CN101108715A - Movable cam type synthetic limiting device of carriage amplitude varying tower crane - Google Patents
Movable cam type synthetic limiting device of carriage amplitude varying tower crane Download PDFInfo
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- CN101108715A CN101108715A CNA2007100165201A CN200710016520A CN101108715A CN 101108715 A CN101108715 A CN 101108715A CN A2007100165201 A CNA2007100165201 A CN A2007100165201A CN 200710016520 A CN200710016520 A CN 200710016520A CN 101108715 A CN101108715 A CN 101108715A
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Abstract
The invention relates to a trolley travel tower crane move cam type integrated limiter, which comprises an amplitude limitator, a lifting weight limiter and a link gear. The amplitude limitator is composed of screws, nuts, travel switches I installed on both ends of the screws and a shell; the lifting weight limiter comprises a travel switch II, contact plates, a pulley, a spring and a guide rod; the link gear is composed of a wedge cam, a roller, a spring seat, a spring, a guiding sleeve, a guide rod and a guyed flexible shaft. The objective of the link gear is to adjust the travel switch II of the lifting weight limiter to make the travel switch II change the position correspondingly with the change of the operating amplitude.
Description
Technical field
The present invention relates to a kind of movable cam type synthetic limiting that is applicable to device of carriage amplitude varying tower crane, definite say so a kind of be applicable to device of carriage amplitude varying tower crane can restraining moment, the synthetic limiting of hoisting capacity and work range, belong to the lifting transportation technology.
Background technology
Safety device is as the requisite part of tower crane, and its performance is directly connected to the personal safety of hoisting crane and operating personal.Limiter of moment, load lifting limiter and work range limiting device all are the very important safety guards of tower crane.At present, they all have application on the tower machine, and its principle of work and structural shape are also varied.The tower machine all will be installed, debug each safety device in use, and it is loaded down with trivial details to work.
Summary of the invention
Purpose of the present invention is exactly to solve the tower machine to need problem that limiter of moment, load lifting limiter and work range limiting device are all installed, debugged in use, and a kind of moment restriction, hoisting capacity restriction and spacing Trinitarian movable cam type synthetic limiting that is applicable to device of carriage amplitude varying tower crane of work range of collecting is provided.
Technical solution of the present invention is:
A kind of movable cam type synthetic limiting device of carriage amplitude varying tower crane, it is by the amplitude limiting device, load lifting limiter and link gear are formed, adopt link gear that amplitude limiting device and hoisting capacity limiting device are combined, link gear is by translating cam, roller, spring perch, spring, pilot sleeve, nut and backguy flexible axle are formed, translating cam is installed in the housing, pilot sleeve is welded on the nut of amplitude limiter, on roller is bound up on the spring perch in the sleeve by bearing pin, nut and sleeve upper end are with spiral marking connection, backguy flexible axle one client link is on nut, and the other end is bound up on the bearing I of load lifting limiter.
Described amplitude limiting device is installed in the housing, is made up of screw rod, nut, contact, travel switch, and contact is bound up on the nut both sides, and with spiral marking connection, nut is along with the rotation of screw rod can be moved along screw axial between nut and the screw rod.
Described load lifting limiter bearing I, guide rod I, spring I, travel switches I I, contact II, pulley yoke, pulley, bearing II, spring II, guide rod II and nut are formed, the end of guide rod I is fixed on the bearing I, the other end connects travel switches I I, middle part mounting spring I; Contact II is bound up on pulley yoke one side of the hoist rope leading sheave of crane arm root, the opposite side of pulley yoke is welded on the bearing II, guide rod II one end is fixed on the bearing II, double-layer spring II is installed at the middle part, other end joint nut, and the bearing I of the bearing I of described load lifting limiter and link gear is same bearing.
The work range of amplitude limiting device restriction tower machine, the biggest lifting capacity of load lifting limiter restriction tower machine, cam mechanism is delivered to the hoisting capacity limiting device with range signal by the backguy flexible axle, thereby plays the restriction to hoisting moment.
Advantage of the present invention, collection limiter of moment, load lifting limiter and work range limiting device three are positioned at one, and it is convenient to install, debug, reliable operation.
Description of drawings
Fig. 1 is the movable cam type synthetic limiting device of carriage amplitude varying tower crane structural representation.
Fig. 2 is that the A of Fig. 1 is to view
1. screw rods, 2. housings, 3. travel switches I, 4. translating cams, 5. nut I, 6. contact I, 7. backguy flexible axles, 8. guide rod I, 9. bearing I, 10. spring I, 11. travel switches I I, 12. contact II, 13. pulleys, 14. hoist ropes, 15. pulley yokes, 16. bearing II, 17. spring II, 18. nut II, 19. guide rod II, 20. nuts, 21. spring III, 22. pilot sleeves, 23. spring perches, 24. bearing pins, 25. rollers among the figure.
The specific embodiment
By screw rod 1, nut I5, contact I6, amplitude limiting device and translating cam 4 that travel switches I 3 is formed are installed in the housing 2, contact I6 is bound up on nut I5 both sides, between nut I5 and the screw rod 1 with spiral marking connection, nut I5 goes up welding pilot sleeve 22, spring perch 23 is embedded in the pilot sleeve 22, and can move up and down along pilot sleeve, spring III21 is installed on the spring perch 23, roller 25 connects by bearing pin 24 and spring perch 23, and can roll along the profile of translating cam 4, the top of pilot sleeve 22 is exposed housing 2 and nut 20 is installed, and backguy flexible axle 7 one ends are installed in the tapped bore on the nut 20, and an end is installed in the tapped bore on the bearing I9, the end of guide rod I8 also is fixed on the bearing I9, the termination connects the line of backguy flexible axle 7, and the guide rod I8 other end is installed travel switches I I11, middle part mounting spring I10; Contact II12 is bound up on pulley yoke 15 1 sides of the hoist rope leading sheave of crane arm root, the opposite side of pulley yoke 15 is welded on the bearing II16, guide rod II19 one end is fixed on the bearing II16, and double-layer spring II17 is installed at the middle part, and the other end is installed nut II18.
During the work of tower machine, screw rod 1 links by drive coupling and amplitude-changing drum axle, rotates with the luffing reel, and nut I5 rotates with screw rod 1 and moves axially along screw rod 1, contact I6 by both sides touches the travel switches I 3 that two ends regulate in advance, realizes limiting the purpose of minimum and maximum functional amplitude.As nut I5 during with the variation sway of work range, roller 25 rolls and spring perch 23 is moved up and down along translating cam 4, spring perch 23 move through the position that backguy flexible axle 7 changes travel switches I I11.When tower machine hoisting heavy, pulley 13 produces displacement under the tension force effect of hoist rope 14, make pulley yoke 15 move to travel switches I I11 place, makes contact II12 touch travel switches I I11, the cut-out circuit that hoists plays the effect of restriction hoisting capacity and hoisting moment.
Claims (3)
1. movable cam type synthetic limiting device of carriage amplitude varying tower crane, it is by the amplitude limiting device, load lifting limiter and link gear are formed, it is characterized in that: adopt link gear that amplitude limiting device and hoisting capacity limiting device are combined, link gear is by translating cam, roller, spring perch, spring, pilot sleeve, nut and backguy flexible axle are formed, translating cam is installed in the housing, pilot sleeve is welded on the nut of amplitude limiter, on roller is bound up on the spring perch in the sleeve by bearing pin, nut and sleeve upper end are with spiral marking connection, backguy flexible axle one client link is on nut, and the other end is bound up on the bearing I of load lifting limiter.
2. according to claims 1 described movable cam type synthetic limiting device of carriage amplitude varying tower crane, it is characterized in that: described amplitude limiting device is installed in the housing, be made up of screw rod, nut, contact, travel switch, contact is bound up on the nut both sides, passes through spiral marking connection between nut and the screw rod.
3. according to claims 1 described movable cam type synthetic limiting device of carriage amplitude varying tower crane, it is characterized in that: described load lifting limiter bearing I, guide rod I, spring I, travel switches I I, contact II, pulley yoke, pulley, bearing II, spring II, guide rod II and nut are formed, the end of guide rod I is fixed on the bearing I, the other end connects travel switches I I, middle part mounting spring I; Contact II is bound up on pulley yoke one side of the hoist rope leading sheave of crane arm root, the opposite side of pulley yoke is welded on the bearing II, guide rod II one end is fixed on the bearing II, double-layer spring II is installed at the middle part, other end joint nut, and the bearing I of the bearing I of described load lifting limiter and link gear is same bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100165201A CN101108715A (en) | 2007-08-15 | 2007-08-15 | Movable cam type synthetic limiting device of carriage amplitude varying tower crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100165201A CN101108715A (en) | 2007-08-15 | 2007-08-15 | Movable cam type synthetic limiting device of carriage amplitude varying tower crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101108715A true CN101108715A (en) | 2008-01-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100165201A Pending CN101108715A (en) | 2007-08-15 | 2007-08-15 | Movable cam type synthetic limiting device of carriage amplitude varying tower crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101108715A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102874684A (en) * | 2012-09-12 | 2013-01-16 | 李保成 | Stroke limiter for cranes |
| CN105275030A (en) * | 2015-11-11 | 2016-01-27 | 太原重工股份有限公司 | Ejection limiting device for cargo boom of excavator |
| CN106315434A (en) * | 2016-10-15 | 2017-01-11 | 国网山东省电力公司寿光市供电公司 | Inhibiting device for tower crane |
| CN106429912A (en) * | 2016-10-15 | 2017-02-22 | 国网山东省电力公司寿光市供电公司 | Realization method of tower crane limiting device |
-
2007
- 2007-08-15 CN CNA2007100165201A patent/CN101108715A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102874684A (en) * | 2012-09-12 | 2013-01-16 | 李保成 | Stroke limiter for cranes |
| CN105275030A (en) * | 2015-11-11 | 2016-01-27 | 太原重工股份有限公司 | Ejection limiting device for cargo boom of excavator |
| CN106315434A (en) * | 2016-10-15 | 2017-01-11 | 国网山东省电力公司寿光市供电公司 | Inhibiting device for tower crane |
| CN106429912A (en) * | 2016-10-15 | 2017-02-22 | 国网山东省电力公司寿光市供电公司 | Realization method of tower crane limiting device |
| CN106315434B (en) * | 2016-10-15 | 2018-01-30 | 国网山东省电力公司寿光市供电公司 | A kind of derrick crane stopping means |
| CN106429912B (en) * | 2016-10-15 | 2018-08-14 | 国网山东省电力公司寿光市供电公司 | A kind of implementation method of derrick crane limiting device |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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