Foldable lifting operation table for building construction

文档序号:4276 发布日期:2021-09-17 浏览:58次 中文

1. The utility model provides a folded cascade lift operation panel for construction which characterized in that: the foldable telescopic mechanism comprises a base (1) with a supporting function, a foldable telescopic mechanism (2), a top plate (3) for operators to stand and a traction mechanism (4), wherein the foldable telescopic mechanism (2) is installed at the top of the base (1), the top plate (3) is installed at the top of the foldable telescopic mechanism (2), the traction mechanism (4) comprises an electric winch (41), a steel wire rope (42), a first fixed pulley (43) and a second fixed pulley (44), two first fixed plates (31) are symmetrically and fixedly installed at the top of the top plate (3), one end of the electric winch (41) is fixedly welded at one side of the first fixed plate (31), a first fixed pulley (43) and a second fixed pulley (44) are respectively and fixedly installed on wall bodies (7) opposite to two sides, the first fixed pulley (43) is arranged at the top of the second fixed pulley (44), one end of the steel wire rope (42) is wound on a winding drum (411) of the electric winch (41), the other end of the steel wire rope (42) sequentially rounds a first fixed pulley (43) and a second fixed pulley (44) on the same side and is fixedly connected with a rolling mechanism (5) in the base (1).

2. Foldable lifting operating platform for building construction according to claim 1, characterized in that: the first fixed pulley (43) and the top plate (3) are located at the same horizontal height, and the second fixed pulley (44) and the base (1) are located at the same horizontal height.

3. Foldable lifting operating platform for building construction according to claim 2, characterized in that: rolling mechanism (5) is including connecting block (51), first spring (52), first connecting rod (53), second connecting rod (54), third connecting rod (55), gyro wheel (56), base (1) interior symmetry is provided with first cavity (11), the surface of connecting block (51) and the inner wall sliding connection of first cavity (11), the other end of wire rope (42) run through stretch into in first cavity (11) and with one side fixed connection of connecting block (51), the opposite side of connecting block (51) and the one end welding of first spring (52), the other end fixed mounting of first spring (52) is on the inner wall of first cavity (11), first connecting rod (53) are horizontal in second cavity (12) that sets up in base (1), the top surface edge of first connecting rod (53) and the one end fixed connection of second connecting rod (54), the other end of second connecting rod (54) run through stretch into in first cavity (11) and with the concave wedge that connecting block (51) one side set up The groove (511) is abutted, the bottom surface of the second connecting rod (54) is fixedly connected with the top end of the third connecting rod (55), and the bottom end of the third connecting rod (55) is rotatably connected with the middle shaft of the roller (56).

4. A foldable lifting operation platform for building construction according to claim 3, characterized in that: the sliding blocks (531) welded at the two ends of the first connecting rod (53) are in sliding connection with the sliding grooves (121) arranged on the inner walls of the two sides of the second cavity (12).

5. Foldable lifting operating platform for building construction according to claim 4, characterized in that: the top of the base (1) is further provided with a conveying mechanism (6) used for conveying materials, the conveying mechanism (6) comprises a conveying belt (61), a first roller shaft (62), a second roller shaft (63) and a third roller shaft (64), two ends of the first roller shaft (62) are respectively rotatably connected with one ends of two fourth connecting rods (611) which are symmetrically arranged, the other ends of the fourth connecting rods (611) are welded on the top of the top plate (3), one end of the second roller shaft (63) is fixedly connected with a driving shaft of a motor (65) through a coupler, one side of the motor (65) is fixedly installed on one side of a second fixing plate (66), the bottom of the second fixing plate (66) is welded on the base (1), the conveying mechanism (6) further comprises a first supporting plate (67), a second supporting plate (68), a second spring (69) and a fifth connecting rod (601), two ends of the first supporting plate (67) are respectively welded with one ends of two fifth connecting rods (601) which are symmetrically arranged, the other end of a fifth connecting rod (601) is welded at the top of the base (1), two ends of a second spring (69) are fixedly connected with the first supporting plate (67) and the second supporting plate (68) respectively, two ends of a third roller shaft (64) are rotatably connected with one ends of two symmetrically-arranged sixth connecting rods (641) respectively, the other end of the sixth connecting rod (641) is welded with one side of the second supporting plate (68), and two ends of the conveying belt (61) are sleeved on the first roller shaft (62), the second roller shaft (63) and the third roller shaft (64) respectively.

6. Foldable lifting operating platform for building construction according to claim 5, characterized in that: a plurality of lifting plates (612) used for bearing materials are uniformly and fixedly arranged on the surface of the conveyor belt (61).

Background

When the wall of a large-scale factory building is constructed, a liftable operating platform is required to be used for constructing the high position of the wall, and constructors stand on the operating platform to adjust the operating platform to the required height; the bottom of the operation table is generally provided with rollers, and when the construction site needs to be changed, the rollers are driven by a motor or the operation table is pushed to a preset position.

When the operation platform needs to be maintained at a certain height and construction sites are frequently switched, the operation platform is high, the operation platform is driven by the motor to roll, so that the operation height needs to be reduced firstly and then moved, the operation platform is unsafe due to the fact that the gravity center is too high and unstable, then the operation platform is lifted, if repeated, the operation process is increased, and the construction efficiency is not high.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a foldable lifting operation table for building construction, which is provided with a traction mechanism, so that the stability of equipment in moving is improved, the operation table does not need to be moved after the height of the operation table is reduced, and the construction efficiency is improved.

The technical scheme adopted by the invention for solving the technical problems is as follows: a foldable lifting operating platform for building construction comprises a base for supporting, a folding telescopic mechanism, a top plate for operators to stand and a traction mechanism, the folding telescopic mechanism is arranged on the top of the base, the top plate is arranged on the top of the folding telescopic mechanism, the traction mechanism comprises an electric winch, a steel wire rope, a first fixed pulley and a second fixed pulley, two first fixed plates are symmetrically and fixedly arranged on the top of the top plate, one end of the electric winch is fixedly welded on one side of the first fixed plate, the first fixed pulley and the second fixed pulley are respectively and fixedly arranged on the wall bodies opposite to the two sides, the first fixed pulley is arranged on the top of the second fixed pulley, one end of the steel wire rope is wound on a winding drum of the electric winch, and the other end of the steel wire rope sequentially bypasses the first fixed pulley and the second fixed pulley on the same side and is fixedly connected with a rolling mechanism in the base.

When the wall of the large-scale factory building is constructed, a constructor moves to the top plate, the electric winch on the left side is electrified, and the winding drum winds the steel wire rope to enable the operation platform to integrally move leftwards; similarly, when the operation table needs to move rightwards, the electric winch on the right side is electrified, the winding drum winds the steel wire rope to enable the operation table to move rightwards integrally, so that a constructor standing at the top of the operation table can move the operation table independently, the first fixed pulley and the second fixed pulley are arranged on the wall body, the first fixed pulley and the top plate are located at the same horizontal height, the second fixed pulley and the base are located at the same horizontal height, the sizes of tension forces borne by the base and the top plate are the same, and the possibility of side turning of the operation table during moving is reduced.

Specifically, the folding telescopic mechanism adopts a connecting rod structure, and the folding telescopic mechanism is driven to stretch through the stretching of the hydraulic rod, so that the purpose of lifting the top plate is achieved.

Specifically, the rolling mechanism comprises a connecting block, a first spring, a first connecting rod, a second connecting rod, a third connecting rod and a roller, wherein a first cavity is symmetrically arranged in the base, the surface of the connecting block is in sliding connection with the inner wall of the first cavity, the other end of the steel wire rope penetrates through the first cavity and is fixedly connected with one side of the connecting block, the other side of the connecting block is welded with one end of the first spring, the other end of the first spring is fixedly arranged on the inner wall of the first cavity, the first connecting rod is transversely arranged in the second cavity arranged in the base, the edge of the top surface of the first connecting rod is fixedly connected with one end of the second connecting rod, the other end of the second connecting rod penetrates through the first cavity and is abutted against a wedge-shaped groove arranged on one side of the connecting block, the bottom surface of the second connecting rod is fixedly connected with the top end of the third connecting rod, and the bottom end of the third connecting rod is rotatably connected with the center shaft of the roller, the roller is arranged in the spherical cavity of the base. When the electric hoist of one side starts, reel winding wire rope makes the operation panel wholly to moving with one side, under the effect of wire rope tension, first spring extension, the connecting block moves towards the direction of wall body, through the conflict second connecting rod of wedge groove, make first connecting rod downstream, release the gyro wheel from spherical intracavity through the third connecting rod, when the operation panel removes the position that needs, the power failure of electric hoist, under the effect of gravity, the spherical intracavity of gyro wheel withdrawal, the area of contact grow on base and ground, make equipment stability when static stronger.

Specifically, the sliding blocks welded at the two ends of the first connecting rod are connected with sliding grooves arranged on the inner walls of the two sides of the second cavity in a sliding mode. When the second connecting rod on one side receives the conflict drive first connecting rod downstream of wedge recess, through setting up slider and spout for whole downstream under the circumstances of one side atress can be at first connecting rod, and then makes the gyro wheel of base bottom all can follow the spherical intracavity and stretch out, strengthens the stability of equipment.

Specifically, the top of the base is further provided with a conveying mechanism for transferring materials, the conveying mechanism comprises a conveying belt, a first roller shaft, a second roller shaft and a third roller shaft, two ends of the first roller shaft are respectively and rotatably connected with one ends of two symmetrically arranged fourth connecting rods, the other ends of the fourth connecting rods are welded on the top of the top plate, one end of the second roller shaft is fixedly connected with a driving shaft of a motor through a coupler, one side of the motor is fixedly arranged on one side of a second fixing plate, the bottom of the second fixing plate is welded on the base, the conveying mechanism further comprises a first supporting plate, a second spring and fifth connecting rods, two ends of the first supporting plate are respectively and rotatably connected with one ends of two symmetrically arranged fifth connecting rods, the other end of the fifth connecting rod is welded on the top of the base, two ends of the second spring are respectively and fixedly connected with the first supporting plate and the second supporting plate, two ends of the third roller shaft are respectively and rotatably connected with one ends of two symmetrically arranged sixth connecting rods, the other end of the sixth connecting rod is welded with one side of the second supporting plate, and two ends of the conveying belt are respectively sleeved on the first roller shaft, the second roller shaft and the third roller shaft. When a constructor stands on the top plate, the motor is powered on and turned on, a driving shaft of the motor drives the second roller shaft to rotate, the second roller shaft drives the conveying belt to rotate, and materials required to be used for construction are conveyed to the top plate; folding telescopic machanism is when flexible, the height of roof also changes, the roof drives first roller through the fourth connecting rod and goes up and down, when the roof goes up, the conveyer belt is taut, the pressure grow that the third roller surface received the conveyer belt, through sixth connecting rod and second backup pad and extrusion second spring, when the roof descends, the conveyer belt relaxs, the pressure that the third roller surface received the conveyer belt diminishes, under the spring action of second spring, second backup pad and fourth connecting rod extrusion third roller move towards the direction that deviates from the second roller, and then make the conveyer belt taut all the time, homoenergetic promotes the material when the roof altitude variation, the usability of equipment has been increased.

Specifically, the surface of conveyer belt is even fixed mounting has a plurality of lifting plates that are used for bearing the weight of the material, lifting plate can play the effect of supplementary promotion when the conveyer belt rotates and promotes the material.

The invention has the beneficial effects that:

(1) according to the foldable lifting operation platform for building construction, the traction mechanism is used, the electric winch on the left side is electrified, and the winding drum winds the steel wire rope to enable the operation platform to integrally move leftwards; similarly, when the operation table needs to move rightwards, the electric winch on the right side is electrified, the winding drum winds the steel wire rope to enable the operation table to move rightwards integrally, so that a constructor standing at the top of the operation table can move the operation table independently, the first fixed pulley and the second fixed pulley are arranged on the wall body, the first fixed pulley and the top plate are located at the same horizontal height, the second fixed pulley and the base are located at the same horizontal height, the sizes of tension forces borne by the base and the top plate are the same, and the possibility of side turning of the operation table during moving is reduced.

(2) When the electric winch on one side is started, the reel winds the steel wire rope to enable the whole operation table to move towards the same side, the first spring extends under the action of the tension of the steel wire rope, the connecting block moves towards the wall body and abuts against the second connecting rod through the wedge-shaped groove, the first connecting rod moves downwards, the roller is pushed out of the spherical cavity through the third connecting rod, when the operation table moves to a required position, the electric winch is powered off, the roller retracts into the spherical cavity under the action of gravity, the contact area between the base and the ground is increased, and the stability of equipment is higher when the equipment is static.

(3) According to the foldable lifting operation platform for building construction, the transportation mechanism and the folding telescopic mechanism are used in a matched mode, when the folding telescopic mechanism stretches, the height of the top plate also changes, the top plate drives the first roller shaft to lift through the fourth connecting rod, when the top plate rises, the conveyor belt is tensioned, the pressure of the third roller shaft on the surface of the third roller shaft is increased, the sixth connecting rod and the second supporting plate extrude the second spring, when the top plate descends, the conveyor belt is loosened, the pressure of the third roller shaft on the surface of the third roller shaft is reduced, under the action of the elastic force of the second spring, the second supporting plate and the fourth connecting rod extrude the third roller shaft to move in the direction deviating from the second roller shaft, the conveyor belt is tensioned all the time, materials can be improved when the height of the top plate changes, and the usability of equipment is improved.

Drawings

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic overall structure diagram of a foldable lifting operating platform for building construction provided by the invention;

FIG. 2 is a top view of the integrated mechanism shown in FIG. 1;

FIG. 3 is a cross-sectional view taken along line a-a of FIG. 2;

FIG. 4 is a schematic view of the connection of the apparatus of FIG. 3 to a wall;

FIG. 5 is an enlarged view of portion A of FIG. 4;

fig. 6 is an enlarged view of a portion B shown in fig. 1.

In the figure: 1. a base; 11. a first cavity; 12. a second cavity; 121. a chute; 13. a spherical cavity; 2. a folding telescopic mechanism; 21. a hydraulic lever; 3. a top plate; 31. a first fixing plate; 4. a traction mechanism; 41. an electric hoist; 411. a reel; 42. a wire rope; 43. a first fixed pulley; 44. a second fixed pulley; 5. a rolling mechanism; 51. connecting blocks; 511. a wedge-shaped groove; 52. a first spring; 53. a first link; 531. a slider; 54. a second link; 55. a third link; 56. a roller; 6. a transport mechanism; 61. a conveyor belt; 612. a lifting plate; 611. a fourth link; 62. a first roller shaft; 63. a second roller shaft; 64. a third roller shaft; 641. a sixth link; 65. a motor; 66. a second fixing plate; 67. a first support plate; 68. a second support plate; 69. a second spring; 601. a fifth link; 7. a wall body.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 6, the foldable lifting operation platform for building construction according to the present invention comprises a base 1 for supporting, a folding telescopic mechanism 2, a top plate 3 for an operator to stand, and a traction mechanism 4, wherein the folding telescopic mechanism 2 is installed on the top of the base 1, the top plate 3 is installed on the top of the folding telescopic mechanism 2, the traction mechanism 4 comprises an electric hoist 41, a steel wire rope 42, a first fixed pulley 43 and a second fixed pulley 44, two first fixed plates 31 are symmetrically and fixedly installed on the top of the top plate 3, one end of the electric hoist 41 is fixedly welded on one side of the first fixed plate 31, a first fixed pulley 43 and a second fixed pulley 44 are respectively and fixedly installed on the wall 7 opposite to the two sides, the first fixed pulley 43 is installed on the top of the second fixed pulley 44, one end of the steel wire rope 42 is wound on a winding drum 411 of the electric hoist 41, the other end of the wire rope 42 sequentially passes around the first fixed pulley 43 and the second fixed pulley 44 on the same side and is fixedly connected with the rolling mechanism 5 in the base 1.

When the wall of the large-scale factory building is constructed, as shown in fig. 3, a constructor moves to the top plate 3, the electric winch 41 on the left side is electrified, and the winding drum 411 winds the steel wire rope 42 to enable the whole operation table to move leftwards; similarly, when the operation table needs to be moved rightwards, the electric winch 41 on the right side is electrified, the winding drum 411 winds the steel wire rope 42 to enable the operation table to be moved rightwards integrally, a constructor standing on the top of the operation table can move the operation table independently, the first fixed pulley 43 and the top plate 3 are located at the same horizontal height through the first fixed pulley 43 and the second fixed pulley 44 arranged on the wall 7, the second fixed pulley 44 and the base 1 are located at the same horizontal height, the pulling force on the base 1 and the top plate 3 is the same, and the possibility that the operation table turns on one side when moving is reduced.

Specifically, the folding telescopic mechanism 2 adopts a link structure, and the extension and retraction of the folding telescopic mechanism 2 are driven by the extension and retraction of the hydraulic rod 21, so as to achieve the purpose of lifting the top plate 3.

Specifically, the rolling mechanism 5 includes a connection block 51, a first spring 52, a first connection rod 53, a second connection rod 54, a third connection rod 55, and a roller 56, wherein the first cavity 11 is symmetrically disposed in the base 1, a surface of the connection block 51 is slidably connected with an inner wall of the first cavity 11, the other end of the wire rope 42 penetrates through the first cavity 11 and is fixedly connected with one side of the connection block 51, the other side of the connection block 51 is welded with one end of the first spring 52, the other end of the first spring 52 is fixedly mounted on the inner wall of the first cavity 11, the first connection rod 53 is transversely disposed in the second cavity 12 disposed in the base 1, a top surface edge of the first connection rod 53 is fixedly connected with one end of the second connection rod 54, the other end of the second connection rod 54 penetrates through the first cavity 11 and abuts against a wedge groove 511 disposed on one side of the connection block 51, a bottom surface of the second connection rod 54 is fixedly connected with a top end of the third connection rod 55, the bottom end of the third connecting rod 55 is rotatably connected with the central shaft of the roller 56, and the roller 56 is arranged in the spherical cavity 13 of the base 1. When the electric hoist 41 on one side starts, the reel 411 twines wire rope 42 and makes the operation panel wholly move to the same side, under the effect of wire rope 42 pulling force, first spring 52 extends, connecting block 51 moves towards the direction of wall body 7, conflict second connecting rod 54 through wedge groove 511, make first connecting rod 53 move down, push out gyro wheel 56 from spherical chamber 13 through third connecting rod 55, when the operation panel moves to required position, electric hoist 41 cuts off the power supply, under the effect of gravity, gyro wheel 56 retracts in spherical chamber 13, the area of contact on base 1 and ground grow, make equipment stability when static stronger.

Specifically, the sliding blocks 531 welded at the two ends of the first connecting rod 53 are slidably connected with the sliding grooves 121 formed on the inner walls of the two sides of the second cavity 12. When the second connecting rod 54 on one side is abutted by the wedge-shaped groove 511 to drive the first connecting rod 53 to move downwards, the first connecting rod 53 can integrally move downwards under the condition of one side stress by arranging the sliding block 531 and the sliding groove 121, and then the roller 56 at the bottom of the base 1 can extend out of the spherical cavity 13, so that the stability of the equipment is enhanced.

Specifically, the top of the base 1 is further provided with a transport mechanism 6 for transferring materials, the transport mechanism 6 includes a conveyor belt 61, a first roller shaft 62, a second roller shaft 63 and a third roller shaft 64, two ends of the first roller shaft 62 are respectively rotatably connected with one end of two symmetrically arranged fourth connecting rods 611, the other end of each fourth connecting rod 611 is welded on the top of the top plate 3, one end of the second roller shaft 63 is fixedly connected with a driving shaft of a motor 65 through a coupler, one side of the motor 65 is fixedly arranged on one side of a second fixing plate 66, the bottom of the second fixing plate 66 is welded on the base 1, the transport mechanism 6 further includes a first support plate 67, a second support plate 68, a second spring 69 and a fifth connecting rod 601, two ends of the first support plate 67 are respectively welded with one end of two symmetrically arranged fifth connecting rods 601, the other end of the fifth connecting rod 601 is welded on the top of the base 1, two ends of the second spring 69 are respectively fixedly connected with the first support plate 67 and the second support plate 68, two ends of the third roller 64 are respectively and rotatably connected with one ends of two symmetrically arranged sixth connecting rods 641, the other end of the sixth connecting rod 641 is welded with one side of the second supporting plate 68, and two ends of the conveyor belt 61 are respectively sleeved on the first roller 62, the second roller 63 and the third roller 64. When a constructor stands on the top plate 3, the motor 65 is powered on and turned on, the driving shaft of the motor 65 drives the second roller shaft 63 to rotate, the second roller shaft 63 drives the conveyor belt 61 to rotate, and materials required to be used in construction are conveyed to the top plate 3; when the folding telescopic mechanism 2 is telescopic, the height of the top plate 3 also changes, the top plate 3 drives the first roller 62 to lift through the fourth connecting rod 611, when the top plate 3 lifts, the conveyor belt 61 is tensioned, the surface of the third roller 64 is pressed by the conveyor belt 61 to be increased, the sixth connecting rod 641, the second support plate 68 and the second spring 69 are pressed, when the top plate 3 descends, the conveyor belt 61 is loosened, the surface of the third roller 64 is pressed by the conveyor belt 61 to be decreased, under the elastic action of the second spring 69, the second support plate 68 and the fourth connecting rod 611 press the third roller 64 to move towards the direction departing from the second roller 63, so that the conveyor belt is always tensioned 61, materials can be all lifted when the height of the top plate 3 changes, and the usability of the equipment is increased.

Specifically, a plurality of lifting plates 612 for carrying the material are uniformly and fixedly mounted on the surface of the conveyor belt 61, and the lifting plates 612 can play a role in assisting lifting when the conveyor belt 61 rotates to lift the material.

When the operation is carried out, a constructor moves to the top plate 3, the electric winch 41 on the left side is electrified, and the winding drum 411 winds the steel wire rope 42 to enable the operation table to integrally move leftwards; similarly, when the operation table needs to be moved rightwards, the electric winch 41 on the right side is electrified, the winding drum 411 winds the steel wire rope 42 to enable the operation table to be moved rightwards integrally, so that a constructor standing on the top of the operation table can move the operation table independently, the first fixed pulley 43 and the top plate 3 are located at the same horizontal height through arranging the first fixed pulley 43 and the second fixed pulley 44 on the wall 7, the second fixed pulley 44 and the base 1 are located at the same horizontal height, the pulling force on the base 1 and the top plate 3 is the same, and the possibility of side turning of the operation table during moving is reduced; when the electric winch 41 on one side is started, the winding drum 411 winds the steel wire rope 42 to enable the operation platform to integrally move to the same side, under the action of the tensile force of the steel wire rope 42, the first spring 52 extends, the connecting block 51 moves towards the direction of the wall 7 and butts against the second connecting rod 54 through the wedge-shaped groove 511 to enable the first connecting rod 53 to move downwards, the roller 56 is pushed out of the spherical cavity 13 through the third connecting rod 55, when the operation platform moves to a required position, the electric winch 41 is powered off, under the action of gravity, the roller 56 retracts into the spherical cavity 13, the contact area of the base 1 and the ground is increased, and the stability of the equipment is higher when the equipment is static; when materials need to be transferred to the top plate 3, the motor 65 is powered on and turned on, the driving shaft of the motor 65 drives the second roller shaft 63 to rotate, the second roller shaft 63 drives the conveyor belt 61 to rotate, and then the materials needed to be used in construction are conveyed to the top plate 3; when the folding telescopic mechanism 2 is telescopic, the height of the top plate 3 also changes, the top plate 3 drives the first roller 62 to lift through the fourth connecting rod 611, when the top plate 3 lifts, the conveyor belt 61 is tensioned, the surface of the third roller 64 is pressed by the conveyor belt 61 to be increased, the sixth connecting rod 641, the second support plate 68 and the second spring 69 are pressed, when the top plate 3 descends, the conveyor belt 61 is loosened, the surface of the third roller 64 is pressed by the conveyor belt 61 to be decreased, under the elastic action of the second spring 69, the second support plate 68 and the fourth connecting rod 611 press the third roller 64 to move towards the direction departing from the second roller 63, so that the conveyor belt is always tensioned 61, materials can be all lifted when the height of the top plate 3 changes, and the usability of the equipment is increased.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the embodiments and descriptions given above are only illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claims. The scope of the invention is defined by the appended claims and equivalents thereof.

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