CN203889958U - Crane and boom thereof - Google Patents
Crane and boom thereof Download PDFInfo
- Publication number
- CN203889958U CN203889958U CN201420346588.1U CN201420346588U CN203889958U CN 203889958 U CN203889958 U CN 203889958U CN 201420346588 U CN201420346588 U CN 201420346588U CN 203889958 U CN203889958 U CN 203889958U
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- CN
- China
- Prior art keywords
- side wall
- jib
- wall surface
- opening area
- lightening hole
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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.)
- Withdrawn - After Issue
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Abstract
The utility model discloses a crane and a boom thereof. At least one weight-lightening hole is formed in a region, where the hole can be opened, on the side wall face of the boom; the minimum distance between the left outline of the region where the hole can be opened and the left outline of the side wall face of the boom, and the minimum distance between the right outline of the region where the hole can be opened and the right outline of the side wall face of the boom are 1/10-1/9 of the vertical maximum size of the side wall face of the boom; the minimum distance between the upper outline of the region where the hole can be opened and the upper outline of the side wall face of the boom, and the minimum distance between the lower outline of the region where the hole can be opened and the lower outline of the side wall face of the boom are 1/4-1/3 of the transverse maximum size of the side wall face of the boom; the maximum sizes of the weight-lightening holes in the transverse and vertical directions of the side wall face of the boom are 1/4-1/3 of the transverse maximum size of the side wall face of the boom and are 2-3 times as much as the transverse maximum size of the side wall face of the boom; the sum of section areas of the weight-lightening holes is not greater than 35%-40% of the area of the region where the hole can be opened. According to the boom in the crane disclosed by the utility model, the service lives of all parts tend to be consistent under the precondition of meeting the fatigue life requirements; the weight of the boom can be relieved, and the performance of the boom can be improved.
Description
Technical field
The utility model relates to elevator machinery, relates in particular to a kind of hoisting crane and jib thereof
Background technology
Long-armed is the important component part of many goliath products, is the key structure that can hoisting crane normally work.Yet in real work, jib is frequent owing to using, indivedual parts (position) wherein easily form endurance failure, and then cause whole hoisting crane normally to work; Thus, to client, bring huge loss, cause great waste, be unfavorable for the competitive power of enterprise product.As can be seen here, jib is as the main load bearing component of hoisting crane, and its intensity and deadweight are directly connected to safety and the performance of hoisting crane.For met design requirement the fatigue life of jib, conventionally use high strength material to strengthen jib intensity, this can strengthen jib and complete machine weight undoubtedly, and it is helpless to improving product performance, but greatly increases manufacturing cost.
Utility model content
In view of this, the utility model provides a kind of crane arm support, can meet on the basis of Fatigue life design requirement, alleviates jib weight.
For solving above technical matters, the crane arm support that the utility model provides, its technical scheme is: jib side wall surface can in opening area, offer at least one lightening hole, wherein: described can opening area profile and jib side wall surface gabarit between meet the following conditions: described can opening area left profile and the left outside exterior feature of jib side wall surface between minor increment be jib side wall surface longitudinally maximum sized 1/10～1/9; Described can the right profile of opening area and the right outside exterior feature of jib side wall surface between minor increment be jib side wall surface longitudinally maximum sized 1/10～1/9; Described can opening area on profile and jib side wall surface the minor increment between gabarit be 1/4～1/3 of jib side wall surface horizontal maximum size; Described can opening area bottom profiled and jib side wall surface under minor increment between gabarit be 1/4～1/3 of jib side wall surface horizontal maximum size; Described lightening hole is 1/4～1/3 of jib side wall surface horizontal maximum size at the horizontal upperlimit of jib side wall surface; Described lightening hole jib side wall surface longitudinally upperlimit be 2～3 times of jib side wall surface horizontal maximum size; The sectional area sum of described lightening hole be not more than described can opening area area 35%～40%.
Preferably, described lightening hole is a plurality of, and the minor increment between adjacent lightening hole profile is not less than half of distance at adjacent lightening hole center.
Preferably, described lightening hole is circular hole, and diameter is not more than 1/4～1/3 of jib side wall surface horizontal maximum size.
Preferably, described lightening hole is elliptical aperture, and minor axis is not more than 1/4～1/3 of jib side wall surface horizontal maximum size, and major axis is not more than 2 times of minor axis, and long axis direction is that jib is axial.
Preferably, described lightening hole is slotted hole, and lateral dimension is not more than 1/4～1/3 of jib side wall surface horizontal maximum size, the maxim of longitudinal size is lateral dimension 1.5～2 times.
Preferably, the head end of jib and/or tail end are provided with bearing pin; Described can opening area profile and the minor increment of bearing pin inner side be 10cm～20cm.
Preferably, the middle part of jib arranges an oil cylinder seat; Described can approaching on the left of oil cylinder seat by the right profile of opening area.
Preferably, jib is the box type construction that top board, base plate and side plate form.
Preferably, described can opening area on profile, described can opening area bottom profiled and the ultimate range of side plate line of centers be respectively 1/8～1/6 of side plate width.
Preferably, in jib, be folded with some horizontal brace panels; Describedly can approach leftmost side brace panel by opening area left profile.
Hoisting crane on this basis, comprises above-described crane arm support.
Compared with prior art, the utility model is based on balanced life design philosophy, on jib, offer lightening hole, the life-span at jib all parts or position is reached unanimity as far as possible, the structure optimization of realization to jib, in the situation that meeting Fatigue life design requirement, farthest alleviate jib weight, promote the performance of jib and reduce costs.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the utility model crane arm support;
Fig. 2 is the structural representation of one application example of jib shown in Fig. 1.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment, be elaborated.A lot of details have been set forth in the following description so that fully understand the utility model.But the utility model can be implemented to be much different from alternate manner described here, those skilled in the art can do similar popularization without prejudice to the utility model intension in the situation that, so the utility model is not subject to the restriction of following public specific embodiment.
Basic conception of the present utility model is, at jib side wall surface, can in opening area, offer at least one lightening hole.Obviously, for guaranteeing to meet Fatigue life design requirement, the key elements such as the size of lightening hole, shape and position of opening are carried out certain limitation and optimization, below in conjunction with accompanying drawing and specific embodiment, describe.
Refer to Fig. 1, this figure is the schematic diagram of the utility model crane arm support.On this crane arm support, lightening hole is set, these lightening holes not can arbitrarily be offered, otherwise will seriously damage jib.In fact, the mode of offering of the lightening hole in the present embodiment be through repeatedly, strict l-G simulation test and the result of in-place test, the key elements such as the size of these lightening holes, shape and position of opening form an organic whole, on the basis that meets Fatigue life design requirement, reach thus the object that alleviates jib weight, below describe in detail.
As shown in Figure 1, in this jib 100, can opening area profile 2 and jib side wall surface gabarit 1 between relative position relation meet following condition:
Can opening area left profile and the left outside exterior feature of jib side wall surface between minor increment L1 be 1/10～1/9 of the longitudinal upperlimit L of jib side wall surface;
Can the right profile of opening area and the right outside exterior feature of jib side wall surface between minor increment L2 be 1/10～1/9 of the longitudinal upperlimit L of jib side wall surface;
On can opening area, on profile and jib side wall surface, the minor increment H1 between gabarit be 1/4～1/3 of jib side wall surface horizontal maximum size H;
Can opening area bottom profiled and jib side wall surface under minor increment H2 between gabarit be 1/4～1/3 of jib side wall surface horizontal maximum size H.
For the size of lightening hole 3, should meet following condition:
Lightening hole is 1/4～1/3 of jib side wall surface horizontal maximum size H at the horizontal upperlimit D2 of jib side wall surface;
Lightening hole jib side wall surface longitudinally upperlimit D1 be 2～3 times of jib side wall surface horizontal maximum size H.
Meanwhile, the sectional area sum of lightening hole 3 be not more than can opening area area 35%～40%.
Because above-mentioned fatigue life that can opening area is on 5% times of jib maximum life value, and the stress that this can opening area is relatively little, less on jib impact fatigue life after perforate, is conducive to guarantee the safety of jib.
Especially, in the situation that offering a plurality of lightening hole, the interval of lightening hole also should be limited, and the minor increment d2 between its adjacent lightening hole profile is not less than half of distance d1 at adjacent lightening hole center.
As shown in Figure 1, the shape of lightening hole 3 can be multiple: for example, lightening hole 3 is circular hole, and diameter D is not more than 1/4～1/3 of jib side wall surface horizontal maximum size H; For another example, lightening hole 3 is elliptical aperture, and minor axis b is not more than 1/4～1/3 of jib side wall surface horizontal maximum size H, and major axis a is not more than 2 times of minor axis b, and long axis direction is that jib is axial; And for example, lightening hole 3 is slotted hole, and lateral dimension D2 is not more than 1/4～1/3 of jib side wall surface horizontal maximum size, and the maxim of longitudinal size D1 is 2 times of lateral dimension D2.
Be pointed out that, when jib arranges bearing pin and oil cylinder seat, also reply can add sternly by opening area: if jib is provided with bearing pin, meeting on aforementioned condition basis, can should approach bearing pin inner side by opening area profile; If when jib middle part arranges oil cylinder seat, should make to approach oil cylinder seat by the right profile of opening area.
Refer to Fig. 2, this figure is the structural representation of one application example of jib shown in Fig. 1.This jib 100, by a top board 11, a base plate 12 and biside plate 13, forms box type construction; Some brace panels 14, along jib lateral arrangement, for strengthening the structural strength of jib; One oil cylinder seat 15, is arranged on jib middle part, for hinged driving oil cylinder (scheming not shown); Bearing pin 16, is arranged on head end A and/or the tail end B of jib 100, for realizing the rotation of jib.
For this kind of box type construction, can meet by opening area region S:
The ultimate range H3 of profile and side plate line of centers on can opening area, can opening area bottom profiled and the ultimate range H4 of side plate line of centers be respectively 1/8～1/6 of side plate width H0.
Because bearing pin 16 is set, can opening area profile and the minor increment D3 of bearing pin inner side be 10cm～20cm., because being provided with brace panel 14 and oil cylinder seat 15, should further make: can approach leftmost side brace panel 14 by opening area left profile, can approach oil cylinder seat 15 left sides by the right profile of opening area meanwhile.
The product life that the utility model is concerned about from user most based on balanced life design philosophy, is offered some lightening holes 3, rather than is pursued simply the reinforcement in intensity on jib 100; Thus, in the structure optimization that guarantees to realize on constant basis of life-span jib 100, improve the performance of jib 100.Particularly: by offering lightening hole 3,100 each position life-spans of jib are reached unanimity, realize the loss of weight of jib 100, reduce production costs; Meanwhile, increase the flexibility of jib 100, realize the passive vibration damping of jib 100, improve the resistance to shock of jib 100; In addition, also can improve the alerting ability of jib 100, promote the work efficiency of jib 100.
Below be only preferred implementation of the present utility model, it should be pointed out that above-mentioned preferred implementation should not be considered as restriction of the present utility model, protection domain of the present utility model should be as the criterion with claim limited range.For those skilled in the art, within not departing from spirit and scope of the present utility model, can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (10)
1. a crane arm support, it is characterized in that, jib side wall surface can in opening area, offer at least one lightening hole, described can opening area profile and jib side wall surface gabarit between meet the following conditions: described can opening area left profile and the left outside exterior feature of jib side wall surface between minor increment be jib side wall surface longitudinally maximum sized 1/10～1/9; Described can the right profile of opening area and the right outside exterior feature of jib side wall surface between minor increment be jib side wall surface longitudinally maximum sized 1/10～1/9; Described can opening area on profile and jib side wall surface the minor increment between gabarit be 1/4～1/3 of jib side wall surface horizontal maximum size; Described can opening area bottom profiled and jib side wall surface under minor increment between gabarit be 1/4～1/3 of jib side wall surface horizontal maximum size; Described lightening hole is 1/4～1/3 of jib side wall surface horizontal maximum size at the horizontal upperlimit of jib side wall surface; Described lightening hole jib side wall surface longitudinally upperlimit be 2～3 times of jib side wall surface horizontal maximum size; The sectional area sum of described lightening hole be not more than described can opening area area 35%～40%.
2. crane arm support as claimed in claim 1, is characterized in that, described lightening hole is a plurality of, and the minor increment between adjacent lightening hole profile is not less than half of distance at adjacent lightening hole center.
3. crane arm support as claimed in claim 1, is characterized in that, described lightening hole is circular hole, and diameter is not more than 1/4～1/3 of jib side wall surface horizontal maximum size.
4. crane arm support as claimed in claim 1, is characterized in that, described lightening hole is elliptical aperture, and minor axis is not more than 1/4～1/3 of jib side wall surface horizontal maximum size, and major axis is not more than 2 times of minor axis, and long axis direction is that jib is axial.
5. crane arm support as claimed in claim 1, is characterized in that, described lightening hole is slotted hole, and lateral dimension is not more than 1/4～1/3 of jib side wall surface horizontal maximum size, the maxim of longitudinal size is lateral dimension 1.5～2 times.
6. crane arm support as claimed in claim 1, is characterized in that, head end and/or the tail end of jib are provided with bearing pin; Described can opening area profile and the minor increment of bearing pin inner side be 10cm～20cm.
7. crane arm support as claimed in claim 6, is characterized in that, the middle part of jib arranges an oil cylinder seat; Described can approaching on the left of oil cylinder seat by the right profile of opening area.
8. crane arm support as claimed in claim 1, is characterized in that, jib is the box type construction that top board, base plate and side plate form; Described can opening area on profile, described can opening area bottom profiled and the ultimate range of side plate line of centers be respectively 1/8～1/6 of side plate width.
9. crane arm support as claimed in claim 8, is characterized in that, is folded with some horizontal brace panels in jib; Describedly can approach leftmost side brace panel by opening area left profile.
10. a hoisting crane, is characterized in that, comprises the crane arm support as described in claim 1～9 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420346588.1U CN203889958U (en) | 2014-06-25 | 2014-06-25 | Crane and boom thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420346588.1U CN203889958U (en) | 2014-06-25 | 2014-06-25 | Crane and boom thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203889958U true CN203889958U (en) | 2014-10-22 |
Family
ID=51716386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420346588.1U Withdrawn - After Issue CN203889958U (en) | 2014-06-25 | 2014-06-25 | Crane and boom thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203889958U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104071708A (en) * | 2014-06-25 | 2014-10-01 | 诸暨市沃思环保技术有限公司 | Crane and arm frame thereof |
-
2014
- 2014-06-25 CN CN201420346588.1U patent/CN203889958U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104071708A (en) * | 2014-06-25 | 2014-10-01 | 诸暨市沃思环保技术有限公司 | Crane and arm frame thereof |
| CN104071708B (en) * | 2014-06-25 | 2016-02-24 | 周磊 | Hoisting crane and jib thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141022 Effective date of abandoning: 20160224 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |