CN102635106B - Dynamic compaction buffer damping method of crawler crane - Google Patents
Dynamic compaction buffer damping method of crawler crane Download PDFInfo
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- CN102635106B CN102635106B CN201210126931.7A CN201210126931A CN102635106B CN 102635106 B CN102635106 B CN 102635106B CN 201210126931 A CN201210126931 A CN 201210126931A CN 102635106 B CN102635106 B CN 102635106B
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Abstract
The invention relates to a dynamic compaction buffer damping method of a crawler crane. A buffer damping device is arranged on the rear side of a suspension arm of the crawler crane, the rebounding kinetic energy of the suspension arm and the rebounding upward gravity center potential energy of the suspension arm are slowly released through a damping function, impacts to a machine body and the suspension arm due to repeated oscillation are stopped; the suspension arm is connected with one end of a back stay bar member, the other end of the back stay bar member is connected with the buffer damping device, the other end of the buffer damping device is connected with a triangular support of the crane, the buffer damping device comprises a stop valve and a buffer damping cylinder with two pistons, the front cavity and rear cavity of the cylinder are communicated by adopting the stop valve, and the stop valve is a bidirectional two-position two-way electromagnetic valve. According to the invention, the impact to the crane by the rebounding kinetic energy of the suspension arm during unhooking of a dynamic compaction hammer can be rapidly relieved, and the impacts to the machine body and the suspension arm due to the repeated oscillation of the suspension arm are stopped.
Description
Technical field
The invention belongs to crawler crane technical field, be specifically related to reduce the method for crawler crane for strong rammer operating mode rebounce.
Background technology
Crawler crane is used for the strong rammer of basement process, when lifting by crane hammer ram, the elastic deformation of arm, airframe structure can put aside very large elastic potential energy, and arm bounce-back makes center of gravity upwards will produce potential energy.The bounce-back that the potential energy discharging elastic deformation when rammer unhooking can cause arm strong.Arm bounce-back kinetic energy produces very large impact force to arm and board, and arm and fuselage repeatedly can vibrate and repeatedly could stop.This impact and vibration are harmful to very much, may cause arm, board weld seam and the crackle of stress concentration portion position and the premature breakdown of revolving support.
Prior art mostly adopts and adds door shaped stent at arm head Dui Di Mian Installed, reduce elastic potential energy during lifting hammer ram, but often make a hammer ram and will move and adjust a door shaped stent by very large workload, owing to repeatedly moving and adjusting door shaped stent, trivial operations, efficiency are low and have considerable influence to safety in production; Simultaneously due to door shaped stent occupied ground, the applicable situation of jack is limited to some extent.
Summary of the invention
The technical problem to be solved in the present invention is, for reducing rebounce when strong rammer breaks off relations to the damage at the position such as crane arm, board, provide a kind of efficient, convenient, safe and reliable, take up an area little, adaptable crawler crane strong rammer buffer damping method.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of crawler crane strong rammer buffer damping method, it is characterized in that: at the rear side of crane arm, buffering damping device is set, by bounce-back kinetic energy and the arm bounce-back center of gravity potential energy upwards of damping action slow releasing arm, and stop the impact that arm vibrates repeatedly to body and arm; Arrange back up rod member on rear side of crane arm, back up rod member one end is connected with arm, and the other end is connected with buffering damping device, and the other end of buffering damping device is connected with the tripod of crane; Described buffering damping device comprises stop valve and is provided with the buffer damping oil cylinder of double-piston and buffer spring, by stop valve UNICOM between the ante-chamber of oil cylinder and back cavity.
By technique scheme, stop valve is two-way 2/2-way electromagnetic valve, and two hydraulic fluid ports are communicated with back cavity with the ante-chamber of buffer damping oil cylinder respectively.
By technique scheme, described buffer damping oil cylinder is the constant speed oil cylinder of double piston-rod, mainly comprise cylinder body, piston rod, secondary piston, back piston, buffer spring, secondary piston and piston rod are fixed and on piston, are provided with one way valve and resistance hole, and back piston is slidingly connected on the piston rod and can slides along piston rod; Buffer spring is placed between secondary piston and back piston.
By technique scheme, buffer damping oil cylinder one end connects back up rod member, and the other end connects the tripod of crane.
By technique scheme, when suspension arm variable-amplitude and lifting hammer ram, open stop valve, the ante-chamber before buffer damping oil cylinder secondary piston and the back cavity UNICOM after back piston, oil cylinder is in free-extension state; After hammer ram is mentioned, before preparing unhook, close stop valve, buffer damping oil cylinder enters the duty of buffer damping; When rammer unhooking makes arm rebound, allowing arm to swing backward around root pin makes buffer damping oil cylinder shorten stroke, piston rod now drives secondary piston to move backward, back piston is motionless, secondary piston compression buffer spring, hydraulic oil between secondary piston and back piston freely enters the ante-chamber before secondary piston by one way valve, this stage, the increment acting in conjunction of buffer spring and arm center of gravity upwards displacement potential energy absorbs the kinetic energy of bounce-back, reduces the reaction force that bears the impact force of board and arm of arm; After compression buffer spring terminates, buffer spring is upheld, and the potential energy of arm deadweight simultaneously reduces, and piston rod drives secondary piston to move forward, hydraulic oil is entered between two-piston by the damping hole of secondary piston and secondary piston is slowly moved forward, and consumes the potential energy of buffer spring and arm deadweight.
Relative to prior art, superiority of the present invention is: can rapid recovery strong rammer rammer unhooking time arm bounce-back kinetic energy to the impact of crane, by bounce-back kinetic energy and the arm bounce-back center of gravity potential energy upwards of damping slow On The Drug Release arm, and stop the impact that arm vibrates repeatedly to body and arm, reduce impact method relative to tradition, convenient and efficient, do not need repeatedly move and adjust door shaped stent; Simultaneously because buffer damping is arranged on the space between jack arm and tripod, structure simply, does not need to take support place separately, and jack can many occasions be suitable for.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further illustrated.
Fig. 1 is the connection diagram of buffering damping device of the present invention on crane.
Fig. 2 is the thin portion structural representation (the free extended configuration of spring) of buffer damping oil cylinder of the present invention.
Fig. 3 is the thin portion structural representation (spring retraction state) of buffer damping oil cylinder of the present invention.
In figure, each mark is corresponding as follows: 1. hammer ram, 2. arm, 3. back up rod member, 4. buffer damping oil cylinder, 5. stop valve, 6. tripod, 7. piston rod, 8. cylinder body, 9. secondary piston, 10. one way valve, 11. back pistons, 12. damping holes, 13. buffer springs.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in further detail.
Crawler crane strong rammer buffer damping method of the present invention, at the rear side of crane arm, buffering damping device is set, by bounce-back kinetic energy and the arm bounce-back center of gravity potential energy upwards of damping action slow releasing arm, and stop the impact that arm vibrates repeatedly to body and arm; Back up rod member 3 one end is connected with arm 2, and the other end is connected with buffering damping oil cylinder 4, and the other end of buffer damping oil cylinder 4 is connected with the tripod 6 of crane; By stop valve 5 UNICOM between the ante-chamber 9 and back cavity 11 of oil cylinder, stop valve 5 is two-way 2/2-way electromagnetic valve, and two hydraulic fluid ports are communicated with back cavity with the ante-chamber of buffer damping oil cylinder 4 respectively.
Buffer damping oil cylinder 4 is the constant speed oil cylinder of double piston-rod, this oil cylinder be by: cylinder body 8, piston rod 7, secondary piston 9, back piston 11, buffer spring 13 forms.Secondary piston 9 is fixed with piston rod 7, and back piston 11 can slide on piston rod 7.Buffer spring 13 is arranged between secondary piston 9 and back piston 11; Secondary piston 9 there are one way valve 10 and damping hole 12.
When arm 2 luffing and lifting hammer ram, open stop valve 5, the ante-chamber before buffer damping oil cylinder 4 secondary piston 9 and back piston 11 back cavity UNICOM below, oil cylinder 4 is in free-extension state; After hammer ram is mentioned, before preparing unhook, close stop valve 5, buffer damping oil cylinder 4 enters the duty of buffer damping.
When rammer unhooking arm rebounds, arm 2 is allowed to swing backward around root pin.Make buffer damping oil cylinder 4 shorten stroke, piston rod 7 drives secondary piston 9 to move backward, and back piston 11 is motionless, and secondary piston 9 compresses buffer spring 13, and the hydraulic oil between secondary piston 9 and back piston 11 freely enters the ante-chamber of the front portion of secondary piston 9 by one way valve 10; The increment acting in conjunction of buffer spring 13 and arm 2 center of gravity upwards displacement potential energy absorbs the kinetic energy of bounce-back, decreases the reaction force that the impact force of arm 2 pairs of boards and arm 2 bear.After compression buffer spring 13 terminates, buffer spring 13 is upheld, arm 2 conduct oneself with dignity potential energy reduce, piston rod 7 drives secondary piston 9 to move forward, hydraulic oil makes secondary piston 9 slowly move forward by the damping hole 12 of secondary piston 9, consumes the potential energy of buffer spring 13 and arm 2 deadweight.
Superiority of the present invention is: can rapid recovery strong rammer rammer unhooking time arm bounce-back kinetic energy to the impact of crane, by bounce-back kinetic energy and the arm bounce-back center of gravity potential energy upwards of damping slow On The Drug Release arm, and stop the impact that arm vibrates repeatedly to body and arm, reduce impact method relative to tradition, convenient and efficient, do not need repeatedly move and adjust door shaped stent; Simultaneously because buffer damping is arranged on the space between jack arm and tripod, structure simply, does not need to take support place separately, and jack can many occasions be suitable for.
Above disclosedly be only preferred embodiment of the present invention; certainly the interest field of the present invention can not be limited with this; therefore the equivalence change done according to the present patent application the scope of the claims, as the variation made technological parameter or device and improvement still belong to protection scope of the present invention.
Claims (1)
1. a crawler crane strong rammer buffer damping method, it is characterized in that: at the rear side of crane arm, buffering damping device is set, by bounce-back kinetic energy and the arm bounce-back center of gravity potential energy upwards of damping action slow releasing arm, and stop the impact that arm vibrates repeatedly to body and arm; Arrange back up rod member on rear side of crane arm, back up rod member one end is connected with arm, and the other end is connected with buffering damping device, and the other end of buffering damping device is connected with the tripod of crane; Described buffering damping device comprises stop valve and is provided with the buffer damping oil cylinder of double-piston and buffer spring, by stop valve UNICOM between the ante-chamber of oil cylinder and back cavity; Stop valve is two-way 2/2-way electromagnetic valve, and two hydraulic fluid ports are communicated with back cavity with the ante-chamber of buffer damping oil cylinder respectively; Described buffer damping oil cylinder is the constant speed oil cylinder of double piston-rod, mainly comprise cylinder body, piston rod, secondary piston, back piston and buffer spring, secondary piston and piston rod are fixed and on piston, are provided with one way valve and resistance hole, and back piston is slidingly connected on the piston rod and can slides along piston rod; Buffer spring is placed between secondary piston and back piston; Buffer damping oil cylinder one end connects back up rod member, and the other end connects the tripod of crane; When suspension arm variable-amplitude and lifting hammer ram, open stop valve, the ante-chamber before buffer damping oil cylinder secondary piston and the back cavity UNICOM after back piston, oil cylinder is in free-extension state; After hammer ram is mentioned, before preparing unhook, close stop valve, buffer damping oil cylinder enters the duty of buffer damping; When rammer unhooking makes arm rebound, allowing arm to swing backward around root pin makes buffer damping oil cylinder shorten stroke, piston rod now drives secondary piston to move backward, back piston is motionless, secondary piston compression buffer spring, hydraulic oil between secondary piston and back piston freely enters the ante-chamber before secondary piston by one way valve, this stage, the increment acting in conjunction of buffer spring and arm center of gravity upwards displacement potential energy absorbs the kinetic energy of bounce-back, reduces the reaction force that bears the impact force of board and arm of arm; After compression buffer spring terminates, buffer spring is upheld, and the potential energy of arm deadweight simultaneously reduces, and piston rod drives secondary piston to move forward, hydraulic oil is entered between two-piston by the damping hole of secondary piston and secondary piston is slowly moved forward, and consumes the potential energy of buffer spring and arm deadweight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210126931.7A CN102635106B (en) | 2012-04-27 | 2012-04-27 | Dynamic compaction buffer damping method of crawler crane |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210126931.7A CN102635106B (en) | 2012-04-27 | 2012-04-27 | Dynamic compaction buffer damping method of crawler crane |
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| CN102635106A CN102635106A (en) | 2012-08-15 |
| CN102635106B true CN102635106B (en) | 2015-05-20 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966087B (en) * | 2012-12-18 | 2015-04-22 | 中联重科股份有限公司 | Arm lifting device and engineering machinery with same |
| CN103046531B (en) * | 2012-12-20 | 2015-04-22 | 三一重工股份有限公司 | Dynamic compactor and anti-impact luffing mechanism thereof |
| CN103132501B (en) * | 2013-03-11 | 2015-02-11 | 中联重科股份有限公司 | Dynamic compaction machine |
| CN116219994B (en) * | 2023-03-13 | 2023-10-20 | 江苏筑港建设集团有限公司 | Automatic damping device for energy-saving dynamic compaction construction |
Citations (7)
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| EP0299118A1 (en) * | 1987-07-14 | 1989-01-18 | Ballast-Nedam Groep N.V. | Method and device for compacting soil |
| CN2089467U (en) * | 1991-05-11 | 1991-11-27 | 南通港务局狼山港务公司 | Butterfly spring hydraulic buffer |
| CN2171035Y (en) * | 1993-07-05 | 1994-07-06 | 王杰 | Hydraulic buffer |
| CN201818706U (en) * | 2010-09-14 | 2011-05-04 | 大连理工大学 | A vibration damping device for a main machine of a dynamic tamping machine |
| US20110147090A1 (en) * | 2009-12-21 | 2011-06-23 | Soilmec S.P.A. | Multi-functional machine adaptable for drilling, boring and lifting |
| CN202089711U (en) * | 2011-06-15 | 2011-12-28 | 长沙中联重工科技发展股份有限公司 | Back-inclination preventing buffer device for arm support |
| CN202148156U (en) * | 2011-07-28 | 2012-02-22 | 长沙中联重工科技发展股份有限公司 | Hydraulic spring type rear tipping prevention device of luffing tower crane |
-
2012
- 2012-04-27 CN CN201210126931.7A patent/CN102635106B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0299118A1 (en) * | 1987-07-14 | 1989-01-18 | Ballast-Nedam Groep N.V. | Method and device for compacting soil |
| CN2089467U (en) * | 1991-05-11 | 1991-11-27 | 南通港务局狼山港务公司 | Butterfly spring hydraulic buffer |
| CN2171035Y (en) * | 1993-07-05 | 1994-07-06 | 王杰 | Hydraulic buffer |
| US20110147090A1 (en) * | 2009-12-21 | 2011-06-23 | Soilmec S.P.A. | Multi-functional machine adaptable for drilling, boring and lifting |
| CN201818706U (en) * | 2010-09-14 | 2011-05-04 | 大连理工大学 | A vibration damping device for a main machine of a dynamic tamping machine |
| CN202089711U (en) * | 2011-06-15 | 2011-12-28 | 长沙中联重工科技发展股份有限公司 | Back-inclination preventing buffer device for arm support |
| CN202148156U (en) * | 2011-07-28 | 2012-02-22 | 长沙中联重工科技发展股份有限公司 | Hydraulic spring type rear tipping prevention device of luffing tower crane |
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| CN102635106A (en) | 2012-08-15 |
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