294results about How to "Increase the carrying area" patented technology

The invention discloses a light five-cylinder plunger pump. The light five-cylinder plunger pump comprises a power end assembly and a hydraulic end assembly, wherein the power end assembly is connected with the hydraulic end assembly; the cylinder spacing of the light five-cylinder plunger pump is 9in; the power end assembly comprises a crank shaft, the crank shaft comprises six crank necks and five crank throws, the crank necks and the crank throws are fixedly connected, the distance between rotating centers of the crank necks and the crank throws is 101.6 mm, and the stroke distance of the light five-cylinder plunger pump is 203.2 mm. According to the light five-cylinder plunger pump, power is increased by increasing stroke, reducing transmission ratio and improving bearing capacity, andmeanwhile, dead weight is reduced by reducing the cylinder spacing, the tooth number of a big gear and the tooth thickness of the big gear and a pinion. The light five-cylinder plunger pump meets conditions of working in the area with severe well cementing operation conditions in aspects of weight and power simultaneously, and working efficiency is increased.

The invention discloses a high-power five-cylinder plunger pump. The plunger pump comprises a power end assembly, a hydraulic end assembly and a reduction gearbox assembly, wherein the power end assembly comprises a crankshaft box body, a crosshead box body and a spacer frame; the crankshaft box body, the crosshead box body and the spacer frame are sequentially connected; the hydraulic end assembly is fixed on the spacer frame; the reduction gearbox assembly is fixed on the crankshaft box body; and the cylinder spacing of the five-cylinder plunger pump is 13-14 inches, so that a guarantee is provided for the output of high power of the five-cylinder plunger pump. According to the high-power five-cylinder plunger pump, the problems that the area of a shale gas fracturing well site is narrowand the number of required fracturing equipment is relatively large are effectively solved, thus reducing the use of equipment, and facilitating the arrangement of the well site.

The invention discloses a five-cylinder plunger pump with an integral power end structure. According to the five-cylinder plunger pump, an integral welding structure is adopted for a crankshaft box body and a crosshead box body in a five-cylinder plunger pump power end assembly, so that the structural strength of the power end assembly is higher, the supporting stability is better, and the whole pump vibration can be reduced; the cylinder spacing is 13-14 inches, the bearing area of connecting rods, crossheads and bearing bushes is increased, a guarantee is provided for the output of the high-power of the five-cylinder plunger pump, the high-power five-cylinder plunger pump can effectively solve the problem that the shale gas fracturing well site area is narrow and the required fracturingequipment is relatively large, the use of equipment can be reduced, and the wellsite arrangement is facilitated; the 11-inches long-stroke design can better realize large-displacement operation requirements and improve the operation efficiency; and according to the multi-point supporting design of crankcase bodies, crosshead box bodies and the hydraulic end assembly, the supporting strength of thefive-cylinder plunger pump can be improved, the vibration is reduced, the high-load operation is better guaranteed, and the operation is more stable.

A wear assembly for excavating equipment that includes a base, a wear part and an improved locking arrangement that provides improved stability, strength, durability, safety and ease of use. The locking arrangement includes a hammerless lock that is pivotally moved between hold and release positions, wherein the fulcrum is set forward of the bearing surface engaging the wear part. The lock can be manipulated by a threaded member or pry tool. The lock further includes bearing surfaces that enhance stability and reduce wear.

A wear assembly for excavating equipment that includes a base, a wear part and an improved locking arrangement that provides improved stability, strength, durability, safety and ease of use. The locking arrangement includes a hammerless lock that is pivotally moved between hold and release positions, wherein the fulcrum is set forward of the bearing surface engaging the wear part. The lock can be manipulated by a threaded member or pry tool. The lock further includes bearing surfaces that enhance stability and reduce wear.

The invention relates to a mechanical stretching device for an electric rocking chair of a movable sofa. The mechanical stretching device comprises a left-side member, a right-side member and an electric device, wherein the electric device comprises a motor, a motor fixing bracket, a guide rail bracket, a motor fixing tube, a motor moving sliding block and a motor guide rail, the motor fixing tube is mounted on the motor fixing bracket, the motor fixing bracket is rotatably connected with a transmission connecting member, and the transmission connecting member is rotatably connected with the guide rail bracket through a third rotating shaft; a first guide rail is arranged on the guide rail bracket and is in an circular arc shape; the third rotation shaft is arranged in the first guide rail; one end of the motor is connected with the motor moving sliding block, the other end of the motor is rotatably connected with a leg square tube, and the motor is mounted on the motor guide rail; the motor moving sliding block is fixed on the motor fixing tube and is in sliding connection with the motor guide rail. According to the mechanical stretching device, the motor fixing tube is provided with a sunken part, and the motor moving sliding block is fixed in the sunken part. As the electric rocking chair is endowed with an electric function, the automatic degree and the comfort of the sofa are improved.

A hybrid roller / silent chain of the present invention has the wear resistance of a roller chain combined with the noise performance of a silent chain. This is accomplished with the use of transverse load-bearing elements that allow increased bearing area for the articulating members of the chain by allowing load to be transmitted through both the inside and outside diameter of the element in the same plane. In some embodiments, the transverse load-bearing elements are bushings. In other embodiments, the elements are projections extending from non-guide row inside links.

The present invention provides a technological process for large-scale breeding bernisia tabaci genn by using tobacco and industrial production of eretmocerus spp. by using nymph of bernisia tabaci genn. Said invention adopts four-chamber eretmocerus spp. breeding method, mechanical collection, separation and purification, low-temp. short-period storage and annual industrial breeding eretmocerus spp. The host plant is tobacco leaf, it can bear lots of bernisia tabaci genn, and is high in production efficiency and is favorable for collection, the bernisia tabaci genn can be used as host of eretmocerus spp, so as to ensure controlling effect in field.

The invention relates to a method for improving the pile group bearing capacity by means of reticular pile foundations. A pile group is composed of a plurality of sets of reticular pile foundations, each reticular pile foundation is formed by arranging a plurality of single piles which vertically penetrate into a soil body, and the method comprises the following steps: arranging the single piles in the reticular pile foundations in each set according to a certain shape, and respectively arranging a pile beam for connecting every two adjacent piles at the bottom and middle positions of the adjacent single piles so as to increase the bearing areas of the reticular pile foundations and enable the pile beam and the single piles to be of an integral structure. The method has the advantages that the pile group is simple in structure, the pile beam for connecting the adjacent single piles is additionally arranged at the bottom and middle positions of the pile foundations so as to form the whole stable pile group structure, pile feet are additionally arranged on each single pile so as to increase the whole bearing areas of the reticular pile foundations, the whole bearing capacity and the anti-toppling capacity of the pile group are effectively improved, and in addition, compared with a conventional pile group with the same bearing capacity, the length of the pile group is greatly shortened.

An assembly includes a first part made of composite material and a second part, which parts are held one against the other by at least one fastener system having a fastener element with a head from which there extends a shank. The fastener system further includes a bushing, the bushing including a collar presenting an inside face and an outside face of conical shape. The head of the fastener element bears against the inside face of the collar, while the outside face of the collar bears against a countersink formed in the first part.

The invention discloses a mechanical-hydraulic double-acting release rotary tail pipe hanger, and belongs to the technical field of manufacturing downhole tools for oil and gas well cementing operations in oil and gas development. The mechanical-hydraulic double-acting release rotary tail pipe hanger comprises a short drill pipe, an upper joint, a release mechanism, a double male joint, a male and female joint and a lower joint. The short drill pipe, the upper joint, the double male joint and the lower joint are connected in a threaded manner from up to down sequentially. The mechanical-hydraulic double-acting release rotary tail pipe hanger further comprises a loading mechanism comprising a hanger set hydraulic cylinder, a light-load bearing, conjoined twin slips, a conjoined twin cone, a heavy-duty bearing and a central pipe. The hanger set hydraulic cylinder, the light-duty bearing, the conjoined twin slips, the conjoined twin cone and the heavy-duty bearing are arranged on the central pipe from down to up sequentially. The central pipe is connected at the lower end of the male and female joint. The heavy-duty bearing is arranged between the male and female joint and the conjoined twin cone. By the aid of the mechanical-hydraulic double-acting release rotary tail pipe hanger, a tail pipe can rotate when the a tube pillar enters, after the hanger is set and is separated from a releasing release, the slips and the bearings bear the hanger, and functions of rotating and well cementing of a heavy-duty tail pipe is realized.

The invention provides a self-adaptive feet-lock bolt integrated device applied to the tunnel stepwise excavation process and an application method thereof so that effective control of broke and weak surrounding rock tunnel large deformation is realized. A large-area arch springing bearing plate is arranged at the steel arch springing part so that arch springing bearing area is enlarged and arch springing bearing force is increased; integral settlement of the tunnel is measured by an arch springing bearing plate slide surface scale; feet-lock bolts are self-adaptive to different angles of installation via elastic ball nuts; meanwhile, the size of the applied pre-stress can be reflected by the amount of compression of the elastic rubber ball nuts, and impact energy is absorbed simultaneously so that preliminary supporting of the tunnel is enabled to be more systematical and safer, and preliminary supporting time is shortened by the prefabricated form.

The present invention relates to a high pressure large wrap angle running-in type porous variable section closing air floating ball bearing which is composed of ball head, ball socket, air feed locker, position sleeve and fixing sleeve. The ball socket is disposed with single row or multiple rows of air intake channels, air discharge uniform pressure groove, air intake hole and air discharge hole. The air feed locker, the position sleeve and the fixing sleeve are assembled in the air intake channel, the air enters the bearing air film gap through the flow channel formed the air intake channel to supply support force which is balance with the outer load acted on the ball head. The air feed locker is composed of a curved surface gradually expanding mixing chamber or a cone surface gradually expanding mixing chamber and the air intake small holes. The beneficial effect of the invention is that: the bearing area is increased and the bearing force is greatly improved. The air feed locker can be disassembled conveniently, the pressure dive phenomenon at the transition place of the air intake channel and the air film will be improved under the working condition of high pressure and air film, the bearing force is far more than conventional air floating ball bearing. The bearing is adapted to ground air floating simulation equipments that need heavy load, precision heavy machine, measure device and large space structure.

The invention discloses an overturn-resistant self-elevating platform pile shoe which comprises an iron-plate-shaped hollow flat circular shell body connected by an upper top board and a lower bottom board. At least three tubular sliding ways fixedly connected with the shell body are horizontally arranged along the circumference wall of the shell body in an equally spaced mode; the front end of each tubular sliding way is provided with a limiting ring and a sealing ring, the rear end of each tubular sliding way is provided with a flange, a hydraulic oil cylinder and at least one section of telescopic pipe are sequentially arranged from the rear end to the front end, one end of a piston rod of the hydraulic oil cylinder is connected with a reinforced bar inside the shell body, a rod head arranged at the other end of the piston rod is connected with the inner end face of the front end of the telescopic pipe, the front end of the telescopic pipe is closed, and the rear end of the telescopic pipe is provided with a flange; the upper top board of the shell body is further provided with a watertight stuffing box, a watertight door is arranged at the bottom of the lower bottom board, and the hydraulic oil cylinder is communicated with a hydraulic servo system installed on a self-elevating platform through a high-pressure oil pipe. The overturn-resistant self-elevating platform pile shoe has the advantages of being flexible in operation, safe, reliable, resistant to overturning and sliding and strong in puncturing capacity.

An improved umbrella includes a durable hub including a number of spherical rotating joint knuckles captured in a hub body. The joint knuckles provide rotational movement of rib and spreader elements which support a flexible umbrella cover. The joint knuckles provide increased bearing surface area that increases ease of use and durability. The hub design enables identical hub bodies to be used for a spreader hub and a rib hub.

A spacer for a snowboard that is compatible with several bindings and snowboards, and that absorbs and dampens shocks and vibrations as they occur while riding a snowboard. The spacer provides a simplified mounting mechanism to connect different bindings with a snowboard without negative loads and forces influencing the snowboard. The spacer has at least one central part and at least one lateral part, which includes a dual density material construction for shock absorption and dampening. The central part has a fixing device to provide a direct or indirect mechanical connection between a binding and a snowboard. The fixing device is preferably connectable with different binding types available on the market. The at least one lateral part is preferably affixed to the central part and serves to transfer load between one of a tip or a heel of a snowboard boot and a snowboard.

The invention discloses a bottom enlarged cast-in-place pile with dilled hole, wherein: the cast-in-place pile is arranged with an enlarged footing on the bottom. The enlarged footing of the invention formed by mechanical pressure and enlarged base drill bit enlarges the loaded area of the pile end and can provide more than two over three pulling-resistant force of the whole pile. The invention can satisfy the engineering demand of pulling-resistant load bearing, reduce the length and number of pile, simplify the construction and reduce cost.

The invention is directed to an improved spacer (1) with at least one centre part (2) and at least one lateral part (3) comprising at least two different materials. The at least one lateral part serves as a load transfer and distribution mean between one of a tip or a heel of a snowboard boot (40) and a snowboard (20).

A method of hot tapping into a multiple string configuration for obtaining access to the production tubing without removing outer layers of casing by providing a multiple casing string that includes at least an outer casing and an inner casing or production string; mounting a clamp assembly around the wall of the outer casing; hot tapping a small opening through the outer casing wall to capture any pressurized fluid through the opening; cutting first and second large openings through the wall of the outer casing to access the inner casing, each opening being approximately 180 degrees from the other opening; through the first opening, drilling a small hole through the wall of the inner casing to capture any pressurized fluid through the opening in the inner casing; and inserting an anvil through the second opening to contact and stabilize the wall of the inner casing to prevent the casing from moving while the casing is drilled.

The invention discloses a display module and a display device, and belongs to the technical field of display. The display module comprises a backlight module and a display panel which are oppositely arranged and a through hole, the display panel at least comprises a first substrate and a second substrate which are oppositely arranged, the first substrate comprises a first side surface and a firstsurface, the second substrate comprises a second side surface and a second surface, the intersection line of the first side surface and first surface is a first intersection line, the intersection line of the second side surface and second surface is a second intersection line; the display panel comprises a first cross section which passes through the through hole and is vertical to a light emitting surface, the intersection point of the first cross section and first intersection line is a first intersection point, the intersection point of the first cross section and second intersection lineis a second intersection point, and the connecting line of the first intersection point and the second intersection point forms an acute angle with the first surface. The display device comprises thedisplay module. According to the invention, light leakage in the through hole can be avoided, the influence of the overflow of a shading sealant on the display and shooting functions of the camera arranged in the through hole can be reduced, and the product quality is improved.

The invention relates to an electric power circuit carrying van which comprises a base plate for bearing devices. Walking wheels are installed on the bottom surface of a base, a push rod is installed at the rear end of the base, openable and closable side plates are installed on two sides of the base, the front end of the base is movably connected with a face plate, and roller groups are installed on the inner wall of the face plate and the inner walls of the side plates respectively. The face plate at the front end and the side plates on two sides are of openable and closable structures, so that the devices can be pushed onto the carrying van in any direction and fixed through a fixing frame. If the area of the bottom surface of a certain device is larger than that of the base plate of the carrying van, the side plates on two sides can be opened to increase the whole bearing so as to complete transfer. For containing tools and instruments, the rear end of the electric power circuit carrying van is opened, and the tail ends of a longer insulation rod and other tools and instruments can extend out of the side. Due to the fact that the fixing frame is fixed to the base plate and has a supporting-lifting role on the extended portions of the insulation rod and other tools and instruments to form an internally-low and externally-high state, the insulation rod and other tools and instruments do not drop out in the transfer process.

A coupler for a rail wagon includes a coupler body. The body includes a shank and a head located at an end of the shank. A coupler latch member is mounted to an end of the head. The latch member includes a protruding portion for receipt in a recess of the head. The protruding portion includes at least two adjacent projecting lugs, and the recess includes at least two corresponding adjacent shoulders behind which each lug is located when the latch member protruding portion is received in the head recess.

An engineered perimeter rim board with machined or otherwise-formed modular recessed receptacles receives and secures I-joists and other manufactured joists at pre-designated spaces along the length of the rim board. The rim board provides pre-measured joist securement locations and structural enhancements by “locking” the joists into position. Receptacles machined / cut into the rim board may be of various shapes, such as a rectangular recess with a flat planar back wall, a profiled recess with curved top and bottom compartments, and / or an angled recess wherein two sidewalls converge to create a recess without a back wall for receiving joists at positions other than perpendicular to the rim board. The preferred 90-degree receptacle profile provides an I-joist web receiving slot for additional lateral support to help prevent joists from buckling, twisting or rolling over.

A hybrid roller / silent chain of the present invention has the wear resistance of a roller chain combined with the noise performance of a silent chain. This is accomplished with the use of transverse load-bearing elements that allow increased bearing area for the articulating members of the chain by allowing load to be transmitted through both the inside and outside diameter of the element in the same plane. In some embodiments, the transverse load-bearing elements are bushings. In other embodiments, the elements are projections extending from non-guide row inside links.

The invention discloses a water lubrication thrust bearing wit a ring grooves, relating to a thrust bearing. The invention solves the problems of bad performance of frictional wear, easy wear and cracking to a grinding disc, small bearing area, low bearing capacity, short service life, difficult fluid hydrodynamic lubrication, unreliable work process, complicated structure, large axial size, complicated processing process and high cost and so on of the prior thrust bearing. A friction surface (1) of the thrust bearing is provided with aequilate water grooves (2) along the radial direction, sector massive bearing surfaces is formed on the friction surface (1), and the sector massive bearing surfaces are provided with ring grooves (3). The water lubrication thrust bearing with the ring grooves has the advantages of high bearing capacity, long service life, easy fluid hydrodynamic lubrication, stable and reliable work process, simple structure, small axial size, simple processing process and low cost and so on. Practical application of the water lubrication thrust bearing with the ring grooves can improve whole device efficiency and reliability of water environment work machinery to a large extent, which brings better economic benefit and social benefit, and has better development potential and market prospect.

The invention relates to a combined PDC-thrust ball bearing long-life transmission shaft assembly. The combined PDC-thrust ball bearing long-life transmission shaft assembly comprises a transmission shaft, a lower TC movable sleeve, a lower TC static sleeve, a thrust ball bearing group, a PDC bearing group, an upper TC movable sleeve, an upper TC static sleeve and a transmission shaft shell, wherein the lower TC movable sleeve sleeves part of the shaft head of the transmission shaft; the lower part of the lower TC movable sleeve is connected with the transmission shaft; the lower TC static sleeve is mounted on the outer circumference of the lower TC movable cover in a matched manner; the lower TC static sleeve is connected with the lower end of the transmission shaft shell arranged at the outer circumference of the lower TC static sleeve; an anti-falling half ring, which is coaxial with the lower TC movable sleeve, is arranged at the upper end of the lower TC movable sleeve; the thrust ball bearing group and the PDC bearing group are sequentially mounted on the transmission shaft from top to bottom in a matched manner; the upper TC movable sleeve sleeves the upper part of the transmission shaft; the upper part of the upper TC movable sleeve is connected with that of the transmission shaft; the upper TC static sleeve is mounted on the outer circumference of the upper TC movable sleeve in a matched manner; a universal water-saving cap is also fixed at the upper end of the transmission shaft. The combined PDC-thrust ball bearing long-life transmission shaft assembly has the advantage that the overall service life of a screw drill can be effectively prolonged.

The invention provides a sliding type bearing assembly. The sliding type bearing assembly comprises two sliding rails and a tray, wherein the two sliding rails can be arranged in a case; the tray is connected between the two sliding rails in a sliding way; the tray comprises a bottom plate, two sidewalls and two sliding arms, and the two sidewalls upwards and vertically extend from two sides of the bottom plate, respectively; and the two sliding arms respectively and outwards extend from the top parts of the two sidewalls; one end of the bottom plate is protruded out of the two sliding arms; the two sliding arms can be respectively sleeved on the two sliding rails in a sliding manner; and the tray can be slipped, and then the parts, protruded out of the two sliding pars, of the bottom plate can extend out of the case. The sliding type bearing assembly is high in bearing capacity; and the bearing weight can be uniformly distributed while the bearing area is enlarged, so that the stress concentration can be avoided, and a server can be conveniently arranged.