61results about How to "No imbalance" patented technology

The invention discloses a novel jig saw which comprises a head and a motor arranged in the head. A first driving wheel in linkage with a motor shaft extension end of the motor is eccentrically hinged with one end of a first connecting rod; and the other end of the first connecting rod is hinged with a first reciprocating rod on which a first saw blade is fixed. The novel jig saw is characterized by further comprising a second driving wheel in linkage with the motor shaft extension end; the second driving wheel is eccentrically hinged with one end of a second connecting rod; and the other end of the second connecting rod is hinged with a second reciprocating rod on which a second saw blade is fixed. The novel jig saw is also provided with a linear limiting mechanism which keeps a certain gap between the first reciprocating rod and the second reciprocating rod and can move linearly; the first saw blade and the second saw blade are respectively clamped on the inner side surfaces close to each other at the lower parts of the first reciprocating rod and the second reciprocating rod; and the linear reciprocating motion of the first saw blade is opposite to the linear reciprocating motion of the second saw blade. As the parts are symmetrically designed, the jig saw operates stably, is easy to operate and has relatively high working efficiency.

The invention relates to a hollow rotor shaft for the rotor of an electrical machine, having a cylindrical jacket, which terminates at both ends with end flanges, wherein a main journal is formed at each of the end flanges, wherein an access bore is provided at least in one of the main journals, said access bore forming access to the shaft cavity that is surrounded by a cylindrical jacket, wherein a conducting element is provided, which fits into the access bore such that the conducting element seals off from the shaft cavity and which leads through the surrounding shaft cavity to the other main journal, into which the conducting element likewise fits such that the conducting element seals off from the shaft cavity, wherein the conducting element allows a liquid or gaseous medium to be conducted through.

The invention discloses a three-plate aluminum alloy forged hub, which comprises a rim front plate, a spoke middle plate and a rim rear plate, wherein the rim front plate, the spoke middle plate and the rim rear plate are in clearance fit and assembled and connected through fastening bolts; the spoke middle plate is provided with a protruding rib for preventing the rim front plate and the rim rear plate from radially shifting; and the protruding rib shields and blocks a gap of a joint of the spoke middle plate, the rim front plate and the rim rear plate in the hub. The rim front plate and therim rear plate are forged by combination of an extrusion process and a spinning process; the assembly is close fit assembly; the concentric precision of the hub is within 0.2mm; complicated dynamic balance adjustment is not needed; the joint of the three plates is totally sealed so as to difficultly leak air; and the three-plate aluminum alloy forged hub has the characteristics of light weight, high concentric degree, simple assembly, attractive appearance, novelty and the like, and is particularly suitable for medium-to-high grade automobiles.

The invention discloses a high-pressure sprayer, which comprises an outer barrel body, two inner liners, a charging pump, a liquid outlet pipe, a liquid inlet pipe, a spray head, a pressure gauge and a pressure reducing valve, wherein the two inner liners and the charging pump are arranged in the outer barrel body; the liquid inlet pipe is communicated with the bottoms of the two inner liners; a four-way joint is also arranged in the outer barrel body; the four-way joint is communicated with the charging pump, the liquid inlet pipe, the liquid outlet pipe, the pressure gauge and the pressure reducing valve by pipes respectively; the communicated part of the four-way joint and the bottom of the charging pump is provided with a one-way valve; and the communicated part of the liquid inlet pipe and one of the inner liners is provided with a sealed self-locking device which can synchronously control liquid inlet or liquid outlet of the two inner liners. The high-pressure sprayer has simplestructure and convenient operation, ensures the balance of liquor amount during charging the two inner liners, prevents the phenomenon of producing un-equality, and also ensures the balance of gas pressure in the two inner liners; therefore, during spraying, the liquors in the two inner liners can be basically sprayed up at the same time but do not produce imbalance, and can effectively seal and self-lock the reserved gas inside the inner liners when the liquor in the inner liners is used up.

An outdoor large-cherry soil test fertilizer application method comprises a step of soil nutrient detection, a step of fertilizer preparation amount calculation, and a step of fertilizer application, so the method reaches scientific and reasonable fertilizer application, and realizes the adjustment of measures according to local conditions, thereby the method has the advantages of no soil nutrient loss, imbalance, surface source pollution or soil acidification, proper fertilizer application, fruit quality improvement, no pollution, and no physiological diseases, and is especially suitable for the large-cherry fertilizer application.