CN211648761U

CN211648761U - Crankshaft structure of diesel engine

Info

Publication number: CN211648761U
Application number: CN201921742528.0U
Authority: CN
Inventors: 戴方荣; 戴琪峰; 陈圣明
Original assignee: Yancheng Shengzhongxin Machinery Co ltd
Current assignee: Yancheng Shengzhongxin Machinery Co ltd
Priority date: 2019-10-17
Filing date: 2019-10-17
Publication date: 2020-10-09
Anticipated expiration: 2029-10-17

Abstract

The utility model discloses a diesel engine crankshaft structure, including bent axle, bearing and flywheel, install the bearing on the bent axle, the flywheel is installed to the end of bent axle, and has the clearance between flywheel and the bearing, install the annular adjustment recess on the bent axle, the one end integrated into one piece that is close to the bearing on the flywheel has the connection pad, and the connection pad begins to have the round hole that corresponds the bent axle, it has a plurality of installation cavities to begin on the connection pad, and installation cavity circumference equiangular distribution on the inner wall of connection pad, adjustment mechanism is installed in the installation cavity. The utility model discloses a square sliding plate cooperation slip cap, spring are located the slip cap, can avoid the problem that the spring warp the bite, the skew takes place for spring motion, simultaneously through connecting rod cooperation ball for it is more nimble to the cooperation of annular adjustment recess, avoid the spring coupling end cover to cause the increase of bent axle rotational friction power.

Description

Crankshaft structure of diesel engine

Technical Field

The utility model relates to a diesel engine bent axle technical field especially relates to a diesel engine crankshaft structure.

Background

The crankshaft is one of important components of the diesel engine, and is subjected to the combined action of centrifugal force of rotating mass, gas inertia force with periodic change and reciprocating inertia force, so that an axial gap exists when the crankshaft is used; and traditional axial clearance adjusts mainly through the adjustable ring and adjusts, and the adjustable ring receives the radial power of bent axle to take place the compression or bounce-off, reaches the purpose of adjusting axial clearance, but the end cover that the spring is connected causes bent axle frictional force increase easily, and causes the problem that the spring warp the bite easily for regulating power weak or inefficacy.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problems existing in the prior art and providing a diesel engine crankshaft structure.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a crankshaft structure of a diesel engine comprises a crankshaft, a bearing and a flywheel, wherein the bearing is arranged on the crankshaft, the flywheel is arranged at the tail end of the crankshaft, a gap is arranged between the flywheel and the bearing, the crankshaft is provided with an annular adjusting groove, one end of the flywheel close to the bearing is integrally formed with a connecting disc, the connecting disc is provided with a round hole corresponding to the crankshaft, a plurality of mounting cavities are arranged on the connecting disc, the circumference of each mounting cavity is distributed on the inner wall of the connecting disc in an equiangular mode, an adjusting mechanism is arranged in the mounting cavity and comprises a mounting sliding sleeve, a sliding plate, a connecting rod, a ball and a spring, a sliding sleeve is arranged in the mounting cavity, a sliding plate is connected in the sliding sleeve in a sliding manner, a spring and a connecting rod are welded at two ends of the sliding plate respectively, and the connecting rod penetrates out of the sliding sleeve and is rotatably connected with a ball, and one end of the spring, which is far away from the sliding plate, is welded on the inner wall of the sliding sleeve.

Preferably, the sliding sleeve and the sliding plate are both of square design.

Preferably, the ball comprises two hemispheroids, the connecting rod is rotatably connected to the middle parts of the two hemispheroids, and the ball is attached to the annular adjusting groove.

Preferably, the inner wall of the connecting disc is not in contact with the crankshaft.

Compared with the prior art, the utility model has the following benefits:

1. the utility model has the advantages that the square sliding plate is matched with the sliding sleeve, the spring is positioned in the sliding sleeve, the problems of spring deformation and jamming and deflection of spring movement can be avoided, so that the problem of adjustment failure is avoided, meanwhile, the matching of the annular adjusting groove is more flexible by matching the connecting rod with the ball, and the increase of the rotating friction force of the crankshaft caused by the spring connecting end cover is avoided;

2. through the cooperation of the square sliding sleeve and the sliding plate, the connecting rod can be prevented from rotating, so that the rotating direction of the ball is fixed, meanwhile, the connecting rod can only do linear motion, the problem that the ball is offset due to the cooperation with the annular adjusting groove can be avoided, and the accurate cooperation of the ball and the annular adjusting groove is ensured.

Drawings

Fig. 1 is a structural diagram of a crankshaft structure of a diesel engine provided by the present invention;

fig. 2 is an enlarged view of a portion a of a crankshaft structure of a diesel engine according to the present invention;

fig. 3 is a connection diagram of the sliding plate of the crankshaft structure of the diesel engine according to the present invention.

In the figure: 1 crankshaft, 2 bearings, 3 flywheels, 4 connecting discs, 5 annular adjusting grooves, 6 balls, 7 mounting cavities, 8 connecting rods, 9 sliding plates, 10 springs and 11 sliding sleeves.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Referring to fig. 1-3, a crankshaft structure of a diesel engine, including a crankshaft 1, a bearing 2 and a flywheel 3, the bearing 2 is installed on the crankshaft 1, the flywheel 3 is installed at the tail end of the crankshaft 1, a gap exists between the flywheel 3 and the bearing 2, an annular adjusting groove 5 is installed on the crankshaft 1, a connecting disc 4 is integrally formed at one end of the flywheel 3 close to the bearing 2, a round hole corresponding to the crankshaft 1 begins to be formed in the connecting disc 4, a plurality of installation cavities 7 begin to be formed in the connecting disc 4, the installation cavities 7 are circumferentially distributed on the inner wall of the connecting disc 4 in an equiangular manner, an adjusting mechanism is installed in the installation cavities 7, the number of the installation cavities 7 can be 4 or 6, and the adjusting mechanism is used for limiting the stroke of the crankshaft 1, reducing the radial movement amplitude of the crankshaft 1, and further reducing. Adjustment mechanism is including installing sliding sleeve 11, sliding plate 9, connecting rod 8, ball 6 and spring 10, install sliding sleeve 11 in the installation cavity 7, sliding connection has sliding plate 9 in sliding sleeve 11, spring 10 and connecting rod 8 have been welded respectively at sliding plate 9's both ends, and connecting rod 8 wears out sliding sleeve 11 and swivelling joint has ball 6, spring 10 keeps away from the one end welding of sliding plate 9 on sliding sleeve 11 inner wall, the laminating of ball 6 is in annular adjustment recess 5, when bent axle 1 takes place the runout, can cushion, reduce the drunkenness amplitude, thereby reduce the production of axial clearance.

More specifically, the sliding sleeve 11 and the sliding plate 9 are both square in design, so that the problem that the sliding plate 9 rotates to cause the deformation of the spring 10 can be avoided, and the position of the ball 6 is stable. The ball 6 comprises two hemispheroids, and connecting rod 8 rotates the middle part of connecting at two hemispheroids, and ball 6 and annular adjustment groove 5 laminate mutually, and ball 6 can take place to rotate on bent axle 1, reduces and connects frictional force. The inner wall of the connecting disc 4 is not contacted with the crankshaft 1, so that the friction with the crankshaft 1 is avoided.

Theory of operation, through square sliding plate 9 cooperation slip cap 11, spring 10 is located slip cap 11, can avoid the problem of spring 10 deformation bite, simultaneously through connecting rod 8 cooperation ball 6, make the cooperation to annular adjusting groove 5 more nimble, avoid spring 10 to connect the end cover and cause the increase of 1 rotation frictional force of bent axle, connect ball 6 through a plurality of connecting rods 8, ball 6 cooperates in annular adjusting groove 5, when bent axle 1 takes place the axial float, can drive connecting rod 8 and take place to remove, thereby play and restrict the stroke of bent axle 1, reduce the radial motion range of bent axle 1, thereby further reduce the production of axial gap.

Claims

1. The utility model provides a diesel engine crankshaft structure, includes bent axle (1), bearing (2) and flywheel (3), its characterized in that, install bearing (2) on bent axle (1), flywheel (3) are installed to the end of bent axle (1), and have the clearance between flywheel (3) and bearing (2), install annular adjusting groove (5) on bent axle (1), the one end integrated into one piece that is close to bearing (2) on flywheel (3) has connection pad (4), and connection pad (4) begin to have the round hole that corresponds bent axle (1), it has a plurality of installation cavity (7) to begin on connection pad (4), and installation cavity (7) circumference equiangular distribution on the inner wall of connection pad (4), install adjustment mechanism in installation cavity (7), adjustment mechanism is including installation sliding sleeve (11), sliding plate (9), connecting rod (8), Ball (6) and spring (10), install slip cap (11) in installation cavity (7), sliding connection has sliding plate (9) in slip cap (11), spring (10) and connecting rod (8) have been welded respectively at the both ends of sliding plate (9), and connecting rod (8) wear out slip cap (11) and have ball (6) of rotating connection, the one end welding of sliding plate (9) is kept away from in spring (10) is on slip cap (11) inner wall.

2. A diesel engine crankshaft arrangement according to claim 1, characterized in that the sliding sleeve (11) and the sliding plate (9) are of square design.

3. The crankshaft structure of the diesel engine as claimed in claim 2, wherein the ball (6) is composed of two hemispheres, the connecting rod (8) is rotatably connected to the middle parts of the two hemispheres, and the ball (6) is attached to the annular adjusting groove (5).

4. A crankshaft structure for a diesel engine according to claim 3, characterized in that the inner wall of the connecting disc (4) is not in contact with the crankshaft (1).