CN219712021U - Diesel engine crankshaft - Google Patents

Abstract

The utility model relates to the technical field of diesel engines and discloses a diesel engine crankshaft which comprises two flywheel pieces, a flywheel end rod part and an output end rod part, wherein the flywheel end rod part and the output end rod part are welded with the two flywheel pieces, one side of one flywheel piece is welded with a crank sleeve, one side of the other flywheel piece is welded with a crank connecting part, the crank connecting part is movably inserted into the crank sleeve, limiting holes are formed in the top end and the bottom end of the crank sleeve, an internal thread limiting cylinder is movably inserted into one of the limiting holes of the crank connecting part, one end of the internal thread limiting cylinder is movably inserted into the through hole, and an internal hexagonal bolt is movably inserted into the other limiting hole. According to the scheme, the internal thread limiting cylinder is in threaded connection with the internal hexagonal bolt, and then the crank sleeve and the crank connecting part are fixed, so that the purpose of connecting and fixing two flywheel pieces is achieved.

Description

Diesel engine crankshaft

Technical Field

The utility model relates to the technical field of diesel engines, in particular to a diesel engine crankshaft.

Background

The crankshaft is one of the most important parts in the general engine, and has the functions of converting the linear reciprocating motion of a piston into rotary motion, and is mainly formed by combining a flywheel end rod part, a crank, an output end rod and two flywheels, wherein the flywheel end rod part and the output end rod part are welded and installed in the middle of one side of the two flywheels, the two flywheels are fixedly connected through the crank, when the two flywheels are fixedly connected through the crank, two ends of the crank are welded with one side opposite to the two flywheels by utilizing an electric welding gun, but the distance between the two flywheels is small, so that the crank has to be welded with one side of the two flywheels in a narrow space, and the operation difficulty is high.

Disclosure of Invention

In order to solve the problem that the distance between the two flywheels is small, so that the crank throw has to be welded with one side of the two flywheels in a small space, and the operation difficulty is high, the utility model provides a diesel engine crankshaft.

The utility model provides a diesel engine crankshaft which adopts the following technical scheme:

the utility model provides a diesel engine bent axle, includes two flywheel pieces, a flywheel end pole portion and an output pole portion, flywheel end pole portion and output pole portion are welded with two flywheel pieces, one of them the one side welding of flywheel piece has the crank sleeve, another one the one side welding of flywheel piece has crank connecting portion, crank connecting portion activity grafting is in the inside of crank sleeve, spacing hole has all been seted up on crank sleeve's top and bottom, the through-hole has been seted up to crank connecting portion, two spacing hole passes through the through-hole intercommunication, one of them the inside activity of spacing hole runs through there is internal thread spacing section of thick bamboo, the activity of internal thread spacing section of thick bamboo one end is pegged graft in the inside of through-hole, another one the inside activity of spacing hole is run through there is hexagon socket head cap screw, hexagon socket head cap screw and internal thread spacing section of thick bamboo threaded connection.

Preferably, a magnet block is fixedly embedded in the inner top wall of the internal thread limiting cylinder, and the magnet block is magnetically connected with one end of the internal hexagonal bolt.

Preferably, the middle part welding of one of them flywheel piece one side has two gag levers, two the gag lever levers all are located the inside of crank sleeve, two jacks have been seted up to one side of crank connecting portion, two the gag lever levers are movable grafting respectively in the inside of two jacks.

Preferably, the crank sleeve consists of an inner iron sleeve and an outer stainless steel sleeve, wherein the inner iron sleeve is welded on one side of one flywheel piece, and the outer stainless steel sleeve is fixedly sleeved on the outer surface of the inner iron sleeve.

In summary, the utility model has the following beneficial technical effects: through being equipped with spacing section of thick bamboo of internal thread and hexagon socket head cap screw, through spacing section of thick bamboo of internal thread and hexagon socket head cap screw threaded connection, and then fix between crank sleeve and the crank connecting portion, compare in prior art, need not weld the both ends of crank and one side of two flywheel pieces in narrow and small space, but direct be that crank sleeve and crank connecting portion and two flywheel pieces in advance, then reuse spacing section of thick bamboo of internal thread and hexagon socket head cap screw threaded connection, and then fix between crank sleeve and the crank connecting portion, reach the purpose of connecting fixedly between two flywheel pieces, thereby reduced the degree of difficulty of fixing between two flywheel pieces and the crank.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the application embodiment.

Fig. 2 is a schematic cross-sectional structure of an embodiment of the application.

Fig. 3 is a schematic diagram of the split structure of the bell crank sleeve and bell crank connection in the application embodiment.

Fig. 4 is a schematic diagram of a split structure of an internal thread limiting cylinder and an internal hexagonal bolt in an application embodiment.

Reference numerals illustrate: 1. flywheel pieces; 2. a flywheel end lever portion; 3. an output end lever portion; 41. a bell crank sleeve; 42. a bell crank connection; 43. an internal thread limiting cylinder; 44. an inner hexagon bolt; 45. a magnet block; 46. a limit rod; 401. an inner iron sleeve; 402. an outer stainless steel sleeve.

Detailed Description

The utility model is described in further detail below with reference to fig. 1-4.

The embodiment of the utility model discloses a diesel engine crankshaft, referring to figures 1, 2 and 4, comprising two flywheel pieces 1, a flywheel end rod part 2 and an output end rod part 3, wherein the flywheel end rod part 2 and the output end rod part 3 are welded with the two flywheel pieces 1, the flywheel end rod part 2 and the output end rod part 3 are used for connecting the outside, the two flywheel pieces 1 can be supported, in addition, the output end rod part 3 can also play the role of outputting diesel engine power, one side of one flywheel piece 1 is welded with a crank sleeve 41, one side of the other flywheel piece 1 is welded with a crank connecting part 42, the crank connecting part 42 is movably inserted into the crank sleeve 41, the crank sleeve 41 and the crank connecting part 42 are matched to enable the two flywheel pieces 1 to be in a parallel state and play the role of movably connecting the two flywheel pieces 1, and simultaneously are matched with the flywheel end rod part 2 and the output end rod part 3 to support the two flywheel pieces 1, limiting holes are formed in the top end and the bottom end of the crank sleeve 41, through holes are formed in the crank connecting portion 42, the two limiting holes are communicated through the through holes, an internal thread limiting cylinder 43 is movably penetrated into the inside of one limiting hole, one end of the internal thread limiting cylinder 43 is movably inserted into the inside of the through hole, an internal hexagonal bolt 44 is movably penetrated into the inside of the other limiting hole, the internal hexagonal bolt 44 is in threaded connection with the internal thread limiting cylinder 43, so that the crank sleeve 41 and the crank connecting portion 42 can be fixed, one end of an external piston is movably connected with the crank sleeve 41, a cyclic reciprocating motion is applied to the crank sleeve 41, the crank sleeve 41 and the crank connecting portion 42 are matched to transmit the motion to the two flywheel pieces 1, the cyclic reciprocating motion of an external piston can be converted into rotary motion of a crankshaft by the two flywheel pieces 1, and the engine outputs power outwards, and can store kinetic energy to overcome other strokes of the engine which do no work.

Referring to fig. 2, a magnet block 45 is fixedly embedded in the inner top wall of the inner thread limiting cylinder 43, and the magnet block 45 is magnetically connected with one end of the inner hexagon bolt 44, so that the inner hexagon bolt 44 can be more stable in the inner thread limiting cylinder 43 in the process of applying a magnetic attraction force to the inner hexagon bolt 44 in real time, the difficulty of free rotation of the inner hexagon bolt 44 in the inner thread limiting cylinder 43 is increased, and the inner hexagon bolt 44 and the inner thread limiting cylinder 43 are more stable to connect.

Referring to fig. 2 and 3, two limit rods 46 are welded at the middle part of one side of one flywheel piece 1, two limit rods 46 are all located inside the crank sleeve 41, two jacks are formed at one side of the crank connecting portion 42, the two limit rods 46 are movably inserted into the interiors of the two jacks respectively, in the rotating process of the crank sleeve 41 and the crank connecting portion 42, large traction force can be received, the crank sleeve 41 is welded at one side of one flywheel piece 1, the crank connecting portion 42 is welded at one side of the other flywheel piece 1, movable connection is formed between the crank connecting portion 42 and the crank sleeve 41, at the moment, the two limit rods 46 are inserted into the interiors of the two jacks, two limit holes and one through hole are in the same straight line, and are in the communicating state, and simultaneously torsion applied by the crank sleeve 41 and the crank connecting portion 42, which are received by the internal thread limit cylinder 43 and the internal hexagonal bolt 44, can be shared, so that torsion cannot occur to the internal thread limit cylinder 43 and the internal hexagonal bolt 44.

Referring to fig. 3, the bell crank sleeve 41 is composed of an inner iron sleeve 401 and an outer stainless steel sleeve 402, the inner iron sleeve 401 is welded on one side of one flywheel piece 1, the outer stainless steel sleeve 402 is fixedly sleeved on the outer surface of the inner iron sleeve 401, the inner iron sleeve 401 can be used for supporting the outer stainless steel sleeve 402, the outer stainless steel sleeve 402 is smooth in surface, and when one end of a piston arranged outside is sleeved on the outer stainless steel sleeve 402 and drives the outer stainless steel sleeve 402 to do cyclic reciprocating motion, the friction force between the outer stainless steel sleeve 402 and the piston contact surface is small.

The implementation principle of the diesel engine crankshaft provided by the embodiment of the utility model is as follows: during the use, peg graft the crank connecting portion 42 in the inside of crank sleeve 41 to stir simultaneously one of them flywheel piece 1 and drive crank connecting portion 42 rotation, make two gag lever posts 46 peg graft in the inside of two jacks, then can make the through-hole on crank connecting portion 42 and the spacing hole that crank sleeve 41 top and bottom were seted up communicate, then run through the spacing hole that crank sleeve 41 top was seted up with internal thread spacing section 43 and peg graft in the inside of through-hole, and run through the spacing hole that crank sleeve 41 bottom was seted up with internal thread spacing section 43 threaded connection with hexagon socket head cap screw 44, and then carry out fixed connection between crank sleeve 41 and the crank connecting portion 42, thereby connect between two flywheel pieces 1, afterwards install flywheel end pole portion 2 and output end pole portion 3 in the inside of diesel engine, and apply a cyclic reciprocating motion to crank sleeve 41 afterwards, crank sleeve 41 and crank connecting portion 42 cooperate and transmit this motion to two flywheel pieces 1, two flywheel pieces can be converted into the cyclic motion of piston 1 and the other kinetic energy of rotation of crankshaft can be overcome, and the other reciprocating motion of engine can be overcome.

The last points to be described are: first, in the description of the present utility model, it should be noted that, unless otherwise specified and defined, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be mechanical or electrical, or may be a direct connection between two elements, and "upper," "lower," "left," "right," etc. are merely used to indicate relative positional relationships, which may be changed when the absolute position of the object being described is changed;

secondly: in the drawings of the disclosed embodiments, only the structures related to the embodiments of the present disclosure are referred to, and other structures can refer to the common design, so that the same embodiment and different embodiments of the present disclosure can be combined with each other under the condition of no conflict;

finally: the foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the utility model are intended to be included within the scope of the utility model.

The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims (4)

1. The utility model provides a diesel engine bent axle, includes two flywheel pieces (1), a flywheel end pole portion (2) and an output pole portion (3), its characterized in that, flywheel end pole portion (2) and output pole portion (3) and two flywheel pieces (1) welding, one of them flywheel piece (1) one side welding has crank sleeve (41), another one side welding of flywheel piece (1) has crank connecting portion (42), crank connecting portion (42) activity grafting is in the inside of crank sleeve (41), spacing hole has all been seted up to the top and the bottom of crank sleeve (41), the through-hole has been seted up to crank connecting portion (42), two spacing hole passes through the through-hole intercommunication, one of them the inside activity of spacing hole has run through internal thread spacing section of thick bamboo (43), the inside of internal thread spacing section of thick bamboo (43) one end activity grafting in the through-hole, another one the inside activity of spacing hole has run through internal hexagonal bolt (44), internal hexagonal bolt (44) and internal thread spacing section of thick bamboo (43) threaded connection.

2. A diesel engine crankshaft as in claim 1 wherein: the inner top wall of the internal thread limiting cylinder (43) is fixedly embedded with a magnet block (45), and the magnet block (45) is magnetically connected with one end of an internal hexagonal bolt (44).

3. A diesel engine crankshaft as in claim 1 wherein: two limiting rods (46) are welded in the middle of one side of the flywheel piece (1), the two limiting rods (46) are located in the crank sleeve (41), two insertion holes are formed in one side of the crank connecting portion (42), and the two limiting rods (46) are movably inserted into the two insertion holes respectively.

4. A diesel engine crankshaft as in claim 1 wherein: the crank sleeve (41) consists of an inner iron sleeve (401) and an outer stainless steel sleeve (402), wherein the inner iron sleeve (401) is welded on one side of one flywheel piece (1), and the outer stainless steel sleeve (402) is fixedly sleeved on the outer surface of the inner iron sleeve (401).