeve and are limited through the stop bulges. By the tool for installing the camshaft bush of the heavy-duty diesel engine, the installation phase and installation depth of the camshaft bush on the diesel engine are guaranteed; and due to special structures, the installation accuracy of the camshaft bush on the diesel engine is greatly improved, rework due to low installation accuracy of the camshaft bush and the rejection rate of the camshaft bush are reduced, the production cost is reduced, and the production efficiency is improved.

Description

Large diesel engine cam shaft bush erecting tools

Technical field

The utility model relates to the large diesel engine field, particularly a kind of large diesel engine cam shaft bush erecting tools.

Background technology

Make the field at diesel engine, especially on large diesel engine is made, because the particularity of side-mounted camshaft structure; There is not special-purpose, large-scale cam shaft bush press-loading device; Normally draw agate device (not shown), can alleviate the producer's labour intensity to a great extent by hydraulic pressure, but on the installation accuracy of cam shaft bush 6; Comprise installation phase place and the fitting depth of cam shaft bush on diesel-engine body, depend on producer individual's level of skill fully.But also need two producers to cooperatively interact; Wherein one man operation hydraulic pressure draws agate; The fitting depth of control cam shaft bush 6 on diesel engine; Another people is by the installation phase place of the oilhole of the camshaft hole on the diesel-engine body 7 72 71 control cam shaft bushes 6 on diesel engine, could guarantee that oilhole 61 (shown in Fig. 2 a and Fig. 2 b) and the oilhole 71 (shown in Fig. 1 a, Fig. 1 b and Fig. 1 c) of the camshaft hole 72 on the diesel-engine body 7 on the cam shaft bush 6 aligns fully.

There is significant disadvantages in above cam shaft bush installing: the installation accuracy of (1) cam shaft bush 6 is poor: installation phase place and the fitting depth of cam shaft bush 6 on diesel engine is owing to be to rely on artificial control; Lack stopping means, the installation accuracy of cam shaft bush 6 on diesel engine is difficult to guarantee; (2) production efficiency is low, production cost is high: mounting cam neck bush 6 needs two producer's cooperations, could accomplish, because the cam shaft bush installation accuracy is low; The underproof cam shaft bush of installation accuracy is just many; Need do over again, after these cam shaft bushes adopt special tooling from diesel-engine body, to take out, will scrap; Can not use again, must adopt new cam shaft bush to reinstall.

The utility model content

The technical problem that the utility model solves provides the large diesel engine cam shaft bush erecting tools that a kind of installation accuracy is high, production efficiency is high.

For achieving the above object, the utility model provides a kind of large diesel engine cam shaft bush erecting tools, comprising: depression bar be sleeved on the fairlead on the depression bar; Depression bar comprises: joint and drift; And the tube connector of jointing and drift, having the lining location division on the joint, an end of drift has stopper protrusion and the feather key that is arranged in the guiding keyway that extends vertically; Fairlead inside has gathering sill; When depression bar penetrated fairlead, the feather key of drift stretched into the gathering sill of fairlead, and spacing through stopper protrusion.

Further, the lining location division is the pressing plate that is arranged on the joint side, and pressing plate has the cylindrical slot of receiving in the top, is provided with in the cylindrical slot and receives spring-supported steel ball.

Further, pressing plate is two, is mutually the side that is arranged on said joint of 180 degree relatively.

Further; Fairlead comprises: cylindrical flange and the reinforcing bar annulus that is fixed on cylindrical flange one end; The annular stop of receiving in the port of the other end of cylindrical flange has radially, fairlead pass through bolt that through hole is fixed to the camshaft hole port on the annular stop.

Further, have a plurality of spacing preiections that cooperate with stopper protrusion in the cylindrical flange.

Further, joint and drift are received on the tube connector through the positioning spiro pit tack welding respectively.

Technical scheme according to the utility model; Owing to guarantee installation phase place and the fitting depth of cam shaft bush on diesel engine by large diesel engine cam shaft bush erecting tools; These special constructions have increased substantially the installation accuracy of cam shaft bush on diesel engine; Reduce scrapping of the work of doing over again that causes because of cam shaft bush installation accuracy difference and cam shaft bush, reduced production cost, improved production efficiency.

Description of drawings

Fig. 1 a is the main TV structure sketch map of existing large diesel engine body;

Fig. 1 b is the horizontal complete section structural representation of existing large diesel engine body;

Fig. 1 c is the sectional structure sketch map of the A-A direction of Fig. 1 b;

Fig. 2 a and Fig. 2 b look and the side-looking structural representation for the master according to the large diesel engine cam shaft bush of the utility model;

Fig. 3 a is the structural representation according to the depression bar of the large diesel engine cam shaft bush erecting tools of the utility model;

Fig. 3 b is the sectional structure sketch map of the B-B direction of Fig. 3 a;

Fig. 4 a and Fig. 4 b look and axial sectional structure sketch map for the master according to the joint of the large diesel engine cam shaft bush erecting tools of the utility model;

Fig. 5 a is the main TV structure sketch map according to the joint pressing plate of the large diesel engine cam shaft bush erecting tools of the utility model;

Fig. 5 b is the sectional structure sketch map of the C-C direction of Fig. 5 a;

Fig. 6 a is the main TV structure sketch map according to the drift of the large diesel engine cam shaft bush erecting tools of the utility model;

Fig. 6 b is the sectional structure sketch map of the D-D direction of Fig. 6 a;

Fig. 7 a and Fig. 7 b look and axial sectional structure sketch map for the master according to the tube connector of the large diesel engine cam shaft bush erecting tools of the utility model;

Fig. 8 a and Fig. 8 b look and the plan structure sketch map for the master according to the fairlead of the large diesel engine cam shaft bush erecting tools of the utility model.

The specific embodiment

Below in conjunction with accompanying drawing, the specific embodiment of the utility model is described in detail, but the protection domain that is to be understood that the utility model does not receive the restriction of the specific embodiment.

Referring to Fig. 3 a and Fig. 3 b, this large diesel engine cam shaft bush erecting tools comprises: depression bar 5 be sleeved on the fairlead 4 on the depression bar 5, depression bar 5 comprises: joint 1 and drift 2, and the tube connector 3 that connects this joint 1 and drift 2.Wherein, shown in Fig. 4 a and Fig. 4 b, joint 1 is cylindric; The middle part has stop lug 11; Right-hand member is attachment plug 12, and the side of attachment plug 12 offers the positioning spiro pit (not shown), and the side up and down of left end is relatively set with two pressing plates 13; The middle part of this pressing plate 13 has the cylindrical slot of receiving in the top 131; The cylindrical slot 131 of two pressing plates 13 is mutually 180 degree, is provided with in the cylindrical slot 131 and receives spring-supported steel ball 132, and steel ball 132 pushes against the port of cylindrical slot 131 under the effect of spring; Only there is part to spill this port; The two ends of this pressing plate 13 are fixed on (shown in Fig. 5 a and Fig. 5 b) on the joint 1 through sunk screw, and the cylindrical slot 131 of two pressing plates 13 is mutually 180 degree makes same depression bar 5 cooperate different fairleads 4 can realize the installation of two grades of symmetrical on diesel engine cam shaft bushes is reduced cost.

Shown in Fig. 6 a and Fig. 6 b, drift 2 is a column, and left end (upper end among the figure) has attachment plug 21; The side of attachment plug 21 offers positioning spiro pit 211; Right-hand member (lower end among the figure) has stopper protrusion 22, and stopper protrusion 22 is three, and the right-hand member that is evenly distributed on drift 2 is circumferential; Drift 2 also has the guiding keyway 23 that extends along right-hand member left, and feather key 24 is arranged in this guiding keyway 23.

Shown in Fig. 7 a and Fig. 7 b; Tube connector 3 can adopt seamless steel pipe; The right ends mouth is distributed and is provided with joint mounting groove 31 and drift mounting groove 32; Offer the positioning spiro pit 311 that runs through on the sidewall of joint mounting groove 31, offer the positioning spiro pit 321 that runs through on the sidewall of drift mounting groove 32;

During assembling depression bar 5, behind the attachment plug 12 insertion joint mounting grooves 31 with joint 1, the positioning spiro pit that passes positioning spiro pit 311 and attachment plug 12 through screw positions, and at last joint 1 is welded on the tube connector 3 earlier; Drift 2 is installed again, behind the attachment plug 21 insertion drift mounting grooves 32 with drift 2, is passed positioning spiro pit 321 through screw and position earlier, at last drift 2 is welded on the tube connector 3 with positioning spiro pit 211.Come erection joint 1 and drift 2 through positioning spiro pit on the tube connector 3 311 and positioning spiro pit 321; Can guarantee that steel ball 132 in joint 1 top board 13 installs the guiding keyway 23 center angulations of axis and drift 2, so the oilhole 61 that guarantees to be enclosed within the cam shaft bush 6 on the joint 1 behind the pressure people just in time with diesel-engine body 7 on camshaft hole oilhole 71 align (referring to Fig. 1 a, 1b and 1c) fully.

Shown in Fig. 8 a and Fig. 8 b; Fairlead 4 is a weldment, comprising: cylindrical flange 41 and the reinforcing bar annulus 42 that is welded on cylindrical flange 41 right-hand member excircles, the annular stop that the left end of cylindrical flange 41 (lower end among the figure) mouth is received in having radially; The top of annular stop has locating surface A; And be evenly equipped with through hole 411, and the inwall of cylindrical flange 41 is welded with the spacing preiection 412 that a plurality of edges circumferentially are uniformly distributed with, and the upper end of one of them spacing preiection 412 offers axially extended gathering sill 413.

Can find out that in conjunction with Fig. 1 a, 1b and 1c when press-fiting cam shaft bush 6, elder generation is fixed on the through hole 411 that fairlead 4 usefulness hexagon socket cap head screws pass annular end face on the end face of camshaft holes of diesel engine 72; According to bay in the elder generation, progressively two ends select appropriate length cam shaft bush erecting tools to install successively forwards, backwards, and concrete steps are: the joint 1 with depression bar 5 pushes fairlead 4 earlier; Get into diesel-engine body 7, when feather key 24 parts of drift 2 get into the gathering sill 413 on the fairlead 4, the inner chamber cover of cam shaft bush 6 from diesel-engine body 7 installed on the joint 1; Make steel ball 132 on 61 pairs of pressure plates 13 of oilhole on the cam shaft bush 6, the oilhole 61 that the oilhole 61 that steel ball 132 is upspring under the effect of spring and blocked cam shaft bush 6, the installation axis of steel ball 132 and guiding keyway 23 center angulations can guarantee cam shaft bush 6 after pressing the people just in time with diesel-engine body 7 on camshaft hole oilhole 71 align fully; Thereby guarantee the installation phase place of cam shaft bush 6, guarantee also that simultaneously cam shaft bush 6 does not rotate in press-fiting process, connect three claws that hydraulic pressure draws the agate (not shown) then to the reinforcing bar annulus 42 of fairlead 4; Regulate the thimble length that hydraulic pressure draws agate; Make its right side that touches drift 2, pull hydraulic pressure and draw the agate spanner, make thimble continue to stretch out; Actuating cam neck bush 6 moves along camshaft holes of diesel engine 72; Stopper protrusion 22 up to drift 2 contacts termination with the locating surface A of fairlead 4, touches reversal valve this moment, removes hydraulic pressure; Pull out depression bar 5 along drift 2 directions; Steel ball 132 all gets in the pressing plate 13, and depression bar 5 breaks away from cam shaft bush 6, just can accomplish the assembling of one grade cam shaft bush 6.

Can find out in conjunction with Fig. 1 a, 1b and 1c, fitting depth control expression formula: the L1+L2=H1+H2+H3 of cam shaft bush 6 on diesel engine, wherein L1 be fairlead 4 locating surface A face between the end face of camshaft holes of diesel engine 72 apart from (shown in Fig. 8 a); L2 is the distance (as Fig. 1 c shown in) of the center of diesel-engine body 7 overhead cam bearing lining oilholes 71 to camshaft holes of diesel engine 72 end faces; H1 is that drift 2 locating surfaces (upper surfaces of drift 2 stopper protrusion 22) are to the distance (shown in Fig. 6 b) between drift 2 and tube connector 3 joint faces; H2 is tube connector 3 length (shown in Fig. 7 b); H3 be cylindrical slot 131 axis of pressing plate 13 to joint 1 axial locating surface (right side of joint 1 stop lug 11) distance (shown in Fig. 4 a), wherein L2 is a constant, is confirmed by the structural parameters of diesel engine.

Owing to guarantee installation phase place and the fitting depth of cam shaft bush 6 on diesel engine by large diesel engine cam shaft bush erecting tools; These special constructions have increased substantially the installation accuracy of cam shaft bush 6 on diesel engine; Reduced scrapping of the work of doing over again that causes because of cam shaft bush 6 installation accuracy differences and cam shaft bush; Reduce production cost, improved production efficiency.

More than a disclosed specific embodiment that is merely the utility model, still, the utility model is not limited thereto, any those skilled in the art can think variation all should fall into the protection domain of the utility model.

Claims (6)

1. a large diesel engine cam shaft bush erecting tools is characterized in that, comprising: depression bar be sleeved on the fairlead on the said depression bar; Said depression bar comprises: joint and drift; And the tube connector that connects said joint and drift, having the lining location division on the said joint, an end of said drift has stopper protrusion and the feather key that is arranged in the guiding keyway that extends vertically; Said fairlead inside has gathering sill; When said depression bar penetrated fairlead, the feather key of said drift stretched into the gathering sill of said fairlead, and spacing through said stopper protrusion.
2. large diesel engine cam shaft bush erecting tools according to claim 1; It is characterized in that; Said lining location division is the pressing plate that is arranged on said joint side, and said pressing plate has the cylindrical slot of receiving in the top, is provided with in the said cylindrical slot and receives spring-supported steel ball.
3. large diesel engine cam shaft bush erecting tools according to claim 2 is characterized in that said pressing plate is two, is mutually the side that is arranged on said joint of 180 degree relatively.
4. according to each described large diesel engine cam shaft bush erecting tools in the claim 1 to 3; It is characterized in that; Said fairlead comprises: cylindrical flange and the reinforcing bar annulus that is fixed on said cylindrical flange one end; The annular stop of receiving in the port of the other end of said cylindrical flange has radially, said fairlead pass through bolt that through hole is fixed to the camshaft hole port on the said annular stop.
5. large diesel engine cam shaft bush erecting tools according to claim 4 is characterized in that, has the spacing preiection that a plurality of and said stopper protrusion cooperates in the said cylindrical flange.
6. large diesel engine cam shaft bush erecting tools according to claim 1 is characterized in that said joint and drift are received on the tube connector through the positioning spiro pit tack welding respectively.
CN2011203173803U 2011-08-29 2011-08-29 Tool for installing camshaft bush of heavy-duty diesel engine CN202292035U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011203173803U CN202292035U (en) 2011-08-29 2011-08-29 Tool for installing camshaft bush of heavy-duty diesel engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011203173803U CN202292035U (en) 2011-08-29 2011-08-29 Tool for installing camshaft bush of heavy-duty diesel engine

Publications (1)

Publication Number Publication Date
CN202292035U true CN202292035U (en) 2012-07-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011203173803U CN202292035U (en) 2011-08-29 2011-08-29 Tool for installing camshaft bush of heavy-duty diesel engine

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102764979A (en) * 2012-07-17 2012-11-07 安徽天利动力股份有限公司 Liner pulling machine for assembling multi-cylinder diesel engine cam shaft hole liner
CN102950453A (en) * 2011-08-29 2013-03-06 广西玉柴机器股份有限公司 Camshaft bush installation tool of heavy-duty diesel engine
CN103395043A (en) * 2013-07-02 2013-11-20 广西玉柴机器股份有限公司 Press fitting device of cam shaft bush of diesel engine
CN107553393A (en) * 2017-09-08 2018-01-09 中国第汽车股份有限公司 A kind of tool for installing camshaft bush

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102950453A (en) * 2011-08-29 2013-03-06 广西玉柴机器股份有限公司 Camshaft bush installation tool of heavy-duty diesel engine
CN102764979A (en) * 2012-07-17 2012-11-07 安徽天利动力股份有限公司 Liner pulling machine for assembling multi-cylinder diesel engine cam shaft hole liner
CN103395043A (en) * 2013-07-02 2013-11-20 广西玉柴机器股份有限公司 Press fitting device of cam shaft bush of diesel engine
CN103395043B (en) * 2013-07-02 2015-08-05 广西玉柴机器股份有限公司 Press mounting of camshaft bush of diesel engine device
CN107553393A (en) * 2017-09-08 2018-01-09 中国第汽车股份有限公司 A kind of tool for installing camshaft bush

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

Granted publication date: 20120704

Effective date of abandoning: 20150429