6results about How to "Prevent free sliding" patented technology

The utility model provides a dimming curtain assembly which comprises a telescopic support, a movable frame and a plurality of movable clamps, and the telescopic support is used for being installed on a wall. The telescopic support comprises a first support body and a second support body, the first support body is connected to the second support body in an inserted mode and stretches out and draws back relative to the second support body so that the first support body and the second support body can stretch out and draw back conveniently, and therefore the length of the telescopic support is adjusted to adapt to different environments; the plurality of movable clamps are connected through a curtain; the multiple movable clamps are movably installed in the movable groove and engaged with the inner side wall of the movable groove so as to maintain the positioning state of the multiple movable clamps, the positioning state of the multiple movable clamps is guaranteed, free sliding of the multiple movable clamps is avoided, and the shaping effect of the movable clamps of the dimming curtain assembly is improved.

The utility model discloses a portable soil quantitative taking assembly for soil-borne disease, including taking soil drill cylinder, connecting cylinder, push soil platform, push soil rod and limit stud, wherein, be equipped with taking soil cavity in taking soil drill cylinder inside, and the top surface fixedly connected with connecting cylinder of taking soil drill cylinder, be equipped with rotating handle on connecting cylinder, push soil rod slidingly connected in the movement cavity of connecting cylinder, and be equipped with push soil platform in taking soil cavity, and the bottom fixedly connected on push soil platform of push soil rod, and the bottom of push soil platform in taking soil cavity is the quantitative area, further, be equipped with multiple sets of limit hole on push soil rod, and be equipped with quantitative scale on the side of each set of limit hole on push soil rod, and the top surface fixedly connected with screw base of connecting cylinder, and be equipped with limit stud in screw base on screw connection, and limit stud is inserted into a set of limit hole. The utility model relates to the technical field of soil sampler, and it has the characteristics of soil quantitative sampling according to need, soil discharging convenience, and overall portability.

The utility model relates to the technical field of soil sampling, in particular to a biological crust soil sampling device which comprises a top plate, a sampling barrel, a connecting column and a second pressing plate, the bottom of the second pressing plate is fixedly connected with the top of the connecting column, and the bottom of the connecting column slidably penetrates through the top of the top plate and is fixedly connected with the top of the sampling barrel; the sampling barrel is located below the top plate, the bottom of a conical ring is designed to be an annular knife edge which is conveniently inserted into a plane, the integrity and accuracy of a soil sample during sampling can be ensured, and soil on the inner wall of the sampling barrel can be conveniently cleaned through a shovel plate due to the design of a cleaning mechanism; the soil sampling device is simple in structure and convenient to use, the tedious process of manual cleaning in a traditional sampling mode is avoided, the accuracy of subsequent sampling results is guaranteed, meanwhile, the device can be firmly fixed to the soil surface through the design of inserting nails and connecting blocks, and sliding or inclining in the sampling process is prevented.

The utility model provides an intake manifold positioning and clamping device which comprises a positioning platform, a fixed clamping seat is upwards arranged on the positioning platform, the upper end of the positioning platform is in sliding connection with a movable clamping seat sliding towards the direction of the fixed clamping seat, and a driving motor used for driving the movable clamping seat to slide is installed on the positioning platform. The fixed clamping seat and the movable clamping seat are each internally provided with a conduction air cavity, each conduction air cavity is provided with a plurality of limiting sliding holes in the opposite direction, the bottoms of the limiting sliding holes are provided with penetrating holes penetrating out of the fixed clamping seat or the movable clamping seat, the penetrating holes are slidably connected with clamping shafts, and the inner ends of the clamping shafts are provided with sliding shafts slidably connected with the limiting sliding holes. And the outer side of the fixed clamping seat and the outer side of the movable clamping seat are connected with an exhaust pipe and an air injection pipe which are communicated with the conduction air cavity. According to the utility model, the intake manifold is positioned and clamped by adopting a self-adaptive telescopic multi-shaft structure, so that a workpiece can be prevented from being damaged while enough clamping force is ensured.

The utility model discloses a thermos kettle which comprises a kettle cover, the kettle cover comprises a cover body provided with a water outlet channel and a water outlet valve, the water outlet valve comprises a valve cover, the valve cover is arranged at the bottom of the kettle cover, a first sealing ring is arranged at the bottom of the cover body, and the first sealing ring comprises a connecting part and a sealing lip surrounding the water outlet channel; wherein the sealing lip extends by a preset length in the opening direction of the valve cover, the preset length is smaller than the maximum movable distance of the valve cover in the opening direction, and the valve cover can seal and cover the inlet of the water outlet channel by extruding the sealing lip. According to the utility model, the first sealing ring with the sealing lip is arranged at the inlet of the water inlet channel, so that when the valve cover slightly moves downwards due to the clearance problem of the key or other reasons, the sealing lip can fill a gap generated between the valve cover and the inlet wall of the water outlet channel through the deformation of the sealing lip when the valve cover moves downwards; the valve cover is guaranteed to seal and cover the inlet of the water outlet channel, and water flow in the heat preservation kettle is prevented from leaking out through the water outlet channel due to the fact that the inlet of the water outlet channel is freely opened.

The invention relates to the field of welding, and particularly discloses a vulcanizing machine welding device which comprises a supporting frame, a welding assembly is arranged on the supporting frame, an aligning assembly used for aligning a vulcanizing machine pipeline is arranged on the supporting frame, and an adjusting assembly is arranged on the aligning assembly. A guide assembly is arranged between the supporting frame and the alignment assembly, and a fixing plate is arranged on the supporting frame. According to the pipeline welding device, automatic and accurate positioning welding of pipeline notches at different angles can be achieved, the effect of pre-aligning the pipeline through the alignment assembly can be utilized, the distance between the pipeline and a welding point is determined, errors caused by manual pipeline moving by workers are reduced, the effect of aligning the notch angles of the pipeline through the alignment assembly can be achieved, and the welding efficiency is improved. Effective butt joint of the two pipelines is achieved, the phenomena of misalignment and deviation of the pipelines are reduced, the welding precision and welding strength are improved, the welding efficiency is improved, the quality of the welded pipelines is improved, and therefore the service life of the vulcanizing machine and the service life of the corresponding pipelines are prolonged.