CN203296390U - Cantilever crane and engineering machinery - Google Patents
Cantilever crane and engineering machinery Download PDFInfo
- Publication number
- CN203296390U CN203296390U CN2013202600913U CN201320260091U CN203296390U CN 203296390 U CN203296390 U CN 203296390U CN 2013202600913 U CN2013202600913 U CN 2013202600913U CN 201320260091 U CN201320260091 U CN 201320260091U CN 203296390 U CN203296390 U CN 203296390U
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- joint
- jib
- arm joint
- end arm
- arm
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- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The utility model discloses a cantilever crane and engineering machinery with the cantilever crane. The cantilever crane is an R-shaped foldable cantilever crane and comprises a plurality of arm sections which are sequentially hinged. When the cantilever crane is in a folded state, the tail end arm section (4) in the arm sections and the secondary tail end arm section (3) adjacent to the tail end arm section are arranged in the same straight line or basically in the same straight line. Due to the fact that the tail end arm section and the secondary tail end arm section can be mutually folded inwards, the material distributing height is equal to the length sum of all other arm sections except the tail end arm section when the cantilever crane is opened to distribute materials. Furthermore, when the cantilever crane is in the folded state, the tail end arm section and the secondary tail end arm section are arranged in the same straight line or basically in the same straight line. Thus, the effective material distributing height of the cantilever crane can be improved without affecting the folded state of the cantilever crane. When the cantilever crane is folded inwards, no material distributing dead zone is generated between the secondary tail end arm section and the middle arm section adjacent to the secondary tail end arm section, and accordingly a material distributing range on the plane cannot be affected.
Description
Technical field
The utility model relates to engineering machinery field, particularly, relates to a kind of jib and the engineering machinery that comprises this jib.
Background technology
At present, in short-and-medium arm rack concrete pump truck, jib is generally the structure of four joint arms or five joint arms.Referring to Fig. 1 and Fig. 2, shown that the R type foldable arm rack of four joint arms is in respectively the situation of complete folded state and duty.This foldable arm rack comprises the first connected arm joint, the second arm joint, the 3rd arm joint and the 4th arm joint from the bottom to top successively.Wherein, the 4th arm joint is substantially suitable with the length of the 3rd arm joint, and when this R type foldable arm rack work, effectively the cloth height is roughly the length sum of first three arm joint.As can be seen here, although the foldable arm rack of R type is convenient folding, affected to a certain extent effective cloth height of concrete mixer.
Referring to Fig. 3 and Fig. 4, shown that the RZ type foldable arm rack of five joint arms is in respectively the situation of complete folded state and open mode.This foldable arm rack comprises the first connected arm joint, the second arm joint, the 3rd arm joint, the 4th arm joint and the 5th arm joint from the bottom to top successively.When folded state, the 4th arm joint of RZ type foldable arm rack and the 5th arm joint roughly are in straight line and are the phase inverse folding with respect to the 3rd arm joint, thereby form Z-shaped structure.When open mode was carried out cloth, effectively the cloth height can be roughly the length sum of front four arms joint, had overcome the relatively low problem of the above-mentioned four joint effective cloth height of arm.But due to opposite foldable structure, making the 4th arm joint is 200～270 ° with respect to the maximum anglec of rotation of the 3rd arm joint, and namely between the 4th arm joint and the 3rd arm joint, having about angle [alpha] is the cloth blind area of 90～160 °, causes cloth range limited.
The utility model content
The purpose of this utility model is to provide a kind of foldable arm rack, and this foldable arm rack can improve effective cloth height and not affect the cloth scope.
To achieve these goals, the utility model provides a kind of jib, this jib is R type foldable arm rack and comprises hinged successively a plurality of arm joints, wherein, described jib be configured under the folding rounding state end arm joint in described a plurality of arms joints and the inferior end arm section adjacent with this end arm joint in or substantially be in same straight line.
Preferably, described end arm saves can be inwardly folding with respect to described end arm joint by the first telescoping cylinder, and the two ends of described the first telescoping cylinder are hinged on respectively described end arm joint and described end arm saves.
Preferably, can be relative to each other inwardly folding by fold mechanism between other arbitrary neighborhood two joint arm joints of described jib.
Preferably, described fold mechanism comprises the first junction plate, the second junction plate and the second telescoping cylinder, one end of described the first junction plate is hinged on an arm joint in adjacent two arms joint, one end of described the second junction plate is hinged on another arm joint in adjacent two arms joint, and the other end of the other end of described the first junction plate and described the second junction plate is hinged, the arm joint that one end of described the second telescoping cylinder is hinged in adjacent two arms joint is upper, and the other end of described the second telescoping cylinder is hinged on the other end of described the first junction plate.
Preferably, described jib comprises five hinged successively arm joints, and these five arm joints are respectively head end arm joint, two insert jib sections, inferior end arm joint and end arm joints.
Another purpose of the present utility model is to provide a kind of engineering machinery, and this project machinery can improve effective cloth height and not affect the cloth scope.
In order to realize above-mentioned another purpose, the utility model provides a kind of engineering machinery that comprises above-mentioned jib, and the described head end arm joint of described jib is hinged on described engineering machinery.
Preferably, on described engineering machinery, be provided with slew gear, described head end arm joint is hinged on this slew gear.
Preferably, described engineering machinery is concrete mixer.
In jib of the present utility model, because end arm joint and time end arm are energy-conservation enough inwardly folding each other, thereby open while carrying out cloth at jib, the cloth height can equal the length sum of other all the arm joints except end arm joint, and under folding rounding state, end arm joint and time end arm section in or substantially be in same straight line, thereby can on the basis that does not affect the arm support folding rounding state, improve effective cloth height of jib.And due to inwardly folding, inferior end arm saves and saves between adjacent insert jib section and do not have the cloth blind area with inferior end arm.In other words, jib of the present utility model can not affect cloth scope in the plane on the basis of improving effective cloth height.
Other feature and advantage of the present utility model will partly be described in detail in the specific embodiment subsequently.
The accompanying drawing explanation
Accompanying drawing is to be used to provide further understanding of the present utility model, and forms the part of manual, with the following specific embodiment one, is used from explanation the utility model, but does not form restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the schematic diagram that the R type foldable arm rack of four joint arms in prior art is in complete folded state;
Fig. 2 is the in running order schematic diagram of R type foldable arm rack of four joint arms in prior art;
Fig. 3 is the schematic diagram that the RZ type foldable arm rack of five joint arms in prior art is in complete folded state;
Fig. 4 is the schematic diagram that the RZ type foldable arm rack of five joint arms in prior art is in open mode;
Fig. 5 is the schematic diagram that is in complete folded state of jib of the present utility model;
Fig. 6 is the schematic diagram that is in open mode of jib of the present utility model;
Fig. 7 is the enlarged diagram of part-structure in Fig. 6.
Description of reference numerals
Jib in the middle of 1 head end arm joint 2
3 end arm joint 4 end arm joints
5 first telescoping cylinder 6 fold mechanisms
7 slew gear 61 first junction plates
62 second junction plate 63 second telescopic oil cylinders
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is elaborated.Should be understood that, the specific embodiment described herein only, for description and interpretation the utility model, is not limited to the utility model.
Referring to Fig. 5 to Fig. 7, the utility model relates to a kind of jib, and this jib can be for various engineering machineries such as concrete mixer, concrete sprayer or other material distributing machine.Described jib is R type foldable arm rack and comprises hinged a plurality of arms joint successively, thus a plurality of arms joints can be defined as respectively successively head end arm joint 1, end arm joint 4, inferior end arm joint 3 adjacent with end arm joint 4 and head end arm save 1 and inferior end arm save the insert jib section 2 between 3.In the utility model, with jib, comprise that five hinged successively arm joints are illustrated, thereby five arm joints can be respectively 1, two insert jib section 2 of head end arm joint and end arm joint 4, still, the number of a plurality of arm joints is not limited to this.
In above-mentioned definition, head end arm joint 1 refers to that jib is in when open mode is carried out cloth the arm joint that is positioned at bottom, and end arm joint 4 refers to that being positioned at the arm that carries out the cloth operation topmost saves.As known to those skilled in the art, R type foldable arm rack is the energy-conservation enough jibs that inwardly folds relative to each other of arm that any two joints are adjacent.So-called " inwardly folding " refers to that jib is converted to the process of folded state from the cloth state, and alternate arm is in the arm joint of top towards the folding also close folding mode that is in the arm joint of below of a side that is provided with fold mechanism (hereinafter will be described in detail fold mechanism) in saving.
Be different from prior art, jib of the present utility model can be configured under folding rounding state, and the end arm joint 4 in a plurality of arm joints is in or substantially is in same straight line (as shown in Figure 5) with the inferior end arm joint 3 adjacent with this end arm joint 4.Wherein, " folding rounding state " refer to when jib does not carry out the cloth operation its folding state of regaining and being placed on concrete mixer etc., and do not comprise that end arm joint 4 and time end arm save 3 states that also are folded each other.
Be appreciated that, adopt the jib of this structure when carrying out the cloth operation, the cloth height can equal the length sum of other all the arm joints except end arm joint 4, thereby can on the basis that does not affect the arm support folding rounding state, improve effective cloth height of jib.In addition, owing between inferior end arm joint 3 and the insert jib section 2 adjacent with inferior end arm joint 3, be inwardly to fold, thereby compare with RZ type foldable arm rack, when cloth, there do not is the cloth blind area between time end arm joint 3 and the insert jib section 2 adjacent with inferior end arm joint 3.In other words, jib of the present utility model can not affect cloth scope in the plane on the basis of improving effective cloth height.
In folding rounding state, because end arm joint 4 and time end arm joint 3 are in or substantially are in same straight line, end arm joint 4 will fold with respect to the insert jib section 2 adjacent with inferior end arm joint 3 again with time end arm joint 3 simultaneously, therefore can be by end arm joint 4 and time length of end arm joint 3 and can be unrestricted, namely can be set to greater than, less than or substantially equal the length of the insert jib section 2 that time end arm joint 3 is adjacent, all can reach the purpose that improves effective cloth height and be convenient to fold.
Preferably, end arm joint 4 and time length sum of end arm joint 3 equal the length of the insert jib section 2 adjacent with inferior end arm joint 3, to improve as much as possible effective cloth height of jib.In addition, end arm joint 4 and time end arm joint 3 length separately can be set according to actual needs, to adapt to different cloth scopes.
In the multiple specific embodiment, end arm joint 4 can by various structures realizes with time end arm joint 3 between mutual folding.For example, referring to Fig. 6, end arm joint 4 can be inwardly folding with respect to inferior end arm joint 3 by the first telescoping cylinder 5, and the two ends of the first telescoping cylinder 5 are hinged on respectively on end arm joint 4 and time end arm joint 3.Described the first telescoping cylinder 5 can be hydraulic cylinder, but is not limited to hydraulic cylinder.
In addition, can be relative to each other inwardly folding by fold mechanism 6 between other arbitrary neighborhood two polar arm joints of jib.
Particularly, as shown in Figure 7, described fold mechanism 6 can comprise the first junction plate 61, the second junction plate 62 and the second telescoping cylinder 63, one end of the first junction plate 61 is hinged on an arm joint in adjacent two arms joint, one end of the second junction plate 62 is hinged on another arm joint in adjacent two arms joint, and the other end of the other end of the first junction plate 61 and the second junction plate 62 is hinged, the arm joint that one end of the second telescoping cylinder 63 is hinged in adjacent two arms joint is upper, and the other end of the second telescoping cylinder 63 is hinged on the other end of the first junction plate 61.By this fold mechanism 6, can be found out, under the folding rounding state of arm joint, when the second telescoping cylinder 63 stretches out, will promote the other end of the first junction plate 61, and then promote the second junction plate 62, make between adjacent two jibs and open each other; On the contrary, when the second telescoping cylinder 63 is retracted, carry out inverse operation, make between adjacent two jibs and be folded each other.Although at this concrete structure of having described fold mechanism 6, the utility model is not limited to this concrete structure.
And, between end arm joint 4 and inferior end arm joint 3, also can adopt fold mechanism 6, but, for many factors such as cost consideration, between end arm joint 4 and inferior end arm joint 3, only need to adopt the first telescoping cylinder 5 just can meet the cloth demand.
Based on jib described above, the utility model can relate to a kind of engineering machinery that comprises above-mentioned jib, and the head end arm of jib joint 1 is hinged on engineering machinery.Generally, on engineering machinery, be provided with slew gear 7, head end arm joint 1 is hinged on this slew gear 7, to realize the revolution of 360 ° of jibs.About slew gear 7, be structure known in those skilled in the art, do not repeat them here.In addition, described engineering machinery can be preferably concrete mixer, but is not limited to concrete mixer.
Below describe by reference to the accompanying drawings preferred embodiment of the present utility model in detail; but; the utility model is not limited to the detail in above-mentioned embodiment; in technical conceive scope of the present utility model; can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection domain of the present utility model.
It should be noted that in addition, each concrete technical characterictic described in the above-mentioned specific embodiment, in reconcilable situation, can make up by any suitable mode, for fear of unnecessary repetition, the utility model is to the explanation no longer separately of various possible combinations.
In addition, between various embodiment of the present utility model, also can carry out any combination, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.
Claims (8)
1. jib, this jib is R type foldable arm rack and comprises hinged successively a plurality of arm joints, it is characterized in that, described jib is configured to the end arm joint (4) in described a plurality of arm joints under folding rounding state and is in or substantially is in same straight line with the inferior end arm joint (3) adjacent with this end arm joint (4).
2. jib according to claim 1, it is characterized in that, described end arm joint (4) can be inwardly folding with respect to described end arm joint (3) by the first telescoping cylinder (5), and the two ends of described the first telescoping cylinder (5) are hinged on respectively on described end arm joint (4) and described end arm joint (3).
3. jib according to claim 2, is characterized in that, can be relative to each other inwardly folding by fold mechanism (6) between other arbitrary neighborhood two joint arm joints of described jib.
4. jib according to claim 3, it is characterized in that, described fold mechanism (6) comprises the first junction plate (61), the second junction plate (62) and the second telescoping cylinder (63), one end of described the first junction plate (61) is hinged on an arm joint in adjacent two arms joint, one end of described the second junction plate (62) is hinged on another arm joint in adjacent two arms joint, and the other end of the other end of described the first junction plate (61) and described the second junction plate (62) is hinged, one end of described the second telescoping cylinder (63) is hinged on an arm joint in adjacent two arms joint, the other end of described the second telescoping cylinder (63) is hinged on the other end of described the first junction plate (61).
5. the described jib of any one according to claim 1 to 4, it is characterized in that, described jib comprises five hinged successively arm joints, and these five arm joints are respectively head end arm joint (1), two insert jib sections (2), inferior end arm joint (3) and end arm joint (4).
6. an engineering machinery, is characterized in that, this project machinery comprises the described jib of any one according to claim 1 to 5, and the described head end arm joint (1) of described jib is hinged on described engineering machinery.
7. engineering machinery according to claim 6, is characterized in that, on described engineering machinery, is provided with slew gear (7), and described head end arm joint (1) is hinged on this slew gear (7).
8. according to claim 6 or 7 described engineering machinery, is characterized in that, described engineering machinery is concrete mixer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202600913U CN203296390U (en) | 2013-05-14 | 2013-05-14 | Cantilever crane and engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202600913U CN203296390U (en) | 2013-05-14 | 2013-05-14 | Cantilever crane and engineering machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203296390U true CN203296390U (en) | 2013-11-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202600913U Expired - Fee Related CN203296390U (en) | 2013-05-14 | 2013-05-14 | Cantilever crane and engineering machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203296390U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115142678A (en) * | 2021-03-31 | 2022-10-04 | 三一汽车制造有限公司 | Arm support device and engineering machinery |
-
2013
- 2013-05-14 CN CN2013202600913U patent/CN203296390U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115142678A (en) * | 2021-03-31 | 2022-10-04 | 三一汽车制造有限公司 | Arm support device and engineering machinery |
| CN115142678B (en) * | 2021-03-31 | 2024-02-06 | 三一汽车制造有限公司 | Arm support device and engineering machinery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131120 Termination date: 20170514 |