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The invention discloses an overturn supporting mechanism. The overturn supporting mechanism comprises vertical beams, overturn clamping jaws and linkage mechanism strips. Each overturn clamping jaw comprises a supporting strip, a counterweight plate and a round corner ring. Each counterweight plate is connected to the back end of the corresponding supporting strip through a bent plate. A set of rotating cylinders are symmetrically arranged on the two sides of the back end of each supporting strip. Each round corner ring is arranged on the lower side of the back end of the corresponding supporting strip. A pin hole is formed in the joint of each bent plate and the corresponding counterweight plate. The number of the vertical beams is one set. Each vertical beam is sequentially provided with the multiple overturn clamping jaws from bottom to top. The inner wall of each vertical beam is sequentially provided with a plurality of installation holes which rotate with the rotating cylinders in a matched mode from bottom to top. The pin hole of each overturn clamping jaw is matched with a pin shaft. Each linkage mechanism strip is connected between every two adjacent overturn clamping jaws. The upper end of each linkage mechanism strip is provided with a long groove hole. The lower end of each linkage mechanism strip is provided with a short groove hole. The pin shaft of the overturn clamping jaw at the lowest end is rotationally matched with the short groove hole of the corresponding linkage mechanism strip. According to the overturn supporting mechanism, the structure is simple, the occupied space is small, and storing and taking of products are convenient.

The invention relates to the technical field of fire-fighting equipment boxes, and discloses a multifunctional adjustable fire-fighting equipment box. The equipment box comprises a box body with an opening in one side; a moving groove is formed in the inner wall of the bottom of the box body; a moving block is slidably mounted in the moving groove; a limiting hole is formed in the moving block; alimiting rod is slidably mounted in the limiting hole; two ends of the limiting rod are fixedly connected with the inner walls of corresponding sides of the moving groove respectively; the top end ofthe moving block extends into the box body and is fixedly provided with a baffle; a plurality of containing plates are fixedly installed on one side of the baffle; a plurality of containing grooves are formed in the tops of the containing plates; illuminating lamps are fixedly installed on the inner wall of the top of the box body; mounting rods are fixedly mounted at the ends, away from the baffle, of the plurality of containing plates; and a sealing plate is slidably mounted on one side of the box body. Fire-fighting equipment in the box body can be rapidly and conveniently taken and stored,people can conveniently and rapidly find the fire-fighting equipment, the flexibility is high, and the use requirement is met.

The invention provides a lifting and folding type kitchen cabinet based on connecting rod transmission, and relates to the technical field of household cabinets. The lifting and folding type kitchen cabinet based on connecting rod transmission comprises a cabinet body, wherein a cooking bench is fixedly installed at the top end of the cabinet body, a drawer is slidably connected to the top part ofthe left side of the cabinet body, a placement box is slidably connected to the top part of the cabinet body, sliding blocks are slidably connected to the upper portion of the drawer in the cabinet body, springs are fixedly connected between the sliding blocks, and cross rods are in transmission connection between the sliding blocks and the placing box. According to the lifting and folding type kitchen cabinet based on connecting rod transmission comprises, when articles in the placement box need to be used, the placement box can be pulled up and unfolded in a straight descending mode, article taking and storing are convenient, more time and labor are saved, the articles can be stably limited, and the articles are prevented from falling and being broken; and when the articles are not used, the placement box can move downwards to be kept horizontal with the cabinet body, the working area during cooking is increased, and cooking is facilitated.

The invention discloses a circuit assisted learning device and relates to the field of circuit learning devices. The circuit assisted learning device comprises a carried-about box and is characterized in that the carried-about box is provided with a white board slot, a magnetic white board is arranged in the white board slot, a cavity is formed in one side of the white board slot, a motor is fixed in the cavity, the motor is connected with a lead screw, a sliding block is arranged on the lead screw, and one side of the sliding block is connected with a strip-shaped white board eraser. The strip-shaped white board eraser is arranged on the upper surface of the magnetic white board, a symmetrical hinge block is arranged at one end of the carried-about box, a hinge rod is connected in the hinge block, and a second cover plate is hinged to the hinge rod and is hinged with a first cover plate. The circuit assisted learning device brings convenience to a student for circuit learning any time anywhere.

The invention relates to the technical field of transporting devices, in particular to a transporting device for rolling wheel production, and provides the following scheme for solving the problem that in the prior art, rolling wheels are prone to being damaged in the transferring process: the transporting device comprises a bottom plate, multiple sets of trundles are fixedly connected to the bottom of the bottom plate, and a mounting opening is formed in the top of the bottom plate; and a damping plate is movably mounted in the mounting opening, a plurality of sets of first springs are fixedly connected to the bottom of the damping plate, the bottoms of the multiple sets of first springs are fixedly connected with the top of the inner side of the mounting opening, a shell is fixedly connected to the top of the damping plate, and a plurality of operation openings are formed in the outer portion of the shell. The transporting device is reasonable in structure and easy to operate, rolling wheels are transported, separated storage and clamping of the rolling wheels are achieved, it is effectively guaranteed that the rolling wheels cannot collide in the transporting process, then the rolling wheels are prevented from being damaged, conveying of the rolling wheels is facilitated, and application and popularization are facilitated.