CN103626054B - Cargo beam pull pin structure, crane arm and hoisting crane - Google Patents
Cargo beam pull pin structure, crane arm and hoisting crane Download PDFInfo
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- CN103626054B CN103626054B CN201310683960.8A CN201310683960A CN103626054B CN 103626054 B CN103626054 B CN 103626054B CN 201310683960 A CN201310683960 A CN 201310683960A CN 103626054 B CN103626054 B CN 103626054B
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Abstract
The invention discloses a kind of cargo beam pull pin structure, crane arm and hoisting crane.This cargo beam pull pin structure comprises body, the first bearing, the second bearing, the first fork, the second fork, the first driver train and the second driver train; First bearing and the second bearing are arranged at intervals at the top of body, the first end of the first fork and the first end of the second fork are articulated with the first bearing and the second bearing respectively by the first hinge and the second hinge, in the second end of the first fork and the vertical area of the second end of the second fork between the first hinge and the second hinge; First driver train and the second driver train are respectively used to driving first fork and the second fork; Distance between second end of the first fork and the second end of the second fork can be blocked the head of arm pin pull bar and provide pulling force for it when being less than the first preset value.Implement the present invention, effectively can reduce the probability occurring shock accident because the release of arm pin pull bar is not in place or occur loosening decline.
Description
Technical field
The present invention relates to crane single cylinder bolt technical field, particularly a kind of cargo beam pull pin structure, crane arm and hoisting crane.
Background technology
At present, the crane arm of hoisting crane often adopts single-cylinder bolt type telescopic boom, this telescopic boom only has a telescopic oil cylinder, and one end of this telescopic oil cylinder is fixedly installed in the arm tail of basic arm, the other end is movable end, movable end is provided with cylinder head, and the both sides of cylinder head are provided with two corresponding mounting holes, are provided with cylinder pin in each mounting hole.The center shaft of these two cylinder pins and the center shaft of telescopic oil cylinder coplanar, and these two cylinder pins can stretch out or retract under the effect of cylinder pin oil cylinder; Further, telescopic oil cylinder can optionally lock or discharge the relative position of itself and arbitrary joint telescopic boom when above-mentioned cylinder pin stretches out or regains.In addition, between adjacent each joint telescopic boom and be equipped with arm latch structure between basic arm and the first telescopic boom, in each arm latch structure, arm pin is arranged at the top outer of certain joint arm, arm key seat is arranged at the inside top of another adjacent joint arm, and the relative position between adjacent telescopic boom and between basic arm and first segment telescopic boom optionally inserts or extract arm key seat to realize locking or discharging by this arm pin.
First above-mentioned telescopic oil cylinder can lock with minor details telescopic boom, and minor details telescopic boom and joint telescopic boom second from the bottom are discharged by retraction arm pin, now minor details telescopic boom can be taken out of by telescopic oil cylinder simultaneously; Itself and joint telescopic boom second from the bottom relock after arriving desired location by minor details telescopic boom, regain described telescopic oil cylinder and itself and joint telescopic boom second from the bottom are locked, then joint telescopic boom second from the bottom and joint telescopic boom third from the bottom are discharged, now joint telescopic boom second from the bottom can be taken out of by telescopic oil cylinder, the like can realize stretching out successively of each joint telescopic boom.
In prior art, in order to the arm lock realized between adjacent expansion arm is fixed, general on interior telescopic boom hold-down arm pin and lock Bringing-back mechanism (as spring) accordingly, telescopic boom offers arm pin-and-hole outside, the arm pin like this on telescopic boom can stretch out until insert in the arm pin-and-hole on external extension arm outwardly under the effect of locking Bringing-back mechanism; In order to the arm pin realized between adjacent expansion arm unlocks, generally corresponding pulling-out mechanism is set on interior telescopic boom, as shown in Figure 1, arm pin one end is inwardly connected with arm pin pull bar 1', the size slightly large (larger than the shaft of arm pin pull bar 1') of arm pin pull bar 1' lower end head, the draw-in groove 21'(that the lower end head of arm pin pull bar 1' can insert the body 2' that pulls pin is generally dovetail furrow) in, the body 21' that pulls pin can move downward, band swing arm pin pull bar 1' moves downward, until extracted from the arm pin-and-hole of external extension arm by arm pin; In the concrete mode of one, the body 2' that pulls pin can be arranged on cylinder head 3' up or down, moving up and down of body 2' of pulling pin is controlled by corresponding oil cylinder, in the course of the work, it is mobile that the body 2' that pulls pin follows cylinder head 3' front and back (namely perpendicular to the direction of paper in Fig. 1) in telescopic boom, when arriving position corresponding to arm pin pull bar 1', the lower end head of arm pin pull bar 1' will be placed in the draw-in groove 21' that pulls pin on body 2'.
In such scheme, due to the frequent the locking and unlocking of arm pin, arm pin pull bar 1' is easily caused to discharge not in place or occur loosening and declining, when arm pin pull bar 1' discharges not in place, the lower end head of arm pin pull bar 1' and the upper turn of bilge 22' of draw-in groove 21' is easily caused to bump against, when arm pin pull bar 1' loosens decline, the lower end head etc. of arm pin pull bar 1' is easily caused to bump against with the bottom of draw-in groove 21'.
Therefore, how improving for above-mentioned deficiency and defect, more to adapt to use needs, is those skilled in the art's technical barriers urgently to be resolved hurrily.
Summary of the invention
In view of this, the first object of the present invention is to provide a kind of cargo beam pull pin structure, effectively to reduce the probability occurring shock accident because the release of arm pin pull bar is not in place or occur loosening decline.
Specifically, this cargo beam pull pin structure comprises body, the first bearing, the second bearing, the first fork, the second fork, the first driver train and the second driver train; Described first bearing and described second bearing are arranged at intervals at the top of described body, the first end of described first fork and the first end of described second fork are articulated with described first bearing and described second bearing respectively by the first hinge and the second hinge, in the second end of described first fork and the vertical area of the second end of described second fork between described first hinge and described second hinge; Described first driver train and described second driver train are respectively used to drive described first fork and described second fork; Distance between second end of described first fork and the second end of described second fork can be blocked the head of arm pin pull bar and provide pulling force for it when being less than the first preset value.
Further, the second end of the second end of described first fork and described second fork is raw is respectively arranged with the first pressing plate and the second pressing plate, contacts for compressing on the surface of contiguous shaft with arm pin rod head.
Further, described first pressing plate and described second pressing plate are strip and are arranged in parallel; The number of described first bearing, described first fork, described first driver train, described second bearing, described second fork and described second driver train is two; The two ends of described first pressing plate are connected to the second end of two described first forks, and the two ends of described second pressing plate are connected to the second end of two described second forks.
Further, described first bearing, described first fork and described first driver train and described second bearing, described second fork and described second driver train are arranged symmetrically.
Further, described first fork offers the first chute along its length, described second fork offers the second chute along its length; The first slide shaft and the second slide shaft is respectively arranged with in described first chute and in described second chute; Described first driver train and described second driver train be respectively used to drive described first slide shaft and described second slide shaft towards or move away from described body.
Further, described first driver train and described second driver train are respectively the first oil cylinder and the second oil cylinder, the first end of described first oil cylinder and the first end of described second oil cylinder are connected to described first fork and described second fork, and the second end is connected to described body.
Further, described first chute is the first elongated hole, and described second chute is the second elongated hole.
The second object of the present invention is to provide a kind of crane arm, is pulling out to reduce crane arm the probability broken down in arm pin process.
Specifically, this crane arm comprises multiple telescopic boom and is located at telescopic oil cylinder, cylinder head and the arm pin pull bar in telescopic boom, wherein, is also provided with the cargo beam pull pin structure described in above-mentioned any one in telescopic boom.
Further, described body is the installation body of described cylinder head.
The third object of the present invention is to provide a kind of hoisting crane, to improve transaction capabilities and the safety performance of hoisting crane.
When adopting cargo beam pull pin structure of the present invention, in the course of the work, when needs pull out the operation of arm pin, can make (lower end) head of arm pin pull bar in the space between the line and body of the second end of the first fork and the second end of the second fork, then by the first driver train and the second driver train, the second end of the first fork and the second end of the second fork are moved respectively towards the other side, make distance between the two more and more less, when this distance reaches the first preset value, the head of arm pin pull bar can clamp by the second end of the first fork and the second end of the second fork, when this distance continues to reduce, head for arm pin pull bar is provided (downwards) pulling force by the second end of the first fork and the second end of the second fork, and then arm pin is extracted from the arm pin-and-hole of external extension arm, when needs release arm pin pull bar, first driver train and the second driver train counteragent, distance between second end of the first fork and the second end of the second fork is increased gradually, until no longer clamp arm pin pull bar, such arm pin reinserts under the effect of self return mechanism in the arm pin-and-hole of external extension arm.
From the foregoing, compared with prior art, what cargo beam pull pin structure of the present invention can realize crab jaw type pulls out arm pin mode, when the release of arm pin pull bar is not in place, because the second end of the first fork and the second end of the second fork are in non-obvolvent gripping orientation in an initial condition, arm pin pull bar (head) not easily crashes with it, when arm pin pull bar is excessively transferred, due to the space comparatively large (eliminating the setting of body of pulling pin) between the line of the second end of the first fork and the second end of the second fork and body, thus, arm pin pull bar (head) also not easily crashes with miscellaneous part, thus improve crane arm at the reliability pulling out arm pin process.
Crane arm of the present invention is provided with above-mentioned cargo beam pull pin structure, and therefore, the probability that this crane arm breaks down in the process of pulling pin greatly reduces.
Hoisting crane of the present invention is provided with above-mentioned crane arm, and therefore, this hoisting crane has better transaction capabilities and safety performance.
Accompanying drawing explanation
The accompanying drawing forming a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of existing a kind of cargo beam pull pin mechanism;
The generalized section of a kind of cargo beam pull pin structure that Fig. 2 provides for the embodiment of the present invention;
A kind of preferred implementation that Fig. 3 is cargo beam pull pin structure shown in Fig. 2 overlook view.
Nomenclature:
1' arm pin pull bar
2' pulls pin body
3' cylinder head
11' lower end head
21' draw-in groove
The upper turn of bilge of 22'
1 arm pin pull bar
10 heads
101 surfaces
2 bodies
20 tops
11 first bearings
12 first forks
13 first chutes
14 first slide shafts
15 first pressing plates
16 first driver trains
21 second bearings
22 second forks
23 second chutes
24 second slide shafts
25 second pressing plates
26 second driver trains
Detailed description of the invention
To it should be pointed out that in this part to the description of concrete structure and description order it is only explanation to specific embodiment, should not be considered as there is any restriction to protection scope of the present invention.In addition, when not conflicting, the embodiment in this part and the feature in embodiment can combine mutually.
Please refer to Fig. 2 and Fig. 3, below in conjunction with accompanying drawing, the embodiment of the present invention is elaborated.Wherein, the structural representation of a kind of cargo beam pull pin structure that Fig. 2 provides for the embodiment of the present invention, for convenience of explanation and public understanding, also show arm pin pull bar, it should be noted that cargo beam pull pin structure of the present invention can not comprise arm pin pull bar in Fig. 2.
As shown in Figure 2, the hoisting crane of this embodiment structure of pulling pin comprises body 2, first bearing 11, second bearing 21, first fork 12, second fork 22, first driver train 16 and the second driver train 26.
Wherein, first bearing 11 and the second bearing 21 are arranged at intervals at the top 20 of body 2, the first end of the first fork 12 and the first end of the second fork 22 are articulated with in the first bearing 11 and the second end of the second bearing 21, first fork 12 and the vertical area of the second end of the second fork 22 between this first hinge and this second hinge respectively by the first hinge and the second hinge (shown in figure but do not mark).
First driver train 16 and the second driver train 26 interval are arranged in the top side of body 2, are respectively used to driving first fork 12 and rotate around the first hinge and drive the second fork 22 to rotate around the second hinge; Distance between second end and the second end of the second fork 22 of the first fork 12 can be blocked the head 10 of arm pin pull bar 1 and provide (downwards, being as the criterion with orientation in scheming) pulling force for it when being less than the first preset value.
Below in conjunction with the principle of work of the concrete scene illustratively cargo beam pull pin structure of above-described embodiment, in order to clearly, be described for the installation body of body 2 for cylinder head (being located at crane arm telescopic oil cylinder movable end):
In the course of the work, the movable end that body 2 follows telescopic oil cylinder moves around in each joint telescopic boom of crane arm, when needs pull out the operation of arm pin, body 2 is made to move to relevant position by telescopic oil cylinder, can make (lower end) head 10 of arm pin pull bar 1 in the space between the line and body 2 of the second end of the first fork 12 and the second end of the second fork 22, then by the first driver train 16 and the second driver train 26, second end of the second end of the first fork 12 and the second fork 22 is moved respectively towards the other side, make distance between the two more and more less, when this distance reaches the first preset value (depending on the size of arm pin pull bar 1), the head 10 of arm pin pull bar 1 can clamp by the second end of the first fork 12 and the second end of the second fork 22, when this distance continues to reduce, head 10 for arm pin pull bar 1 is provided (downwards) pulling force by the second end of the first fork 12 and the second end of the second fork 22, and then arm pin (being connected to arm pin pull bar 1) is extracted from the arm pin-and-hole of adjacent external extension arm, when needs release arm pin pull bar 1, first driver train 16 and the second driver train 26 counteragent, distance between second end of the second end of the first fork 12 and the second fork 22 is increased gradually, until no longer clamp arm pin pull bar 1, such arm pin will reinsert in the arm pin-and-hole of adjacent external extension arm under the effect of self return mechanism.
From the foregoing, compared with prior art, what the cargo beam pull pin structure of the embodiment of the present invention can realize crab jaw type pulls out arm pin mode, when arm pin pull bar 1 discharges not in place, due to the second end of the first fork 12 and the second fork 22 the second end in an initial condition (namely when cylinder head moves around in telescopic boom) be in non-obvolvent gripping orientation, the head 10 of arm pin pull bar 1() not easily crash with it, when arm pin pull bar 1 is excessively transferred, due to the space comparatively large (eliminating the setting of body of pulling pin) between the line of the second end of the first fork 12 and the second end of the second fork 22 and body 2, thus, the head of arm pin pull bar 1() also not easily crash with miscellaneous part, thus improve crane arm at the reliability pulling out arm pin process.
It should be noted that, shown in composition graphs 2, in specific implementation process, the cargo beam pull pin structure of above-described embodiment can also be made following one or more and optimize:
One, at the second end of the first fork 12 with the second end of the second fork 22 is estranged does not arrange the first pressing plate 15 and the second pressing plate 25, all contact for compressing on the surface 101 of contiguous shaft with arm pin pull bar 1 head 10, when distance like this between second end and the second end of the second fork 22 of the first fork 12 reaches the first preset value, first pressing plate 15 and the second pressing plate 25 will compress the both sides being contacted with surface 101 respectively, move downward so that promote head 10 further; Due to the first pressing plate 15 and the second pressing plate 25 can area of contact larger, second end of such first fork 12 and the second end of the second fork 22 act on the both sides on the surface 101 of head 10 respectively by the first pressing plate 15 and the second pressing plate 25, like this can the position accuracy demand of suitable lower arm pin pull bar 1 head 10.Alternatively, can also optimize further on this basis, such as, shown in composition graphs 3, the first pressing plate 15 and described second pressing plate 25 are strip and are arranged in parallel; The number of the first bearing 11, first fork 12, first driver train 16, second bearing 21, second fork 22 and the second driver train 26 is two; The two ends of the first pressing plate 15 are connected to the second end of two the first forks 12, and the two ends of the second pressing plate 25 are connected to the second end of two the second forks 22; Like this, in the course of the work, as long as the head of arm pin pull bar 1 falls in the space linking between body 2 top 20 between the first pressing plate 15 and the second pressing plate 25, clamping can be carried out and pull downwards.
Two, the first bearing 11, first fork 12 and the first driver train 16 and the second bearing 21, second fork 22 and the second driver train 26 are arranged symmetrically, be convenient to like this realize the head 10 of arm pin pull bar 1 is carried out to clamping and pulls downwards, and contribute to stress equalization.
Three, on the first fork 12, offer the first chute 13 along its length, the second fork 22 offers the second chute 23 along its length; The first slide shaft 14 and the second slide shaft 24 is respectively arranged with in first chute 13 with in the second chute 23; First driver train 16 and the second driver train 26 are respectively used to driving first slide shaft 14 and the second slide shaft 24 moves towards the top 20 of body 2, adjust the position of the first slide shaft 14 in the first chute 13 and the position of the second slide shaft 24 in the second chute 23 respectively by the first driver train 16 and the second driver train 26 like this, the clamping to arm pin pull bar 1 can be realized, pull and discharge.Alternatively, the first chute 13 can adopt the first elongated hole, and the second chute 23 can adopt the second elongated hole.
Four, the first driver train 16 and the second driver train 26 are respectively the first oil cylinder and the second oil cylinder, and the first end of this first oil cylinder and the first end of this second oil cylinder are connected to the first fork 12 and the second fork 22, second end is connected to body 2.If when aforementioned " three " scheme of employing, the first end of the first oil cylinder and the first end of the second oil cylinder are connected to the first slide shaft 14 and the second slide shaft 24, second end is connected to body 2, it is slide shaft moving around in chute that this scheme is convenient to the transform linear motion up and down of oil cylinder, so realize fork carry out back rotation.
It should be noted that, the mode realizing the first fork 12 and the rotation of the second fork 22 has varied, and therefore, the first driver train 16 and the second driver train 16 are not limited in employing oil cylinder, also other modes can be adopted, as long as function of the present invention can be realized.
Other embodiments of the invention additionally provide a kind of crane arm, this crane arm comprises multiple telescopic boom and is located at telescopic oil cylinder, cylinder head and the arm pin pull bar in telescopic boom, any one cargo beam pull pin structure above-mentioned is also provided with in telescopic boom, because above-mentioned cargo beam pull pin structure has above-mentioned technique effect, therefore, the probability that this crane arm breaks down in the process of pulling pin greatly reduces, the specific implementation process of its appropriate section is similar to the above embodiments, the specific implementation process of other parts see the associated description of prior art, hereby can not repeat.
Other embodiments of the invention additionally provide a kind of hoisting crane, as car hosit, this hoisting crane is provided with above-mentioned crane arm, because above-mentioned crane arm has above-mentioned technique effect, therefore, this hoisting crane has better transaction capabilities and safety performance, and the specific implementation process of its appropriate section is similar to the above embodiments, the specific implementation process of other parts see the associated description of prior art, hereby can not repeat.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a cargo beam pull pin structure, described cargo beam pull pin structure comprises body (2), the first bearing (11), the second bearing (21), the first fork (12), the second fork (22), the first driver train (16) and the second driver train (26); Described first bearing (11) and described second bearing (21) are arranged at intervals at the top (20) of described body (2), and described first driver train (16) and described second driver train (26) are respectively used to drive described first fork (12) and described second fork (22); It is characterized in that:
The first end of described first fork (12) and the first end of described second fork (22) are articulated with described first bearing (11) and described second bearing (21) respectively by the first hinge and the second hinge, in the second end of described first fork (12) and the vertical area of the second end of described second fork (22) between described first hinge and described second hinge;
Distance between second end of described first fork (12) and the second end of described second fork (22) can be blocked the head (10) of arm pin pull bar (1) and provide pulling force for it when being less than the first preset value.
2. cargo beam pull pin structure as claimed in claim 1, it is characterized in that: the second end of described first fork (12) and the second end of described second fork (22) are respectively arranged with the first pressing plate (15) and the second pressing plate (25), contacting for compressing on the surface (101) of contiguous shaft with arm pin pull bar (1) head (10).
3. cargo beam pull pin structure as claimed in claim 2, is characterized in that: described first pressing plate (15) and described second pressing plate (25) are strip and are arranged in parallel; The number of described first bearing (11), described first fork (12), described first driver train (16), described second bearing (21), described second fork (22) and described second driver train (26) is two; The two ends of described first pressing plate (15) are connected to the second end of two described first forks (12), and the two ends of described second pressing plate (25) are connected to the second end of two described second forks (22).
4. cargo beam pull pin structure as claimed in claim 2, is characterized in that: described first bearing (11), described first fork (12) and described first driver train (16) are arranged symmetrically with described second bearing (21), described second fork (22) and described second driver train (26).
5. the cargo beam pull pin structure as described in any one of Claims 1-4, it is characterized in that: described first fork (12) offers the first chute (13) along its length, described second fork (22) offers the second chute (23) along its length; The first slide shaft (14) and the second slide shaft (24) is respectively arranged with in described first chute (13) and in described second chute (23); Described first driver train (16) and described second driver train (26) be respectively used to drive described first slide shaft (14) and described second slide shaft (24) towards or away from described body (2) movement.
6. the cargo beam pull pin structure as described in any one of Claims 1-4, it is characterized in that: described first driver train (16) and described second driver train (26) are respectively the first oil cylinder and the second oil cylinder, the first end of described first oil cylinder and the first end of described second oil cylinder are connected to described first fork (12) and described second fork (22), and the second end is connected to described body (2).
7. cargo beam pull pin structure as claimed in claim 5, it is characterized in that: described first chute (13) is the first elongated hole, described second chute (23) is the second elongated hole.
8. a crane arm, comprises multiple telescopic boom and is located at telescopic oil cylinder, cylinder head and the arm pin pull bar (1) in telescopic boom, it is characterized in that: be also provided with the cargo beam pull pin structure described in any one of claim 1 to 7 in telescopic boom.
9. crane arm as claimed in claim 8, is characterized in that: the installation body that described body (2) is described cylinder head.
10. a hoisting crane, is characterized in that: described hoisting crane is provided with the crane arm described in claim 8 or 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310683960.8A CN103626054B (en) | 2013-12-13 | 2013-12-13 | Cargo beam pull pin structure, crane arm and hoisting crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310683960.8A CN103626054B (en) | 2013-12-13 | 2013-12-13 | Cargo beam pull pin structure, crane arm and hoisting crane |
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| Publication Number | Publication Date |
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| CN103626054A CN103626054A (en) | 2014-03-12 |
| CN103626054B true CN103626054B (en) | 2015-10-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310683960.8A Active CN103626054B (en) | 2013-12-13 | 2013-12-13 | Cargo beam pull pin structure, crane arm and hoisting crane |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109093575A (en) * | 2018-08-29 | 2018-12-28 | 上海新奥林汽车传感器有限公司 | A kind of workbench for air quality sensor production |
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| CN103626054A (en) | 2014-03-12 |
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