11results about How to "Fixed length" patented technology

The utility model provides a kind of high-speed tunnel mouth soft blocking security control device, including inflatable security control device, audible alarm, tunnel smooth security code and variable information board, inflatable security control device is several and is set towards the direction of tunnel mouth outside tunnel, inflatable security control device includes air blower and security control bag, air blower is connected with the guardrail vertical rod of tunnel by bearing plate, security control bag is connected with the output end of air blower, audible alarm is interval set on the inner wall of left and right sides of tunnel along tunnel direction of travel, variable information board is set at tunnel entrance, tunnel smooth security code is interval pasted on the inner wall of left and right sides of tunnel along tunnel direction of travel, the utility model realizes tunnel security control by the combination of air blower and security control bag, can be blown full and security control to predetermined position in short time, avoid causing vehicle secondary accident, and introduce tunnel smooth security code, and it is pasted on tunnel wall, passive positioning can be replaced for active alarm by tunnel smooth security code, greatly improve security control efficiency, effectively avoid secondary accident caused by other vehicles entering.

The utility model provides a special-shaped ceiling hoisting assembly, which relates to the technical field of ceiling hoisting and comprises a hoisting piece body. The hoisting piece body is provided with a fixed bearing cylinder in the vertical direction, threads are formed in the outer circumference of the bottom of the fixed bearing cylinder, two nuts are installed on the outer circumference of the bottom of the fixed bearing cylinder through the threads, and threads are formed in the inner circumference of the lower portion of the fixed bearing cylinder. Three strip-shaped holes in the vertical direction are formed in the upper wall of the fixed bearing cylinder in an annular array mode, through fixing holes are formed in the middles of the strip-shaped holes of the fixed bearing cylinder, the fixed bearing cylinder can be conveniently inserted into a wall body hole, an opening moving block is tightly supported in the wall body hole through an opening rotating column, and therefore fixing and dismounting of the fixed bearing cylinder are achieved; the problems that due to the fact that a hoisting assembly is fixed to the wall through bolts, mounting holes in the wall cannot be reused, and fixing measures are inconvenient to add on the hoisting assembly to achieve reuse of the mounting holes in the wall are solved.

The utility model relates to the field of PPR pipe, concretely to a PPR pipe structure of end integrated internal and external thread, including connecting pipe, and the side wall of connecting pipe is opened and passed through and has pipeline b, and the middle part fixed mounting of pipeline b has the baffle, and the side wall of baffle middle part is opened and passed through and has the rotation groove, and the inner rotation groove is installed with the mounting plate, and the arc wall of pipeline b is opened and has a plurality of sliding slots, still include: install the pipe, and the side wall of install the pipe one side is opened and has the installation slot, and the one end of connecting pipe is inserted and is installed in the installation slot. The PPR pipe structure of end integrated internal and external thread, is provided with connecting pipe, and the arc wall fixed mounting of installation slot has a plurality of limit stop, and the limit stop sliding installation is in the sliding slot, and through the both ends of connecting pipe along the installation slot sliding, the limit stop along the sliding slot sliding, to adjust the length of overall pipeline, to be suitable for different installation positions, adjust overall pipeline to the specified position, make the limit stop rotate to the limit slot in the rotation connecting pipe, and the check block is positioned to the limit stop, to fix the length of overall pipeline.

The utility model belongs to the field of test hammers, and particularly relates to a flat support shock resistance test hammer which comprises a hammer handle and a hammer head, an anti-skid sleeve is fixedly connected to the outer side of the hammer handle, a rotating disc is rotatably connected to the right end of the hammer handle, a screw is connected to the middle of the right end of the hammer handle through a bearing, and the screw is fixedly connected with the rotating disc. And protection mechanisms are arranged at the two ends of the hammer head. The outer side of the hammer head is wrapped with the rubber sleeve, the rubber sleeve prevents the hammer head from damaging the support, the fixing block fixes the rubber sleeve, the tension spring pulls the fixing ring close to the hammer head through tension, the sliding rod slides into the hammer head to fix the fixing block, and the problem that the hammer head easily damages the support is solved.

The utility model relates to the technical field of livestock ear tags, and discloses a livestock ear tag which comprises an upper ear tag face and a lower ear tag face, the upper ear tag face abuts against the top of the lower ear tag face, an installation assembly is arranged in the lower ear tag face, a chip is connected in the lower ear tag face in a sliding mode, an ear tag neck is fixedly connected to the top side of the lower ear tag face, and the chip and the ear tag neck are connected through a connecting piece. The middle of the ear tag neck is slidably connected with a telescopic rod, the bottom end of the telescopic rod is fixedly connected with an ear tag head, the top end of the telescopic rod is fixedly connected with a limiting block, the limiting block is slidably connected into the ear tag neck, two protruding blocks are slidably connected into the limiting block, and one side of each protruding block is fixedly connected with a second spring. According to the livestock ear tag, the telescopic rod slides in the ear tag neck so that the length of the ear tag neck can be adjusted, the livestock ear tag can adapt to animals of different sizes, the two clamping plates can be pushed by the two first springs to move oppositely, and therefore the chip is clamped and fixed to be prevented from shaking.

The present invention relates to the technical field of wire processing, and discloses a combinable metal wire processing device, comprising: a first straightener; a second straightener, which is arranged at one end of the first straightener, and one end of the second straightener has a connecting component connected to the first straightener; a straightening wheel, which is installed on the first straightener through a movable adjustment component to straighten the wire; the present invention is provided with a connecting component, a first base plate, a second base plate, an adjustment cam and a movable adjustment component, and the device has a simple structure, can well combine and use a plurality of first straighteners and second straighteners, and can well bring the first base plate and the second base plate close to each other through two adjustment cams, fix the two ends of the first base plate and the second base plate, avoid tilting, affect the straightening effect, and help improve stability; in addition, the position of the straightening wheel can be adjusted individually by rotating the adjustment screw.

The invention relates to the technical field of rice salt tolerance identification, and discloses a rice seedling stage root length damage-free rapid detection salt tolerance identification device which comprises an identification pool, the front face of the identification pool is a transparent observation window, a culture floating plate is movably placed in the middle of the identification pool, and culture openings are evenly formed in the middle of the culture floating plate; a culture net is fixedly installed at the bottom of the culture opening, supporting bases are fixedly connected to the two sides of the bottom of the identification pool, and moving rails are fixedly connected to the front faces and the back faces of the middles of the supporting bases. The movable supporting plate is additionally arranged at the bottom of the identification pool, and the rotor in the identification pool is driven by the rotating shaft magnetic strip on the movable supporting plate to rotate to form a water vortex, so that a downward pulling force is formed on the center line of the vortex, and rice roots at the bottom of a culture opening are conveniently gathered and stretched; therefore, experimenters can visually observe the growth length of the root system of the rice seedling, and tedious operation of measuring the root length and damage to the root system of the rice seedling are avoided.

The present invention discloses a retractable and adjustable bag cage of a bag-type dust collector. The bag cage comprises: an outer cage 1, a bag cage top bowl 2, an inner cage 3, a bag cage bottom bowl 4, a locking hook 5, and a guide ring 6. The outer cage 1 is provided with an outer cage vertical rib 11 and an outer cage back-support ring 12, and the inner cage 3 is provided with an inner cage vertical rib 31 and an inner cage back-support ring 32; the inner diameter of the outer cage 1 is larger than the outer diameter of the inner cage 3; locking hooks 5 are provided on the top two layers of inner cage back-support rings 32 on the top of the inner cage 3, and locking hooks 5 are provided at intervals along the circumference of the inner cage back-support ring 32 on each layer, and the locking hooks 5 are connected to the inner cage back-support ring 32 by rotation; the inner side of the outer cage 1 is provided with a guide ring 6, and the guide ring 6 is divided into two groups, upper and lower, and arranged at intervals along the inner side of the outer cage 1 at an angle, and each guide ring 6 is paired with an inner cage vertical rib 31 and is gap-matched with it. The present invention has the remarkable advantages of ingenious conception, simple structure, convenient telescopic, adjustable length, economical and practical, safe and reliable.

The invention relates to the technical field of conductors, and discloses a cylindrical battery based on conductive pole optimization, the cylindrical battery comprises an aluminum shell, the outer surface of the aluminum shell is detachably connected with a protection assembly for buffering external collision; the first conductive pole is arranged on the lower surface of the aluminum shell; the conductive component is arranged on the aluminum shell; wherein the conductive assembly comprises a base, a second conductive pole and an elastic structure, the base is riveted on the aluminum shell, and the inner side of the base is electrically connected with the second conductive pole through the elastic structure; through the arrangement of the base, the second conductive pole and the elastic structure, when the device is not used, the length of the battery can be adjusted, so that the conductive component is not in contact with the pole piece in the battery jar, a circuit is cut off, the inconvenience that the battery needs to be taken out of the battery jar for additional placement is reduced, the operation is simple and convenient, and the battery can be well fixed through the elastic extension of the conductive component. Therefore, the stable effect of the circuit is guaranteed.

The utility model relates to the technical field of dosing devices, in particular to a woman health care dosing device which comprises a rotating shaft clamped on the inner bottom wall of a storage box and used for limiting, the outer surface of the rotating shaft is fixedly connected with a stirring rod used for positioning, and the inner bottom wall of the storage box is fixedly connected with a heating pad used for heating. The upper end of the storage box is connected with a water pump used for providing power through bolts, the output end of the water pump is in threaded connection with a connecting pipe used for storage, and one end of the connecting pipe is in threaded connection with a telescopic rod used for adjustment. According to the medicine feeding device for woman health care, through cooperative arrangement of the connecting pipe and the telescopic rod, when a patient uses the medicine feeding device, the length of the connecting pipe can be adjusted according to the situation of the patient, the medicine feeding device reaches a proper position, use is convenient, and the problems that the length of equipment is fixed, and the equipment cannot adapt to the bodies of different patients are solved; meanwhile, by means of the arrangement of a water pump, liquid medicine in a storage box can be fed into the body of the patient more conveniently.