CN220563896U - Damping device for adjusting feeding speed - Google Patents
Damping device for adjusting feeding speed Download PDFInfo
- Publication number
- CN220563896U CN220563896U CN202322098673.2U CN202322098673U CN220563896U CN 220563896 U CN220563896 U CN 220563896U CN 202322098673 U CN202322098673 U CN 202322098673U CN 220563896 U CN220563896 U CN 220563896U
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- shaft
- rotating shaft
- working
- adjusting
- workbench
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- 238000013016 damping Methods 0.000 title claims abstract description 66
- 239000000463 material Substances 0.000 claims abstract description 37
- 230000000149 penetrating effect Effects 0.000 claims description 8
- 239000000835 fiber Substances 0.000 description 20
- 230000009286 beneficial effect Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010924 continuous production Methods 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
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Abstract
The utility model relates to a damping device for adjusting feeding speed, which comprises a rotating shaft, wherein the rotating shaft is arranged above a workbench in a rotating way, and the extending direction of the rotating shaft is vertical to the conveying direction of a workbench conveying system; the damping structure is arranged on the rotating shaft and comprises two supporting plates which are axially and axially arranged at intervals along the rotating shaft, one ends of the supporting plates are arranged on the rotating shaft, a guide shaft is fixed between one ends of the two supporting plates far away from the rotating shaft, a working shaft is rotationally arranged on the guide shaft, and a channel for materials to pass through is formed between the working shaft and the workbench conveying system; the friction assembly is arranged between the supporting plate and the end face of the working shaft, and is in friction contact with the end face of the working shaft; the limiting components are arranged at two ends of the rotating shaft and fixedly connected to the workbench; therefore, the rotation speed of the working shaft relative to the guide shaft can be adjusted by adjusting the friction force applied to the working shaft by the friction assembly, and the damping force of the working shaft to the material is adjusted.
Description
Technical Field
The utility model belongs to the technical field of mechanical structures, and particularly relates to a damping device for adjusting feeding speed.
Background
In continuous production or use of materials such as filaments, sheets, and mats, it is often necessary to transfer the materials between stations by a transfer device, but the feed rates required for the stations are different, and the feed rates of the materials need to be adjusted in real time as the materials are transferred, so that the transfer rates of the materials are matched with the feed rates required for the stations. However, in the prior art, the conveying speed of the conveying device between the stations is controlled by a driving motor under the normal condition, the speed of the conveying device for conveying the materials needs to be adjusted, the adjustment is complicated, and the conveying speed is not easy to be adjusted to be matched with the feeding speed needed by the stations.
Disclosure of Invention
In view of the above, the present utility model is directed to a damping device for adjusting a feeding speed, so as to solve the technical problem that adjusting a material conveying speed by a conveying device is complicated.
In order to achieve the above object, the present utility model provides a damping device for adjusting a feeding speed, which adopts the following technical scheme:
a damping device for adjusting a feed rate, comprising:
and (2) rotating shaft: the rotating shaft is arranged above the workbench in a rotating way, and the extending direction of the rotating shaft is perpendicular to the conveying direction of the conveying system;
damping structure: the damping structure comprises two support plates which are arranged at intervals along the axial direction of the rotating shaft, one ends of the support plates are arranged on the rotating shaft, a guide shaft is fixed between one ends of the two support plates far away from the rotating shaft, a working shaft is rotatably arranged on the guide shaft, and a channel for materials to pass through is formed between the working shaft and the workbench conveying system;
friction assembly: the friction assembly is arranged between the supporting plate and the end face of the working shaft and is in friction contact with the end face of the working shaft, so that the friction assembly can lift friction force for the working shaft to adjust the rotating speed of the working shaft;
limiting component: the limiting components are fixedly connected to the workbench to adjust the rotation angle of the rotating shaft.
The beneficial effects are that: according to the damping device for adjusting the feeding speed, disclosed by the utility model, the damping structure is arranged to enable materials to pass through a channel between the working shaft and the working table, when the materials pass through, the working shaft is driven to rotate relative to the guide shaft, and when the working shaft passively rotates, the working shaft brings corresponding resistance to the materials such as fiber filaments, fiber sheets and continuous fiber mats passing through the channel, so that the passing speed of the materials such as the fiber filaments, the fiber sheets and the continuous fiber mats from the channel is properly slowed down; the friction assembly is arranged between the supporting plate and the end face of the working shaft and in friction contact with the end face of the working shaft, so that the rotating speed of the working shaft relative to the guide shaft can be adjusted by adjusting the friction force applied by the friction assembly to the working shaft, the damping force brought by the working shaft to the material is adjusted, namely, the conveying speed of the material on the conveying device is conveniently adjusted, the conveying speed of the material is matched with the feeding speed required by the stations, and the product quality of each station is ensured.
Further, the damping structure rotates and sets up in the pivot, the one end of keeping away from the guiding axle of backup pad rotates and sets up relative pivot, is equipped with adjustment mechanism between pivot and damping structure, adjustment mechanism corresponds the setting with damping structure to thereby adjust the distance of the relative workstation of working shaft through adjustment mechanism's distance between backup pad and the workstation.
The beneficial effects are that: the distance between the supporting plate and the workbench can be adjusted by the aid of the adjusting mechanism, so that the distance between the working shaft and the workbench is adjusted, and the channel between the working shaft and the workbench can adapt to fiber felts with different thicknesses.
Further, the adjustment mechanism comprises a supporting block fixedly connected with the rotating shaft, the supporting block is provided with a step surface for propping up the lower surface of the supporting plate, and the adjustment mechanism further comprises a first spring fixed between the supporting block and the supporting plate.
The beneficial effects are that: if the rotating shaft rotates in the opposite direction of the transmission system of the workbench, the supporting block provides an upward supporting force for the supporting plate, so that the working shaft on the supporting plate is lifted upwards and is not contacted with the fiber felt; if the supporting block rotates along with the rotating shaft to the conveying direction of the conveying system of the workbench, the supporting block does not support the supporting plate under the effect that the material passing through the channel supports the working shaft, namely, the step surface of the supporting block is separated from the lower surface of the supporting plate, and the supporting plate is pulled by the spring to downwards enable the working shaft to further downwards compress the material passing through the channel, so that a larger damping force is applied to the material passing through the channel.
Friction components are respectively arranged between the two end faces of the working shaft and the corresponding supporting plates.
The beneficial effects are that: the friction components are used for respectively rubbing the two end surfaces of the working shaft, so that the stress at the two ends of the working shaft is balanced, and the friction force of the friction components on the working shaft can be increased.
Further, the guiding shaft comprises a cylindrical section in the middle and thread sections arranged at two ends of the cylindrical section, the friction assembly comprises friction wheels arranged at two sides of the running wheels and penetrating through the guiding shaft, a spring shifter in threaded fit with the thread sections, and a second spring fixed between the spring shifter and the friction wheels, and the friction wheels are in friction contact with the end faces of the running wheels.
The beneficial effects are that: the compression amount of the spring can be adjusted by adjusting the position of the spring shifter on the thread section of the guide shaft, so that the friction force of the friction wheel on the end face of the working shaft, namely the damping force of the working shaft on the material passing through the channel, is adjusted.
Further, a bearing is arranged between the working shaft and the guide shaft, the guide shaft is fixed relative to the bearing inner ring, the working shaft is fixed relative to the bearing outer ring, a clamp spring is fixedly arranged on the guide shaft in a penetrating mode, and the clamp spring is arranged on one side, facing the supporting plate, of the bearing and is matched with the bearing in a blocking mode.
The beneficial effects are that: the setting of bearing and jump ring can also guarantee that the work axle is at guiding axle axial spacing when satisfying the relative guiding axle rotation setting of work axle.
And a balance shaft is fixedly connected between the two support plates, the balance shafts are arranged between the working shaft and the rotating shaft at intervals, and the balance shafts are arranged in parallel with the guide shafts.
The beneficial effects are that: the setting of balance shaft has increased the joint strength between two backup pads.
The damping structures are distributed with a plurality of groups at intervals along the extending direction of the rotating shaft.
The beneficial effects are that: the number of the dampers can be set according to the width of the workbench, and the plurality of dampers are arranged at intervals for multi-line operation, so that the wrinkles of the dampers on the fiber sheet or the continuous fiber felt can be effectively reduced.
The surface of the working shaft is provided with a plurality of circular grooves which are concentrically arranged with the working shaft.
The beneficial effects are that: when the passing material is fiber, part of fiber can conveniently enter the groove, so that the contact area between the whole fiber and the working shaft is increased, and the damping effect on the fiber is facilitated.
The limiting assembly comprises a connecting seat fixed on the workbench, the end part of the rotating shaft penetrates through the connecting seat, a shaft sleeve is fixedly connected to the rotating shaft, jacks are uniformly distributed in the circumferential direction of the shaft sleeve, a limiting column is connected to the top of the connecting seat in a threaded manner, and the limiting column is in plug-in fit with the jacks.
The beneficial effects are that: the fiber component structure sets up comparatively simply, can conveniently realize the rotation angle regulation of pivot, and the setting of axle sleeve structure can also make things convenient for the cooperation of different jacks on the axle sleeve and spacing post to realize that pivot rotation angle's regulation is spacing when guaranteeing pivot structural strength.
Drawings
FIG. 1 is a schematic view of a damping device for adjusting a feed rate according to the present utility model;
FIG. 2 is a schematic view of another view of a damping device for adjusting feed rate of FIG. 1;
FIG. 3 is an enlarged view of a portion of one of the damping devices of FIG. 2 for adjusting the feed rate;
FIG. 4 is a schematic view of a damping structure of a damping device for adjusting a feeding speed of FIG. 1;
FIG. 5 is a cross-sectional view of the working shaft in the damping structure;
FIG. 6 is a schematic view of the guide shaft of the damping structure of FIG. 4;
FIG. 7 is a schematic view of the structure of the working shaft in the damping structure of FIG. 4;
fig. 8 is a schematic structural view of a second embodiment of a damping device for adjusting a feeding speed according to the present utility model.
Reference numerals: 1-a rotating shaft; 2-connecting seats; 3-supporting plates; 4-balancing shaft; 5-a working shaft; 6-a first spring; 7-a guide shaft; 8-a spring shifter; 9-a second spring; 10-friction wheel; 11-a bearing; 12-clamping springs; 13-circular grooves; 14-thread segments; 15-a cylindrical section; 16-shaft sleeve; 17-jacks; 18-limiting columns; 19-a cylindrical surface; 20-supporting blocks.
Detailed Description
A damping device for adjusting a feed rate according to the present utility model is described in further detail below with reference to the accompanying drawings and detailed description:
as shown in fig. 1 to 7, a damping device for adjusting a feeding speed according to the present utility model includes a rotary shaft 1 rotatably provided above a table, and an extending direction of the rotary shaft 1 is perpendicular to a conveying direction of a table conveying system. In this embodiment, the two ends of the rotating shaft 1 are provided with limiting components, and the limiting components are fixed on the workbench to adjust the rotation angle of the rotating shaft 1. Specifically, spacing subassembly is including fixing the connecting seat 2 on the workstation, and the tip of pivot 1 wears to establish in connecting seat 2, fixedly connected with axle sleeve 16 on the pivot 1, and axle sleeve 16 sets up in pivot 1 correspond the position with connecting seat 2, and axle sleeve 16 circumference equipartition has jack 17, and the top threaded connection of connecting seat 2 has spacing post 18, spacing and jack 17 grafting adaptation. The adjustment and limitation of the rotation angle of the rotating shaft 1 are realized through the plug-in adaptation of the limiting column 18 and different jacks 17 on the shaft sleeve 16.
Damping structures are arranged on the rotating shaft 1, and a plurality of groups of damping structures are distributed at intervals along the extending direction of the rotating shaft 1; in this embodiment, the damping structure is rotatably disposed relative to the rotating shaft 1. Specifically, the damping structure includes two backup pads 3 that follow pivot 1 axial interval and lay, and two backup pad 3 extending direction are all perpendicular with pivot 1 axial, and backup pad 3 one end rotates the setting relative pivot 1, is fixed with guiding axle 7 between the one end that keeps away from pivot 1 of two backup pads 3. In this embodiment, the guide shaft 7 is fixedly connected with the support plate 3 through a connecting piece, a through hole for the end part of the guide shaft 7 to pass through is formed in the support plate 3, an internal threaded hole is formed in the end face of the guide shaft 7, and the connecting piece is a nut in threaded fit with the internal threaded hole.
The guide shaft 7 is rotatably provided with a working shaft 5, a through hole is formed in the radial center position of the working shaft 5 along the axial direction, the working shaft 5 is arranged outside the guide shaft 7 in a penetrating mode, a bearing 11 is arranged between the working shaft 5 and the guide shaft 7, the guide shaft 7 is fixed relative to the inner ring of the bearing 11, the working shaft 5 is fixed relative to the outer ring of the bearing 11, a clamp spring 12 is fixedly arranged on the guide shaft 7 in a penetrating mode, and the clamp spring 12 is arranged on one side, facing the supporting plate 3, of the bearing 11 and is matched with the bearing 11 in a blocking mode. In this embodiment, a channel is formed between the working shaft 5 and the table conveyor system for the passage of material. The surface of the working shaft 5 is provided with a plurality of circular grooves 13 which are concentrically arranged with the working shaft 5, when the fiber is used as a passing material, partial fiber can conveniently enter the circular grooves 13, the circular grooves 13 limit the axial position of the fiber on the working shaft, and the fiber is prevented from shifting in the axial direction of the working shaft.
Friction components are respectively arranged between the two end faces of the working shaft 5 and the corresponding support plates 3, and are in friction contact with the end faces of the working shaft 5, so that the friction components can provide friction force for the working shaft 5, and the rotating speed of the working shaft 5 can be adjusted. In this embodiment, the guiding shaft 7 includes a cylindrical section 15 in the middle and thread sections 14 disposed at two ends of the cylindrical section 15, the friction assembly includes friction wheels 10 disposed at two sides of the running wheel and penetrating the guiding shaft 7, a spring shifter 8 adapted to the thread of the thread sections 14, and a second spring 9 fixed between the spring shifter 8 and the friction wheels 10, and the friction wheels 10 are in friction contact with the end surface of the working shaft 5. In this embodiment, the spring shifter 8 is of a connection block structure, a threaded hole adapted to the thread section 14 of the guide shaft 7 is formed in the connection block, one end of the second spring 9 is fixedly connected with the connection block, and the other end of the second spring 9 is fixedly connected with the friction wheel 10.
The amount of compression of the spring can be adjusted by adjusting the position of the spring displacer 8 on the threaded section 14 of the guide shaft 7, so that the amount of friction of the friction wheel 10 against the end face of the working shaft 5, i.e. the amount of damping force of the working shaft 5 against the material passing through the passage, is adjusted.
In order to increase the structural strength between the two support plates 3, in this embodiment, a balance shaft 4 is fixedly connected between the two support plates 3, the balance shaft 4 is disposed between the working shaft 5 and the rotating shaft 1 at intervals, and the balance shaft 4 is disposed parallel to the guiding shaft 7.
In this embodiment, an adjusting mechanism is disposed between the rotating shaft 1 and the damping structure, and the adjusting mechanism is disposed corresponding to the damping structure, so as to adjust the distance between the damping structure and the workbench by the adjusting mechanism, thereby adjusting the distance between the working shaft 5 and the workbench.
Specifically, the adjustment mechanism includes a supporting block 20 fixedly connected with the rotating shaft 1, the supporting block 20 is correspondingly arranged with one supporting plate 3 of the damping structure, the supporting block 20 is provided with a step surface for propping up the lower surface of the supporting plate 3, the adjustment mechanism further includes a first spring 6 fixed between the supporting block 20 and the supporting plate 3, and in this embodiment, the first spring 6 is arranged at one side of the supporting plate 3 facing the working shaft 5. If the rotating shaft 1 rotates in the opposite direction of the transmission system of the workbench, the supporting block 20 rotates along with the rotating shaft 1 and simultaneously provides an upward supporting force for the supporting plate 3, so that the working shaft 5 on the supporting plate 3 is lifted upwards, and the working shaft 5 is not contacted with the fiber felt; if the supporting block 20 rotates along with the rotation shaft 1 to the conveying direction of the conveying system of the workbench, at this time, under the effect that the material passing through the channel supports the working shaft 5, the supporting block 20 does not support the supporting plate 3 any more, that is, the step surface of the supporting block 20 is separated from the lower surface of the supporting plate 3, and the spring pulls the supporting plate 3 to push the working shaft 5 downwards to further compress the material passing through the channel, so as to provide a larger damping force for the material passing through the channel.
When the damping device for adjusting the feeding speed is used, the rotation angle of the rotating shaft 1 is adjusted relative to the connecting seat 2, so that the rotating shaft 1 rotates to drive the supporting block 20 fixedly connected with the rotating shaft 1 to rotate, and when the rotating shaft 1 rotates in the opposite direction of the transmission system of the workbench, the supporting block 20 provides an upward supporting force for the supporting plate 3, so that the working shaft 5 on the supporting plate 3 is lifted upwards, the distance between the working shaft 5 and the workbench is increased, and thicker materials are allowed to pass through; when the supporting block 20 rotates along with the rotation shaft 1 in the conveying direction of the conveying system of the workbench, one case is that: the rotating shaft 1 drives the supporting block 20 to rotate downwards, and the supporting plate 3 rotates downwards along with the downward rotation of the supporting block 20, so that the distance between the working shaft 5 and the working table is reduced, and thinner materials are allowed to pass through;
another case is: the rotating shaft 1 drives the supporting block 20 to rotate downwards, under the effect that the material passing through the channel supports the working shaft 5, the supporting block 20 does not support the supporting plate 3 any more, namely the step surface of the supporting block 20 is separated from the lower surface of the supporting plate 3, and the spring pulls the supporting plate 3 to downwards enable the working shaft 5 to further press the material passing through the channel downwards, so that a larger damping force is given to the material passing through the channel.
After the angle of the rotating shaft 1 is adjusted to a proper position, the limiting column 18 on the connecting seat 2 is screwed downwards, so that the limiting column 18 is in plug-in fit with the jack 17 on the shaft sleeve 16, the rotating shaft 1 is adjusted and then limited, and the rotating shaft 1 is prevented from rotating again. Then, in order to match the material conveying speed with the feeding speed required by the station, the friction assembly, specifically, the position of the spring shifter 8 in the friction assembly on the thread section 14 of the guide shaft 7 is adjusted, so as to adjust the compression amount of the spring, and adjust the friction force of the friction wheel 10 on the end face of the working shaft 5, that is, the damping force of the working shaft 5 on the material passing through the channel until the material conveying speed matches with the feeding speed required by the station.
In the above embodiment, the damping structure is rotatably disposed relative to the rotating shaft, and in other embodiments, the damping structure may be fixedly disposed relative to the rotating shaft, and at this time, the support plate in the damping structure is fixed on the rotating shaft.
In the above embodiment, the damping structures are arranged with a plurality of groups along the extending direction of the rotating shaft at intervals; in other embodiments, the damping structure is disposed in a set along the extending direction of the rotating shaft, and at this time, the width of the damping structure in the width direction of the workbench is consistent with the width of the workbench.
In the above embodiment, the surface of the working shaft is provided with a plurality of circular grooves concentric with the working shaft; in other embodiments, as shown in fig. 8, the surface of the working shaft may also be a smooth cylindrical surface 19.
In the above embodiment, friction assemblies are respectively arranged between the two end surfaces of the working shaft and the corresponding support plates; in other embodiments, each set of damping structures is provided with a set of friction assemblies.
In the above embodiment, a balance shaft is fixedly connected between the two support plates; in other embodiments, the balance shaft may not be provided.
Claims (10)
1. A damping device for adjusting a feed rate, comprising:
and (2) rotating shaft: the rotating shaft is arranged above the workbench in a rotating way, and the extending direction of the rotating shaft is perpendicular to the conveying direction of the workbench conveying system;
damping structure: the damping structure comprises two support plates which are arranged at intervals along the axial direction of the rotating shaft, one ends of the support plates are arranged on the rotating shaft, a guide shaft is fixed between one ends of the two support plates far away from the rotating shaft, a working shaft is rotatably arranged on the guide shaft, and a channel for materials to pass through is formed between the working shaft and the workbench conveying system;
friction assembly: the friction assembly is arranged between the supporting plate and the end face of the working shaft and is in friction contact with the end face of the working shaft, so that the friction assembly can lift friction force for the working shaft to adjust the rotating speed of the working shaft;
limiting component: the limiting components are fixedly connected to the workbench to adjust the rotation angle of the rotating shaft.
2. The damping device for adjusting a feeding speed according to claim 1, wherein the damping structure is rotatably disposed on a rotating shaft, one end of the support plate far away from the guide shaft is rotatably disposed relative to the rotating shaft, an adjusting mechanism is disposed between the rotating shaft and the damping structure, and the adjusting mechanism is disposed corresponding to the damping structure, so that a distance between the support plate and the workbench is adjusted by the adjusting mechanism, and a distance between the workbench and the workbench is adjusted.
3. The damping device for adjusting a feeding speed according to claim 2, wherein the adjusting mechanism comprises a supporting block fixedly connected with the rotating shaft, the supporting block is provided with a step surface for propping up the lower surface of the supporting plate, and the adjusting mechanism further comprises a first spring fixed between the supporting block and the supporting plate.
4. A damping device for adjusting a feed rate according to any one of claims 1-3, wherein friction members are provided between the two end surfaces of the working shaft and the corresponding support plates, respectively.
5. The damping device for adjusting a feeding speed according to claim 4, wherein the guide shaft comprises a cylindrical section in the middle and threaded sections arranged at two ends of the cylindrical section, the friction assembly comprises friction wheels arranged at two sides of the working wheel and penetrating through the guide shaft, a spring shifter in threaded fit with the threaded sections, and a second spring fixed between the spring shifter and the friction wheels, and the friction wheels are in frictional contact with the end faces of the working shaft.
6. The damping device for adjusting a feeding speed according to claim 5, wherein a bearing is arranged between the working shaft and the guide shaft, the guide shaft is fixed relative to the inner ring of the bearing, the working shaft is fixed relative to the outer ring of the bearing, a clamp spring is fixedly arranged on the guide shaft in a penetrating manner, and the clamp spring is arranged on one side of the bearing facing the supporting plate and is in stop fit with the bearing.
7. A damping device for adjusting a feeding speed according to any one of claims 1-3, wherein a balance shaft is fixedly connected between the two support plates, the balance shaft is arranged between the working shaft and the rotating shaft at intervals, and the balance shaft is arranged in parallel with the guide shaft.
8. A damper device for adjusting a feeding speed according to any one of claims 1 to 3, wherein the damper structure is provided with a plurality of groups arranged at intervals along the extending direction of the rotary shaft.
9. A damping device for adjusting a feed rate according to any one of claims 1-3, characterized in that the surface of the working shaft is provided with a plurality of circular grooves arranged concentrically with the working shaft.
10. A damping device for adjusting feeding speed according to any one of claims 1-3, wherein the limiting component comprises a connecting seat fixed on a workbench, the end part of the rotating shaft is arranged in the connecting seat in a penetrating way, a shaft sleeve is fixedly connected to the rotating shaft, jacks are uniformly distributed on the circumference of the shaft sleeve, a limiting column is connected to the top of the connecting seat in a threaded way, and the limiting column is in plug-in fit with the jacks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322098673.2U CN220563896U (en) | 2023-08-07 | 2023-08-07 | Damping device for adjusting feeding speed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322098673.2U CN220563896U (en) | 2023-08-07 | 2023-08-07 | Damping device for adjusting feeding speed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220563896U true CN220563896U (en) | 2024-03-08 |
Family
ID=90087498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322098673.2U Active CN220563896U (en) | 2023-08-07 | 2023-08-07 | Damping device for adjusting feeding speed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220563896U (en) |
-
2023
- 2023-08-07 CN CN202322098673.2U patent/CN220563896U/en active Active
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