30results about How to "Reduce arching" patented technology

The invention relates to a powder storage device with a quantitative discharging function. The powder storage device is characterized in that a material containing barrel is mounted on an upper cross beam of a frame through a flexible connector; a quantitative discharging device is fixedly arranged below the material containing barrel; a discharging hopper is fixedly arranged below the quantitative discharging device; a dustproof cover is arranged on the discharging hopper in a sleeving way; the number of explosion-proof electromagnetic vibrators is two, the two explosion-proof electromagnetic vibrators are respectively mounted on a supporting base of the quantitative discharging device and a connecting base of the discharging hopper; the number of air hammers is two, one of the air hammers is mounted on the supporting base of the quantitative discharging device, and the other air hammer is mounted on a connecting plate of the discharging hopper. The powder storage device has the benefits that the powder storage device can be used for automatic quantitative discharging, transportation and storage of a lot of power stored; through the design of the structure and the adjustment of the vibration frequency of the explosion-proof electromagnetic vibrators, the arching and agglomeration phenomenon of the powder in the blanking process can be greatly reduced, so that smooth blanking is ensured; the power quantitative discharging is realized through real-time monitoring of power weight in the discharging process.

The invention discloses a finishing end heating method capable of preventing finishing end cracks from being generated in FCB welding, and relates to the field of material forming and control. The finishing end heating method capable of preventing the finishing end cracks from being generated in the FCB welding comprises the steps that a temperature control area in an isosceles triangle is preset in a welding finishing end area, the vertex of the isosceles triangle is located on a longitudinal welding seam, the bottom side of the isosceles triangle is perpendicular to the longitudinal welding seam, the length of the height of the isosceles triangle is a, and the length of the bottom side of the isosceles triangle is 2b; three yield strength sections and four thickness sections of a steel plate to be welded are defined; the a, the b and a temperature range T of the temperature control area are preset according to the yield strength section where the yield strength p of the steel plate 1 to be welded is located and the thickness section where the thickness d of the steel plate 1 to be welded is located; the temperature control area is heated, the longitudinal welding seam is welded, and the temperature in the temperature control area reaches T when welding is reaches the vertex of the isosceles triangle from the initial welding end of the longitudinal welding seam; heating is stopped, and welding is stopped when welding reaches the welding finishing end of the longitudinal welding seam; cooling is carried out, and a welded steel plate sample is formed. According to the finishing end heating method capable of preventing the finishing end cracks from being generated in the FCB welding, the probability of generating cracks at the finishing end of the welding can be reduced, the phenomenon of arch cambers on a plate surface can be controlled, deformation can be reduced, and the technology can be simplified.

The invention discloses a decorative board comprising a long or square board body which is provided with a first side surface and a second side surface which are opposite. The decorative board is characterized in that at least two paths of spaced joint tongues are bulged on the first side surface from top to bottom, and the second side surface is provided with at least two paths of spaced connecting troughs matched and installed with the joint tongues on the first side surface from top to bottom. Two paths of joint tongues and connecting troughs are provided by the invention; compared with the single chase mortise matching structure, the matching area of a board body trough and tenon joint is enlarged, frictional force is increased, and the board body trough and tenon joint are tightly meshed, have favorable stability and high joint strength; in addition, because the connecting trough and the joint tongues are in multilayer structure, water is stopped by the highest connecting troughs or joint tongues when water is used for cleaning the board body, so that water can not seep into other lower connecting troughs or joint tongues, and the phenomenon that the board body deforms or arches because of water penetration can be reduced. The design of long and short mortises can save more timber resource than common single tenon and brings better economic value.

The invention discloses dispensing equipment, which comprises a machine frame and a control system for controlling operation of the dispensing equipment, wherein at least two rows of stock bins are arranged on the machine frame; each row of stock bins comprise at least four stock bins; a cloth bag type pneumatic arch breaking structure for preventing raw materials from being arched is arranged on the middle part of each stock bin; a crushing and stirring structure is arranged on the lower part of each stock bin; a spiral feeder is arranged at the bottom of each stock bin; each spiral feeder is arranged vertical to the stock bin; a pneumatic valve is arranged on the front part of an outlet of each spiral feeder; a discharging port for leading out the raw materials is formed below the outlet of each spiral feeder; rails are arranged on the machine; the number of the rails is matched with that of one row of stock bins; a material vehicle matched with the stock bins and capable of moving along the rails is arranged on the rails; a vehicle hopper is arranged on the material vehicle; and an electronic scale is arranged between the vehicle hopper and the material vehicle. The dispensing equipment reduces the material arching phenomenon, enables the material proportion to be more accurate, improves the production efficiency and reduces the labor intensity of workers.

The invention discloses a small-sized transformer. The small-sized transformer comprises an iron core, an upper pair of clamping elements and a lower pair of clamping elements, wherein the upper pair of clamping elements and the lower part of clamping elements are used for clamping the iron core, each pair of clamping elements is connected via a dual-head bolt, a steel channel is welded at the middle of each clamping element, one end of the steel channel is connected with the side end surface of the clamping element, the other end of the steel channel extends to the outer side of the iron core, and the other ends of each pair of steel channels are also connected through a dual-head bolt.

The invention belongs to an equipment device specially used for preparing livestock feed, and particularly discloses a feed storage bin which comprises a storage box with a discharge hole. The feed storage bin is characterized by further comprising a motor, a rotary shaft, a scraper plate and a baffle plate, wherein the lower part of the storage box is in the shape of a funnel; the rotary shaft is coaxially connected to an output shaft of the motor; the scraper plate is fixed to the rotary shaft, and is in clearance fit with the inner wall of the storage box; the baffle plate is positioned in the storage box, and is fixed to the output shaft; and a discharge opening corresponding to the discharge hole is formed in the baffle plate. When the scraper plate rotates, the feed can be effectively promoted to flow, so that arching phenomena are reduced. Meanwhile, even a few arching phenomena exist, the arches can be scraped off when the scraper plate rotates, and the feed is uniformly re-mixed under the driving of the rotary shaft.

The invention relates to a floor board tightly attached mounting method. The floor board tightly attached mounting method comprises the steps that a component is provided at the lap joint of a floor board and a platform steel beam and comprises a cross rod located above the floor board and vertical rods distributed and fixed along the cross rod; the bottom end of the vertical rod located at one end of the cross rod is perpendicularly fixed to the top face of the platform steel beam, and the other vertical rods are perpendicularly jacked at a concave position of the top face of the floor board in sequence; then all welded studs are sequentially fixed; and finally, the component is dismantled. By adoption of the floor board tightly attached mounting method, the position of the component does not need to be adjusted, aloft operation is facilitated, efficiency is high, and recyclability is achieved.

The invention provides a mixer of a feeding unit. The mixer comprises a feed bin and a charge inlet. The feed bin is provided with a bent segment which is provided with a plurality of air holes. The charge hole is arranged above the bent segment. A rotary shaft is further disposed below the bent segment. A rotary leaf plate is disposed on the rotary shaft. The rotary shaft is connected with the feed bin through a shaft. The rotary leaf plate is fixedly connected with the rotary shaft. A motor output shaft joint is disposed at one end of the rotary shaft. A chute is arranged below the rotary leaf plate, and a feed trough pipeline is connected below the chute. The chute is fixedly connected with the feed bin and inclines at 65 DEG. The feed bin is integrated with the air holes during manufacturing. The mixer is simple in structure and convenient to use, utilization rate of the feeding unit can be increased, and feeding is smoothed.

The present invention provides A color cathode ray tube comprising: a panel having a flat outer surface and an inner surface that has a predetermined curvature; and a shadow mask, wherein B2/P2<=B3/P3 where B1 is a length of a bridge as a distance between holes in a vertical direction at a center portion of the shadow mask; B2 is a length of a bridge as a distance between holes in a vertical direction at four corner portions of the shadow mask; B3 is a length of a bridge as a distance between holes at edge portions of the shadow mask in a direction of a long axis thereof; P1 is a vertical pitch of the holes at the center portion of the shadow mask; P2 is a vertical pitch of the holes at the four corner portions of the shadow mask; and P3 is a vertical pitch of the holes at the edge portions of the shadow mask in a direction of a long axis thereof.