CN113277429A - High-load telescopic crane boom - Google Patents
High-load telescopic crane boom Download PDFInfo
- Publication number
- CN113277429A CN113277429A CN202110651074.1A CN202110651074A CN113277429A CN 113277429 A CN113277429 A CN 113277429A CN 202110651074 A CN202110651074 A CN 202110651074A CN 113277429 A CN113277429 A CN 113277429A
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- China
- Prior art keywords
- arm
- bracing piece
- frame
- fixed
- rod
- Prior art date
- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/64—Jibs
- B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
- B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/88—Safety gear
Abstract
The utility model belongs to the technical field of hoisting machinery and specifically relates to a telescopic jib loading boom of high load is related to, it includes the fixed arm, the digging arm and the frame that is used for installing the fixed arm, the fixed arm is square pipe, the digging arm is pegged graft in the fixed arm, be equipped with the supporting mechanism who is used for supporting the digging arm in the frame, the supporting mechanism includes bracing piece and the spacing subassembly that is used for the fixed stay pole, the one end of bracing piece articulates on the digging arm, the kidney slot has been seted up on the bracing piece, the length direction setting of kidney slot along the bracing piece, be connected with the dead lever that passes the kidney slot in the frame, the dead lever is located the below of fixed arm, during the digging arm shrink, the bracing piece can take place relative slip and relative rotation with the dead lever. The present application has the effect of reducing the possibility of deformation of the movable arm.
Description
Technical Field
The application relates to the field of hoisting machinery, in particular to a high-load telescopic boom.
Background
The crane boom is commonly called as a suspension arm and an arm support, is the most important device on a crane, can support the hoisting weight of a container, and enables a loading bridge to have the hoisting height and width. High-load telescopic booms are generally used for transporting construction materials such as steel bars, concrete, and steel materials.
Chinese patent with publication number CN212609190U proposes a telescopic tower crane boom, which comprises a boom body, wherein the boom body comprises a fixed arm and a movable arm, the movable arm is inserted into the fixed arm, one end of the movable arm extends out of the fixed arm, a lifting hook is arranged on the lower surface of the end of the movable arm, which is located out of the fixed arm, a sliding component and a telescopic driving component are arranged between the movable arm and the fixed arm, and a positioning component is arranged on the fixed arm. The sliding assembly enables the movable arm to slide in the fixed arm, the telescopic driving assembly can drive the movable arm to move, and the positioning assembly can lock and fix the movable arm.
With respect to the related art in the above, the inventors consider that: when the load is high and the movable arm extends out for a long time, the resistance arm of the movable arm becomes large, so that the possibility of deformation of the movable arm is increased.
Disclosure of Invention
In order to reduce the possibility of deformation of the movable arm, the application provides a high-load telescopic boom.
The application provides a telescopic jib loading boom of high load adopts following technical scheme:
the utility model provides a telescopic jib loading boom of high load, includes fixed arm, digging arm and the frame that is used for installing the fixed arm, and the fixed arm is square pipe, and the digging arm is pegged graft in the fixed arm, be equipped with the supporting mechanism who is used for supporting the digging arm in the frame, the supporting mechanism includes the bracing piece and is used for the spacing subassembly of fixed stay pole, and the one end of bracing piece articulates on the digging arm, has seted up the kidney slot on the bracing piece, and the kidney slot sets up along the length direction of bracing piece, is connected with the dead lever that passes the kidney slot in the frame, and the dead lever is located the below of fixed arm, and when the digging arm contracts, the bracing piece can take place relative slip and relative rotation with the dead lever.
Through adopting above-mentioned technical scheme, after the lifting hook hoisted the heavy object, the digging arm stretches out the fixed arm, along with stretching out of the digging arm, the bracing piece revoluted the rotation pole and rotated, and the dead lever slides to the direction of self slope simultaneously. When the digging arm stopped, the digging arm had the trend of buckling downwards under the effect of heavy object, and the digging arm applyed decurrent effort to the bracing piece, and spacing subassembly can carry on spacingly to the bracing piece this moment, prevents that the gag lever post from rotating, and under the combined action of digging arm and spacing subassembly, the bracing piece keeps static, and the bracing piece will applys ascending reaction force to the digging arm to the possibility that the digging arm warp has been reduced.
Optionally, the limiting assembly comprises a telescopic rod and a spring, the telescopic rod and the spring stretch along the length direction of the rack, the telescopic rod comprises an upper rod and a lower rod which are mutually inserted, the upper rod is fixed on the rack and located above the fixed rod, the axial direction of the spring is the same as the axial direction of the telescopic rod, one end of the spring is fixedly connected with the rack, the other end of the spring is fixedly connected with the lower rod, and the end part of the lower rod is abutted to the supporting rod.
Through adopting above-mentioned technical scheme, along with the digging arm stretches out the fixed arm, the tip rebound that the digging arm was kept away from to the bracing piece makes the lower beam upwards slide, and the lower beam compression spring, the vertical decurrent power is applyed to the lower beam to the spring of compressed, prevents that the bracing piece from rotating, makes the bracing piece apply ascending reaction force to the digging arm, realizes spacing to the bracing piece.
Optionally, a limiting groove is formed in one side, abutted against the telescopic rod, of the supporting rod, a rolling bead is connected with one end, abutted against the bottom wall of the limiting groove, of the telescopic rod, and when the movable arm stretches out and draws back, the rolling bead is in rolling contact with the bottom wall of the limiting groove.
Through adopting above-mentioned technical scheme, when the digging arm is flexible, take place relative slip between telescopic link and the bracing piece, the setting up of roll pearl can reduce the frictional force between telescopic link and the bracing piece, reduces the telescopic link possibility by wearing and tearing, and the roll pearl is located the spacing inslot, can reduce the possibility of telescopic link and bracing piece dislocation.
Optionally, be equipped with the guide assembly in the frame, the guide assembly includes guide way and guide block, and the guide way is seted up in the frame, and the length direction of guide way is syntropy with the length direction of telescopic link, and the one side of lower beam towards the frame is fixed with the guide block, and the guide block is located the guide way and with guide way sliding fit.
Through adopting above-mentioned technical scheme, guide way and guide block sliding fit have reduced the possibility of telescopic link skew.
Optionally, the guide groove is a dovetail groove.
By adopting the technical scheme, the possibility that the guide block is separated from the guide groove is reduced due to the arrangement of the dovetail groove.
Optionally, the fixed rod is provided with a rotating sleeve in a rotating sleeve, the rotating sleeve penetrates through the kidney-shaped groove, and one end of the fixed rod, which extends out of the rotating sleeve, is connected with the blocking block in a threaded manner.
By adopting the technical scheme, when the supporting rod slides, the rotating sleeve rotates around the fixed rod, so that the sliding friction between the supporting rod and the fixed rod is changed into rolling friction, and the friction force between the supporting rod and the fixed rod is reduced.
Optionally, the fixing rod is sleeved with an elastic layer, and the elastic layer is located between the rotating sleeve and the fixing rod.
Through adopting above-mentioned technical scheme, when the digging arm is flexible, pressure is great between bracing piece and the dead lever, and the setting of elastic layer has reduced the possibility that the dead lever is worn and torn.
Optionally, two groups of the supporting mechanisms are arranged along the width direction of the movable arm.
By adopting the technical scheme, the arrangement of the two groups of supporting mechanisms increases the supporting force of the supporting mechanisms on the movable arm, and further reduces the possibility of deformation of the movable arm.
In summary, the present application includes at least one of the following beneficial technical effects:
1. when a heavy object is lifted by the crane boom and the movable arm extends out, the position of the fixed rod is used as a fulcrum, the telescopic rod applies a downward acting force to the supporting rod under the action of elastic potential energy of the spring, and the end, hinged with the movable arm, of the supporting rod applies an upward acting force to the movable arm, so that the possibility of bending and deformation of the movable arm is reduced;
2. the guide groove is arranged on the rack, and the guide block is arranged on the telescopic rod, so that the guide groove is in sliding fit with the guide block, and the possibility of the telescopic rod in deviation is reduced;
3. the arrangement of the two groups of supporting mechanisms increases the supporting force of the supporting mechanisms on the movable arm, and further reduces the possibility of deformation of the movable arm.
Drawings
Fig. 1 is a schematic view of the overall structure of a high-load telescopic boom in the embodiment of the present application.
Fig. 2 is a schematic structural view for embodying the guide groove in the embodiment of the present application.
Fig. 3 is an enlarged view of a portion a in fig. 2.
Figure 4 is a cross-sectional view of a stop assembly in an embodiment of the present application.
Description of reference numerals: 1. a fixed arm; 2. a movable arm; 3. a frame; 4. a hook; 5. a support mechanism; 6. a support bar; 7. a limiting component; 8. a kidney-shaped groove; 9. fixing the rod; 10. rotating the sleeve; 11. an elastic layer; 12. a telescopic rod; 13. a spring; 14. a rod is arranged; 15. a lower rod; 16. a fixed block; 17. a first slot; 18. a second slot; 19. a limiting groove; 20. a strut; 21. rolling the beads; 22. a guide groove; 23. a guide block; 24. a stop block.
Detailed Description
The present application is described in further detail below with reference to figures 1-4.
The embodiment of the application discloses telescopic jib loading boom of high load, refers to fig. 1, including fixed arm 1, digging arm 2 and frame 3, fixed arm 1 and 2 horizontal settings of digging arm, the vertical setting of frame 3. The fixed arm 1 is a square tube and is fixedly connected above the frame 3, and the movable arm 2 is inserted in the fixed arm 1 and is in sliding fit with the fixed arm 1. One end of the movable arm 2 extends out of the fixed arm 1 and is connected with a lifting hook 4, and the lifting hook 4 is positioned on the lower surface of the movable arm 2. The frame 3 is provided with a support mechanism 5 for supporting the movable arm 2 upward.
Referring to fig. 1, when the crane boom works, the movable arm 2 extends out of the fixed arm 1, the weight is hung on the lifting hook 4, and the supporting mechanism 5 can always provide upward supporting force for the movable arm 2 along with the continuous extension of the movable arm 2, so that the possibility of deformation of the movable arm 2 is reduced.
Referring to fig. 1 and 2, the support mechanisms 5 are provided in two sets in the width direction of the movable arm 2, and the two sets of support mechanisms 5 are symmetrical with respect to the width direction of the movable arm 2. The supporting mechanism 5 comprises a supporting rod 6 and a limiting component 7 used for fixing the supporting rod 6, one end of the supporting rod 6 is hinged to the lower surface of the movable arm 2, and the supporting rod 6, the horizontal movable arm 2, the fixed arm 1 and the vertical rack 3 enclose a triangle. The waist-shaped groove 8 is formed in the supporting rod 6, the waist-shaped groove 8 is formed in the length direction of the supporting rod 6, the fixing rod 9 penetrating the waist-shaped groove 8 is fixedly connected to the rack 3, the fixing rod 9 is located below the fixing arm 1, and when the movable arm 2 contracts, the supporting rod 6 can rotate relative to the fixing rod 9 and slide relative to the fixing rod.
Referring to fig. 1 and 2, after the hook 4 lifts a heavy object and the movable arm 2 extends out of the fixed arm 1, the support rod 6 rotates around the movable rod along with the extension of the movable arm 2, and simultaneously the fixed rod 9 slides in a self-inclined direction. When the digging arm 2 stopped, the digging arm 2 had the trend of buckling downwards under the effect of heavy object, and the digging arm 2 applyed decurrent effort to bracing piece 6, and spacing subassembly 7 can carry on spacingly to bracing piece 6 this moment, prevents that bracing piece 6 from rotating, and under the combined action of digging arm 2 and spacing subassembly 7, bracing piece 6 kept static, and bracing piece 6 will applyed ascending reaction force to digging arm 2 to the possibility that digging arm 2 warp has been reduced.
Referring to fig. 1 and 3, the fixing rod 9 is rotatably sleeved with a rotating sleeve 10, the rotating sleeve 10 penetrates through the kidney-shaped groove 8, one end of the fixing rod 9, which extends out of the rotating sleeve 10, is connected with a blocking block 24 in a threaded manner, and the blocking block 24 is arranged to prevent the supporting rod 6 from being separated from the fixing rod 9. The fixing rod 9 is sleeved with an elastic layer 11, the elastic layer 11 is a silicon PU elastic layer, and the elastic layer 11 is positioned between the fixing rod 9 and the rotating sleeve 10. When the support rod 6 slides, the rotating sleeve 10 rotates around the fixed rod 9, so that the sliding friction between the support rod 6 and the fixed rod 9 is changed into rolling friction, and the friction force between the support rod 6 and the fixed rod 9 is reduced. When the movable arm 2 stretches, the pressure between the support rod 6 and the fixed rod 9 is large, and the elastic layer 11 can reduce the possibility that the fixed rod 9 is abraded.
Referring to fig. 2 and 4, the stop assembly 7 includes a vertically disposed telescoping rod 12 and a spring 13. The telescopic rod 12 comprises an upper rod 14 and a lower rod 15, a fixing block 16 is fixedly connected to the side wall of the rack 3, and the upper rod 14 is fixedly connected to the fixing block 16. The upper rod 14 is provided with a first slot 17 on one side facing the lower rod 15, and the lower rod 15 is slidably inserted into the first slot 17. A second slot 18 is formed in one surface, facing the upper rod 14, of the lower rod 15, the spring 13 is located in the first slot 17 or the second slot 18, one end of the spring 13 is fixedly connected with the fixing block 16, and the other end of the spring 13 is fixedly connected with the bottom wall of the second slot 18. Spacing groove 19 has been seted up with the one side of 12 butts of telescopic link to bracing piece 6, and spacing groove 19 is worked as to setting up along the length of bracing piece 6, and the tip fixedly connected with branch 20 of upper boom 14 is kept away from to lower beam 15, and branch 20 slidable ground lies in spacing groove 19, and the tip ball joint of branch 20 has rolling pearl 21, and rolling pearl 21 and the diapire butt of spacing groove 19, when the digging arm 2 was flexible, rolling pearl 21 and the diapire rolling contact of spacing groove 19.
Referring to fig. 2 and 4, as the movable arm 2 extends out of the fixed arm 1, the end of the support bar 6 away from the movable arm 2 moves upward, causing the lower bar 15 to slide upward, the lower bar 15 compressing the spring 13. After the movable arm 2 stops, the movable arm 2 applies downward pressure to the supporting rod 6, so that the supporting rod 6 has a tendency of rotating around the fixing rod 9, the compressed spring 13 applies a vertical downward force to the lower rod 15, the supporting rod 6 is prevented from rotating, the supporting rod 6 applies upward reaction force to the movable arm 2, and the limiting of the supporting rod 6 is realized. When the digging arm 2 is flexible, relative slip takes place between telescopic link 12 and the bracing piece 6, and the setting up of rolling pearl 21 can reduce the frictional force between telescopic link 12 and the bracing piece 6, reduces the possibility that telescopic link 12 is worn and torn, and rolls pearl 21 and be located spacing groove 19, can reduce the possibility that telescopic link 12 and bracing piece 6 misplaced.
Referring to fig. 2, a vertical guide groove 22 is formed in the side wall of the rack 3, the guide groove 22 is located right below the telescopic rod 12, the guide groove 22 is a dovetail groove, a guide block 23 is fixedly connected to one surface of the lower rod 15 facing the rack 3, and the guide block 23 is located in the guide groove 22 and is in sliding fit with the guide groove 22.
The implementation principle of the high-load telescopic boom in the embodiment of the application is as follows: when the cargo boom lifts a heavy object and the movable arm 2 extends out, the position of the fixed rod 9 is used as a fulcrum, the telescopic rod 12 applies downward acting force to the support rod 6 under the action of elastic potential energy of the spring 13, and through the lever principle, the end, hinged to the movable arm 2, of the support rod 6 applies upward acting force to the movable arm 2, so that the possibility of bending and deformation of the movable arm 2 is reduced.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. The utility model provides a telescopic jib loading boom of high load, includes fixed arm (1), digging arm (2) and frame (3) that are used for installing fixed arm (1), and fixed arm (1) is square pipe, and digging arm (2) are pegged graft in fixed arm (1), its characterized in that: be equipped with supporting mechanism (5) that are used for supporting digging arm (2) on frame (3), supporting mechanism (5) include bracing piece (6) and spacing subassembly (7) that are used for fixed stay pole (6), the one end of bracing piece (6) articulates on digging arm (2), kidney slot (8) have been seted up on bracing piece (6), the length direction setting of bracing piece (6) is followed in kidney slot (8), be connected with dead lever (9) that pass kidney slot (8) on frame (3), dead lever (9) are located the below of fixed arm (1), during digging arm (2) shrink, bracing piece (6) can take place relative slip and relative rotation with dead lever (9).
2. A high load telescopic boom as claimed in claim 1, characterized in that: spacing subassembly (7) include telescopic link (12) and spring (13), telescopic link (12) and spring (13) are all flexible along frame (3) length direction, telescopic link (12) are including upper boom (14) and lower beam (15) of pegging graft each other, upper boom (14) are fixed in on frame (3) and are located the top of dead lever (9), the axial of spring (13) and the axial syntropy of telescopic link (12), the one end and frame (3) fixed connection of spring (13), the other end and lower beam (15) fixed connection of spring (13), the tip and bracing piece (6) butt of lower beam (15).
3. A high load telescopic boom as claimed in claim 2, characterized in that: spacing groove (19) have been seted up with the one side of telescopic link (12) butt in bracing piece (6), and telescopic link (12) are connected with roll pearl (21) with the one end of bracing piece (6) butt, roll the diapire butt of pearl (21) and spacing groove (19), and when digging arm (2) were flexible, roll the diapire rolling contact of pearl (21) and spacing groove (19).
4. A high load telescopic boom as claimed in claim 2, characterized in that: be equipped with the direction subassembly on frame (3), the direction subassembly includes guide way (22) and guide block (23), and on frame (3) was seted up in guide way (22), the length direction of guide way (22) and the length direction syntropy of telescopic link (12), lower beam (15) are fixed with guide block (23) towards the one side of frame (3), guide block (23) be located guide way (22) and with guide way (22) sliding fit.
5. A high load telescopic boom as claimed in claim 4, characterized in that: the guide groove (22) is a dovetail groove.
6. A high load telescopic boom as claimed in claim 1, characterized in that: the fixing rod (9) is rotatably sleeved with a rotating sleeve (10), the rotating sleeve (10) penetrates through the kidney-shaped groove (8), and one end, extending out of the rotating sleeve (10), of the fixing rod (9) is connected with a blocking block (24) through threads.
7. A high load telescopic boom as claimed in claim 6, characterized in that: the fixing rod (9) is sleeved with an elastic layer (11), and the elastic layer (11) is located between the rotating sleeve (10) and the fixing rod (9).
8. A high load telescopic boom as claimed in claim 1, characterized in that: two groups of supporting mechanisms (5) are arranged along the width direction of the movable arm (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110651074.1A CN113277429B (en) | 2021-06-10 | 2021-06-10 | High-load telescopic crane boom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110651074.1A CN113277429B (en) | 2021-06-10 | 2021-06-10 | High-load telescopic crane boom |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113277429A true CN113277429A (en) | 2021-08-20 |
| CN113277429B CN113277429B (en) | 2022-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110651074.1A Active CN113277429B (en) | 2021-06-10 | 2021-06-10 | High-load telescopic crane boom |
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| CN (1) | CN113277429B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108163725A (en) * | 2018-03-19 | 2018-06-15 | 丁路勇 | A kind of power equipment hanging apparatus folded convenient for storage |
| KR20190066354A (en) * | 2017-12-05 | 2019-06-13 | 대우조선해양 주식회사 | Cylinder action point moving type hand crane |
| CN110654991A (en) * | 2019-11-06 | 2020-01-07 | 国网新疆电力有限公司阿克苏供电公司 | Portable hoisting support |
| CN112623971A (en) * | 2020-11-18 | 2021-04-09 | 浙江海潮起重机械有限公司 | Safe and reliable type hoist |
| CN112850487A (en) * | 2021-02-09 | 2021-05-28 | 台州学院 | Gravity center adjustable building wallboard hoisting equipment |
-
2021
- 2021-06-10 CN CN202110651074.1A patent/CN113277429B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20190066354A (en) * | 2017-12-05 | 2019-06-13 | 대우조선해양 주식회사 | Cylinder action point moving type hand crane |
| CN108163725A (en) * | 2018-03-19 | 2018-06-15 | 丁路勇 | A kind of power equipment hanging apparatus folded convenient for storage |
| CN110654991A (en) * | 2019-11-06 | 2020-01-07 | 国网新疆电力有限公司阿克苏供电公司 | Portable hoisting support |
| CN112623971A (en) * | 2020-11-18 | 2021-04-09 | 浙江海潮起重机械有限公司 | Safe and reliable type hoist |
| CN112850487A (en) * | 2021-02-09 | 2021-05-28 | 台州学院 | Gravity center adjustable building wallboard hoisting equipment |
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| Publication number | Publication date |
|---|---|
| CN113277429B (en) | 2022-01-21 |
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