CN206738337U - A kind of pin shaft structure - Google Patents
A kind of pin shaft structure Download PDFInfo
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- CN206738337U CN206738337U CN201720547502.5U CN201720547502U CN206738337U CN 206738337 U CN206738337 U CN 206738337U CN 201720547502 U CN201720547502 U CN 201720547502U CN 206738337 U CN206738337 U CN 206738337U
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- pin body
- axle center
- pin
- oil duct
- oil
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Abstract
The utility model discloses a kind of pin shaft structure.At least two axial oil ducts and corresponding radial direction oil are provided with pin body, than the quantity that prior art adds oil outlet, high lubricating effect.Distance of the axle center of axial oil duct on pin body end with pin body axle center, less than the distance in the axle center of axial oil duct and radial direction oil intersection axial direction oil duct and pin body axle center so that axial oil duct turns into axle center inclination oil duct not parallel with the axle center of pin body.Radial direction oil is shorter to be easy to dredging to clear up；Axial oil duct tilts and the axle center away from pin body, oil duct have weakening effect substantially to reduce bearing pin bearing capacity, improve the intensity of bearing pin, and fatigue resistance greatly improves.Pin body surface adds cladding layer, enhances anti-corrosive properties, the wearability of bearing pin, and pin body only needs to retain its preferable comprehensive mechanical performance by modifier treatment, and fatigue resistance is big, improves the service life of bearing pin, reduces the use cost of main frame.
Description
Technical field
It the utility model is related to connector technical field, more particularly to a kind of pin shaft structure.
Background technology
Bearing pin is for connecting two or more parts with relative rotation, due to being rotated in parts relative to bearing pin
During, larger frictional force can be produced, it is therefore desirable to which, using oil lubrication, the structure of existing bearing pin lubrication is present substantially
Defect.If wheel loader is the engineering machinery that is most widely used in current engineering construction, working device of loader is to complete
Handling operation and the spacing multi-connecting-rod mechanism with hydraulic jack, including swing arm, rocking arm, pull bar and scraper bowl, lead between each part
Hinging pin shaft connection is crossed, whole equipment is also to be connected by hinging pin shaft with front frame, by scraper bowl spading, receipts bucket, is turned
To, transport and discharging action form a complete working cycles；Connected between each part by bearing pin and realize relative rotation, respectively
Load is mainly also transmitted by hinging pin shaft between part；By taking swing arm and the bearing pin of scraper bowl hinged place as an example, in loading machine
Complete during loading and unloading, swing arm does positive, reversely about 120 ° of rotations around bearing pin, so bearing pin bears circulation unidirectionally at work
Bending load, shear stress and extrusion stress, therefore, there is very high requirement to the intensity and hardness of bearing pin.
And loading machine, due to more grit, dust in working environment, the abrasion of bearing pin turns into inevitable, when wear extent reaches one
Bearing pin is scrapped when determining degree, if changing bearing pin not in time, it will cause serious consequence, as loading height do not reach rated value,
A series of problems, such as turn up resistance increases, equipment is unstable, system noise increases, efficiency reduces.Therefore, as loading machine
Important connection member, bearing pin bears violent frictional force in work process, also requires that surface has good wearability.For
Mitigate abrasion, typically by setting oil duct on bearing pin, grease is lubricated between entering friction pair.
In the prior art, bearing pin is typically welded by two parts, and installing plate is used for fixed pin shaft, bearing pin and installation pin-and-hole
Interior axle sleeve plane-plane contact friction, therefore, axial direction and radial direction oil leab are all typically machined with bearing pin, grease is entered and rubs
It is lubricated between wiping is secondary.In order to ensure the versatility of bearing pin part, axial oil duct is usually located at the centre of bearing pin.And from above-mentioned
Bearing pin bearing behavior from the point of view of, axial lubrication road is located at bearing pin centre position, and this is exactly position of the pin bearing by maximal bending moment,
Obvious oil duct has weakening effect to bearing pin bearing capacity；Axial lubrication road is located at bearing pin centre position, also causes radial direction oil
It is longer, the possibility that bearing pin is broken at radial direction oil is exacerbated, therefore, axial direction and the radial direction oil leab of prior art are generally
Orthogonal L shape oil road（Referring to Fig. 1）, its shortcoming is that side is fuel-displaced, and lubricant effect is bad, and oil duct is not easy dredging cleaning, and
Oil duct is designed to the fuel-displaced T-shaped oil duct in both sides, then radial direction oil can make the intensity of bearing pin further reduce because of radial direction insertion；
On the other hand because loading machine working environment is severe, although take corresponding seal approach also have part dust into bearing pin and
The fit clearance of axle sleeve, and iron filings out etc. are worn because lubricating oil and sealing reason oneself will not be dropped out so as to aggravate to grind
Damage, the iron filings of dust and abrasion out gradually squeeze into radial direction oil, can also make stopping up of oil channel, longer radial direction oil to dredge
Cleaning becomes very difficult.
In the prior art, the material of bearing pin uses 40CrMoA, 30CrMoTi more, and by the heat treatment work such as quenched, quenching
Skill.Fracture and over worn situation mainly occur at oil leab for the failure mode of bearing pin in use, and bearing pin " stings pin "
Problem is one of quality problems of user's long-term feedback, sends abnormal sound sound and excessive wear when reflecting bearing pin work, greatly
Shorten the service life of bearing pin in ground.
In order to improve the wearability of bearing pin, bearing pin typically needs surface hardening to handle, and 40CrMoA, 30CrMoTi through hardening
Property it is good, stress concentration and micro-crack are produced easily at oil duct, fatigue stress is produced in use and is broken bearing pin, weakens bearing pin
Intensity, therefore the contradiction of wearability and intensity cannot solve, and be perplexed all the time by industry.
The content of the invention
Have very from the position that background above technical Analysis can be seen that bearing pin fracture, excessive wear and axial lubrication road
Important Relations.In loading machine working cycle process, bearing area is fixed, and magnitude of load is periodic cycle.In bearing pin
Axial oil duct is opened in centre weakens the intensity of bearing pin, should combine bearing pin bearing behavior, determines the optimum position of axial oil duct,
This weakening effect is minimized.
The purpose of this utility model is overcome the deficiencies in the prior art, there is provided a kind of high lubricating effect, oil duct cleaning are dredged
Logical convenient, intensity is high, and comprehensive mechanical performance is good, not easy to break, the pin shaft structure of service life length.
Used technical scheme is the utility model to achieve the above object：
A kind of pin shaft structure, including pin body, pin body are provided with axial oil duct, the middle part of pin body be provided with
The corresponding radial direction oil of axial oil duct, axial oil duct are connected with radial direction oil, it is characterised in that：It is provided with pin body
At least two axial oil ducts and corresponding radial direction oil, the axle center of axial oil duct on pin body end with bearing pin sheet
The distance in body axle center, less than the distance in the axle center and pin body axle center of axial oil duct and radial direction oil intersection axial direction oil duct,
So that axial oil duct turns into axle center inclination oil duct not parallel with the axle center of pin body.
Above-mentioned technical proposal, because radial direction oil is shorter, even if also allowing for dredging cleaning using middle blocking；Axial oil duct inclines
The tiltedly axle center of setting and remote pin body and therewith irrelevancy row, and radial direction oil are shorter, and oil duct is to bearing pin bearing capacity
There is weakening effect substantially to reduce；
In the utility model, two axial oil ducts and corresponding radial direction oil are provided with described pin body
Road, two axial oil ducts are located at same one end of pin body；Two axial oil ducts are symmetrical along the axle center of pin body, two
Radial direction oil is symmetrical along the axle center of pin body；
In the utility model, two axial oil ducts and corresponding radial direction oil are provided with described pin body
Road, two axial oil ducts can also be located at the both ends of pin body respectively；The axle center of two axial oil ducts is parallel to each other, two footpaths
It is symmetrical to oil duct along the axle center of pin body；
Above-mentioned technical proposal, due to being provided with two axial oil ducts and corresponding radial direction oil in pin body
Road, than the quantity that prior art adds oil outlet, high lubricating effect.
Further, the diameter of the axial oil duct is slightly larger than the diameter of radial direction oil；
Above-mentioned technical proposal, even in severe working environment, dust enters the fit clearance of bearing pin and axle sleeve and gradual
Radial direction oil is squeezed into, and then enters back into axial oil duct, because the diameter of axial oil duct is slightly larger than the diameter of radial direction oil, is being entered
Space becomes big after axial oil duct, is not the excessively fine and close of extruding, is easy to dredging to clear up.
In the utility model, described pin body surface is provided with least one layer of laser cladding layer, the laser melting coating
The thickness of layer is 0.1-3.0mm.
Above-mentioned technical proposal, on the surface of original pin body, added by laser melting and coating technique and pin body
Surface there is another material --- the alloy cladding layer of fine adhesion, former pin body is provided with so-called two kinds of materials
The bearing pin of matter, former pin body only needs to retain its preferable comprehensive mechanical performance by modifier treatment, and the cladding layer on surface
Than original bearing pin, there is the characteristics of high rigidity, the high yield limiting range of stress and low-frictional force, enhance the anti-corrosive properties, resistance to of bearing pin
Mill property, and the service life of bearing pin is improved, reduce the use cost of main frame.
The beneficial effects of the utility model：
1st, the utility model is provided with least two axial oil ducts and corresponding radial direction oil in pin body,
Than the quantity that prior art adds oil outlet, lubrication area, high lubricating effect are increased.
2nd, the utility model uses shorter radial direction oil, even if also allowing for dredging cleaning using middle blocking；Axial oil duct
It is obliquely installed and the axle center away from pin body and irrelevancy row therewith, and radial direction oil is shorter, oil duct carries energy to bearing pin
Power has weakening effect substantially to reduce, and improves the intensity of bearing pin, and fatigue resistance greatly improves.
3rd, the utility model uses shorter radial direction oil, and the diameter of axial oil duct is straight slightly larger than radial direction oil
The dirts such as footpath, dust space after axial oil road is entered after squeezing into radial direction oil becomes big, is not the excessively fine and close of extruding, is easy to
Dredging cleaning.
4th, on the surface of original pin body, cladding layer is added, pin body only needs to retain by modifier treatment
Its preferable comprehensive mechanical performance, fatigue resistance is big, and the cladding layer on surface enhances the anti-corrosive properties of bearing pin, wearability, and
The service life of bearing pin is improved, reduces the use cost of main frame.
Brief description of the drawings
Fig. 1 is the schematic diagram of the pin shaft structure of prior art.
Fig. 2 is the schematic front view of the utility model pin shaft structure embodiment one.
Fig. 3 is the schematic top plan view of the utility model pin shaft structure embodiment one.
Fig. 4 is the schematic front view of the utility model pin shaft structure embodiment two.
In figure：1- installing plates, 2- oil nozzles, 3- pin bodies, 4- axial directions oil duct, 5- radial direction oils, 6- laser cladding layers.
Embodiment
The utility model is described further below by non-limiting embodiment and with reference to accompanying drawing.
Embodiment one：
Referring to Fig. 2, Fig. 3, a kind of pin shaft structure, be welded by pin body 3 and installing plate 1, pin body 3 it is same
End is provided with 2 axial oil ducts 4, and axle center of two axial oil ducts 4 along pin body 3 is symmetrical, and the middle part of pin body 3 is provided with
2 radial direction oils 5, each radial direction oil 5 correspond to 1 axial oil duct 4, axle center of two radial direction oils 5 along pin body 3 respectively
Symmetrical, each axial oil duct 4 is connected with respective corresponding radial direction oil 5 respectively；Each axial oil duct 4 is in bearing pin sheet
The end of body 3 is connected with oil nozzle 2；Distance of the axle center of axial oil duct 4 on the end of pin body 3 with the axle center of pin body 3,
Less than the distance in the axle center of axial oil duct 4 and the intersection axial direction oil duct 4 of radial direction oil 5 and the axle center of pin body 3 so that axially
Oil duct 4 turns into axle center inclination oil duct not parallel with the axle center of pin body 3.Specific to the present embodiment, the diameter of pin body 3
100mm, length 260mm, two radial direction oils 5 are arranged at the distance of shaft centers pin in the centre position of pin body 3, i.e. radial direction oil 5
The end 130mm of shaft body 3, the distance in the axle center and the axle center of pin body 3 of axial oil duct 4 is on the end of pin body 3
15mm, axial oil duct 4 and the distance in the axle center and the axle center of pin body 3 of the intersection axial direction oil duct 4 of radial direction oil 3 are 35mm,
The diameter 8mm of axial oil duct 4, the diameter 6mm of radial direction oil 5；The surface of pin body 3 is provided with one layer of laser cladding layer 6, laser
The thickness of cladding layer 6 is 0.1-3.0mm, preferably 0.7mm or 0.8mm.
Embodiment two：
Difference with embodiment one is that in the present embodiment, the surface of pin body 3 is provided with one layer of laser cladding layer 6,
The thickness of laser cladding layer 6 is 0.1-3.0mm, preferably 1.5mm.
Embodiment three：
Difference with embodiment one is that in the present embodiment, the surface of pin body 3 is provided with one layer of laser cladding layer 6,
The thickness of laser cladding layer 6 is 0.1-3.0mm, preferably 0.1mm.
Example IV：
Fig. 4 is referred to, the difference with embodiment one is, in the present embodiment, two axial oil ducts 4 are located at bearing pin respectively
The both ends of body 3；The axle center of two axial oil ducts is parallel to each other, and axle center of two radial direction oils 5 along pin body 3 is symmetrically divided
Cloth.The surface of pin body 3 is provided with one layer of laser cladding layer 6, and the thickness of laser cladding layer 6 is 0.1-3.0mm, preferably
2.5mm or 3.0mm.
Illustrative embodiments listed above are only not to described by the utility model for understanding that the utility model is used
The limitation of technical scheme, the those of ordinary skill about field, on the basis of technical scheme described in claim, it can also make
Go out a variety of changes or deformation, all equivalent changes or deformation should all cover claims of the present utility model it
It is interior.
Claims (6)
1. a kind of pin shaft structure, including pin body, pin body is provided with axial oil duct, and the middle part of pin body is provided with and axle
The radial direction oil corresponding to oil duct, axial oil duct are connected with radial direction oil, it is characterised in that：Be provided with pin body to
Few two axial oil ducts and corresponding radial direction oil, the axle center of axial oil duct on pin body end with pin body
The distance in axle center, less than the distance in the axle center of axial oil duct and radial direction oil intersection axial direction oil duct and pin body axle center, make
Obtaining axial oil duct turns into axle center inclination oil duct not parallel with the axle center of pin body.
A kind of 2. pin shaft structure according to claim 1, it is characterised in that：Two axles are provided with described pin body
To oil duct and corresponding radial direction oil, two axial oil ducts are located at same one end of pin body；Two axial oil duct edges
The axle center of pin body is symmetrical, and two radial direction oils are symmetrical along the axle center of pin body.
A kind of 3. pin shaft structure according to claim 1, it is characterised in that：Two axles are provided with described pin body
To oil duct and corresponding radial direction oil, two axial oil ducts are located at the both ends of pin body respectively；Two axial oil ducts
Axle center be parallel to each other, two radial direction oils are symmetrical along the axle center of pin body.
4. according to a kind of pin shaft structure described in claim 1 or 2 or 3, it is characterised in that：The diameter of the axial oil duct is bigger
In the diameter of radial direction oil.
5. according to a kind of pin shaft structure described in claim 1 or 2 or 3, it is characterised in that：Described pin body surface is set
There is at least one layer of laser cladding layer, the thickness of the laser cladding layer is 0.1-3.0mm.
A kind of 6. pin shaft structure according to claim 4, it is characterised in that：Described pin body surface is provided with least
One layer of laser cladding layer, the thickness of the laser cladding layer is 0.1-3.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720547502.5U CN206738337U (en) | 2017-05-17 | 2017-05-17 | A kind of pin shaft structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720547502.5U CN206738337U (en) | 2017-05-17 | 2017-05-17 | A kind of pin shaft structure |
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| Publication Number | Publication Date |
|---|---|
| CN206738337U true CN206738337U (en) | 2017-12-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720547502.5U Active CN206738337U (en) | 2017-05-17 | 2017-05-17 | A kind of pin shaft structure |
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| Country | Link |
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| CN (1) | CN206738337U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111455381A (en) * | 2020-05-22 | 2020-07-28 | 新疆汇翔激光科技有限公司 | Laser cladding device and laser cladding forming method |
-
2017
- 2017-05-17 CN CN201720547502.5U patent/CN206738337U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111455381A (en) * | 2020-05-22 | 2020-07-28 | 新疆汇翔激光科技有限公司 | Laser cladding device and laser cladding forming method |
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