CN204035962U - A kind of wrist pin bush orientation tool - Google Patents
A kind of wrist pin bush orientation tool Download PDFInfo
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- CN204035962U CN204035962U CN201420409305.3U CN201420409305U CN204035962U CN 204035962 U CN204035962 U CN 204035962U CN 201420409305 U CN201420409305 U CN 201420409305U CN 204035962 U CN204035962 U CN 204035962U
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- clamping plate
- orientation tool
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- connecting rod
- bolt
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Abstract
The utility model discloses a kind of wrist pin bush orientation tool, mainly for the wrist-pin end of connecting rod of stepped construction, orientation tool comprises the first clamping plate, the second clamping plate and bolt, be bolted two clamping plates, during use, orientation tool is fixed on wrist-pin end of connecting rod, wrist-pin end of connecting rod is fixedly remained between two clamping plates, and the position after lining access aperture seat is positioned by the locating surface of the second clamping plate or is limited.Orientation tool of the present utility model has installation environment strong adaptability, easy and simple to handle, axial location accurate, use the advantages such as efficient.
Description
Technical field
The utility model relates to diesel engine connecting bar assembly tool, particularly relates to a kind of connecting rob bushing orientation tool of the stepped construction adopting cooling method to install.
Background technology
Connecting rod is one of primary drive parts of diesel engine, and in diesel engine, it passes to bent axle the bulbs of pressure acting on piston-top surface, drives the gas in piston compression cylinder again by the driving of bent axle.The small end (microcephaly) of connecting rod is connected with piston by piston pin, assembling (press-in) metal lining in small end bore, to reduce piston or piston pin to the wearing and tearing of small end bore, be also more convenient for after liner wear simultaneously maintenance and replacing.
Lining and small end bore are interference fit, the installation method of general employing loads in small end bore by after lining cooling, namely be fixed in little stomidium seat after it expands, the axial location requirement of lining should be ensured during installation, especially for the connecting rod adopting small end lining and piston axial location mode, should ensure that lining two ends bulge quantity (exposing the distance of small end end face) meets designing requirement when mounted.
At present for stepped wrist-pin end of connecting rod, axial location when lining is installed, mainly contains two kinds of modes:
Mode 1: adopt the auxiliary installation of cushion block special.
Small end bore sectional view as shown in Figure 1, during installation, connecting rod shank 1 is kept flat on the table, adopt cushion block 5 and cushion block 6 connecting rod tip and small end broadside to be leveled up respectively, then the lining 4 cooled is pushed small end bore fast, contact with cushion block 4 to lining 4 broadside.
Which Problems existing is, (1) lining axial location is inaccurate, and positioning precision is low; (2) need to carry out the lifting of linkage component, the operation such as to level up, process is more complicated and consuming time longer, and for large link rod, unskilled labor station cannot meet placement requirement.
Mode 2: adopt specific purpose tool lining to be sent into small end bore and install.
As shown in Figure 2, first lining 4 is fixed on specific purpose tool assembly (comprising bolt 7, clamping plate 8 and locating piece 9) during use, common cooling, then pushes small end bore fast by the lining 4 cooled and tool assembly, contacts to instrument with wrist-pin end of connecting rod broadside.
Which Problems existing is, (1) instrument repeated disassembled and assembled, cooling, complex operation, and cool time is long; (2) when installing multiple linkage component, if number of tools is less, because instrument need cool repeatedly, efficiency of assembling will be affected.
Therefore, those skilled in the art be devoted to exploitation a kind of to installation environment strong adaptability, easy and simple to handle, axial location accurately, use efficient lining orientation tool.
Utility model content
For achieving the above object, the utility model provides a kind of wrist pin bush orientation tool, its for wrist-pin end of connecting rod comprise bore, the small end end face being positioned at its two ends comprises the first end face and the second end face respectively, first end face and the second end face are parallel to each other and perpendicular to the central axis limited by bore, the spacing of a pair first end faces is more than or equal to the spacing of a pair second end faces.A pair first end faces define the broadside of wrist-pin end of connecting rod, and a pair second end faces define the narrow limit of wrist-pin end of connecting rod, i.e. a kind of stepped wrist-pin end of connecting rod.
Orientation tool comprises the first clamping plate, second clamping plate and bolt, first clamping plate comprise the first fastening surface, second clamping plate comprise the second fastening surface, locating surface, and the first clamping plate and the second clamping plate include the bolt hole coordinated with bolt, bolt connects the first clamping plate and the second clamping plate also adjustment relative position between the two by bolt hole, thus can orientation tool be fixed on wrist-pin end of connecting rod, wrist-pin end of connecting rod is fixedly remained between two clamping plates, now the first fastening surface and the second fastening surface part or all of and a pair second end contacts respectively, lining can enter bore from one end of the bore near the first clamping plate, and centrally axis moves to the other end direction of bore, until against living locating surface.
Further, two bolts are comprised.
Further, the width of the first clamping plate and the width of the second fastening surface are C, and C=2 × (M+2), M are the nominal diameters of bolt.
Further, the wall thickness of locating surface width to be C1, C1=3 × t, t be lining.
Further, bolt hole center's distance of the first clamping plate and the second clamping plate is A,
D is the external diameter of wrist-pin end of connecting rod, and d is the diameter of bore.
Further, bolt hole center's distance of the first clamping plate and the second clamping plate is B, B=A+3 × M.
Further, the nominal diameter of bolt is more than or equal to 8mm.
Further, the thickness range of the first clamping plate is 8mm ~ 10mm; The thickness range of the second clamping plate is 12mm ~ 14mm.
Connecting rob bushing orientation tool of the present utility model, has the features such as structure is simple, method of operating is easy, efficiency of assembling is high, cost-saving, installs provide a kind of easier method for connecting rob bushing.There is following effect compared with installation method in the past:
1, the requirement of high accuracy lining bulge quantity can be met;
2, compare mode 1, do not need large for connecting rod small end to level up, therefore do not need linkage component to be placed on workbench to operate, in ground, part pallet, all can carry out lining installation, save the lifting operation of linkage component, the cost-saving and time;
3, compare mode 2, instrument is without the need to cooling, and instrument is lightweight, structure simple, easy accessibility, uses common spanner and clearance gauge to get final product complete operation, and especially during the assembling of batch connecting rob bushing, the advantage of efficiency of assembling will be more obvious;
4, this instrument changes through simple, is equally applicable to non-staged connecting rob bushing and adopts the cooled with liquid nitrogen of the connecting rob bushing of large end location to install.When the instrument of change, only need according to wrist-pin end of connecting rod external diameter and width dimensions, the screw of coupling appropriate length and bolt hole center's distance, and according to the requirement of the monolateral bulge quantity of lining, the shoulder height of corresponding coupling second clamping plate, can meet the installation of the different connecting rob bushing required.
Be described further below with reference to the technique effect of accompanying drawing to design of the present utility model, concrete structure and generation, to understand the purpose of this utility model, characteristic sum effect fully.
Accompanying drawing explanation
Fig. 1 is staged wrist-pin end of connecting rod bore sectional view, shows existing lining mounting means 1;
Fig. 2 is staged wrist-pin end of connecting rod bore sectional view, shows existing lining mounting means 2;
Fig. 3 is a kind of lining orientation tool of the present utility model and mounting means schematic diagram thereof;
Fig. 4 is the schematic diagram that staged wrist pin bush installs when having bulge quantity requirement;
Fig. 5 is the second clamping plate schematic diagram of a preferred embodiment of the present utility model;
Fig. 6 is the physical dimension schematic diagram of a preferred embodiment of the present utility model.
Detailed description of the invention
The design philosophy of orientation tool of the present utility model utilizes the narrow limit of wrist-pin end of connecting rod and the discrepant feature of broadside thickness, considers to adopt the instrument that structure is simple, location installed by the plintlet of convenient processing and manufacture as lining, mainly based on three aspects:
1, adopt two clamping plates to be fixed on wrist-pin end of connecting rod by fastening means, wrist-pin end of connecting rod is fixedly remained between two clamping plates;
2, by two clamping plates piece, spacing or location is carried out to the lining loading bore;
3, when the spacing of a pair first end faces is greater than the spacing of a pair second end faces, and when wrist-pin end of connecting rod fixedly remains between two clamping plates, orientation tool not with the Plane intersects at the first end face place.
As shown in Figure 3, wrist-pin end of connecting rod 2 is positioned at one end of connecting rod shank 1, wrist-pin end of connecting rod 2 defines bore 3 and central axis 20 thereof, wrist-pin end of connecting rod 2 is step-like, its two ends end face comprises the first end face 10 and the second end face 11 respectively, a pair first end faces 10 define the broadside of wrist-pin end of connecting rod 2, and a pair second end faces 11 define the narrow limit of wrist-pin end of connecting rod 2.Lining orientation tool comprises the first clamping plate 12, second clamping plate 13 and can be connected both securing member, adopts bolt 14 as securing member, the first clamping plate 12, second clamping plate 13 comprise the bolt hole 15 matched with bolt 14 in the present embodiment.
First clamping plate 12 and the second clamping plate 13 comprise the first fastening surface 16 respectively and the second fastening surface 17, second clamping plate 13 also comprise locating surface 18.When the first clamping plate 12 are connected by bolt 14 with the second clamping plate 13, and be fixedly clamped by adjusting bolt 14 between two clamping plates by wrist-pin end of connecting rod 2, now the first fastening surface 16 and the second fastening surface 17 directly act on a pair second end faces 11 respectively.Lining 4 can enter in (press-in) hole seat 3 from one end of the hole seat 3 near the first clamping plate 12, and can continue to enter until against the locating surface 18 of living the second clamping plate 12, locating surface 18 serves locates or spacing effect lining 4, thus accurately controls its bulge quantity.Locating surface 18 in Fig. 3 and the second fastening surface 17 are in same plane, and namely corresponding bulge quantity is the situation of 0.
Simultaneously when orientation tool clamping wrist-pin end of connecting rod, its geomery meets it and remains between a pair first end faces 10, and namely it is in the distance of either side away from the second end face 11, is all no more than the spacing of this side first end face 10 and the second end face 11.This structure can meet orientation tool (as in workbench, pallet) under connecting rod is in various situation and all can use.
Fig. 4 shows situation when bulge quantity Δ when lining 4 is installed is greater than 0.Corresponding need adjust the locating surface of the second clamping plate, can meet installation requirement, as shown in Figure 5, it is the structure for the second clamping plate 13 during bulge quantity Δ, it adopts stepped construction, and ladder height is bulge quantity Δ, and it can meet the installation requirement of high accuracy lining location.Now locating surface 18 and the second fastening surface 17 are not in same plane, and both form a step.Second fastening surface 17 is when orientation tool clamping wrist-pin end of connecting rod, and the second end face of laminating side, locating surface 18 is located or limiting bush, thus accurately can control bulge quantity by the shoulder height that control locating surface 18 and the second fastening surface 17 are formed.Also the second clamping plate 13 can be divided into two independently structures, the second folder 21 and keeper 22, both are provided with the bolt hole coordinated with bolt, common composition the second clamping plate 13.Second folder 21 comprises the second fastening surface 17, and it is when clamping wrist-pin end of connecting rod, and directly with the second end contact, keeper 22 comprises locating surface 18, for lining location or spacing.The advantage of this structure is, when needs adjustment bulge quantity, only need change corresponding second folder 21, save tool making cost.
On the other hand, bolt mode is not limited to for fastening between two clamping plates, can clamping is had with reference to some and the hand-operated tools of clamped condition can be kept, two clamping plates is arranged on corresponding parts respectively.Such as, plumbing combination pliers, F folder, binding clasp etc., clamping plate can be arranged on the positions direct acting with workpiece such as jaw.
Orientation tool of the present utility model will consider position dimension, the position of opening of bolt hole, the factor such as position dimension, clamping plate thickness of locating surface of two clamping plates fastening surface in design, to reach most suitable result of use, below in conjunction with example, be described further needing the physical dimension related to.
Orientation tool adopts two bolts to carry out fastening as shown in Figure 6, first clamping plate 12 and the second clamping plate 13 are provided with two bolts hole 15. respectively and adopt two bolts, the first clamping plate 12 and the second clamping plate 13 can be fixed on the one hand, make orientation tool stiff, ensure in the process of mounting bush 4, the locating surface 18 on the second clamping plate 13 can not change; Two bolts can limit the radial displacement in wrist-pin end of connecting rod 2 of lining orientation tool on the other hand, and ensure that the first clamping plate 12 do not interfere lining to be installed, the locating surface 18 of the second clamping plate 13 can meet positioning requirements; Meanwhile, with bolts, the installation and removal of more convenient lining orientation tool.Each several part sizing specification is as follows:
φ d---wrist-pin end of connecting rod bore 3 diameter;
φ D---wrist-pin end of connecting rod 2 external diameter;
T---lining 4 wall thickness;
M---bolt specification or nominal diameter; (bolt of recommendation >=M8, length is chosen according to the narrow hem width degree of wrist-pin end of connecting rod and two clamping plates thickness)
The width of the width of C---the first clamping plate 12 and the second fastening surface 17 of the second clamping plate 13, C=2 (M+2);
C1---the width of the locating surface 18 of the second clamping plate 13, C1=3 × t;
A---bolt hole 15 centre distance of the first clamping plate 12 and the second clamping plate 13; Computational methods are as follows:
B---the first clamping plate 12 and the second clamping plate 13 length; B=A+3 × M
H1---the first clamping plate 12 thickness (recommendation 8mm to 10mm);
H2---the second clamping plate 13 thickness (recommendation 12mm to 14mm);
Δ---shoulder height (shoulder height that locating surface 18 and the second fastening surface 17 are formed), need determine according to the designing requirement of the monolateral bulge quantity of institute's installing connecting rods lining.
The mode of two clamping plates with bolts, can meet high accuracy lining and install positioning requirements, and can realize the requirement of connecting rod shank mounting bush under any laying state, and can greatly improve the installation effectiveness of connecting rob bushing.
The using method of above orientation tool comprises the steps:
Step 1, bolt is each passed through bolt hole corresponding with it on the first clamping plate and the second clamping plate, to connect two clamping plates;
Step 2, be placed on wrist-pin end of connecting rod by erecting tools, wrist-pin end of connecting rod is between two clamping plates, and tights a bolt, now wrist-pin end of connecting rod fixedly remains between two clamping plates; During clamping wrist-pin end of connecting rod, first fastening surface and the second fastening surface need respectively with a pair second end plane-plane contacts, and need the position of guaranteeing the first clamping plate can not stop lining access aperture seat, the position of the locating surface of the second clamping plate can stop that lining gos deep into hole seat further, thus plays location or position-limiting action; According to above-mentioned structural design size, when wrist-pin end of connecting rod is against when living bolt, the above status requirement for the first clamping plate and the second clamping plate can be met.
Step 3, cooled lining is pushed bore from the one end of bore near the first clamping plate, until lining is against the locating surface of living the second clamping plate;
Step 4, to looser a bolt, take off erecting tools from wrist-pin end of connecting rod.
More than describe preferred embodiment of the present utility model in detail.Should be appreciated that the ordinary skill of this area just can make many modifications and variations according to design of the present utility model without the need to creative work.Therefore, all technical staff in the art according to design of the present utility model on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment, all should by the determined protection domain of claims.
Claims (8)
1. a wrist pin bush orientation tool, described wrist-pin end of connecting rod comprises bore, the small end end face being positioned at its two ends comprises the first end face and the second end face respectively, described first end face and described second end face are parallel to each other and perpendicular to the central axis limited by described bore, described in a pair, the spacing of the first end face is more than or equal to the spacing of the second end face described in a pair, it is characterized in that, described orientation tool comprises the first clamping plate, second clamping plate and bolt, described first clamping plate comprise the first fastening surface, described second clamping plate comprise the second fastening surface, locating surface, and described first clamping plate and described second clamping plate include the bolt hole coordinated with described bolt, described bolt connects described first clamping plate and described second clamping plate also adjustment relative position between the two by described bolt hole, thus can described orientation tool be fixed on described wrist-pin end of connecting rod, described wrist-pin end of connecting rod is fixedly remained between two clamping plates, now described first fastening surface and described second fastening surface part or all of and the second end contact described in a pair respectively, lining can enter described bore from one end of the described bore near described first clamping plate, and move along described central axis to the other end direction of described bore, until state locating surface against residence.
2. orientation tool as claimed in claim 1, is characterized in that, comprise two described bolts.
3. orientation tool as claimed in claim 2, it is characterized in that, the width of described first clamping plate and the width of described second fastening surface are C, and C=2 × (M+2), M are the nominal diameters of described bolt.
4. orientation tool as claimed in claim 3, is characterized in that, the wall thickness of described locating surface width to be C1, C1=3 × t, t be described lining.
5. orientation tool as claimed in claim 4, it is characterized in that, the described bolt hole center distance of described first clamping plate and described second clamping plate is A,
D is the external diameter of described wrist-pin end of connecting rod, and d is the diameter of described bore.
6. orientation tool as claimed in claim 5, it is characterized in that, the described bolt hole center distance of described first clamping plate and described second clamping plate is B, B=A+3 × M.
7. orientation tool as claimed in claim 1, it is characterized in that, the nominal diameter of described bolt is more than or equal to 8mm.
8. orientation tool as claimed in claim 1, it is characterized in that, the thickness range of described first clamping plate is 8mm ~ 10mm; The thickness range of described second clamping plate is 12mm ~ 14mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420409305.3U CN204035962U (en) | 2014-07-23 | 2014-07-23 | A kind of wrist pin bush orientation tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420409305.3U CN204035962U (en) | 2014-07-23 | 2014-07-23 | A kind of wrist pin bush orientation tool |
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| CN204035962U true CN204035962U (en) | 2014-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420409305.3U Active CN204035962U (en) | 2014-07-23 | 2014-07-23 | A kind of wrist pin bush orientation tool |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104117846A (en) * | 2014-07-23 | 2014-10-29 | 中国船舶重工集团公司第七一一研究所 | Installation tool of connecting rod small end lining and using method of installation tool |
| CN117464345A (en) * | 2023-12-27 | 2024-01-30 | 南通中远海运船务工程有限公司 | Preparation method of bearing cushion block and related device |
-
2014
- 2014-07-23 CN CN201420409305.3U patent/CN204035962U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104117846A (en) * | 2014-07-23 | 2014-10-29 | 中国船舶重工集团公司第七一一研究所 | Installation tool of connecting rod small end lining and using method of installation tool |
| CN117464345A (en) * | 2023-12-27 | 2024-01-30 | 南通中远海运船务工程有限公司 | Preparation method of bearing cushion block and related device |
| CN117464345B (en) * | 2023-12-27 | 2024-04-19 | 南通中远海运船务工程有限公司 | Preparation method of bearing cushion block and related device |
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