An engine piston connecting rod positioning and installation structure

Abstract

The present application provides an engine piston connecting rod positioning and installation structure, belonging to the technical field of piston connecting rod positioning. The engine piston connecting rod positioning and installation structure includes a piston body, a connecting component and a positioning component. The big-end collar is arranged at the bottom of the connecting rod body. The small-end collar is movably sleeved on the piston pin. The positioning component includes a crankpin, a crank body and a positioning collar. A pin hole through which the crankpin can pass is formed in the crank body. There are two crank bodies symmetrically arranged with respect to the connecting rod body. The big-end collar is movably sleeved outside the middle end of the crankpin. The crankpin sequentially passes through the two pin holes. Two symmetric threaded portions are arranged on the surface of the crankpin. The positioning collar is arranged on both sides of each crank body. The positioning collar is threadedly sleeved on the corresponding threaded portion. The engine piston connecting rod positioning and installation structure facilitates the adjustment of the distance between the big-end collar and the crank body.

Description

Technical Field

[0001] This application relates to the technical field of piston connecting rod positioning, and more particularly, to an engine piston connecting rod positioning and installation structure. Background Art

[0002] The piston connecting rod group converts the reciprocating motion of the piston into the rotational motion of the crankshaft, and at the same time converts the force acting on the piston into the torque output by the crankshaft to drive the rotation of the vehicle wheels. It is a transmission part of the engine, which transmits the pressure of the combustion gas to the crankshaft, causing the crankshaft to rotate and output power. The piston connecting rod group mainly consists of a piston, piston rings, a piston pin, a connecting rod, connecting rod bearings, etc.

[0003] The connecting rod assembly in the piston connecting rod group includes a connecting rod body, a big end collar and a small end collar of the connecting rod. The big end collar and the small end collar of the connecting rod are respectively arranged at the bottom and top of the connecting rod body. When positioning the big end collar of the connecting rod, the axial clearance between the big end collar of the connecting rod and the crank is small, which will result in poor lubrication effect when the big end collar of the connecting rod rotates, and the hardness difference between the mating surfaces of the connecting rod and the crank is large, which will easily cause wear or burning of the big end collar of the connecting rod, and even damage other components such as the crankshaft, the connecting rod small end needle bearing and the connecting rod. The existing piston connecting rod positioning and installation structures often fail to position the clearance between the big end collar of the connecting rod and the crank well, so there are certain limitations. Summary of the Invention

[0004] To make up for the above deficiencies, this application provides an engine piston connecting rod positioning and installation structure, aiming to improve the problems proposed above.

[0005] The embodiment of this application provides an engine piston connecting rod positioning and installation structure, including a piston body, a connection component and a positioning component. The piston body is in an inverted cup shape, through holes are opened in the middle of both sides of the piston body, a piston pin is arranged inside the piston body, and both ends of the piston pin are respectively located in the through holes on both sides. The connection component includes a connecting rod body, a small end collar and a big end collar. The small end collar is arranged at the top of the connecting rod body, the big end collar is arranged at the bottom of the connecting rod body, the small end collar is movably sleeved on the piston pin, the positioning component includes a crank pin, a crank body and a positioning collar. A pin hole for the crank pin to pass through is opened on the crank body. There are two crank bodies symmetrically arranged with respect to the connecting rod body. The big end collar is movably sleeved outside the middle end of the crank pin. The crank pin passes through the two pin holes in sequence. Two symmetric threaded portions are arranged on the surface of the crank pin. The positioning collar is arranged on both sides of each crank body, and the positioning collar is threadedly sleeved on the corresponding threaded portion.

[0006] In the above implementation process, when the piston connecting rod is installed, the through hole in it can be used for the piston pin to pass through. The piston pin is passed through the through hole on one side, and the small head ring is extended into the piston body, so that the piston pin passes through the small head ring and passes through the through hole on the other side. At this time, the small head ring is sleeved on the outside of the piston pin. Then the crank body needs to be installed. First, the crank pin is passed through the large head ring, and the positioning ring is screwed on the threaded part so that there are positioning rings on both sides of the large head ring. Then the left and right ends of the crank pin are passed through the pin holes on the crank bodies on both sides respectively. At this time, the two cranks The body is located on both sides of the big head collar, and then the two positioning collars close to the left and right ends of the crank pin are screwed onto the corresponding threaded parts. At this time, positioning collars are provided on the left and right sides of each crank body. The positioning collars on the left and right sides of the crank body are rotated to make the positioning collars rotate on the threads, and the positioning collars on the left and right sides are close to each other so as to tighten and fix the crank body between them. In addition, the axial clearance between the crank body and the big head collar is adjusted, and the distance between the crank body and the big head collar is adjusted through the process of rotating and tightening the positioning collar.

[0007] In a specific embodiment, a gasket is provided on a side of the positioning collar close to the crank body.

[0008] In the above implementation process, the gasket is set to a material with toughness, so that when the positioning collar is close to the crank body, it can better resist the crank body.

[0009] In a specific embodiment, the outer diameter of the gasket is smaller than the outer diameter of the positioning collar.

[0010] In the above implementation process, this design makes the outer ring diameter of the positioning collar larger than the outer ring diameter of the gasket, so that a person's hand can directly contact and rotate the positioning collar.

[0011] In a specific embodiment, a plug pin retaining ring is disposed inside the ends of the two through holes that are away from each other, and the plug pin retaining ring is movably connected to the piston pin.

[0012] In the above implementation process, after the left and right ends of the piston pin are located inside the through holes on both sides, the pin snap ring is adapted to the piston pin, and the piston pin is fixed in position by the pin snap ring. The method of fixing the piston pin by the pin snap ring is a prior art and will not be elaborated here.

[0013] In a specific implementation manner, the outer ring of the piston body is provided with a piston ring installation groove, and three piston ring installation grooves are provided and are equidistantly distributed.

[0014] In the above implementation process, the piston ring installation groove can be used to place piston rings, such as oil rings, steam rings, etc., and the three piston ring installation grooves are convenient for installing different types of piston rings.

[0015] In a specific implementation, a first bearing is provided on the inner ring of the small head collar. The first bearing is located outside the piston pin, and the small head collar is rotatably connected to the piston pin through the first bearing.

[0016] In the above implementation process, the small head collar is rotatably connected to the piston pin through the first bearing, so as to effectively realize the rotational installation process between the small head collar and the piston pin.

[0017] In a specific implementation, a first rubber washer is provided on the inner ring of the first bearing. The inner ring of the first rubber washer abuts against the outer ring of the piston pin.

[0018] In the above implementation process, when the piston pin passes through the small head collar, the outer ring of the piston pin will pass through the inner ring of the first rubber washer. Through the abutting action of the first rubber washer on the outer ring of the piston pin, the lateral position of the installed small head collar is not likely to change.

[0019] In a specific implementation, a second bearing is provided on the inner ring of the large head collar. The second bearing is located outside the crank pin, and the large head collar is rotatably connected to the crank pin through the second bearing.

[0020] In the above implementation process, the large head collar is rotatably connected to the crank pin through the second bearing, so as to effectively realize the rotational installation process between the large head collar and the crank pin.

[0021] In a specific implementation, a second rubber washer is provided on the inner ring of the second bearing. The inner ring of the second rubber washer abuts against the outer ring of the crank pin.

[0022] In the above implementation process, when the crank pin passes through the large head collar, the outer ring of the crank pin will pass through the inner ring of the second rubber washer. Through the abutting action of the second rubber washer on the outer ring of the crank pin, the lateral position of the installed large head collar is not likely to change.

[0023] In a specific implementation, a wear-resistant and corrosion-resistant coating is provided on the surface of the connecting rod body.

[0024] In the above implementation process, the wear-resistant and corrosion-resistant coating is a paint material layer with wear-resistant and corrosion-resistant properties. The specific model is not elaborated here. This design is to improve the wear-resistant and corrosion-resistant properties of the connecting rod body. Description of the Drawings

[0025] To more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0026] Figure 1 is a schematic structural diagram of a positioning and installation structure of an engine piston connecting rod provided by an embodiment of the present application;

[0027] Figure 2 is a schematic structural diagram of a connection component provided by an embodiment of the present application;

[0028] Figure 3 is a front sectional view of a piston body provided by an embodiment of the present application;

[0029] Figure 4 is a side view of a piston body provided by an embodiment of the present application;

[0030] Figure 5 is a side view between a small head collar and a piston pin provided by an embodiment of the present application;

[0031] Figure 6 is a front sectional view of a crank pin provided by an embodiment of the present application;

[0032] Figure 7 is a schematic structural diagram of a positioning component provided by an embodiment of the present application;

[0033] Figure 8 provided by an embodiment of the present application Figure 7 side view of one of the positioning collars in;

[0034] Figure 9 provided by an embodiment of the present application Figure 7 schematic structural diagram when the crank pin exists alone in;

[0035] Figure 10 is a side view of a large head collar and a crank pin provided by an embodiment of the present application.

[0036] In the figure: 100 - piston body; 110 - through hole; 111 - piston pin snap ring; 120 - piston pin; 130 - piston ring installation groove; 200 - connection component; 210 - connecting rod main body; 220 - small head collar; 221 - first bearing; 2211 - first rubber washer; 230 - large head collar; 231 - second bearing; 2311 - second rubber washer; 300 - positioning component; 310 - crank pin; 311 - threaded part; 320 - crank body; 321 - pin hole; 330 - positioning collar; 331 - gasket. Detailed implementation mode

[0037] Next, the technical solutions in the embodiments of the present application will be described in conjunction with the accompanying drawings in the embodiments of the present application.

[0038] To make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0039] Please refer to Figure 1-10 , the present application provides an engine piston connecting rod positioning and installation structure, including a piston body 100, a connecting component 200 and a positioning component 300. The piston body 100 is in an inverted cup shape. Through holes 110 are provided in the middle of both sides of the piston body 100. A piston pin 120 is arranged inside the piston body 100. Both ends of the piston pin 120 are respectively located in the through holes 110 on both sides. The connecting component 200 includes a connecting rod main body 210, a small head collar 220 and a large head collar 230. The small head collar 220 is arranged at the top of the connecting rod main body 210, and the large head collar 230 is arranged at the bottom of the connecting rod main body 210. The small head collar 220 is movably sleeved on the piston pin 120. The positioning component 300 includes a crank pin 310, a crank body 320 and a positioning collar 330. A pin hole 321 through which the crank pin 310 can pass is provided on the crank body 320. There are two crank bodies 320 symmetrically arranged with respect to the connecting rod main body 210. The large head collar 230 is movably sleeved outside the middle end of the crank pin 310. The crank pin 310 passes through the two pin holes 321 in sequence. Two symmetrical threaded portions 311 are provided on the surface of the crank pin 310. Positioning collars 330 are provided on both sides of each crank body 320. The positioning collars 330 are threadedly sleeved on the corresponding threaded portions 311.

[0040] In some specific implementation schemes, a gasket 331 is provided on the surface of the positioning collar 330 close to the crank body 320. The gasket 331 is made of a material with toughness, so that when the positioning collar 330 approaches the crank body 320, it can better abut against the crank body 320.

[0041] In some specific implementation schemes, the outer diameter of the gasket 331 is smaller than the outer diameter of the positioning collar 330. With this design, the outer diameter of the positioning collar 330 is larger than the outer diameter of the gasket 331, so that the outer ring of the positioning collar 330 can be directly contacted by hand and the positioning collar 330 can be rotated.

[0042] In some specific embodiments, plug pin snap rings 111 are provided inside the opposite ends of the two through holes 110. The plug pin snap rings 111 are movably connected to the piston pin 120. After the left and right ends of the piston pin 120 are located inside the through holes 110 on both sides, the plug pin snap rings 111 are adapted to the piston pin 120, and the position of the piston pin 120 is fixed by the plug pin snap rings 111. Among them, the method of the plug pin snap rings 111 fixing the piston pin 120 is a prior art and will not be elaborated here.

[0043] In some specific embodiments, piston ring installation grooves 130 are provided on the outer circumference of the piston body 100. There are three piston ring installation grooves 130 and they are equidistantly distributed. The piston ring installation grooves 130 can be used to place piston rings, such as oil rings, steam rings, etc. The three piston ring installation grooves 130 are for installing different types of piston rings.

[0044] In some specific embodiments, a first bearing 221 is provided on the inner circumference of the small end collar 220. The first bearing 221 is located outside the piston pin 120. The small end collar 220 is rotatably connected to the piston pin 120 through the first bearing 221. The setting that the small end collar 220 is rotatably connected to the piston pin 120 through the first bearing 221 facilitates the effective realization of the rotational installation process between the small end collar 220 and the piston pin 120.

[0045] In some specific embodiments, a first rubber washer 2211 is provided on the inner circumference of the first bearing 221. The inner circumference of the first rubber washer 2211 abuts against the outer circumference of the piston pin 120. During the process of the piston pin 120 passing through the small end collar 220, the outer circumference of the piston pin 120 will pass through the inner circumference of the first rubber washer 2211. Through the abutting effect of the first rubber washer 2211 on the outer circumference of the piston pin 120, the lateral position of the installed small end collar 220 is not easily changed.

[0046] In some specific embodiments, a second bearing 231 is provided on the inner circumference of the large end collar 230. The second bearing 231 is located outside the crank pin 310. The large end collar 230 is rotatably connected to the crank pin 310 through the second bearing 231. The setting that the large end collar 230 is rotatably connected to the crank pin 310 through the second bearing 231 facilitates the effective realization of the rotational installation process between the large end collar 230 and the crank pin 310.

[0047] In some specific embodiments, a second rubber washer 2311 is provided on the inner circumference of the second bearing 231. The inner circumference of the second rubber washer 2311 abuts against the outer circumference of the crank pin 310. During the process of the crank pin 310 passing through the large end collar 230, the outer circumference of the crank pin 310 will pass through the inner circumference of the second rubber washer 2311. Through the abutting effect of the second rubber washer 2311 on the outer circumference of the crank pin 310, the lateral position of the installed large end collar 230 is not easily changed.

[0048] In some specific embodiments, a wear-resistant and corrosion-resistant coating is provided on the surface of the connecting rod body 210. The wear-resistant and corrosion-resistant coating is a paint material layer with wear-resistant and corrosion-resistant properties. The specific model is not elaborated here. This design is to improve the wear-resistant and corrosion-resistant properties of the connecting rod body 210.

[0049] The working principle of the positioning and installation structure of the engine piston connecting rod: When installing the piston connecting rod, the through hole 110 can be penetrated by the piston pin 120. Pass the piston pin 120 through the through hole 110 on one side, extend the small head collar 220 into the piston body 100, so that the piston pin 120 passes through the small head collar 220 and passes through the through hole 110 on the other side. At this time, the small head collar 220 is sleeved outside the piston pin 120. Then, the crank body 320 needs to be installed. First, pass the crank pin 310 through the large head collar 230, screw the positioning collar 330 onto the threaded portion 311, so that there are positioning collars 330 on both sides of the large head collar 230. Then, pass the left and right ends of the crank pin 310 through the pin holes 321 on the two crank bodies 320 on both sides. At this time, the two crank bodies 320 are located on both sides of the large head collar 230. Then, screw the two positioning collars 330 close to the left and right ends of the crank pin 310 onto the corresponding threaded portions 311. At this time, there are positioning collars 330 on both the left and right sides of each crank body 320. Rotate the positioning collars 330 on both the left and right sides of the crank body 320, so that the positioning collars 330 rotate on the threads, and the positioning collars 330 on both the left and right sides approach each other, so as to tightly fix the crank body 320 therebetween. In addition, adjust the axial clearance between the crank body 320 and the large head collar 230, and through the process of rotating and tightening the positioning collar 330, it is convenient to adjust the distance between the crank body 320 and the large head collar 230.

[0050] The above are only the embodiments of the present application and are not used to limit the protection scope of the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0051] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or replacements, which should all be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An engine piston connecting rod positioning and installation structure, characterized in that, include A piston body (100), the piston body (100) being in an inverted cup shape, a through hole (110) being provided in the middle of both sides of the piston body (100), a piston pin (120) being arranged inside the piston body (100), and two ends of the piston pin (120) being respectively located in the through holes (110) on both sides; A connecting assembly (200), the connecting assembly (200) comprising a connecting rod body (210), a small head ring (220) and a large head ring (230), the small head ring (220) being arranged at the top of the connecting rod body (210), the large head ring (230) being arranged at the bottom of the connecting rod body (210), and the small head ring (220) being movably sleeved on the piston pin (120); A positioning assembly (300), the positioning assembly (300) comprising a crank pin (310), a crank body (320) and a positioning collar (330), the crank body (320) being provided with a pin hole (321) for the crank pin (310) to pass through, the crank body (320) being symmetrically provided with two pin holes (321) about the connecting rod body (210), the large-head collar (230) being movably sleeved on the outside of the middle end of the crank pin (310), the crank pin (310) passing through the two pin holes (321) in sequence, the crank pin (310) being provided with two symmetrical threaded portions (311) on the surface, the positioning collar (330) being provided on both sides of each crank body (320), the positioning collar (330) being threadedly sleeved on the corresponding threaded portion (311); A gasket (331) is provided on a surface of the positioning collar (330) close to the crank body (320); and a plug pin retaining ring (111) is provided inside the ends of the two through holes (110) that are away from each other, and the plug pin retaining ring (111) is movably connected to the piston pin (120).

2. The positioning and installation structure of an engine piston connecting rod according to claim 1, characterized in that The outer diameter of the gasket (331) is smaller than the outer diameter of the positioning collar (330).

3. A positioning and installation structure of an engine piston connecting rod according to claim 1, characterized in that, The outer ring of the piston body (100) is provided with a piston ring installation groove (130), and three piston ring installation grooves (130) are provided and are equidistantly distributed.

4. A positioning and installation structure of an engine piston connecting rod according to claim 1, characterized in that, The inner ring of the small head ring (220) is provided with a first bearing (221), the first bearing (221) is located outside the piston pin (120), and the small head ring (220) is rotatably connected to the piston pin (120) via the first bearing (221).

5. A positioning and installation structure of an engine piston connecting rod according to claim 4, characterized in that, The inner ring of the first bearing (221) is provided with a first rubber washer (2211), and the inner ring of the first rubber washer (2211) is in contact with the outer ring of the piston pin (120).

6. The positioning and installation structure of an engine piston connecting rod according to claim 1, characterized in that, The inner ring of the large head ring (230) is provided with a second bearing (231), the second bearing (231) is located outside the crank pin (310), and the large head ring (230) is rotatably connected to the crank pin (310) via the second bearing (231).

7. A positioning and installation structure of an engine piston connecting rod according to claim 6, characterized in that, The inner ring of the second bearing (231) is provided with a second rubber washer (2311), and the inner ring of the second rubber washer (2311) is in contact with the outer ring of the crank pin (310).

8. A positioning and installation structure of an engine piston connecting rod according to claim 1, characterized in that The surface of the connecting rod body (210) is provided with a wear-resistant and corrosion-resistant coating.

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