CN100584540C - Engine pressing piston pin device - Google Patents

Engine pressing piston pin device Download PDF

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Publication number
CN100584540C
CN100584540C CN200710093247A CN200710093247A CN100584540C CN 100584540 C CN100584540 C CN 100584540C CN 200710093247 A CN200710093247 A CN 200710093247A CN 200710093247 A CN200710093247 A CN 200710093247A CN 100584540 C CN100584540 C CN 100584540C
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CN
China
Prior art keywords
pilot hole
piston pin
gripper shoe
pressure head
depression bar
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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 - Fee Related
Application number
CN200710093247A
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Chinese (zh)
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CN101214643A (en
Inventor
李中友
张志发
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Lifan Technology Group Co Ltd
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Lifan Industry Group Co Ltd
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Publication date
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Priority to CN200710093247A priority Critical patent/CN100584540C/en
Publication of CN101214643A publication Critical patent/CN101214643A/en
Application granted granted Critical
Publication of CN100584540C publication Critical patent/CN100584540C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The present invention discloses a device pressing the piston pin of an engine, which comprises a bottom plate (1), a guide supporting plate (2), a positioning seat (3), an operating lever seat (4) and a pressure lever (14), wherein, the guide hole (3a) of the positioning seat (3) is provided two positioning grooves (3c), in which supporting rods (8) are placed, and a counterbalance (10) is arranged in each supporting rod (8). A rotary wheel disc (12) is hinged with the upper end of the operating lever seat by threaded studs (11), a pressure lever pillar (13) is fixed on the tail of the rotary wheel disc, the upper end of the pressure lever pillar (13) is hinged with the front part of the pressure lever (14), a mounting sleeve (15) is mounted at the position of the middle part of the pressure lever (14) corresponding to a pressure head (5) by bolts, and the upper end of the pressure head (5) is extended into the mounting sleeve (15). The present invention has the advantages of simple structure and convenient operation, and moreover, the present invention can greatly improve the quality and efficiency of equipment.

Description

A kind of engine pressing piston pin device
Technical field
The invention belongs to technical field of tooling clamps, specifically, relate to a kind of engine pressing piston pin device.
Background technology
The piston rod group is an in-engine vitals, and the quality of its equipment quality is to the sealing of cylinder operation with direct influence is arranged service life.Piston pin can be divided into two kinds of full floating wrist pin and semi-floating piston pins according to the matching relationship of piston pin and piston pin hole and piston pin and small end of connecting rod pin-and-hole.Full floating wrist pin is meant between piston pin and piston pin hole and piston pin and the small end of connecting rod pin-and-hole and is matched in clearance; Semi-floating piston pin is meant that piston pin and piston pin hole are matched in clearance, and piston pin and small end of connecting rod pin-and-hole are interference fit.Even full floating wrist pin cold charge at normal temperatures also may be very tight,, both before assembling, needed piston or small end of connecting rod heating so generally want hot shape.Its equipment process is: piston is placed on the location-plate, clean the piston pin sky, with hand piston is cut and to be pushed piston and cut in the hole, immediately small end of connecting rod is goed deep in the piston, make piston pin aim at the hole of cutting of small end of connecting rod, an end that knocks piston pin with wooden mallet makes piston pin cut the hole by small end of connecting rod and cuts bore edges until the piston other end again, finish whole assembling packing lock ring into, because used tool is very scattered, and piston or small end of connecting rod need assemble under the condition of high temperature, therefore operator's action must need many people to assist to finish rapidly, and assembly precision is difficult to guarantee.Publication number is the Chinese patent of CN1699024, and is by name: press-fitting tool for engine piston pin, a kind of frock clamp that is used to install piston pin is disclosed, its solved substantially above-mentioned in the equipment process existing problem.But still exist following 2 deficiencies:
1, external force directly acts on the pressure head, that is to say that the assembly crewman directly removes extrusion head with hand or special-purpose pressing machine in assembling process, and what different people exerted oneself varies in size, even if the size of power also can be different in the each assembling of identical people.The particularly important is staff is to act in one plane, the suffered power right and wrong in this plane are equally distributed, also are power heterogeneous when power is delivered to piston by pressure head, and adding the outer surface of piston that is assembled is black skin, relatively require great effort during assembling, effect neither be fine.If be equipped with pressing machine separately then need special manufacturing, time-consuming, effort and cost height.
Though 2 by being provided with VE hole and horizontal equilibrium bar in the balance seat of this frock bottom, utilize the move left and right adjustment of horizontal equilibrium bar to make the stressed poised state that is in all the time of the support bar that is arranged in the VE hole.This complex structure is cumbersome during this frock in processing, and active force returns piston and makes its stressed balance that reaches by repeatedly transmitting at last just anti-pass.In this process again owing to multiple reason, for example: above-mentioned externally applied forces own is exactly to do the non-uniform force that is used in the pressure head surface by staff, the not equal multiple reason of the degree of roughness of each piston face.In the unactual fortunately equipment of effect inaccurate situation can appear equipping once in a while often.
Summary of the invention
For solving above technical problem, the object of the present invention is to provide engine pressing piston pin device a kind of simple in structure, easy to operate, as to improve the equipment quality greatly.
Technical scheme of the present invention is as follows:
A kind of engine pressing piston pin device, comprise base plate, the guiding gripper shoe, positioning seat, operating rod bearing, depression bar, wherein: described guiding gripper shoe covers on outside the positioning seat, guiding gripper shoe upper end plate is provided with second pilot hole, in this second pilot hole pressure head is housed, described positioning seat and guiding gripper shoe lower end are fixedly mounted on the base plate, this positioning seat is provided with first pilot hole, this first pilot hole is positioned under second pilot hole of guiding gripper shoe, in first pilot hole guide post is housed, one side of described positioning seat has one section slotted eye that communicates with first pilot hole, described operating rod bearing is fixedly mounted on the base plate, and be positioned at the guiding gripper shoe the next door, one of operating rod bearing lower hinge backstay, the other end of this backstay is a cantilever, the middle part of described backstay is fixed with driving lever, this driving lever passes to enter in first pilot hole behind the slotted eye on the positioning seat and links to each other with the guide post lower end, it is characterized in that: the bilateral symmetry of described first pilot hole is provided with two locating slots, place support bar in this locating slot, this supporting bar top forms " V " type groove, should be hinged with " V " type balance weight in " V " type groove; Described operating rod bearing upper end is hinged with rotating wheel disk by stud, the afterbody of this rotating wheel disk is fixed with the depression bar pillar, this depression bar pillar upper end is hinged with described depression bar front portion, through latch installation sleeve is housed with the pressure head opposite position at described depression bar middle part, described pressure head upper end is stretched in the installation sleeve.
The present invention has saved publication number: CN1699024, denomination of invention is: in the balance seat of this frock bottom, VE hole and horizontal equilibrium bar are set in the Chinese patent of press-fitting tool for engine piston pin, avoided by active force repeatedly transmission at last just anti-pass return piston and make its stressed balance that reaches.In simplifying whole device in the balanced structure, by directly reaching balance to have improved a counterbalance effect with contacting of balance weight.On operating rod bearing, increase simultaneously pressure lever mechanism, purpose is exactly to avoid that external force directly acts on the pressure head in the above-mentioned patent, the influence that the pressure head discontinuity is brought, owing to adopted the bar press structure among the present invention, also utilized lever principle simultaneously, both laborsaving when operation, and by the transmission of depression bar to power, the power that acts on the pressure head is evenly distributed, thereby overcome above shortcoming.The pressure lever mechanism of Zeng Jiaing to need can replace the situation of special-purpose pressing machine fully in addition, thus save time, laborsaving, saved cost greatly.
Be provided with spring in first pilot hole of described guide post below, be provided with limited post in this spring.
When guide post rose, the elastic force of spring can erect booster action to lifting on the driving lever, made operation easily; Can play cushioning effect again during decline.Limited post had both carried out radially spacing to spring, play the upper end and also carry out spacing to the extreme lower position on the guide post vertical direction.
Be provided with fairlead between the second pilot hole inwall of described pressure head and guiding gripper shoe, there is a circular orientation step at the middle part of described pressure head.
Between the second pilot hole inwall of pressure head and guiding gripper shoe fairlead is set, there is a circular orientation step at the middle part of pressure head.Like this, only need control, just can guarantee the operating accuracy of pressure head the material and the accuracy of manufacture of fairlead.When piston pin has been press-fit into place and when also having overbottom pressure on the press, this overbottom pressure can be transferred to guide holder by the circular orientation step of pressure head upper end, and further transfers on the base plate, thereby avoids because overvoltage causes the piston pin distortion.
In the arranged outside that is positioned at described depression bar pillar extension spring is arranged, this extension spring two links to each other with rotating wheel disk with the depression bar front end respectively.The purpose that extension spring is set is to make the depression bar self-return to drive pressure head and withdraws from from piston pin hole.
Beneficial effect: the invention provides engine pressing piston pin device a kind of simple in structure, easy to operate, as to improve equipment quality and equipment efficient greatly.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is that the B-B of Fig. 2 is to cutaway view;
Fig. 4 is the partial sectional view of positioning seat among Fig. 3;
Fig. 5 is the partial sectional view of support bar and balance weight position relation among Fig. 3;
Fig. 6 is that the A-A of Fig. 2 is to cutaway view
The specific embodiment
The invention will be further described below in conjunction with drawings and Examples:
Embodiment, as Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, shown in Figure 6: the present invention is mainly by base plate 1, guiding gripper shoe 2, positioning seat 3, operating rod bearing 4, depression bar 14 is formed, wherein: described guiding gripper shoe 2 covers on outside the positioning seat 3, guiding gripper shoe 2 upper end plates are provided with second pilot hole, in this second pilot hole pressure head 5 is housed, described positioning seat 3 and guiding gripper shoe 2 lower ends are fixedly mounted on the base plate 1, this positioning seat 3 is provided with the first pilot hole 3a, this first pilot hole 3a is positioned under second pilot hole of guiding gripper shoe 2, in the first pilot hole 3a guide post 6 is housed, one side of described positioning seat 3 has one section slotted eye 3b that communicates with the first pilot hole 3a, described operating rod bearing 4 is fixedly mounted on the base plate 1, and be positioned at the guiding gripper shoe 2 the next door, one of operating rod bearing 4 lower hinge backstays 7, the other end of this backstay 7 is a cantilever, the middle part of described backstay 7 is fixed with driving lever 19, this driving lever 19 passes to enter among the first pilot hole 3a behind the slotted eye 3b on the positioning seat 3 and links to each other with guide post 6 lower ends, it is characterized in that: the bilateral symmetry of the described first pilot hole 3a is provided with two locating slot 3c, place support bar 8 in this locating slot 3c, these support bar 8 tops form " V " type groove 9, should be hinged with " V " type balance weight 10 in " V " type groove 9; Described operating rod bearing upper end is hinged with rotating wheel disk 12 by stud 11, the afterbody of this rotating wheel disk is fixed with depression bar pillar 13, these depression bar pillar 13 upper ends and described depression bar 14 are anterior hinged, through latch installation sleeve 15 is housed at described depression bar 14 middle parts and pressure head 5 opposite positions, described pressure head 5 upper ends are stretched in the installation sleeve 15.Be provided with spring 17 in the first pilot hole 3a below the guide post 6, this spring is provided with limited post 18 for 17 li.Be provided with fairlead 18 between the second pilot hole inwall of pressure head 5 and guiding gripper shoe 2.There is a circular orientation step 5a at the middle part of pressure head 5.In the arranged outside that is positioned at described depression bar pillar 13 extension spring 20 is arranged, these extension spring 20 two link to each other with rotating wheel disk 12 with depression bar 14 front ends respectively.
Operation principle: during use, spur backstay 7 downwards, this backstay 7 drives driving lever 19 and produces to bottom offset, driving lever 19 drives the guide post 6 that connects firmly with it and moves downward and compress spring 17, make and produce the space of placing piston between guide post 6 upper ends and pressure head 5 lower ends, piston 21 is positioned on the support bar 8, slowly upwards spur backstay 7, guide post 6 is upwards inserted in the piston pin hole of piston 21 lower ends, again small end of connecting rod is put into piston, continue slowly upwards moving backstay 7, guide post 6 is moved on continuing and insert in the piston pin hole of small end of connecting rod, just be inserted into half height of small end of connecting rod piston pin hole until the upper end of guide post 5.From the fairlead 18 at guiding gripper shoe 2 tops, put into piston pin 22 then, because the piston pin hole on piston pin 22 and the piston 21 is a matched in clearance, so piston pin 22 will slip in the piston pin hole of piston 21 upper ends automatically, and fall on the upper surface of small end of connecting rod.This moment, the equipment personnel applied active force by pressure lever mechanism pulling depression bar to pressure head.

Claims (5)

1, a kind of engine pressing piston pin device, comprise base plate (1), guiding gripper shoe (2), positioning seat (3), operating rod bearing (4), depression bar (14), wherein: described guiding gripper shoe (2) covers on outside the positioning seat (3), guiding gripper shoe (2) upper end plate is provided with second pilot hole, pressure head (5) is housed in this second pilot hole, described positioning seat (3) and guiding gripper shoe (2) lower end are fixedly mounted on the base plate (1), this positioning seat (3) is provided with first pilot hole (3a), this first pilot hole (3a) is positioned under second pilot hole of guiding gripper shoe (2), guide post (6) is equipped with in first pilot hole (3a) lining, one side of described positioning seat (3) has one section slotted eye (3b) that communicates with first pilot hole (3a), described operating rod bearing (4) is fixedly mounted on the base plate (1), and be positioned at the guiding gripper shoe (2) the next door, one of operating rod bearing (4) lower hinge backstay (7), the other end of this backstay (7) is a cantilever, the middle part of described backstay (7) is fixed with driving lever (19), this driving lever (19) passes to enter in first pilot hole (3a) behind the slotted eye (3b) on the positioning seat (3) and links to each other with guide post (6) lower end, it is characterized in that: the bilateral symmetry of described first pilot hole (3a) is provided with two locating slots (3c), place support bar (8) in this locating slot (3c), this support bar (8) top forms " V " type groove (9), should be hinged with " V " type balance weight (10) in " V " type groove (9); Described operating rod bearing (4) upper end is hinged with rotating wheel disk (12) by stud (11), the afterbody of this rotating wheel disk is fixed with depression bar pillar (13), this depression bar pillar (13) upper end is anterior hinged with described depression bar (14), through latch installation sleeve (15) is housed with pressure head (5) opposite position at described depression bar (14) middle part, described pressure head (5) upper end is stretched in the installation sleeve (15).
2, a kind of engine pressing piston pin device according to claim 1 is characterized in that: first pilot hole (3a) lining of described guide post (6) below is provided with spring (16), and this spring (16) is enclosed within outside the limited post (17).
3, a kind of engine pressing piston pin device according to claim 1 is characterized in that: be provided with fairlead (18) between the second pilot hole inwall of described pressure head (5) and guiding gripper shoe (2).
4, a kind of engine pressing piston pin device according to claim 1 is characterized in that: there is a circular orientation step (5a) at the middle part of pressure head (5), and this circular orientation step (5a) is positioned at the upper surface of described guiding gripper shoe (2).
5, a kind of engine pressing piston pin device according to claim 1 is characterized in that: in the arranged outside that is positioned at described depression bar pillar (13) extension spring (20) is arranged, this extension spring (20) two links to each other with rotating wheel disk (12) with depression bar (14) front end respectively.
CN200710093247A 2007-12-29 2007-12-29 Engine pressing piston pin device Expired - Fee Related CN100584540C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200710093247A CN100584540C (en) 2007-12-29 2007-12-29 Engine pressing piston pin device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200710093247A CN100584540C (en) 2007-12-29 2007-12-29 Engine pressing piston pin device

Publications (2)

Publication Number Publication Date
CN101214643A CN101214643A (en) 2008-07-09
CN100584540C true CN100584540C (en) 2010-01-27

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Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102699864A (en) * 2011-12-14 2012-10-03 苏州工业园区高登威科技有限公司 Limit screw pressure head
CN103639942A (en) * 2013-11-28 2014-03-19 无锡市航鹄科技有限公司 Tool for installing and pressing positioning pin
CN104209920A (en) * 2014-08-20 2014-12-17 安徽江淮汽车股份有限公司 Piston pin clamp spring press-fitting device
CN104191212B (en) * 2014-09-11 2016-07-06 莆田市荣兴机械有限公司 A kind of assembling device of the worm screw of testing the speed on brake hub lid
CN104191409B (en) * 2014-09-11 2017-01-18 莆田市荣兴机械有限公司 Assembly method for speed-measurement worm on brake hub cap
CN107009314A (en) * 2016-01-27 2017-08-04 容智勇 A kind of curtain Luo Maquan is manually pressed together machine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3889339A (en) * 1974-03-05 1975-06-17 Johnny A Pollock Press for home removal of piston pins
US4118851A (en) * 1977-07-07 1978-10-10 Martelaere David L De Universal piston pin remover and installer
CN2115859U (en) * 1992-03-04 1992-09-16 朱黑海 Semi-floating type piston pin detaching machine
CN1699024A (en) * 2005-06-16 2005-11-23 重庆力帆实业(集团)有限公司 Press-fitting tool for engine piston pin
CN201154432Y (en) * 2008-01-28 2008-11-26 力帆实业(集团)股份有限公司 Press fitting apparatus for engine piston pin

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3889339A (en) * 1974-03-05 1975-06-17 Johnny A Pollock Press for home removal of piston pins
US4118851A (en) * 1977-07-07 1978-10-10 Martelaere David L De Universal piston pin remover and installer
CN2115859U (en) * 1992-03-04 1992-09-16 朱黑海 Semi-floating type piston pin detaching machine
CN1699024A (en) * 2005-06-16 2005-11-23 重庆力帆实业(集团)有限公司 Press-fitting tool for engine piston pin
CN201154432Y (en) * 2008-01-28 2008-11-26 力帆实业(集团)股份有限公司 Press fitting apparatus for engine piston pin

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Granted publication date: 20100127

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