492 results about "Split pin" patented technology

The invention provides an improved novel clamp for rotary milling of compressor blades. The clamp has the advantages of stable and reliable clamping, uniform reference and stable rotary milling processing. The clamp comprises a blade root support base, a blade root side surface positioning block and a blade root side surface pressing block are mounted on two sides of the blade root support base respectively, and the blade root support base is mounted at a rotary disc. The clamp is characterized in that a wheel groove is mounted at the upper part of the blade root support base, a padding block is mounted at the bottom of the wheel groove, a rectangular through slot is transversely formed at the bottom of the blade root support base, a slide block is mounted in the rectangular through slot, the slide block is connected with a guide rod through a split pin, and the guide rod vertically penetrates the blade root support base.

The invention discloses a white car body static stiffness restriction device of a passenger car and a static stiffness detection method. The device is characterized in that: one side of a front bearing support is provided with a pressure transducer and a hydraulic jack, a plurality of displacement sensors are arranged at the periphery of the white car body bottom surface; the front bearing support comprises a front rack, a T-shaped rack, and a I-shaped guide rail, wherein, the end portion of the front rack is connected with the very center of a crossbeam of the T-shaped rack through bolts and nuts, the crossbeam of the T-shaped rack is arranged at the left and right side of the white car body, and the lower side of the crossbeam is provided with the hydraulic jack; the bottom of the T-shaped rack is connected with the bottom of the front rack through a pin roll and a split pin; the upper surface of the crossbeam of the T-shaped rack is symmetrically provided with I-shaped guide rails; a torque value of the applied load is divided by a twisting angle to calculate a twisting stiffness, and the actual value of the load is divided by a car body deformation displacement to obtain a bending stiffness. According to the invention, the efficiency of various vehicle tests is increased, and the device cost is obviously reduced on the premise that the test accuracy is guaranteed.

This invention discloses a bracket type all directions drilling machine; it includes bracket, drilling machine and connecting device. The connecting device is consisted by connecting parts, rotation parts and clamp parts. The connecting parts include connecting backplane and rotation pin jointed on its central hole. The rotation parts includes rotating dead plate, rotating pin bush and all kinds of bolts, one end of rotating pin bush is jointed to rotating dead plate. Clamp parts include left half loop sleeve, right half loop sleeve, hinge pin, short hinge sleeve long hinge sleeve, cotter pin and stiffener. Hinge sleeve is jointed on each of the two half loop sleeves and connected to hinge pin, left half loop sleeve is jointed to rotating pin sleeve. Connecting backplane is fixed at certain height of the bracket, rotating pi is inserted in rotating pin sleeve, and rotating dead plate is fixed through bolt. Any directions of drill hole can be realized and labor intensity is reduced, and drilling speed is high.

The invention discloses an adverse state detection method of transverse pins of rotation double lugs of high-speed rail overhead contact line equipment. The method includes following steps: in a positioning stage, firstly, according to line characteristics of a connecting position at which a cotter pin is located and inclined cantilevers in an image, detecting lower edges of the inclined cantilevers by employing Hough transform and extracting slope characteristics thereof to realize primary positioning of the cotter pin, and then classifying primary positioning pictures by employing a PBoW model; and in a detection stage, performing coarse positioning by employing target geometric distribution characteristics, performing image enhancement by employing a Retinex method according to characteristics of small size, darkness, and weakness of the cotter pin, extracting a circular characteristic of a screw at the connecting position by employing a Hough accumulation matrix, realizing accurate extraction of a circular ring area in which the cotter pin is located, and finally giving detection criteria of deletion of the cotter pin and insufficient field angle according to a in-circular-ring non-communication area distribution rule. According to the method, positioning accuracy of the connecting position of double lugs and the connecting position of upper ends of short diagonal braces and fault detection of falling of the cotter pins and insufficient field angle are realized.

An antenna connection function for a noncontact interface is provided by suppressing a modification in a pin arrangement and a pin shape of a memory card that does not correspond to the noncontact interface. Two antenna connecting pins having the memory card are divided into two areas in which a size of one potential supply pin is the largest and used as a split pin arranged at intervals. Because a size of the two antenna connecting pins is at maximum as large as the size of the potential supply pin, the two antenna connecting pins are provided and the memory card that corresponds to the noncontact interface is obtained by devoting a pin area having the size of the one potential supply pin to the memory card that does not correspond to the noncontact interface. Accordingly, the pin area of the memory card that corresponds to the noncontact interface can be formed without departing from the pin area of the memory card that does not correspond to the noncontact interface.

The invention provides an automatic water discharge device which comprises a shell, an end cover, a long guide rod, a water inlet device, a water discharge device and a ventilation device, wherein the end cover is arranged on the top of the shell; the water inlet device is positioned on the end cover and is communicated with the shell; one end of the long guide rod is arranged in a guide sleeve in a sliding way, and the other end of the long guide rod is provided with a plugging block; the guide sleeve is fixedly arranged at the bottom in the shell; the rod diameter of the long guide rod is sequentially and fixedly provided with a high-position cotter pin and is sheathed with a floating block in a sliding way; the water discharge device is arranged at the outer side close to the bottom ofthe shell, and is communicated with the shell; when the long guide rod rises, a water discharge switch device arranged on the long guide rod also rises along with the long guide rod, so that the water discharge device can be started; and when the water inlet device is plugged by the plugging block, a ventilation switch device arranged on the long guide rod is used for starting the ventilation device arranged on the end cover, so that the water can be automatically discharged. The automatic water discharge device realizes the aim of automatically discharging seepage.

Apparatus for displaying images on doors especially sectional overhead garage doors comprises a lattice of interconnected horizontal and vertical members removably attached to each horizontal door panel. The horizontal members are looped around the top and bottom of the panel and detachably joined at the back of the panel to form a complete loop. The horizontal members are held by removable attachment to the vertical members on the outer side of the panel using split pin connectors as a means of attachment. The pin connectors may also be used as an attachment point for lighting displays.

This device relates to the fields of mining, specifically oil and gas industry, hydro-geological, geological engineering and water supply industries and is intended for cutting slot-shaped seats in well side zones of producing formation by hydro-abrasive blast. The determined task is solved by introducing essential changes into the known device for construction of cutting slot-shaped seats from the well wall inside the rock consisting of the hydro-abrasive jet generator connected with the perforator through the pump-and-compressor tubing string; the perforator is put into the casing pipe and has two diametrical nozzles which are directed at the well wall; there is a ball valve at the perforator end, as well as devices for adjustable partial unloading of PCS, PCS weight measuring device, abrasive jet pressure measuring device and the sealer for sealing of wellhead. The changes are as follows:—The perforator is directly connected with PCS;—A pin mounted under the perforator with possible axial movements is introduced;—A cylindrical retainer washer is put on the upper part of the perforator above nozzles; the washer is fixed so as to permit axial movement;—PCS indexing mechanism, step rings and a tripping muff are mounted bottom up and in alignment on the lower tube of PCS which is in series connected with the perforator;—At the same time the pin is connected with the cylindrical washer situated on the upper part of the perforator by control-rods with possible axial movement;—The indexing mechanism is put on PCS with the possibility of fixed coupling of its body with the casing pipe wall and split engagement of its body by step rings. Step rings are to be rigidly fixed on the lower PCS tube, and the tripping muff-on the PPS with its skirt down. At least a couple of rotary fluke-claws, with one end of each hingedly connected with the body of indexing mechanism, and the other end clasped to the casing pipe wall by spacer springs mounted between the indexing mechanism body and the fluke-flaw end, can be a variant of engagement of the indexing mechanism body with the casing pipe wall. At least a couple of spring-mounted pins installed on the interior surface of the indexing device body can be a variant of split engagement of the indexing mechanism by step rings. At that the pin heads are of round shape at the contacting end set against PCS. A muff with conical inside surface and the exterior of streamlined form can be a variant of tripping muff for forced tripping of the indexing mechanism from the casing pipe wall. The optimum distance between the step rings equals to one drain port diameter D±5%, and the number of rings has to amount to prescribed length of the slot-shaped seat divided by the drain port diameter D. At the same time adjacent drainage canals will unite and form a single slot-shaped seat. The recommended force for coupling of the split pin heads with PCS lies within the limits of 10-20% of PCS weight. The recommended force for coupling of the indexing device body with the casing pipe wall is in the range from 30% of PCS weight up to breaking strength point of the casing pipe.

An integrated lifting apparatus for attaching a sling or other lifting means to a load having an upright and substantially hollow post. A bore is provided near the upper extent of such hollow post, said bore extending horizontally through said hollow post. A threaded bolt having an enlarged head on one end, preferably constructed of high strength and/or shear resistant material, is disposed through said bore. A lock nut having an outer diameter greater than the diameter of said bore is threaded onto the end of said bolt. If desired, a cotter pin can also be used to secure such lock nut on said bolt.

A rotary cutting deck is suspended from the frame of a lawn mower to hang beneath the frame of the mower between the front and rear ground engaging wheels of the mower. A single front pull arm is pinned by a pivot pin to the front of the cutting deck. This pivot pin can be easily released and pulled by removing a single hairclip pin or cotter pin. The rear of the cutting deck is hung by two downwardly facing suspension hooks onto the cross rod of a pivotal hanger. After the front pull arm is disconnected from the front of the cutting deck, the operator lifts up the rear of the cutting deck to unhook the suspension hooks, pulls the cutting deck slightly rearwardly, and then lowers the cutting deck to the ground to allow the cutting deck to be slid out from underneath the mower after also removing any deck drive belt or similar cutting blade drive system. This can be easily and quickly done.

Provided is a lighting assembly comprising a pin end connector and a knuckle end connector. The pin end connector includes a protrusion having at least one wall and a rotational fastener configured to be received through and retained by the wall. The knuckle end connector includes a discontinuous seat having a first opening configured to receive the protrusion and a second opening configured to receive the rotational fastener. The pin end connector is configured to be received by the knuckle end connector and pivotally rotate to attach the first connector assembly with the second connector assembly. Also provided is a method for joining the pin end connector with the knuckle end connector.

The latch apparatus for portable display devices has a pin portion and an actuator. The latch apparatus has an opening into which the pin portion is inserted to secure the display device in a device mount. The actuator applies force to release the pin to remove the display device from the device mount. Both the actuator and the pin portion have ramps that are designed to make contact with each other and slide as force is exerted to the actuator. Due to the ramps, the pin portion moves to withdraw from the opening of the display device as force is applied to the actuator. Biasing means maintains the position of the pin such that the pin portion securely holds the display device in the device mount unless the actuator is pressed for releasing the pin portion.

The invention relates to the technical field of tower crane equipment, in particular to a dual-connection type tower crane foundation. The dual-connection type tower crane foundation is characterized in that a fastening device is arranged between a main concrete foundation unit and transitional concrete foundation units as well as between the transitional concrete foundation units and end concrete foundation units and comprises locking lug plates, connecting lug plates, connecting bolts, connecting pin shafts, cotter pins and positioning nuts; two sides of two ends of the transitional concrete foundation units are respectively connected with the locking lug plates, the connecting lug plates are connected around the main concrete foundation unit, the inner ends of the end concrete foundation units corresponding to the locking lug plates on two sides of the transitional concrete foundation units are respectively connected with the connecting lug plates, one ends of the connecting bolts penetrate through connecting through holes on the connecting lug plates and connecting blocks through the connecting pin shafts and are fixedly connected with the cotter pins, and the other ends of the connecting bolts penetrate through gaps in the middle of the locking lug plates to fixedly contact with the locking lug plates via the positioning nuts. The dual-connection type tower crane foundation has the advantages of novel structure, high safety, convenience in mounting, demounting and transporting and the like.