CN112482782A - Lifting type operation unloading platform for building construction periphery construction - Google Patents
Lifting type operation unloading platform for building construction periphery construction Download PDFInfo
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- CN112482782A CN112482782A CN202011205431.3A CN202011205431A CN112482782A CN 112482782 A CN112482782 A CN 112482782A CN 202011205431 A CN202011205431 A CN 202011205431A CN 112482782 A CN112482782 A CN 112482782A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/166—Landings, receiving platforms
Abstract
The invention discloses a lifting type operation unloading platform for building periphery construction, which comprises a base for bearing the whole device, wherein two sides of the base are respectively provided with a group of grooves, each group of grooves is internally provided with a group of base plates which are in sliding connection with sliding rails in the grooves through two groups of pulleys, folding supporting legs are fixedly arranged above the two groups of base plates, the construction platform is arranged above the folding supporting legs, the bottom of the construction platform corresponding to the folding supporting legs is provided with a groove, and an unloading bin is arranged in the groove in a clamping manner.
Description
Technical Field
The invention relates to the technical field of building construction equipment, in particular to a lifting type operation unloading platform for building periphery construction.
Background
Various types of construction and unloading platforms are widely used in the technical field of building construction equipment, and in the peripheral construction process of a building, workers are often required to stand on a lifting construction platform for operation, and meanwhile, the workers are required to transport materials or transport the materials to different windows.
The existing construction platform is mostly realized lifting and moving a scissor type lifting platform in a gear and rack transmission mode along a stand column attached to a building, the former is inconvenient to move and complicated and unstable to set up during material transportation, and the latter needs frequent azimuth adjustment in the construction process, so that inconvenience is brought to construction.
Patent CN208120701U discloses a high altitude construction platform with safety protection function, including the construction platform body, bottom fixed mounting has the wheel, and right side fixed mounting has controls the platform, and top fixedly connected with scissors supports the group, and the staff only need wear the safety belt, just can be many-sided protection high altitude staff's safety to reach safe convenient effect, nevertheless it has the material transportation inconvenient in the construction constitution, the low scheduling problem of efficiency of construction.
Disclosure of Invention
The invention provides a lifting type operation unloading platform for building periphery construction aiming at the existing problems.
The invention adopts the technical scheme that the lifting type operation unloading platform for the peripheral construction of the house building comprises a base for bearing the whole device, a group of grooves are respectively arranged at the left side and the right side of the base, a group of openings are respectively arranged at the front side and the rear side of the outer end of each groove, a group of slide rails are respectively arranged at the front side and the rear side of the inner end of each groove, each slide rail comprises a first slide rail positioned in the base and a second slide rail extending into the openings, the first slide rail is rotatably connected with the second slide rail,
a group of base plates which are connected with the slide rails in a sliding manner through two groups of pulleys are arranged in each group of grooves, the centers of the inner ends of the two groups of base plates are respectively provided with a rotating shaft which is vertical to the base plates, a motor for controlling the rotating shaft to rotate is arranged in the base plate at the bottom of the rotating shaft, a strip-shaped rotating shaft clamping groove is arranged in the center of the inner part of the base positioned at the groove, the inner wall of the rotating shaft clamping groove is as wide as the rotating shaft, an inlet is arranged at the inner end of the rotating shaft clamping groove, and the rotating shaft clamping groove is used,
the construction platform above the base is respectively connected with the base plate on the corresponding side through two groups of folding supporting legs at the bottom of the construction platform, the bottoms of the construction platforms corresponding to the two groups of folding supporting legs are respectively provided with a slot, a discharging bin is clamped in the slots, the interior of the construction platform between the two slots is of a hollow structure, a group of expansion plates controlled by an expansion motor are respectively arranged on two sides of the inner part of the telescopic mechanism, a plurality of fixing holes are arranged at the outer ends of the expansion plates side by side, the inner end of the bottom plate of the discharging bin is provided with a clamping groove used for being matched and clamped with the expansion plate, the top surface in the clamping groove is provided with bolts which are the same as the number of the fixing holes and can pass through the fixing holes, the bottom surface in the clamping groove is provided with fixing grooves used for being matched and clamped with the bolts, each bolt is vertically connected with a screw rod above the clamping groove in a threaded manner, and each bolt moves synchronously, the screw rod extends to the outer side of the bottom of the discharging bin, and a bulge is arranged at the bottom of the discharging bin corresponding to the bolt.
Furthermore, four groups of rollers are arranged at the bottom of the base, a group of telescopic rods perpendicular to the base plate are arranged on the front side and the rear side of the base respectively, and the two sides of each telescopic rod are connected with a hydraulic jack used for supporting the base through a group of connecting rods and used for supporting the whole device.
Furthermore, two groups of universal wheels are arranged at the bottom of the outer end of the base plate side by side and used for reducing friction force when the base plate rotates.
Furthermore, a second rotating shaft at the front end of the second sliding rail is embedded in a first rotating shaft at the tail end of the first sliding rail, and the second rotating shaft is rotatably connected with the first rotating shaft, so that the second rotating shaft drives the second sliding rail to rotate.
Further, first slide rail and second slide rail all are equipped with glide slope and glide slope, be equipped with the clamp plate that pushes down the lifting by controller control in the glide slope of second slide rail, it is used for restricting the pulley removal when pushing down, the clamp plate with the controller through the push rod that is located both sides with be located the spring coupling at middle part, the controller with motor electric connection, controller control clamp plate pushes down when the motor starts makes the pulley fixed prevent the base plate to shift when rotating.
Further, the discharge bin bottom is connected with the fixed rotation of the first connecting rod of folding landing leg top outer end, and the second connecting rod of folding landing leg top inner be used for supporting the discharge bin and with first connecting rod parallel arrangement, the third connecting rod middle part of first connecting rod below is equipped with electric liquid push rod, electric liquid push rod's output and discharge bin bottom are connected for the lifting of control discharge bin, folding landing leg bottom is equipped with and is used for controlling its flexible elevator motor for the inside material of lifting discharge bin messenger changes and pours out.
Furthermore, a footpath is arranged on the construction platform around the discharging bin, anti-skid protrusions are arranged on the footpath, and a fence is arranged on the periphery of the footpath, so that the safety of the construction platform is improved.
Furthermore, the telescopic length of the base plate does not exceed 2/3 of the total length of the base plate, and the phenomenon that the base plate is broken due to insufficient supporting force caused by too long extension length is avoided.
The invention has the beneficial effects that:
(1) the device has reasonable structure and convenient use, can construct buildings with different heights by the aid of the folding supporting legs, increases the construction range and can finish multiple times of unloading in different positions and directions during construction by the aid of the unloading bins clamped on the construction platform, so that the working efficiency is greatly improved, and the workload is relieved.
(2) According to the device, the clamping connection of the discharging bins is controlled through the bolts and the screws, the discharging bins are fixed with the construction platform through the expansion plates, one discharging bin is separated from the construction platform when the device is used, the other discharging bin is kept in clamping connection, workers can continue to construct and control the lifting of the discharging bins through the folding supporting legs, and meanwhile, the transverse expansion length and the transverse expansion angle are adjusted through the matching sliding and rotating of the base and the base plate, so that the loading and unloading of materials can be completed.
(3) The top of the folding supporting leg of the device is provided with the electro-hydraulic push rod matched with the material bin, so that the discharging bin can keep a certain angle during discharging, and the construction of workers is facilitated.
Drawings
FIG. 1 is a schematic diagram of the overall apparatus of the present invention;
FIG. 2 is a front view of the overall device of the present invention;
FIG. 3 is a schematic view of the internal structure of the susceptor and the substrate according to the present invention;
FIG. 4 is a schematic view of the slide rail structure of the present invention;
FIG. 5 is a cross-sectional view of a second slide rail of the present invention;
FIG. 6 is a cross-sectional view of the first and second shafts of the present invention;
FIG. 7 is a schematic view of a slot structure of the spindle according to the present invention;
FIG. 8 is a schematic view of the construction platform and discharge bin configuration of the present invention;
FIG. 9 is a cross-sectional view of the construction platform and discharge bin of the present invention;
FIG. 10 is a cross-sectional view of the discharge hopper of the present invention;
FIG. 11 is a schematic view of the bottom structure of the first connecting rod and the discharging bin of the present invention.
Wherein, 1-a base, 11-a groove, 12-an opening, 13-a rotating shaft clamping groove, 14-a roller, 15-a telescopic rod, 16-a hydraulic jack, 2-a base plate, 21-a pulley, 22-a rotating shaft, 23-a motor, 24-a universal wheel, 3-a folding leg, 31-a first connecting rod, 32-a second connecting rod, 33-a third connecting rod, 34-an electro-hydraulic push rod, 35-a lifting motor, 4-a construction platform, 41-a slot, 42-a footpath, 43-a telescopic motor, 44-a telescopic plate, 45-a fixed hole, 5-a discharging bin, 51-a clamping groove, 52-a bolt, 53-a fixed groove, 54-a screw rod, 6-a slide rail, 61-a first slide rail and 62-a second slide rail, 63-first rotating shaft, 64-second rotating shaft, 65-controller, 66-pressing plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention. The terms "front and back", "left and right" used in the embodiments of the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the location of the indicated technical features.
As shown in fig. 1 and 3-6, a lifting type operation unloading platform for building construction periphery construction is characterized by comprising a base 1 for bearing the whole device, wherein a group of grooves 11 are respectively arranged on the left side and the right side of the base 1, a group of openings 12 are respectively arranged on the front side and the rear side of the outer end of each groove 11, a group of slide rails 6 are respectively arranged on the front side and the rear side of the inner end of each groove 11, each slide rail 6 comprises a first slide rail 61 positioned in the base 1 and a second slide rail 62 extending into the openings 12, the first slide rail 61 is rotatably connected with the second slide rail 62, a second rotating shaft 64 at the front end of the second slide rail 62 is embedded in a first rotating shaft 63 at the tail end of the first slide rail 61, the second rotating shaft 64 is rotatably connected with the first rotating shaft 63, the first slide rail 61 and the second slide rail 62 are respectively provided with an upper slide way and a lower slide way, a pressing plate 66 which is controlled by a controller 65 to press and lift is, the controller 65 is a commercially available PLC controller, the pressing plate 66 is connected with the controller 65 through push rods positioned on two sides and a spring positioned in the middle, the controller 65 is electrically connected with the motor 23, four groups of rollers 14 are arranged at the bottom of the base 1, a group of telescopic rods 15 perpendicular to the base plate 2 are respectively arranged on the front side and the rear side of the base 1, and two sides of each telescopic rod 15 are respectively connected with the hydraulic jack 16 used for supporting the base 1 through a group of connecting rods.
As shown in fig. 1, 3 and 7, a group of substrates 2 slidably connected to the slide rail 6 through two groups of pulleys 21 are disposed in each group of grooves 11, a rotating shaft 22 perpendicular to the substrates 2 is disposed at the center of the inner ends of the two groups of substrates 2, a motor 23 for controlling the rotation of the rotating shaft 22 is disposed inside the substrate 2 at the bottom of the rotating shaft 22, the motor 23 is a commercial TZL50-2.2Kw horizontal gear reduction motor, a strip-shaped rotating shaft slot 13 is disposed at the center inside the base 1 at the groove 11, the inner wall of the rotating shaft slot 13 has the same width as the rotating shaft 22, and an inlet is disposed at the inner end thereof for being engaged with the rotating shaft 22 when the substrates 2 slide to the outer end of the grooves 11 and enabling the substrates 2 to slide along the two openings 12 around the rotating shaft 22, two groups of universal wheels 24 are disposed side by side.
As shown in fig. 1, 2, 8 and 9, a construction platform 4 above a base 1 is respectively connected with a base plate 2 on one corresponding side through two groups of folding legs 3 at the bottom of the construction platform, the bottoms of the construction platforms 4 corresponding to the two groups of folding legs 3 are respectively provided with a slot 41, a discharge bin 5 is clamped in the slot 41, the construction platform 4 between the two slots 41 is of a hollow structure, two sides of the interior of the construction platform are respectively provided with a group of expansion plates 44 controlled by an expansion motor 43, the outer end of each expansion plate 44 is provided with a plurality of fixing holes 45 side by side, the inner end of a bottom plate of the discharge bin 5 is provided with a clamping groove 51 matched and clamped with the expansion plates 44, the top surface in the clamping groove 51 is provided with bolts 52 which are the same in number as the fixing holes 45 and can pass through the fixing holes 45, the inner bottom surface of the clamping groove 51 is provided with fixing grooves 53 matched and clamped with the bolts, the screw rod 54 extends to the outer side of the bottom of the discharging bin 5, a bulge is arranged at the bottom of the discharging bin 5 corresponding to the bolts 52, and the number of the bolts 52 is 3.
As shown in fig. 2, 10 and 11, the bottom of the discharging bin 5 is fixedly and rotatably connected with a first connecting rod 31 at the outer end of the top of the folding leg 3, a second connecting rod 32 at the inner end of the top of the folding leg 3 is used for supporting the discharging bin 5 and is arranged in parallel with the first connecting rod 31, an electro-hydraulic push rod 34 is arranged in the middle of a third connecting rod 33 below the first connecting rod 31, the electro-hydraulic push rod 34 is a commercially available DYTZ integral straight electro-hydraulic push rod, the output end of the electro-hydraulic push rod 34 is connected with the bottom of the discharging bin 5 and is used for controlling the lifting of the discharging bin 5, a lifting motor 35 used for controlling the stretching of the folding leg 3 is arranged at the bottom of the folding leg 3, the lifting motor 35 is a commercially available lifting motor for construction, a footpath 42 is arranged on the.
The working principle of the lifting type operation unloading platform for the peripheral construction of the house building is as follows:
firstly, the device is moved to the side of a building needing building construction through the roller 14, the base plate is firmly fixed by using the hydraulic jack 16, a worker stands on a footpath 42 of the construction platform 4, materials needing to be used are placed in the discharging bin 5, the lifting motor 35 is started to control the folding supporting legs 3 to stretch and open, the construction platform 4 and the discharging bin 5 are lifted to the appointed construction position, and the building construction is started;
when the materials are used and need to be filled, a worker clockwise rotates the screw 54 at the bottom of one of the discharging bins 5, the screw 54 drives the 3 bolts 52 in threaded connection with the screw to simultaneously move upwards, the bolts 52 are separated from the fixed grooves 53 and are drawn out from the fixed holes 45, at the moment, the telescopic motor 43 is started to enable the telescopic plate 44 to be retracted into the construction platform 4 from the inside of the slot 41, the discharging bin 5 and the construction platform 4 are not clamped any more, meanwhile, the telescopic plate 44 clamped with the other discharging bin 5 is kept clamped, the discharging bin 5 is placed to reload the materials, the bottom is lifted to be parallel to the construction platform 4 again, the telescopic motor 43 is started to enable the telescopic plate 44 to extend into the slot 41 from the inside of the construction platform 4, the screw 54 is rotated anticlockwise, the screw 54 drives the 3 bolts 52 in threaded connection with the screw to simultaneously move downwards, the fixing holes 45 are penetrated and then are butted with the fixed grooves 53, and the telescopic plate, recovering construction;
when materials need to be conveyed into each window on a building, after the construction platform 4 is put in place, one of the discharging bins 5 is lowered by the method for a certain distance, the top surface of the discharging bin 5 is lower than the bottom surface of the construction platform 4, the pulley 21 of the control substrate 2 slides outwards along the first slide rail 61 until the rotating shaft 22 is contacted with the rotating shaft clamping groove 13, after the distance is adjusted, the motor 23 is started to enable the rotating shaft 22 to rotate around the rotating shaft clamping groove 13, meanwhile, the second rotating shaft 64 rotates around the first rotating shaft 63 to drive the second slide rail 62 to rotate around the first slide rail 61, the substrate 2 rotates around the rotating shaft 22 along the two openings 12, when the motor 23 is started, the controller 65 starts to work to enable the pressing plate 66 to press and fix the pulley 21 downwards to prevent the substrate 2 from sliding, after the substrate 2 rotates by 90 degrees, the discharging bin 5 rotates by the same angle and is aligned with the window needing to be discharged, at the moment, the electro-hydraulic push, the discharging bin 5 rotates and lifts around the first connecting rod 31, and materials are poured to different windows.
Claims (8)
1. The lifting type operation unloading platform for the peripheral construction of the house building is characterized by comprising a base (1) for bearing the whole device, wherein a group of grooves (11) are respectively formed in the left side and the right side of the base (1), a group of openings (12) are respectively formed in the front side and the rear side of the outer end of each groove (11), a group of sliding rails (6) are respectively arranged on the front side and the rear side of the inner end of each groove (11), each sliding rail (6) comprises a first sliding rail (61) positioned in the base (1) and a second sliding rail (62) extending into the openings (12), the first sliding rail (61) is rotatably connected with the second sliding rail (62),
every group all be equipped with in recess (11) a set of through two sets of pulley (21) with slide rail (6) sliding connection's base plate (2), two sets of base plate (2) inner center all is equipped with pivot (22) perpendicular to base plate (2), and base plate (2) inside of pivot (22) bottom is equipped with the rotatory motor (23) of control pivot (22), and the base (1) inside center department that is located recess (11) department is equipped with rectangular form pivot draw-in groove (13), pivot draw-in groove (13) inner wall and pivot (22) aequilate and inner are equipped with the entry, and it is used for when base plate (2) slide to recess (11) outer end with pivot (22) joint and make base plate (2) revolute pivot (22) along two openings (12),
the construction platform (4) above the base (1) is respectively connected with the base plate (2) on one side corresponding to the construction platform through two groups of folding supporting legs (3) at the bottom of the construction platform (4) corresponding to the two groups of folding supporting legs (3), the unloading bin (5) is arranged in the slot (41) in a clamping manner, the interior of the construction platform (4) between the two slots (41) is of a hollow structure, a group of expansion plates (44) controlled by an expansion motor (43) are respectively arranged on two sides in the construction platform, the outer end of each expansion plate (44) is provided with a plurality of fixing holes (45) side by side, the inner end of the bottom plate of the unloading bin (5) is provided with a clamping groove (51) which is matched and clamped with the expansion plates (44), the top surface in the clamping groove (51) is provided with bolts (52) which have the same number as the fixing holes (45) and can pass through the fixing holes (45), and the bottom surface in the clamping groove (51) is provided with a, each bolt (52) is vertically in threaded connection with a screw rod (54) above the clamping groove (51), each bolt (52) moves synchronously, the screw rods (54) extend to the outer side of the bottom of the discharging bin (5), and a protrusion is arranged at the position, corresponding to the bolt (52), of the bottom in the discharging bin (5).
2. The lifting type operation unloading platform for the building construction periphery construction is characterized in that four groups of rollers (14) are arranged at the bottom of the base (1), a group of telescopic rods (15) perpendicular to the base plate (2) are respectively arranged at the front side and the rear side of the base (1), and two sides of each telescopic rod (15) are respectively connected with a hydraulic jack (16) used for supporting the base (1) through a group of connecting rods.
3. The lifting type operation unloading platform for building construction periphery construction according to claim 1 is characterized in that two groups of universal wheels (24) are arranged side by side at the bottom of the outer end of the base plate (2).
4. The lifting type operation discharging platform for building construction periphery construction according to claim 1, wherein a second rotating shaft (64) at the front end of the second sliding rail (62) is embedded in a first rotating shaft (63) at the tail end of the first sliding rail (61), and the second rotating shaft (64) is rotatably connected with the first rotating shaft (63).
5. The lifting type operation discharging platform for building construction periphery construction according to claim 1, wherein the first sliding rail (61) and the second sliding rail (62) are provided with an upper sliding way and a lower sliding way, a pressing plate (66) which is controlled by a controller (65) to be pressed and lifted is arranged in the upper sliding way of the second sliding rail (62) and used for limiting the movement of the pulley (21) when the pressing plate is pressed down, the pressing plate (66) is connected with the controller (65) through push rods positioned on two sides and a spring positioned in the middle, and the controller (65) is electrically connected with the motor (23).
6. The lifting type operation discharging platform for building construction periphery construction is characterized in that the bottom of the discharging bin (5) is fixedly and rotatably connected with a first connecting rod (31) at the outer end of the top of the folding leg (3), a second connecting rod (32) at the inner end of the top of the folding leg (3) is used for supporting the discharging bin (5) and is arranged in parallel with the first connecting rod (31), an electro-hydraulic push rod (34) is arranged in the middle of a third connecting rod (33) below the first connecting rod (31), the output end of the electro-hydraulic push rod (34) is connected with the bottom of the discharging bin (5) and is used for controlling the lifting of the discharging bin (5), and a lifting motor (35) used for controlling the stretching of the folding leg (3) is arranged at the bottom of the folding leg.
7. The lifting type operation discharging platform for building construction periphery construction according to claim 1 is characterized in that a footpath (42) is arranged on the construction platform (4) around the discharging bin (5), skid-proof protrusions are arranged on the footpath (42), and a fence is arranged on the periphery of the footpath (42).
8. The elevating-type operation unloading platform for building construction periphery construction of claim 1, wherein the base plate (2) has a telescopic length not exceeding 2/3 of its total length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011205431.3A CN112482782A (en) | 2020-11-02 | 2020-11-02 | Lifting type operation unloading platform for building construction periphery construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011205431.3A CN112482782A (en) | 2020-11-02 | 2020-11-02 | Lifting type operation unloading platform for building construction periphery construction |
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| Publication Number | Publication Date |
|---|---|
| CN112482782A true CN112482782A (en) | 2021-03-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011205431.3A Pending CN112482782A (en) | 2020-11-02 | 2020-11-02 | Lifting type operation unloading platform for building construction periphery construction |
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| CN (1) | CN112482782A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102926529A (en) * | 2011-08-11 | 2013-02-13 | 北京建筑工程学院 | Self-elevating scaffold provided with telescoping platforms for building construction |
| CN207079942U (en) * | 2017-07-26 | 2018-03-09 | 四川建筑职业技术学院 | A kind of vertical lefting conveyer structure of construction |
| CN108385989A (en) * | 2018-01-29 | 2018-08-10 | 卢渭彬 | A kind of Overhanging-type mobile blanking platform for building construction |
| CN111364743A (en) * | 2018-12-25 | 2020-07-03 | 广州乐享家互联网服务有限责任公司 | Lifting type construction platform for house building engineering |
| CN211169700U (en) * | 2019-10-15 | 2020-08-04 | 中国建筑第八工程局有限公司 | Support for house building engineering |
-
2020
- 2020-11-02 CN CN202011205431.3A patent/CN112482782A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102926529A (en) * | 2011-08-11 | 2013-02-13 | 北京建筑工程学院 | Self-elevating scaffold provided with telescoping platforms for building construction |
| CN207079942U (en) * | 2017-07-26 | 2018-03-09 | 四川建筑职业技术学院 | A kind of vertical lefting conveyer structure of construction |
| CN108385989A (en) * | 2018-01-29 | 2018-08-10 | 卢渭彬 | A kind of Overhanging-type mobile blanking platform for building construction |
| CN111364743A (en) * | 2018-12-25 | 2020-07-03 | 广州乐享家互联网服务有限责任公司 | Lifting type construction platform for house building engineering |
| CN211169700U (en) * | 2019-10-15 | 2020-08-04 | 中国建筑第八工程局有限公司 | Support for house building engineering |
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Application publication date: 20210312 |