5results about How to "Limit height" patented technology

The utility model relates to electric flame range technical field, concretely relates to a kind of probe structure of electric flame disc: including installation base, spring piece, installation cylinder and probe body, since installation base is welded on the bottom shell of electric flame disc, make structure stable, since installation cylinder is slidably arranged in installation base, and the elastic adjustment of probe body is realized by spring piece, effectively limit pot bottom height, prevent pot bottom directly cover nozzle, guarantee flame distribution uniform and heating efficiency, and probe body is big in upper and small in lower structure, cooperate with the taper gradual change section in installation cylinder, complete the installation of probe body, and by the setting of probe body, pot bottom temperature change can be detected in real time, by the detection of temperature change, it is convenient to realize the accurate regulation and control of temperature in each stage of cooking, also play the role of preventing dry burning, using the above structure, effectively solve the problem of single function of existing probe structure.

The present invention discloses a cement concrete bored pile head cutting device, which relates to the technical field of cutting devices, including two groups of fixing parts, and also including: a hoop structure, which is arranged on the fixing part and used to fix the cutting device on the cement concrete bored pile; a ring cutting component, which is arranged on the hoop structure and used to automatically cut the cement concrete bored pile; wherein, the hoop structure includes steel sheets, which are installed on both sides of the fixing part, and two adjacent groups of steel sheets are connected by bolts, and both sides of the fixing part are provided with a first slide groove, and the inner wall of the first slide groove is slidably matched with a slider; wherein, the ring cutting component includes a movable plate, which is sleeved on the inside of the slider, and a circular ring frame is installed on the top of the movable plate. Through the cooperation between the steel sheet and the bolt, the fixing part can be fixed on cement concrete bored piles of different diameters. Compared with the method of placing the frame on the ground, the method of fixing it on the cement concrete bored pile by the hoop is more stable.

This invention relates to the field of highway paving technology and discloses a convenient highway and bridge paving construction device, including a support frame. Support frames are slidably connected to both ends of the outer wall of the support frame, and a lead screw is meshed with the top of the support frame. This invention addresses the problem of excessive damage to the concrete surface caused by a large difference in the moving speed between the bidirectional auger and the support frame when the equipment needs to retract. The device includes a moving mechanism and a sliding mechanism. When the equipment needs to retract, a motor drives a gear to rotate clockwise. The clockwise rotating gear drives a rack to slide upwards along the outer wall of a fixed track. The rack drives the U-shaped frame to move upwards synchronously, and also drives the sliding block and the bidirectional auger to slide upwards. This allows the bidirectional auger to be lifted when the equipment retracts, moving it away from the outer surface of the concrete and effectively preventing excessive wear on the outer wall of the concrete surface during retraction.

The utility model discloses a fire vehicle rolling slats door with hovering mechanism, include: fixed frame, rolling slats door body, fixed component and hovering subassembly, and the rolling slats door body sets up at the back of fixed frame, and fixed component includes the winding shaft of setting at the top of rolling slats door body, and the connecting place of winding shaft and fixed frame is provided with fixed part. The utility model discloses through the design of ratchet wheel, gap, pawl, springback piece and limiting piece, when in the opening of rolling slats door body, moving upwards to the rolling slats door body, first through the winding shaft drive ratchet wheel and rotate, pawl is pushed by the gap at this time, and the end of pawl does not contact with ratchet wheel, when needing the bottom of rolling slats door body and hover in a position, first make pawl be located at the position of gap, then pull down rolling slats door body, make pawl insert ratchet wheel, limit rolling slats door body and move upwards through ratchet wheel to the height of limiting door opening, avoid the situation of unable to close rolling slats door.

The utility model belongs to the technical field of machine tools, and particularly relates to a CNC (computer numerical control) milling machine lifting mechanism which comprises a mounting base, a lifting mechanism arranged on the upper surface of the mounting base, an operating table arranged at the top end of the lifting mechanism, a plurality of first sleeves uniformly and vertically arranged on the side edge of the lower surface of the operating table, and guide rods slidably arranged in the first sleeves. The bottom ends of the guide rods are fixedly connected with the mounting base, a limiting device is arranged between at least one guide rod and the first sleeve, and the limiting device comprises a pressing rod and a pressing mechanism which are detachably arranged at the bottom ends of the sleeves. Due to the arrangement of the limiting device, when the operation table suddenly descends, the falling stopping effect can be achieved, danger caused by falling of the operation table can be prevented, meanwhile, the distance between the pressing piece and the guide rod and the extending distance of the first screw rod can be accurately set, and the effect of limiting the height of the operation table is achieved.