37results about How to "Limit axial movement" patented technology

A running tool for well drilling operations is carried by a running string into and out of a wellbore. A collet is carried by the running tool, the collet having fingers with a radially expanded position arranged to latch against a wellbore shoulder in the wellbore. The fingers are resiliently and radially contractible. A shear element is carried by the collet, the shear element preventing the fingers from radially contracting to unlatch the running tool while the shear element is intact. If a selected axial force is applied against the shear element, it shears, freeing the collet fingers to retract. The collet may be part of a tool to set and release a liner hanger from engagement with a string of casing.

The invention relates to a vacuum scroll compressor, in particular to a vacuum scroll compressor which doesn't use a cross ring to limit rotation of a removable scroll pan. The vacuum scroll compressor comprises the removable scroll pan and a crankshaft penetrating through the base, wherein the crankshaft comprises a front crankshaft section and a rear crankshaft section, the front crankshaft section has preset crankshaft eccentricity relative to the rear crankshaft section, the removable scroll pan is mounted at the front end of the crankshaft and connected with the base through an eccentric shaft, and the eccentricity and the rotation angle vector of an eccentric shaft section connected with the removable scroll pan relative to the eccentric shaft section connected with the base are equal to the preset crankshaft eccentricity and the rotation angle vector of the front crankshaft section relative to the rear crankshaft section. According to the vacuum scroll compressor, equipment vibration and noise are reduced, and the service life is prolonged.

The invention provides a compressor which comprises a motor and a crankshaft. The motor and the crankshaft are arranged in the shell. An axial moving limiting device is arranged at the tail end of the crankshaft and comprises a supporting seat, a bearing and a pressing plate. The supporting seat is inlaid in the shell. The bearing is arranged on the supporting seat. The supporting seat is arranged on the crankshaft in a sleeving manner through the bearing. The pressing plate is fixedly arranged on the supporting seat. The pressing plate is used for limiting the axial movement of the bearing. The invention further relates to an air conditioner. According to the compressor and the air conditioner, the axial moving limiting device is arranged at the tail end of the crankshaft of the compressor, the problem of axial moving of the crankshaft is effectively solved through the bearing and the pressing plate of the axial moving limiting device, the problem of periodical noise vibration of the compressor under some conditions is solved, the axial moving limiting device is simple in structure, convenient to install and high in universality, the problems of radial deflection and eccentricity of the crankshaft are effectively solved, and the coaxility of the whole compressor is ensured.

A low-frictional-loss thrust conical roller bearing comprises an upper ferrule, a lower ferrule, a conical roller and a holder. The geometrical parameters of the conical roller and the ferrules meet the pure rolling geometrical conditions and the axial sliding self-locking physical conditions of the roller. The large end face of the conical roller makes contact with the top face of a frame-shapedpocket of the holder, and the large end of the conical roller does not make contact with the stop edges of the upper ferrule and the lower ferrule. The low-frictional-loss thrust conical roller bearing has the beneficial effects that a sliding state of a rolling belt between the rolling body and a rolling way is changed into a pure rolling state, the large end of the conical roller does not make contact with the stop edges of the upper ferrule and the lower ferrule, thus the situation that the large end of the roller makes contact with the stop edges of the ferrules, and therefore sliding friction occurs is avoided, friction between the large end of the roller and the holder is reduced to the largest extent, and the friction and lubricating conditions between the holder and the large end of the conical roller are improved to the greatest extent; and meanwhile, the contacting strength of the contacting position of the large end of the roller and the holder is ensured, the efficiency ofthe bearing is improved, and the fatigue life of the bearing is prolonged.

The invention discloses a slurry-rotating-type turbine runner connecting rod pin limiting device. The slurry-rotating-type turbine runner connecting rod pin limiting device comprises a limiting part,an outer lug and an inner lug, wherein the outer lug and the inner lug are fixed to a turbine runner relay cylinder, connecting rod pins are assembled in pin holes of the outer lug and the inner lug,a clamping groove is formed in the outer lug, the lower portion of the limiting part is arranged in the clamping groove, the upper portion of the limiting part blocks the lower areas of the outer endfaces of the connecting rod pins, the limiting part is limited in the clamping groove through the connecting part and does not fall off, axial displacement force of the connecting rod pins is totallyborne by the limiting part and the clamping groove, and the connecting part does not bear the axial displacement force of the connecting rod pins. By means of the slurry-rotating-type runner connecting rod pin limiting device, the limiting part which is used for limiting axial displacement of the connecting rod pins is limited in the clamping groove through the connecting part, so that the axial displacement force in the working process of the connecting rod pins is completely borne by the limiting part and the clamping groove, the connecting part only achieves the effect of fixing the limiting part and does not bear the axial displacement force of the connecting rod pins, and the working safety and reliability of a slurry-rotating-type turbine runner are guaranteed.

The invention relates to the technical field of clutches, in particular to a multi-mode clutch, which includes a clutch body and an actuator; the clutch body includes an outer ring and an inner ring coaxially arranged, a control ring is arranged between the outer ring and the inner ring, and the control ring There are several windows running through the outer peripheral surface along its circumferential direction, and a roller is arranged in each of the several windows, and there are several cavities corresponding to the rollers on the inner ring wall of the outer ring; the middle part of the cavity bottom in the cavity to the inner ring The distance between the walls of the outer ring is greater than the diameter of the rollers, the left side of the cavity gradually inclines toward the inner ring from the cavity bottom to the left side, and the right side of the cavity gradually inclines toward the inner ring from the cavity bottom to the right side ; With the rotation of the control ring, the multi-mode clutch of the present invention makes the rollers on it be in three different working positions in the cavity, so that the clutch has three working modes, and the control ring is driven to rotate by the actuator through the driving rod , and then realize the free switching of the three working modes of the clutch.

The invention discloses an anti-axial-disengaging wear-resistant transverse stabilizer bar bush. The anti-axial-disengaging wear-resistant transverse stabilizer bar bush comprises a fixing support, a bush body and a framework. A bush convex rib is arranged on the surface of the bush body, annular grooves are evenly formed in the inner hole wall of the bush, and the framework is embedded into the bush body; the fixing support is matched with the outer surface of the bush body; a stabilizer bar matching part is the part, matched with the stabilizer bar bush, on a transverse stabilizer bar, and the diameter of the stabilizer bar matching part is gradually reduced from the middle to the two edges. The bush body is prepared from materials such as natural rubber, butadiene styrene rubber, butadiene rubber, copolymerization-type epichlorohydrin rubber and ethylene-vinyl acetate rubber in a processed mode. By means of the anti-axial-disengaging wear-resistant transverse stabilizer bar bush, the stabilizer bar and the stabilizer bar bush have the enough axial rigidity, axial disengaging of the stabilizer bar bush is limited accordingly, and abrasion of the bush inner-hole rubber material is reduced, and an abnormal sound generated between the stabilizer bar and the stabilizer bar bush in the traveling process of an automobile is eliminated.

The invention belongs to the field of small-and-medium-diameter deep hole processing, and particularly relates to a self-deviation-rectifying system for small-and-medium-diameter deep hole processingbased on the hydraulic pressure. The self-deviation-rectifying system comprises an inner rotation body, an outer rotation body and a driving mechanism; the inner rotation body is arranged on the periphery of a drill rod in a sleeving mode and is fixed relative to the drill rod; the position between the inner rotation body and the outer rotation body is filled with cutting liquid, so that a flow channel is formed between the inner rotation body and the outer rotation body, the flow channel comprises a plurality of wedge-shaped flow channels which are evenly distributed in the circumferential direction, and when the driving mechanism drives the inner rotation body to rotate, the cutting fluid enters the small ends from the large ends of the wedge-shaped flow channels; and a pressure flow anda shear flow are superposed to generate oil film pressure to realize self-centering and self-deviation-rectifying of the drill rod. A wedge-shaped flowing space is formed between a wedge-shaped solidbody and an outer sleeve, and in a normal state, oil film pressure of the wedge-shaped space provides circumferentially-symmetrical self-centering force; and when the drill rod deflects, the wedge-shaped space generates the oil film pressure, namely self-deviation-rectifying force, the drill rod can be 'pushed back' to the correct axis through the self-deviation-rectifying force, and self-correcting of axis deflection is achieved.

The invention discloses a recyclable bearing box which comprises a box body, a base and a cover plate, wherein the base is arranged under the box body, the cover plate is arranged above the box body,at least a pair of bearing supports for supporting a mandrel wrapped by a coiled material are arranged in the box body, limiting parts for axially limiting the mandrel are arranged on the bearing supports, and a mandrel pressing plug plate for tightly pressing the mandrel is arranged in the box body above the bearing supports. The recyclable bearing box disclosed by the invention has high structural strength and strong bearing ability and compression resistance and can effectively ensure an accuracy requirement of the metal coiled material; furthermore, the recyclable bearing box is recyclable, so that resources are saved.

The invention relates to a horizontal type multiple-stage centrifugal pump. The centrifugal pump comprises a carbon-steel shaft, a cast iron impeller, a balance disc, a rolling bearing, a tensioning bolt and fillers. The two ends of the cast iron impeller are supported on the carbon-steel shaft. The balance disc is fixedly connected to the carbon-steel shaft through the tensioning bolt. The fillers are arranged at the two ends of the carbon-steel shaft. A rubber water deflector and an O-shaped rubber sealing ring are installed on the carbon-steel shaft. The cast iron impeller is provided with an impeller sealing ring, guide vane sleeves and other vulnerable parts to prevent abrasion to a middle piece and guide vanes. According to the horizontal type multiple-stage centrifugal pump, the structure is simple, operation is stable, and axial movement of a rotor is limited; the service life is long, the production cost is low, and abrasion to the balance disc and a balance ring is greatly reduced, so that the service life of the balance disc and the service life of the balance ring are prolonged, and the working efficiency of the centrifugal pump is improved.