Please select the most similar patent number from A, B, C and D. Which number is?
Disclosed is an integrated automatic unfolding/folding stair-climbing trolley suitcase, comprising a case body. The bottom of the case body is provided with universal wheels; a telescopic pull rod is provided on one side of the case body; the bottom of a slide plate is provided with a one-way wheel; an inner support is separately connected to the telescopic pull rod and the case body; limiting connecting rods on left and right sides are movably connected to the inner support by means of a first connecting rod and are movably connected to the slide plate by means of a second connecting rod; torsion spring connecting rods on the left and right sides are movably connected to the inner support by means of a third connecting rod and are movably connected to the slide plate by means of a fourth connecting rod; a double rocker mechanism is formed between the limiting connecting rods, the case body, the torsion spring connecting rods, and the slide plate; an elastic device has one end connected to the inner support and the other end connected to the fourth connecting rod; and a shock absorbing device is provided between the slide plate and the inner support. In the present invention, the slide plate can be automatic unfolded or folded to assist climbing stairs, and has shock absorbing and cushioning devices, thereby not only preventing damage to the case body itself or the fragile items therein, but also greatly reducing the noise and vibration produced during climbing stairs.
A: Disclosed in the present utility model is a textile scrap recycling device for textiles. The textile scrap recycling device comprises a crushing box body. The bottom part of the crushing box body is connected to a shock-absorbing plate. A shock-absorbing spring is disposed at the interior of the shock-absorbing plate. A placement plate is connected to the bottom part of the shock-absorbing plate. One side of an inner wall of the placement plate is provided with a friction plate. A drive motor is mounted at the bottom part of an inner wall of the crushing box body, and an output end of the drive motor is connected to a first rotating shaft. An outer wall of the first rotating shaft is connected to a stirring rod. An outer wall of the placement plate is connected to a water tank, and an inner wall of the water tank is connected to a pipe. One end of the pipe is connected to a water pump, and the other end of the pipe passes through the crushing box body. When the textile scrap recycling device for textiles is operated, by means of configuring the placement plate, the shock-absorbing plate disposed at the bottom part of the placement plate reduces the vibration generated by the crushing box body, and the friction plates on both sides reduce the friction from the shaking of the crushing box body on the placement plate, thereby increasing the service life of the device and meeting the usage requirements of individuals.
B: The present invention relates to a luggage case with a charging device, comprising a case body, a trolley handle frame mounted on the case body, and a travelling wheel mechanism mounted at the bottom of the case body. The trolley handle frame is provided with telescopic trolley handle used for dragging the case body; the trolley handle frame is provided with a charger accommodating cavity located in the middle of the trolley handle and used for placing a charging device; the upper part of the charger accommodating cavity is provided with an opening; sliding slots are provided at two sides of the opening; sliding covers used for covering the opening are slidably mounted in the sliding slots. In t present invention, the independent storage of the external charging device facilitates taking the charging device at any time, and the configuration of the sliding covers makes the charging device not easily fall off; by configuring a spring, the charging device can be popped out; moreover, the charger accommodating cavity can be adapted to charging devices of different specifications; the specification of the charging device is in direct proportion to the compression deformation of the spring; the larger the charging device, the larger extent the spring is compressed to, and the smaller the charging device, the smaller extent the spring is compressed to.
C: Disclosed is an injection mold with a buffering protection function, the injection mold comprising a base. A second air cylinder is fixedly installed at the middle end of the top of the base, and supporting plates are fixedly installed at both the left and right ends of the top of the base; a fixed plate is fixedly installed at the tops of the supporting plates; a sliding plate is fixedly installed at the top of the second air cylinder; and a box is fixedly installed at the top of the sliding plate. The sliding plate is driven by the second air cylinder to move upwards, the sliding plate drives the box to move upwards while the sliding plate moving upwards, and injection-molded materials fall into an inner cavity of a material receiving box; and at this time, a first spring deforms due to the influence of force, the first spring drives a connecting rod to press downwards while the first spring is compressed downwards, the connecting rod drives a sliding sleeve to slide to the outside, and the sliding sleeve compresses a second spring while the sliding sleeve is sliding, such that damping and buffering effects are achieved, the materials are prevented from being broken after a fall, and the problem of an existing injection mold having no buffering protection function and being inconvenient for people to use is solved.
D: A carrying frame of a testing wave recorder used for a wind power generator, comprising a casing (1), an accommodating cavity (102) being provided in the casing (1), a first pressing plate (2) being connected to the bottom wall of the accommodating cavity (102), a first connecting rod (203) being fixedly connected to the bottom of the first pressing plate (2), the first connecting rod (203) being connected to two symmetrical second connecting rods (205) by means of a pin shaft, the second connecting rods (205) being rotatably connected to the inner wall of the casing (1) by means of first supporting seats (2051), one end of each second connecting rod (205) away from the first connecting rod (203) being connected to a third connecting rod (206) by means of a pin shaft, the upper end of the third connecting rod (206) being connected to a first air pressure mechanism, an output end of the first air pressure mechanism being connected to a fourth connecting rod (304), the upper end of the fourth connecting rod (304) being connected to a fifth connecting rod (306) by means of a pin shaft, the fifth connecting rod (306) being rotatably connected to the inner wall of the casing (1) by means of a second supporting seat (3061), and the other end of the fifth connecting rod (306) being connected to a second air pressing mechanism. The carrying frame has a good fixing effect for the wave recorder, thereby avoiding damage to internal parts of the wave recorder during carrying.
Answer: B