CN205062786U - Bolt hole - Google Patents
Bolt hole Download PDFInfo
- Publication number
- CN205062786U CN205062786U CN201520793165.9U CN201520793165U CN205062786U CN 205062786 U CN205062786 U CN 205062786U CN 201520793165 U CN201520793165 U CN 201520793165U CN 205062786 U CN205062786 U CN 205062786U
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- circle
- pin hole
- bolt axle
- diameter
- center
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Abstract
The utility model discloses a bolt hole for elevating system, bolt hole include mid portion, go up marginal part and lower marginal part. The difference more than or equal to installation clearance of mid portion's diameter and pin shaft's diameter. Go up marginal part and the difference less than or equal to correction clearance of lower marginal part with pin shaft's diameter. Mid portion is the partly of first circle, goes up marginal part partly for the second circle, and the centre of a circle of second circle lies in the top in the centre of a circle of first circle, and lower marginal part is some of third circle, and the round centre of a circle of third lies in the below in the centre of a circle of first circle. The utility model discloses a bolt hole has reduced last diameter along subtotal lower edge part for go up the diameter that is close to pin shaft more along the partial diameter of subtotal lower edge, make pin shaft can have the higher goodness of fit when the atress, promoted the ability of rectifying a deviation, avoided because the bolt hole edge that the pin shaft skew led to the fact is out of shape the dead problem of pin shaft card that makes.
Description
Technical field
The utility model relates to long strands field, more particularly, relates to a kind of pin hole for elevating mechanism.
Background technology
At elevating mechanism, such as, in hydraulic bolt lifting type platform, the pin hole on spud leg realizes elevating function, namely realizes required form of structure hull being lifted away from the water surface.Spud leg bears the load of hull by pin hole.
In prior art, the principal shape of pin hole is goose egg type or square.Fig. 1 a and Fig. 1 b discloses in prior art the shape adopting pin hole.Pin hole shown in Fig. 1 a is goose egg type, and the pin hole shown in Fig. 1 b is square.For the ease of bolt axle discrepancy pin hole, pin hole needs more bigger than bolt axle.Usually, can retain assemblage gap between pin hole and bolt axle, assemblage gap is generally 20mm, i.e. the diameter of pin hole 20mm larger than the diameter of bolt axle, or more.
Shown in figure 1a, the pin hole 102 of goose egg type is actual is the distortion in barrel band hole, with the bolt axle 101 of circle with the use of.The size of the upper edge portion 121 of goose pin hole 102 remains assemblage gap, and namely the size of upper edge portion 121 is larger than bolt axle 101.The lower edge part 122 of pin hole 102 does not retain assemblage gap, and the gap between the diameter of the lower edge part 122 of pin hole and bolt axle 101 is within 1mm.So the upper edge portion 121 of pin hole 102 is greater than lower edge part 122, form the shape of goose egg.Pin hole 101 can from pin hole 102 of coming in and going out easily near the region of upper edge portion 121.
Shown in figure 1b, square pin hole 104 and square bolt axle 103 with the use of.The size on each limit of square pin hole 104 is all large than the size on each limit of bolt axle 103, and usually, the limit of pin hole 104, than the length of side 20mm or more of bolt axle 103, reserves assemblage gap thus.As shown in Figure 1 b, bolt axle 103 can be come in and gone out easily in pin hole 104, but the position of bolt axle 103 in pin hole 104 is not fixed, but can be movable in the scope of assemblage gap.
Carry out at hydraulic bolt lifting type platform being elevated in the process of hull and towage operation, owing to affecting by external environment condition horizontal load, bolt axle can produce and rock in pin hole, and occurs mobile.Find in actual use, after accumulative use a period of time, if bolt axle is not on the center line of pin hole but occurred skew, so there will be bolt axle acts on certain edge of pin hole situation due to stressed skew, this situation can cause pin hole edge deformation, pin hole distortion can make bolt axle stuck, causes bolt axle to extract.The method solving bolt axle skew in prior art is on spud leg cylindrical shell, increasing anti-torsion plate.But adding sets up defences reverses the weight that plate not only increases spud leg, adds cost, and needs the accuracy of manufacture of requirements at the higher level, add manufacture difficulty.Another kind of solution reduces assemblage gap to reduce the scope of activities of bolt axle in pin hole.But reduce assemblage gap and incite somebody to action significantly erection & lift difficulty, human cost is significantly increased.
Utility model content
The utility model is intended to propose a kind of pin hole, improves centering capacity when retaining and installing convenience.
According to an embodiment of the present utility model, propose a kind of pin hole, for elevating mechanism, pin hole comprises mid portion, rising wood and lower edge.The difference of the diameter of mid portion and the diameter of bolt axle is more than or equal to assemblage gap.The difference of the diameter of rising wood and lower edge and bolt axle is less than or equal to corrects gap.
In one embodiment, mid portion is a part for the first circle, and the difference of the diameter of the first diameter of a circle and bolt axle is more than or equal to assemblage gap.
In one embodiment, rising wood is a part for the second circle, and the difference of the diameter of the second diameter of a circle and bolt axle is less than or equal to corrects gap, and the center of circle of the second circle is positioned at the top in the center of circle of the first circle.
In one embodiment, the thickness of slab of the distance between the center of circle of second center of circle of justifying and the first circle and the plate at pin hole place is relevant, and circular arc and first circular arc justified of the second circle are tangent in intersection.
In one embodiment, lower edge is a part for the 3rd circle, and the difference of the diameter of the 3rd diameter of a circle and bolt axle is less than or equal to corrects gap, and the center of circle of the 3rd circle is positioned at the below in the center of circle of the first circle.
In one embodiment, the thickness of slab of the distance between the center of circle of the 3rd center of circle of justifying and the first circle and the plate at pin hole place is relevant, and circular arc and first circular arc justified of the 3rd circle are tangent in intersection.
In one embodiment, first circle, second circle and the 3rd circle the center of circle located on a straight line, second circle the center of circle be positioned at first circle the center of circle directly over, the 3rd circle the center of circle be positioned at first circle the center of circle immediately below.
In one embodiment, assemblage gap is 20mm.
In one embodiment, correcting gap is 1mm.
Pin hole of the present utility model reduces the diameter of upper edge portion and lower edge part, make the diameter of upper edge portion and lower edge part more close to the diameter of bolt axle, make bolt axle can have the higher goodness of fit when stressed, improve centering capacity, avoid because bolt axle offsets the problem that the pin hole edge deformation that causes makes bolt axle stuck.
Accompanying drawing explanation
The above and other feature of the utility model, character and advantage are by more obvious by what become below in conjunction with the description of drawings and Examples, and Reference numeral identical in the accompanying drawings represents identical feature all the time, wherein:
Fig. 1 a and Fig. 1 b discloses in prior art the shape adopting pin hole.
Fig. 2 a and Fig. 2 b discloses the centering capacity of pin hole of the prior art.
Fig. 3 discloses the shape of the pin hole according to an embodiment of the present utility model.
Fig. 4 discloses the centering capacity of the pin hole according to an embodiment of the present utility model.
Detailed description of the invention
By the working condition of the spud leg of research hydraulic bolt lifting type platform, what find actual bearing load on actual pin hole only has upper edge portion and lower edge part:
Under towage operating mode, hydraulic bolt lifting type platform is when towage, and the upper limb of spud leg pin hole contacts with bolt axle.
Under lifting operating mode, the spud leg of hydraulic bolt lifting type platform in below only in the seawater time, the upper limb of spud leg pin hole contacts with bolt axle.Touch seabed bottom spud leg after, the lower edge of spud leg pin hole contacts with bolt axle.
Under decline operating mode, when hydraulic bolt lifting type platform declines, hull enters water until before reaching buoyant equilibrium, and spud leg pin hole lower edge contacts with bolt axle.After reaching buoyant equilibrium, when pile pulling and rising spud leg, the upper limb of spud leg pin hole contacts with bolt axle.
Known by above-mentioned operating mode, on pin hole, bearing load is upper edge portion and lower edge part.The upper edge portion of the goose egg type pin hole shown in composition graphs 1a and Fig. 1 b, Fig. 1 a is 121, and lower edge is divided into the upper edge portion of the square pin hole shown in 122, Fig. 1 b to be 141, and lower edge is divided into 142.Upper edge portion and lower edge part represent with thick dashed line in Fig. 1 a and Fig. 1 b.In the course of work of pin hole, bolt axle can move around between upper edge portion and lower edge are divided, but the only pin hole just bearing load when bolt axle and upper edge portion and lower edge part contact, at all the other position pin holes not bearing load.Therefore, bolt axle only needs to ensure that when the upper edge portion and lower edge part contact with pin hole position is accurate, pin hole can either be made correctly stressed, there will not be the situation of stressed skew.When upper edge portion or the lower edge part contact of bolt axle not with pin hole, certain displacement can be allowed.
Fig. 2 a and Fig. 2 b discloses the centering capacity of pin hole of the prior art.Because the direction of the load of pin hole and bolt axle is vertically, if therefore the center of bolt axle be positioned at pin hole all the time center directly over or immediately below (be namely positioned on same vertical curve, the center line of bolt axle overlaps with the center line of pin hole in other words), so bolt axle is exactly correct location.If skew has appearred in the center line of bolt axle, so just there is displacement in bolt axle, can cause the torsion of spud leg or Ship Structure.Make the edge of pin hole stressed, cause the edge deformation of pin hole.Fig. 2 a and Fig. 2 b discloses the centering capacity of goose egg type pin hole and the square pin hole adopted in prior art.In Fig. 2 a and Fig. 2 b, alphabetical designation A, B, C, A ', B ', C ' the center point that is bolt axle during different conditions: theory when alphabetical designation C represents that bolt axle inserts pin hole with regard to site (correctly with regard to site), alphabetical designation C ' for misplace when bolt axle inserts pin hole with regard to site.Alphabetical designation A be the theory at bolt axle bolt axle center when contacting with the upper edge portion of pin hole with regard to site (correctly with regard to site), the center point of bolt axle when bolt axle contacts with the upper edge portion of pin hole when alphabetical designation A ' is dislocation.When alphabetical designation B is the lower edge part contact of bolt axle and pin hole, the theory at bolt axle center is with regard to site (correctly with regard to site), the center point of bolt axle when bolt axle and the lower edge part contact of pin hole when alphabetical designation B ' is dislocation.In Fig. 2 a and Fig. 2 b, the outline of solid line represents pin hole, pin hole, and the pin hole in Fig. 2 a is goose egg type, and the pin hole in Fig. 2 b is square.In Fig. 2 a and Fig. 2 b, the Internal periphery of dotted line represents bolt axle, and the bolt axle in Fig. 2 a is circular, and the bolt axle in Fig. 2 b is square.
With reference to figure 2a, for pin hole and the circular bolt axle of goose egg type, if there is skew when installing bolt axle, namely the position that C ' puts deviate from the position of C point, when bolt axle contacts with the upper edge portion of pin hole, A ' point still can offset with A point, and reason remains assemblage gap between the upper edge portion of goose egg type pin hole and bolt axle, bolt axle can move in assemblage gap, thus departs from the center line of its theory.When the lower edge part contact of bolt axle and pin hole, owing to not retaining assemblage gap between the lower edge part of goose egg type pin hole and bolt axle, gap between the diameter of the lower edge part of pin hole and bolt axle is within 1mm, therefore bolt axle does not almost have mobile space in pin hole, B ' point can not depart from B point, but overlaps with B point.Therefore, the pin hole of goose egg type possesses certain centering capacity, when bolt axle contacts with the lower edge of pin hole, can correction of deviation automatically, and make bolt axle get back to correct position.
With reference to figure 2b, for square pin hole and square bolt axle, if there is skew when installing bolt axle, namely the position that C ' puts deviate from the position of C point, when bolt axle contacts with the upper edge portion of pin hole, A ' point can offset with A point, and reason remains assemblage gap between the upper edge portion of square pin hole and bolt axle, bolt axle can move in assemblage gap, thus departs from the center line of its theory.When the lower edge part contact of bolt axle and pin hole, B ' point also can offset with B point, and reason also has assemblage gap between the lower edge part of square pin hole and bolt axle, and bolt axle can move in assemblage gap, thus depart from the center line of its theory.Therefore, square pin hole does not have centering capacity.
Fig. 3 discloses the shape of the pin hole according to an embodiment of the present utility model.As shown in Figure 3, this pin hole comprises mid portion 201, rising wood 202 and lower edge 203.This pin hole coordinates with circular bolt axle 204.The difference of the diameter of mid portion 201 and the diameter of bolt axle 204 is more than or equal to assemblage gap, and rising wood 202 and lower edge 203 are less than or equal to the difference of the diameter of bolt axle corrects gap.
In one embodiment, mid portion 201 is a part for the first circle, and namely the first circle clips the mid portion at two ends.The difference of the diameter of the first diameter of a circle and bolt axle is more than or equal to assemblage gap.In one embodiment, assemblage gap is 20mm.Rising wood 202 is a part for the second circle, the difference of the diameter of the second diameter of a circle and bolt axle is less than or equal to corrects gap, the thickness of slab of the distance between the center of circle of the second circle and the center of circle of the first circle and the plate at pin hole place is relevant, and the center of circle of the second circle is positioned at the top in the center of circle of the first circle.Rising wood 202 is the first half of the second circle, till the second circle and the first circle intersection.In one embodiment, the circular arc of the second circular arc justified and the first circle is tangent in intersection, to ensure that the circular arc of two circles can smoothly transit.Lower edge 203 is a part for the 3rd circle, the difference of the diameter of the 3rd diameter of a circle and bolt axle is less than or equal to corrects gap, the thickness of slab of the distance between the center of circle of the 3rd circle and the center of circle of the first circle and the plate at pin hole place is relevant, lower edge 203 is the latter half of the 3rd circle, till the 3rd circle and the first circle intersection.In one embodiment, the circular arc of the 3rd circular arc justified and the first circle is tangent in intersection, to ensure that the circular arc of two circles can smoothly transit.Continue with reference to shown in figure 3, the center of circle of the first circle, the second circle and the 3rd circle is located on a straight line, i.e. the center line of pin hole.The thickness of slab of the distance between the center of circle of the second circle, the 3rd circle and the center of circle of the first circle and the plate at pin hole place is relevant.The difference of the diameter of the second circle, the 3rd diameter of a circle and bolt axle is less than or equal to corrects gap, and correcting gap is in one embodiment 1mm.
Fig. 4 discloses the centering capacity of the pin hole according to an embodiment of the present utility model.Similar with aforesaid Fig. 2 a, Fig. 2 b, alphabetical designation A, B, C, A ', B ', C ' the center point that is bolt axle during different conditions in the diagram: theory when alphabetical designation C represents that bolt axle inserts pin hole with regard to site (correctly with regard to site), alphabetical designation C ' for misplace when bolt axle inserts pin hole with regard to site.Alphabetical designation A be the theory at bolt axle bolt axle center when contacting with the upper edge portion of pin hole with regard to site (correctly with regard to site), the center point of bolt axle when bolt axle contacts with the upper edge portion of pin hole when alphabetical designation A ' is dislocation.When alphabetical designation B is the lower edge part contact of bolt axle and pin hole, the theory at bolt axle center is with regard to site (correctly with regard to site), the center point of bolt axle when bolt axle and the lower edge part contact of pin hole when alphabetical designation B ' is dislocation.With reference to figure 4, for pin hole of the present utility model and circular bolt axle, if there is skew when installing bolt axle, namely the position that C ' puts deviate from the position of C point, when bolt axle contacts with the upper edge portion of pin hole, because the rectification gap between upper edge portion and bolt axle is less than 1mm, therefore bolt axle does not almost have mobile space in pin hole, A ' point can not depart from A point, but overlaps with A point.Similar, when the lower edge part contact of bolt axle and pin hole, because the rectification gap between lower edge part and bolt axle is also less than 1mm, therefore bolt axle does not have mobile space in pin hole yet, and B ' point can not depart from B point equally, but overlaps with B point.So pin hole of the present utility model all has centering capacity for upper limb and lower edge, when the upper limb of bolt axle and pin hole or lower edge contact, can both correction of deviation automatically, make bolt axle get back to correct position.
Meanwhile, owing to remaining assemblage gap at mid portion, bolt axle still can be come in and gone out pin hole easily.
Pin hole of the present utility model reduces the diameter of upper edge portion and lower edge part, make the diameter of upper edge portion and lower edge part more close to the diameter of bolt axle, make bolt axle can have the higher goodness of fit when stressed, improve centering capacity, avoid because bolt axle offsets the problem that the pin hole edge deformation that causes makes bolt axle stuck.
Above-described embodiment is available to be familiar with person in the art to realize or to use of the present utility model; those skilled in the art can when not departing from utility model thought of the present utility model; various modifications or change are made to above-described embodiment; thus protection domain of the present utility model not limit by above-described embodiment, and should be the maximum magnitude meeting the inventive features that claims are mentioned.
Claims (9)
1. a pin hole, is characterized in that, for elevating mechanism, described pin hole comprises mid portion, rising wood and lower edge;
The difference of the diameter of described mid portion and the diameter of bolt axle is more than or equal to assemblage gap;
The difference of the diameter of described rising wood and lower edge and bolt axle is less than or equal to corrects gap.
2. pin hole as claimed in claim 1, is characterized in that, described mid portion is a part for the first circle, and the difference of the diameter of described first diameter of a circle and bolt axle is more than or equal to assemblage gap.
3. pin hole as claimed in claim 2, is characterized in that, described rising wood is a part for the second circle, and the difference of the diameter of described second diameter of a circle and bolt axle is less than or equal to corrects gap, and the center of circle of described second circle is positioned at the top in the center of circle of the first circle.
4. pin hole as claimed in claim 3, is characterized in that, the distance between the center of circle of described second circle and the center of circle of the first circle is relevant with the thickness of slab of the plate at pin hole place, the circular arc of described second circle and the first round circular arc tangent in intersection.
5. pin hole as claimed in claim 3, is characterized in that, described lower edge is a part for the 3rd circle, and the difference of the diameter of described 3rd diameter of a circle and bolt axle is less than or equal to corrects gap, and the center of circle of described 3rd circle is positioned at the below in the center of circle of the first circle.
6. pin hole as claimed in claim 5, is characterized in that, the distance between the center of circle of described 3rd circle and the center of circle of the first circle is relevant with the thickness of slab of the plate at pin hole place, the circular arc of described 3rd circle and the first round circular arc tangent in intersection.
7. pin hole as claimed in claim 5, is characterized in that, the center of circle of described first circle, the second circle and the 3rd circle is located on a straight line, and directly over the center of circle that the center of circle of the second circle is positioned at the first circle, the center of circle of the 3rd circle is positioned at immediately below the center of circle of the first circle.
8. pin hole as claimed in claim 1, it is characterized in that, described assemblage gap is 20mm.
9. pin hole as claimed in claim 1, it is characterized in that, described rectification gap is 1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520793165.9U CN205062786U (en) | 2015-10-14 | 2015-10-14 | Bolt hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520793165.9U CN205062786U (en) | 2015-10-14 | 2015-10-14 | Bolt hole |
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| Publication Number | Publication Date |
|---|---|
| CN205062786U true CN205062786U (en) | 2016-03-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520793165.9U Active CN205062786U (en) | 2015-10-14 | 2015-10-14 | Bolt hole |
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| Country | Link |
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| CN (1) | CN205062786U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107487420A (en) * | 2017-08-11 | 2017-12-19 | 上海船舶研究设计院（中国船舶工业集团公司第六0四研究院） | Tensile force correcting mechanism, installation method, umbilical paving system and ship |
-
2015
- 2015-10-14 CN CN201520793165.9U patent/CN205062786U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107487420A (en) * | 2017-08-11 | 2017-12-19 | 上海船舶研究设计院（中国船舶工业集团公司第六0四研究院） | Tensile force correcting mechanism, installation method, umbilical paving system and ship |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |