15results about How to "Avoid eccentric wear" patented technology

The invention discloses a radial split type multistage pump maintenance device and method, and belongs to the field of maintenance, the radial split type multistage pump maintenance device comprises a support, a jack, a steel ball and a dial indicator, the support is used for supporting an external pump body and realizing vertical placement of the external pump body, the jack is arranged in the support, the steel ball is arranged at the top of the jack, and the dial indicator is arranged on the pump body. And measuring the shaking amount of the pump body bearing seat. The detection means adopted by the invention can effectively eliminate installation accumulated errors caused by factors such as gravity action and pump body spigot fit clearance in the step-by-step assembly process of the sectional pump body, and solves the technical problem that the bearing cannot accurately position the radial center of the rotor.

The utility model discloses a pickaxe-shaped cutting pick. The pickaxe-shaped cutting pick comprises a pick body assembly, a pick head, a hard alloy head and a ball type wear-resistant layer assembly, a rib type reinforcing rib assembly is installed on the outer wall of the tooth body assembly. The tooth head is of a cone frustum structure, and the bottom face of the tooth head is fixedly connected with the top face of the tooth body assembly. The hard alloy head is mounted on the top surface of the tooth head; the ball type wear-resistant layer assembly comprises a plurality of wear-resistant balls and a plurality of mounting grooves, and the mounting grooves are formed in the side wall of the tooth head in the circumferential direction. Through the arrangement of the mounting grooves and the wear-resistant balls, the eccentric wear phenomenon of the wear-resistant layer is avoided, the effect of protecting the pickaxe-shaped cutting pick is achieved, meanwhile, the use performance of the wear-resistant layer is improved, and the service life of the wear-resistant layer is prolonged; through the arrangement of the rib type reinforcing rib assembly, the effect of protecting the pick body assembly can be achieved, the spinning performance of the pickaxe-shaped cutting pick can be optimized, and the overall working efficiency and production efficiency are improved.

The invention discloses a diamond cutting pick for hard rock, and relates to the technical field of cutting pick machining, and the diamond cutting pick comprises a cutting pick base body, a diamond composite tooth and a diamond composite sheet wear-resistant column; a plurality of columnar holes are formed in the upper portion of the cutting pick base body at equal intervals in the circumferential direction, diamond composite sheet wear-resisting columns are welded in the columnar holes, and diamond composite teeth are welded in embedding holes in the top of the cutting pick base body. According to the invention, the diamond composite tooth is embedded in the top of the cutting tooth base body; the service life of the cutting pick is prolonged, and the fracture risk caused by impact is reduced; the cutting pick base body is provided with the cushioning grooves, so that impact force and vibration generated in the working process are effectively dispersed, the integrity of the whole structure of the cutting pick is protected, and the fracture risk caused by impact is reduced; the diamond compact wear-resistant columns are uniformly distributed in the easy-to-wear area of the upper part of the cutting pick base body, so that the crushing area of the cutting pick is increased, the crushing efficiency is improved, and the stability of the cutting pick in work is enhanced through the uniform arrangement and special shape design of the diamond compact wear-resistant columns.

The utility model discloses a limiting and buffering mechanism and a brake pad. The brake pad comprises a steel backing, a plurality of friction structures and a plurality of limiting and buffering mechanisms. Wherein an axial floating gap is formed between the friction structure and the steel backing, the friction structure is provided with a mounting boss in the axial direction of the friction structure, the steel backing is provided with a mounting hole, the mounting boss extends into the mounting hole, and a direction adjusting gap is formed between the mounting boss and the mounting hole in the circumferential direction of the friction structure; the limiting buffer mechanism comprises a first elastic structure and an elastic limiting structure, the first elastic structure is arranged outside the mounting boss in a sleeving mode, the elastic limiting structure is fixed to the mounting boss, the first elastic structure is connected between the steel backing and the friction structure in an abutting mode, and the elastic limiting structure is connected to the side, back to the friction structure, of the steel backing in an abutting mode. The whole friction face of the friction structure can be tightly attached to the brake disc to achieve braking, braking safety is guaranteed, the phenomena of uneven stress and eccentric wear of the friction structure can be avoided, and the service life of the brake pad is prolonged.

The present application relates to the technical field of tubular turbine, and discloses a kind of tubular turbine control ring auxiliary support device, including hanger, the lower part of the hanger is bent part, the bent part is equipped with self-lubricating wear pad and support block, the self-lubricating wear pad is fixedly connected above support block, the upper part of the hanger is equipped with fixed mechanism;The fixed mechanism is used to connect the side wall of outer guide ring, and the self-lubricating wear pad is used to support the outer circle connected on the bottom of control ring.Effectively solve the problem that the income of power station is affected by frequently replacing steel ball and repairing sliding chute.

The invention provides an electronic commerce platform live broadcast multifunctional live broadcast frame with a nano coating, and belongs to the technical field of live broadcast tools. Comprising a frame body, the top of the frame body is provided with a device for fixing live broadcast equipment and equipment for adjusting the brightness of the live broadcast surrounding, the bottom of the frame body is also provided with a battery pack, and the battery pack is electrically connected with the equipment for adjusting the brightness of the live broadcast surrounding and the live broadcast equipment to realize electric energy transmission. Through the arrangement of the battery pack, the heat dissipation sleeve and the heat dissipation fins, the battery pack sleeves the outer wall of the sleeve and is located below the connecting frame to supply power to the light supplementing lamp and a mobile phone placed at the mobile phone support, integration of a power supply and the live broadcast frame is achieved, inconvenience caused by independently carrying a power bank is reduced, use is more convenient, and meanwhile, the service life of the mobile phone is prolonged. Heat generated when the battery pack works is dissipated through cooperation of the heat dissipation sleeve and the heat dissipation fins, stable operation of the battery pack is guaranteed, and the service life of the battery pack is prolonged.

The utility model belongs to the technical field of elevator counterweight, and particularly relates to a counterweight box for a traction type elevator, which comprises a box body, the box body comprises a top plate, a bottom plate, side plates and a counterweight cavity enclosed by the top plate, the bottom plate and the side plates, a plurality of positioning columns are arranged between the top plate and the bottom plate, and a plurality of vertically arranged large counterweight blocks are arranged in the counterweight cavity. The large balancing weight is connected with the positioning column in a clamped mode, a positioning groove extending from the side wall to the middle is formed in the large balancing weight, a fixing block is installed on the positioning groove in a matched mode, a plurality of installation grooves capable of containing the small balancing weight are formed in the large balancing weight on the top, and the installation grooves are symmetrically distributed in the large balancing weight. According to the utility model, the positioning column is matched with the fixing block to position the large balancing weight, the phenomenon of eccentric wear of the guide rail is prevented, when a worker debugs the balancing weight, the balance weight is debugged by increasing or reducing the weight of the small balancing weight, and the small balancing weight is convenient to disassemble and only needs to be taken out from the mounting groove.

The utility model relates to the technical field of plunger pumps, in particular to a high-flow plunger pump with a rotatable plunger. Comprising a power end, a fluid end and a connecting assembly, a middle rod of the power end pushes a plunger to do reciprocating rectilinear motion through the connecting assembly, pressurization of a medium in the fluid end is achieved, the connecting assembly comprises a clamping sleeve, a clamping ring, a transmission ball and a ball seat, the clamping ring is fixed to a clamping groove of the plunger, and the plunger and the clamping ring are sleeved with the clamping sleeve. The clamping sleeve is fixedly connected with the middle rod, a hole for fixing the transmission pin is formed in the clamping sleeve, a sliding groove is formed in the outer surface of the plunger, the lower end of the transmission pin is located in the sliding groove, a hemispherical groove is formed in the end of the plunger, a hemispherical groove corresponding to the hemispherical groove is formed in the ball seat, and the ball seat is arranged in a groove formed in the end of the middle rod. And a spring is arranged at the bottom of the ball seat. By applying the eccentric wear-resistant plunger, the eccentric wear phenomenon of the plunger can be effectively avoided, and the positive effects of prolonging the service life of the plunger and reducing the maintenance cost are achieved.

The utility model relates to the technical field of measurement while drilling, and discloses positive pulse measurement while drilling equipment, which comprises a positive pulse measurement while drilling instrument body, two sides of the positive pulse measurement while drilling instrument body are respectively connected with a mounting seat, a sliding sleeve is connected between the mounting seats in a sliding and sealing manner, and the sliding sleeve is connected with the positive pulse measurement while drilling instrument body. A spring is connected between the sliding sleeve and the mounting seat, a centralizing sleeve is connected to the sliding sleeve, and a plurality of cutting grooves are evenly distributed in the circumferential direction of the centralizing sleeve in an array connection mode. Compared with the prior art, the centralizer has the advantages that collision between the centralizer and the cylinder wall is relieved conveniently, the service life is prolonged, impacts and scouring of virtual mud cakes when encountering resistance are relieved conveniently, the centralizing efficiency is improved, and the measuring precision is guaranteed.

The utility model relates to the technical field of oil extraction equipment, in particular to an adjusting type high-temperature and high-pressure injection and production sealer which comprises a four-way main body used for a polish rod to penetrate through, a connecting body is installed at the upper end of the four-way main body, and an upper adjusting assembly is arranged above the connecting body. At least part of the upper adjusting assembly and at least part of the lower adjusting assembly are provided with adjusting spaces for transverse adjustment and eccentric adjustment, the upper adjusting assembly and the lower adjusting assembly solve the problem that the polish rod and the sealer are synchronous, centered and coaxial, the adjusting range can reach 12 mm, the eccentric wear phenomenon is solved to the maximum extent, the service life is prolonged, and the service life is prolonged. Secondly, the first valve body and the second valve body solve the well control safety problem of the sealer under high temperature and high pressure, the automatic valve ball blowout preventer has the function of automatically and rapidly sealing a well mouth when a polished rod is broken and disengaged, the high temperature resistance of the sealer is greatly improved through the design of a sealing piece, and the service life of the sealer is prolonged. The method is suitable for oil well high-temperature steam huff and puff and oil well injection-production integrated processes.

The utility model provides a positioning mechanism for punch -die belongs to die positioning technical field, including lower mould and upper die, the lower mould is located upper die below, fixed in the cylindrical of lower mould top, fixed in the positioning sleeve of cylindrical top, the detection groove of axial equidistance is opened in the outside wall of positioning sleeve, is located in the inside detection groove's judgment board, is located in the spring of judgment board outside wall, the two half ring grooves of symmetry is opened in the lower mould top close cylindrical outside position department, the three -phase motor of fixed in the lower mould inside close cylindrical just below position department, the utility model discloses whether the eccentricity between positioning sleeve and positioning rod is produced through the difference change of the ranging value produced to judge, avoids the positioning rod long -time to positioning sleeve in one direction rubs, avoids the eccentric wear of guide bush and guide column in mould in various factors causes, is convenient for timely maintenance and maintenance, guarantees the precision of positioning mechanism positioning in mould.

The present invention belongs to the field of stone processing technology, and in particular, relates to a stone slab cutting device and method thereof, including a cutting table and a displacement drive mechanism installed on the end face of the cutting table, a control cabinet is installed on the side wall of the cutting table, and the displacement drive mechanism is electrically connected to the control cabinet, and also includes: a mounting plate, the mounting plate is installed on the driving end of the displacement drive mechanism, and a cutting shell is installed on the end of the mounting plate. During the cutting process, the present invention can automatically adjust and offset the reaction force applied by most of the cutting resistance based on the temperature of the saw blade, and try to avoid eccentric wear on the shaft of the circular saw blade, thereby improving the cutting stability of the circular saw blade. At the same time, based on the cutting temperature of the circular saw blade and the vibration frequency and amplitude of the circular saw blade, it can automatically remind personnel to check and maintain the circular saw blade to help improve the cutting quality.

The invention relates to a forward and reverse adjustment submersible screw pump which comprises a shell, and a driving part, a stator and rotor assembly, an adjusting shaft, an adjuster and a limiter which are arranged in the shell. The driving part is used for providing rotation driving force for the rotor, so that the rotor and the stator rotate relatively, and oil extraction is achieved. The screw pump shell is positioned through the oil pumping pipe fixed underground, so that the rotor can be positioned through the limiting stopper, in addition, the adjuster can convert rotary motion carried out together with the adjusting shaft into rotary motion independent of the adjusting shaft, the adjuster is in threaded fit with the adjusting shaft, and the adjusting shaft is in threaded fit with the adjusting shaft. Axial displacement can occur between the adjuster and the adjusting shaft, so that the gap between the stator and the rotor is accurately adjusted.

The utility model provides an anti-eccentric-wear shield cutter, and relates to the technical field of shield tunneling machine cutters. The cutter body is rotationally arranged on the outer side of the cutter shaft in a sleeving mode through a bearing, and a cutter ring is arranged on the cutter body; the number of the end covers is two, and the two end covers are fixedly arranged on the cutter shaft in a sleeving mode and located at the two ends of the cutter body correspondingly; the sealing element is arranged at the end part of the end cover and can slide along the axial direction of the cutter shaft; and the elastic piece is arranged on the end cover and acts on the sealing piece, so that the sealing piece is pressed against the end part of the cutter body. When the anti-eccentric-wear shield cutter works, under the elastic force effect of the elastic piece, the sealing piece is pressed to abut against the end of the cutter body, and therefore it is guaranteed that after the anti-eccentric-wear shield cutter works for a long time, the sealing piece still has the good sealing effect, the reduction of the sealing performance is delayed, and the service life of the cutter is prolonged. And the eccentric wear phenomenon of the cutter ring caused by the fact that sundries such as muck, cooling liquid and cement grout permeate into the bearing is prevented.

The utility model discloses a low-vibration high-lift spiral constant-pressure pump, and belongs to the technical field of water pumps. Comprising two pump shells which are buckled oppositely and internally form a spiral mounting cavity, an impeller horizontally mounted in the spiral mounting cavity through a pump shaft, and a buffer base mounted at the bottom ends of the pump shells; the guide vanes at the water inlet can guide fluid to flow into the impeller at an axial uniform speed, inlet vortex loss is reduced, kinetic energy of the fluid is converted into pressure energy more efficiently, the guide ribs at the water outlet can reduce outlet pressure fluctuation, lift stability is improved, vibration excitation sources caused by fluid impact are reduced, and the service life of the impeller is prolonged. The bottom end of the spiral constant-pressure pump is connected with the buffer base, the vibration amplitude of the pump body is directly reduced, the vibration transmissibility is reduced, and the abnormal vibration risk is reduced; in short, the spiral constant pressure pump has the characteristics of low vibration and high lift, and is suitable for popularization.