CN112223195A - Connecting rod guide assembly, piston connecting rod assembly assembling tool and assembling method thereof - Google Patents
Connecting rod guide assembly, piston connecting rod assembly assembling tool and assembling method thereof Download PDFInfo
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- CN112223195A CN112223195A CN202011054154.0A CN202011054154A CN112223195A CN 112223195 A CN112223195 A CN 112223195A CN 202011054154 A CN202011054154 A CN 202011054154A CN 112223195 A CN112223195 A CN 112223195A
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- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 125000006850 spacer group Chemical group 0.000 description 3
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- 238000000429 assembly Methods 0.000 description 2
- 210000004247 hand Anatomy 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
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- 239000011425 bamboo Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/0035—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for motor-vehicles
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Abstract
The invention discloses a connecting rod guide assembly which comprises a sliding rod structure which penetrates through a cylinder hole and can slide in the cylinder hole, wherein a pin shaft which is matched with a bolt hole in the large end of a connecting rod body is arranged at the front end of the sliding rod structure. The invention also discloses a piston connecting rod assembly assembling tool with the connecting rod guide assembly and an assembling method thereof. The connecting rod guide assembly and the piston connecting rod assembly assembling tool are simple in structure and reliable in performance, the piston connecting rod assembly can be stably guided into the cylinder holes, and mixed line production of engines with different cylinder numbers can be achieved.
Description
Technical Field
The invention relates to the technical field of engine assembly, in particular to a connecting rod guide assembly, a piston connecting rod assembly tool and an assembly method thereof.
Background
The NE1 series engine comprises a three-cylinder machine, and the assembly process of a piston connecting rod assembly of the traditional three-cylinder machine comprises the steps of firstly assembling a crankshaft and then assembling the piston connecting rod assembly; the assembly process of the traditional four-cylinder machine comprises the steps of firstly assembling a piston connecting rod assembly and then assembling a crankshaft; therefore, the assembly process of the piston connecting rod assembly of the traditional three-cylinder machine is different from that of the traditional four-cylinder machine, and in order to enable two engines to carry out the assembly of the piston connecting rod assembly at the same station, a new assembly tool and an assembly method of the piston connecting rod assembly need to be designed, so that engines with different numbers of cylinders can be produced in a collinear mode.
Disclosure of Invention
The invention aims to provide a connecting rod guide assembly, a piston connecting rod assembly assembling tool and an assembling method thereof, which have the advantages of simple structure and reliable performance, and not only can lead the piston connecting rod assembly into a cylinder hole stably; and the mixed production of engines with different cylinder numbers can be realized.
In order to achieve the purpose, the invention provides a connecting rod guide assembly which comprises a sliding rod structure which penetrates through a cylinder hole and can slide in the cylinder hole, wherein the front end of the sliding rod structure is provided with a pin shaft which is matched with a bolt hole in the large end of a connecting rod body.
Further, the slide bar structure comprises a mounting bracket and slide bars, the slide bars comprise a first slide bar and a second slide bar which are sequentially arranged from top to bottom and are parallel to each other, the pin shafts comprise a first pin shaft and a second pin shaft which are used for being matched with two bolt holes on the connecting rod body respectively, the first pin shaft is arranged at the front end of the first slide bar, the second pin shaft is arranged at the front end of the second slide bar, the rear ends of the first slide bar and the second slide bar are fixed at the front end of the mounting bracket, and the upper end face of the first slide bar and the lower end face of the second slide bar can be abutted against the inner wall of the cylinder hole and can slide on the inner wall of the cylinder hole; optionally, the upper end surface of the first slide bar and the lower end surface of the second slide bar are both set to be second arc surfaces which are adaptive to the radian of the inner wall of the cylinder hole.
Further, the slide bar structure still includes the connecting block, the rear end of connecting block sets up on the installing support and sets up between first slide bar and second slide bar, the terminal surface of the front end of connecting block is used for the butt crank and sets to the first cambered surface that suits with crank surface radian.
Furthermore, the mounting bracket comprises a bracket mounting block and a bracket operating rod, the front end of the bracket mounting block is connected with a sliding rod and a connecting block, and the rear end of the bracket mounting block is connected with the front end of the bracket operating rod; optionally, a first handle is arranged at the rear end of the support operating rod.
The invention also provides a piston connecting rod assembly assembling tool, which comprises:
the connecting rod guide assembly is used for penetrating through the cylinder hole to be matched with a bolt hole of a connecting rod body in the piston connecting rod assembly;
the piston guide assembly is sleeved on the piston in the piston connecting rod assembly and pushes the piston into the cylinder hole;
and the piston pushing assembly is used for pushing the piston until the large end of the piston connecting rod assembly is attached to the crank throw.
The crankshaft rotating assembly comprises a sleeve structure and a rotating handle, the sleeve structure is used for being assembled with the small end of the crankshaft, the rotating handle is used for driving the crankshaft to rotate, and the rotating handle is fixed on the sleeve structure and can drive the sleeve structure to rotate together; optionally, the sleeve structure includes a sleeve, a key and a plate spring, an assembly groove for assembling with the small end of the crankshaft is arranged at the rear end of the sleeve, an installation plane is arranged on the outer surface of the cylinder wall of the sleeve, an installation opening is arranged on the cylinder wall of the sleeve, and the installation opening is correspondingly arranged in the area of the installation plane; the key includes with installation opening complex joint portion and protruding in the sleeve internal surface and be used for with bent axle tip on keyway complex bellying, the leaf spring laminating is in the surface of mounting plane and joint portion, then fixed leaf spring and key and telescopic section of thick bamboo wall, twist grip fixes on the sleeve.
Furthermore, the piston guide assembly is of a cylinder structure, a through hole extending along the axial direction is formed in the cylinder structure, the front end of the through hole is used for being sleeved on a piston of the piston connecting rod assembly, and the rear end of the through hole is used for guiding the piston pushing assembly; optionally, the through hole is a tapered hole, and the diameter of the through hole gradually increases from the front end to the rear end; optionally, the hole wall of the rear end of the through hole is symmetrically provided with a hole groove for avoiding the hand operation space.
Further, the piston pushing assembly comprises a handle, a supporting rod and a pressure head structure, the pressure head structure is used for being in contact with the piston and pushing the piston into the cylinder hole, the pressure head structure is fixed at the front end of the supporting rod, and the handle is fixed at the rear end of the supporting rod.
Further, the pressure head structure comprises a connecting column and a pressure head which is used for being in contact with the piston and pushing the piston into the cylinder hole, the pressure head is fixed at the front end of the connecting column, and the supporting rod is fixed at the rear end of the connecting column; optionally, the end surfaces of the front end and the rear end of the connecting column are respectively provided with a first groove and a second groove, the front end of the supporting rod is matched with the second groove, and the rear end of the pressure head is convexly provided with a pressure head protruding part matched with the first groove; optionally, a first through hole and a second through hole extending in the radial direction are respectively formed in the front end portion and the rear end portion of the connecting column, the first through hole is communicated with the first groove, the second through hole is communicated with the second groove, a third through hole extending in the radial direction is formed in the pressure head boss, a fourth through hole extending in the radial direction is formed in the supporting rod, the third through hole is communicated with the first through hole to form a first plug pin channel, and the fourth through hole is communicated with the second through hole to form a second plug pin channel; the outer surfaces of the front end part and the rear end part of the connecting column are annularly provided with a first annular groove for accommodating a first check ring and a second annular groove for accommodating a second check ring, the inlet and the outlet of the first through hole are both arranged on the first annular groove, and the inlet and the outlet of the second through hole are both arranged on the second annular groove; the pressure head is connected with the connecting column through a plug pin in the first plug pin channel and a first check ring arranged in the first annular groove; the supporting rod is connected with the connecting column through a bolt in the second bolt channel and a second retaining ring arranged in the second annular groove.
The invention also provides an assembly method of the assembly tool for the piston connecting rod assembly, the assembly tool for the piston connecting rod assembly is utilized, and the steps comprise:
(S1) the crankcase enters a station, the crankcase is horizontally placed, and the piston connecting rod assembly reaches a station state; the crankshaft is assembled in the crankcase, a key groove is formed in the small end of the crankshaft, and a connecting rod cover in the piston connecting rod assembly is disassembled;
(S2) adjusting the phase of the crankshaft by using a crankshaft rotating assembly, adjusting the crank to be on the axis of the cylinder hole of the cylinder 1, and assembling a connecting rod guide assembly into the cylinder hole;
(S3) fitting the piston portion of the piston and connecting rod assembly within the piston guide assembly such that the piston portion skirt is exposed from the piston guide assembly, with the piston rings compressed;
(S4) sleeving a connecting rod bolt hole on a connecting rod body in the piston connecting rod assembly on the connecting rod guide assembly;
(S5) pushing the piston guide assembly to push the piston skirt into the cylinder hole 1, so that the piston guide assembly is coaxial with the cylinder hole 1 on the crankcase, and the piston pushing assembly extends into the piston guide assembly to push the piston to move towards the cylinder hole 1 until the big end of the connecting rod body in the piston connecting rod assembly is attached to the crank throw;
(S6) retrieving the connecting rod guide assembly, assembling the connecting rod cap on the large end of the connecting rod body of the piston connecting rod assembly, completing 1 cylinder-in-cylinder;
(S7) repeating the steps (S1) -the step (S6) to complete the assembly of the piston connecting rod assemblies of the remaining cylinders.
Compared with the prior art, the invention has the following advantages:
the assembly tool and the assembly method for the piston connecting rod assembly have the advantages of simple structure, reliable performance and convenience in installation and use, not only can lead the piston connecting rod assembly into the cylinder hole stably, but also can realize mixed line production of engines with different cylinder numbers, so that the cost is saved, and the working efficiency is improved; only two operators are needed to assemble the piston connecting rod group on the crank case, and labor cost is saved.
Drawings
FIG. 1 is a schematic structural view of a crankshaft rotating assembly of the present invention;
FIG. 2 is a schematic view of the structure at A-A in FIG. 1;
FIG. 3 is a schematic view of the sleeve member of FIG. 1;
FIG. 4 is a schematic view of the sleeve member of FIG. 1 in another orientation;
FIG. 5 is a schematic view of the structure of the key of FIG. 1;
FIG. 6 is a schematic structural view of the leaf spring of FIG. 1;
FIG. 7 is a schematic view of the gasket of FIG. 1;
FIG. 8 is a schematic view of the structure of the twist grip of FIG. 1;
FIG. 9 is a schematic view of the construction of the link guide assembly of the present invention;
FIG. 10 is a schematic view of the mounting bracket of FIG. 9;
FIG. 11 is a schematic structural view of the slide bar of FIG. 9;
FIG. 12 is a schematic view of the connection block of FIG. 9;
FIG. 13 is a schematic structural view of the pin shaft of FIG. 9;
FIG. 14 is a schematic view of the piston guide assembly of the present invention;
FIG. 15 is a cross-sectional view taken at B-B of FIG. 14;
FIG. 16 is a schematic view of the piston drive assembly of the present invention;
FIG. 17 is a schematic view of the structure of FIG. 16 at C-C;
FIG. 18 is a schematic structural view of the indenter of FIG. 16;
FIG. 19 is a schematic structural view of the connecting column of FIG. 16;
FIG. 20 is a schematic view of the support rod of FIG. 16;
FIG. 21 is a schematic view of the shield of FIG. 16;
FIG. 22 is a schematic view of the crankcase configuration;
FIG. 23 is a structural schematic view of a state of the piston and connecting rod assembly;
FIGS. 24-35 are schematic views of the assembly process of the piston and connecting rod assembly of the present invention.
In the figure:
1-crankshaft rotating assembly, 11-sleeve structure, 111-sleeve, 1112-assembly groove, 1113-mounting plane, 1114-mounting opening, 1115-connecting shaft, 1116-first threaded hole, 112-key, 1121-clamping part, 1122-projection, 113-plate spring, 114-gasket, 1141-connecting hole, 13-turning handle, 131-first mounting part, 132-handle operating part and 133-first mounting hole;
2-connecting rod guide component, 21-first handle, 22-mounting bracket, 221-bracket mounting block, 222-bracket operating rod, 23-sliding rod, 231-second cambered surface, 232-first sliding rod, 233-second sliding rod, 24-connecting block, 241-first cambered surface, 25-pin shaft and 26-first guard plate;
3-piston guide assembly, 31-hole groove, 33-through hole;
4-a piston pushing assembly, 41-a handle, 42-a second guard plate, 43-a support rod, 431-a fourth through hole, 45-a connection column, 451-a first groove, 452-a second groove, 453-a first through hole, 454-a second through hole, 455-a first annular groove, 456-a second annular groove, 46-a pressure head, 461-a pressure head lug boss, 4611-a third through hole, 47-a first retainer ring and 48-a second retainer ring;
a-the small end of the crankshaft; a 1-keyway; b-cylinder hole, c-crank throw, d-piston connecting rod assembly, d 1-connecting rod body, d 2-piston and f-connecting rod cover.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
Referring to fig. 1 to 21, the present embodiment discloses a piston connecting rod assembly assembling tool, which includes:
a connecting rod guide assembly 2 for fitting through the cylinder hole b with a bolt hole of a connecting rod body d1 in the piston connecting rod assembly d; the connecting rod guide assembly 2 comprises the connecting rod guide assembly 2;
the piston guide assembly 3 is used for sleeving the piston d2 in the piston connecting rod assembly d and pushing the piston d2 into the cylinder hole b;
the piston pushing assembly 4 is used for pushing the piston d2 until the big end of the piston connecting rod assembly d is attached to the crank throw c.
Referring to fig. 1 to 8, the crankshaft rotating assembly 1 is further included for adjusting the phase of the crankshaft, the crankshaft rotating assembly 1 includes a sleeve structure 11 for being assembled with the small end a of the crankshaft and a rotating handle 13 for driving the crankshaft to rotate, the rotating handle 13 is fixed on the sleeve structure 11, and the rotating handle 13 can drive the sleeve structure to rotate together.
Further, the sleeve structure 11 includes a sleeve 111, a key 112 and a plate spring 113, the rear end of the sleeve 111 is provided with an assembling groove 1112 for assembling with the crankshaft small end a, the outer surface of the cylinder wall of the sleeve 111 is provided with an installing plane 1113, the cylinder wall of the sleeve 111 is provided with an installing opening 1114, and the installing opening 1114 is correspondingly arranged in the area of the installing plane 1113; the key 112 includes a clamping portion 1121 matching with the mounting opening 1114 and a protrusion portion 1122 protruding from the inner surface of the sleeve 111 and matching with a key groove a1 on the small end a of the crankshaft, the plate spring 113 is attached to the outer surface of the mounting plane 1113 and the clamping portion 1121, then the plate spring 113 is fixed with the key 112 and the cylinder wall of the sleeve 111, and the rotating handle 13 is fixed on the sleeve 111. The plate spring 113 is connected to the key 112 by a first bolt, and the plate spring 113 is connected to the cylindrical wall of the sleeve 111 by a second bolt.
In this embodiment, the sleeve structure 11 further includes a spacer 114 for preventing the rotating handle 13 from sliding off the connecting shaft 1115, a connecting hole 1141 is formed in the spacer 114, the connecting shaft 1115 is protruded from an end surface of the rear end of the sleeve 111, a first threaded hole 1116 axially extending along the assembling groove 1112 is formed in a rear end portion of the connecting shaft 1115, the rotating handle 13 is sleeved on the connecting shaft 1115, the connecting hole 1141 is aligned with the first threaded hole 1116, the spacer 114 is attached to the rear end surface of the connecting shaft 1115 and the rotating handle 13, and then the rotating handle 13 is fixed to the sleeve 111 through a bolt. The rotating handle 13 is provided with a first mounting hole 133 which is matched with the connecting shaft 1115, wherein the connecting shaft 1115 is square column shaped, and the first mounting hole 133 is a square hole which is matched with the connecting shaft 1115 in shape. In some embodiments, the shapes of the connecting shaft 1115 and the first mounting hole 133 are other shapes, and are not limited thereto. The rotating handle 13 comprises a first mounting part 131 which is sleeved on the connecting shaft 1115 and a handle operating part 132 which is used for facilitating operation, and the first mounting part is connected with the handle operating part 132; the first mounting hole 133 is provided on the first mounting portion 131. The first mounting portion and the handle operating portion 132 are an integral structure or a separate structure.
Referring to fig. 9 to 13, the link guide assembly 2 includes a sliding rod structure passing through the cylinder hole b and capable of sliding in the cylinder hole b, and a pin 25 for engaging with a bolt hole of a large end of the link body d1 is provided at a front end of the sliding rod structure.
In this embodiment, the slide bar structure includes a mounting bracket 22 and a slide bar 23, the slide bar 23 includes a first slide bar 232 and a second slide bar 233 which are arranged in sequence from top to bottom and parallel to each other, the pin 25 includes a first pin 251 and a second pin 252 which are respectively matched with two bolt holes on a connecting rod body d1, the first pin 251 is disposed at the front end of the first slide bar 232, the second pin 252 is disposed at the front end of the second slide bar 233, the rear ends of the first slide bar 232 and the second slide bar 233 are fixed at the front end of the mounting bracket 22, and the upper end surface of the first slide bar 232 and the lower end surface of the second slide bar 233 can abut against the inner wall of the cylinder hole b and can slide on the inner wall of the cylinder hole b. The upper end surface of the first sliding rod 232 and the lower end surface of the second sliding rod 233 are both set to be a second arc surface 231 which is adaptive to the radian of the inner wall of the cylinder hole b.
In this embodiment, the slide rod structure further includes a connecting block 24, a rear end of the connecting block 24 is disposed on the mounting bracket 22 and between the first slide rod 232 and the second slide rod 233, and an end surface of a front end of the connecting block 24 is configured to abut against the crank throw c and is disposed as a first arc surface 241 adapted to a surface radian of the crank throw c.
In this embodiment, the mounting bracket 22 includes a bracket mounting block 221 and a bracket operating rod 222, the front end of the bracket mounting block 221 is connected with the sliding rod 23 and the connecting block 24, and the rear end of the bracket mounting block 221 is connected with the front end of the bracket operating rod 222.
In the present embodiment, the rear end of the rack operating lever 222 is provided with a first handle 21. The first handle 21 is connected with the bracket operating rod 222 through a bolt; the sliding rod 23 is connected with the bracket mounting block 221 through a bolt; the connecting block 24 is connected with the bracket mounting block 221 through a bolt; the pin shaft 25 and the sliding rod 23 are fixed through a jackscrew.
In this embodiment, the middle of the bracket operating rod 222 is sleeved with the first guard plate 26 for suspending the link guide assembly 2. Mainly used for hanging the connecting rod guide assembly 2, the connecting rod guide assembly 2 is hung on the U-shaped bracket through the first protection plate 26, namely, the front surface of the first protection plate 26 is supported and hung through the end surface of the U-shaped bracket. The operator can take the product conveniently. The first guard plate 26 is circular, and in some embodiments, the first guard plate 26 has other shapes, but not limited thereto.
Referring to fig. 14 to 15, the piston guiding assembly 3 is a cylindrical structure, a through hole 33 extending along the axial direction is formed in the cylindrical structure, the front end of the through hole 33 is used for being sleeved on the piston of the piston connecting rod assembly d, and the rear end of the through hole 33 is used for guiding the piston pushing assembly. The hole wall of the rear end of the through hole 33 is symmetrically provided with hole grooves 31 for avoiding the hand operation space. When the piston is placed in the piston guide assembly, the piston can be clamped on the upper part of the piston guide assembly due to the elasticity of the piston ring and can incline, the top surface of the piston needs to be pressed by an operator with a hand to adjust, and the hole groove 31 is arranged to avoid the operation space of the hand and is pressed by the thumbs of two hands generally.
In the present embodiment, the through hole 33 is a tapered hole, and the diameter of the through hole 33 gradually increases from the front end to the rear end.
Referring to fig. 16 to 21, the piston push-in assembly 4 includes a handle 41, a support rod 43, and a ram structure for contacting the piston and pushing the piston into the cylinder hole, the ram structure being fixed to a front end of the support rod 43, and the handle 41 being fixed to a rear end of the support rod 43.
In the present embodiment, the ram structure includes a connecting column 45 and a ram 46 for contacting the piston and pushing the piston into the cylinder hole, the ram 46 is fixed to the front end of the connecting column 45, and the support rod 43 is fixed to the rear end of the connecting column 45.
In this embodiment, the front and rear end surfaces of the connecting post 45 are respectively provided with a first groove 451 and a second groove 452, the front end of the supporting rod 43 is matched with the second groove 452, and the rear end of the pressing head 46 is convexly provided with a pressing head protrusion 461 matched with the first groove 451.
In this embodiment, the front and rear end portions of the connecting column 45 are respectively provided with a first through hole 453 and a second through hole 454 extending in the radial direction, the first through hole 453 is communicated with the first groove 451, the second through hole 454 is communicated with the second groove 452, the ram boss 461 is provided with a third through hole 4611 extending in the radial direction, the support rod 43 is provided with a fourth through hole 431 extending in the radial direction, the third through hole 4611 is communicated with the first through hole 453 to form a first plug pin channel, and the fourth through hole 431 is communicated with the second through hole 454 to form a second plug pin channel; the outer surface of the front end and the rear end of the connecting column 45 are annularly provided with a first annular groove 455 for accommodating the first retainer ring 47 and a second annular groove 456 for accommodating the second retainer ring 48, the inlet and the outlet of the first through hole 453 are both arranged on the first annular groove 455, and the inlet and the outlet of the second through hole 454 are both arranged on the second annular groove 456; the pressure head 46 is connected with the connecting column 45 through a plug into the first plug channel and a first retainer ring arranged in the first annular groove 455; the support rod 43 is connected to the connecting post 45 by a pin inserted into the second pin channel and a second stop disposed in the second annular groove 456.
In this embodiment, the piston pushing assembly 4 further includes a second guard plate 42 for limiting the pushing depth of the ram structure, and the guard plate 42 is sleeved on the middle portion of the support rod 43 and located between the ram structure and the handle 41. The front end face of the second guard plate 42 of the piston pushing-in assembly 4 can abut against the rear end face of the piston guide assembly 3 in the pushing-in process so as to limit the pushing-in depth of the pressure head structure.
Referring to fig. 22 to 35, the present embodiment further discloses an assembling method of an assembling tool for a piston connecting rod assembly, where the assembling tool for a piston connecting rod assembly includes:
(S1) the crankcase enters a station, the crankcase is horizontally placed, and the piston connecting rod assembly d reaches a station state; wherein, the crankshaft is assembled in the crankcase, the small end a of the crankshaft is provided with a key slot a1, and the connecting rod cover f in the piston connecting rod assembly d is disassembled; this step is illustrated in fig. 22 and 23.
(S2) adjusting the crankshaft phase with the crankshaft rotation assembly 1, and fitting the connecting rod guide assembly 2 into the cylinder hole b after the crank throw c is adjusted to the axis of the cylinder hole b of 1 cylinder; referring to fig. 24 and 26, the crankshaft rotation tool is assembled to the small end of the crankshaft such that the key 112 is inserted into the key groove a1 of the small end a of the crankshaft, at which time the crankshaft can be rotated; rotating the crankshaft to make the 1 cylinder crank throw approximately on the 1 cylinder hole axis; the connecting rod guide assembly is fitted through the 1-cylinder bell crank c into the 1-cylinder bore b.
(S3) partially fitting the piston d2 in the piston and connecting rod assembly d in the piston guide assembly 3, so that part of the skirt part of the piston d2 is exposed out of the piston guide assembly 3, and the piston ring is compressed; this step is illustrated in fig. 27 and 28.
(S4) sleeving a connecting rod bolt hole on a connecting rod body d1 in the piston connecting rod assembly d on the connecting rod guide assembly 2; this step is illustrated in fig. 29 and 30.
(S5) pushing the piston guide assembly d to push the skirt part of the piston d2 into the cylinder hole b 1, so that the piston guide assembly d is coaxial with the cylinder hole b 1 on the crankcase, and the piston pushing assembly 4 extends into the pushing piston guide assembly 3 to push the piston d2 to move in the cylinder hole b 1 until the large end of the connecting rod body d1 in the piston connecting rod assembly d is attached to the crank throw c; this step is illustrated in fig. 31 and 33.
(S6) retrieving the link guide assembly 2, fitting the link cap f on the large end of the link body d1 of the piston link assembly d, completing 1 cylinder-in-cylinder; this step is illustrated in fig. 34 and 35.
(S7) repeating the steps (S1) -the step (S6) to complete the assembly of the piston connecting rod assemblies d of the remaining cylinders.
A, B operators are involved in assembling the piston-connecting-rod assembly. The crankcase enters a station in a horizontal state (the crankshaft is assembled in place); an operator adjusts the phase position of a crankshaft by using a crankshaft rotating tool, and when the crank throw of the cylinder 1 is positioned on the axis of the cylinder hole of the cylinder 1 and has the farthest distance, a connecting rod guide tool is assembled into the cylinder hole of the cylinder 1; b, an operator puts the 1 cylinder piston into a piston guide tool; b, sleeving the connecting rod on a connecting rod guide tool by an operator (in the process, the operator holds the connecting rod guide tool by hands so as not to fall off); b, the operator pushes the piston skirt into the cylinder hole, so that the piston guide tool is coaxial with the cylinder hole in the crankcase, and then the piston push tool is used for assembling the piston connecting rod assembly in place (in the process A, the operator holds the connecting rod guide tool by hand so that the connecting rod guide tool does not fall off); an operator takes back the connecting rod guide tool and assembles the 1-cylinder connecting rod cap in place, and at the moment, the 1-cylinder entering is completed; and repeating the steps to complete the assembly of the piston connecting rod assembly in other cylinders.
The assembly tool and the assembly method for the piston connecting rod assembly have the advantages of simple structure, reliable performance and convenience in installation and use, not only can lead the piston connecting rod assembly into the cylinder hole stably, but also can realize mixed line production of engines with different cylinder numbers, so that the cost is saved, and the working efficiency is improved; only two operators are needed to assemble the piston connecting rod group on the crank case, and labor cost is saved.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (10)
1. The connecting rod guide assembly is characterized by comprising a sliding rod structure which is used for penetrating through a cylinder hole (b) and can slide in the cylinder hole (b), wherein the front end of the sliding rod structure is provided with a pin shaft (25) which is used for being matched with a bolt hole of the large end of a connecting rod body (d 1).
2. The connecting rod guide assembly according to claim 1, wherein the sliding rod structure comprises a mounting bracket (22) and a sliding rod (23), the sliding rod (23) comprises a first sliding rod (232) and a second sliding rod (233) which are arranged in sequence from top to bottom and are parallel to each other, the pin (25) comprises a first pin (251) and a second pin (252) which are respectively matched with two bolt holes on the connecting rod body (d1), the first pin (251) is arranged at the front end of the first sliding rod (232), the second pin (252) is arranged at the front end of the second sliding rod (233), and the rear ends of the first sliding rod (232) and the second sliding rod (233) are fixed at the front end of the mounting bracket (22); optionally, the upper end surface of the first slide bar (232) and the lower end surface of the second slide bar (233) can abut against and slide on the inner wall of the cylinder hole (b), and the upper end surface of the first slide bar (232) and the lower end surface of the second slide bar (233) are both provided with a second arc surface (231) which is adaptive to the radian of the inner wall of the cylinder hole (b).
3. The connecting rod guide assembly according to claim 1, wherein the slide rod structure further comprises a connecting block (24), a rear end of the connecting block (24) is disposed on the mounting bracket (22) and between the first slide rod (232) and the second slide rod (233), and an end surface of a front end of the connecting block (24) is used for abutting against the crank throw (c) and is disposed to be a first arc surface (241) corresponding to a surface radian of the crank throw (c).
4. The connecting rod guide assembly according to claim 2 or 3, wherein the mounting bracket (22) comprises a bracket mounting block (221) and a bracket operating rod (222), a sliding rod (23) and a connecting block (24) are connected to the front end of the bracket mounting block (221), and the rear end of the bracket mounting block (221) is connected to the front end of the bracket operating rod (222); optionally, a first handle (21) is arranged at the rear end of the support operating rod (222).
5. The utility model provides a piston link assembly fixture which characterized in that includes:
the connecting rod guide assembly (2) as defined in any one of claims 1 to 4, for fitting through a cylinder bore (b) with a bolt hole of a connecting rod body (d1) in a piston connecting rod assembly (d);
the piston guide assembly (3) is used for sleeving a piston (d2) in the piston connecting rod assembly (d) and pushing the piston (d2) into the cylinder hole (b);
the piston pushing assembly (4) is used for pushing the piston (d2) until the big end of the piston connecting rod assembly (d) is attached to the crank throw (c).
6. The assembly tooling of the piston and connecting rod assembly according to claim 5, further comprising a crankshaft rotating assembly (1) for adjusting the phase of the crankshaft, wherein the crankshaft rotating assembly (1) comprises a sleeve structure (11) for being assembled with the small end (a) of the crankshaft and a rotating handle (13) for driving the crankshaft to rotate, the rotating handle (13) is fixed on the sleeve structure (11) and the rotating handle (13) can drive the sleeve structure to rotate together; optionally, the sleeve structure (11) includes a sleeve (111), a key (112) and a plate spring (113), an assembly groove (1112) for assembling with the crankshaft small end (a) is disposed at the rear end of the sleeve (111), an installation plane (1113) is disposed on the outer surface of the cylinder wall of the sleeve (111), an installation opening (1114) is disposed on the cylinder wall of the sleeve (111), and the installation opening (1114) is correspondingly disposed in the region of the installation plane (1113); the key (112) comprises a clamping portion (1121) matched with the mounting opening (1114) and a protruding portion (1122) protruding from the inner surface of the sleeve (111) and matched with a key groove (a1) in the small end (a) of the crankshaft, the plate spring (113) is attached to the outer surfaces of the mounting plane (1113) and the clamping portion (1121), then the plate spring (113) is fixed with the key (112) and the cylinder wall of the sleeve (111), and the rotating handle (13) is fixed on the sleeve (111).
7. The assembly tooling of the piston and connecting rod assembly as claimed in claim 5 or 6, wherein the piston guide assembly (3) is of a cylindrical structure, a through hole (33) extending along the axial direction is formed in the cylindrical structure, the front end of the through hole (33) is used for being sleeved on a piston of the piston and connecting rod assembly (d), and the rear end of the through hole (33) is used for guiding the piston pushing assembly; optionally, the through hole (33) is a tapered hole, and the diameter of the through hole (33) gradually increases from the front end to the rear end; optionally, the hole wall of the rear end of the through hole (33) is symmetrically provided with a hole groove (31) for avoiding the hand operation space.
8. The assembly tooling of the piston and connecting rod assembly as recited in claim 7, characterized in that the piston push-in assembly (4) comprises a handle (41), a support rod (43) and a ram structure for contacting the piston and pushing the piston into the cylinder bore, the ram structure being fixed to the front end of the support rod (43), the handle (41) being fixed to the rear end of the support rod (43).
9. The assembly tooling of the piston and connecting rod assembly as recited in claim 6, characterized in that the ram structure comprises a connecting column (45) and a ram (46) for contacting the piston and pushing the piston into the cylinder hole, the ram (46) is fixed at the front end of the connecting column (45), and the support rod (43) is fixed at the rear end of the connecting column (45); optionally, the end surfaces of the front end and the rear end of the connecting column (45) are respectively provided with a first groove (451) and a second groove (452), the front end of the supporting rod (43) is matched with the second groove (452), and the rear end of the pressure head (46) is convexly provided with a pressure head protrusion part (461) matched with the first groove (451); optionally, a first through hole (453) and a second through hole (454) extending in the radial direction are respectively formed in the front end portion and the rear end portion of the connecting column (45), the first through hole (453) is communicated with the first groove (451), the second through hole (454) is communicated with the second groove (452), a third through hole (4611) extending in the radial direction is formed in the pressure head boss (461), a fourth through hole (431) extending in the radial direction is formed in the supporting rod (43), the third through hole (4611) is communicated with the first through hole (453) to form a first plug pin channel, and the fourth through hole (431) is communicated with the second through hole (454) to form a second plug pin channel; the outer surfaces of the front end part and the rear end part of the connecting column (45) are annularly provided with a first annular groove (455) for accommodating a first retainer ring (47) and a second annular groove (456) for accommodating a second retainer ring (48), the inlet and the outlet of the first through hole (453) are both arranged on the first annular groove (455), and the inlet and the outlet of the second through hole (454) are both arranged on the second annular groove (456); the pressure head (46) is connected with the connecting column (45) through a plug pin which is inserted into the first plug pin channel and a first retainer ring which is arranged in the first annular groove (455); the supporting rod (43) is connected with the connecting column (45) through a bolt in the second bolt channel and a second retainer arranged in the second annular groove (456).
10. An assembling method of a piston connecting rod assembly assembling tool, which utilizes the piston connecting rod assembly assembling tool as claimed in any one of claims 5 to 9, and is characterized by comprising the following steps:
(S1) the crankcase enters a station, the crankcase is horizontally placed, and the piston connecting rod assembly (d) reaches a station state; wherein, the crankshaft is assembled in the crankcase, the small end (a) of the crankshaft is provided with a key slot (a1), and a connecting rod cover (f) in the piston connecting rod component (d) is disassembled;
(S2) adjusting the crankshaft phase with the crankshaft rotating assembly (1), and fitting the connecting rod guide assembly (2) into the cylinder hole (b) after the crank throw (c) is adjusted to the axis of the cylinder hole (b) of 1 cylinder;
(S3) partially fitting the piston (d2) in the piston and connecting rod assembly (d) into the piston guide assembly (3) so that part of the skirt of the piston (d2) is exposed from the piston guide assembly (3), at which time the piston ring is compressed;
(S4) sleeving a connecting rod bolt hole on a connecting rod body (d1) in the piston connecting rod component (d) on the connecting rod guide component (2);
(S5) pushing the piston guide assembly (d) to push the skirt part of the piston (d2) into the cylinder hole (b) of the cylinder 1, so that the piston guide assembly (d) is coaxial with the cylinder hole (b) of the cylinder 1 on the crankcase, and the piston push assembly (4) extends into the push piston guide assembly (3) to push the piston (d2) to move towards the cylinder hole (b) of the cylinder 1 until the big end of the connecting rod body (d1) in the piston connecting rod assembly (d) is attached to the crank throw (c);
(S6) retrieving the link guide assembly (2), assembling the link cap (f) on the large end of the link body (d1) of the piston link assembly (d), completing 1 cylinder-in-cylinder;
(S7) repeating the steps (S1) -step (S6) to complete the assembly of the piston connecting rod assembly (d) of the remaining cylinders.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011054154.0A CN112223195A (en) | 2020-09-30 | 2020-09-30 | Connecting rod guide assembly, piston connecting rod assembly assembling tool and assembling method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011054154.0A CN112223195A (en) | 2020-09-30 | 2020-09-30 | Connecting rod guide assembly, piston connecting rod assembly assembling tool and assembling method thereof |
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| CN112223195A true CN112223195A (en) | 2021-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011054154.0A Pending CN112223195A (en) | 2020-09-30 | 2020-09-30 | Connecting rod guide assembly, piston connecting rod assembly assembling tool and assembling method thereof |
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| CN (1) | CN112223195A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113681510A (en) * | 2021-09-10 | 2021-11-23 | 潍柴动力股份有限公司 | Connecting rod cap assembly and disassembly component |
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