69results about How to "Avoid contact damage" patented technology

The invention relates to a method of manufacturing a composite acoustic panel employed in an inlet passage of a gas turbine engine (1). The acoustic panel comprises a permeable face-layer (8), an impermeable backing sheet (9) and a sound absorbing layer (10) disposed therebetween. The method comprises a double polymerisation process for the face-layer and the remainder of the acoustic panel and finally a perforation step to perforate the face-layer according to a pre-determined perforation distribution (11.1, 11.2, 11.3, 11.4, 11.5).

A touch screen panel according to an embodiment includes an electrode forming part including a plurality of first electrode serials arranged in parallel on a substrate in a first direction and a plurality of second electrode serials arranged on the substrate to cross over the first electrode serials; and a routing wire forming part formed on the substrate, and including a plurality of first routing wires respectively connected to the plurality of first electrode serials and a plurality of second routing wires respectively connected to the plurality of second electrode serials.

The invention relates to a conveying joint device for cops and bobbins for spinning and doffing connection. The device comprises a stirring plate arranged at the joint between first pallet conveying track and a second pallet conveying track, a pallet output mechanism, a pallet input mechanism, multiple pallets and multiple pallet support assemblies. The multiple pallets and the multiple pallet support assemblies are used for placing cops and bobbins. The stirring plate is used for stirring pallets which are conveyed to the joint and. Clamping positioning of the above pallets is released. The stirring plate is coaxially installed onto a guide wheel. The pallet output mechanism is used for automatically conveying all pallets separated from the pallet support assemblies to the second pallet conveying track. The pallet input mechanism is used for automatically conveying all the pallets outputted by the second pallet conveying track to the pallet support assemblies of the first pallet conveying track. Therefore, the purpose of automatically conveying pallets in a reciprocating manner between an automatic winding machine and an automatic doffing and spinning machine is fulfilled. As a result, connection between the automatic doffing and spinning machine and the automatic winding machine is realized. The device is reasonable and compact in structure and helps reduce the conveying process. Spindle speed and production efficiency of the spinning machine can be greatly increased.

The invention provides a separating device for sea fish and sea shrimps and belongs to the technical field of aquatic product processing. The separating device solves the problem of separating sea fish and sea shrimps in the prior art. The separating device for sea fish and sea shrimps comprises a groove for fish, shrimps and seawater to pass through and fish and shrimp collecting devices. The separating device is characterized in that the groove comprises a bottom plate, a left lateral plate and a right lateral plate; electrodes are arranged on the left lateral plate and the right lateral plate; a magnet is arranged under the bottom plate; and the left fish and shrimp collecting device and the right fish and shrimp collecting device are arranged at the outlet position of the groove. The separating device separates the fish and the shrimps through electric stimulus response difference of the shrimps and fish, is not limited by relative sizes of the fish and the shrimps and is suitable for live fish and live shrimps.

A switch apparatus of the invention can avoid contact damage without inviting a drastic increase in a size even when applied to a high power source voltage and does not deteriorate return feeling to a neutral state. The switch apparatus includes a switch A for cutting off connection between one side driving input of a DC motor and a negative plate side power source, a switch B for cutting off connection between the other side driving input and the negative plate side power source, and a switch C for cutting off connection between the one side driving input and the positive plate side power source and connection between the other side driving input and the positive plate side power source, wherein the switch A and the switch B are normally-closed type switches and the switch C is a normally-open type switch. The switch C is opened at a predetermined time before the switch A or the switch B is closed, and cuts off in advance a power source route to avoid the occurrence of dead short-circuit. When the switch C has a slide type structure, switch feeling of contacts of the switch C can be improved.

The invention relates to the technical field of automatic cutting, and discloses an automatic cutting machine and a cutting method thereof. The adjustment amount of a cutting knife is obtained according to the position relation between the lowest end of the cutting knife and a table surface; the adjustment amount is the vertical distance between the lowest end of the cutting knife and the table surface; if the adjustment amount of the cutting amount is not 0, up and down position of the cutting knife is adjusted until the adjustment amount of the cutting knife is 0. When the automatic cutting machine adopts the method to conduct cutting, the position of the cutting knife can be adjusted in real time; the distance between the cutting knife and the table surface can be maintained; the lowest end of the cutting knife is enabled to be arranged above the surface of the table surface, so as to promote the cutting effect; not only is cutting ensured to be complete, but also contact and damage of the cutting knife and the cutting table surface can be avoided.

The invention discloses an anti-abrasion device for a casing pipe. The device comprises a rolling ball seat which is of a barrel-shaped structure, the rolling ball seat is arranged outside a pipe body in a sleeving mode, the inner wall of the rolling ball seat is provided with rubber, the outer wall of the rolling ball seat is provided with a support frame in the axial direction, and the support frame is provided with multiple rolling balls, the rolling balls protrude out of the support frame so that rolling can be achieved. According to the anti-abrasion device, the rubber is added to the inner side of a protecting cover, and metal-metal contact damage between the protecting cover and a drill pipe and an oil pipe is avoided; the rolling balls are added to the outer side of the protecting cover, when pipe columns are lifted or descended or vibrated or rotated, sliding friction among the pipe columns can be changed into rolling friction, and thus abrasion of the casing pipe is reduced.

The invention relates to a compacting intertillage weed extractor. The compacting intertillage weed extractor comprises traction equipment, a machine frame connected behind the traction equipment, a compacting wheel, a soil leveling plate group and a scratching shovel group, wherein the compacting wheel, the soil leveling plate group and the scratching shovel group are sequentially mounted on the machine frame from front to back, the soil leveling plate group comprises a plurality of soil leveling plates which are continuously arranged in the left-right direction, and the front ends of the soil leveling plates are connected with the machine frame through transverse springs; and the scratching shovel group comprises a plurality of scratching shovels arranged in the left-right direction, the scratching shovels are correspondingly located right behind the soil leveling plates, and the soil leveling plates are connected with the scratching shovels right behind the soil leveling plates through lever devices. According to the compacting intertillage weed extractor, the leveling plates and the scratching shovels are connected through the lever devices, the scratching shovels are driven to move up and down by means of the friction resistance difference of plants and soil on the soil leveling plates, and when the leveling plates slide on crop plants, the scratching shovels tilt to be higher than the ground, so that the scratching shovels are prevented from touching and damaging crops; and when the land leveling plates slide on the soil between two rows of crop plants, the scraping shovels are pushed to fall down and be inserted into the soil, and intertillage soil loosening and hoeing between the rows are carried out.

The invention provides a soil pollution detection apparatus, which belongs to the field of soil diagnosis, and solves the problems of poor detection precision of the current soil pollution detection apparatuses. The soil pollution detection apparatus comprises a detection probe and a material-taking rod presenting a hollow straight rod state, the top and the bottom of the material-taking rod respectively present an enclosing state and an opening state, a filter board capable of sliding up and down is arranged in the material-taking rod, an inner chamber of the material-taking rod is divided into an upper chamber and a lower chamber by a filter board, the upper chamber and the lower chamber are communicated through a filter aperture at the filter board, a screw is vertically arranged in theupper chamber, the lower end of the screw is fixedly connected with the filter board, a threaded aperture is arranged at the upper wall of the material-taking rod in a penetrating mode, the upper endof the screw passes through the threaded aperture, the screw is subjected to bolt joint with the threaded aperture, an air pump is fixed at one side of the upper end of the material-taking rod, a gasport of the material-taking rod is communicated with the upper chamber, the through hole is arranged at the sidewall of the upper end of the material-taking rod, the detection probe is arranged in athrough hole in a slidable mode, and a detection end of the detection probe is positioned in the upper chamber. The soil pollution detection apparatus has the advantage of high detection precision.