CN115949664A - Split connecting rod of large-displacement internal combustion engine - Google Patents
Split connecting rod of large-displacement internal combustion engine Download PDFInfo
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- CN115949664A CN115949664A CN202211612899.3A CN202211612899A CN115949664A CN 115949664 A CN115949664 A CN 115949664A CN 202211612899 A CN202211612899 A CN 202211612899A CN 115949664 A CN115949664 A CN 115949664A
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- connecting rod
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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Abstract
The invention discloses a split connecting rod of a large-displacement internal combustion engine, wherein two ends of a connecting rod body (1) are respectively provided with an end hole I (4) and a semi-annular structural body I (12), two sides of the semi-annular structural body I (12) are respectively and symmetrically provided with a mounting hole I (13), a connecting rod cover (2) is provided with a semi-annular structural body II (21), two sides of the semi-annular structural body II (21) are also respectively and symmetrically provided with a mounting hole II (22), the mounting holes I (13) on the two sides of the semi-annular structural body I (12) are respectively and correspondingly connected through a positioning connecting combination (3) and the mounting holes II (22) on the two sides of the semi-annular structural body II (21) and then combined to form a circular annular body, an inner hole of the circular annular body is set as the end hole II (5) of the connecting rod body (1), and the diameter of the end hole I (4) is smaller than that of the end hole II (5) formed by combination. The invention can ensure that the assembly precision between the connecting rod cover bodies is high, thereby ensuring the precision stability of the connecting rod big end hole and improving the matching precision with the crankshaft.
Description
Technical Field
The invention relates to a split connecting rod, in particular to a split connecting rod of a large-displacement internal combustion engine.
Background
The connecting rod is a common part of the crankshaft of the engine, and the main function of the connecting rod is to connect the piston and the crankshaft, so that the reciprocating linear motion of the piston is changed into the rotary motion of the crank, and the power can be output. Because the connecting rod bears higher impact load and inertia force during working, the connecting rod needs to have higher strength and stable performance output, and can satisfy and can both guarantee components of a whole that can function independently connecting rod assembly precision and stable performance after repeated split or combination connecting rod lid, current components of a whole that can function independently connecting rod is fixed with bolted connection between the connecting rod body and the connecting rod lid, although can satisfy the requirement of connecting rod split or combination, the assembly precision between the connecting rod lid is low, can not guarantee the big end hole precision of connecting rod stable, lead to the problem such as the cooperation of connecting rod main end and bent axle is not good.
Disclosure of Invention
The invention provides a split connecting rod of a large-displacement internal combustion engine, which can ensure that the assembly precision between a connecting rod body and a connecting rod cover is high, thereby ensuring the precision stability of a large end hole of the connecting rod and improving the matching precision with a crankshaft. The invention adopts the following technical scheme: the utility model provides a components of a whole that can function independently connecting rod of large discharge capacity internal-combustion engine, it mainly includes connecting rod body and connecting rod cap, can dismantle between connecting rod body and the connecting rod cap, connecting rod body one end set up to the end hole I of connecting rod, the other end is equipped with semi-annular structure I, I both sides of semi-annular structure are the symmetry respectively and are equipped with mounting hole I, the connecting rod cap on be equipped with semi-annular structure II, II both sides of semi-annular structure at connecting rod cap 2 also are the symmetry respectively and are equipped with mounting hole II, the mounting hole I of I both sides of semi-annular structure corresponds the back combination through the location connection combination with the mounting hole II of the both sides of semi-annular structure II respectively and forms circular ring body, the hole of circular ring body sets up to the end hole II of connecting rod body, the diameter of end hole I is less than the diameter of the end hole II that the combination formed.
Furthermore, each positioning connection combination mainly comprises a positioning hole sleeve, positioning counter bores and connecting bolts, wherein the positioning hole sleeve is located at one end of the mounting hole I and protrudes out of one end face of the mounting hole I, the positioning counter bores are located at the orifice end of the mounting hole II, each positioning hole sleeve corresponds to each positioning counter bore, when the semi-annular structural body I of the connecting rod body needs to be positioned and connected with the semi-annular structural body II of the connecting rod cover to form an end hole II of the connecting rod body, the positioning hole sleeves on two sides correspondingly press in the positioning counter bores on two sides to form a hidden positioning structure, and then the connecting rod body and the connecting rod cover are detachably positioned and connected after each side penetrates into the positioning counter bores of the mounting hole I, the mounting hole II and the hidden positioning counter bores through the connecting bolts.
Furthermore, the positioning hole sleeve is formed by inserting a solid positioning pin into the mounting hole I, enabling the solid positioning pin to protrude out of one end face of the mounting hole I, enabling the protruding part to be smaller than the height of the positioning counter bore, and then drilling a hole on the solid positioning pin to form the positioning hole sleeve.
Furthermore, after the semi-annular structure body I of the connecting rod body is connected with the semi-annular structure body II of the connecting rod cover in a locating mode, the mounting hole I, the mounting hole II and the locating counter bore are arranged concentrically.
Furthermore, the mounting hole I is a through hole.
Furthermore, the mounting hole II is a threaded hole.
The invention has the following beneficial effects: after the technical scheme is adopted, the hidden positioning pin structure is additionally arranged when the connecting rod body and the connecting rod cover are combined, the positioning function can be achieved under the condition that the wall of the connecting rod body is not damaged, the matching precision is improved, the hidden positioning pin structure can be widely applied to a large-displacement internal combustion engine, the problem of positioning precision during the disassembly and the installation of the connecting rod cover can be solved, the production efficiency and the assembly quality are effectively improved, the matching precision of the assembled connecting rod cover and a crankshaft is improved, and the service performance and the service life of the split connecting rod are improved in the process of matching and rotating with a crankshaft connecting rod neck. The hidden positioning pin structure between the connecting rod body and the connecting rod cover during connection is formed by embedding the solid positioning pin into the connecting rod body and then drilling the hole, the connecting rod cover and the connecting rod body can be repeatedly disassembled, the hidden positioning hole sleeve structure is adopted to improve the assembly quality of the connecting rod cover body, and the hidden positioning pin structure is simple and convenient to process and good in use effect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic view of a split connecting rod structure of a combined large displacement internal combustion engine.
Fig. 2 is a schematic structural view of the connecting rod body of the present invention.
Fig. 3 is a schematic structural view of the connecting rod cap of the present invention.
Fig. 4 is a schematic view of the positioning hole sleeve of the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the scope of the present invention will be more clearly and clearly defined.
In the figures 1, 2 and 3, the invention provides a split connecting rod of a large-displacement internal combustion engine, which mainly comprises a connecting rod body 1 and a connecting rod cover 2, wherein the connecting rod body 1 and the connecting rod cover 2 can be disassembled, one end of the connecting rod body 1 is provided with an end hole I4 of the connecting rod, the other end of the connecting rod body is provided with a semi-annular structural body I12, two sides of the semi-annular structural body I12 are respectively and symmetrically provided with a mounting hole I13, the connecting rod cover 2 is provided with a semi-annular structural body II 21, two sides of the semi-annular structural body II 21 of the connecting rod cover 2 are also respectively and symmetrically provided with a mounting hole II 22, the mounting holes I13 on two sides of the semi-annular structural body I12 are respectively and correspondingly connected with the mounting holes II 22 on two sides of the semi-annular structural body II 21 through a positioning connection combination 3 to form a circular annular body, an inner hole of the circular annular body is provided as an end hole II 5 of the connecting rod body 1, and the end hole II 5 is used for being matched with a connecting rod neck to form a kinetic energy conversion environment suitable for high-speed rotation, the diameter of the end hole I4 is smaller than that of an end hole II 5 formed by combination, each positioning connection combination mainly comprises a positioning hole sleeve 6, a positioning counter bore 7 and a connecting bolt 8, the positioning hole sleeve 6 is located at one end of the mounting hole I13 and protrudes out of one end face of the mounting hole I13, the positioning counter bore 7 is located at the orifice end of the mounting hole II 22, each positioning hole sleeve 6 corresponds to each positioning counter bore 7, the positioning hole sleeves 6 on two sides are correspondingly pressed into the positioning counter bores 7 on two sides to form a hidden positioning structure, after the semi-annular structural body I12 of the connecting rod body 1 and the semi-annular structural body II 21 of the connecting rod cover 2 are positioned and connected, the mounting hole I13, the mounting hole II 22 and the positioning counter bores 7 are concentrically arranged, the mounting hole I13 of the embodiment is a through hole, and the mounting hole II 22 of the embodiment is a threaded hole, in fig. 4, the processing steps of the positioning hole sleeve 6 of the present invention are: firstly, the connecting rod body 1 rotates downwards, then the solid positioning pin 9 enters from one end of the mounting hole and then is inserted into the mounting hole I13, the solid positioning pin 9 protrudes out of one end face of the mounting hole I13, the protruding part is guaranteed to be smaller than the height of the positioning counter bore 7, then the solid positioning pin 9 is drilled, and therefore the solid positioning pin 9 after being drilled forms the positioning hole sleeve 6.
The using process of the invention is as follows: when the split connecting rod of the large-displacement internal combustion engine is required to be connected with the crankshaft connecting rod neck, firstly, the semi-annular structural body I12 of the connecting rod body 1 and the semi-annular structural body II 21 of the connecting rod cover 2 are positioned by adopting a hidden positioning structure, then the connecting rod bolt 8 penetrates into the mounting hole I and the mounting hole II and the positioning counter bore 7 of the hidden positioning structure, then the connecting rod body 1 and the connecting rod cover 2 are detachably positioned and connected, so that the semi-annular structural body I12 and the semi-annular structural body II 21 are combined to form the end hole II 5 of the connecting rod body 1, and the crankshaft connecting rod neck is inserted into the end hole II 5 to form rotating fit.
Without being limited thereto, any changes or substitutions that are not thought of through the inventive work should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.
Claims (6)
1. The utility model provides a components of a whole that can function independently connecting rod of big discharge capacity internal-combustion engine, its characterized in that mainly includes connecting rod body (1) and connecting rod cap (2), can dismantle between connecting rod body (1) and connecting rod cap (2), connecting rod body (1) one end set up to the end hole I (4) of connecting rod, the other end is equipped with semi-annular structure I (12), semi-annular structure I (12) both sides symmetry respectively are equipped with mounting hole I (13), connecting rod cap (2) on be equipped with semi-annular structure II (21), the combination forms circular ring body after semi-annular structure II (21) both sides of semi-annular structure II (21) also respectively symmetry are equipped with mounting hole II (22), the hole of circular ring body sets up to the end hole II (5) of connecting rod body (1) through the corresponding connection back of mounting hole II (22) of location connection combination (3) and semi-annular structure II (21) both sides respectively, the diameter of end hole I (4) is less than the diameter of the end hole II (5) that the combination formed.
2. The split connecting rod of the internal combustion engine with large displacement according to claim 1, wherein each positioning connection combination mainly comprises a positioning hole sleeve (6), a positioning counter bore (7) and a connecting bolt (8), the positioning hole sleeve (6) is positioned at one end of the mounting hole I (13) and protrudes out of one end face of the mounting hole I (13), the positioning counter bore (7) is positioned at the orifice end of the mounting hole II (22), each positioning hole sleeve (6) corresponds to each positioning counter bore (7), when the semi-annular structural body I (12) of the connecting rod body (1) needs to be positioned and connected with the semi-annular structural body II of the connecting rod cover to form the end hole II (5) of the connecting rod body (1), the positioning hole sleeves (6) at two sides are correspondingly pressed into the positioning counter bores (7) at two sides to form a hidden positioning structure, and then each side penetrates through the mounting hole I (13) and the mounting hole II (22) and the positioning counter bore (7) of the hidden positioning structure through the connecting rod bolt (8) to form detachable positioning connection between the connecting rod body (1) and the connecting rod cover (2).
3. The split connecting rod of the large-displacement internal combustion engine as claimed in claim 1, wherein the locating hole sleeve (6) is formed by inserting the solid locating pin (9) into the mounting hole I (13), protruding the solid locating pin (9) out of one end face of the mounting hole I (13), the protruding part is smaller than the height of the locating counter bore (7), and then drilling the solid locating pin (9) to form the locating hole sleeve (6).
4. The split connecting rod of the large-displacement internal combustion engine as claimed in claim 2, wherein the mounting hole I (13), the mounting hole II (22) and the positioning counter bore (7) are concentrically arranged after the semi-annular structural body I (12) of the connecting rod body (1) and the semi-annular structural body II (21) of the connecting rod cover (2) are positioned and connected.
5. The split connecting rod of a large displacement internal combustion engine as claimed in claim 1, 2, 3 or 4, wherein said mounting hole i (13) is a through hole.
6. The split connecting rod of a large displacement internal combustion engine as claimed in claim 1, 2 or 4, wherein said mounting hole II (22) is a threaded hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211612899.3A CN115949664A (en) | 2022-12-15 | 2022-12-15 | Split connecting rod of large-displacement internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211612899.3A CN115949664A (en) | 2022-12-15 | 2022-12-15 | Split connecting rod of large-displacement internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115949664A true CN115949664A (en) | 2023-04-11 |
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ID=87290063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211612899.3A Pending CN115949664A (en) | 2022-12-15 | 2022-12-15 | Split connecting rod of large-displacement internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115949664A (en) |
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2022
- 2022-12-15 CN CN202211612899.3A patent/CN115949664A/en active Pending
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