6results about How to "Change preload" patented technology

The utility model discloses a kind of damping buffer devices of horizontal numerical control gear rolling machine, it is related to gear rolling machine processing technical field, including cabinet, cabinet top hinged cover plate, cover plate side wall is embedded with glass window, cabinet inside four corners are equipped with buffer component, buffer component top is fixedly connected with connecting block, connecting block bottom is equipped with the adjusting component for adjusting gear rolling machine height, connecting block top four corners are equipped with fixed bolt for with cabinet fixed, the utility model is equipped with knob, can conveniently drive two-way screw rod rotation, realize the adjustment of gear rolling machine height;By the setting of first adjusting part, the hinged angle of first connecting rod and first support plate can be changed, the height support and adjustment of one end of gear rolling machine are realized;By the setting of adjusting ring, the pre-tightening force of adjusting spring can be changed, so as to adjust the overall buffering degree of buffer component, convenient operation and accurate adjustment, solve the problem that adjusting spring buffering degree cannot be adjusted, difficult to adapt to different vibration conditions.

The application relates to a pipe body airtightness detection connecting device and relates to the technical field of a pipe body airtightness detection device, which comprises two standard quick connectors, a self-adapting sealing clamp structure comprises a plurality of sealing shells, the outer portions of the plurality of sealing shells are slidably connected to the outer portions of the standard quick connectors, the two ends of the plurality of sealing shells are fixedly connected with connecting blocks, and the inner portions of the two connecting blocks are slidably connected with limiting bolts. The self-adapting sealing clamp structure can adapt to an oval pipe and other special-shaped pipe bodies through the soft material of the sealing shells, and the sealing shells are connected and limited by the connecting blocks and the limiting bolts fixed at the two ends of the sealing shells, so that the self-adapting sealing clamp structure also has a certain sealing effect on the standard quick connectors between the self-adapting sealing clamp structures.

This application relates to the field of unidirectional membranes, and more particularly to an adjustable unidirectional membrane, comprising: a base, the base including a planar cross-section, on which one or more channels for fluid passage are formed along the circumference of the base; the channels extending radially along the base; an elastic membrane mounted on the base, the elastic membrane including a sealing portion corresponding to each channel, the sealing portion extending along the extension direction of the channel and covering the cross-section, wherein in an initial state, the sealing portion closes the channel under its own pre-tightening force; an adjustment component disposed between the base and the elastic membrane, which is used to pull the sealing portion along the extension direction of the sealing portion to change the pre-tightening force of the sealing portion; by setting the adjustment component to pull the sealing portion, the stretching degree of the sealing portion can be adjusted by pulling the adjustment component, thereby changing the pre-tightening force of the sealing portion in the initial state.

The utility model belongs to the technical field of agricultural machinery, concretely relates to an adjustable drip irrigation belt mulching and seeding integrated machine, including frame, the middle part of frame is provided with seeding mechanism, the right side of frame is provided with mulching mechanism, frame still is provided with multiple groups linear distribution's drip irrigation belt laying mechanism, the utility model discloses a kind of drip irrigation belt laying mechanism, including the unwinding wheel of rotating installation in frame left side, unwinding wheel is wound with drip irrigation belt, the lower side of frame is installed with mounting seat, mounting seat is hinged with bar, bar middle part is equipped with tension spring between mounting seat, bar is opened with the through drip irrigation belt laying passage, bar lower end is provided with ditcher, bar end part is also connected with burying device, burying device is made of two obliquely arranged discs, two discs are V-shaped distribution;Three major core links of seeding, drip irrigation belt laying and mulching are integrated in the same frame, three processes are realized to complete once operation by moving car traction, reduce the number of artificial and mechanical repeated ground, save time and cost.

This invention provides a transnasal interventional variable stiffness flexible bone-grinding robot and a stiffness control method, comprising a grinding mechanism, an inner arm drive mechanism, and an outer arm drive mechanism. The outer arm continuum of this application is composed of snake bone continuum units, which enable it to have both high flexibility and high stiffness. After the outer arm continuum enters the surgical cavity, it can provide a high-stiffness working space for the inner arm continuum and the drill bit. By simultaneously axially stretching / compressing the tendon, the compression or extension of the distal spring of the inner arm continuum can be controlled, thereby changing the stiffness of the distal end of the inner arm continuum. When feeding, the spring is stretched to reduce stiffness, making it more flexible and conducive to reaching the surgical area. When the grinding drill bit is working, the spring is compressed, making it have high stiffness so that it does not damage non-disease tissue when the drill bit grinds bone, realizing the function of adjustable stiffness, which is more conducive to the needs of surgical operation.

The present application relates to a kind of communication optical cable bird pecking prevention device, belong to communication optical cable technical field, including lower semicircular shell and upper semicircular shell rotationally installed in the back of lower semicircular shell, opposite sides of the bottom of the lower semicircular shell are provided with tensile protection assembly, the front side of the lower semicircular shell is provided with feeding opening, the inside of the feeding opening is clamped with feeding cover, the downside of the lower semicircular shell inner wall is provided with a plurality of air holes, the top of the upper semicircular shell is provided with press semicircular shell, the bottom of the press semicircular shell is fixedly installed with a plurality of connection square rods, the downside of the rod wall of a plurality of the connection square rods is slidably installed with telescopic combination cylinder, the present application utilizes methyl anthranilate particle to emit irritating smell to form chemical expulsion, red epoxy resin paint plays the role of visual warning, expulsion sharp block is extended to form physical expulsion by press semicircular shell under pressure trigger, three expulsion means are complementary, avoid bird to produce single adaptability, increase the bird-repelling effect of device.