68results about How to "Reliable installation and positioning" patented technology

The invention discloses a refrigerator shelf assembly and a refrigerator provided with the same. The refrigerator shelf assembly comprises a shelf, shelf supports and locking devices, wherein the shelf comprises a horizontally-positionedshelf body; the shelf supports extend vertically, are arranged on the inner wall of the refrigerator and are provided with a plurality of positioning holes formed in the vertical direction of the shelf supports at intervals, and the shelf is hung on one of the positioning holes of each shelf support; and the locking devices are connected with the shelf and matched with certain positioning holes to lock the shelf on the shelf supports. According to the refrigerator shelf assembly provided by the embodiment of the invention, the shelf can be locked to the shelf supports through the arranged locking devices, the shelf is mounted and positioned more stably and more reliably, and accordingly the situation that theshelf falls off the shelf supports due to vibration of the refrigerator can be avoided.

The invention relates to a cam system of a computerized flat knitting machine and discloses a three-station knitting cam system. Three states of knitting, tucking and non-knitting can be simultaneously implemented on a knitting function. The three-station knitting cam system has simple structure, is easy to install, use and maintain and has low processing and manufacturing cost. The three-station knitting cam system comprises a rectangular cam bottom plate. An inverted V-shaped cam, a knitting cam pair, a needle protecting cam pair, a density cam pair, a needle transferring cam, a middle cam, a needle guiding cam, a composite upthrowing cam, a needle selecting and protecting cam, a needle selector pair, a needle selecting and upthrowing cam pair and a needle selecting and lower needle protecting cam are bilaterally symmetrically arranged on the cam bottom plate, wherein left and right knitting cams of the knitting cam pair, the needle transferring cam and left and right needle selecting and upthrowing cams of the needle selecting and upthrowing cam pair are all movably embedded and connected with the cam bottom plate so as to move vertically to the plate surface of the cam bottom plate; the left knitting cam is homonymously linked with the left needle selecting and upthrowing cam; the right knitting cam is homonymously linked with the right needle selecting and upthrowing cam; and other cams are all fixed on the same plate surface of the cam bottom plate.

The invention provides an electromechanical prosthetic arm for multitype of vocational and technical work. The prosthetic arm includes an upper limb body and a bionic hand, and at least one of a reciprocating tool part, a first rotary movement tool part and a second rotary movement tool part; the front end of the upper limb body is provided with an installation position; the bionic hand, the reciprocating tool part, the first rotary movement tool part and the second rotary movement tool part include shells; the two opposite inner sidewalls of the installation position are respectively providedwith slide grooves; the two opposite side surfaces of the shells are provided with slide rails; the slide rails can match the slide grooves; the shells are inlaid with racks; rotatable gears are arranged in the installation position; the gears mesh with the racks and are in coaxial fixing connection with ratchets; and the ratchets match one ends of pawls, and the other ends of the pawls are connected to rotary type electromagnets. A method for using the prosthetic arm to saw objects is also provided.

A connector socket comprises a shielding shell, an insulating body and two baffles disposed on two opposite sides of the insulating body, and further comprises two rows of contact terminals and a spacer all embedded into the insulating body, the insulating body comprises a base and a tongue plate connected to a front end of the base, the two rows of contact terminals are exposed from two opposite sides of the tongue plate, respectively, the two baffles are disposed to correspond to the sides where the two rows of contact terminals are located, respectively; the spacer is located between the two rows of contact terminals so as to isolate the two rows of contact terminals from one another; a plurality of positioning holes for reinforcing the firmness of connection between the spacer and the insulating body are formed on the spacer.

The invention discloses a high-stability and firmly-mounted fixed wing aircraft wing. The high-stability and firmly-mounted fixed wing aircraft wing comprises a first wing and a mounting groove; the mounting groove is formed in the lower end of the left side of the first wing; the first wing is connected with the mounting groove in a sleeving manner; a fixing clamping seat is arranged to penetratethrough the surface end of the lower end of the left side of the first wing; and the fixing clamping seat is connected with the first wing in a through manner. According to the high-stability and firmly-mounted fixed wing aircraft wing, by arranging a support reinforcing plate at the perpendicularly intersected part of the first wing and a second wing, the support reinforcing plate can enable a suffered impact force to be stable to prevent a phenomenon that the first wing and the second wing cannot fall off; and therefore,damages of the first wing and the second wing caused by fall-off are avoided so that the service life of the integral structure of the fixed wing aircraft wing can be prolonged; and moreover, influences caused by factors such as a clearance and a manufacturing error areeliminated while the connecting strength between the first wing and an aircraft body and the connecting strength between the second wing and the aircraft body are guaranteed.

A novel hand-pressing type multipurpose rotary mop rod comprises a mop rod body and a mop head. A rotary seat capable of rotating relative to the mop rod body is sleeved on the mop rod. Support rods capable of closing up along the rod when the support rods are not used and are supported on a bucket is hinged to and installed on two sides of the rotary seat opposite to the mop rod body and are placed on the upper edge of the bucket. The rotary seat and the support rods are arranged on the mop rod body, the washing of the mop head can be achieved through match of the rotary seat and the support rods, and the novel hand-pressing type multipurpose rotary mop rod is simple in structure and low in manufacture cost, does not need a special mop bucket. Due to the fact that the support rods adopt extensible sleeve-connection structures, the adjustment can be performed according to the bucket size and the mop size, the requirement of any household mop bucket can be met, and an application range is wide.

The invention aims at providing a ship hull manhole typhoon-resistant tooling device with simple structure, strong safety and convenient installation. The tooling device comprises a locking device, amanhole through which a person can enter the cabin and a manhole typhoon resistant tooling. The locking device comprises an annular vacuum concave sheet metal arranged on the periphery of the manhole,and the side wall of the annular vacuum concave sheet metal is provided with a first through hole. The first through hole is provided with a vacuum cover plate adapted to the first through hole, theaxis of the first through hole and the geometric center of the vacuum cover plate are positioned on the same straight line, a plurality of external bolts are arranged on the upper surface of the vacuum concave sheet metal, and the external bolts are adapted to the manhole typhoon-resistant tooling. The tooling device is applied to the technical field of manhole safety protection.

The invention discloses a double-ship counter-pulling positioning method of a breakwater barrel type component. The method comprises the following steps: when the tide level is high, a main pulling ship is arranged on one side of the barrel type component, a positioning ship is arranged on the other side of the barrel type component, the centers of the two ships and the barrel type component are arranged on the same straight line, three groups of anchor machines are arranged on each of two ships, each group comprises two anchor machines, each group of anchor machines at two ends of the positioning ship are connected with positioning anchors via cross mooring ropes, a group of anchor machines in the middle are connected with the barrel type component via the cross mooring ropes, two groups of anchor machines in the main pulling ship are arranged on the left side and the right side respectively and are connected with the positioning anchors via two open mooring ropes, the other group of anchor machines are arranged at the ship bow and are connected with the barrel type component via the cross mooring ropes so as to counter pull the barrel type component; when the distance between the barrel type component and the mud surface is 1.3-1.7m, the barrel type component is taken to the mounting position for waiting for falling of the tide; when the distance between the barrel type component and the mud surface is 0.5-0.8m, the barrel type component is accurately positioned, exhausts and sinks at the same time; the barrel type component drains water and sink after the barrel type component touches the mud until the sinking depth of the barrel in the mud is 2.0-3.0m, then the positioning is completed. Through the double-ship counter-pulling positioning method of the breakwater barrel type component, the barrel type component is safely and quickly positioned and mounted via counter pulling of double ships.

The invention discloses a special MC (Methyl Cellulose) nylon wheel for a combined oilfield and belongs to the technical field of a nylon product. The special MC nylon wheel comprises MC nylon wheel bodies made of MC nylon, rigid bushing blocks and a wheel axle. The special MC nylon wheel is characterized in that the MC nylon wheel body at least comprises two rigid bushing blocks which are connected in concentric bushing; a bolt is used for fixedly connecting two adjacent MC nylon wheel bodies; the rigid bushing blocks are arranged on the wheel axle by a bearing; the inner walls of the two ends of the rigid bushing blocks are respectively provided with annular grooves for supporting the bearings; the bearings are supported in the annular grooves; the two ends of the MC nylon wheel are provided with locking dust-prevention end covers for covering the rigid bushing blocks and the bearings, and the locking dust-prevention end covers are respectively and fixedly connected with the MC nylon wheel bodies and the rigid bushing blocks through the bolts. The special MC nylon wheel for the combined oilfield is simple and reasonable in structure, easy to product and low in cost. With the adoption of the special MC nylon wheel for the combined oilfield in oilfield machinery industries, corrosion, noise and large abrasion produced by the contact of a cast iron and a steel wire rope are avoided, and the service life of the steel wire rope is prolonged.

The invention belongs to a non-destructive nuclear power station testing technology and particularly discloses an ultrasonic water-logging testing and positioning drive device for a small pipeline. The ultrasonic water-logging testing and positioning drive device comprises a peripheral sleeve, a peripheral mandrel in the peripheral sleeve and an axial component connected with the peripheral mandrel, wherein a peripheral driving gear and a peripheral driven gear which are meshed are arranged in the peripheral sleeve, the peripheral driven gear is connected with the peripheral mandrel, and the peripheral driving gear is driven through a motor. The axial component at the front end is driven to rotate by designing the peripheral mandrel, meanwhile makes an axial slide block to perform axial movement on a guide rail through drive matching between a bevel gear pair and a spur gear pair and conveying of a conveying belt, and accordingly can drive and position relevant positioning devices.