CA1184776A - Device for measuring the take-up speed of the sprinkler tube of sprinkling machines - Google Patents
Device for measuring the take-up speed of the sprinkler tube of sprinkling machinesInfo
- Publication number
- CA1184776A CA1184776A CA000403696A CA403696A CA1184776A CA 1184776 A CA1184776 A CA 1184776A CA 000403696 A CA000403696 A CA 000403696A CA 403696 A CA403696 A CA 403696A CA 1184776 A CA1184776 A CA 1184776A
- Authority
- CA
- Canada
- Prior art keywords
- piston
- tube
- tachometer
- speed
- winch
- 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.)
- Expired
Links
Landscapes
- Fertilizing (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
An indexable composite cutting insert which is generally polygonal in plan view and includes spaced upper and lower surfaces is composed of n core, such as a Sic-Si composite material, with the corners along one surface of the composite cutting insert being made of d superhard material of diamond or cubic boron nitride crystals bonded to the core. The limited use of super-hard crystals in the critical areas of the cutting edges of the insert results in significant cost savings, both in manufacturing costs and costs of materials, as well as minimum warpage of the insert. In addition, improved wear resistance of the cutting edges of the insert is obtained.
An indexable composite cutting insert which is generally polygonal in plan view and includes spaced upper and lower surfaces is composed of n core, such as a Sic-Si composite material, with the corners along one surface of the composite cutting insert being made of d superhard material of diamond or cubic boron nitride crystals bonded to the core. The limited use of super-hard crystals in the critical areas of the cutting edges of the insert results in significant cost savings, both in manufacturing costs and costs of materials, as well as minimum warpage of the insert. In addition, improved wear resistance of the cutting edges of the insert is obtained.
Description
~8~
The invention relates -to a device for measuring -the take-up speed of the sprinkler -tube of a sprinkling machine whose piston mo-tor, driven by the sprinkling water, in its turn sets the -tube winch in rotation via pusher pawls. In such a sprinkling machine the flexible -tube is slowly coiled on the -tube reel dur-ing the sprinkling process, the sprinkler carriage mounted at the tube end sprinkling a strip of field of predetermined width during this take-up process. The sprinkling width of the strip is de-termined by the characteris-tic-s of the employed sector sprink-10 ler and by the water pressure available at the sprinkler nozzle;the maximum possible length of the sprinkling strip corresponds to the tube length available on the implement increased by -the throwing distance of the sprinkler.
In such implements the tube winch is driven either by means of a water turbine, which is directly supplied with the sprinkling wa-ter being used, or with the aid of a pis-ton motor using a small branched-off partial flow of the available water quantity as a drive means; this driving water does not return to the main sprinkler but is spread ou-t separately by means of a 20 minisprinkler in the immediate vicinity of -the sprinkling imple-ment.
In implements with a driving turbine it is possible l~ithout difficulty, and is customary açcording to the s-tate of the a.rt, to measure and -to visually display the take-up velocity of the sprinkling tube with the ai.d of a suitable tachometer as a direct function of the rotary speed of the tube winch. In im-plements wi-th piston-motor dri.ve, however, a velocity indication has been unknown up to now. The difficul-ty appears to reside in the fact that the piston drive in mos-t instances does not work 30 into a rotating shaft but transmits the driving force directly to the circumference of the tube winch by means of pusher pawls.
In contrast to the.turbine implement, thereEore, no rotating - 1 - ~
7~7~
-transmission part is availahle from which -the tachome-ter drive can be branched off; morever, the piston motion is no-t uniEorm bu-t intermittent.
For the user of sprinkling machines, however, the read-abili-ty of the take-up speed is of essential signif~icance since sprinkling cycles last mostly through -the night (the duration of a tube take-up amountsto about 6 to 12 hours) and the farmer must precalculate the time a-t which he has to revisit the implement after the end of the sprinkling process.
T~e conven-tional pis-ton-driven implemen-ts, accordingly, have the disadvantage of affording no speed readou-t but are ad-vantageous in that they can be operated with a reduced expenditure of energy.
The invention enhances the attractiveness of pis-ton-driven reel-type sprinkling machines and enables the direct read-ing of the take-up speed of the sprinkling -tube also with this type of implement.
According to the present invention the pis-ton of the piston motor is in driving connec-tion with the shaft of a tacho-20 meter.
In this way it is possible to convert the reciprocatingpiston motion into a rotary motion which the -tachometer directly displays as velocity, e.g. in meters per hour.
In accordance with one embocliment oE the invention, a driving cord wound a,round a drive roller for the tachometer secured to the cylinder of the piston mo-tor, engages with one end of the reciprocating piston of -the piston mo-tor and has its other end fixedly anchored by way of a restoring spring. This is par-ticularly simple and insures a dependable motion transmission 30 from the piston to the tachome-ter shaft.
According to the invention it is also desirable that speed values (m/h) are inscribed on the tachometer scale to the 7~
right and to the left oE a middle zero marking (piston position at standstill). These values can -therefore be read direc-tly on the scale of the tachome-ter~
In accordance with another embodiment oE the present invention the scale of the tachometer comprise~ concentric cir-cles for, e.g., four layers of the tube on the tube winch, along with curvilinear scale markings extending downward in the direc-tion of the tachometer center from the speed values inscribed on the largest circle, their in-tersections with the concen-tric cir-10 cles enabling the reading of the speed values corresponding tothe current position of the tube on the winch. Finally it is also possible, in accordance with the invention, -to equip the piston with a rack meshing with a pinion which is coupled di-rectly or via a transmission with the tachometer. This solu-tion of the stated problem also requires only simple means for imple-menting the measuremen-t and indication of the speed.
The invention is illustra-ted in greater de-tail in the drawing with reference to embodiments -thereof.
Fig. 1 shows in side view a piston drive for a tube 20 winch with the device according to the invention;
Fig. 2 shows a tachometer with scale markings; and Fig. 3 shows another embodiment of the inven-tion sche-matically and in side view.
~ ccordincJ to Fig. 1, there extends Erom the cylinder 1 the piston rod 2 whose reciprocating mo-tion is transmitted via a kinematic system (not shown) to the tube winch of a sprinkling machine and thereby causes the take-up of the tube in an inter-mitten-t manner~ The piston rod 2 carries a mounting 3, fixedly secured thereto, from which a driving cord 4 passes around a 30 roller 5, mounted on the cylinder 1, to a restoring spring 6 which is fixedly anchored at one end. When the piston rod 2 moves in one or the other direction according to the double-headed arrow 7, the roller 5 is also entrained synchronously withthis motion in one or the other sense of rotation. The shaft 8 of roller 5 leads directly or indirectly to a tachometer whose scale layou-t is represented in Fig. 2. At s-tandstill the pointer 9 is in its middle position. As soon as the piston rod 2 moves, the pointer 9 is deflected to the riyht or -to the lef-t and remains during the constant par-t of the piston stroke in a cons-tant de-flection position, e.g. 10' or 10"; with each maximum deflection the pointer 9 remains stationary for several seconds in its in-10 dica-tlng position so as to afforcd sufficient readability for the user.
The tachometer scale is furthermore so designed that the reading associated with the current position can also be carried out in dependence upon the current tube length ~the tube is being wound on the drum in several layers). Moreover, the scale layout takes into account the fact the the motion is inter-mittent and indicates in its reading the mean value of the moving phase and the intervening quiescent phase as required for deter-mining the time.
According to Fig. 3 the invention can also be achieved with a rack 11 which is fastened to the piston 2 and meshes wi-th a pinion 12 which is connec-ted with -the tachometer (not shown) either directly or by way oE a speed-chancJing transm:Lssion.
The invention relates -to a device for measuring -the take-up speed of the sprinkler -tube of a sprinkling machine whose piston mo-tor, driven by the sprinkling water, in its turn sets the -tube winch in rotation via pusher pawls. In such a sprinkling machine the flexible -tube is slowly coiled on the -tube reel dur-ing the sprinkling process, the sprinkler carriage mounted at the tube end sprinkling a strip of field of predetermined width during this take-up process. The sprinkling width of the strip is de-termined by the characteris-tic-s of the employed sector sprink-10 ler and by the water pressure available at the sprinkler nozzle;the maximum possible length of the sprinkling strip corresponds to the tube length available on the implement increased by -the throwing distance of the sprinkler.
In such implements the tube winch is driven either by means of a water turbine, which is directly supplied with the sprinkling wa-ter being used, or with the aid of a pis-ton motor using a small branched-off partial flow of the available water quantity as a drive means; this driving water does not return to the main sprinkler but is spread ou-t separately by means of a 20 minisprinkler in the immediate vicinity of -the sprinkling imple-ment.
In implements with a driving turbine it is possible l~ithout difficulty, and is customary açcording to the s-tate of the a.rt, to measure and -to visually display the take-up velocity of the sprinkling tube with the ai.d of a suitable tachometer as a direct function of the rotary speed of the tube winch. In im-plements wi-th piston-motor dri.ve, however, a velocity indication has been unknown up to now. The difficul-ty appears to reside in the fact that the piston drive in mos-t instances does not work 30 into a rotating shaft but transmits the driving force directly to the circumference of the tube winch by means of pusher pawls.
In contrast to the.turbine implement, thereEore, no rotating - 1 - ~
7~7~
-transmission part is availahle from which -the tachome-ter drive can be branched off; morever, the piston motion is no-t uniEorm bu-t intermittent.
For the user of sprinkling machines, however, the read-abili-ty of the take-up speed is of essential signif~icance since sprinkling cycles last mostly through -the night (the duration of a tube take-up amountsto about 6 to 12 hours) and the farmer must precalculate the time a-t which he has to revisit the implement after the end of the sprinkling process.
T~e conven-tional pis-ton-driven implemen-ts, accordingly, have the disadvantage of affording no speed readou-t but are ad-vantageous in that they can be operated with a reduced expenditure of energy.
The invention enhances the attractiveness of pis-ton-driven reel-type sprinkling machines and enables the direct read-ing of the take-up speed of the sprinkling -tube also with this type of implement.
According to the present invention the pis-ton of the piston motor is in driving connec-tion with the shaft of a tacho-20 meter.
In this way it is possible to convert the reciprocatingpiston motion into a rotary motion which the -tachometer directly displays as velocity, e.g. in meters per hour.
In accordance with one embocliment oE the invention, a driving cord wound a,round a drive roller for the tachometer secured to the cylinder of the piston mo-tor, engages with one end of the reciprocating piston of -the piston mo-tor and has its other end fixedly anchored by way of a restoring spring. This is par-ticularly simple and insures a dependable motion transmission 30 from the piston to the tachome-ter shaft.
According to the invention it is also desirable that speed values (m/h) are inscribed on the tachometer scale to the 7~
right and to the left oE a middle zero marking (piston position at standstill). These values can -therefore be read direc-tly on the scale of the tachome-ter~
In accordance with another embodiment oE the present invention the scale of the tachometer comprise~ concentric cir-cles for, e.g., four layers of the tube on the tube winch, along with curvilinear scale markings extending downward in the direc-tion of the tachometer center from the speed values inscribed on the largest circle, their in-tersections with the concen-tric cir-10 cles enabling the reading of the speed values corresponding tothe current position of the tube on the winch. Finally it is also possible, in accordance with the invention, -to equip the piston with a rack meshing with a pinion which is coupled di-rectly or via a transmission with the tachometer. This solu-tion of the stated problem also requires only simple means for imple-menting the measuremen-t and indication of the speed.
The invention is illustra-ted in greater de-tail in the drawing with reference to embodiments -thereof.
Fig. 1 shows in side view a piston drive for a tube 20 winch with the device according to the invention;
Fig. 2 shows a tachometer with scale markings; and Fig. 3 shows another embodiment of the inven-tion sche-matically and in side view.
~ ccordincJ to Fig. 1, there extends Erom the cylinder 1 the piston rod 2 whose reciprocating mo-tion is transmitted via a kinematic system (not shown) to the tube winch of a sprinkling machine and thereby causes the take-up of the tube in an inter-mitten-t manner~ The piston rod 2 carries a mounting 3, fixedly secured thereto, from which a driving cord 4 passes around a 30 roller 5, mounted on the cylinder 1, to a restoring spring 6 which is fixedly anchored at one end. When the piston rod 2 moves in one or the other direction according to the double-headed arrow 7, the roller 5 is also entrained synchronously withthis motion in one or the other sense of rotation. The shaft 8 of roller 5 leads directly or indirectly to a tachometer whose scale layou-t is represented in Fig. 2. At s-tandstill the pointer 9 is in its middle position. As soon as the piston rod 2 moves, the pointer 9 is deflected to the riyht or -to the lef-t and remains during the constant par-t of the piston stroke in a cons-tant de-flection position, e.g. 10' or 10"; with each maximum deflection the pointer 9 remains stationary for several seconds in its in-10 dica-tlng position so as to afforcd sufficient readability for the user.
The tachometer scale is furthermore so designed that the reading associated with the current position can also be carried out in dependence upon the current tube length ~the tube is being wound on the drum in several layers). Moreover, the scale layout takes into account the fact the the motion is inter-mittent and indicates in its reading the mean value of the moving phase and the intervening quiescent phase as required for deter-mining the time.
According to Fig. 3 the invention can also be achieved with a rack 11 which is fastened to the piston 2 and meshes wi-th a pinion 12 which is connec-ted with -the tachometer (not shown) either directly or by way oE a speed-chancJing transm:Lssion.
Claims (5)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A device for measuring the take-up speed of a sprink-ler tube of a sprinkling machine having a piston motor, comprising a piston reciprocatable in a cylinder, driven by sprinkling water, which motor on reciprocation of the piston sets a tube winch into rotation by way of pusher pawls, driving means arranged to be actuated by the motion of the piston and adapted to drive the shaft of a tachometer.
2. A device according to claim 1, in which a driving cord, wound about a driving roller for the tachometer secured to the cylinder, engages with one end of the piston and has its other end fixedly anchored via a restoring spring.
3. A device according to claim 1, in which on the tachometer has a scale on which there are inscribed speed values to the right and to the left of a middle zero marking which indi-cates the stationary position of the piston.
4. A device according to claim 3, in which the tacho-meter scale comprises concentric circles for a plurality of layers of the tube on the tube winch as well as curvilinear markings extending downwardly in the direction of the tachometer center from the speed values inscribed on the largest circle, their intersections with the concentric circles enabling the reading of the speed values corresponding to the current position of the tube on the winch.
5. A device according to claim 1, in which the piston is provided with a rack meshing with a pinion which is directly coupled or coupled by way of a transmission to the shaft of the tachometer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000403696A CA1184776A (en) | 1982-05-26 | 1982-05-26 | Device for measuring the take-up speed of the sprinkler tube of sprinkling machines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000403696A CA1184776A (en) | 1982-05-26 | 1982-05-26 | Device for measuring the take-up speed of the sprinkler tube of sprinkling machines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1184776A true CA1184776A (en) | 1985-04-02 |
Family
ID=4122860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000403696A Expired CA1184776A (en) | 1982-05-26 | 1982-05-26 | Device for measuring the take-up speed of the sprinkler tube of sprinkling machines |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1184776A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105961152A (en) * | 2016-06-03 | 2016-09-28 | 江苏大学 | Reel sprinkling irrigation machine speed control system and method based on brushless direct current motor and Android APP |
-
1982
- 1982-05-26 CA CA000403696A patent/CA1184776A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105961152A (en) * | 2016-06-03 | 2016-09-28 | 江苏大学 | Reel sprinkling irrigation machine speed control system and method based on brushless direct current motor and Android APP |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEC | Expiry (correction) | ||
| MKEX | Expiry |