Please select the most similar patent number from A, B, C and D. Which number is?
A garbage bag packing mechanism and an intelligent garbage bin. The packing mechanism is disposed in a trash bin body (1), and a location at a top part of an inner wall of the trash bin body (1) is provided with a first fixed side and a second fixed side intersecting with the first fixed side. The packing mechanism comprises a first pressing rod (2) capable of sliding along the second fixed side, and a second pressing rod (3) capable of sliding along the first fixed side, wherein the first pressing rod (2) and the second pressing rod (3) may draw a garbage bag to the intersection location of the first fixed side and the second fixed side, and a hot melting device (4) is disposed near the intersection location. The packing mechanism further comprises a driving device (9) for driving the first pressing rod (2) and the second pressing rod (3) to move.
A: Disclosed is a novel environmentally friendly trash bin, comprising an upper bin body and a lower bin body (1, 2). An upper part of the upper bin body (1) is provided with a trash inlet (11), and a top cap (12) is provided at the top of the upper bin body (1). Cross bars (13) are symmetrically and horizontally arranged on the periphery of the upper bin body (1). Vertical supporting rods (14) are connected to outer ends of the cross bars (13). The lower bin body (2) is arranged under the upper bin body (1). The lower bin body (2) comprises a base (21), and a cavity for storing trash is provided in the base (21). An umbrella-shaped trash collection plate (3), which can be flattened and folded upward, is arranged on the periphery of the base (21). A driving mechanism is arranged in the base (21) and the driving mechanism is connected to the collection plate (3). The driving mechanism is controlled by a trash collection system. The novel environmentally friendly trash bin has the beneficial effects that trash falling around the trash bin due to the carelessness of pedestrians can be automatically collected, the urban environment can be beautified, and the workload of sanitation workers can be reduced. Trash on the periphery and top of the trash bin can be collected at the same time, and collection can be completed once without manual operation.
B: A foldable bicycle, comprising: a front wheel (1), a rear wheel (2), a handle (3), a main beam (4), a support rod (5), a pedal mechanism (6), a first fixing lock (453), and a second fixing lock (432), wherein the front wheel (1) is connected to the handle (3); the pedal mechanism (6) and the rear wheel (2) are connected by means of a chain (8) to drive the rear wheel (2) to rotate; one end of the support rod (5) is provided with a seat cushion (7), and the other end passes through a through hole (451) left on the main beam (4) and is connected to the pedal mechanism (6); one end of the main beam (4) is connected to the handle (3), and the other end is connected to the pedal mechanism (6) by means of a first rotating shaft (61); by means of moving along the through hole (451), the support rod (5) can drive the pedal mechanism (6) to rotate along the first rotating shaft (61) and approach the main beam (4); the first fixing lock (453) is used for fixing the relative position of the support rod (5) and the main beam (4); a second rotating shaft (41) is provided at the part where the through hole (451) on the main beam (4) is connected to the handle (3), and the main beam (4) can be bent along the second rotating shaft (41) so that the front wheel (1) and the rear wheel (2) approach each other; the second fixing lock (432) is used for fixing the main beam (4) in a non-bending state.
C: A cutting fixing device for textile manufacturing, comprising a cutting table (3) and a vertical support (2) provided on the upper side surface of the cutting table (3). One side of the vertical support (2) is provided with a fixing assembly (1); the vertical support (2) is connected to the cutting table (3) by means of a direction adjustment assembly; the fixing assembly (1) comprises a horizontal support (102) and an electric push rod (101); the electric push rod (101) is provided on the upper side surface of the horizontal support (102); a bearing support (111) is provide at the bottom of a piston rod of the electric push rod (101); a pressing sleeve (103) and a second pressing sleeve (110) are symmetrically provided on one side surface of the bearing support (111); a first spring (104) is provided at the inner top portion of the first pressing sleeve (103); one end of the first spring (104) is fixedly connected to a first pressing rod (105); the first pressing rod (105) is slidably connected in the first pressing sleeve (103); a first pressing pad (106) is provided at the bottom of the first pressing rod (105); a second spring (109) is provided at the inner top portion of the second pressing sleeve (110); one end of the second spring (109) is fixedly connected to the second pressing rod (108); the second pressing rod (108) is slidably connected in the second pressing sleeve (110); and a second pressing pad (107) is provide at the bottom of the second pressing rod (108).
D: Disclosed are a machine head for a packing machine and the packing machine. The machine head for the packing machine comprises: a mounting base (40); a sealing assembly (1), wherein the sealing assembly (1) comprises a cutter (11) and a sealing element (12), with the sealing element (12) being used for welding a packing belt (100), and the cutter (11) being used for cutting off the packing belt (100). The sealing assembly (1) further comprises a first clamping mechanism (13), a second clamping mechanism (14) and a third clamping mechanism (15), with the first clamping mechanism (13), the second clamping mechanism (14) and the third clamping mechanism (15) being used for clamping the packing belt (100). The sealing assembly (1) is slidably arranged on the mounting base (40); a belt-conveying assembly (2), wherein the belt-conveying assembly (2) comprises a first electric motor (21), a driving wheel (22) and a guide block (23), with the guide block (23) being fixedly arranged on the mounting base (40), the driving wheel (22) being rotatably arranged on the mounting base (40), a belt-conveying channel (20) of an arc-shaped structure being provided between the driving wheel and the guide block (23), and the first electric motor (21) being used for driving the driving wheel (22) to rotate; and a driving assembly (3), wherein the driving assembly (3) is used for driving the sealing assembly (1) to be close to or away from the driving wheel (22). A balanced tensioning force is applied to the packing belt by means of the packing machine head, such that the packing quality of the packing machine is improved.
Answer: A