Please select the most similar patent number from A, B, C and D. Which number is?
A stamping-resistant integrated hydraulic machine, comprising a base (1), a square supporting column (2), a rotary table (3), a lifting stamping device and die (5), a hydraulic oil cylinder (6), and a control panel (10) which are arranged in sequence from bottom to top. The hydraulic oil cylinder is disposed on the top of the lifting stamping device and die (5) and goes up and down along with the lifting stamping device and die. At least two guiding columns (4) are disposed in the position between the lifting stamping device and die and the base and close to the square supporting column. The square supporting column is disposed at one side of the base (1). The rotary table is driven by a rotary shaft (7) and a motor (8) to rotate above the base (1). An air rubber spring (9) is further connected between the rotary table and the base. A compression spring (14) is further sleeved in the air rubber spring. Both ends of the air rubber spring and both ends of the compression spring are respectively fixed to the bottom of the rotary table and the top of the base. The stamping-resistant integrated hydraulic machine is convenient to operate and has a good vertical lifting degree.
A: A removal and cleanup apparatus for a vertical support structure, which comprises a movement mechanism (10), dust removal apparatuses (30), a hydraulic lift machine group, a self-balancing system, and an information processing platform, wherein the movement mechanism (10) comprises a base (11), a plurality of pairs of roller wheels (12) arranged on bottom parts of the base (11), and a plurality of extendable support legs (14) arranged on two sides of the base (11); the dust removal apparatuses (30) are arranged in intervals at top parts of the movement mechanism (10), and said apparatuses comprise cylindrical main bodies, clamping mechanisms, and cutting machines (60), the cylindrical main bodies comprise integrally connected dust removal covers and support platforms (31), the clamping mechanisms and the cutting machines (60) are arranged in inner cavities of the cylindrical main bodies and are fixedly connected to the support platforms (31), a vertical support structure (1) to be removed is supported by the support platforms (31) and external parts thereof are covered by the dust removal covers, the clamping mechanisms clamp the vertical support structure (1), and the cutting machines (60) cut the vertical support structure (1); the hydraulic lift machine group is arranged between the movement mechanism (10) and the the dust removal apparatuses (30), and said assembly comprises a first hydraulic lift machine (21) and a second hydraulic lift machine (22) arranged vertically and in intervals along an axis of the base (11), a bottom part of the first hydraulic lift machine (21) is fixedly connected to the base (11), a bottom part of the second hydraulic lift machine (22) articulates with the base (11), and top parts of the first hydraulic lift machine (21) and the second hydraulic lift machine (22) articulate with the support platforms (31) of the dust removal apparatuses (30); the self-balancing system comprises a pressure sensor (82) and an angle sensor (81) arranged on a support platform (31) as well as pressure regulating apparatuses (83) which are respectively connected to a hydraulic cylinder of the first hydraulic lift machine (21) and the second hydraulic lift machine (22); and the information processing platform respectively establishes a signal connection with the movement mechanism (10), the self-balancing system, and the clamping mechanisms and the cutting machines (60) of the dust removal apparatuses (30).
B: A dual-purpose hydraulic machine facilitating switching gravity bearing. The dual-purpose hydraulic machine comprises an upper cross beam (4), a pressing plate mounting sliding block (6), and a top plate mounting sliding block (8). A base (9) is provided on the dual-purpose hydraulic machine facilitating switching gravity bearing; stand columns (7) are symmetrically provided on the upper portion in the base (9), the stand columns (7) are fixed to the upper portion in the base (9); the top plate mounting sliding block (8) is provided on a push shaft of a top cylinder (10) in the stand columns (7); the center of the bottom of the top plate mounting sliding block (8) is fixedly connected to the push shaft of the top cylinder (10); the upper cross beam (4) is provided at the tops of the stand columns (7), a main motor (17) is provided in the center of the top of the upper cross beam (4), and a push shaft of the main motor (17) is mounted downwards; an electromagnetic mechanism (20) is provided outside the main motor (17), downward pressing pressure of the hydraulic machine can be adjusted by switching the electromagnetic mechanism (20).
C: A deep hole device for machining of an electronic lock, comprising a base (1) and a workbench (2); the workbench (2) is arranged on the base (1), moving bases (3) are symmetrically arranged at two sides of the workbench (2), and a plurality of fixing rods (4) are arranged at the side of each moving base (3) close to the workbench (2); a compression spring (5) is fixedly connected to one end of each fixing rod (4), a hinge member (6) is fixedly connected to the other end of the compression spring (5), and an anti-slip rubber base (7) is hinged to the hinge member (6); the fixing rod (4) is arranged on the moving base (3) in a penetrating manner, and a rotating rod (8) is hinged to a joint between the fixing rod and the moving base; a lifting/lowering rod (9) is arranged inside the moving base (3), a lifting/lowering device (10) is arranged at a lower position of the lifting/lowering rod (9), a dust removal tube (22) is arranged at one side above the workbench (2), and the dust removal tube (22) is in communication with a dust removal box body (23). The deep hole device improves the effect of fixing an electronic lock and prevents deviation of the electronic lock during machining, the deviation affecting the effect and efficiency of machining an inductor of the electronic lock; and the deep hole device can make adjustments according to electronic locks of different specifications, and has very good applicability.
D: Disclosed is a sliding rail punching locking plate blocking point processing apparatus, comprising a sliding rail positioning tooling (2) arranged on a support member of a base (1), wherein the sliding rail positioning tooling (2) has a U-shaped press-fit support column (4); a punching mechanism comprising a guiding column (5) longitudinally arranged on the base (1) and a mounting rack (6) movably arranged on the guiding column (5) is arranged above the sliding rail positioning tooling (2); the mounting rack (6) is connected to an output end of a punching cylinder (7), and a fixing plate (8) extending longitudinally is arranged on the mounting rack (6); a gas spring (9) is arranged movably in the longitudinal direction on the fixing plate (8) ; an output end of the gas spring (9) is mounted with an n-shaped limiting bracket (11); a pair of swing arms (12) are arranged on the limiting bracket (11); upper ends of the swing arms (12) are rotatably connected to the middle of the limiting bracket (11), a press-fit head (13) is mounted on an inner side of a lower end of the swing arm (12), an outlet (14) for the press-fit head is correspondingly provided in the limiting bracket (11), one end of a connecting rod (15) is rotatably connected to an outer side of the lower end of the swing arm (12), and the other end of the connecting rod (15) is rotatably connected to the fixing plate (8); and a pressing rod (16) is longitudinally arranged on the limiting bracket (11), and the pressing rod (16) is located between the pair of swing arms (12).
Answer: B