The invention discloses a pin shaft dismounting method and belongs to the technical field of mechanical equipment maintenance The method comprises the following steps of: Step 1, dismounting a component for fixing the pin shaft, Step 2, forming a through hole in the center of the pin shaft along an axis by using a hot working method, Step 3, cooling the pin shaft, and Step 4, dismounting the pin shaft from a pin hole by using a mechanical and hydraulic pin puller or a heavy body impact method The method only damages the pin shaft, does not cause scrap of a connecting piece or influence the precision of the pin hole, and enables the pin hole to meet secondary assembly requirements in an implementation process In addition, the method is applicable to the dismounting of the pin shaft in many environments and many forms The method is simple to operate and low in labor intensity and dismounting expense, dismounts the pin shaft conveniently, reduces labor cost and improves production efficiency

Pin shaft dismounting method

The invention discloses a tool and a method for dismantling an elastic spherical hinge from a motor suspension. The tool is characterized by comprising a top plate vertically arranged, a pressing plate, two pull rods and a pressing cylinder, wherein the pressing plate is arranged on the right side of the top plate and is aligned at the top plate; the pull rods are connected with the top plate and the pressing plate and are horizontally arranged; the pressing cylinder is horizontally arranged; the two pull rods aligned up and down are mounted between the top plate and the pressing plate; the motor suspension stretches into the space between the two pull rods and is leaned against the left side of the pressing plate; an axial penetrating hole is formed in the pressing plate; the pressing cylinder is propped against the left side of the elastic spherical hinge in the motor suspension; the pressing cylinder, the elastic spherical hinge and the axial penetrating hole are coaxially aligned; and rightward axial pressure is acted on the pressing cylinder to push the pressing cylinder to press the elastic spherical hinge out of the motor suspension and enter into the axial penetrating hole. The tool can dismantle the elastic spherical hinge from the motor suspension in a reliable, safe, efficient and scatheless manner, lowers the labor intensity of motor repairing and improves the repairing efficiency.

Tool and method for dismantling elastic spherical hinge from motor suspension

The invention relates to the field of automotive wheel cover detection, and discloses a rapid automatic wheel cover assembly detecting tool which comprises a reference board and a detecting component,wherein the detecting component is arranged on the reference board and used for detecting the height of a positioning metal plate. The detecting component comprises a detection base and a lever, thedetection base is arranged on the reference board, the lever is rotatably arranged on the detection base, the abutting joint rod abutted to the bottom end of the positioning metal plate is arranged atone end of the lever, a comparison rod is arranged at the other end of the lever, and a distance measurement component is arranged on the reference board and used for measuring vertical moving distance of the comparison rod. When an automotive wheel cover is fixed, the lower end of the positioning metal plate pushes the upper end of the abutting joint rod, so that the level rotates, and the comparison rod rises. The distance measurement component is arranged on the reference board to measure the vertical moving distance of the comparison rod and rapidly measure the offset distance of the abutting joint rod pushed by the positioning metal plate, and the size of the positioning metal plate is rapidly detected.

Rapid automotive wheel cover assembly detecting tool

The invention discloses a traction pin component disassembling device, belongs to the technical field of railway transportation equipment, and solves the problems of great labor consumption, longer disassembling time and low disassembling efficiency of the manual disassembly of a traction pin component in the prior art. The traction pin component disassembling device comprises a spring base, wherein a barrel supporting plate is arranged above the spring base; the spring base and the barrel supporting plate are connected through a plurality of spring guide columns; the plurality of spring guidecolumns are uniformly distributed between the spring base and the barrel supporting plate; a traction pin fixing device is arranged between the spring base and the barrel supporting plate; a cylindrical barrel vertically penetrating through the barrel supporting plate is fixed in the center of the barrel supporting plate; a vehicle body support is arranged above the barrel supporting plate; and apressure conveying device is arranged between the barrel supporting plate and the vehicle body support.

Traction pin component disassembling device

The invention relates to a temporary pre-stressing force supporting mechanism for a shield tunnel, and a construction method. The temporary pre-stressing force supporting mechanism comprises a first annular steel ring and a second arc-shaped steel ring, wherein the first annular steel ring and the second arc-shaped steel ring are matched with the inner side surface of a duct piece ring in a tunnelto be supported; the outer side surface of the first annular steel ring and the outer side surface of the second annular steel ring can be independently fit to the inner side surface of the upper half part of the duct piece ring and the inner side surface of the lower half part of the duct piece ring; a pre-stressing force regulation element and a locking element can be arranged between two end parts of the first annular steel ring and the second annular steel ring; the pre-stressing force regulation element can push and support the first annular steel ring and the second annular steel ring to regulate the supporting force of the first annular steel ring and the second annular steel ring for the duct piece; and the locking element is used for locking and fixing the first annular steel ring and the second annular steel ring. By use of the supporting mechanism disclosed by the invention, various adverse effects of a shield tunnel which is constructed later for a shield tunnel which is constructed previously can be effectively avoided, and in addition, the supporting mechanism performs a certain correction function for duct piece dislocation.

Temporary pre-stressing force supporting mechanism for shield tunnel, and construction method

The invention provides a demounting tool and method for a bogie traction pin sleeve. The demounting tool for the bogie traction pin sleeve comprises an upper pressing plate, a lower pressing plate, two studs and a jack. Through holes are formed in the two ends of the upper pressing plate, and through holes are formed in the two ends of the lower pressing plate. One ends of the studs are inserted in the through holes in the upper pressing plate, and the other ends of the studs are inserted in the through holes in the lower pressing plate. The two ends of each stud are further in threaded connection with adjusting nuts. The jack is detachably installed on the lower pressing plate. A positioning hole is formed in the middle portion of the upper pressing plate. By means of the demounting tool for the bogie traction pin sleeve, the demounting efficiency is improved and the successful rate is increased.

Demounting tool and method for bogie traction pin sleeve

The invention provides a lever ratio measurement device and a lever ratio measurement method. The device comprises a telescoping rod assembly, a guide rod, and a sliding sleeve. The telescoping rod assembly comprises two end rod bodies and one central rod body, wherein the central rod body is located between the two end rod bodies. Two end parts of the central rod body are respectively in sliding connection with the corresponding end rod body. A side part of each end rod body is provided with a first positioning pin, and the guide rod is fixed on the central rod body. The guide rod is provided with scale. The sliding sleeve sleeves the guide rod, and can rotate and slide on the slide rod. A side wall of the sliding sleeve is provided with a jack, and the interior of the jack is slidingly provided with a support. The support is provided with a pin hole, and the interior of the pin hole is slidingly provided with a second positioning pin. The center of one end face of the first positioning pin and the center of one end face of the second positioning pin are respectively provided with a measurement mark. The device brings convenience to an operator for measurement, reduces the measurement difficulty, and improves the measurement precision.

Lever ratio measurement device and lever ratio measurement method

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Demounting tool and method for bogie traction pin sleeve

Lever ratio measurement device and lever ratio measurement method