SE511474C2

SE511474C2 - Winding drum for hose or cable

Info

Publication number: SE511474C2
Application number: SE9800365A
Authority: SE
Inventors: Per Niclas Hedlund
Original assignee: Nederman Philip & Co Ab
Priority date: 1998-02-09
Filing date: 1998-02-09
Publication date: 1999-10-04
Also published as: SE9800365L; SE9800365D0

Abstract

The motor (7) used for rotating the drum (4) to unwind the hose or cable (5) is controlled by a system comprising a rotation detector (8), timer and motor control device. Rotation of the drum and/or motor is monitored by the sensor and the information received is used to control the timer for defining a time period. If any rotation in the unwind direction (AR) is detected during this time period, the motor control unit is used to commence rotation of the motor in the wind-up direction (UR). The motor is regulated so that rotation in the wind-up direction is not commenced if no rotation of the motor in the unwind direction is recovered over this time period.

Description

511 474 Syftet med föreliggande uppfinning är att àstadkomma en anordning som eliminerar detta problem och en sådan an- ordning uppvisar i huvudsak de kännetecken som framgår av efterföljande patentkrav 1. The object of the present invention is to provide a device which eliminates this problem and such a device has essentially the features which appear from the appended claim 1.

Genom att anordningen uppvisar ett motorstyrsystem av ifrågavarande typ elimineras behovet av den tidigare nöd- vändiga slirkopplingen.Because the device has a motor control system of the type in question, the need for the previously necessary slip clutch is eliminated.

Olika modifikationer av anordningen enligt patentkrav l framgår av de beroende patentkraven.Various modifications of the device according to claim 1 appear from the dependent claims.

Uppfinningen skall nedan förklaras närmare med hänvis- ning till bifogade ritningar, pà vilka figur l med en perspektivvy schematiskt illustrerar en upprullningsanordning med en anordning enligt uppfinningen; figur 2 schematiskt illustrerar en elektrisk krets in- gàende i anordningen enligt figur 1; och figur 3 schematiskt illustrerar en elektrisk bromsanord- ning som ingàr i anordningen enligt figur 1.The invention will be explained in more detail below with reference to the accompanying drawings, in which Figure 1 schematically illustrates with a perspective view a winding device with a device according to the invention; Figure 2 schematically illustrates an electrical circuit included in the device according to Figure 1; and Figure 3 schematically illustrates an electric braking device included in the device according to Figure 1.

Den på ritningarna illustrerade upprullningsanordningen l är monterad pà en vägg 2 eller motsvarande och uppvisar ett stativ 3 via vilket den är anbringad pà nämnda vägg 2.The winding device 1 illustrated in the drawings is mounted on a wall 2 or the like and has a stand 3 via which it is mounted on said wall 2.

En roterbar del 4 är lagrad att rotera i en avrullnings- riktning AR eller en upprullningsriktning UR. Denna roter- bara del kan vara en roterbart lagrad trumma 4 som uppvisar en upp- och avrullbar slang 5 och/eller en kabel.A rotatable part 4 is mounted to rotate in a unwinding direction AR or a winding direction UR. This rotatable part can be a rotatably mounted drum 4 which has a roll-up and unrollable hose 5 and / or a cable.

Stativet 3 uppvisar också en genomloppsdel 6 via vilken slangen 5 löper ut frán trumman 4 och pá stativet 3 är anordnad en eldriven upprullningsmotor 7. 511 474 Slangen 5 drages företrädesvis manuellt ut fràn trumman 4 i en utdragningsriktning A, varvid trumman 4 bringas rotera i avrullningsriktningen AR och den drages in i en indrag- ningsriktning B genom att upprullningsmotorn 7 roterar trumman 4 i upprullningsriktningen UR, varvid slangen 5 rullas upp pá trumman 4.The frame 3 also has a passage part 6 via which the hose 5 runs out from the drum 4 and on the frame 3 an electric winding motor 7 is arranged. The hose 5 is preferably pulled out manually from the drum 4 in a pull-out direction A, the drum 4 being caused to rotate in the unrolling direction. AR and it is pulled in a retraction direction B by the winding motor 7 rotating the drum 4 in the winding direction UR, the hose 5 being wound up on the drum 4.

Upprullningsmotorn 7 är en elmotor, företrädesvis en lik- strömsmotor, som när den drivs i avrullningsriktningen AR fungerar som generator G.The winding motor 7 is an electric motor, preferably a direct current motor, which when driven in the unwinding direction AR acts as generator G.

En rotationsdetektor 8 är anordnad att avkänna när trumman 4 och/eller upprullningsmotorn 7 börjar roteras i avrull- ningsriktningen AR, då man börjar dra ut slangen 5 i ut- dragningsriktningen A. Härvid avger rotationsdetektorn 8 via en ledning S1 en startsignal till timern 9 som aktive- ras att starta en gàngtidperiod. Dà timern 9 är aktiverad avger densamma under gángtidperioden via en ledning S2 styrsignaler till en detektor 10 och om denna detekterar fortsatt rotation av upprullningsmotorn 7 i avrullnings- riktningen AR under nämnda gángtidperiod så avger den inga styrsignaler till en motorstyranordning ll. Detek- terar detektorn 10 däremot att rotationen i avrullnings- riktningen AR upphört under nämnda gàndtidperiod avger densamma styrsignaler via en ledning S3 till motorstyr- anordningen ll som via en ledning S4 avger styrsignaler till en omkopplare 13 så att denna omställes ur ett läge Ll för bromsverkan till ett läge L2 för motordrift. Häri- genom kopplas bromsverkan av en bromsanordning 14, som har förbindelse med omkopplaren 13 via en ledning S5, ur och motorstyranordningen ll avger via en ledning S6 styr- signaler via omkopplaren 13 och en ledning S7 till upp- rullningsmotorn 7 så att dess drift startas i upprullnings- riktningen UR för att rulla upp slangen 5 på trumman 4.A rotation detector 8 is arranged to sense when the drum 4 and / or the winding motor 7 begins to rotate in the unwinding direction AR, when the hose 5 begins to be pulled out in the pulling-out direction A. In this case the rotation detector 8 emits a start signal to the timer 9 as is activated to start a running time period. When the timer 9 is activated, it emits control signals to a detector 10 via a line S2 during a running time period, and if this detects continued rotation of the winding motor 7 in the unwinding direction AR during said running time period, it emits no control signals to a motor control device 11. On the other hand, the detector 10 detects that the rotation in the unwinding direction AR ceased during said running time period emits the same control signals via a line S3 to the motor control device 11 which emits control signals via a line S4 to a switch 13 so that it is switched from a position L1 for braking action to a position L2 for motor operation. As a result, the braking action of a braking device 14, which is connected to the switch 13 via a line S5, is switched off and the motor control device 11 emits control signals via a line S6 via the switch 13 and a line S7 to the winding motor 7 so that its operation is started. in the winding direction UR to roll up the hose 5 on the drum 4.

En sensor 15, företrädesvis en strömsensor, är anordnad att avkänna om eller när ett indragningsmotstànd pà slangen 5 511474 uppnár ett visst värde, t.ex. genom att någon häller emot upprullningsmotorns 7 indragning av slangen 5 i indragnings- riktningen B eller om slangen 5 fastnar eller om ett pà slangen 5 anordnat stopporgan 16 slàr emot genomloppsdelen 6 när slangen 5 är nästan helt upprullad pà trumman 4. Sen- sorn 15 avkänner den vid nämnda indragningsmotstànd uppkom- mande ökningen av strömmen till upprullningsmotorn 7 och avger vid uppnàende av nämnda värde styrsignaler via en ledning S8 till motorstyranordningen 11 att avbryta upp- rullningsmotorns 7 drift, vilket sker genom att motorstyr- anordningen 11 ger styrsignaler härom till upprullnings- motorn 7.A sensor 15, preferably a current sensor, is arranged to sense if or when a retraction resistance on the hose 5 511474 reaches a certain value, e.g. by someone pouring against the retraction of the hose 5 of the winding motor 7 in the direction of retraction B or if the hose 5 gets stuck or if a stop means 16 arranged on the hose 5 strikes the passage part 6 when the hose 5 is almost completely wound on the drum 4. The sensor 15 senses the increase in current to the winding motor 7 which occurs at said retraction resistance and, on reaching said value, emits control signals via a line S8 to the motor control device 11 to interrupt the operation of the winding motor 7, which takes place by the motor control device 11 giving control signals to the winding motor. the engine 7.

Bromsanordningen 14 är elektrisk och avsedd att bromsa upprullningsmotorn 7 dà denna roteras i avrullningsrikt- ningen AR vid utdragning av slangen 5. Bromsanordningen 14 uppvisar en elektrisk belastningsanordning 17 som är anord- nad att mottaga och förbruka den elektriska energi som upprullningsmotorn 7 genererar dá denna arbetar som gene- rator G, varvid bromseffekten àstadkommes genom nämnda energiförbrukning.The braking device 14 is electric and is intended to brake the winding motor 7 when it is rotated in the unwinding direction AR when the hose 5 is pulled out. The braking device 14 has an electrical load device 17 which is arranged to receive and consume the electrical energy generated by the winding motor 7 when it operates. as generator G, whereby the braking effect is achieved through the said energy consumption.

Den elektriska belastningsanordningen 17 kan vara en till upprullningsmotorn 7 ansluten elektrisk krets som illust- reras i figur 3. Denna elektriska krets uppvisar en eller två dioder 18, 19, en transistor 20 och en potentiometer 21 och den fungerar sä att transistorn 20 aktiveras när den av upprullningsmotorn 7 i generatordrift alstrade elektriska energin, d.v.s. framspänningen över dioderna 18, 19, vid en viss strömstyrka uppnår eller överstiger ett förutbestämt tröskelvärde som är valt i beroende av önskad maximal rotationshastighet pà trumman 4 i avrull- ningsriktningen AR. När spänningen uppnàr eller överstiger nämnda tröskelvärde inträffar elektrisk ledning med belast- ning av upprullningsmotorn 7 och därmed bromsning av trum- man 4 som följd. 511 474 Nämnda tröskelvärde kan vara varierbart med hjälp av nämnda potentiometer 21.The electrical load device 17 may be an electrical circuit connected to the winding motor 7 as illustrated in Figure 3. This electrical circuit has one or two diodes 18, 19, a transistor 20 and a potentiometer 21 and it operates so that the transistor 20 is activated when it of the winding motor 7 in generator operation generated the electrical energy, ie the bias voltage across diodes 18, 19, at a certain current, reaches or exceeds a predetermined threshold value selected depending on the desired maximum rotational speed of the drum 4 in the unwinding direction AR. When the voltage reaches or exceeds said threshold value, electrical conduction occurs with load on the winding motor 7 and thus braking of the drum 4 as a result. 511 474 Said threshold value may be variable by means of said potentiometer 21.

Uppfinningen är inte begränsad till det ovan beskrivna och pà ritningarna illustrerade utförandet utan den kan variera inom ramen för efterföljande patentkrav. Som exem- pel pà ej närmare beskrivna utföranden kan nämnas att upp- rullaren 1 kan vara av annan typ än den visade.The invention is not limited to the embodiment described above and illustrated in the drawings, but it may vary within the scope of the appended claims. As an example of embodiments not described in more detail, it can be mentioned that the reel 1 can be of a different type than the one shown.

Upprullningsanordningen 1 kan uppvisa en annan roterbar del 4 än en trumma. Sålunda kan den roterbara delen 4 istället bestà av en arm (ej visad) som roterar i för- hållande till en icke roterbar upp- och avrullningsdel.The winding device 1 can have a rotatable part 4 other than a drum. Thus, the rotatable part 4 can instead consist of an arm (not shown) which rotates in relation to a non-rotatable winding and unrolling part.

När slangen 5 drages ut frán upprullningsanordningen 1 roteras nämnda arm i förhållande till upp- och avrull- ningsdelen. För upprullning roteras armen med hjälp av upprullningsmotorn 7 sà att slangen 5 rullas upp pà upp- och avrullningsdelen.When the hose 5 is pulled out of the winding device 1, said arm is rotated in relation to the winding and unwinding part. For winding, the arm is rotated by means of the winding motor 7 so that the hose 5 is wound up on the winding and unwinding part.

Claims

511 474 ¿Patent claim: ll II II II II II II II II II II

A winding device for hoses and / or cables, wherein the winding device (1) has a rotatably mounted part (4) which is rotatable in a unrolling direction (AR) and a winding direction (UR), the rotatable part (4) being rotatable. in the unwinding direction (AR) by pulling the hose (5) and / or the cable in a pull-out direction (A) out of the winding device (1), and wherein at least one winding motor (7) is arranged to rotate the rotatable part (4) ) in the winding direction (UR) for winding up the hose (5) and / or the cable and thereby pulling it in a retraction direction (B), characterized in that a motor control system has a rotation detector (8), a timer (9) and a motor control device (ll), 7 511 474 that the rotation detector (8) reads if the rotatable part and / or the winding motor (7) rotates in the unwinding direction (AR) and accordingly the timer (9) controls to start a running time period, that the timer ( 9) thus cooperates with r the otation detector (8), as if it detects that rotational movements in the unwinding direction (AR) cease during said running time period, the motor control device (ll) controls the winding motor (7) to start its rotation in the winding direction (UR) to roll up the hose (5) and / or the cable on the winding device (1), and that the winding motor (7) is controlled not to start its rotation in the winding direction (UR) if the rotational movements of the winding motor (7) in the unwinding direction (AR) do not cease during said running time period.

A winding device according to claim 1, characterized in that the timer (9) cooperates with a detector (10) as if it detects that rotational movements in the unwinding direction (AR) cease during said running time period, controls the motor control device (II) to control the winding motor (7) to start its rotation in the winding direction (UR) to wind up the hose (5) and / or the cable on the winding device (1) and that the detector (10) controls the winding motor (7) not to start its rotation in the winding direction (UR) if the rotational movements of the winding motor (7) in the unwinding direction (AR) do not cease during said running time period.

Rewinding device according to claim 1 or 2, characterized in that an electric braking device (14) is arranged to be activated when pulling out the hose (5) and / or the cable in the pulling direction (A) to produce a braking action against said pulling out. 511474 g

Reeling device according to claim 3, characterized in that the electric braking device (14) has an electric loading device (17) which is arranged to receive and consume the electrical energy which the reeling motor (7) generates when it operates as a generator (G). , wherein said braking effect is achieved by said energy consumption.

Winding device according to Claim 4, characterized in that the electrical load device (17) has an electrical circuit connected to the winding motor (7), which has at least one diode (18 and / or 19) and / or at least a transistor (20) arranged to consume electrical energy generated by the winding motor (7) to thereby brake the rotatable part (4).

Winding device according to Claim 5, characterized in that the diode (18 and / or 19) and / or the transistor (20) are arranged to be activated when the electrical energy generated by the winding motor (7) reaches or exceeds a predetermined threshold value which is selected depending on the desired maximum rotational speed of the rotatable part (4) in the unwinding direction (AR), in order to brake the rotatable part (4) when it has been imparted with said maximum rotational speed.

A winding device according to claim 6, characterized in that the electrical circuit has at least one potentiometer (21) to allow a change of the threshold value at which the rotatable part (4) is braked.

Winding device according to one of the preceding claims, characterized in that a sensor (15) is arranged to sense if or when a retraction resistance on the hose (5) and / or the cable reaches a certain value when the winding motor ( 7) pulls the hose (5) and / or the cable in the retraction direction (B) and that the sensor (15), when the retraction resistance reaches said value, controls the winding motor (7) to interrupt its operation to pull in the hose (5) and / or the cable in the retraction direction (B).

A winding device according to claim 8, characterized in that the sensor (15) is a current sensor.

Winding device according to one of the preceding claims, characterized in that the winding motor (7) is a direct current motor.