30results about How to "Guaranteed load-bearing strength" patented technology

The invention discloses a method for mounting a sliding door leaf and hanging wheels. The method comprises the steps that the hanging wheels are mounted in a guide rail, and the hanging wheels are connected with hanging wheel mounting blocks through connecting rods; an upper frame profile, a side edge profile, a lower frame profile and glass of the sliding door leaf are assembled; two hanging wheel bearing grooves are correspondingly fixed to the left end and the right end of the upper frame profile of the sliding door leaf through bolts on the assembled sliding door leaf, and openings of the hanging wheel bearing grooves are outward; the sliding door leaf with the hanging wheel bearing grooves is lifted up, the hanging wheels are moved, the hanging wheel mounting blocks on the left hanging wheel and the right hanging wheel are correspondingly inserted into the hanging wheel bearing grooves from the opening ends of the hanging wheel bearing grooves till the hanging wheel mounting blocks abut against the closed ends of the hanging wheel bearing grooves and cannot move; and expansion fixing blocks are inserted into the hanging wheel bearing grooves, and bolts on the expansion fixing blocks are screwed for expanding the expansion fixing blocks so that the expansion fixing blocks can be fastened into the hanging wheel bearing grooves. By the adoption of the method, the aesthetic degree of a sliding door can be increased, the mounting reliability of the sliding door can be improved, and meanwhile disassembly and overhaul are facilitated.

The invention discloses a combined paper pallet. The paper pallet comprises an upper bearing plate, a lower base plate and a plurality of stilts connected between the bearing plate and the base plate, wherein each stilt comprises a cuboid paper box bushing; a bearing body and at least a horizontally arranged connecting paper tube are clamped in the paper box bushing; the bearing body can bear heavy paper; and the bearing plate and the base plate are connected with the sides of the connecting paper tubes of the stilts by tapping screws. The paper pallet can be freely combined and assembled, occupies small space during storage and transport, can save the storage and transport costs and has high bearing strength.

The invention discloses an installation structure of multiple sliding doors. The installation structure of the multiple sliding doors comprises guiderails, hanging wheels and door leaf structures of the sliding doors, and further comprises a sub-frame mechanism. The sub-frame mechanism comprises a sub-frame body, the sub-frame body comprises a top plate, a left-right side plate; the guiderails are mounted in the sub-frame body, the side plate of the sub-frame body expands downwards to form baffles, the hanging wheels are arranged in the guiderails, and hanging wheel mounting blocks used for fixing the sliding doors are arranged downwards from the hanging wheels; hanging wheel weight-bearing grooves are formed in the upper end face of an upper frame body profile of the sliding door leaves, and weight-bearing groove baffles are arranged at the front side and the back side of the hanging wheel weight-bearing grooves; one side of each hanging wheel weight-bearing groove is open, and the other side of the hanging wheel bearing groove is closed; and the hanging wheel mounting blocks are inserted into the hanging wheel bearing grooves from the openings of the hanging wheel bearing grooves. By arranging the sub-frame structure, the decoration efficiency can be improved, the probability of the sliding doors damaged or polluted can be reduced, therefore the integral sliding doors are more attractive; by arranging the hanging wheel weight-bearing grooves, the clearances between the door frames and the guiderails are reduced, therefore the aesthetic degree is improved; and the door frames are connected with one another through angle combining machines and screws, and accordingly the strength of the sliding doors is improved.

The invention provides an existing concrete continuous core taking apparatus. The apparatus comprises a concrete core taking machine (1), a support and a height adjusting sleeve (5), the machine head of the concrete core taking machine (1) is provided with a core taking drill bit (2), a rack guide rail (3) is sleeved on the machine body of the concrete core taking machine (1), the support comprises a column (4), the height adjusting sleeve (5) is fixedly connected with the column (4) through an adjusting bolt, and the height adjusting sleeve (5) is fixedly connected with one end of the rack guide rail (3). The apparatus has the advantages of convenient operation, high core taking efficiency, small labor intensity of workers, and realization of continuous core taking without repeated installation.

The invention discloses a teacher demonstration platform used in a chemistry lab. The teacher demonstration platform is provided with a plurality of U-shaped supports, whose openings are towards to the internal side of the demonstration platform; any two neighbored supports are connected through two upper crossbeams so as to form a demonstration platform frame; a platform surface is fixed on the demonstration platform frame and connected to an upper crossbeam and an upper carling; a hollow instrument cabinet is inserted from the front end of the demonstration platform and abuts against the strengthening beam of each U-shaped support; a backboard is fixed on the rear end of the demonstration platform and is hinged to each upper crossbeam; and the demonstration platform frame between the hollow instrument cabinet and the backboard forms an installation channel. The installation channel and the hollow instrument cabinet are separated in the teacher demonstration platform so as to avoid the phenomenon that circuits and water channels are exposed out of the demonstration platform, and thus the appearance of the demonstration platform is beautiful. At the same time, the backboard is hinged on the upper crossbeams, and thus the installation, exchange, and maintenance of the circuits and water channels are convenient.

The invention discloses a teacher demonstration bench in a physical laboratory, the opening of several U-shaped supports orientates to the inner side of the demonstration bench, adjacent two U-shaped supports at will are passed through more than two upper cross beams and are connected to a frame of the experiment table in order, a table surface is fixed on a frame of the demonstration bench, a hollow apparatus cabinet inserts from the front end of the frame of the demonstration bench, a backboard is fixed at the rear end of the frame of the demonstration bench, the frame of the demonstration bench between the hollow apparatus cabinet and the backboard forms an electrical installation channel, and a control table is arranged on the table surface and is connected to the power supply in the electrical installation channel. The teacher demonstration bench can realize the separation of the electrical installation channel and the hollow apparatus cabinet, the exposure of the wire outside the demonstration bench can be avoided, and the external beauty of the demonstration bench can be realized; the backboard is hinged to the upper cross beam simultaneously, so that the convenience for electrical installation, electrical heat radiation and electrical maintenance are realized.

The invention relates to an oil tank for a leak test. The oil tank for the leak test comprises a square hollow tank body with an opening at the upper end, wherein the tank body is provided with a cavity for containing liquid, and the oil tank is characterized by further comprising an air pipe fixing frame which can be erected at the upper end of the tank body. The air pipe fixing frame comprises a plate-shaped body and four supporting plates, wherein the supporting plates are evenly arranged in the circumferential direction of the body and respectively and transversely extend outwards. An air pipe fixing hole is formed in the middle of the body, a turnup is vertically arranged at the free end of each supporting plate, and when the air pipe fixing frame is erected at the upper end of the tank body, the turnup of each supporting plate is tightly attached to the side wall of the tank body. According to the oil tank for the leak test, the air pipe fixing frame is additionally arranged on the basis of a traditional oil tank structure, convenience is brought to clamp an air pipe and keep the air pipe stable in the process of the leak test, manual holding is not required, labor is greatly saved, efficiency is improved, the oil tank for the leak test is convenient to use, and accuracy of the test is improved. The four supporting plates of the air pipe fixing frame ensure load bearing strength, especially the turnup of each supporting plate prevents the air pipe fixing frame from transversely or longitudinally moving at the top end of the tank body, and the air pipe is caused to be unstable by transverse or longitudinal movement.

The invention discloses a mounting method of sliding doors. The mounting method of the sliding doors includes the following steps of mounting a sub-frame on a cross beam before decorating the ceiling; mounting guide rails corresponding to a plurality of sliding doors on the sub-frame; mounting hanging wheels in the guide rails; assembling an upper frame profile, a side profile, a bottom side profile of each sliding door leaf and glasses, and fixing a hanging wheel loading groove to the upper frame profile of an upward-sliding door leaf; fixing each sliding door leaf with each hanging wheel; mounting a hanging wheel mounting block from the opening of the hanging wheel loading groove which is arranged on the upper frame profile of each sliding door leaf, inserting an expansion block in the hanging wheel loading groove to clamp the hanging wheel mounting block after the hanging wheel mounting block is put in the hanging wheel loading groove; and mounting a door bottom limit linkage mechanism on each sliding door, specifically, connecting the bottom side profiles of every two sliding doors with each other through connecting pieces after fixing each sliding door leaf and each hanging wheel well. The mounting method of the sliding doors can reduce the construction difficulty effectively, meanwhile improve the safety and stability of the sliding doors, and improve the aesthetics of the sliding doors.

The invention provides an assembled composite floor slab and a construction method thereof, which relate to the technical field of building construction and include a frame, a profiled steel plate, a second concrete layer, a light insulation layer, a first concrete layer and several trusses; the frame is rectangular frame, and a supporting plate is provided at the lower end; several trusses are arranged parallel to each other inside the light insulation layer and the first concrete layer. The prefabricated composite floor slab provided by the present invention adopts several trusses arranged in parallel in the frame as the skeleton of the floor slab, combined with the setting of the second concrete layer, profiled steel plate and the first concrete layer to effectively ensure the load-bearing strength, suitable for Used as a load-bearing floor, the lightweight insulation layer is set between the first concrete layer and the profiled steel plate, which ensures good insulation performance, achieves a good energy-saving effect, and effectively reduces the overall weight of the floor. The use can realize the rapid installation of the floor slab during the construction process, which is convenient for improving the construction efficiency.

The invention discloses a method for mounting a sliding door leaf and hanging wheels. The method comprises the steps that the hanging wheels are mounted in a guide rail, and the hanging wheels are connected with hanging wheel mounting blocks through connecting rods; an upper frame profile, a side edge profile, a lower frame profile and glass of the sliding door leaf are assembled; two hanging wheel bearing grooves are correspondingly fixed to the left end and the right end of the upper frame profile of the sliding door leaf through bolts on the assembled sliding door leaf, and openings of the hanging wheel bearing grooves are outward; the sliding door leaf with the hanging wheel bearing grooves is lifted up, the hanging wheels are moved, the hanging wheel mounting blocks on the left hanging wheel and the right hanging wheel are correspondingly inserted into the hanging wheel bearing grooves from the opening ends of the hanging wheel bearing grooves till the hanging wheel mounting blocks abut against the closed ends of the hanging wheel bearing grooves and cannot move; and expansion fixing blocks are inserted into the hanging wheel bearing grooves, and bolts on the expansion fixing blocks are screwed for expanding the expansion fixing blocks so that the expansion fixing blocks can be fastened into the hanging wheel bearing grooves. By the adoption of the method, the aesthetic degree of a sliding door can be increased, the mounting reliability of the sliding door can be improved, and meanwhile disassembly and overhaul are facilitated.