48results about How to "Increase support height" patented technology

A device is described for the frontal termination of a floating-laid floor covering (3) having a terminus profile (4) and having a fastener fitting (5) for the terminus profile (4) resting on a subfloor (2). To provide advantageous design conditions, it is suggested that the fastener fitting (5) be connected in a shear-resistant manner to the floor covering (3) and have a rest (8) for the terminus profile (4) butt-jointed on the front face (1) of the floor covering (3).

The invention discloses a flexible shield support capable of fitting in with variation in thickness of a coal seam. A telescopic support leg is installed on a normal flexible shield support and connected with the flexible shield support through a screw rod. When the thickness of the coal seam changes, the extending length of the telescopic support leg is adjusted through the screw rod and the supporting range of the support is changed. Therefore, the support can fit in with a certain range of variation in thickness of the coal seam.

An improved pole frame structure of a foldable tent includes upright poles, side cross support rod assemblies, and a top support rod unit. The top support rod unit includes a top module provided with a limiting component, top support rod assemblies, and oblique support rods. One end of each oblique support rod is connected to the respective top support rod assembly by means of a slider provided with a stopper, and the other end of the oblique support rod is pivotally connected to the respective side cross support rod assembly. The structure enhances, by means of the stopper and the limiting component, the stability of the oblique support rods supporting tent cloth, and prevents the tent cloth from being damaged by the oblique support rods.

The invention relates to the technical field of tunnel engineering equipment, and discloses an anti-collapse device for expressway tunnel engineering. The anti-collapse device comprises a web plate and a supporting rod, wherein two wing plates are symmetrically and fixedly connected to the upper end of the web plate; grouting notches are formed in the edges of the upper ends of the two wing plates; a supporting plate is fixedly connected to the center of the lower end of the web plate; two transverse rods are fixedly connected to the lower end of the supporting plate; two first steel molds are arranged at the lower end of the web plate; two transverse pipes are fixedly connected to the opposite sides of the two first steel molds; the two transverse pipes are in sliding sleeve connection with the rod walls of the two transverse rods correspondingly; and first hydraulic cylinders are fixedly connected to the two opposite sides of the supporting plate. The anti-collapse device for expressway tunnel engineering can conveniently move in a tunnel, along with the excavation speed of the tunnel, a support is continuously disassembled and assembled, the tunnel construction speed is increased, concrete formed through pouring has an arch rib structure, and the strength of the anti-collapse structure of the tunnel is greatly improved.

The invention provides an accessory support device and relates to the technical field of accessory support device for poles. The accessory support device comprises a device body, wherein the device body comprises a first fixation device, a second fixation device, a stent device and a regulating means, the first fixation device comprises two first joint frames, the second fixation device comprisestwo second fixation devices, the outer surfaces of the first joint frames and the second fixation devices are fixedly connected with four restraint rings respectively, and the two restraint rings positioned on the same vertical surfaces are movably connected via support bars. Because the accessory support device arranges the first fixation device, the second fixation device, an installation device, a fixed plate, a joint column, a joint ring, a block and rubber balls, the assembling and disassembling of the first fixation device and the second fixation device is convenient and rapid, the timeof workers is saved, and the practicality is relatively high without fixedly welding.

The invention discloses a multi-layer low-altitude anti-sideslip supporting cushion box and a using method thereof, wherein the multi-layer low-altitude anti-sideslip supporting cushion box comprises a plurality of supporting cushion box bodies which are stacked, and every two adjacent supporting cushion boxes are detachably connected. According to the multi-layer stacked supporting cushion box, the supporting height of the cushion box can be increased according to needs, the problem that the closure period of a cast-in-place steel arch bridge conflicts with the construction period of a ballastless track bed of a simply-supported box girder bridge deck is solved through a temporary span box girder erected by the multi-layer low-altitude anti-sideslip supporting cushion box in advance, and the later-stage tensioning operation of the end of the cast-in-place steel arch bridge is not affected; a beam body can be jacked (descended) directionally in a limited working space by increasing (decreasing) the number of layers of the low-altitude anti-sideslip cushion box, working is facilitated, the self weight of the cushion box is reduced through the supporting cushion box of the cavity structure, and construction operation in the limited field space is facilitated; and meanwhile, a top beam oil jack needs to be matched for carrying out quantitative jacking (descending) cross switching operation, so that the temporary-span box girder descends to the designed elevation.

The invention provides a marble precision workbench air floatation jacking mechanism and relates to the field of jacking mechanisms. The marble precision workbench air floatation jacking mechanism comprises a cylinder body; a top cover is fixedly connected to the upper end of the cylinder body; a marble platform is fixedly connected to the upper end of the top cover; a piston is fixedly connected to the interior of the cylinder body; the piston is in the shape of a three-section stepped cylinder, and the interior of the piston is hollow; the lower end of the piston is fixedly connected with an air floating cushion; a cavity between the cylinder body and the piston forms a first air chamber; a spring is arranged in the first air chamber; the side wall of the cylinder body is fixedly connected with a first connecting port; a cavity in the top cover and above the piston forms a second air chamber; and the side wall of the top cover is fixedly connected with a second connecting port. The second air chamber is arranged, air is pumped in through the second connecting port, jacking of the mechanism is achieved, maintenance of the device is facilitated, meanwhile, the first air chamber is arranged and matched with the spring, and resetting of the mechanism is achieved.

The invention provides a double-sided maintenance display screen convenient to disassemble and assemble and relates to the technical field of double-sided display screens. The double-sided maintenancedisplay screen convenient to disassemble and assemble comprises an outer frame and connecting assemblies, wherein the two connecting assemblies are correspondingly fixed to the left side and the right side of the rear portion of the outer frame through screws. Support pieces are arranged on the edges of the left side and the right side of the lower end of the outer frame through vertical calcining. Each support piece comprises a transverse plate and a rotating shaft. The transverse plates are located at the tail ends of the inner walls of the support pieces, the rotating shafts penetrate through the positions, connected with the support pieces, of the transverse plates from front to back, and the transverse plates are rotationally connected with the support pieces through rotating shafts.Each connecting assembly comprises an inner rod, a connecting plate, a first semicircular sleeve and a second semicircular sleeve, wherein each inner rod is embedded in the corresponding connecting assembly, and the diameter of each inner rod is smaller than the diameter of each connecting assembly. The double-sided maintenance display screen convenient to disassemble and assemble has the beneficial effects that the disassembling and assembling convenience is improved, the requirement on single-side and double-side random switching of a user is met, and the integral fixing performance of thedisplay screen is enhanced.