Please select the most similar patent number from A, B, C and D. Which number is?
Disclosed is a draw-bar box having the function of a seat, the draw-bar box comprising a box body (1), wherein the box body (1) is L-shaped, a bent portion (17) of the box body (1) is in the shape of a circular arc, and a side edge of the bent portion (17) of the box body (1) is rounded; and a grip portion (2) is provided at the upper end of each of two sides of the box body (1), and a pedal portion (3) is provided at the lower end of each of the two sides of the box body (1). A user can sit on the bent portion (17), the user&#39;s hands can be placed on the grip portions (2), and the user&#39;s feet are placed on the pedal portions (3). Such a design is ergonomic, making the user feel comfortable, and at the same time, since the bent portion (17) of the box body (1) is in the shape of a circular arc and the side edge of the bent portion (17) of the box body (1) is rounded, discomfort for the user&#39;s body due to sharp angles is thus avoided.
A: A free-range poultry catcher, comprising a box (1), a trough (2) disposed inside the box (1) and used for containing feed, a connection passage (3) connected to the box (1), a pushing assembly (4) for pushing poultry toward the connection passage (3), a speaker (5) disposed on an outer surface of the box (1), and a main controller (6). A sensor (7) for sensing the position of the poultry is further provided inside the box (1); an opening is provided in one side face of the box (1), and a movable door (11) is provided at the opening; the side face where the opening is located is defined as a first side face, two side faces adjacent to the first side face are defined as a second side face and a third side face, and the side face opposite to the first side face is defined as a fourth side; the movable door (11) is connected between the second side face and the third side face by means of a rotary shaft (12) and is driven to rotate by a first driving member (13) disposed on the third side face. By means of providing the speaker (5) outside the box (1) and a trough (2) inside the box (1), the poultry can be attracted into the box (1), driven into the connection passage (3) by means of the cooperation of the pushing assembly (4) and an one-way door (31), and placed in a cage, so that there is no need to perform catching manually, thereby reducing labor costs and improving the efficiency of catching; moreover, driving the poultry to go into the cage can avoid harm to the poultry.
B: A cloth material coating device, comprising a box body (1), a liquid storage box (3), a lead screw (6), a coating roller (9), an extrusion roller (11), sliding rails (17), sliding sleeves (18), a first connecting rod (19), a second connecting rod (23), heating boxes (25) and a fan (27), wherein a cloth material unwinding roller (2) and a cloth winding roller (28) are arranged on the box body (1); the liquid storage box (3) is located inside the box body (1); a feeding hopper (4) is located above the box body (1); the lower end of the lead screw (6) is rotatably connected to a U-shaped rod (8); a discharge chute (10) is provided in the lower end of the liquid storage box (3); the extrusion roller (11) is located at the lower end of the coating roller (9), and a fixing block (14) is arranged on the extrusion roller (11); a sliding block (15) is arranged on the fixing block (14), and the lower end of the fixing block (14) is connected to the other end of a spring (16); two groups of sliding rails (17) are symmetrically arranged inside the box body (1); row brushes (22) are arranged at the lower ends of the sliding sleeves (18); the first connecting rod (19) is rotatably arranged on one sliding sleeve (18); an electric motor (20) is arranged in the box body (1); the other end of the first connecting rod (19) is rotatably connected to a rotating disc (21); a rotating shaft (24) is arranged in the box body (1); the second connecting rod (23) is rotatably arranged on the rotating shaft (24); and the heating boxes (25) are arranged at the right ends of the sliding rails (17). The device utilizes the coating roller and the row brushes, such that coatings are distributed more uniformly, thereby improving the quality and effect of the coatings.
C: An apparatus for processing a flexible elastic coiled material, comprising a bottom plate (1), a lower material winding roller (4), an upper material winding roller (5), a motor (6), a rubber roller (11), a press roller (16), a movable plate (17), a coating barrel (18), a flattening plate (22), an air inlet pipe (23) and an air inlet fan (25); a box body (2) is fixedly provided on the bottom plate (1), the lower material winding roller (4) and the upper material winding roller (5) are rotatably provided on a side surface of the box body (2), and the motor (6) is fixedly provided on a side plate of the box body (2); the rubber roller (11) is rotatably provided between first support frames (10), and a rubber pipe (12) is provided on one side of the rubber roller (11); a brush (14) is provided on the outer surface of the rubber roller (11), and the press roller (16) is rotatably provided between second support frames (15) on two sides; the movable plate (17) is slidably provided inside the box body (2), the coating barrel (18) is fixedly provided on the movable plate (17), a hydraulic cylinder (19) is provided below the top of the box body (2), and a U-shaped plate (20) is provided at an output end of the hydraulic cylinder (19); a spraying device (21) is provided at the bottom of the coating barrel (18), and the flattening plate (22) is fixedly provided at the bottom of the movable plate (17); and the air inlet pipe (23) is provided inside the box body (2), a wind-up roller (26) is also rotatably provided on the bottom plate (1), and the wind-up roller (26) is located on a side surface of the box body (2).
D: A multifunction suitcase comprising a suitcase body (100), casters (200) arranged at the bottom face of the suitcase body, a pull handle (300) arranged at the rear face of the suitcase body, a first platform (400), a first support leg (500), and a second support leg (600). The first support leg is detachably mounted on a side of the suitcase body. A first end of the first platform is rotatably connected to the first support leg. The second support leg is arranged at the rear face of the first platform and is rotatably connected to a second end of the first platform. The multifunction suitcase provides an additional feature as a piece of furniture while taking into consideration conventional luggage features of storage, organization, and convenient movement, allows for study, work, and leisure with ease in multiple scenarios, is structurally simple, and is convenient to use. By having the first support leg arranged at the side of the suitcase body, on the one hand, the stability of the entire suitcase body is increased to provide improved support against a pressure exerted by the first platform, while on the other hand, the first support leg can be easily removed from the side of the suitcase body for convenient formation of a standalone chair.
Answer: D