CN101545574A - Constant force self-locking device for hanger rod - Google Patents
Constant force self-locking device for hanger rod Download PDFInfo
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- CN101545574A CN101545574A CN200910083177A CN200910083177A CN101545574A CN 101545574 A CN101545574 A CN 101545574A CN 200910083177 A CN200910083177 A CN 200910083177A CN 200910083177 A CN200910083177 A CN 200910083177A CN 101545574 A CN101545574 A CN 101545574A
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- coil spring
- inner sleeve
- sleeve
- spring box
- suspension rod
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Abstract
The invention provides a constant force self-locking device for a hanger rod, which comprises an outer sleeve, an inner sleeve, a handle and a hanging interface, wherein the inner sleeve is sleeved below the outer sleeve; the front face and the back face of the lower end of the outer sleeve are fixedly provided with winding drum support plates respectively; the winding drum support plates for a left coil spring box and a right coil spring box are fixedly arranged on left and right sides of the inner sleeve and the outer sleeve respectively; the coil spring boxes are provided with volute springs inside respectively; the outsides of the coil spring boxes are wound with a wire rope; one end of the wire rope is fixed on the coil spring boxes, while the other end passes through the inner sleeve and is fixed on the top of the hanger rod; a wedge brake boot is arranged between the left coil spring box and the right coil spring box on the inner sleeve; bevels on two sides of the wedge brake boot are contacted with rims of the left coil spring box and the right coil spring box respectively; a camshaft sleeve passes through the outer sleeve, is fixed on the winding drum support plates and is provided with a cam with a shaft inside; the cam part of the cam with the shaft is matched with a special mouth on the inner sleeve; and the outer end of the shaft is connected with the handle. The device can realize the accurate positioning and self-locking positioning of the lifting of the hanger rod, easy operation and reliable work and is suitable for hanging equipment with different weights.
Description
Technical field:
The present invention relates to a kind of self-locking device of suspension rod, be applicable to that various needs hang the place of equipment vertical lift.
Background technique:
General middle-size and small-size ST Studio all needs derrick rig when hanging light fixture or miscellaneous equipment, existing flexible suspension rod or hinge type suspension rod generally adopt volute spring to produce lifting force, used volute spring must with hang weight of equipment and accurately mate, just can make the stressed state of equilibrium that is in of suspension rod, guarantee that hanging equipment is positioned desired location.But owing to need the catchweight of suspended lamp, therefore need to adjust the position of wind spring hook, to reach constant force effect, even adjusted constant force sometimes with Song Suiting, also can only guarantee in certain set fragment position effectively, light fixture can't reach the desirable settling position that stops.When middle-size and small-size ST Studio is hung light fixture or miscellaneous equipment use, because the moment of torsion of suspension rod volute spring when lifting can change, at any time might destroy the equilibrium of forces state of suspension rod, therefore traditional constant force suspension rod exists counterweight to adjust difficult, many shortcomings such as the location is inaccurate, functional reliability difference.
Summary of the invention:
For solving the problems referred to above that prior art exists, the present invention has designed a kind of constant force self-locking device of suspension rod, self-locking device is used on flexible suspension rod or the hinge type suspension rod, light commanding apparatus lifting when hanging equipment, counterweight need be do not adjusted, the purpose that stops desired location at any time and realize self-locking can be realized being positioned.
The objective of the invention is to be achieved through the following technical solutions: a kind of constant force self-locking device of suspension rod, comprise outer sleeve, inner sleeve, handle and hang interface, described inner sleeve is set in the outer sleeve below, and suspension rod is installed in the outer sleeve, hangs the lower end that interface is installed in inner sleeve; The two sides installs the roll support plate respectively before and after the described outer sleeve lower end, and the outer sleeve and the inner sleeve left and right sides are provided with square hole, and left coil spring box and right coil spring box are fixed at respectively in the and arranged on left and right sides square hole with the roll support plate; In the described left and right coil spring box volute spring is housed respectively, two outer lay winding wire ropes of coil spring boxs, wire rope one end is fixed on the coil spring box, and the other end passes inner sleeve and passes through the suspension rod internal fixation in the suspension rod top; On the described inner sleeve about be equiped with the wedge brake boots between two coil spring boxs, the inclined-plane, both sides of these wedge brake boots contacts with the wheel rim of left and right coil spring box respectively; Described inner sleeve is provided with special mouth, and a cam sleeve passes outer sleeve and roll support plate, and is fixed on the roll support plate with nut; Be provided with the tape spool cam in the described cam sleeve, the cam portion of this tape spool cam matches with special mouth on the inner sleeve, and described handle is connected in the axle outer end of tape spool cam.
Working principle of the present invention is: constant force self-locking device of the present invention is loaded on flexible suspension rod or the hinge type suspension rod, when the hanging interface and hang up equipment of inner sleeve lower end, the gravity of equipment make on the inner sleeve the wedge brake boots with about the wheel rim of two coil spring boxs closely contact, because the bevel angle of wedge brake boots is less than the self-locking critical angle, therefore form friction self-locking between coil spring box and the wedge brake boots, coil spring box can't rotate, and suspension rod is that stable position is in current location.When needs lifting suspension rod, as long as the pull operation handle, operating grip will drive cam jack-up inner sleeve, makes the wedge brake boots break away from the coil spring box wheel rim, and this moment, volute spring will drive the coil spring box rotation, and the rolling-in wire rope drives suspension rod and rises.If need fall suspension rod, only need firmly pull down operating grip, overcome the elastic force of volute spring, suspension rod is descended.When arriving desired location, the unclamp operation handle, the wedge brake boots will resume contacts with the coil spring box wheel rim, go into lock-bit.
Usefulness of the present invention is:
1. the commanding apparatus lifting is convenient and free and relaxed.
2. hanging the weight of equipment and the elastic force of volute spring does not need accurate coupling, just can proper functioning less than the lifting force of volute spring generation as long as hang the weight of equipment.
3. can realize accurate location, the lock-bit of the equipment of hanging, reliable operation can adapt to the equipment of hanging of Different Weight.
Description of drawings:
Fig. 1 is the constant force self-locking device structural representation of a kind of suspension rod of the present invention.
Fig. 2 is the external structure schematic representation of the constant force self-locking device of suspension rod of the present invention.
Fig. 3 is the side view of Fig. 2.
Fig. 4 be the A-A of Fig. 3 to sectional view, show internal structure of the present invention.
Number among the figure: 1. suspension rod; 2. outer sleeve; 3. wire rope; 4. left coil spring box; 5. hang interface; 6. handle; 7. right coil spring box; 8. roll support plate; 9. wedge brake boots; 10 volute springs; 11. inner sleeve; 12. special mouth; 13. tape spool cam; 14. cam sleeve; 15. square hole.
Embodiment:
Below in conjunction with the embodiment of Fig. 1, further specify structure of the present invention and using method to the constant force self-locking device of suspension rod of the present invention shown in Figure 4.As shown in Figure 1-Figure 3, suspension rod 1 is loaded in the outer sleeve 2, the two sides installs roll support plate 8 respectively before and after outer sleeve 2 lower ends, and the left and right sides, outer sleeve 2 lower end is provided with square hole 15, and left coil spring box 4 and right coil spring box 7 usefulness roll support plates 8 are fixed at respectively in the outer sleeve 2 and arranged on left and right sides square holes 15.As shown in Figure 4, suit inner sleeve 11 below outer sleeve 2, the relevant position of inner sleeve and outer sleeve also is provided with square hole with the left and right coil spring box of convenient installation; 10, two coil spring boxs of volute spring lay winding wire ropes 3 outward is housed respectively in the described left and right coil spring box, and wire rope 3 one ends are fixed on the coil spring box, and the other end passes inner sleeve 11 and passes through suspension rod 1 internal fixation in the suspension rod top.On the described inner sleeve 11 about be equiped with wedge brake boots 9 between two coil spring boxs, the inclined-plane, both sides of these wedge brake boots contacts with the wheel rim of left coil spring box 4 and right coil spring box 7 respectively.Described inner sleeve 11 is provided with special mouth 12, one cam sleeves 14 and passes outer sleeve 2 and roll support plate 8, and is fixed on the roll support plate 8 with nut; Be provided with tape spool cam 13 in the cam sleeve, the cam portion of this tape spool cam matches with special mouth 12 on the inner sleeve, and the axle outer end of tape spool cam is connected with handle 6.When with handling handle 6, tape spool cam 13 rotates in special mouth 12, drives inner sleeve 11 and moves up.The lower end of inner sleeve be provided with connect the equipment of hanging hang interface 5.
In the present embodiment, outer sleeve 2 and inner sleeve 11 are square tube, can all be circular pipes also.
When using this device, self-locking device is loaded on the suspension rod 1, two outer two wire rope, 3 pretensions that twine of coil spring box are fixed on suspension rod 1 top, volute spring 10 rolling-in this moment.Hang when hanging object and producing downward force when hanging interface 5 dress, inner sleeve 11 produces downward forces, drives wedge brake boots 9 and moves down, and between two coil spring boxs, produces frictional force about snapping in, and realizes self-locking thereby make suspension rod 1 stop at current location.Drive tape spool cam 13 when moving handle 6, tape spool cam 13 rotates in cam sleeve 14, and cam jack-up inner sleeve 11 makes wedge brake boots 9 break away from left and right sides coil spring box wheel rim, and volute spring 10 will drive the coil spring box rotation, and the rolling-in wire rope drives suspension rod 1 and rises.
If need fall suspension rod 1, only need firmly pull down active handle 6, overcome the elastic force of volute spring 10, suspension rod is descended.When arriving desired location, release handle 6, wedge brake boots 9 will resume contacts with the coil spring box wheel rim, go into lock-bit.
Constant force suspension rod self-locking device of the present invention can be used for flexible suspension rod and also can be used for the hinge type suspension rod, is a kind of constant force suspension rod reliable, that can stop self-locking at any time that stretches flexibly, uses.The present invention has improved and has hung the flexibility that object (as light fixture) moves aloft, can adjust easily the front and back of hanging object, up and down, move left and right.As long as light commanding apparatus lifting just can realize accurately location, lock-bit, need not adjust counterweight, reliable operation, assurance is hung equipment and is positioned desired location, can adapt to the equipment of hanging of Different Weight, is applicable to that middle-size and small-size ST Studio is hung light fixture or other hangs the equipment use.
Claims (2)
1, a kind of constant force self-locking device of suspension rod comprises outer sleeve (2), inner sleeve (11), handle (6) and hangs interface (5), it is characterized in that:
Described inner sleeve (11) is set in outer sleeve (2) below, and suspension rod (1) is installed in the outer sleeve (2), hangs the lower end that interface (5) is installed in inner sleeve (11); The two sides installs roll support plate (8) respectively before and after described outer sleeve (2) lower end, the outer sleeve (2) and inner sleeve (11) left and right sides are provided with square hole (15), and left coil spring box (4) and right coil spring box (7) are fixed at respectively in the and arranged on left and right sides square hole (15) with roll support plate (8); Volute spring (10) is housed respectively in the described left and right coil spring box, two outer lay winding wire ropes (3) of coil spring boxs, wire rope (3) one ends are fixed on the coil spring box, and the other end passes inner sleeve (11) and passes through the suspension rod internal fixation in the suspension rod top;
Described inner sleeve (11) go up about be equiped with wedge brake boots (9) between two coil spring boxs, the inclined-plane, both sides of these wedge brake boots contacts with the wheel rim of left coil spring box (4) with right coil spring box (7) respectively;
Described inner sleeve (11) is provided with special mouth (12), and a cam sleeve (14) passes outer sleeve (2) and roll support plate (8), and is fixed on the roll support plate (8) with nut; Be provided with tape spool cam (13) in the described cam sleeve, the cam portion of this tape spool cam matches with special mouth (12) on the inner sleeve, and described handle (6) is connected in the axle outer end of tape spool cam.
2, the constant force self-locking device of suspension rod according to claim 1 is characterized in that: described outer sleeve (2) and inner sleeve (11) are square tube or are circular pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100831771A CN101545574B (en) | 2009-05-06 | 2009-05-06 | Constant force self-locking device for hanger rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100831771A CN101545574B (en) | 2009-05-06 | 2009-05-06 | Constant force self-locking device for hanger rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101545574A true CN101545574A (en) | 2009-09-30 |
| CN101545574B CN101545574B (en) | 2011-02-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100831771A Active CN101545574B (en) | 2009-05-06 | 2009-05-06 | Constant force self-locking device for hanger rod |
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| Country | Link |
|---|---|
| CN (1) | CN101545574B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108105633A (en) * | 2017-12-01 | 2018-06-01 | 佛山市盛田嘉照明设备有限公司 | A kind of stretchable formula automatic spring Projecting Lamp |
| CN112196157A (en) * | 2020-09-27 | 2021-01-08 | 温州品力智能幕墙门窗有限公司 | Decoration installation assembly for building curtain wall and using method thereof |
-
2009
- 2009-05-06 CN CN2009100831771A patent/CN101545574B/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108105633A (en) * | 2017-12-01 | 2018-06-01 | 佛山市盛田嘉照明设备有限公司 | A kind of stretchable formula automatic spring Projecting Lamp |
| CN112196157A (en) * | 2020-09-27 | 2021-01-08 | 温州品力智能幕墙门窗有限公司 | Decoration installation assembly for building curtain wall and using method thereof |
| CN112196157B (en) * | 2020-09-27 | 2021-10-29 | 温州品力智能幕墙门窗有限公司 | Decoration installation assembly for building curtain wall and using method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101545574B (en) | 2011-02-16 |
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