CN102285601A - Rotary buffer with limit switch for platform crane - Google Patents
Rotary buffer with limit switch for platform crane Download PDFInfo
- Publication number
- CN102285601A CN102285601A CN2011102237395A CN201110223739A CN102285601A CN 102285601 A CN102285601 A CN 102285601A CN 2011102237395 A CN2011102237395 A CN 2011102237395A CN 201110223739 A CN201110223739 A CN 201110223739A CN 102285601 A CN102285601 A CN 102285601A
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- energy disperser
- buffer
- limit switch
- push rod
- hinged
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Abstract
The invention discloses a rotary buffer with a limit switch for a platform crane. The rotary buffer comprises an assembly lug plate 1 and an assembly lug plate 2 which are arranged on a gantry, wherein a limiting plate is arranged on the lower edge of the assembly lug plate 1; the limit switch is arranged in the limiting plate; the assembly lug plate 1 is hinged with the buffer; a pressure spring and a guide sleeve are arranged inside the buffer; the port of the guide sleeve of the buffer is provided with a buffer ejector rob; the outer end of the buffer ejector rob is connected with the pressure head of the buffer ejector rob; a limiting edge is formed on the lower surface of the buffer close to a pin shaft and is provided with a pressing plate; a buffer fulcrum pressing plate is arranged on an arm support corresponding to the pressure head of the buffer ejector rob; the assembly lug plate 2 is hinged with a repositor; a pressure spring 2 is arranged inside a guide sleeve 2; pressing rods are arranged at both ports of the guide sleeve 2; and the outer ends of the pressing rods are hinged with the buffer. The rotary buffer has a simple structure, and the operability, the accuracy and the safety of the rotary buffer meet technical requirements.
Description
Technical field
The invention belongs to the offshore rig technical field, relate to a kind of Platform lifting devices with rotary band limit switch energy disperser.
Background technology
The platform loop wheel machine uses span winch (or oil cylinder) luffing, when jib reaches the maximum angle of design limiting, an energy disperser is installed between jib and door frame, rotates to prevent jib excessively backward.Energy disperser commonly used is installed on the door frame and can not rotates, when jib rotates to the angle of maximum permission, behind the energy disperser push rod contact jib, push rod does not rotate along with jib, and the push rod pressure head of energy disperser can produce slippage with the jib contact point in the jib rotary course or energy disperser itself is out of shape motionless with the elimination contact point and displacement that produce.Because energy disperser can not be along with rotation, so the energy disperser push rod is bearing bigger downforce in withdrawal.Under this state, the push rod retraction moves and causes bigger wearing and tearing between push rod and the guiding, thereby damages or reduce the life-span of energy disperser, influences the function of energy disperser.In addition, limit switch is not installed in traditional energy disperser, the limit switch of Platform lifting devices itself is installed in the root of jib, and the triggering of limit switch needs an other cover mechanism, exists and adjusts difficulty, and the location is inaccurate, the problem of damaging limit switch easily by pressure.
Summary of the invention
The purpose of this invention is to provide a kind of Platform lifting devices with rotary band limit switch energy disperser, the limit switch that has solved the Platform lifting devices itself that exists in the prior art is adjusted difficulty, and the location is inaccurate, the problem of damaging limit switch easily by pressure.
The technical solution adopted in the present invention is, a kind of Platform lifting devices is with rotary band limit switch energy disperser, be included in door frame and be provided with and otic placode one be installed and otic placode two is installed,
The lower edge of described installation otic placode one is provided with positioning plate, limit switch is installed in the positioning plate, it is hinged by bearing pin and energy disperser that otic placode one is installed, energy disperser inside is provided with stage clip, orienting sleeve, the orienting sleeve port of energy disperser is equipped with the energy disperser push rod, the inner of energy disperser push rod contacts with stage clip, and the outer end of energy disperser push rod is connected with energy disperser push rod pressure head; Energy disperser is provided with position-limited edge near the lower surface of bearing pin, on this position-limited edge pressing plate is installed;
Described installation otic placode two is hinged by bearing pin two and restorer, and restorer inside is provided with stage clip two, orienting sleeve two, and orienting sleeve two ports are equipped with depression bar, and the inner of depression bar contacts with stage clip two, and the outer end of depression bar is hinged by bearing pin three and energy disperser.
Platform lifting devices of the present invention is with rotary band limit switch energy disperser, and its feature also is: described limit switch presses distance between head and the pressing plate greater than the 1mm-2mm of limit switch stroke.
The invention has the beneficial effects as follows that when energy disperser pressed down in jib 1 rotation, for relative displacement does not take place the pressure head that guarantees energy disperser, the push rod of energy disperser also bounced back when energy disperser was rotated down on jib.Because restorer is scalable rotatable again, therefore, restorer bounces back simultaneously and is rotated down when energy disperser is rotated down.When jib reached the maximum angle of setting, the position-limited edge of energy disperser had been close to positioning plate, and this moment, limit switch was triggered by pressing plate, cut off hydraulic power automatically controlled warning simultaneously.After jib returned, restorer sent back to initial position with energy disperser under the effect of spring.This is simple in structure, and operability, accuracy and safety all meet technical requirements.
Description of drawings
Fig. 1 Platform lifting devices of the present invention is with the installation site scheme drawing of rotary band limit switch energy disperser on Platform lifting devices;
Fig. 2 is structure and the principle of work scheme drawing of Platform lifting devices of the present invention with rotary band limit switch energy disperser.
Among the figure, 1. jib 2. cushions fulcrum pressing plate, 3. energy disperser push rod pressure head, 4. energy disperser push rod, 5. orienting sleeve, 6. stage clip, 7. pressing plate, 8. bearing pin, 9. position-limited edge is 10. installed otic placode one, 11. positioning plate, 12. limit switch, 13. install otic placode two, 14. bearing pins two, 15. stage clips two, 16. orienting sleeve two, 17. depression bars, 18. bearing pins three, 19. span winch, 20. door frames, 21. rotary band limit switch energy dispersers.
The specific embodiment
The present invention is described in detail below in conjunction with the drawings and specific embodiments.
Fig. 1 for Platform lifting devices of the present invention with the installation site figure of rotary band limit switch energy disperser on Platform lifting devices, the rotary band limit switch energy disperser 21 of two covers is installed on the one cover Platform lifting devices, in jib 1 and each symmetry of two limits one cover is installed near door frame 20, a limit switch that puts is wherein installed the hydraulic stop switch, on another set of electric limit switch can be installed.The jib 1 of Platform lifting devices can be along the bottom bearing pin in the pulling of span winch 19 or rotation when transferring, and span winch 19 drives jib 1 rotation by a cover assembly pulley.Door frame 20 is used to support the luffing transmission device and energy disperser is installed.
Fig. 2 is the structural representation of rotary band limit switch energy disperser 21 of the present invention, the mount pad that is included in door frame 20 is provided with to be installed otic placode 1 and otic placode 2 13 is installed, the lower edge that otic placode 1 is installed is provided with positioning plate 11, limit switch 12 is installed in the positioning plate 11, it is hinged by bearing pin 8 and energy disperser that otic placode 1 is installed, energy disperser inside is provided with stage clip 6, orienting sleeve 5, energy disperser orienting sleeve 5 ports are provided with energy disperser push rod 4, the inner of energy disperser push rod 4 contacts with stage clip 6, and the outer end of energy disperser push rod 4 is connected with energy disperser push rod pressure head 3; Energy disperser is provided with position-limited edge 9 near the lower surface of bearing pin 8, on this position-limited edge 9 pressing plate 7 is installed; Correspondence position with energy disperser push rod pressure head 3 on jib 1 is provided with buffering fulcrum pressing plate 2;
It is hinged by bearing pin 2 14 and restorer that otic placode 2 13 is installed, restorer inside is provided with stage clip 2 15, orienting sleeve 2 16, orienting sleeve 2 16 ports are provided with depression bar 17, and the inner of depression bar 17 contacts with stage clip 2 15, and the outer end of depression bar 17 is hinged by bearing pin 3 18 and energy disperser.
The distance " j " that limit switch 12 presses between head and the pressing plate 7 is determined according to the stroke of limit switch, the limit switch stroke is generally 3～6mm, " j " gets final product greater than the stroke 1-2mm of this limit switch, when the bigger stroke of needs, limit switch 12 installation sites are moved toward the direction away from bearing pin 8 just can.Because toward the c direction when rotating to end position, positioning plate 11 has limited the rotation of energy disperser at energy disperser, so limit switch 12 can not continued to press down, thereby protected limit switch 12 can not damaged by pressure.
Easy in order to describe, in the following text, will comprise that the integral body that energy disperser pressure head 3, energy disperser push rod 4, energy disperser orienting sleeve 5, stage clip 6 are formed abbreviates energy disperser as.The integral body that stage clip 2 15, orienting sleeve 2 16, depression bar 17 are formed abbreviates restorer as.
The working process of apparatus of the present invention is: when jib 1 was tightened up by span winch 19, jib 1 was along the rotation of i direction, and buffering fulcrum pressing plate 2 contacts with energy disperser pressure head 3 on the jib.Jib 1 continues rotation along the i direction, and at this moment energy disperser push rod 4 supports by energy disperser orienting sleeve 5 and moves along the g direction, and stage clip 6 provides a bearing force, and the energy disperser main body is rotated along bearing pin 8 along the c direction simultaneously.At this moment the depression bar 17 of restorer is at the support lower edge of orienting sleeve 2 16 e direction retraction, and stage clip 2 15 is compressed simultaneously, and whole restorer rotates along bearing pin 14 along a direction.When energy disperser rotates to the position of setting, be that the position-limited edge 9 of energy disperser is when being mounted positioning plate 11 on the otic placode 10 and blocking, whole energy disperser can not continue rotation, this moment, limit switch 12 was triggered, hydraulic efficiency pressure system stops to provide power, simultaneously, the electrical equipment limit switch of installing on the another set of rotary band limit switch energy disperser also is triggered, and warning is provided or stops to provide power.At this moment energy disperser push rod 4 should have the surplus of continuation along g direction retraction, stops the vibrations to produce suddenly to reduce jib 1.
When jib 1 was transferred by span winch 19, jib 1 was toward the contrarotation of i direction, and energy disperser is opposite toward the action of i direction rotation with the action and the jib 1 of restorer.After buffering fulcrum pressing plate 2 disengaged with energy disperser pressure head 3 on the jib, at this moment the stage clip 2 15 supporting restorer depression bars 17 of restorer allowed the depression bar 17 of restorer just run to the end position of e direction.The bearing force of stage clip 2 15 when this end position should be able to overcome deadweight and and other friction of energy disperser.
Claims (2)
1. a Platform lifting devices is characterized in that with rotary band limit switch energy disperser: be included in door frame (20) and be provided with otic placode one (10) and installation otic placode two (13) are installed,
The lower edge of described installation otic placode one (10) is provided with positioning plate (11), limit switch (12) is installed in the positioning plate (11), it is hinged by bearing pin (8) and energy disperser that otic placode one (10) is installed, energy disperser inside is provided with stage clip (6), orienting sleeve (5), the orienting sleeve of energy disperser (5) port is equipped with energy disperser push rod (4), the inner of energy disperser push rod (4) contacts with stage clip (6), and the outer end of energy disperser push rod (4) is connected with energy disperser push rod pressure head (3); Energy disperser is provided with position-limited edge (9) near the lower surface of bearing pin (8), and pressing plate (7) is installed on this position-limited edge (9);
Described installation otic placode two (13) is hinged by bearing pin two (14) and restorer, restorer inside is provided with stage clip two (15), orienting sleeve two (16), orienting sleeve two (16) ports are equipped with depression bar (17), the inner of depression bar (17) contacts with stage clip two (15), and the outer end of depression bar (17) is hinged by bearing pin three (18) and energy disperser.
2. Platform lifting devices according to claim 1 is characterized in that with rotary band limit switch energy disperser: described limit switch (12) presses distance between head and the pressing plate (7) greater than the 1mm-2mm of limit switch stroke.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102237395A CN102285601B (en) | 2011-08-05 | 2011-08-05 | Rotary buffer with limit switch for platform crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102237395A CN102285601B (en) | 2011-08-05 | 2011-08-05 | Rotary buffer with limit switch for platform crane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102285601A true CN102285601A (en) | 2011-12-21 |
| CN102285601B CN102285601B (en) | 2013-12-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102237395A Expired - Fee Related CN102285601B (en) | 2011-08-05 | 2011-08-05 | Rotary buffer with limit switch for platform crane |
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| Country | Link |
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| CN (1) | CN102285601B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103641004A (en) * | 2013-11-25 | 2014-03-19 | 无锡起岸重工机械有限公司 | Trussed marine platform crane variable-amplitude limiting mechanism |
| CN103641005A (en) * | 2013-11-25 | 2014-03-19 | 无锡起岸重工机械有限公司 | Steel wire rope luffing electric arm rack anti-collision device |
| CN104929582A (en) * | 2015-06-05 | 2015-09-23 | 宝鸡石油机械有限责任公司 | Hydraulic cylinder buffering device for lifting drilling machine |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL2025943B1 (en) * | 2020-06-29 | 2022-03-04 | Itrec Bv | heavy lift crane |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2297433Y (en) * | 1996-11-19 | 1998-11-18 | 田昆 | Safety limiting device for town crane |
| CN101993007A (en) * | 2009-08-15 | 2011-03-30 | 广西华力集团有限公司 | Pipe crane hoisting arm limiting device with buffer mechanism |
| CN201809097U (en) * | 2010-08-13 | 2011-04-27 | 宝鸡石油机械有限责任公司 | Control device for lower limited positions of marine platform crane |
-
2011
- 2011-08-05 CN CN2011102237395A patent/CN102285601B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2297433Y (en) * | 1996-11-19 | 1998-11-18 | 田昆 | Safety limiting device for town crane |
| CN101993007A (en) * | 2009-08-15 | 2011-03-30 | 广西华力集团有限公司 | Pipe crane hoisting arm limiting device with buffer mechanism |
| CN201809097U (en) * | 2010-08-13 | 2011-04-27 | 宝鸡石油机械有限责任公司 | Control device for lower limited positions of marine platform crane |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103641004A (en) * | 2013-11-25 | 2014-03-19 | 无锡起岸重工机械有限公司 | Trussed marine platform crane variable-amplitude limiting mechanism |
| CN103641005A (en) * | 2013-11-25 | 2014-03-19 | 无锡起岸重工机械有限公司 | Steel wire rope luffing electric arm rack anti-collision device |
| CN104929582A (en) * | 2015-06-05 | 2015-09-23 | 宝鸡石油机械有限责任公司 | Hydraulic cylinder buffering device for lifting drilling machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102285601B (en) | 2013-12-04 |
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Granted publication date: 20131204 Termination date: 20170805 |
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