CN202481965U - Retractable lifting arm and self-propelled crane with the same - Google Patents
Retractable lifting arm and self-propelled crane with the same Download PDFInfo
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- CN202481965U CN202481965U CN2011205439854U CN201120543985U CN202481965U CN 202481965 U CN202481965 U CN 202481965U CN 2011205439854 U CN2011205439854 U CN 2011205439854U CN 201120543985 U CN201120543985 U CN 201120543985U CN 202481965 U CN202481965 U CN 202481965U
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- arm
- arm head
- guide roller
- roller frame
- risers
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Abstract
The utility model discloses a retractable lifting arm comprising an lifting arm body and an arm head pulley device, wherein a plurality of arm sections are sleeved in sequence to form the lifting arm body, and the arm head pulley device is hinged with the arm head of an end arm section. The arm head pulley device is arranged to switch working condition and non-working condition of the end arm head of the arm section by rotating around the end arm head of the arm section. The arm head pulley device comprises a pulley frame hinged with the arm head of the end arm section, and an arm head pulley arranged on the pulley frame. A hinged axis between the pulley frame and the arm head of the end arm section is in parallel with the axis of the arm head pulley. Width of the retractable lifting arm meets requirements of highway travel on the non-working condition as the structure of the arm head pulley device is optimized. The utility model further provides a self-propelled crane with the retractable lifting arm.
Description
Technical field
The utility model relates to technical field of engineering machinery, is specifically related to a kind of telescopic hoist boom and has the self-propelled crane of this telescopic hoist boom.
Background technology
At present, on-the-spot at all kinds of construction operations, self-propelled crane is able to widespread use with the transition performance of its maneuverability.For example, car hosit, full ground hoisting crane, rough terrain wheeled crane, crawler crane etc.
In the prior art, the Lifting device of self-propelled crane adopts telescopic structure mostly, and agent structure is nested to form by the single oil cylinder joint successively.During actual lifting operation, can be according to the needs of the different operating usable length of arm of stretching, contract with the adjustment arm.When the weight of lifted weight was heavier, hoisting rope was connected with suspension hook via the assembly pulley of minor details arm arm head, with effective carrying; And when the weight of lifted weight was light, hoisting rope then behind the arm head sheave 10 of the leading sheave through minor details arm arm head and crane arm front end, directly was connected with little tonnage suspension hook.
See also Fig. 1, Fig. 2 and Fig. 3, wherein, Fig. 1 the figure shows arm head sheave 10 mode of operations for the integral structure scheme drawing of existing hoisting crane, and Fig. 2 and Fig. 3 are respectively shown in Fig. 1 the master of telescopic boom end, lateral plan under the mode of operation.
Generally, when car hosit went with full ground hoisting crane normal highway, the arm head of crane arm is placed on the line of centers of car load Width all towards the place ahead, and was specifically as shown in Figure 3.Because arm head sheave device 1 at car load foremost, will make car load length strengthen, and then increased the turn radius of car load; Therefore; During road running under the off working state, arm head sheave device 1 can side-foldable, to reduce car load length and turn radius; Specifically please in the lump referring to Fig. 4 and Fig. 5, Fig. 4 and Fig. 5 are respectively shown in Fig. 1 the master of telescopic boom end, lateral plan under the off working state.
Yet for the hoisting crane of super-tonnage, the minor details arm arm head width of broad is bigger, adds the arm head sheave device of side-foldable, and the width of its car load will exceed the current restriction of traffic law.Obviously, receive the restriction of himself structure, the arm head sheave of this folding mode can't be applicable to the large-tonnage hoisting crane.
In view of this, demand urgently being optimized design, effectively to overcome the restriction that above-mentioned defective adapts to current width to existing arm head pulley gear.
The utility model content
To above-mentioned defective, the technical matters that the utility model solves is, a kind of telescopic hoist boom simple and reliable for structure is provided, and the structure optimization through the arm head pulley gear makes the telescopic hoist boom width under the off working state satisfy the requirement of road running.On this basis, the utility model also provides a kind of self-propelled crane with this telescopic hoist boom.
The telescopic hoist boom that the utility model provides; Comprise by the nested successively arm main body that constitutes of single oil cylinder joint; And with minor details arm arm head pivotally attached arm head pulley gear, and said arm head pulley gear is configured to rotate around said minor details arm arm head and switches its mode of operation and off working state; Said arm head pulley gear comprises with said minor details arm arm head pivotally attached guide roller frame and is arranged on the arm head pulley on the said guide roller frame; The hinged axial line between said guide roller frame and the minor details arm arm head and the axis parallel of said arm head pulley.
Preferably, said guide roller frame has two risers that laterally arrange, and said arm head pulley is built between the side end of two said risers, and its sheave shaft is plugged on two said risers; Hinged otic placode outside the end side of two said risers and the said minor details arm arm head is hinged.
Preferably, has the first spacing pair between said guide roller frame and the said minor details arm arm head, with the said guide roller frame under the restraint of labour state.
Preferably, the said first spacing pair is specially the positive stop that is arranged on the said riser and is arranged on the hinged otic placode on the said minor details arm arm head, and the said positive stop under the mode of operation offsets with the front side outer rim of said hinged otic placode and cooperates.
Preferably, has the second spacing pair between said guide roller frame and the said minor details arm arm head, with the said guide roller frame under the restriction off working state.
Preferably; The said second spacing pair be specially spacing bearing pin and with the said hinged otic placode that is opened in and two said risers on spacing bearing pin mounting hole; Spacing bearing pin mounting hole on said hinged otic placode under the off working state and the two said risers is coaxial, and said spacing bearing pin is plugged in the said locating dowel pin axis hole.
Preferably, offer spacing bearing pin putting hole on the said hinged otic placode.
Preferably, two said risers outside the said arm head pulley are provided with retaining rope parts.
Preferably, said retaining rope parts are specially the retaining reel for rope that the axis parallel with said arm head pulley is provided with, and the two ends of said retaining reel for rope are inserted on two said risers.
The self-propelled crane that the utility model provides, comprise the chassis, can be with respect to the rotating turntable of getting on the bus in said chassis, and be arranged on the said anterior telescopic hoist boom of turntable of getting on the bus, said telescopic hoist boom is specially foregoing telescopic hoist boom.
Compared with prior art; The telescopic hoist boom that the utility model provides improves to the annexation between arm head pulley gear and the minor details arm arm head; The hinged axial line between this guide roller frame and the minor details arm arm head and the axis parallel of arm head pulley; Guide roller frame rotates the switching that realizes its mode of operation through it with respect to telescopic boom in perpendicular, promptly the arm head pulley gear through about folding movement switch in working order and between the off working state.Under the mode of operation, the arm head pulley that is provided with on the guide roller frame is used to support the lift heavy steel rope; Under the off working state, guide roller frame is upwards rotated with respect to the hinge between itself and the minor details arm arm head, thereby reduce arm head pulley blocking pilot's line of vision when the road running state; Simultaneously,, therefore can effectively control the complete machine width, and then reliable guarantee is provided for hoister in large tonnage adapts to road running because the arm head pulley gear under the off working state does not take width dimensions.
In the preferred version of the utility model, has the first spacing pair of the guide roller frame of restraint of labour state between guide roller frame and the minor details arm arm head; Particularly; Realize through positive stop on the riser that is arranged on guide roller frame and the hinged otic placode that is arranged on the minor details arm arm head; In working order down; This limit stop offsets with the front side outer rim of hinged otic placode and cooperates, and obviously, this cooperation place that offsets should be positioned at the below of guide roller frame and minor details arm arm head hinge-point; So be provided with; Because the application force that acts under the mode of operation on the arm head pulley makes guide roller frame produce torque; And the first spacing pair of this programme has effectively limited guide roller frame issuable rotation under the effect of this torque, has improved the working stability under the mode of operation greatly.
In another preferred version of the utility model, has the second spacing pair between guide roller frame and the said minor details arm arm head; Particularly; Realize spacing to the arm head pulley gear under the off working state through spacing bearing pin and with the spacing bearing pin mounting hole on the hinged otic placode that is opened in and two risers; In the time of road running need being carried out, can guide roller frame upwards be turned to off working state in perpendicular, under this state; Spacing bearing pin mounting hole on hinged otic placode and two risers is coaxial; Spacing bearing pin is plugged in this locating dowel pin axis hole can realizes the spacing of arm head pulley gear under the off working state, have simple in structure, reliable characteristics, further improved the complete machine working stability.
The telescopic hoist boom that the utility model provides is applicable to any type of self-propelled crane.
Description of drawings
Fig. 1 is the integral structure scheme drawing of existing wheel crane;
Fig. 2 and Fig. 3 are respectively shown in Fig. 1 the master of telescopic boom end, lateral plan under the mode of operation;
Fig. 4 and Fig. 5 are respectively shown in Fig. 1 the master of telescopic boom end, lateral plan under the off working state;
Fig. 6 and Fig. 7 are respectively shown in the specific embodiment master of telescopic boom end, lateral plan under the mode of operation;
Fig. 8 is the front view of telescopic boom end under the off working state shown in the specific embodiment;
Fig. 9 and Figure 10 are respectively master, the lateral plan of the pulley gear of arm head described in the specific embodiment.
Among Fig. 6-Figure 10:
Arm head pulley gear 10, guide roller frame 11, riser 111, brace panel 112, positive stop 113, arm head pulley 12, spacing bearing pin 13, sheave shaft 121, spacing bearing pin mounting hole 14, retaining rope parts 15, minor details arm 20, hinged otic placode 21, spacing bearing pin putting hole 22.
The specific embodiment
The core of the utility model provides a kind of telescopic hoist boom; Improvement design through annexation between its arm head pulley gear and the minor details arm arm head; So that the arm head pulley gear under the road running state satisfies the driver vision requirement on the one hand, satisfy the related request of road running standard on the other hand for the complete machine width.Specify this embodiment below in conjunction with Figure of description.
Be without loss of generality, this embodiment is that main body is elaborated with the wheel crane.
Identical with prior art, wheel crane described in this embodiment comprises wheel undercarriage, can make the turntable of getting on the bus of gyroscopic movement with respect to this chassis, and its monnolithic case signal can be referring to Fig. 2.Equally, this turntable of getting on the bus is provided with each functional component, for example, is articulated in the anterior telescopic hoist boom of turntable of getting on the bus, and is arranged on the master winch on the turntable of getting on the bus, secondary elevator etc.Need to prove that those skilled in the art can realize the above-mentioned functions parts based on prior art, so this paper repeats no more.For specifying the core design about telescopic hoist boom that the utility model proposed, please specifically referring to Fig. 6 and Fig. 7, two figure are respectively end master, the lateral plan of the said telescopic boom of this embodiment, and the pulley gear of arm head shown in the figure is positioned at mode of operation.
The said telescopic hoist boom of this programme comprises by the nested successively arm main body that constitutes of single oil cylinder joint; Can under the effect of arm oil cylinder, drive arm joint according to the needs of concrete applying working condition stretches out or regains; To regulate the usable length of arm; Equally, the concrete annexation between arm oil cylinder and each the joint arm joint no longer elaborates.
As shown in Figure 6, the arm head pulley gear 10 hinged arm heads that are arranged on minor details arm 20.This arm head pulley gear 10 comprise with minor details arm 20 arm head pivotally attached guide roller frames 11 be arranged on the arm head pulley 12 on the guide roller frame 11, and be configured to and can rotate, so that between its mode of operation and off working state, switch around minor details arm 20 arm heads.Concrete combination is shown in Figure 7, and the guide roller frame 11 in this programme is parallel with the axial line L2 of arm head pulley 12 with the hinged axial line L1 between minor details arm 20 arm heads; That is to say that guide roller frame 11 can rotate the switching that realizes its mode of operation with respect to telescopic boom in perpendicular.Under the mode of operation, the arm head pulley 12 that is provided with on the guide roller frame 11 is used to support lift heavy steel rope (not shown); Under the off working state, guide roller frame 11 is upwards rotated with respect to the hinge between itself and minor details arm 20 arm heads, thereby reduce arm head pulley 12 blocking pilot's line of vision when the road running state.Specifically please in the lump referring to Fig. 8, this figure is the front view of telescopic boom end under the off working state.Obviously, the arm head pulley gear 10 under the off working state does not take width dimensions, can effectively control the complete machine width simultaneously.
For the guide roller frame 11 that connects arm head pulley 12; Its concrete structure can be provided with according to actual needs; Promptly; On the basis of the hinged relationship between the assembling of satisfying arm head pulley 12 and arm head pulley gear 10 and the minor details arm 20, need consider factors such as loading strength needs and deadweight restriction simultaneously.In this programme, the guide roller frame 11 whole framed structures that adopt, like Fig. 9 and shown in Figure 10, two figure are master, the lateral plan of arm head pulley gear 10.It has two risers that laterally arrange 111, and arm head pulley 12 is built between the side end of two risers 111, and its sheave shaft 121 is plugged on two risers 111, satisfies the rotation needs of arm head pulley 12; Simultaneously, the hinged otic placode 21 outside the end side of two risers and minor details arm 20 arm heads is hinged.
Certainly, in order to improve the bulk strength of framed structure, it is fixing between two risers 111, can to adopt brace panel 112 to connect.Should be appreciated that the quantity of brace panel 112 and the position specifically is set and to adjust according to actual needs, be not limited to the state shown in the figure.In addition, also can adopt two risers 11 of non-parallel setting as required.
As everyone knows, the deadweight of arm head pulley gear 10 is bigger, in working order with off working state under all need possess good spacing, to avoid taking place unconventional swing.Particularly the arm head pulley gear 10 of hoister in large tonnage configuration more need further improve the reliably spacing of arm head pulley gear 10.
As shown in the figure, have the first spacing pair between guide roller frame 11 and minor details arm 20 arm heads, with the guide roller frame under the restraint of labour state 11.Particularly; The first spacing pair is specially the positive stop 113 that is arranged on the riser 111 and is arranged on the hinged otic placode 21 on minor details arm 20 arm heads; Positive stop 113 under the mode of operation offsets with the front side outer rim of hinged otic placode 21 and cooperates; Obviously, this cooperation place that offsets should be positioned at the below of guide roller frame 11 and minor details arm 20 arm head hinge-points.Like this, the application force that acts under the mode of operation on the arm head pulley 12 makes guide roller frame 11 produce torque, and the first spacing pair has effectively limited guide roller frame 11 issuable rotation under the effect of this torque, has improved the working stability under the mode of operation greatly.
Further, also has the second spacing pair between guide roller frame 11 and minor details arm 20 arm heads, with the guide roller frame 11 under the restriction off working state.Particularly; The second spacing pair be specially spacing bearing pin 13 and with the hinged otic placode 21 that is opened in and two risers 111 on spacing bearing pin mounting hole 14; Spacing bearing pin mounting hole on hinged otic placode 21 under the off working state and two risers 111 is coaxial, and spacing bearing pin 13 is plugged in this locating dowel pin axis hole 14.When needs carry out road running; Can guide roller frame 11 upwards be turned to off working state in perpendicular; Under this state, the spacing bearing pin mounting hole on hinged otic placode 21 and two risers 111 is coaxial, spacing bearing pin 13 is plugged in this locating dowel pin axis hole can realizes the spacing of arm head pulley gear under the off working state; Simple in structure, reliable, can further improve the complete machine working stability.Particularly, spacing bearing pin 13 can adopt the bearing design, and the riser 111 from a side during assembling inserts spacing; In addition, this spacing bearing pin 13 also can be set to two minor axises, and is spacing from the insertion of the both sides of two risers 111 respectively, all can as long as satisfy the off working state of restriction arm head pulley gear.
Obviously, need spacing bearing pin 13 be extracted in spacing bearing pin mounting hole 14 under the mode of operation, could guide roller frame 11 be rotated.In the working process, idle spacing bearing pin 13 is very easily lost, and is not easy to the management of camp site.For overcoming the generation of this phenomenon, can on hinged otic placode 21, offer spacing bearing pin putting hole 22.Like this, can the spacing bearing pin 13 that disassemble temporarily be inserted in the spacing bearing pin putting hole 22, when treating road running its taking-up be got final product.
In addition, in the practice of construction process, the words that the swing of lift heavy load is bigger possibly make steel rope from the grooving of arm head pulley 12, jump out, and influence job stabilization even cause the damaged problem of steel rope to occur.Based on this, two risers 111 that can arm head pulley 12 outsides are provided with retaining rope parts 15.As shown in the figure, this retaining rope parts 15 are specially the retaining reel for rope that the axis parallel with arm head pulley 12 is provided with, and the two ends of this retaining reel for rope are inserted on two risers 111.
The above only is the preferred implementation of the utility model; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; Can also make some improvement and retouching, these improvement and retouching also should be regarded as the protection domain of the utility model.
Claims (10)
1. telescopic hoist boom comprises by the nested successively arm main body that constitutes of single oil cylinder joint, and with minor details arm arm head pivotally attached arm head pulley gear, and said arm head pulley gear is configured to rotate around said minor details arm arm head and switches its mode of operation and off working state; It is characterized in that said arm head pulley gear comprises with said minor details arm arm head pivotally attached guide roller frame and is arranged on the arm head pulley on the said guide roller frame; The hinged axial line between said guide roller frame and the minor details arm arm head and the axis parallel of said arm head pulley.
2. telescopic hoist boom according to claim 1 is characterized in that, said guide roller frame has two risers that laterally arrange, and said arm head pulley is built between the side end of two said risers, and its sheave shaft is plugged on two said risers; Hinged otic placode outside the end side of two said risers and the said minor details arm arm head is hinged.
3. telescopic hoist boom according to claim 2 is characterized in that, has the first spacing pair between said guide roller frame and the said minor details arm arm head, with the said guide roller frame under the restraint of labour state.
4. telescopic hoist boom according to claim 3; It is characterized in that; The said first spacing pair is specially the positive stop that is arranged on the said riser and is arranged on the hinged otic placode on the said minor details arm arm head, and the said positive stop under the mode of operation offsets with the front side outer rim of said hinged otic placode and cooperates.
5. according to claim 3 or 4 described telescopic hoist booms, it is characterized in that having the second spacing pair between said guide roller frame and the said minor details arm arm head, with the said guide roller frame under the restriction off working state.
6. telescopic hoist boom according to claim 5; It is characterized in that; The said second spacing pair be specially spacing bearing pin and with the said hinged otic placode that is opened in and two said risers on spacing bearing pin mounting hole; Spacing bearing pin mounting hole on said hinged otic placode under the off working state and the two said risers is coaxial, and said spacing bearing pin is plugged in the said locating dowel pin axis hole.
7. according to the said telescopic hoist boom of claim 6, it is characterized in that, offer spacing bearing pin putting hole on the said hinged otic placode.
8. telescopic hoist boom according to claim 1 is characterized in that, two said risers in the said arm head pulley outside are provided with retaining rope parts.
9. telescopic hoist boom according to claim 8 is characterized in that, said retaining rope parts are specially the retaining reel for rope that the axis parallel with said arm head pulley is provided with, and the two ends of said retaining reel for rope are inserted on two said risers.
10. self-propelled crane; Comprise the chassis, can be with respect to the rotating turntable of getting on the bus in said chassis; And be arranged on the said anterior telescopic hoist boom of turntable of getting on the bus, it is characterized in that said telescopic hoist boom is specially like each described telescopic hoist boom in the claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205439854U CN202481965U (en) | 2011-12-22 | 2011-12-22 | Retractable lifting arm and self-propelled crane with the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205439854U CN202481965U (en) | 2011-12-22 | 2011-12-22 | Retractable lifting arm and self-propelled crane with the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202481965U true CN202481965U (en) | 2012-10-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205439854U Expired - Fee Related CN202481965U (en) | 2011-12-22 | 2011-12-22 | Retractable lifting arm and self-propelled crane with the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202481965U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104563895A (en) * | 2014-12-29 | 2015-04-29 | 北京市三一重机有限公司 | Rotary drilling rig and power head carriage thereof |
-
2011
- 2011-12-22 CN CN2011205439854U patent/CN202481965U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104563895A (en) * | 2014-12-29 | 2015-04-29 | 北京市三一重机有限公司 | Rotary drilling rig and power head carriage thereof |
| CN104563895B (en) * | 2014-12-29 | 2017-09-22 | 北京市三一重机有限公司 | Rotary drilling rig and its power head carriage |
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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 |
Granted publication date: 20121010 Termination date: 20191222 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |