CN203486805U - Support leg structure with inserting and pulling pin device and crane with support leg structure - Google Patents
Support leg structure with inserting and pulling pin device and crane with support leg structure Download PDFInfo
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- CN203486805U CN203486805U CN201320643152.4U CN201320643152U CN203486805U CN 203486805 U CN203486805 U CN 203486805U CN 201320643152 U CN201320643152 U CN 201320643152U CN 203486805 U CN203486805 U CN 203486805U
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- 230000008878 coupling Effects 0.000 claims description 22
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- 230000000694 effects Effects 0.000 claims description 10
- 239000011148 porous material Substances 0.000 claims description 10
- 230000007246 mechanism Effects 0.000 claims description 3
- 230000009471 action Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 17
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Abstract
The utility model provides a support leg structure with an inserting and pulling pin device. The support leg structure comprises a support leg, a support part and a horizontal cylinder, wherein the support leg comprises a main support leg and a movable support leg arranged on the main support leg; the movable support leg can stretch and withdraw along the axial direction of the support leg under the action of the horizontal cylinder; the support part is connected with the movable support leg; the main support leg is provided with a limiting hole; the movable support leg is provided with an inserting and pulling pin, and the support let also comprises an inserting and pulling pin device; the inserting and pulling pin device is arranged inside the movable support leg; the inserting and pulling pin device comprises a cylinder, an inserting and pulling pin base, a hinge pin and a spring; the inserting and pulling pin base is arranged on the inner wall of the movable support leg; the cylinder is arranged on the inserting and pulling pin base and is connected with the hinge pin; the hinge pin and the spring are arranged inside the inserting and pulling pin base; the cylinder drives the hinge pin to withdraw back to the inserting and pulling pin base and compress the spring after being started; the spring drives the hinge pin to stretch to the inserting and pulling pin hole and the limiting hole by virtue of the compression elastic force when the cylinder is shut down.
Description
Technical field
The utility model relates to weight-lifting equipment field, relates in particular to a kind of hoisting crane that has the leg structure of pin inserting-pulling device and have this leg structure.
Background technology
At present, along with wheel crane is to the development of large-tonnage and super-tonnage, for increasing the load-carrying ability of wheel crane when the hoisting operation, hoisting crane is all provided with supporting leg, the stability while improving hoisting crane work by increasing the span of supporting leg.The amount of deflection when span of supporting leg increases between its supporting leg also increases thereupon, for reducing the amount of deflection between supporting leg, is provided with cable arrangement between supporting leg, and this set has the supporting leg of cable arrangement to be drag-line supporting leg.
Existing drag-line supporting leg comprises supporting leg, support portion, cross cylinder and cable arrangement.Supporting leg comprises main supporting leg and is sheathed on the movable supporting legs on main supporting leg, movable supporting legs can endwisely slip along supporting leg, movable supporting legs below is fixed in one end of support portion, the other end of support portion is pressed on the ground, the two ends of cross cylinder are individually fixed on main supporting leg and movable supporting legs, and cross cylinder provides power for movable supporting legs is flexible.The two ends of cable arrangement are individually fixed on the side of main supporting leg and movable supporting legs, and cable arrangement can reduce the amount of deflection between main supporting leg and movable supporting legs, play the effect of the large span supporting leg of protection hoisting crane.
Yet drag-line supporting leg of the prior art, owing to having increased cable arrangement, can produce the load of horizontal direction between supporting leg, therefore need be provided for the bearing pin of fixing main supporting leg and movable supporting legs in supporting leg, to transmit the load between supporting leg.The plug of bearing pin generally adopts manual type or oil cylinder to control pluggable mode: manual type exists the shortcomings such as efficiency is low, labour intensity is large; Oil cylinder is controlled plug mode because oil cylinder volume is larger, and supporting leg inner space is limited, can produce the problem that cannot arrange oil cylinder.
Utility model content
In view of above-mentioned condition, be necessary to provide a kind of hoisting crane that there is the leg structure of pin inserting-pulling device and there is this leg structure.
The utility model provides a kind of leg structure with pin inserting-pulling device, comprise supporting leg, support portion and cross cylinder, described supporting leg comprises main supporting leg and is arranged on the movable supporting legs on main supporting leg, described movable supporting legs can be along the axial stretching of described supporting leg under the effect of described cross cylinder, described support portion is connected on described movable supporting legs, on described main supporting leg, be provided with spacing hole, on described movable supporting legs, be provided with plug pin-and-hole, described leg structure also comprises pin inserting-pulling device, described pin inserting-pulling device is arranged in described movable supporting legs, described pin inserting-pulling device comprises cylinder, plug key seat, bearing pin and spring, described plug key seat is arranged on the inwall of described movable supporting legs, described cylinder is arranged on described plug key seat and with described bearing pin and is connected, described bearing pin and spring fitting are in described plug key seat, described cylinder drives described bearing pin to be retracted in described plug key seat when opening and described bearing pin compresses described spring, elastic force when described spring relies on compression when described cylinder is closed drives described bearing pin to extend out in described plug pin-and-hole and described spacing hole.
According to an embodiment of the present utility model, described plug key seat comprises closed end, pedestal and fixed end, described pedestal is hollow tube-shape structure, one end of described pedestal is connected with described closed end, the other end of described pedestal is connected with described fixed end, described plug key seat is fixed on by described fixed end on the inwall of described movable supporting legs, and described spring is housed in described pedestal and is located between described bearing pin and described closed end.
According to an embodiment of the present utility model, described pin inserting-pulling device also comprises connecting pin, and described connecting pin is fixed together the piston rod of described bearing pin and described cylinder.
According to an embodiment of the present utility model, described bearing pin is provided with accepting hole and connecting bore, described accepting hole is arranged at the axial centre of the coupling end of described bearing pin, described accepting hole can be accommodated the piston rod of described cylinder, described connecting bore is arranged on the sidewall of described bearing pin and the axial centre of vertical described bearing pin, described connecting bore is communicated with described accepting hole, on the free end of the piston rod of described cylinder, be provided with through hole, described through hole is perpendicular to described piston rod axial centre, and described connecting pin inserts in described connecting bore and described through hole and is positioned at described bearing pin.
According to an embodiment of the present utility model, when described bearing pin extend out in described plug pin-and-hole and described spacing hole, described spring is still compressive state and has coupling mechanism force, described bearing pin can not bounced back.
According to an embodiment of the present utility model, between described plug pin-and-hole and described spacing hole, overlap mutually while putting in place described movable supporting legs is flexible.
According to an embodiment of the present utility model, described pin inserting-pulling device is two, and described two pin inserting-pulling devices are symmetrically fixed on the inwall of described movable supporting legs both sides.
According to an embodiment of the present utility model, described main supporting leg comprises coupling end and socket end, described coupling end is for being connected with vehicle frame, described movable supporting legs comprises support end and abutting end, described support end is connected with described support portion, described socket end and described abutting end connect together mutually, and described plug pin-and-hole is arranged at the abutting end both sides of described movable supporting legs, and the pore size of described plug pin-and-hole can allow described bearing pin freely to pass through.
According to an embodiment of the present utility model, described spacing hole is arranged at the both sides of described main supporting leg and is at least two pairs, a pair of described spacing hole is positioned at described coupling end both sides, a pair of described spacing hole is positioned at described socket end both sides, and the pore size of described spacing hole can allow described bearing pin freely to pass through.
A hoisting crane, described hoisting crane comprises the described leg structure with pin inserting-pulling device.
The beneficial effect that the technical scheme of the utility model embodiment is brought is: as mentioned above, leg structure of the present utility model, owing to comprising pin inserting-pulling device, can realize automatic pinning and pull pin, cylinder is single-acting cylinder, has simplified control system, and work efficiency is high; Secondly, cylinder is single-acting cylinder, makes pin inserting-pulling device small volume, can be arranged on movable supporting legs inside, has met movable supporting legs inner space arrangement requirement; In addition, pin inserting-pulling device adopts the plug of cylinder and spring co-controlling bearing pin, and spring is both as the propulsion source of latch, the latching force while entirely stretching as bearing pin again.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the utility model embodiment, below the accompanying drawing of required use during embodiment is described is briefly described.
Fig. 1 is the structural representation of the leg structure of the utility model embodiment;
Fig. 2 is the cross section structure schematic diagram of the leg structure of the utility model embodiment in unlock state;
Fig. 3 is the cross section structure schematic diagram that the leg structure of the utility model embodiment is in the lock state;
Fig. 4 is the decomposing schematic representation of pin inserting-pulling device chief component;
Fig. 5 is the combination schematic diagram of pin inserting-pulling device chief component.
The specific embodiment
For further setting forth the utility model, be to reach technological means and the effect that predetermined utility model object is taked, below in conjunction with accompanying drawing and preferred embodiment, to the specific embodiment of the present utility model, structure, feature and effect thereof, be described in detail as follows.
Refer to shown in Fig. 1 to Fig. 5, the leg structure 100 of the utility model embodiment, comprises supporting leg 10, support portion 20, cable arrangement 30, cross cylinder 40 and pin inserting-pulling device 50.
Supporting leg 10 is arranged at the sidepiece of vehicle frame (not shown).Supporting leg 10 comprises main supporting leg 12 and movable supporting legs 14.Main supporting leg 12 and movable supporting legs 14 are telescoping structure, and in the present embodiment, movable supporting legs 14 is positioned at the inside of main supporting leg 12, and connects together, and its structure is not limited to this.Movable supporting legs 14 can move with respect to the axial stretching of supporting leg 10.Main supporting leg 12 comprises coupling end 122 and socket end 124.Coupling end 122 is connected with vehicle frame, and this is fixedly connected with and is generally chain connection.Socket end 124 is sheathed on the outside or inner of movable supporting legs 14, and in the present embodiment, socket end 124 is sheathed on the outside of movable supporting legs 14, and movable supporting legs 14 is interior flexible at main supporting leg 12.Main supporting leg 12 also comprises spacing hole 126, spacing hole 126 is arranged at the two ends of main supporting leg 12, spacing hole 126 is at least two pairs, every one end of main supporting leg 12 is provided with a pair of, and wherein a pair of Liang Ge spacing hole 126 lays respectively at the both sides of coupling end 122, another right Liang Ge spacing hole 126 lays respectively at the both sides of socket end 124.Movable supporting legs 14 comprises support end 142 and abutting end 144.Support end 142 extends to form downward vertically for the overhanging one end of movable supporting legs 14, and support end 142 bottoms are fixedly connected with support portion 20, and this is fixedly connected with can be welding, riveted joint.Abutting end 144 and socket end 124 socket slidably, realize main supporting leg 12 and be connected with the axial scalability of movable supporting legs 14.Movable supporting legs 14 also comprises plug pin-and-hole 146, plug pin-and-hole 146 is two and is arranged at respectively abutting end 144 both sides of movable supporting legs 14, plug pin-and-hole 146Yu spacing hole 126 sizes are identical, position in correspondence with each other, when movable supporting legs 14 is during along flexible the putting in place of main supporting leg 12, plug pin-and-hole 146Yu spacing hole 126 can overlap mutually.The pore size of plug pin-and-hole 146Yu spacing hole 126 can allow the bearing pin 54 of pin inserting-pulling device 50 freely to pass through.
One end of cross cylinder 40 is fixed on coupling end 122 inwalls of main supporting leg 12, and the other end of cross cylinder 40 is fixed on movable supporting legs 14 inwalls.Cross cylinder 40 moves along supporting leg 10 axial stretchings for controlling movable supporting legs 14.
Pin inserting-pulling device 50 is arranged at movable supporting legs 14 inside of supporting leg 10, and pin inserting-pulling device 50 is two and is symmetrically fixed on the inwall of movable supporting legs 14 both sides.Pin inserting-pulling device 50 comprises cylinder 51, plug key seat 52, connecting pin 53, bearing pin 54 and spring 55.
Connecting pin 53 is the d-axis that diameter dimension is less, and connecting pin 53 is fixed together the piston rod of cylinder 51 514 and bearing pin 54, and connecting pin 53 length equal bearing pin 54 diameters.
Bearing pin 54 is cylindrical structure or prism structure, and bearing pin 54 is corresponding with the structure of plug key seat 52, and bearing pin 54 can stretch into from fixed end 528 central openings of plug key seat 52 pedestal 524 inside of plug key seat 52.Bearing pin 54 comprises accepting hole 542 and connecting bore 544.Accepting hole 542 is arranged at the axial centre of the coupling end 548 of bearing pin 54, and the pore size of accepting hole 542 can allow piston rod 514 free ends of cylinder 51 to insert wherein, and accepting hole 542 can be accommodated the piston rod 514 of cylinder 51.Connecting bore 544 is arranged on coupling end 548 sidewalls of bearing pin 54 and perpendicular to the axial centre of bearing pin 54, connecting bore 544 is communicated with accepting hole 542.The aperture of connecting bore 544 is less than accepting hole 542 apertures, and the pore size of connecting bore 544 can allow connecting pin 53 to insert wherein.After bearing pin 54 is housed in pedestal 524, accepting hole 542 is contained in piston rod 514 free ends wherein, through hole 518 on adjusting piston bar 514 free ends makes it to aim at connecting bore 544, and connecting pin 53 is fixed together piston rod 514 and bearing pin 54 through connecting bore 544 and through hole 518.The free end 546 of bearing pin 54 is to plug key seat 52 extensions.
Please refer to the drawing 4, Fig. 5, cylinder 51 is fixed on plug key seat 52, piston rod 514 free ends of cylinder 51 are positioned at plug key seat 52, spring 55 is put into plug key seat 52 and is looped around outside piston rod 514, the coupling end 548 of bearing pin 54 is pressed into plug key seat 52 appropriate locations, piston rod 514 free ends of cylinder 51 are inserted in the accepting hole 542 of bearing pin 54, the through hole 518 of adjusting piston bar 514, the perforate 526 of the connecting bore 544 of bearing pin 54 and plug key seat 52 makes it to aim at, connecting pin 53 is passed to perforate 526, connecting bore 544 and through hole 518, piston rod 514 and bearing pin 54 are fixed together, and connecting pin 53 be positioned at bearing pin 54 not with plug key seat 52 have any contact, the fixed end 528 of pin inserting-pulling device 50 by plug key seat 52 is fixed on the inwall of plug pin-and-hole 146 peripheries of movable supporting legs 14 (please refer to the drawing 2 and Fig. 3).
Refer to shown in Fig. 2 and Fig. 3, the principle of work of utilizing the 50 pairs of bearing pins 54 of pin inserting-pulling device in above-described embodiment to plug is as follows:
Latch step: when movable supporting legs 14 stretches or shrinks under the effect of cross cylinder 40, cylinder 51 is in opening, cylinder 51 is pulled to bearing pin 54 pedestal 524 that is positioned at plug key seat 52, now spring 55 in pedestal 524 in compressive state.When movable supporting legs 14 stretches or is contracted to soon close to extended position or punctured position, shifter cylinder 51, under the effect of the elastic force that spring 55 produces in compression, bearing pin 54 is stretched out from the interior top of pedestal 524 of plug key seat 52, make bearing pin 54 extend through plug pin-and-hole 146 the final top of movable supporting legs 14 the inwall place that is resisted against main supporting leg 12, now movable supporting legs 14 continues slightly stretch or shrink under the effect of cross cylinder 40 again, when the plug pin-and-hole 146 of movable supporting legs 14 and the spacing hole of main supporting leg 12 126 overlaps mutually, bearing pin 54 inserts spacing hole 126 under the impetus of elastic force, realize the latch of pin inserting-pulling device 50, make to realize and lock (please refer to the drawing 3) between movable supporting legs 14 and main supporting leg 12.At bearing pin 54, insert after spacing hole 126, the piston rod 514 of cylinder 51 is in entirely stretching state, but now spring 55 is not in entirely stretching state, that is to say, spring 55 is now still in certain compressive state and a pretension compressive force is provided, and by the pretension compressive force of spring 55, bearing pin 54 is locked in spacing hole 126, obtains bearing pin 54 and is unlikely to automatic retracted, be spring 55 both as the propulsion source of latch, the latching force while entirely stretching as bearing pin 54 again.
The step of pulling pin: when bearing pin 54 being extracted from the spacing hole 126 of main supporting leg 12, and while removing the locking between movable supporting legs 14 and main supporting leg 12, open cylinder 51, control cylinder 51 shrinks, make bearing pin 54 shift out the spacing hole 126 of main supporting leg 12, and overcome the elastic force of spring 55 to the interior retraction of pedestal 524 of plug key seat 52, thus remove the locking between movable supporting legs 14 and main supporting leg 12, realize pull pin (please refer to the drawing 2) of pin inserting-pulling device 50.After pulling pin, movable supporting legs 14 can stretch or shrink under the effect of cross cylinder 40, wait stretching or shrink while putting in place, can again carry out latch action, to realize the locking between movable supporting legs 14 and main supporting leg 12.
The hoisting crane of the utility model embodiment, comprises above-mentioned leg structure 100.Understandably, pin inserting-pulling device 50 can also be applied to any occasion of other power plug bearing pin.
The beneficial effect that the technical scheme of the utility model embodiment is brought is: as mentioned above, leg structure 100 of the present utility model, owing to comprising pin inserting-pulling device 50, can realize automatic pinning and pull pin, cylinder 51 is single-acting cylinder, has simplified control system, and work efficiency is high; Secondly, cylinder 51 is single-acting cylinder, makes pin inserting-pulling device 50 small volumes, can be arranged on movable supporting legs 14 inside, has met movable supporting legs 14 inner space arrangement requirement; In addition, pin inserting-pulling device 50 adopts the plug of cylinder 51 and spring 55 co-controlling bearing pins 54, spring 55 relies on elastic force to drive bearing pin 54 to extend out in plug pin-and-hole 146He spacing hole 126, and spring 55 is still now compressive state, there is locking (holding out against) power, bearing pin 54 can not bounced back, so spring 55 is both as the propulsion source of latch, the latching force while entirely stretching as bearing pin 54 again.
The above, it is only preferred embodiment of the present utility model, not the utility model is done to any pro forma restriction, although the utility model discloses as above with preferred embodiment, yet not in order to limit the utility model, any those skilled in the art, do not departing within the scope of technical solutions of the utility model, when can utilizing the technology contents of above-mentioned announcement to make a little change or being modified to the equivalent embodiment of equivalent variations, in every case be not depart from technical solutions of the utility model content, any simple modification of above embodiment being done according to technical spirit of the present utility model, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.
Claims (10)
1. a leg structure (100) with pin inserting-pulling device, comprise supporting leg (10), support portion (20) and cross cylinder (40), described supporting leg (10) comprises main supporting leg (12) and is arranged on the movable supporting legs (14) on main supporting leg (12), described movable supporting legs (14) can be along the axial stretching of described supporting leg (10) under the effect of described cross cylinder (40), described support portion (20) is connected on described movable supporting legs (14), it is characterized in that: on described main supporting leg (12), be provided with spacing hole (126), on described movable supporting legs (14), be provided with plug pin-and-hole (146), described leg structure (100) also comprises pin inserting-pulling device (50), described pin inserting-pulling device (50) is arranged in described movable supporting legs (14), described pin inserting-pulling device (50) comprises cylinder (51), plug key seat (52), bearing pin (54) and spring (55), described plug key seat (52) is arranged on the inwall of described movable supporting legs (14), described cylinder (51) is arranged on described plug key seat (52) above and is connected with described bearing pin (54), described bearing pin (54) and spring (55) are arranged in described plug key seat (52), described cylinder (51) drives described bearing pin (54) to be retracted in described plug key seat (52) when opening and described bearing pin (54) compresses described spring (55), elastic force when described spring (55) relies on compression when described cylinder (51) is closed drives described bearing pin (54) to extend out in described plug pin-and-hole (146) and described spacing hole (126).
2. the leg structure (100) with pin inserting-pulling device as claimed in claim 1, it is characterized in that: described plug key seat (52) comprises closed end (522), pedestal (524) and fixed end (528), described pedestal (524) is hollow tube-shape structure, one end of described pedestal (524) is connected with described closed end (522), the other end of described pedestal (524) is connected with described fixed end (528), described plug key seat (52) is fixed on the inwall of described movable supporting legs (14) by described fixed end (528), described spring (55) is housed in described pedestal (524) and is located between described bearing pin (54) and described closed end (522).
3. the leg structure (100) with pin inserting-pulling device as claimed in claim 2, it is characterized in that: described pin inserting-pulling device (50) also comprises connecting pin (53), described connecting pin (53) is fixed together described bearing pin (54) and the piston rod (514) of described cylinder (51).
4. the leg structure (100) with pin inserting-pulling device as claimed in claim 3, it is characterized in that: described bearing pin (54) is provided with accepting hole (542) and connecting bore (544), described accepting hole (542) is arranged at the axial centre of the coupling end (548) of described bearing pin (54), described accepting hole (542) can be accommodated the piston rod (514) of described cylinder (51), described connecting bore (544) is arranged on the sidewall of described bearing pin (54) and the axial centre of vertical described bearing pin (54), described connecting bore (544) is communicated with described accepting hole (542), on the free end of the piston rod (514) of described cylinder (51), be provided with through hole (518), described through hole (518) is perpendicular to described piston rod (514) axial centre, described connecting pin (53) inserts in described connecting bore (544) and described through hole (518) and is positioned at described bearing pin (54).
5. the leg structure (100) with pin inserting-pulling device as claimed in claim 1, it is characterized in that: described bearing pin (54) extend out to described plug pin-and-hole (146) and described spacing hole (126) when interior, described spring (55) is still compressive state and has coupling mechanism force, described bearing pin (54) can not bounced back.
6. the leg structure (100) with pin inserting-pulling device as claimed in claim 1, is characterized in that: between described plug pin-and-hole (146) and described spacing hole (126), overlap mutually while putting in place described movable supporting legs (14) is flexible.
7. the leg structure (100) with pin inserting-pulling device as claimed in claim 1, is characterized in that: described pin inserting-pulling device (50) is two, and described two pin inserting-pulling devices (50) are symmetrically fixed on the inwall of described movable supporting legs (14) both sides.
8. the leg structure (100) with pin inserting-pulling device as claimed in claim 7, it is characterized in that: described main supporting leg (12) comprises coupling end (122) and socket end (124), described coupling end (122) is for being connected with vehicle frame, described movable supporting legs (14) comprises support end (142) and abutting end (144), described support end (142) is connected with described support portion (20), described socket end (124) connects together mutually with described abutting end (144), described plug pin-and-hole (146) is arranged at abutting end (144) both sides of described movable supporting legs (14), the pore size of described plug pin-and-hole (146) can allow described bearing pin (54) freely to pass through.
9. the leg structure (100) with pin inserting-pulling device as claimed in claim 8, it is characterized in that: described spacing hole (126) is arranged at the both sides of described main supporting leg (12) and is at least two pairs, a pair of described spacing hole (126) is positioned at described coupling end (122) both sides, a pair of described spacing hole (126) is positioned at described socket end (124) both sides, and the pore size of described spacing hole (126) can allow described bearing pin (54) freely to pass through.
10. a hoisting crane, is characterized in that: described hoisting crane comprises the leg structure (100) as in one of claimed in any of claims 1 to 9 with pin inserting-pulling device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320643152.4U CN203486805U (en) | 2013-10-18 | 2013-10-18 | Support leg structure with inserting and pulling pin device and crane with support leg structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320643152.4U CN203486805U (en) | 2013-10-18 | 2013-10-18 | Support leg structure with inserting and pulling pin device and crane with support leg structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203486805U true CN203486805U (en) | 2014-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320643152.4U Expired - Lifetime CN203486805U (en) | 2013-10-18 | 2013-10-18 | Support leg structure with inserting and pulling pin device and crane with support leg structure |
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| Country | Link |
|---|---|
| CN (1) | CN203486805U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104310247A (en) * | 2014-09-22 | 2015-01-28 | 中联重科股份有限公司 | Landing leg supporting structure and automobile crane |
| CN107339071A (en) * | 2017-02-24 | 2017-11-10 | 中建钢构有限公司 | A kind of floating type well drilling heave compensator |
| WO2022267935A1 (en) * | 2021-06-25 | 2022-12-29 | 湖南三一中型起重机械有限公司 | Plugging pin connection assembly, crane boom, and crane |
| WO2023045194A1 (en) * | 2021-09-24 | 2023-03-30 | 北京三一智造科技有限公司 | Pin shaft disassembly and assembly apparatus, frame connecting structure, and work machine |
| US11786998B2 (en) | 2021-09-24 | 2023-10-17 | Beijing Sany Intelligent Manufacturing Technology Co., Ltd. | Pin shaft dismounting and mounting device, frame body connecting structure and work machine |
-
2013
- 2013-10-18 CN CN201320643152.4U patent/CN203486805U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104310247A (en) * | 2014-09-22 | 2015-01-28 | 中联重科股份有限公司 | Landing leg supporting structure and automobile crane |
| CN104310247B (en) * | 2014-09-22 | 2016-06-08 | 中联重科股份有限公司 | Supporting leg supporting construction and autocrane |
| CN107339071A (en) * | 2017-02-24 | 2017-11-10 | 中建钢构有限公司 | A kind of floating type well drilling heave compensator |
| WO2022267935A1 (en) * | 2021-06-25 | 2022-12-29 | 湖南三一中型起重机械有限公司 | Plugging pin connection assembly, crane boom, and crane |
| WO2023045194A1 (en) * | 2021-09-24 | 2023-03-30 | 北京三一智造科技有限公司 | Pin shaft disassembly and assembly apparatus, frame connecting structure, and work machine |
| US11786998B2 (en) | 2021-09-24 | 2023-10-17 | Beijing Sany Intelligent Manufacturing Technology Co., Ltd. | Pin shaft dismounting and mounting device, frame body connecting structure and work machine |
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Granted publication date: 20140319 |
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| CX01 | Expiry of patent term |