Self-lubricating crankshaft

Abstract

The utility model discloses a self-lubricating crankshaft which comprises a lubricating module, and the lubricating module comprises a crankshaft body, an oil cavity formed in the crankshaft body, a steel sheet embedded in the inner wall of the crankshaft body and a plurality of first pin rollers movably embedded in the inner side of the steel sheet. The connecting rod matched with the crankshaft is inserted into the cylindrical inserting opening, then the connecting rod rotates and rubs with the first pin roller, then the first pin roller rotates, when the concave face makes contact with the top end of the pipe body, the sponge is opened and absorbs lubricating oil entering the pipe sleeve, and meanwhile the sponge can abut against the ring body and the pipe body to ascend. When the outer wall of the first pin roller makes contact with the top end of the pipe body, the pipe body is pressed to descend, the ring body extrudes the sponge, the sponge extrudes the absorbed lubricating oil, the lubricating oil overflows from the position of the ring body and then coats the surface of the first pin roller, and the length design of the first pin roller enables the first pin roller to lubricate the outer wall of each position of the connecting rod in the cylindrical inserting opening.

Description

Technical Field

[0001] The utility model relates to the technical field of crankshaft forming, in particular to a self-lubricating crankshaft. Background Technique

[0002] The crankshaft is the main rotating part of the engine. After installing the connecting rod, it can convert the up and down (reciprocating) motion of the connecting rod into circular (rotating) motion. It is an important part of the engine, and its material is made of carbon structural steel or ductile iron. It has two important parts: the main journal and the connecting rod journal (and others). The main journal is installed on the cylinder block, the connecting rod journal is connected to the big end hole of the connecting rod, and the small end hole of the connecting rod is connected to the cylinder piston, which is a typical crank-slider mechanism.

[0003] The application number CN202320549009.2 provides a self-lubricating crankshaft connecting rod assembly, belonging to the technical field of crankshafts. It solves the problem that the wear resistance strength at the joint between the existing crankshaft and the crankshaft connecting rod is not high, seriously affecting its service life. This self-lubricating crankshaft connecting rod assembly includes a crankshaft main body and a crankshaft connecting rod and other structures that are in transmission connection with the crankshaft main body. The utility model has the advantages of high wear resistance strength, self-lubricating effect and long service life. However, when it is specifically used, there are certain problems, such as: although there are many lubricating balls arranged on the wear-resistant metal plate, there is a certain distance between the lubricating balls, and uniform lubrication cannot be achieved in lubricating the connecting rod. Moreover, the setting of a large number of lubricating balls increases the assembly difficulty of this part. Content of the Utility Model

[0004] The utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0005] For this reason, the technical solution adopted by the utility model is as follows:

[0006] A self-lubricating crankshaft includes a lubrication module. The lubrication module includes a crankshaft main body, an oil cavity opened inside the crankshaft main body, steel sheets embedded in the inner wall of the crankshaft main body, a plurality of first rollers movably embedded inside the steel sheets, concave surfaces arranged on the first rollers, a tube body arranged inside the crankshaft main body and attached to the first rollers, a ring body installed inside the tube body, a sponge connected to the bottom of the ring body, a tube sleeve movably sleeved outside the tube body and connected to the inner wall of the oil cavity, and two openings opened at the bottom end of the tube sleeve. The bottom end of the tube body extends movably into the oil cavity.

[0007] By adopting the above technical solution, the connecting rod matching the crankshaft is inserted into the cylindrical socket, and then the connecting rod rotates and rubs against the first roller, and then the first roller rotates. When the concave surface contacts the top of the tube body, the sponge opens and absorbs the lubricating oil entering the sleeve. At the same time, it will push the ring body and the tube body to rise. Then when the outer wall of the first roller contacts the top of the tube body, it will press the tube body down, and then the ring body squeezes the sponge to squeeze out the absorbed lubricating oil. The lubricating oil overflows from the ring body position and then covers the surface of the first roller. The length of the first roller is designed so that it can lubricate every outer wall of the connecting rod in the cylindrical socket.

[0008] In a preferred example, the utility model can be further configured as follows: a cylindrical socket is provided on the crankshaft body, and the cylindrical socket is located at the top of the oil chamber.

[0009] In a preferred example, the utility model can be further configured as follows: a plurality of second rollers are movably embedded in the inner wall of the circular socket, the plurality of second rollers are arranged at equal intervals and in an arc shape, and the second rollers are made of metal material.

[0010] In a preferred example, the utility model can be further configured as follows: the diameter of the first roller is equal to the diameter of the second roller, and the distance from the center of the first roller to the center of the cylindrical socket is equal to the distance from the center of the second roller to the center of the cylindrical socket.

[0011] In a preferred example, the utility model can be further configured as follows: two oil replenishing channels communicating with the inside of the oil chamber are provided on the crankshaft body, the two oil replenishing channels are vertically symmetrical about the oil chamber, and sealing plugs are inserted into the oil replenishing channels.

[0012] In a preferred example, the utility model can be further configured as follows: two reinforcing ribs are installed inside the oil chamber, and the two reinforcing ribs are staggered with a plurality of pipe sleeves.

[0013] In a preferred example, the present invention can be further configured as follows: the sponge is located inside the tube body, and the bottom end movably extends into the tube sleeve.

[0014] By adopting the above technical solution, the beneficial effects achieved by the utility model are as follows:

[0015] 1. In the present utility model, the connecting rod matching with the crankshaft is inserted into the cylindrical socket, then the connecting rod rotates and rubs against the first roller, and then the first roller rotates. When the concave surface contacts the top end of the tube body, the sponge expands and absorbs the lubricating oil entering the tube sleeve. At the same time, it also pushes the ring body and the tube body upward. Then, when the outer wall of the first roller contacts the top end of the tube body, it presses the tube body downward, and then the ring body squeezes the sponge to squeeze out the absorbed lubricating oil. The lubricating oil overflows from the position of the ring body and then coats the surface of the first roller. The length design of the first roller enables it to lubricate every outer wall of the connecting rod within the cylindrical socket.

[0016] 2. In the present utility model, the arrangement of a small number of first rollers and second rollers makes it relatively easy to assemble the lubrication structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a perspective view of the overall structure of the present utility model;

[0018] Figure 2 is a front cross-sectional view of the crankshaft main body of the present utility model;

[0019] Figure 3 is a left cross-sectional view of the crankshaft main body of the present utility model;

[0020] Figure 4 is an exploded view of a partial structure of the lubrication module of the present utility model.

[0021] REFERENCE NUMERALS:

[0022] 100, lubrication module; 110, crankshaft main body; 120, oil cavity; 130, steel sheet; 140, first roller; 150, concave surface; 160, tube body; 170, ring body; 180, sponge; 190, tube sleeve; 191, opening;

[0023] 200, second roller;

[0024] 300, sealing plug;

[0025] 400, reinforcing rib. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] To make the objectives, technical solutions, and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with the specific embodiments and with reference to the accompanying drawings. It should be noted that, without conflict, the embodiments of the present utility model and the features in the embodiments can be combined with each other.

[0027] It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present utility model.

[0028] The following describes a self-lubricating crankshaft provided by some embodiments of the present utility model with reference to the accompanying drawings. Example 1

[0029] As shown in the figure Figures 1-4 A self-lubricating crankshaft provided by the utility model includes a lubrication module 100. The lubrication module 100 includes a crankshaft main body 110, an oil cavity 120 opened inside the crankshaft main body 110, steel sheets 130 embedded in the inner wall of the crankshaft main body 110, a plurality of first rollers 140 movably embedded inside the steel sheets 130, concave surfaces 150 arranged on the first rollers 140, a tube body 160 arranged inside the crankshaft main body 110 and attached to the first rollers 140, a ring body 170 installed inside the tube body 160, a sponge 180 connected to the bottom of the ring body 170, a tube sleeve 190 movably sleeved outside the tube body 160 and connected to the inner wall of the oil cavity 120, and two openings 191 opened at the bottom end of the tube sleeve 190. The bottom end of the tube body 160 extends into the oil cavity 120 movably.

[0030] Furthermore, a cylindrical socket is arranged on the crankshaft main body 110. The cylindrical socket is located at the top of the oil cavity 120. The cylindrical socket is provided to provide conditions for installing a connecting rod.

[0031] Furthermore, two reinforcing ribs 400 are installed inside the oil cavity 120. The two reinforcing ribs 400 are arranged staggeredly with a plurality of tube sleeves 190. The reinforcing ribs 400 are provided to improve the structural strength of the crankshaft main body 110 and reduce the problem of weak internal structure caused by the oil cavity 120.

[0032] Furthermore, the sponge 180 is located inside the tube body 160, and the bottom end extends into the tube sleeve 190 movably. With this dimension design, when the ring body 170 moves up and down, the sponge 180 can be caused to contract and expand, providing conditions for absorbing and squeezing out lubricating oil. Example 2

[0033] As shown in the figure Figures 2-3 Based on Example 1, a plurality of second rollers 200 are movably embedded in the inner wall of the circular socket. The plurality of second rollers 200 are arranged at equal intervals and in an arc shape. The second rollers 200 are made of metal materials. The second rollers 200 are provided to improve the stability when the connecting rod rotates.

[0034] Specifically, the diameter of the first roller 140 is equal to the diameter of the second roller 200, and the distance from the center of the first roller 140 to the center of the cylindrical socket is equal to the distance from the center of the second roller 200 to the center of the cylindrical socket. With this dimension design, the first roller 140 and the second roller 200 cooperate to make the rotation of the connecting rod smoother. Example 3

[0035] As shown in the figureFigures 1-2 As shown in the above embodiment, two oil replenishing channels communicating with the inside of the oil chamber 120 are provided on the crankshaft body 110. The two oil replenishing channels are vertically symmetrical about the oil chamber 120. A sealing plug 300 is inserted into the oil replenishing channel. By providing the oil replenishing channel, lubrication can be easily replenished into the oil chamber 120, improving the comfort of using this product.

[0036] The working principle and usage process of the present utility model: Before using this device, insert the connecting rod matching the crankshaft into the cylindrical socket, and then the first roller 140 and the second roller 200 cooperate to limit it. Then, the frictional force between the connecting rod and the first roller 140 causes the first roller 140 to rotate. Every time the first roller 140 rotates one week, the concave surface 150 will contact the tube body 160 once. When the concave surface 150 is aligned with the top end of the tube body 160, the sponge 180 expands and then pushes up the ring body 170 and the tube body 160. Then, when the outer wall of the first roller 140 contacts the top end of the tube body 160, it will press the tube body 160 down, and then the ring body 170 squeezes the sponge 180 to make the sponge 180 squeeze out the absorbed lubricating oil. The lubricating oil overflows from the position of the ring body 170 and then coats the surface of the first roller 140. The length design of the first roller 140 enables it to lubricate every outer wall of the connecting rod in the cylindrical socket. After that, the design of a small number of the first roller 140 and the second roller 200 makes it easier to assemble the lubrication structure.

[0037] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A self-lubricating crankshaft, characterized in that: include: A lubrication module (100), the lubrication module (100) comprising a crankshaft body (110), an oil chamber (120) opened inside the crankshaft body (110), a steel sheet (130) embedded in the inner wall of the crankshaft body (110), a plurality of first rollers (140) movably embedded inside the steel sheet (130), a concave surface (150) disposed on the first rollers (140), and a plurality of first rollers (140) disposed inside the crankshaft body (110) and adjacent to the first rollers (140). A tube body (160) fitted with a roller (140), a ring body (170) installed inside the tube body (160), a sponge (180) connected to the bottom of the ring body (170), a tube sleeve (190) movably sleeved on the outside of the tube body (160) and connected to the inner wall of the oil chamber (120), and two openings (191) opened at the bottom end of the tube sleeve (190), wherein the bottom end of the tube body (160) movably extends into the oil chamber (120).

2. A self-lubricating crankshaft according to claim 1, characterized in that: The crankshaft body (110) is provided with a cylindrical socket, and the cylindrical socket is located at the top of the oil chamber (120).

3. A self-lubricating crankshaft according to claim 2, characterized in that: A plurality of second rollers (200) are movably embedded in the inner wall of the cylindrical socket, the plurality of second rollers (200) are arranged at equal intervals and in an arc shape, and the second rollers (200) are made of a metal material.

4. A self-lubricating crankshaft according to claim 3, characterized in that: The diameter of the first roller (140) is equal to the diameter of the second roller (200), and the distance from the center of the first roller (140) to the center of the cylindrical socket is equal to the distance from the center of the second roller (200) to the center of the cylindrical socket.

5. The self-lubricating crankshaft according to claim 1, characterized in that: The crankshaft body (110) is provided with two oil replenishment channels which are in communication with the interior of the oil chamber (120); the two oil replenishment channels are vertically symmetrical with respect to the oil chamber (120); and sealing plugs (300) are inserted into the oil replenishment channels.

6. A self-lubricating crankshaft according to claim 1, characterized in that: Two reinforcing ribs (400) are installed inside the oil cavity (120), and the two reinforcing ribs (400) and the plurality of pipe sleeves (190) are arranged in an alternating manner.

7. A self-lubricating crankshaft according to claim 1, characterized in that: The sponge (180) is located inside the tube body (160), and the bottom end movably extends into the tube sleeve (190).

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