11results about How to "Reliable structural connection" patented technology

The invention provides a horizontal sliding bearing test bed, which belongs to the field of sliding bearing safety operation and detection and comprises a main transmission system, a driving system, a radial loading system, a heating system and a hydraulic system. A sliding bearing seat in the radial loading system is inversely fixed on a lower loading plate and is detachably sleeved and fixed on a test bearing, and a test bed applies pressure to the lower loading plate through a hydraulic cylinder to apply radial load to a test sliding bearing. A rotary swing hydraulic oil cylinder in the main transmission system provides power to test the horizontal sliding bearing. The hydraulic system is connected with the rotary swing hydraulic oil cylinder and the radial loading oil cylinder and can achieve closed-loop control over torque and radial loading force. The heating system simulates a high-temperature working condition through a heating box, and a test bearing can be set to be tested at a specific high temperature. According to the invention, large load detection can be realized, working condition simulation is accurate, data such as bearing working torque and service life can be detected, and comprehensive and multi-size adaptability is realized.

The invention provides a shell assembly structure. The shell assembly structure comprises a shell, a cover body, a first side shell, a light guide piece and a second side shell. The cover body is arranged at the opening of the machine shell and is connected with the machine shell through a first fastener. The first buckling part of the first side shell is buckled to the machine shell, the second buckling part of the first side shell is buckled to the cover body, and a part of the first fastener is shielded by the first side shell. The light guide part is fixed to the cover body through a second fastener, and the second fastener sequentially penetrates through the cover body and the light guide part. The second side shell is connected to the machine shell through a third fastening piece, and the other part of the first fastening piece is shielded by the second side shell. The shell assembly structure can be detached for maintenance or replacement, the shell, the cover body and the first side shell are combined, the structure connection is reliable, breaking and disassembly are prevented, the shell assembly structure is particularly suitable for outdoor use scenes, only the third fastener is seen on the appearance surface, and the first fastener and the second fastener cannot be seen.

The invention discloses an underground space structure and a construction method. The problems that in the prior art, steel pipe joints need to be cut when an underground structure is constructed through a pipe-roofing method, the construction technology is complex, the field operation amount is large, and the construction risk is high are solved. The underground space structure comprises a hollow closed supporting structure, a supporting reinforcing piece is arranged in an inner cavity of the hollow closed supporting structure, and concrete is poured in the inner cavity of the hollow closed supporting structure; the hollow closed supporting structure comprises at least one preceding pipe joint, a plurality of standard pipe joints and at least one following pipe joint which are formed according to the construction sequence, the preceding pipe joint and the adjacent standard pipe joint, every two adjacent standard pipe joints and the following pipe joint and the adjacent standard pipe joint are in lap joint and meshed, and waterproof structures are constructed at the lap joint and meshed positions. Under the condition that peripheral partitioning is carried out, the occupied field can be reduced, meanwhile, the mechanical construction efficiency is high, segment cutting is not needed, the material utilization rate is increased, meanwhile, field operation is reduced, the construction efficiency is improved, and the construction quality is better guaranteed.

This utility model discloses a prestressed concrete composite floor slab, comprising a reinforced concrete slab body cast in one piece using the pre-tensioning prestressing method. A thinned section is formed at the upper part of the slab end connecting to the composite beam, serving as an interlocking space for the subsequent filling of the composite beam's concrete. Various types of reinforcing bars extend beyond the slab edge within the reinforced concrete slab body, forming a dense reinforcing mesh in the connection area with adjacent components. The thinned section creates an "interlocking space" for the on-site casting joints, allowing the composite layer concrete of the composite beam to flow more smoothly and wrap around the slab edge reinforcing bars, resulting in a denser filling and improved joint integrity and shear resistance. Furthermore, the coordinated extension of various types of reinforcing bars to form a "reinforcing mesh" increases the contact surface and mechanical interlocking effect between the precast slab and the subsequent concrete, enhancing interfacial bond strength, shear resistance, and load transfer efficiency.

The utility model provides a split formula combined distribution box relates to distribution box technical field, including split mechanism, split mechanism includes box one, the one end of box one sets up box two, the one end of box one and the one end of box two corresponding contact, the one end of box two is provided with the carousel, the inside of box two and the center of carousel swing joint. The utility model fixes the fixed plate on the wall surface, makes the assembly board and the abutting board get the support, then, the box one and the box two are combined from different directions, make the assembly board be located in the inside of both, through the outside force to convex rod, let the movable arm drive carousel produce ninety degrees rotation, thereby lock rod and the bite disc complete the joint, ensure that the box one and the box two always keep firm and reliable through the structure connection of lock rod and bite disc, this way makes when replacing the box one and the box two, do not need to dismantle the electrical on the assembly board, need not interrupt the connection of electrical element.

The utility model discloses a composite coupling with a diaphragm and a two-way waterproof ventilation valve, and belongs to the technical field of special vehicle chassis transmission systems. The flange plates at the two ends are connected with the power output end and the power input end of equipment respectively and connected with the connecting discs through the diaphragms, the connecting discs at the two ends are connected with the flange outer sleeve assemblies through bolts, and the flange outer sleeve assemblies at the two ends are connected with the spline sleeve assembly and the spline shaft assembly respectively. The sealing assembly is in clamp pressing fit with the flange jacket assemblies, the spline housing assembly and the spline shaft assembly, and waterproof ventilation valves are arranged in the flange jacket assemblies at the two ends. The spherical cage universal coupling integrates the structural characteristics of the spherical cage universal coupling, and has the advantages of large axial compensation, constant-speed transmission, large bearing capacity and the like; the flange plates at the two ends are connected with the connecting plate in a diaphragm connection mode, so that the ball cage universal coupling has good vibration reduction performance; after the waterproof ventilation valve is additionally arranged, liquid can be effectively prevented from entering the ball cage universal coupling, and meanwhile internal and external air pressure balance can be kept.

The invention belongs to the field of engineering foundation seepage prevention, and discloses a cement soil pile wall and plastic steel sheet pile composite vertical seepage interception system and a construction method thereof.The composite vertical seepage interception system comprises a cement soil pile wall formed through stirring in advance, a plastic steel sheet pile formed through macromolecule thermoplastic forming and a connecting structure for connecting the plastic steel sheet pile and a main body; the connecting structure is composed of a rubber water stop strip, a seepage-stopping post-pouring connector, a water stop copper sheet and a flexible water stop material layer, the bottom of the plastic steel plate pile is flush with the bottom face of the cement soil pile wall, and the top of the plastic steel plate pile is exposed out of the top face of the cement soil pile wall. During construction, a special device is selected to pre-form a cement soil pile wall according to the type of a foundation soil layer, a plastic steel sheet pile is implanted before the cement soil pile wall is condensed, and after top surface cleaning and flattening, rubber water stop strip fixing, joint pouring after seepage interception and flexible water stop material layer brushing are conducted, a concrete tooth ridge and a wading building bottom plate are synchronously poured to form a seepage interception closed system. Double seepage interception is formed through the cement soil and the plastic steel sheet pile, and the water stopping reliability and the soil layer adaptability are improved.

The application provides an anchoring type pile foundation beam gravity retaining dam structure, relates to the geological disaster prevention engineering technical field, and is suitable for debris flow prevention engineering under high and steep slope or soft foundation conditions. The structure comprises a dam body, a beam, an anti-slide pile, a continuous beam and a prestressed anchor cable system. The dam body is a cast-in-place structure and is arranged on the beam, the beam is connected with the anti-slide pile, the top of the anti-slide pile is transversely connected through the continuous beam to form an integral force structure, anchor holes are pre-set in the beam, the prestressed anchor cable system is arranged in the anchor holes and is connected with the foundation to make the dam body, the beam, the anti-slide pile and the foundation bear force cooperatively. The structure can reduce the excavation amount, improve the overall stability, the anti-slide capacity and the anti-overturning capacity of the retaining dam, and enhance the structural rigidity, and is suitable for complex geological conditions such as rock, soil and composite stratum.

The vehicle-mounted hoisting device comprises a fixing assembly, a driving assembly and a lifting assembly, the fixing assembly comprises a first fixing frame and a second fixing frame, one face of the first fixing frame is connected with the inner wall of a tail box of the vehicle, and the other face of the first fixing frame is connected with the inner wall of the tail box of the vehicle. The face, opposite to the vehicle trunk, of the first fixing frame is connected with the second fixing frame through a sliding assembly, the driving assembly comprises a first motor, a rack and a gear set, the rack is arranged on one side of the first fixing frame, the first motor and the gear set are arranged on one side of the second fixing frame, the output end of the first motor is connected with the gear set, and the gear set is meshed with the rack. The first motor drives the gear set to conduct transmission on the rack, electric control is combined, the telescopic distance of the second fixing frame and the height of the lifting assembly can be accurately adjusted, the automatic operation efficiency is high, and the operation radius is reliable.

The utility model provides an island platform. The island platform comprises a main island platform and an auxiliary island platform, the main island platform comprises a main platform surface, an island platform main body and an island platform base, the main platform surface is fixedly connected to the top of the island platform main body, and the island platform base is fixedly connected to the bottom of the island platform main body; the auxiliary island platform comprises an auxiliary platform surface and an island platform support, the auxiliary platform surface is fixedly connected to the top of the island platform support, and the island platform support is hinged to the island platform base through a hinged shaft; an adjusting assembly used for angle adjustment is arranged between the island platform support and the island platform base. According to the island platform, the inclination angles of the main platform surface and the auxiliary platform surface are adjustable, it is ensured that the two platform surfaces are kept on the same plane, the auxiliary platform surface is prevented from inclining, and the use experience of the island platform is improved.