5results about How to "Guarantee stress stability" patented technology

This invention relates to the field of membrane laying technology, and more particularly to a geomembrane laying device. It includes a frame with two sets of rollers symmetrically arranged on it. These rollers work together to support the geomembrane roll. A base plate is detachably mounted at both ends of the geomembrane roll on the frame. A primary spring is mounted on the base plate, with a truss plate above it. A secondary spring is mounted on the truss plate, and a support is mounted above the secondary spring. A horizontal insert is detachably mounted on the support, with a rod inserted into the insert. A top spring is positioned between the rod and the insert. This multi-stage buffer structure, combining primary and secondary springs, along with the top spring, achieves graded dispersion of elastic tension, significantly reducing the geomembrane pinching and tensile damage problems caused by the concentrated tension of traditional single-segment springs, thus ensuring the geomembrane's impermeability and service life.

The invention provides precision measurement equipment for the inner diameter and the outer diameter of a gear ring, which belongs to the technical field of measurement and comprises a workbench, a positioning mechanism, an outer diameter detection mechanism and an inner diameter detection mechanism. According to the precise measurement equipment for the inner diameter and the outer diameter of the gear ring, the inner diameter detection mechanism and the outer diameter detection mechanism share the same positioning mechanism and the gear ring in the same rotating state, measurement of the inner diameter and the outer diameter of the gear ring can be synchronously completed through one-time clamping and the same reference, tools do not need to be replaced, secondary clamping is not needed, the detection process is greatly simplified, and the detection efficiency is improved. Compared with the prior art, equipment investment cost and manual operation cost are reduced, the problem of additional measurement errors caused by separate clamping and inconsistent positioning references in the prior art is solved, the relevance and accuracy of internal and external diameter measurement data are remarkably improved, and the overall size precision of the gear ring can be reflected more truly and comprehensively.

The invention discloses a new energy power battery heating wire resistance testing device and a heating wire thereof, and relates to the technical field of resistance detection, and the new energy power battery heating wire resistance testing device comprises a bottom plate, a resistance detection device, a transmission device, a shaping device and a heating wire; according to the invention, the push plate pushes the turning block to drive the transmission plate to rotate, and the guide effect of the slope surface structure of the transmission groove is utilized to drive the shaping rod to move radially, so that the heating wire can be shaped, and the stress uniformity and the current conduction stability of the heating wire during detection are effectively ensured; the technical problem of large detection data deviation caused by irregular shape of the heating wire in traditional detection is solved, and the accuracy and the reliability of a resistance detection result are greatly improved.

The present application discloses a kind of railway prefabricated box girder prestressed steel strand whole hole threading process, belong to steel strand threading field.The process includes the following steps: step one, threading preparation: the pay-off reel and threading machine are moved to the end of beam body predetermined position, clean the reserved hole of beam body, finished product bundle is hoisted into pay-off reel and end bundling is removed;Step two, finished product bundle traction: the front end of finished product bundle is pulled into the clamping pushing mechanism of threading machine, and the clamping pushing mechanism is started to pull finished product bundle close to the reserved hole;Step three, install guide wheel: install guide wheel at the front end of finished product bundle, and the end of finished product bundle is fixed by detachable connecting structure between guide wheel and finished product bundle.The present application is precast by finished product bundle factory fixed size, whole bundle mechanical pushing and two end mark plate corresponding check, so that each steel strand is parallel straight and not winding, the stress is consistent when tensioning, while reducing manual operation, improve construction efficiency and quality.

The utility model discloses a lower control arm of a double-fork-arm front suspension, which comprises a control arm body, the control arm body is of a cavity structure formed by buckling and welding an upper plate and a lower plate, and a first extension end, a second extension end and a third extension end of the control arm body are respectively used for connecting a front bushing, a rear bushing and a ball pin assembly; the damping support assembly comprises a damping inner plate, a damping outer plate and a mounting nut, the damping inner plate is embedded in the cavity structure and welded to the inner wall of the upper plate and the inner wall of the lower plate, the damping outer plate is arranged on the outer side of the upper plate and welded to the upper plate, and the mounting nut is fixed to the side, back to the damping outer plate, of the damping inner plate; through holes are formed in the areas, right opposite to the damping inner plate, of the upper plate and the lower plate, a damper mounting channel is formed between the damping inner plate and the damping outer plate, and mounting through holes used for bolt connection are formed in the damping inner plate and the damping outer plate in a right opposite mode. The mounting function integration of the shock absorber can be realized, and the requirements of light weight and structural reinforcement are met.