8results about How to "Not subject to wear and tear" patented technology

The utility model discloses an automobile big box with a mounting mechanism, which relates to the technical field of automobile accessories and comprises a frame and a connecting rod, a box body is arranged above the frame, a fixing frame is welded at the rear end of the frame, and the connecting rod matched with the fixing frame is welded at the bottom of the rear end of the box body. According to the automobile large box frame with the mounting mechanism, the base at the front end is provided with a positioning groove, when a positioning rod at the bottom of a box body is embedded into the base, a circular-truncated-cone-shaped connecting block at the bottom of the positioning rod can abut against a triangular clamping block in the base, and when the connecting block moves downwards, the clamping block can be pushed to move towards one side of the connecting block; after the connecting block moves downwards and does not abut against the clamping block, the clamping block resets along with the elastic effect of the spring, the clamping block is located at the upper end of the connecting block, the clamping block, the connecting block and the positioning rod are in clamped connection, the front end of the box body and the frame can be more easily, conveniently and rapidly assembled and disassembled, the operation time is greatly shortened, and the working efficiency is improved. And the working efficiency is improved.

The invention belongs to the technical field of avionics testing and signal simulation, and discloses an LVDT analog simulation circuit and a signal simulation method thereof, and the LVDT analog simulation circuit comprises a main control module, a communication interface module, an excitation signal processing module and a sensor signal simulation output module. The main control module receives an external displacement setting instruction through the communication interface; the excitation signal processing module comprises a DAC unit and an excitation conditioning unit and is used for generating amplitude control voltage and conditioning an external LVDT excitation signal; the sensor signal simulation output module serves as a core and comprises a difference value control unit, a sum value control unit, a summation unit and a differencing unit, a conditioned excitation signal and amplitude control voltage are synthesized through an analog multiplier and an operational amplifier circuit, and finally three-phase differential signals (a high end, a low end and a center tap) simulating a real LVDT sensor are output. A mechanical LVDT is replaced by a full-electronic mode, high-precision, programmable and flexible simulation of displacement signals is achieved, the device is particularly suitable for occasions needing high-reliability LVDT interface testing and verification such as an aviation flight control system, and the device has the advantages of being low in cost, high in flexibility and easy to integrate automatic testing.

The invention discloses a telescopic clamping module of a gamepad and the gamepad, and aims to solve the problems that an existing telescopic gamepad integrated clamping structure is complex in mold opening, high in cost and poor in compatibility, and the whole gamepad needs to be scrapped after a clamping part is damaged. The telescopic clamping module comprises a fixed shell and a movable shell which can slide in a telescopic mode relatively, a reset spring is connected between the fixed shell and the movable shell, and fixed ends are arranged at one ends of the outer sides to be connected with a gamepad shell. The fixed shell and / or the movable shell are / is provided with a clamping part, an anti-sliding / anti-abrasion pad is arranged on the front face of the fixed shell, one anti-sliding / anti-abrasion pad is provided with a sliding channel / rail, and the other anti-sliding / anti-abrasion pad is slidably installed in a matched mode. The gamepad comprises a left gamepad, a right gamepad and the telescopic clamping module, and the fixed shell and the movable shell are fixed to the two gamepads respectively. The telescopic clamping function is independent into a module, the design of a handle shell is simplified, the mold opening cost is reduced, clamping is stable, assembling is flexible, a damaged module can be independently replaced, the situation that the whole handle is scrapped is avoided, and the handle is adaptive to a mobile phone or a tablet personal computer.

The utility model relates to the technical field of grinding machines, in particular to a lathe bed structure of a vertical and horizontal grinding machine, which comprises a lathe body, a reinforcing component is mounted on the inner side of the lathe body, two groups of guide rail components are mounted on the lathe body, a carriage is jointly mounted on the two groups of guide rail components, and a workpiece table component is mounted on the carriage. The guide rail assembly comprises a guide rail installed on the bed body, a sliding seat is connected to the guide rail in a sliding mode, protective sleeves arranged on the outer side of the guide rail in a sleeving mode are arranged on the two sides of the sliding seat, a fixing plate fixedly connected with one end of each protective sleeve is fixedly arranged on the side wall of the bed body, and the other end of each protective sleeve is fixedly connected with one end of the sliding seat. According to the lathe bed structure of the vertical and horizontal grinding machine, the guide rail assembly is arranged, the protective sleeve is arranged on the guide rail, the protective sleeve is used for blocking chippings and preventing the chippings from falling on the guide rail, the protective sleeve can stretch out and draw back along with movement of the sliding base, the guide rail can be better protected against abrasion, the operation precision of the guide rail on the lathe bed is improved, and the service life of the guide rail on the lathe bed is prolonged.

An anti-falling solid sucker rod special for a spiral guiding and centralizing screw pump relates to the technical field of sucker rods and comprises a sucker rod body, a plurality of paraffin scrapers are rotatably arranged on the sucker rod body in parallel in the axial direction, lining tile sleeves corresponding to the paraffin scrapers are fixed on the sucker rod body, and the paraffin scrapers are rotatably mounted on the lining tile sleeves. An embedded concave rod head is arranged at the upper end part of the sucker rod body, an embedded convex rod head is arranged at the lower end part of the sucker rod body, the embedded concave rod head and the embedded convex rod head on the adjacent sucker rod body are fixed through a coupling, and the sucker rod body is also provided with an opposite jacking type locking structure for restraining the axial position of the coupling. The sucker rod solves the problems that when a wax scraper on a sucker rod in the prior art is used, the rod body is abraded due to the fact that the wax scraper rotates in the circumferential direction, and the working stability is affected due to the fact that the wax scraper moves in the axial direction of the rod body along with rotation of the wax scraper.

This utility model relates to the field of furniture technology, specifically disclosing an inflatable, gap-filling bed frame, comprising: a bed frame surrounding an inner cavity for placing a mattress; and a gap-filling assembly installed on the cavity wall of the inner cavity. The gap-filling assembly has an inflated state where it expands to fill the gap between the mattress and the bed frame, and a deflated state where it contracts to expose the gap. The inflatable, gap-filling bed frame provided by this utility model avoids excessively large gaps between the mattress and the bed frame, thus preserving the aesthetics, and also protects the sides of the mattress from wear and tear.

This invention discloses a real-time positioning and protection device for fish migration tracks, comprising a rigid protective sleeve, a bottom cover fixedly connected to the bottom end of the rigid protective sleeve, and a through hole in the center of the bottom end cover; a top cover detachably connected to the top end of the rigid protective sleeve, and a GPS placement box detachably connected to the center of the bottom end of the top end cover, with a GPS locator installed inside the GPS placement box. This invention discloses a real-time positioning and protection device for fish migration tracks, designed as a protective device for mainstream ultrasonic receivers. It not only adds GPS positioning functionality to the ultrasonic receiver, enabling GPS positioning of tagged fish and equipment placement, facilitating the generation of fish migration tracks and equipment tracking, but also protects the ultrasonic receiver from wear and tear or other biological adhesion, ensuring the normal operation of the equipment.

The invention discloses a composite coating containing a micropore array and a lubricating storage material and a preparation method of the composite coating, and relates to the technical field of wear-resistant coating preparation. The preparation method of the composite coating containing the micropore array and the lubricating storage material comprises the following steps that S1, a nitriding layer is prepared on the surface of a base body; s2, preparing a first micropore array; s3, forming a first lubricating storage layer; s4, forming a first wear-resistant layer; s5, preparing a second micropore array; s6, forming a second lubricating storage layer; and S7, the steps S4 to S6 are repeated, and a multi-layer composite wear-resistant coating containing the micropore array and the lubricating storage material is prepared. And S8, depositing a continuous lubricating coating on the surface of the multi-layer composite wear-resistant coating containing the micropore array and the lubricating storage material obtained in the step S7. According to the composite coating containing the micropore array and the lubricating storage material and the preparation method of the composite coating, by arranging the nitriding layer containing the lubricating storage material and the multiple wear-resisting layers, the wear-resisting performance and the friction reducing performance are remarkably improved.