GB2349911A - Strap tensioning device - Google Patents
Strap tensioning device Download PDFInfo
- Publication number
- GB2349911A GB2349911A GB9911153A GB9911153A GB2349911A GB 2349911 A GB2349911 A GB 2349911A GB 9911153 A GB9911153 A GB 9911153A GB 9911153 A GB9911153 A GB 9911153A GB 2349911 A GB2349911 A GB 2349911A
- Authority
- GB
- United Kingdom
- Prior art keywords
- strap
- tensioning device
- bars
- worm
- strap tensioning
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
- F16L33/02—Hose-clips
- F16L33/08—Hose-clips in which a worm coacts with a part of the hose-encircling member that is toothed like a worm-wheel
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Clamps And Clips (AREA)
Abstract
A strap tensioning device has two slotted bars 5 located in a frame 1 and are turned by worm and wheel gears 2. A nut 4 is located on the end of the worm shaft and when this is rotated the slotted bars contrarotate. A strap placed around an object with the strap ends in the bar slots will tighten around the object when the nut is rotated and the strap ends are rolled up on the bars.
Description
2349911 STRAP TENSIONING DEVICE This invention relates to a device for
providing tension to both ends of a strap sinTaltaneously to clamp the strap around an object.
To clamp a strap of metal or synthetic material under tension, around an object such as a pipe, the tension is best applied to both ends of the strap simultaneously. This tension can be provided by rolling the strap around bars turned by worm and wheel gearing This patent application describes a device to do this.
The invention can be used as a pipe clamp or pulling device, According to the present invention there is provided a strap tensioning device comprising a frame holding two slotted bars of circular cross section, each bar being fitted with a gear wheel driven by a corwon worm gear such that when the worm is turned the bars contrarotate and roll up the ends of a strap whose ends are slotted into the bars. An extension of the worm shaft would be square or hexagonal in cross section and arranged so that the worm can be turned with a socket wrench. Optionally the worm shaft could be driven by an electric, hydraulic or pneumatic motor.
The strap would be made of any material which allowed the straps to be rolled around the bars such as malleable metal or synthetic material.
2 Although the invention is described for use with straps, the straps could be replaced with wire rope and the slots could be replaced with holes to take the ends of the wire.
A specific entodin-ent of the invention will now be described by way of example with reference to the accoying drawing in whichFigure 1 shows the end view of the device with the worm and wheel gears. Figure 2 shows the top view of the device and the slots in the bars. Figure 3 shows the device with a strap installed and cl around a pipe.
Referring to the drawing the device consists of a fraiw 1 with two round bars 5 located in bearings 10 in the frarre. Slots 6 are milled through the bars to allow the ends of a strap to be pushed through the bars.
A gear wheel 2 is fixed to the end of each bar and the gears mesh with a worm gear 3 the shaft of which is located in bearings in the frame. An hexagonal nut 4 is fixed to one end of the worm gear shaft so that when the nut is turned the worm rotates and the slotted bars 5 rotate in opposite directions.
When the ends of a strap are pushed through the slots 6 and the nut 4 is turned, the strap ends will roll around the bars and therefore shorten the strap, If the strap is located around an object the strap will tighten when the nut is turned and the strap ends roll around the bars.
Figure 3 shows the ccuiplete device 7 with a strap 8 fitted to the device and cl around a pipe 9.
3
Claims (4)
1 A strap tensioning device cmprising a frame holding two slotted bars, each bar being fitted with a gear wheel which is driven by a conmn worm gear'sucb that when the worm is turned the slotted bars contrarotate to roll up the ends of a strap whose ends are inserted into the slots in the bars.
2 A strap tensioning device as claimed in claim 1 wherein an extension to the worm shaft is fitted with a square or hexagonal nut.
3 A strap tensioning device as claimed in claim I wherein the -worm gear is driven by an electric, bydraulic of pneumatic motor attached to the frame.
4 A strap tensioning device as claimed in claim I wherein the slots are replaced with holes to take wire instead of straps.
A strap tensioning device substantially as described herein with reference to figures 1 to 3 of the accoupanying drawing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9911153A GB2349911A (en) | 1999-05-14 | 1999-05-14 | Strap tensioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9911153A GB2349911A (en) | 1999-05-14 | 1999-05-14 | Strap tensioning device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB9911153D0 GB9911153D0 (en) | 1999-07-14 |
| GB2349911A true GB2349911A (en) | 2000-11-15 |
Family
ID=10853416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9911153A Withdrawn GB2349911A (en) | 1999-05-14 | 1999-05-14 | Strap tensioning device |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2349911A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111578015A (en) * | 2020-04-21 | 2020-08-25 | 余姚市恒威卡箍有限公司 | Locking worm drive formula clamp |
-
1999
- 1999-05-14 GB GB9911153A patent/GB2349911A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111578015A (en) * | 2020-04-21 | 2020-08-25 | 余姚市恒威卡箍有限公司 | Locking worm drive formula clamp |
Also Published As
| Publication number | Publication date |
|---|---|
| GB9911153D0 (en) | 1999-07-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |