CN115342116A - Combined crankshaft convenient to disassemble and replace - Google Patents

Abstract

The invention discloses a combined crankshaft convenient to disassemble and replace, which comprises a first main journal, a first crank arm, a connecting rod journal, a second crank arm and a second main journal, wherein one end of the first main journal is fixedly connected with the outer side of the first crank arm, the connecting rod journal is arranged between the first crank arm and the second crank arm, one end of the second main journal is fixedly connected with the outer side of the second crank arm, and one end of the first main journal, which is far away from the first crank arm, is provided with a matching groove.

Description

Combined crankshaft convenient to disassemble and replace

Technical Field

The invention belongs to the technical field of mechanical parts, and particularly relates to a combined crankshaft convenient to disassemble and replace.

Background

In the existing life, the crankshaft is the main rotating part of the engine, after the connecting rod is arranged, the crankshaft can bear the up-and-down reciprocating motion of the connecting rod to be changed into the circulating rotating motion, the crankshaft bears the force transmitted by the connecting rod and converts the force into torque to be output through the crankshaft and drive other accessories on the engine to work, the crankshaft is under the combined action of the centrifugal force of rotating mass, the gas inertia force with periodic change and the reciprocating inertia force, and the crankshaft bears the action of bending and twisting load, so that the crankshaft is required to have enough strength and rigidity, and the surface of a journal is required to be wear-resistant, work is uniform and balance is good.

And present bent axle, generally include two main journals, two crank arms and a connecting rod journal, a surface of two crank arms is connected with two main journals are perpendicular respectively, the connecting rod journal sets up between two crank arms, the axis of two main journals is on same straight line, the axis of connecting rod journal parallels with the axis of main journal, and in actual working process, the wearing and tearing take place easily for the connecting rod journal, consequently, often change the bent axle because the wearing and tearing of connecting rod journal, but on the existing market to the simpler bent axle of structure, mostly all adopt integrated into one piece's processing method to realize the processing of part, the bent axle appears wearing and tearing and collides with the back in the use, for the normal work that does not influence equipment, its part is mostly all by whole change, lead to use cost to rise, be unfavorable for practical application.

Disclosure of Invention

The present invention is directed to a combined crankshaft which is easy to disassemble and replace, and solves the above problems.

In order to solve the above problems, the present invention provides a technical solution:

a combined crankshaft convenient for disassembly and replacement comprises a first main journal, a first crank arm, a connecting rod journal, a second crank arm and a second main journal, one end of the first main journal is fixedly connected with the outer side of the first crank arm, the connecting rod journal is arranged between the first crank arm and the second crank arm, one end of the second main journal is fixedly connected with the outer side of the second crank arm, one end of the first main journal far away from the first crank arm is provided with a matching groove, the size of the matching groove is matched with that of the second main journal, an L-shaped groove is formed in the first main journal and positioned on one side of the matching groove, an adjusting groove is formed in the outer side of the first main journal and below the L-shaped groove, an adjusting screw rod is rotatably connected inside the L-shaped groove and above the adjusting groove, the bottom of the adjusting screw rod extends to the inside of the adjusting groove and is fixedly connected with an adjusting knob, the outer side of the adjusting screw rod is in threaded connection with a movable plate, the moving plate is connected with the inner wall of the L-shaped groove in a sliding manner, a moving block is connected with the inner wall of the L-shaped groove and positioned at one side of the moving plate in a sliding manner, one side of the moving block far away from the moving block is fixedly connected with a fixed rod, one end of the fixed rod far away from the moving block is fixedly connected with a limit column, the bottom of the inner wall of the L-shaped groove and below the limiting column are connected with a limiting rod in a sliding way, the bottom of the limiting rod extends into the matching groove, the top of the limiting rod is fixedly connected with a limiting plate, the outer side of the limiting plate is provided with a through groove, the limiting column penetrates through the through groove and is in sliding connection with the through groove, a return spring is sleeved outside the limiting rod and below the limiting plate, and a limiting groove matched with the limiting rod is formed in the outer side of the second main journal.

Preferably, the connecting rod neck is composed of a central rod and a metal sleeve, one end of the central rod is fixedly connected with a first crank arm, one end of the central rod, far away from the first crank arm, is fixedly connected with a second crank arm, the metal sleeve is rotatably connected with the outer side of the central rod, the metal sleeve is made of No. 45 steel, a groove is formed in the outer side of the central rod and located in the metal sleeve, a filling hole is formed in the outer side of the metal sleeve and located in one side of the groove, and a sealing plug is arranged in the filling hole.

Preferably, the axes of the first main journal and the second main journal are on the same straight line, and the axis of the connecting rod journal and the axis of the first main journal are parallel to each other.

Preferably, one side of the moving block, which is close to the adjusting screw, is provided with a sixty-degree inclined surface, one end of the moving plate, which is close to the moving block, is provided with an inclined surface matched with the inclined surface on the outer side of the moving block, and one end of the moving plate, which is close to the moving block, is slidably connected with the inclined surface on the outer side of the moving block.

Preferably, the through groove and the horizontal plane form an included angle of thirty degrees.

Preferably, a key groove is formed in the bottom of the inner wall of the matching groove, and a flat key matched with the key groove is arranged at the bottom of the second main journal.

Preferably, the outer sides of the first crank arm and the second crank arm are both provided with through holes.

Preferably, the top and the bottom of the inner wall of the L-shaped groove and one side of the moving block are both provided with sliding grooves, the top and the bottom of the moving block are both fixedly connected with sliding blocks, and the sliding blocks are both in sliding connection with the corresponding sliding grooves.

Preferably, the bottom of the adjusting knob is provided with an inner hexagonal groove.

The invention has the beneficial effects that: the combined crankshaft body is compact in structure and high in practicability, the first main journal and the second main journal which are matched with each other are arranged at the two ends of each crankshaft body, so that a plurality of crankshaft bodies can be tightly connected to form the combined crankshaft, and in the actual application process, when a connecting rod journal is worn, the crankshaft body to be replaced can be detached and replaced independently without replacing the whole equipment, so that the use cost is greatly reduced, the detaching operation is simple and convenient, and the practical application is facilitated.

Description of the drawings:

for ease of illustration, the invention is described in detail by the following detailed description and the accompanying drawings.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the connection of two crankshaft bodies of the present invention;

FIG. 3 is an enlarged view taken at A in FIG. 1;

FIG. 4 is a schematic view of an adjustment knob according to the present invention;

fig. 5 is a schematic view of a second main journal structure of the present invention.

In the figure: 1. a first main journal; 2. a first crank arm; 3. a connecting rod neck; 301. a center pole; 302. a metal sheath; 303. a groove; 304. filling holes; 305. a sealing plug; 4. a second crank arm; 5. a second main journal; 6. a mating groove; 7. an L-shaped groove; 8. an adjustment groove; 9. adjusting the screw rod; 10. adjusting a knob; 11. moving the plate; 12. a moving block; 13. fixing the rod; 14. a limiting column; 15. a limiting rod; 16. a limiting plate; 17. a through groove; 18. a return spring; 19. a keyway; 20. a flat bond; 21. a through hole; 22. a limiting groove; 23. a chute; 24. a slider; 25. an inner hexagonal groove.

The specific implementation mode is as follows:

as shown in fig. 1 to 5, the following technical solutions are adopted in the present embodiment:

example (b):

a combined crankshaft convenient to disassemble and replace is formed by sequentially connecting a plurality of crankshaft bodies end to end and comprises a first main journal 1, a first crank arm 2, a connecting rod journal 3, a second crank arm 4 and a second main journal 5, wherein the first main journal 1, the first crank arm 2, the connecting rod journal 3, the second crank arm 4 and the second main journal 5 form the crankshaft bodies together; one end of the first main journal 1 is fixedly connected with the outer side of the first crank arm 2, the connecting rod journal 3 is arranged between the first crank arm 2 and the second crank arm 4, one end of the second main journal 5 is fixedly connected with the outer side of the second crank arm 4, one end of the first main journal 1, which is far away from the first crank arm 2, is provided with a matching groove 6, the size of the matching groove 6 is matched with that of the second main journal 5, and the second main journal 5 can be inserted into the matching groove 6 for use; an L-shaped groove 7 is formed in the first main journal 1 and located on one side of the matching groove 6, an adjusting groove 8 is formed in the outer side of the first main journal 1 and located below the L-shaped groove 7, an adjusting screw 9 is rotatably connected to the inner portion of the L-shaped groove 7 and located above the adjusting groove 8, the bottom of the adjusting screw 9 extends into the adjusting groove 8 and is fixedly connected with an adjusting knob 10, a moving plate 11 is connected to the outer side of the adjusting screw 9 through threads, the moving plate 11 is slidably connected with the inner wall of the L-shaped groove 7, the adjusting screw 9 is driven to rotate through the adjusting knob 10, and the moving plate 11 is driven to slide in the L-shaped groove 7 through rotation of the adjusting screw 9; a moving block 12 is connected to the inner wall of the L-shaped groove 7 and located on one side of the moving plate 11 in a sliding manner, a fixed rod 13 is fixedly connected to one side, away from the moving plate 11, of the moving block 12, a limit post 14 is fixedly connected to one end, away from the moving block 12, of the fixed rod 13, a limit post 15 is connected to the bottom of the inner wall of the L-shaped groove 7 and located below the limit post 14 in a sliding manner, the bottom of the limit post 15 extends into the matching groove 6, a limit plate 16 is fixedly connected to the top of the limit rod 15, a through groove 17 is formed in the outer side of the limit plate 16, the limit post 14 penetrates through the through groove 17 and is connected with the through groove 17 in a sliding manner, a return spring 18 is sleeved outside the limit rod 15 and located below the limit plate 16, and the return control of the limit rod 15 is facilitated better through the matching between the limit plate 16 and the return spring 18; spacing groove 22 of mutually supporting with gag lever post 15 is seted up in the outside of second main journal 5, through the cooperation between spacing groove 22 and the gag lever post 15, be convenient for better be connected second main journal 5 and first main journal 1 to better completion is connected between a plurality of bent axles body.

The connecting rod neck 3 is composed of a central rod 301 and a metal sleeve 302, one end of the central rod 301 is fixedly connected with a first crank arm 2, one end of the central rod 301, which is far away from the first crank arm 2, is fixedly connected with a second crank arm 4, the metal sleeve 302 is rotatably connected with the outer side of the central rod 301, the metal sleeve 302 is made of 45 # steel, a groove 303 is formed in the outer side of the central rod 301 and located inside the metal sleeve 302, a filling hole 304 is formed in one side of the outer side of the metal sleeve 302 and located inside the groove 303, and a sealing plug 305 is arranged inside the filling hole 304.

The axes of the first main journal 1 and the second main journal 5 are on the same straight line, and the axis of the connecting rod journal 3 is parallel to the axis of the first main journal 1, so that the practical use requirements of the crankshaft body can be better met.

One side of the moving block 12 close to the adjusting screw 9 is provided with a sixty-degree inclined surface, one end of the moving plate 11 close to the moving block 12 is provided with an inclined surface matched with the inclined surface on the outer side of the moving block 12, one end of the moving plate 11 close to the moving block 12 is connected with the inclined surface on the outer side of the moving block 12 in a sliding mode, and the moving plate 11 can push the moving block 12 to slide in the L-shaped groove 7 while moving through matching between the inclined surfaces.

Wherein, lead to groove 17 and the horizontal plane and be thirty degrees contained angles, through setting up the logical groove 17 of slope for spacing post 14 can mutually support with leading to groove 17, thereby through the removal of movable block 12, promotes limiting plate 16 and gag lever post 15 and removes, and then accomplishes the spacing operation of locking.

Wherein, keyway 19 has been seted up to the bottom of cooperation groove 6 inner wall, the bottom of second main journal 5 is provided with the parallel key 20 of mutually supporting with keyway 19, and through the cooperation between keyway 19 and the parallel key 20, it is spacing to be convenient for better carry out the position of second main journal 5 in cooperation groove 6 inside, prevents that second main journal 5 from taking place to rotate in the inside of cooperation groove 6, conveniently aligns the installation simultaneously.

Wherein, through-hole 21 has all been seted up in the outside of first crank arm 2 and second crank arm 4, is convenient for better increase the radiating effect to connecting rod neck 3 when equipment rotates through setting up through-hole 21.

The top and the bottom of the inner wall of the L-shaped groove 7 and one side of the moving block 12 are both provided with sliding grooves 23, the top and the bottom of the moving block 12 are both fixedly connected with sliding blocks 24, the sliding blocks 24 are both in sliding connection with the corresponding sliding grooves 23, and through the matching between the sliding blocks 24 and the sliding grooves 23, the movement of the moving block 12 is better limited.

An inner hexagonal groove 25 is formed in the bottom of the adjusting knob 10, and the adjusting knob 10 and the adjusting screw 9 can be adjusted in a rotating mode by conveniently using an external inner hexagonal tool through the inner hexagonal groove 25.

The using state of the invention is as follows: in the practical application process, firstly, a plurality of crank shafts are manufactured, each of which is composed of a first main journal 1, a first crank arm 2, a connecting rod journal 3, a second crank arm 4 and a second main journal 5, one end of the first main journal 1 is fixedly connected with the outer side of the first crank arm 2, one end of the second main journal 5 is fixedly connected with the outer side of the second crank arm 4, the connecting rod journal 3 is arranged between the first crank arm 2 and the second crank arm 4, then, two crank shafts are taken, as shown in fig. 2, the second main journal 5 at one end of one crank shaft is aligned with the first main journal 1 at one end of the other crank shaft, a flat key 20 at the bottom of the second main journal 5 is aligned with a key groove 19 at the bottom of the inner wall of a matching groove 6, then, the second main journal 5 is inserted into the matching groove 6, and the flat key 20 enters the key groove 19, then, the adjusting knob 10 and the adjusting screw 9 are rotationally adjusted by an external hexagon socket head tool to drive the moving plate 11 to move in the L-shaped groove 7, the moving plate 11 can be pushed to slide in the L-shaped groove 7 while moving under the action of the inclined plane, meanwhile, the limiting plate 16 and the limiting rod 15 are pushed to move by the sliding of the moving block 12 and the matching between the limiting column 14 and the through groove 17, and the return spring 18 is extruded to enable the bottom of the limiting rod 15 to extend into the corresponding limiting groove 22, so that the locking limiting operation is completed, when the connecting rod neck 3 is worn and needs to be replaced, the adjusting knob 10 and the adjusting screw 9 can be rotationally adjusted by the external hexagon socket head tool to drive the moving plate 11 to move and return in the L-shaped groove 7, and under the elastic force action of the spring 18, make gag lever post 15 and limiting plate 16 return, gag lever post 15 breaks away from the inside of spacing groove 22 to under spacing post 14 and the mating reaction that leads to between the groove 17, make movable block 12 return, then can dismantle the change to corresponding bent axle body, thereby need not to change equipment wholly, thereby very big reduction use cost, and it is convenient to dismantle easy operation, is favorable to practical application.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like are used in the orientations and positional relationships indicated in the drawings only for the convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore, are not to be construed as limiting the present invention.

Furthermore, the terms "first", "second", "third", "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby the features defined as "first", "second", "third", "fourth" may explicitly or implicitly include at least one such feature.

In the present invention, unless otherwise explicitly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be understood broadly, for example, as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (9)

1. The utility model provides a combination formula bent axle convenient to dismantle change, its characterized in that includes first main journal (1), first crank arm (2), connecting rod neck (3), second crank arm (4) and second main journal (5), the outside fixed connection of the one end of first main journal (1) and first crank arm (2), connecting rod neck (3) set up between first crank arm (2) and second crank arm (4), the outside fixed connection of the one end of second main journal (5) and second crank arm (4), the one end that first crank arm (2) were kept away from in first main journal (1) has seted up cooperation groove (6), the size of cooperation groove (6) and the size of second main journal (5) mutually support, the inside of first main journal (1) just is located one side of cooperation groove (6) and has seted up L type groove (7), the outside of first main journal (1) just is located the below of L type groove (7) and has seted up adjusting groove (8), the inside and the adjusting screw that is located L type groove (6) top of adjusting screw (9) is connected with adjusting screw (11), adjusting screw (11) and adjusting screw (11) are connected with the movable plate (11) the adjusting screw thread adjusting screw (11) and adjusting screw (11) are connected with the movable plate (11), the utility model discloses a spacing structure of L type groove (7) including movable block (11), one side sliding connection who just is located movable block (11) of inner wall in L type groove (7) has movable block (12), one side fixedly connected with dead lever (13) of movable block (11) are kept away from in movable block (12), one end fixedly connected with spacing post (14) of movable block (12) are kept away from in dead lever (13), the bottom of L type groove (7) inner wall just is located the below sliding connection of spacing post (14) and has gag lever post (15), the bottom of gag lever post (15) extends to the inside of cooperation groove (6), the top fixedly connected with limiting plate (16) of gag lever post (15), logical groove (17) have been seted up in the outside of limiting plate (16), gag lever post (14) run through logical groove (17) and with logical groove (17) sliding connection, return spring (18) have been overlapped in the outside of gag lever post (15) and the below that is located limiting plate (16), spacing groove (22) of mutually supporting with gag lever post (15) are seted up in the outside of second main journal (5).

2. The combined crankshaft convenient to disassemble and replace according to claim 1, wherein the connecting rod neck (3) is formed by a central rod (301) and a metal sleeve (302), one end of the central rod (301) is fixedly connected with a first crank arm (2), one end of the central rod (301) far away from the first crank arm (2) is fixedly connected with a second crank arm (4), the metal sleeve (302) is rotatably connected with the outer side of the central rod (301), the metal sleeve (302) is made of No. 45 steel, a groove (303) is formed in the outer side of the central rod (301) and located inside the metal sleeve (302), a filling hole (304) is formed in the outer side of the metal sleeve (302) and located on one side of the groove (303), and a sealing plug (305) is arranged inside the filling hole (304).

3. A combined crankshaft convenient for disassembly and replacement as claimed in claim 1, wherein the axes of the first main journal (1) and the second main journal (5) are on the same straight line, and the axis of the connecting rod journal (3) and the axis of the first main journal (1) are parallel to each other.

4. The combined crankshaft convenient to disassemble and replace as claimed in claim 1, wherein one side of the moving block (12) close to the adjusting screw (9) is provided with a sixty degree inclined surface, one end of the moving plate (11) close to the moving block (12) is provided with an inclined surface matched with the inclined surface on the outer side of the moving block (12), and one end of the moving plate (11) close to the moving block (12) is connected with the inclined surface on the outer side of the moving block (12) in a sliding manner.

5. The combined crankshaft convenient to disassemble and replace as claimed in claim 1, wherein the through slot (17) forms an included angle of thirty degrees with the horizontal plane.

6. A combined crankshaft convenient to disassemble and replace as claimed in claim 1, wherein the bottom of the inner wall of the matching groove (6) is provided with a key groove (19), and the bottom of the second main journal (5) is provided with a flat key (20) matched with the key groove (19).

7. The combined crankshaft convenient to disassemble and replace as claimed in claim 1, wherein the outer sides of the first crank arm (2) and the second crank arm (4) are provided with through holes (21).

8. The combined crankshaft convenient to disassemble and replace as claimed in claim 1, wherein sliding grooves (23) are formed in the top and the bottom of the inner wall of the L-shaped groove (7) and located on one side of the moving block (12), sliding blocks (24) are fixedly connected to the top and the bottom of the moving block (12), and the sliding blocks (24) are slidably connected with the corresponding sliding grooves (23).

9. The combined crankshaft convenient to disassemble and replace as claimed in claim 1, wherein the bottom of the adjusting knob (10) is provided with a hexagon socket (25).

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