37results about How to "Increased ascent height" patented technology

A diaphragm includes a central portion and an edge portion surrounding the central portion and smoothly connecting with the central portion. The edge portion has a main curved portion which is convex forward in the vibrating direction and a first side curved portion continued to an inner periphery of the main curved portion and connected with the central portion. The first side curved portion is convex backward in the vibrating direction. The rigidity of the diaphragm can be increased, without sacrificing the acoustic characteristics and reducing the size of the diaphragm.

The invention relates to a guiding sieve plate float valve tower, belonging to a gas-liquid mass-transfer separation plant in chemical process. The guiding sieve plate float valve tower disclosed herein mainly comprises a tower body (1), a tower plate (2), a down-flow plate (7), a seal pan (9), etc., wherein the liquid inlet of the tower plate (2) is provided with a bubbling promoter (6), the plate surface of the tower plate is provided with a floating tongue (3), a guiding pore (4), a sieve pore (5) and a float valve. According to the invention, when the gas velocity is low, the float valve on the tower plate is not open, gas only passes through the guiding pore (4), the sieve pore (5) and the floating tongue (3); when the gas velocity increases to a certain level, the float valve is open, and the opening height of the float valve increases gradually with the increase of the gas velocity. The guiding sieve plate float valve tower disclosed herein has the advantages of simple structure, low cost, and greatly raised operation flexibility and separation efficiency.

The invention discloses a side rail type single-girder overhead crane. The crane comprises a girder extending in the front-back direction, and a trolley movably assembled on the girder in a guide mode. The trolley comprises an operating mechanism. The girder comprises a lower cover plate. At least one of the left side and the right side of the girder is provided with a bearing rail extending in the front-back direction. The operating mechanism comprises a guide limiting mechanism. A limiting structure which is matched with the guide limiting mechanism in a guide mode and prevents the trolley from being disengaged from the girder in the running process is arranged on the girder. The operating mechanism is located above the lower cover plate of the girder. The trolley is arranged on the two sides or one side, in the length direction, of the girder of the crane, the operating mechanism of the trolley is located above the lower cover plate of the girder, compared with the structural form that in the prior art, the trolley is hung below the girder, the rising height of a hoisting hook of the trolley is not limited by the lower cover plate any more, and the hoisting height of the crane can be obviously increased.

The invention relates to a strength-adjustable pile insertion construction device. The strength-adjustable pile insertion construction device effectively solves the problem that in the prior art, a large machine cannot enter the construction site, and therefore manual pile insertion efficiency is low and labor is wasted. The technical scheme of the strength-adjustable pile insertion construction device is characterized by comprising a first flat plate, wherein a third flat plate is arranged above the first flat plate, vertical rods are arranged on the first flat plate, a second flat plate is arranged on the vertical rods, the first flat plate, the second flat plate and the third flat plate all are provided with a through hole, and the axes of the through holes coincide; first push rods arearranged on the second flat plate, a first sleeve is arranged on the first push rods, a second sleeve is arranged in the first sleeve, second push rods are arranged on the side wall of the second sleeve, and a clamping device is arranged between each second push rod and the first sleeve; and a third sleeve is arranged above the first sleeve, a hammer head is arranged in the third sleeve, a through hole is formed in the center of the hammer head, a fixing device is arranged between the hammer head and the third sleeve, and first ropes are arranged on the fixing device. The strength-adjustablepile insertion construction device has the advantages that pile bodies can be clamped and loosened, the whole pile insertion process is labor-saving, the operation is simple, safety is good, and the high pile insertion efficiency can be achieved.

The invention relates to a hoisting height lifting device for a crane. The hoisting height lifting device comprises two vertical frames and a bearing beam, wherein the two vertical frames are in left-right opposite arrangement; the bearing beam is arranged on the two vertical frames; each vertical frame comprises two vertical plates which are in back-and-forth symmetric arrangement, an I-shaped plate connected with the two vertical plates and an I-shaped track arranged on the I-shaped plate; the bearing beam comprises a main beam and two end beams which are respectively and fixedly arranged attwo sides of the bottom end of the main beam; the main beam comprises a top plate, a bottom plate, a front side plate, a rear side plate, a left side plate and a right side plate; horizontal plates are fixedly arranged on the outer surfaces of the front side plate and the rear side plate; first outer side surfaces of the two horizontal plates are respectively flush with two second outer side surfaces of the bottom plate. According to the hoisting height lifting device disclosed by the invention, the distance from a weight to limit lifting height of a lifting hook is increased, the hoisting height of the crane is increased, an indoor using range of the crane is increased, the position of the main beam has no need to be adjusted, and the use is very convenient and quick.