DE102011005988A1 - Hose - Google Patents

Abstract

The invention relates to an automatic hose reel which has a plurality of damping devices, a damping device having brake shoes which can be actuated by centrifugal force, a laterally acting piston and a link position lock. Another counter-damping device is provided with rotatable damper blocks that can rotate against the action of a torsion spring. The advantage of the new hose reel is that on the one hand it is more stable and practical, but on the other hand it is easier to use.

Description

The invention relates to an automatic hose reel, z. B. for compressed air hoses.

Conventional automatic hose reels have a quarter circle segment gear ( 41 ), which on a lower plate ( 16 ), and a small gear ( 42 ), which is mounted on a lower housing. The small gear meshes with the toothed quadrant segment. In addition, there is next to the small gear a rod ( 43 ). If the bottom plate is in a certain rotational position, the operator can pull out or retract the hose. The disadvantage of such hose reels is that the hose reel quickly rolls up the hose uncontrollably quickly. Sometimes even the operator is injured, sometimes also the pipe connection of the hose reel is destroyed. Overall, such automatic hose reels are sometimes difficult to use.

It is therefore an object of the present invention to improve a hose reel of the type mentioned so that it is on the one hand more stable, more practical and on the other hand better to use.

This object is achieved by an automatic hose reel having a plurality of damping devices, wherein a damping device by centrifugally actuated brake shoes, a laterally engaging piston and a gate position locking. And wherein there is provided a further counter-damping device consisting of a counter-damper rotary plate, rotatable damper blocks which sit on axles and can rotate against the action of a torsion spring, and further comprising a slitter with a bearing shells comprising guide frame for two rollers is, through which the hose is passed, wherein the bearings of the rollers are guided in angled grooves and wherein when removing the hose from the reel, the bearing shells in the angle grooves move so that they are far apart, while rolling the hose, the two Rollers lying close to each other next to each other.

It is particularly advantageous if the damper blocks of the counter-damper device have a position rib, a recess for a torsion spring, a small arcuate side and an opposite large arcuate side and a connection side, wherein the small arc side is shorter than the large arc side and both arc sides are formed round or involute.

According to a further development, the position rib fits in a position receiving the counter-damper rotary plate, wherein one end of the torsion spring is held in a bore of the counter-damper rotary plate, while the other end of the torsion spring engages in a bore of a damper block.

According to a development of the invention, it is further provided that the counter-damper rotating plates consist of two parallel flat plates, each flat plate having four large holes and small holes.

It is particularly favorable if the counter-damper rotary plate has four identical position receptacles.

According to one embodiment of the invention it is provided that the rollers holding bearing shells are mounted on the rear guide frame of the Reihenablegeeinrichtung, wherein the distance between the two bearing shells varies between a fixed distance and a variable distance, and wherein each bearing shell has an extension, on which one of the two Cups connecting together tension spring is attached, and wherein each bearing shell is associated with a role.

According to one embodiment of the invention, the angle groove is formed by the rear guide frame of the row depositing device and the bearings of the rollers, which are connected to one another via a tension spring, wherein both bearings occupy a remote position when the hose is pulled out of the automatic hose reel, while both bearings of the rollers lie close to each other while the hose is being retracted, with the angle between the two angle grooves being between 1 and 23 degrees.

It is also favorable that the damping device has a threaded shaft, wherein the pitch angle of the thread is greater than 23.5 degrees.

Finally, it is also advantageous if the slide positioning device has a crank, in which the one stub shaft is longer than the guide pin.

Finally, the development of the invention provides that the lower part of the housing, which has the inner and outer gate for guiding the guide pin of the crank, has beads, wherein at the bottom of the scenes inspection holes are provided.

In the following the invention will be explained in more detail with reference to drawings. Show it:

1 : Brake shoes that are connected by cushions,

2 : the damping device with housing and drive,

3 : an exploded view of the hose reel,

4 a perspective view of the damper plates of the damping device,

5 : a front view of the damper plate 4 .

6 : an interior view into the housing of the damping device with slide guides,

7 : a horizontal section through the damper plate 5 along the line AA,

8th FIG. 3 is a sectional view through one half of the main drum of the retractor, FIG.

9 FIG. 2: a perspective sectional view through the hose reel, FIG.

10 FIG. 2: a perspective view of a threaded shaft with a pitch angle greater than 23.5 degrees, FIG.

11 FIG. 4 is a perspective view of an internally threaded cam wheel with the pitch angle of the female thread greater than 23.5 degrees. FIG.

12 a perspective view of the counter-damper device,

13 : a vertical section through the counter-damper device 12 .

14 : A plan view of the counter-damper device 12 .

15 : a Druntersicht under the counter-damper device 12 .

16 : A side view of the counter-damper device 12 .

17 : A perspective view of a single damper block of the counter-damper device 12 .

18 FIG. 2 is a schematic plan view of the counter damper device with the upper damper block in the braking position, FIG.

19 : A bottom view under a damping block of the counter-damper device 12 .

20 a perspective view of the rear part of the guide frame,

21 a perspective view of the row laying device with attached guide frame

22 : a plan view of the inside of the rear guide frame,

23 FIG. 4 is a sectional view taken along line FF of FIG 22 with a plan view of the angle grooves of the guide frame,

24 : a perspective top view of the bearing shells for the shafts of the rollers,

25 a perspective view of the counter-damper plates,

26 a horizontal section along the line SS 25 through the counter-damper plate,

27 : a perspective view of a crank with a torsion spring,

28 a perspective view of the hose reel with the housing half removed,

29 : Top view of the scenes as in 6 with the guide pin of the crank in the locked position,

30 : a similar view as 29 indicating the path of the guide pin when it is freely movable,

31 : a perspective view of the quarter circle segment 41 , Gear 42 and rod 43 .

32 a perspective view of the components of the damping device with an indication of the position of the side piston,

33 : A perspective view into the housing of the damping device with inserted components.

How very good 3 it can be seen, the hose reel comprises an upper housing half 13 , a top plate 12 , a spiral spring 11 , an inner plate 5 , a large gear attached to it 4 , an upper drum half 14 , one pipe connection 15 , a lower drum half 16 , a lower case 17 , a bolt 18 and a console 19 ,

The housing of the hose reel is assembled from upper housing and lower housing. Both housing halves are using the bolt 18 with the console 19 pivotally connected. The inner structure of the hose reel is such that the lower half of the drum 16 and the inner plate 5 centered on the center hole of the housing. The inner plate 5 , the spiral spring 11 and the top plate 12 are connected with each other. The big gear 4 is on the inner plate 5 attached. Both are using the in the upper half of the case 13 taken in upper small lid 21 held. The big gear 4 is therefore rotatable with the housing 13 connected.

The spiral spring 11 is on the inner plate 5 and the upper drum half 14 attached and with the other end to the top plate 12 attached. The pipe connection 15 is on the drum half 14 assembled. The upper drum half 14 and the lower drum half 16 are connected by screws. The shaft of the lower drum half 16 is on a tubular extension of the lower half of the housing 17 stored. The drum consisting of upper and lower half 14 . 16 can thus be between the top plate 12 and turn the housing.

At the upper drum half 14 is how better off 28 it can be seen, a damping device attached, which is a small gear 9 which wears with the fixed big gear 4 on the inner plate is combing. The gear 9 drives a damper plate 6 to be more specific in the 4 and 5 is shown. This damper blade belongs to a damper device whose parts in the 1 . 4 . 5 . 6 . 7 . 29 . 30 . 32 and 33 are shown in more detail. The damping device has 4 brake shoes 1 on, which lie in pairs opposite and which by means of tension springs 2 connected to each other. The tension springs 2 engage in columns provided on the back of the blocks 1c one. The brake shoes themselves are crescent-shaped and have an outwardly curved side 1b and an inwardly curved side 1a on. The inwardly curved side has a parabolic surface, while the convex side forms an involute. The brake shoes 1 are in guides 6A the damper plate used (see. 7 ). Only the tension springs 2 cross each other. The brake shoes are in the guides 6a versatile. When the damper plate 6 about its axis, driven by the small gear 9 turns, the brake shoes 1 pushed outward due to centrifugal force. Therefore, the outwardly curved sides touch 1b the inner wall of the housing 3 , When the damper plate rotates slowly, the brake shoes kick 1 not from the guide channels 6A out. How out 33 it can be seen, the brake shoes close more or less flush with the outer periphery of the damper plate 6 from. This means that when the damper plate rotates slowly, the brake shoes are not even with the small piston 7 which is tangential to the damper plate 6 adjoins, comes in contact. Rotates the damper blade 6 on the other hand, the brake shoes exude radially from the damper plate and interlock with the small piston 7 , The drive of the damper plate 6 works in the manner of a planetary gear. Because the case 3 on the upper half 14 the hose drum is attached, this has the function of a planet carrier, while the gear 9 like a planetary gear around the fixed big gear 4 , which takes over the function of the sun gear, circles around. As a result, a relatively high transmission ratio is achieved, which is sufficient to the brake shoes 1 against the action of the spring 2 extend. Like from the 4 it can be seen, the damper plate above a square header 6b on, on which the gear 9 can be mounted.

There is still another damping device, based on the 8th to 11 is pictured. This is a threaded shaft 106 , which has at its upper end a square on which the small gear 9 is attached. The drive of this damping series device is carried out in the same manner as described above. The thread shaft 106 has a thread with a pitch angle> 23.5 degrees. The wave 106 is like the previously described damping device in a housing, in which also an internal gear 105 is mounted height-moved. The internal toothing of this wheel 105 also has a pitch angle of more than 23.5 degrees. A section through this arrangement is in 8th shown.

If now the upper half of the drum 14 around the gear 4 turns, so when, for example, the hose is unrolled, is on the small gear 9 the thread shaft 106 driven. Due to the high pitch angle between thread shaft 106 and the internal gear wheel moves up when the shaft 106 Turned clockwise while moving down when the thread shaft 106 is rotated counterclockwise. Also, this can be achieved a braking effect.

Finally, in the 12 to 19 and 26 a counter-damper device described. Like the damping devices described above, the counter-damping device has a housing in which a damper plate 23 is arranged. The counter-damper plate has four equal holes in which axes 25 for the rotatable mounting of damper blocks 24 are provided, as well as four holes 23b in which the free legs of torsion springs 26 are used.

The appearance of the individual damping blocks 24 is in 17 shown. The damping blocks have a recess 24e for receiving the torsion spring designed as a leg spring 26 on, as well as a small bow 24c , a big bow 24b and connection pages 24d , The small arch is shorter than the large arch, both arches can be round or involute. One end of the torsion spring 26 stuck in a hole 23b the damper plate, while the other end of the torsion spring on the damper block 24 is attached. As can be seen from the drawing, the damper plate exist 23 two parallel plates, each with large holes to accommodate the axles 25 and has small holes for receiving the free hands of the torsion springs (see. 25 ). On the square end of the damper plate (see. 12 ) becomes the small gear as usual 9 attached, which, as already described above with the big gear 4 combs. If the upper half drum 14 turns, the gear becomes 9 as driven in the manner described above, whereby the damper blade 6 also turns. As in 18 shown, the damper blocks can 24 around the axes 25 rotate. This results in the following operation of the counter-damper device. If the damper device is at rest, the large bends touch 24b the inside of the damper housing 3 which is in 18 only represented by an outer circumference, not. The connection side 24d between the small bow side and the large bow side lies on the inside of the hub of the damper plate. If the hose is removed from the drum, the rotates in 18 Damper plate shown to the left - there is no damping, damper blocks 24 take the position shown in the three lower damper blocks with a solid line. If the hose is pulled in by the hose reel, the damper blocks rotate 24 around its axis and take in the 18 for the upper damping block in a solid line position shown. The short sheet side 24c then touches the inside of the damper housing 3 and slows down.

Furthermore, a locking device is still provided for the damping devices. For this purpose, the damper blade 6 a peripheral hole 6c on (cf. 4 ), in which a crank with a shaft end 33 is used. This crank 10 , is in 27 shown. It has a longer and stronger shaft end 33 and a parallel offset thereto arranged guide pin 30 on. link pin 30 and shaft end 33 are by a crank arm 32 connected with each other. Around the shaft end 33 around is designed as a torsion spring torsion spring 103 assembled. This torsion spring is with one end in a radial hole 102 used while in the other hole 101 a pin is inserted. The other end of the torsion spring 103 rests on the damper plate 6 from. Like from the 6 . 29 and 30 it can be seen acts the scenery pin 30 with at the bottom of the damper housing 3 provided slotted guides together. In the 29 on the inside of the housing of the guide pin is shown schematically and with the reference numeral 30 Mistake. There are two inspection holes on the underside of the housing 3a and 3b , In 29 is shown that the scenery pin 30 located in a pocket that prevents further rotation of the damper blade. In this position, the hose reel is prevented from continuing to retract the withdrawn hose. If you pull the hose a bit further, the hose reel is rotated thereby, as well as the damper plate 6 , whereby the scenery pin 30 out of the bag 3e picks up and on with 3g in 30 designated railway device. The drum can thereby continue to roll up the hose, because the guide pin on the bag 3e and at the bead 3f passes.

Finally, the hose rewinder knows in the 20 to 24 shown, still a row laying device on. The row laying device 53 is like in 28 shown at the hose inlet of the housing. The construction is in 21 shown. On the row laying device is a rear and a front guide frame 51 . 52 intended. The rear guide frame 51 carries the two guide rollers 55 , The view in 22 shows the inside of the rear guide frame. As seen from the view along the section FF in 23 it can be seen, each cover has two mutually angularly arranged groove 51a on, the longitudinal extent to each other forms an angle a. This angle a, is greater than 1 degree and less than 23 degrees. Furthermore, it is off 23 It can be seen that the angles of the individual grooves are different. The left angle β is smaller than the angle γ of the right grooves. This causes the tube to move to the left. In the previously described grooves 51A are, as in 34 shown, bearing shells 54 led the waves of the rollers 55 take up. Every bearing shell 54 is with an extension 54a provided a hole 54c for attaching one of the two bearing shells connecting tension spring 54b having. The tension spring 54b causes the two cups to be pulled together. As a result, at rest, the two roles 55 drawn together.

If you now pull the hose out of the hose reel, a frictional force acts on the rollers. The rollers are pulled out and the distance between the two rollers increases from each other. On the other hand, if the hose is rolled up, the frictional forces acting on the rollers cause the position halves to be drawn into the angle grooves until they reach the bottom of the groove 51b touch. This also reduces the distance between the two rollers.

LIST OF REFERENCE NUMBERS

1

brake shoe

2

mainspring

3

damper housing

4

big gear

5

inner plate

6

damper plate

7

piston

8th

compression spring

9

small gear

10

crank

11

spiral spring

12

upper plate

13

upper half of the housing

14

upper drum half

15

pipe connection

16

lower drum half

17

lower half of the housing

18

bolt

19

console

20

lower housing cover

21

upper inner housing cover

22

Upper outer housing cover

23

Against rotation damper plate

24

damper block

25

axis

26

torsion coil spring

30

link pin

32

Kurbelsarm

33

stub shaft

40

interlocked quarter circle arch

42

gear

43

pole

51

rear guide frame

52

front guide frame

53

Range setting means

54

Bearing shell for roll

55

role

101

drilling

103

torsion spring

105

Wheel with internal thread

106

Shaft with external thread

Claims (10)

Automatic hose reel, characterized by a plurality of damping devices, wherein a damping device ( 1 . 2 . 3 . 6 . 7 . 10 ) by centrifugally actuated brake shoes ( 1 ), a laterally attacking piston ( 7 ) and a gate position lock ( 10 . 30 . 3e ) and wherein a further counter-damping device ( 23 . 24 . 25 . 26 . 3 ) is provided, which is a counter-damper rotary plate ( 23 ), rotatable damper blocks ( 24 ), which are based on axes ( 25 ) and against the action of a torsion spring ( 26 ), and further comprising a row laying device ( 53 ) with a bearing shells ( 54 ) comprehensive guide frame ( 51 . 53 ) for two rolls ( 53 ) is provided, through which the hose passed, wherein the bearing shells ( 54 ) of the roles ( 55 ) in angled grooves ( 51a . 51b ), and wherein, when the hose is pulled out, the bearings in the angle grooves shift in such a way that the rollers are far apart, while during rolling of the hose the rollers ( 55 ) are close to each other. Hose reel according to claim 1, characterized in that the counter-damper means a position rib ( 24a ), a recess ( 24e ) for a torsion spring ( 26 ), a small arcuate side ( 24c ), an opposite large arcuate side ( 24b ), and a connection page ( 24d ), wherein the small arc side ( 24c ) is shorter than the big sheet side ( 24b ) and both sides of the sheet ( 24b . 24c ) are round or evolvent-shaped. Schlauchauffroller according to claim 1 or 2, characterized in that the position rib ( 24a ) in a position perception ( 23a ) of the counter damper rotary plate ( 23 ) fits (cf. 26 ), wherein one side of the torsion spring ( 26 ) in a hole ( 23b ) of the counter damper rotary plate ( 23 ), while the other side of the torsion spring ( 26 ) in a recess ( 24e ) of the damper block ( 24 ) is attached. Hose reel according to one of claims 1-3, characterized in that the counter-damper rotary plates ( 23 ) of two parallel flat plates ( 23e . 23f ), each plate having four large holes ( 23c ) and small holes ( 23b ) having. Hose reel according to one of claims 1-4, characterized in that the counter-damper rotary plate ( 23 ) four identical position recordings ( 23a ) (cf. 26 ). Hose reel according to one of claims 1-5, characterized in that the bearing shells ( 54 ) of the roles ( 55 ) on a groove ( 51a ) of the rear guide frame ( 51 ) of the row laying device ( 53 ), wherein the distance between the two bearing shells ( 54 ) varies between a fixed distance and a variable distance, each bearing shell ( 54 ) an extension ( 54a ) with a hole ( 54c ), in which holes the two ends of a tension spring ( 54b ) and each bearing shell ( 54 ) a role ( 55 ) assigned. Hose reel according to one of claims 1-6, characterized in that the angle grooves ( 51a ) in the rear guide frame of the Reihenlegeeinnichtung ( 53 ) are formed, wherein the angle (a) between the two grooves is selected so that when the hose is withdrawn from the hose reel, the two bearing shells against the action of the tension springs ( 51 . 54b ) are pressed apart, while pulling the hose onto the hose drum, the bearing shells are close to each other, wherein the angle between the two angle grooves ( 51a ) is between 1 and 23 degrees. Hose reel according to one of claims 1 to 7, characterized in that the damping device is a threaded shaft ( 106 ), wherein the pitch angle of the thread is greater than 23.5 degrees. Hose reel according to one of claims 1 to 8, characterized in that the slide positioning a crank ( 10 ), which are connected to a stub shaft ( 33 ) and at the other end a guide pin ( 30 ), wherein the stub shaft ( 33 ) is longer than the guide pin ( 30 ) Hose reel according to one of claims 1 to 9, characterized in that the bottom of the damper housing ( 3 ) Scenes for the crank ( 10 ) with beads ( 3c . 3d and 3e ), wherein the housing bottom beyond inspection holes ( 3a and 3b ) having.

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