6results about How to "Simple support" patented technology

The present invention relates to the technical field of bridge construction, and in particular to an upward self-propelled mobile formwork for bridge construction and a bidirectional construction method. The upward self-propelled mobile formwork for bridge construction includes a main frame, legs, a hanging system, a transverse mechanism, a template system, a hydraulic system, an electrical system, an anchoring system and a counterweight; the bidirectional construction method includes the steps of assembling the mobile formwork, standard operations and reverse construction, and after the installation of the mobile formwork is completed, the horizontality and force balance of the mobile formwork are detected, and the height of the main beam lifted by the hydraulic device of the first leg and the second leg and the actual pressure on the first leg and the second leg are adjusted. The present invention shortens the construction period, reduces machinery investment, reduces costs and improves construction quality by quickly performing reverse operations during bridge construction.

The invention relates to a guide system (5) for guiding at least one movably mounted door leaf (3a, 3b) along a furniture wall (13a), comprising:-a first guide rail (12a) to be fastened to the furniture wall (13a),-at least one second guide rail (12b) to be fastened to the furniture wall (13a) and having a vertical distance (6) from the first guide rail (12a), the invention relates to a door system (1), comprising:-at least one door leaf (3a, 3b),-a support (11) for pivotably supporting the at least one door leaf (3a, 3b),-at least one first guide device (19a), by means of which the support (11) is movably supported along a first guide rail (12a),-at least one second guide device (19b), by means of which the support (11) is movably supported along a second guide rail (12b), a cable traction device (15) for compensating the tilting moment (16) of the carrier (11) about the tilting axis (17) by means of a restoring moment (18), the cable traction device (15) comprising at least one, preferably exactly one cable (15a), the cable (15a) being guided crosswise by at least two guide wheels (24a, 24b) arranged on the two guide devices (19a, 19b) and / or on the at least one carrier (11).

The utility model discloses a layered support structure in a pit-in-pit construction process in the technical field of pit-in-pit, which comprises a pit-in-pit, a side support baffle, a reinforcing enclosing purlin and a support rod, the side wall of the pit-in-pit is enclosed by the side support baffle, the side support baffle is reinforced and supported by the reinforcing enclosing purlin, and the support rod is arranged on the side wall of the pit-in-pit. The reinforcing enclosing purlins are oppositely supported and abut against each other through the supporting rods, it is ensured that the side supporting baffles are stably supported in the pit, the soil layer wall of the pit in the pit which is being excavated can be effectively supported through the side supporting baffles, the side supporting baffles can be continuously spliced, and therefore the pit in the pit is effectively supported; the flexible supporting mode of the device for the stratum can deal with the situation that the soil layer of the pit-in-pit is prone to deformation, reinforcement can be conducted on the failure of an original supporting structure of the pit-in-pit, waiting for concrete condensation is not needed, the supporting construction speed is high, the effect taking speed is high, and the excavation process of the pit-in-pit is safer.

The invention discloses a large-dip-angle and steeply-inclined subsection mechanical mining method, and particularly relates to the technical field of coal mining, which comprises the following steps of: 1, arranging a mining face transportation roadway and a mining face air return roadway along a coal seam dip angle (coal seam gradient), arranging the mining face transportation roadway and the mining face air return roadway at two ends of a coal seam trend of an ore boundary, and arranging the mining face transportation roadway and the mining face air return roadway at two ends of the coal seam trend; a section is designed every 75 meters, a main transportation roadway is located in a lower coal seam bottom plate and a cross-cut of the section and communicated with a mining face transportation roadway, a main air return roadway is located in an upper coal seam bottom plate and a cross-cut of the section and communicated with a mining face air return roadway, a working face is arranged in the coal seam trend, and mining is conducted downwards along the coal seam inclination angle. The transportation roadway is arranged along the inclination angle, equivalently, the open-off cut, the transportation roadway and the return roadway of an existing coal face are tunneled from top to bottom, the trend transportation roadway of an existing mining method is not needed, the process is simple, the working face is long, the tunneling amount is small, roadway supporting is safe and reliable, and mining face gas control is easy.

The application discloses a recyclable prestressed anchor cable, which comprises an anchor cable assembly, a support and a connecting assembly, the anchor cable assembly comprises a steel strand and a recycling cable, the steel strand comprises a free section and an anchoring section which are arranged separately, the support is provided with a grouting hole and a mounting hole, the connecting assembly comprises a connecting part and a first clamping part in a conical shape, the connecting part is embedded in the mounting hole, the connecting part is formed with an inner cavity, the inner cavity comprises a first end and a second end which are arranged oppositely, the free section is mounted at the first end, the second end is arranged in a tapering manner along a first direction, the first clamping part is sleeved on the anchoring section and embedded in the second end, and one end of the recycling cable extends into the inner cavity and is connected with the first clamping part along the first direction. The recyclable prestressed anchor cable can be used for supporting the side slope, the inner wall of a foundation pit, a mine and the like, the supporting and recycling principle is simple, the recyclable prestressed anchor cable is easy to manufacture, the structure is simple, the recyclable prestressed anchor cable is convenient to operate, easy to recycle, can be recycled for many times, and the use value of the anchor cable is improved.

The invention relates to an electromechanical drum brake (10) for a motor vehicle. The electromechanical drum brake (10) comprises brake shoes (14) and an adjusting device (18) arranged between the brake shoes (14) and driven by a drive unit (38), by means of which adjusting device the brake shoes (14) can be expanded for braking. According to the invention, the adjusting device (18) is fixed to a rear wall (22) of the drum brake (10), the rear wall (22) being designed to be resilient such that it allows a movement at least in the range of expected out-of-roundness and eccentricity.