CN201415501Y

CN201415501Y - Structural device of rolling bearing of crank shaft connecting rod of pressing machine

Info

Publication number: CN201415501Y
Application number: CN2009201188686U
Authority: CN
Inventors: 黄开训; 郭呈学
Original assignee: Shengzhou Jiangnan Forging And Pressing Machinery Co Ltd
Current assignee: Shengzhou Jiangnan Forging And Pressing Machinery Co Ltd
Priority date: 2009-04-30
Filing date: 2009-04-30
Publication date: 2010-03-03
Anticipated expiration: 2019-04-30

Abstract

The utility model relates to a structural device of a rolling bearing of a crank shaft connecting rod of a pressing machine, which adopts the technical points as follows: a bearing chock is arranged on a crank shaft, the inner circles of two tapered roller bearings are arranged on the crank shaft, bearing excircles are mounted on inner holes of the bearing chock, bearing caps are fixed on the bearing chock, the crank shaft, the bearings and the bearing chock are arranged on a machine body together, four lines of cylindrical roller bearings are arranged on an eccentric gear of the crank shaft,a connecting rod is mounted on the cylindrical roller bearings, and a fly wheel is mounted on the crank shaft. The structural device adopts the core technology that the structural device of a slidingbearing is replaced by the rolling bearings. The utility model has the advantages that the gaps of the rolling bearings are small, and the kinematic accuracy is high; the travel frequency of the slideblock is improved from the original 40 time/min to 100 time/min; and the abrasion of the rolling bearing is small, and the service life is long.

Description

The constructional device of press crankshaft connecting rod rolling bearing

One, technical field

Press crankshaft block bearing and connecting rod bearing shell replace sliding bearing with rolling bearing.

Two, background technology

Press crankshaft bearing and connecting rod bearing shell all adopt the tin bronze manufacturing all the time, and its structural shape is a sliding bearing, and sliding bearing exists disadvantage and is: rated speed is low, and the gap is big, and kinematic accuracy is poor.Sliding bearing exists wearing and tearing greatly simultaneously, kills defectives such as manufacturing process complexity, cost height easily.So need seek a kind of crankshaft rod structure device of new model.

Three, summary of the invention

At the problem that rotating speed is low, the gap is big, positioning accuracy is low that above-mentioned sliding bearing structure exists, the utility model provides a kind of press crankshaft bar linkage structure device that replaces sliding bearing with rolling bearing.

In order to achieve the above object, this practical technique scheme is: the crankshaft rod structure device comprises: bearing cap, taper roll bearing, bearing block, gland, connecting rod, four-line column roller bearing, bent axle, fuselage, parts such as flywheel, its major technique feature is: bearing block is arranged on the bent axle, the inner ring of two taper roll bearings is contained on the bent axle, bearing outer ring is contained in the inner hole of bearing seat, and bearing cap is fixed on the bearing block, then bent axle, bearing, and bearing block is arranged on the fuselage together, the effect of bearing block is for bent axle is packed in the fuselage, and is convenient to assembling and maintenance; Four-line column roller bearing is arranged on the crankshaft eccentric shelves, connecting rod is installed on the four-line column roller bearing, connecting rod two sides that are contained in gland play rigid bearing and reach the oil sealing effect on connecting rods, and flywheel is installed on the bent axle, and core of the present utility model is the constructional device that replaces sliding bearing with rolling bearing.Advantage of the present utility model: one, the number of strokes of slide block per minute can significantly improve (be about 40 times/minute as common 80 tons of press ram numbers of strokes, can bring up to 180 times/minute behind the use rolling bearing).Two, the rolling bearing gap is little, kinematic accuracy is high, and the positioning accuracy of slide block greatly improves.Three, rolling bearing long service life, wearing and tearing are little, in the service life of therefore having improved forcing press, have reduced the maintenance and the accessory of forcing press and have changed.

Four, description of drawings

Fig. 1 is the topology view of the utility model technology

Among the figure: 1, bearing cap; 2, taper roll bearing; 3, bearing block; 4, gland; 5, connecting rod; 6, four-line column roller bearing; 7, bent axle; 8, fuselage; 9, flywheel; 10, slide block.

Illustrate: adorn two taper roll bearings and a bearing cap in the bearing block, every forcing press uses two bearing blocks, for being symmetrical set.

Five, the specific embodiment

Below in conjunction with Fig. 1 the utility model specific embodiment is described further: at first bearing block 3 is installed on the bent axle 7, two taper roll bearings 2 are packed in the bearing block 3, bearing cap 1 is fixed on the bearing block 3, simultaneously four row roller bearings 6 are installed on the bent axle 7, then bent axle 7 is packed in the fuselage 8 together with the part on the bent axle, in the bent axle of packing into, connecting rod 5 and gland 4 are encased on the four row roller bearings 6 together, use again with quadrat method the bearing block of opposite side, bearing, bearing cap is encased in the fuselage, the bearing block of two sides is fixed on the fuselage 8, and the degree of tightness of adjusting bearing 2 by bearing cap 1 makes the kinematic accuracy of bent axle reach designing requirement at last.

Adopt the forcing press of the utility model technology trial-production, when trial run, when the ram travel number of times reaches common similar type, the nominal pressure of lathe can reach designing requirement fully, when ram travel number of times during than common similar type Senior Two to three times, the nominal pressure of lathe also can reach designing requirement fully, and the positioning accuracy of slide block than common similar type Senior Two doubly more than.

Claims

1, the constructional device of press crankshaft connecting rod rolling bearing, comprise bearing cap (1), taper roll bearing (2), bearing block (3), gland (4), connecting rod (5), four-line column roller bearing (6), bent axle (7), fuselage (8), flywheel (9), slide block (10), its technical characterictic is that bearing block (1) is arranged on the bent axle (7), the inner ring of two taper roll bearings (6) is located on the bent axle (7), bearing top circle is contained in bearing block (3) endoporus, bearing cap (1) is fixed on the bearing block (3), bent axle (7), bearing and bearing block (3) are arranged on the fuselage together, four-line column roller bearing (6) is arranged on the eccentric shelves of bent axle (7), connecting rod (5) is contained on the four-line column roller bearing (6), and flywheel (9) is installed on the bent axle (7).