CN220903192U - Frock is dismantled to bulldozer compensating beam center pin axle - Google Patents
Frock is dismantled to bulldozer compensating beam center pin axle Download PDFInfo
- Publication number
- CN220903192U CN220903192U CN202322763409.6U CN202322763409U CN220903192U CN 220903192 U CN220903192 U CN 220903192U CN 202322763409 U CN202322763409 U CN 202322763409U CN 220903192 U CN220903192 U CN 220903192U
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- bulldozer
- center pin
- balance beam
- frame
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- 239000000463 material Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 7
- 238000012423 maintenance Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 241001669679 Eleotris Species 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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- 239000003245 coal Substances 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Forklifts And Lifting Vehicles (AREA)
Abstract
The utility model discloses a tool for disassembling a center pin shaft of a balance beam of a bulldozer, which comprises a working frame, an ejector rod and a jack, wherein the working frame comprises a front clamping plate and a rear clamping plate which are relatively vertical, the front clamping plate and the rear clamping plate are detachably connected through a plurality of screw rods, and a splash-proof baffle is in sliding fit with the two screw rods; the working frame is suspended on the lifting equipment and longitudinally sleeved on the balance beam frame along the bulldozer, the front clamping plate and the rear clamping plate are separated from the front side and the rear side of the balance beam frame, two screw rods which are in sliding fit with the anti-sputtering baffle are supported on the surface of the balance beam frame, the rest screw rods are positioned below the bottom plate of the bulldozer, and the anti-sputtering baffle can horizontally slide between the front clamping plate and the balance beam frame; the front surface of the front clamping plate is fixedly provided with a bracket, the front surface of the rear clamping plate is fixedly provided with a door-shaped support frame which is used for propping against the rear side of the balance beam frame, and the ejector rod is used for being placed between the jack piston and the center pin shaft. The tool is easy and convenient to assemble and disassemble, is suitable for the disassembly of the center pin shafts of the balance beams of various bulldozers, saves time and materials, reduces the machine loss and eliminates the potential safety hazard.
Description
Technical Field
The utility model relates to the field of bulldozer balance beam maintenance, in particular to a tool for disassembling a center pin shaft of a bulldozer balance beam.
Background
The balance beam is used as a key flexible connecting piece of the chassis of the bulldozer, is a core component for the full-road working condition construction of the crawler bulldozer, adjusts the left and right traveling trolleys to adapt to construction topography, and simultaneously buffers the hard collision and rigid impact action of the severe working condition on the chassis of the equipment in the construction process, and the structure is shown in figure 1. The structure is complex, the two end holes are connected with the hinge holes of the left and right bogie frames through the pin shafts, the middle hole is installed with the balance beam frame of the main frame through the pin shafts, and the main frame rotates around the pin shafts to play the key role.
Although the sizes of the balance beam of the bulldozer and the size of the balance beam frame of the main frame are different, the whole structure and the working principle are the same. The crawler dozer all relates to the dismantlement of center pin axle when maintaining the compensating beam. The balance beam is arranged below the engine and the transfer case, the space is narrow, and the center pin shaft of the balance beam can be detached only by detaching the engine. Because the balance beam is positioned at the bottom of the frame and is corroded by accumulated water and accumulated coal for a long time, the center pin shaft is severely corroded and cannot be dismounted by manpower, a 100-ton jack is generally required to be dismounted, a traditional method is that a 100-ton hydraulic jack is placed in a vacancies vacated after the engine is dismounted, a front cross beam of the frame is used as a supporting point, a maintainer adjusts the distance between the jack and the center pin shaft by superposing sleeper and iron plate, and the center pin shaft is beaten and vibrated to loosen the center pin shaft under the condition that the center pin shaft is stressed, so that the center pin shaft is extruded. The method is time-consuming and material-consuming, the front cross beam of the frame is thinner, the deformation is easy to cause the machine damage, and most importantly, the superimposed sleeper and steel plates are easy to splash to hurt people after being stressed, so that great potential safety hazards exist.
Disclosure of utility model
Aiming at the defects and shortcomings in the prior art, the utility model provides a tool for disassembling a center pin shaft of a balance beam of a bulldozer, which aims to solve the problems that the time and the material are wasted in the process of disassembling the center pin shaft of the balance beam, the machine loss is easy to cause, and the superimposed sleeper and steel plate are easy to splash to hurt people after being stressed, so that a large potential safety hazard exists.
The above object of the present utility model is achieved by the following technical scheme:
The utility model provides a bull-dozer compensating beam center pin axle dismantles frock, includes operation frame, ejector pin and jack, the operation frame includes front splint and back splint, front splint and back splint are erect relatively and are set up, link to each other through many parallel lead screw dismantlement between the two, wherein two lead screws are gone up to slide the cooperation and are had a splash guard;
The working frame is configured to be hung on lifting equipment, longitudinally arranged along the bulldozer and sleeved on the balance beam frame, wherein the front clamping plate and the rear clamping plate are separated from the front side and the rear side of the balance beam frame, two screw rods which are in sliding fit with the anti-sputtering baffle are supported on the surface of the balance beam frame, the rest screw rods are positioned below the bottom plate of the bulldozer, and the anti-sputtering baffle can horizontally slide between the front clamping plate and the balance beam frame;
The rear surface of the front clamping plate is fixedly provided with a bracket for installing a jack, the front surface of the rear clamping plate is fixedly provided with a door-shaped support frame which is used for propping against the rear side of the balance beam frame, the ejector rod is used for being placed between a jack piston and a center pin shaft, the projection of the ejector rod is positioned in the circumference of the section of the center pin shaft, and the projection of the center pin shaft is positioned in the inner frame of the door-shaped support frame.
Preferably, the front clamping plate and the rear clamping plate are isosceles triangle steel plates with the same size, the bottom edges of the front clamping plate and the rear clamping plate are all upward, and the number of the screw rods is three.
Preferably, the three screw rods have the same size, round holes are formed at the top angles of the front clamping plate and the rear clamping plate, and the two ends of each screw rod are matched with the corresponding round holes on the front clamping plate and the rear clamping plate in a penetrating manner and are fixed through two adjusting nuts respectively.
Preferably, the anti-sputtering baffle comprises a rectangular steel plate which is horizontally arranged, round sliding sleeves matched with corresponding screw rods are respectively fixed along two short sides of the rectangular steel plate, and handles are fixed on the upper surface of the rectangular steel plate.
Preferably, the bracket is an angle iron welded and fixed on the rear surface of the front clamping plate, and a supporting plate is arranged between the angle iron and the bottom plate of the bulldozer.
Preferably, the door type support frame is rectangular in door frame shape, is welded and fixed on the front surface of the rear clamping plate, and has a door frame depth of 150-180mm along the longitudinal direction of the bulldozer.
Preferably, the ejector rod is a round steel column, and the diameter of the ejector rod is smaller than that of the center pin shaft.
Preferably, lifting lugs are arranged on the front clamping plate and the rear clamping plate.
Preferably, each vertex angle of the front clamping plate and the rear clamping plate is rounded.
Preferably, the plurality of screw rods are trapezoidal thread buckling screw rods.
Compared with the prior art, the technical scheme of the utility model has the beneficial effects that:
In the utility model, the front/rear clamping plates are made of isosceles triangle thick steel plates and are detachably assembled with three screw rods to form a triangle upright post structure, the triangle upright post structure is sleeved on a balance beam frame and ensures stable balance through suspension, a jack is installed through a bracket on the front clamping plates, the front clamping plates are taken as lifting supporting points, a door-shaped support frame on the rear clamping plates is taken as a main stress point of the rear clamping plates and a main frame balance beam frame, and an avoidance space is provided for a central pin shaft to be pushed (incompletely ejected) by the jack; moreover, the anti-sputtering baffle is slidably arranged through the two screw rods at the bottom edge and can slide to the upper part of the ejector rod between the jack piston and the center pin shaft, so that the situation that people are injured by sputtering when the ejector rod is stressed and deflected is prevented, and the potential safety hazard is eliminated;
The tool is simple in structure, convenient to assemble and disassemble, capable of adjusting the distance between the front clamping plate and the rear clamping plate (thereby providing different jack lifting strokes), suitable for maintaining the balance beams of various bulldozers, reduced in cost for manufacturing tools with various specifications, reduced in maintenance workload, improved in maintenance efficiency and good in economic benefit.
Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model.
Drawings
FIG. 1 is a structural diagram of a balance beam;
Fig. 2 is a schematic plan view (support plate is not shown) of the bulldozer equalizer bar center pin removal tool according to the present embodiment after installation;
fig. 3 is a schematic front view of a bulldozer balance beam center pin disassembly tool according to the present embodiment after installation;
fig. 4 is a front view of the front clamping plate in this embodiment;
FIG. 5 is a side view of the front clamping plate in this embodiment;
FIG. 6 is a front view of the rear clamping plate in this embodiment;
FIG. 7 is a side view of the rear cleat in this embodiment;
FIG. 8 is a front view of the sputtering prevention baffle in this embodiment;
FIG. 9 is a top view of the splash baffle of this embodiment;
In the figure: front clamping plate 1, rear clamping plate 2, lead screw 3, anti-splash baffle 4, sliding sleeve 41, handle 42, ejector rod 5, jack 6, lifting lug 7, adjusting nut 8, bracket 9, bulldozer bottom plate 10, supporting plate 11, door type supporting frame 12, balance beam frame 13 and center pin 14.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the present patent;
for the purpose of better illustrating the embodiments, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the actual product dimensions;
it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted;
In the description of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, so to speak, the two elements are communicated internally. It will be understood by those of ordinary skill in the art that the terms described above are in the specific sense of the present utility model. The terms "upper," "lower," "left," "right," "front," "rear," and the like refer to an orientation or positional relationship based on that shown in the drawings, for convenience of description and simplicity of description, and do not necessarily indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the utility model.
The technical scheme of the utility model is further described below with reference to the accompanying drawings and examples.
As shown in fig. 2 to 9, the tool for disassembling a center pin shaft of a balance beam of a bulldozer according to the present embodiment includes: the device comprises a front clamping plate 1, a rear clamping plate 2, three screw rods 3, a splash-proof baffle 4, an ejector rod 5 and a jack 6.
Wherein, front plate 1 and back plate 2 all adopt the thick steel sheet machine-shaping that thickness is 40mm to guarantee to satisfy the intensity demand. Since the bulldozer has many structural parts around the equalizer bar, the space is narrow, and for convenience of processing, the front clamping plate 1 and the rear clamping plate 2 are processed into isosceles triangle shapes with the same size. And the vertex angles of the front clamping plate and the rear clamping plate are rounded, so that the installation and the use are convenient. Lifting lugs 7 are welded in the middle of the bottom edges of the front clamping plate 1 and the rear clamping plate 2, lifting is convenient, and in the embodiment, local materials are taken as lifting lugs by using M33 nuts. The hole with the aperture of 50mm is all vertically link up in each apex angle department of front splint and back splint, supplies lead screw 3 to wear to establish, and three lead screw sizes are the same, and length is about 1000mm, diameter 48mm, and the clearance fit at the both ends of each lead screw 3 wears to locate corresponding round hole on front splint 1 and the back splint 2 and is fixed through two adjusting nut 8 respectively, so, front splint 1 and back splint 2 can dismantle through three lead screws 3 that are parallel to each other and link to each other, and the interval between the two is adjustable. In the embodiment, the round hole and the screw rod are respectively unified in size, so that the processing is convenient; the screw rod adopts a trapezoidal thread screw rod, has strong bearing capacity and good durability, and is easy to process.
As shown in fig. 8 and 9, the anti-sputtering baffle 4 comprises a rectangular steel plate which is horizontally arranged, circular steel pipes with phi 60 are welded on the lower side of the rectangular steel plate along two short sides respectively, and the anti-sputtering baffle 4 is used as sliding sleeves 41 and is slidably mounted on two screw rods 3 connected to the top corners of the bottom edges of the front clamping plate 1 and the rear clamping plate 2 through the two sliding sleeves 41. The handle 42 is welded and fixed in the center of the upper surface of the rectangular steel plate, so that the anti-sputtering baffle can be conveniently pushed to slide and adjust the position, and in the embodiment, an M33 nut is used as a handle for local material taking.
As shown in fig. 3, 4 and 5, an angle iron with a thickness of 6mm and a thickness of 40 x 150mm is welded and fixed on the rear surface of the front clamping plate 1, and is used as a bracket 9 for mounting the jack 6, a supporting plate 11, such as a steel plate, is horizontally erected between the angle iron and the bottom plate 10 of the bulldozer, the jack 6 is placed on the supporting plate 11, and the bottom of a hydraulic cylinder of the jack is abutted against one side where the angle iron is welded and connected with the front clamping plate 1, that is, the jack 6 takes the front clamping plate 1 as a lifting supporting point.
As shown in fig. 2, 6 and 7, the front surface of the rear clamping plate 2 is welded and fixed with a door-shaped support frame 12, the door-shaped support frame can adopt a circular arc door frame or a rectangular door frame, etc., for convenience in processing, the rectangular door frame is preferred, the depth of the door-shaped support frame 12 along the longitudinal door frame of the bulldozer is 150-180mm, in this embodiment, a rectangular door-shaped support frame with the thickness of 45mm steel plate processing and forming the outer dimension of 150 x 180 x 250mm is selected, and the door-shaped support frame 12 is used for abutting against the rear side of the balance beam frame 13 and is used as a main stress point of the rear clamping plate 2 and the main frame balance beam frame 13.
During operation, the projection of the ejector rod 5 is positioned in the circumference of the cross section of the center pin shaft 14 of the bulldozer balance beam, namely, the radial dimension of the ejector rod is smaller than the diameter of the center pin shaft, and the diameter of the jack piston is larger than the diameter of the center pin shaft, so that the center pin shaft cannot be directly extruded by the jack, and the ejector rod is required to play a bridging role between the jack piston and the center pin shaft. In the embodiment, the ejector rod is a round steel column with phi 80 mm, the diameter of the round steel column is smaller than that of the central pin shaft (generally phi 90-phi 100 mm), and the requirement is met.
As shown in fig. 2 and 3, the above components are assembled and arranged longitudinally along the bulldozer to fit over the equalizer bar 13. Specifically:
Firstly, one end of two screw rods 3 is connected with round holes at two top angles of the bottom edge of a front clamping plate 1, a splash guard 4 slides into the two screw rods through two sliding sleeves 41, then the other end of the two screw rods is connected with round holes at two top angles of the bottom edge of a rear clamping plate 2, the front clamping plate 1 and the rear clamping plate 2 are arranged vertically relatively, one surface with a door-shaped supporting frame 12 and a bracket 9 is opposite, the distance between the front clamping plate and the rear clamping plate (larger than the width of the balance beam) is adjusted according to the width (along the longitudinal direction of the bulldozer) of a main frame of the bulldozer, and an adjusting nut 8 is screwed down to form a semi-closed triangular upright post structure.
Then, the semi-closed triangular column structure is lifted by a crane (a crane lifting rope is connected with lifting lugs 7 on the bottom edges of a front clamping plate and a rear clamping plate), is longitudinally placed along the bulldozer (the front clamping plate 1 is close to the front of the bulldozer, the rear clamping plate 2 is close to the rear of the bulldozer), is sleeved on a balance beam frame 13 from top to bottom, and enables the projection of a center pin 14 to be positioned in an inner frame of a door-type support frame 12 (a shaft sleeve where the center pin is positioned is opposite to the inner frame of the door-type support frame), so that the bottom edges of the front clamping plate and the rear clamping plate are upwards, the front clamping plate and the rear clamping plate are separated from the front side and the rear side of the balance beam frame 13, a sputtering prevention baffle 4 is positioned between the front clamping plate 1 and the balance beam frame 13, and then a third screw 3 is arranged below the bottom plate 10 of the bulldozer, and the two screw rods 3 are supported on the surface of the balance beam frame, and the front clamping plate and the rear clamping plate are separated from the front clamping plate and the rear clamping plate are separated from the front clamping plate and the rear clamping plate 7. In order to ensure stable balance, the tool is always suspended on a crane in the operation process (but it is understood that the tool can achieve balance when the jack jacks the jack rod).
Finally, a supporting plate 11 is erected between the bracket 9 and the bulldozer bottom plate 10, the jack 6 is placed on the supporting plate, the ejector rod 5 is placed between the jack piston and the center pin shaft 14, the jack is started, the jack is initially lifted, the ejector rod is fixed under force, in order to prevent people from being hurt by sputtering when the ejector rod is stressed and deflected, a handle 42 on the anti-sputtering baffle 4 is pushed, and the anti-sputtering baffle is driven to slide to the position above the ejector rod 5 between the jack piston and the center pin shaft so as to block the sputtered ejector rod; starting the jack again, continuing to lift the jack, enabling the center pin shaft 14 to be partially extended into the inner frame of the door-shaped support frame 12 by the ejection shaft sleeve, wherein in the embodiment, the length of the ejector rod is 110mm, the depth of the door-shaped support frame along the longitudinal door frame of the bulldozer is 150mm, enough stroke space is reserved for the jack and the ejector rod to eject a part of the center pin shaft (the maximum ejection length is understood), the tool is removed subsequently, and tools such as a hammer can be used for knocking out the center pin shaft, so that the follow-up maintenance and replacement are facilitated. The tool does not need to provide a hole for the central pin shaft to extend out in the rear clamping plate, so that the structural strength of the tool is ensured; the door type support frame with the depth of a deeper door frame is not required, the structure is compact, and the door type support frame is better suitable for a narrow space around a balance beam of a bulldozer.
When the ejector rod is placed, the center pin shaft, the ejector rod and the jack piston are coaxial as much as possible, so that the occurrence of stress deflection of the ejector rod is reduced.
In the operation process, if the lifting stroke of the jack is found to be insufficient, the adjusting nut can be unscrewed, the front clamping plate is moved towards the rear clamping plate, the distance between the front clamping plate and the rear clamping plate is reduced to be proper, and then the adjusting nut is screwed, so that the adjustment of the lifting stroke of the jack is completed.
The above description is only of the preferred embodiments of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, within the scope of the present utility model, should be covered by the protection scope of the present utility model by making equivalent substitutions or modifications according to the technical scheme and the concept of the present utility model.
Claims (10)
1. The tool for disassembling the center pin shaft of the balance beam of the bulldozer is characterized by comprising an operation frame, an ejector rod and a jack, wherein the operation frame comprises a front clamping plate and a rear clamping plate, the front clamping plate and the rear clamping plate are arranged vertically relatively, and are detachably connected through a plurality of mutually parallel screw rods, and a splash-proof baffle is in sliding fit with the two screw rods;
The working frame is configured to be hung on lifting equipment, longitudinally arranged along the bulldozer and sleeved on the balance beam frame, wherein the front clamping plate and the rear clamping plate are separated from the front side and the rear side of the balance beam frame, two screw rods which are in sliding fit with the anti-sputtering baffle are supported on the surface of the balance beam frame, the rest screw rods are positioned below the bottom plate of the bulldozer, and the anti-sputtering baffle can horizontally slide between the front clamping plate and the balance beam frame;
The rear surface of the front clamping plate is fixedly provided with a bracket for installing a jack, the front surface of the rear clamping plate is fixedly provided with a door-shaped support frame which is used for propping against the rear side of the balance beam frame, the ejector rod is used for being placed between a jack piston and a center pin shaft, the projection of the ejector rod is positioned in the circumference of the section of the center pin shaft, and the projection of the center pin shaft is positioned in the inner frame of the door-shaped support frame.
2. The tool for disassembling the center pin shaft of the balance beam of the bulldozer according to claim 1, wherein the front clamping plate and the rear clamping plate are isosceles triangle steel plates with the same size, the bottom edges of the isosceles triangle steel plates are upward, and the total number of the screw rods is three.
3. The tool for disassembling the center pin shaft of the balance beam of the bulldozer according to claim 2, wherein the three screw rods are identical in size, round holes are formed in the top corners of the front clamping plate and the rear clamping plate, and two ends of each screw rod are matched with the corresponding round holes in the front clamping plate and the rear clamping plate in a penetrating mode and are fixed through two adjusting nuts respectively.
4. The bulldozer balance beam center pin shaft disassembly tool according to claim 1, wherein the anti-sputtering baffle comprises a rectangular steel plate which is horizontally arranged, round sliding sleeves matched with corresponding screw rods are respectively fixed along two short sides of the rectangular steel plate, and handles are fixed on the upper surface of the rectangular steel plate.
5. The bulldozer equalizer bar center pin disassembly tool of claim 1, wherein the bracket is an angle iron welded to the rear surface of the front clamping plate, and a support plate is installed between the angle iron and the bulldozer bottom plate.
6. The tool for disassembling the center pin shaft of the balance beam of the bulldozer according to claim 1, wherein the door-shaped supporting frame is in a rectangular door frame shape, is fixedly welded on the front surface of the rear clamping plate, and has a door frame depth of 150-180mm along the longitudinal direction of the bulldozer.
7. The bulldozer balance beam center pin shaft disassembly tool according to claim 1, wherein the ejector rod is a round steel column, and the diameter of the ejector rod is smaller than that of the center pin shaft.
8. The bulldozer equalizer beam center pin disassembly tool of claim 1, wherein lifting lugs are mounted on both the front clamping plate and the rear clamping plate.
9. The bulldozer equalizer beam center pin disassembly tool of claim 1, wherein each vertex angle of the front clamping plate and the rear clamping plate is rounded.
10. The bulldozer balance beam center pin shaft disassembly tool according to claim 1, wherein the plurality of screw rods are trapezoidal thread buckling screw rods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322763409.6U CN220903192U (en) | 2023-10-16 | 2023-10-16 | Frock is dismantled to bulldozer compensating beam center pin axle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322763409.6U CN220903192U (en) | 2023-10-16 | 2023-10-16 | Frock is dismantled to bulldozer compensating beam center pin axle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220903192U true CN220903192U (en) | 2024-05-07 |
Family
ID=90915782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322763409.6U Active CN220903192U (en) | 2023-10-16 | 2023-10-16 | Frock is dismantled to bulldozer compensating beam center pin axle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220903192U (en) |
-
2023
- 2023-10-16 CN CN202322763409.6U patent/CN220903192U/en active Active
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