CN220278971U - Quick and accurate sleeve changing device for production of engine connecting rod - Google Patents

Abstract

The utility model belongs to the technical field of engine connecting rod processing equipment, and particularly relates to a quick and accurate sleeve changing device for engine connecting rod production, which comprises a workbench in a shape like a Chinese character 'ji', wherein a large positioning rod is arranged at the rear side above the workbench, a sleeve changing hole is formed in the front side above the workbench, a large head positioning mechanism is arranged at the corner of the workbench close to one side of the large positioning rod, a small head positioning mechanism is arranged at the corner of the workbench close to one side of the sleeve changing hole, an end face abutting mechanism is arranged at one side of the workbench between the large positioning rod and the sleeve changing hole, and a sleeve changing auxiliary mechanism is arranged above the workbench corresponding to the sleeve changing hole. The utility model has reasonable design, simple structure and convenient processing, can effectively finish stable clamping and positioning of the engine connecting rod, realizes the limit of the moving direction of the bushing to a certain extent, prevents the bushing from shifting, improves the working process, reduces the danger and meets the use requirement.

Description

Quick and accurate sleeve changing device for production of engine connecting rod

Technical Field

The utility model belongs to the technical field of engine connecting rod processing equipment, and particularly relates to a quick and accurate sleeve changing device for engine connecting rod production.

Background

The connecting rod is a component for connecting the piston and the crankshaft, transmitting the acting force applied by the piston to the crankshaft, and converting the reciprocating motion of the piston into the rotary motion of the crankshaft. The connecting rod body is generally composed of three parts, and the part connected with the piston pin is called a connecting rod small head; the part connected with the crankshaft is called a connecting rod big end, and the rod part connecting the small end and the big end is called a connecting rod body. The small end of the connecting rod is mostly of a thin-wall circular ring structure, and in order to reduce abrasion with the piston pin, a thin-wall bronze bushing is pressed in a small end hole. Small heads and bushings are drilled or milled with grooves to allow splashed oil droplets to enter the mating surfaces of the lubrication bushing and piston pin. The connecting rod body is a long rod member, and is also stressed in operation, and the rod body must have sufficient rigidity to prevent bending deformation. In order to avoid stress concentration, the connection parts of the connecting rod body and the small end and the big end are in large arc smooth transition.

At present, in order to effectively improve the service life of an engine connecting rod and mechanical workpieces under the matched use, the connecting rod is generally required to be matched with a bushing, the bushing is arranged in a small hole of the connecting rod, the connecting rod is fixed by a positioning clamp, then the bushing is placed in the small hole of the connecting rod, and then the bushing is pressed into the small hole of the connecting rod by matching with hydraulic equipment to finish the placement; correspondingly, when the bushing in the small end of the connecting rod is replaced, the connecting rod is also positioned and clamped, a new bushing is placed above the small hole of the connecting rod and corresponds to the bushing to be replaced, and then the bushing is pressed into the small hole of the connecting rod by matching with hydraulic equipment, so that the replacement of the bushing is completed, and the workpiece is ensured to have good use functionality.

However, in the existing bushing changing process, the bushing is placed above the small hole of the connecting rod and corresponds to the old bushing, manual auxiliary adjustment is needed for alignment between the outer wall of the bushing and the inner wall of the connecting rod, then the hydraulic equipment is controlled to gradually descend until the bushing position is accurate, the bushing is manually withdrawn and controlled to be pushed down to move and complete corresponding replacement, the process has high danger, and particularly safety accidents are easy to occur in the process of manually auxiliary adjustment of the bushing position, meanwhile, the labor intensity of people is high, time and labor are wasted, the condition that the position of the manually adjusted bushing is inaccurate exists, the working process of changing the bushing is influenced, and the use requirement cannot be met well.

Disclosure of Invention

Aiming at the technical problems in the process of changing the sleeve of the engine connecting rod, the utility model provides the quick and accurate sleeve changing device for producing the engine connecting rod, which has the advantages of reasonable design, simple structure, convenient processing, capability of effectively completing stable clamping and positioning of the engine connecting rod, reducing the possibility of deviation, and meanwhile, realizing the limit of the moving direction of the bushing to a certain extent, preventing the deviation, improving the working process, reducing the danger and fully meeting the production, processing and use requirements.

In order to achieve the above purpose, the technical scheme adopted by the utility model is that the quick and accurate sleeve changing device for producing the engine connecting rod comprises a workbench which is in a shape like a Chinese character 'ji', wherein a large positioning rod is arranged at the rear side above the workbench, a sleeve changing hole is formed in the front side above the workbench, a large head positioning mechanism is arranged at the corner of the workbench which is close to one side of the large positioning rod, a small head positioning mechanism is arranged at the corner of the workbench which is close to one side of the sleeve changing hole, an end face abutting mechanism is arranged at one side of the workbench which is positioned between the large positioning rod and the sleeve changing hole, a sleeve changing auxiliary mechanism is arranged above the workbench which corresponds to the sleeve changing hole, the sleeve changing auxiliary mechanism comprises upright rods, a carrier plate is arranged at the upper ends of the two upright rods, an adjusting rod is arranged in the carrier plate, a pressure plate is arranged at the upper end of the adjusting rod, a connecting sleeve is arranged at the lower end of the adjusting rod, a connecting sleeve which is in a concave-shaped cross section is arranged at the lower end, a bottom plate is arranged at the lower end of the adjusting rod, an end of the connecting rod, an end abutting mechanism is arranged at one side, an end face of the connecting rod which is positioned between the big positioning rod and the connecting rod, an annular groove is arranged at the lower end of the connecting rod, a ring groove is correspondingly arranged between the connecting rod and the connecting rod, and the ring groove is arranged.

Preferably, the small-end positioning mechanism comprises a vertical plate, a shell is arranged on one side of the vertical plate, a guide block is arranged at the geometric center of one side in the shell, one side end surface of the guide block is of an inclined design, an inclined wedge block matched with the guide block is movably arranged in the shell, a rotating screw rod is arranged in the vertical plate, the end part of the rotating screw rod is connected with the inclined wedge block, and a limiting reset mechanism which limits the moving direction of the guide block and is convenient for resetting the guide block is arranged in the shell.

Preferably, the end surface abutting mechanism comprises a mounting plate, an air cylinder is arranged at the lower end of the mounting plate, a mounting seat is arranged on a workbench on one side of the mounting plate, a connecting plate is arranged on the outer side of the mounting seat, a rotating rod is arranged on the other side of the connecting plate, one side end part of the rotating rod is hinged to the output end of the air cylinder, and an abutting block which is in concave design is arranged below the other side end part.

Preferably, the big end positioning mechanism comprises an installing table in an L-shaped design, and an adjustable tight supporting screw rod is arranged at the geometric center of the installing table.

Compared with the prior art, the utility model has the advantages and positive effects that,

1. according to the quick and accurate sleeve changing device for the production of the engine connecting rod, through the mutual matching of the big end positioning mechanism and the small end positioning mechanism, a placed workpiece has good stability in the longitudinal direction, the possibility of shaking or jumping is reduced, meanwhile, the small end positioning mechanism has the function of self-adaptively adjusting the clamping force, free adjustment is convenient according to different use requirements, the possibility of damage of equipment is reduced, the use functionality of the equipment is greatly improved, and the effective proceeding of subsequent production and processing work is ensured; the end face abutting mechanism replaces manual work to finish adjusting and clamping of the end face of the workpiece, so that time and labor are saved, the working process is effectively improved, the possibility of jumping in the vertical direction is reduced, the stability is ensured, meanwhile, the large positioning rod can be matched to finish accurate positioning of the position of the connecting rod workpiece, the shifting is prevented, and the use requirement is met; through the sleeve changing auxiliary mechanism, the limit of the position of the bushing can be completed instead of manual work, the accuracy of the bushing travelling direction in the sleeve changing working process is ensured, the working process is improved, and the use functionality is strong; this device reasonable in design, simple structure, processing convenience just can effectively accomplish the stable centre gripping location to the engine connecting rod, reduces its possibility that takes place the skew, simultaneously, realizes to a certain extent that it takes place the skew to the spacing of bush direction of movement, prevents that it from taking place the skew, improves work progress, reduces the danger, fully satisfies production and processing user demand.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort to a person skilled in the art.

FIG. 1 is a schematic diagram of a quick and accurate bushing changing device for producing an engine connecting rod;

FIG. 2 is a schematic view of an alternative view of a quick and accurate bushing apparatus for use in the production of engine connecting rods;

FIG. 3 is a top view of a quick and accurate bushing changer for producing engine connecting rods;

FIG. 4 is a cross-sectional elevation view of a portion of the internal structure of the change over assist mechanism;

FIG. 5 is an enlarged schematic view of a portion of the structure shown at A in FIG. 4;

FIG. 6 is a cross-sectional top view of the internal structure of the small head positioning mechanism;

in the above figures, 1, a workbench; 1a, sleeve changing holes; 2. a large positioning rod; 3. a big head positioning mechanism; 31. a mounting table; 32. tightly supporting the screw rod; 4. a small head positioning mechanism; 41. a vertical plate; 42. a housing; 43. a guide block; 44. wedge block; 45. rotating the screw; 46. a limit reset mechanism; 5. an end face abutting mechanism; 51. a mounting plate; 52. a cylinder; 53. a mounting base; 54. a connecting plate; 55. a rotating lever; 56. abutting blocks; 6. a sleeve changing auxiliary mechanism; 61. a vertical rod; 62. a carrier plate; 63. an adjusting rod; 631. a pressure plate; 632. connecting sleeves; 64. a connecting disc; 641. a ring groove; 65. a bottom plate; 66. a moving rod; 67. a carrier plate; 68. compressing the spring.

Detailed Description

In order that the above objects, features and advantages of the utility model will be more clearly understood, a further description of the utility model will be rendered by reference to the appended drawings and examples. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, however, the present utility model may be practiced otherwise than as described herein, and therefore the present utility model is not limited to the specific embodiments of the disclosure that follow.

As shown in fig. 1, 2, 3, 4, 5 and 6, the quick and accurate sleeve changing device for producing the engine connecting rod comprises a workbench 1 which is designed in a shape of a Chinese character 'ji', provides convenience for setting up equipment parts of each device, ensures the stability of the set up equipment parts to a certain extent, reduces the possibility of offset of the equipment parts, and ensures the effective performance of production and processing work; the rear side above the workbench 1 is provided with a large positioning rod 2 which limits the placement position of the connecting rod, ensures the smooth progress of batch workpiece processing work and meets the use requirement; the front side above the workbench 1 is provided with a sleeve replacing hole 1a, so that a connecting rod sleeve to be replaced can effectively fall down when being ejected out, people can collect and process the connecting rod sleeve conveniently, and the working process is improved; the corner of the workbench 1 near one side of the large positioning rod 2 is provided with a big head positioning mechanism 3, and the corner of the workbench 1 near one side of the sleeve replacing hole is provided with a small head positioning mechanism 4, namely, the big head positioning mechanism 3 corresponds to the big hole of the connecting rod, the small head positioning mechanism 4 corresponds to the small hole of the connecting rod, the devices and the devices are used without interference, the respective using functions are fully exerted, and meanwhile, the two devices and the device are mutually matched, so that the placed workpiece has good stability in the longitudinal direction, the possibility of shaking is reduced, and the stability is ensured; an end face abutting mechanism 5 is arranged on one side of the workbench 1 between the large positioning rod 2 and the sleeve changing hole 1a, so that the abutting of the connecting rod in the vertical direction is realized, the possibility of jumping in the vertical direction is reduced, and the stability is ensured; in order to effectively replace the manual work to accomplish the change to connecting rod bush work, fully promote work progress, be provided with the auxiliary mechanism that changes the cover 6 above the workstation 1 corresponding with change the cover hole 1a, the auxiliary mechanism that changes the cover 6 includes pole setting 61, and two pole setting 61 upper ends are provided with carrier plate 62, are provided with in the carrier plate 62 and adjust pole 63, and it can freely go up and down relative to carrier plate 62, and need further to explain is: the joint between the adjusting rod 63 and the carrier plate 62 is provided with a component for limiting the lifting direction of the adjusting rod 63, for example, a strip-shaped groove is formed in the periphery of the adjusting rod 63, a strip-shaped plate matched with the strip-shaped groove is arranged on the inner side of the corresponding carrier plate 62, the movement lifting direction of the adjusting rod 63 is limited by utilizing the cooperation between the adjusting rod 63 and the carrier plate, convenience is provided for the development of subsequent production and processing work, and the working process is improved; the upper end of the adjusting rod 63 is provided with a pressure plate 631, which provides convenience for the hydraulic equipment to act on the sleeve changing auxiliary mechanism 6 and ensures the effective output of power, thereby completing the corresponding sleeve changing work; the lower extreme of adjusting pole 63 is provided with adapter sleeve 632, the lower extreme of adapter sleeve 632 is provided with the connection pad 64 that the cross-section personally submits concave shape design, connection pad 64 and adapter sleeve 632 are fixed connection mutually, ensure power take off's stability and effectiveness, the lower extreme of connection pad 64 is provided with bottom plate 65, it is to play good supporting role to adjust pole 63 and compression spring 68, make it possess reset function simultaneously, provide prerequisite for the use of follow-up production and processing work, annular 641 has been seted up to the lower extreme in the connection pad 64, run through in the connection pad 64 corresponding to annular 641 and be provided with movable rod 66, four movable rods 66 equipartitions are set up in connection pad 64, the periphery of movable rod 66 is provided with carrier plate 67, the movable rod 66 periphery cover that is located between carrier plate 67 and the annular 641 is equipped with compression spring 68, specifically described as: after the connecting rod is placed, the small hole of the connecting rod, particularly the outer wall of the bushing is flush with the inner side wall of the sleeve replacing hole 1a, the adjusting rod 63 is lifted manually, a new bushing is placed at the position to be replaced, namely the position above the small hole of the connecting rod, the position of the bushing is adjusted manually, the adjusting rod 63 is loosened, the lower end of the connecting disc 64 is abutted against the upper end of the bushing, at the moment, the inner sides of the four moving rods 66 are abutted against the periphery of the bushing, and the positioning, clamping and limiting effects are realized to a certain extent, of course, the lower ends of the moving rods 66 are abutted against the upper end face of the small hole of the connecting rod, away from the bushing, the operation of external hydraulic equipment is controlled, and the hydraulic equipment acts on the pressure disc 631, along with the descending of the pressure disc 631, the adjusting rod 63 and the connecting disc 64, gradually abutting a new bushing against the connecting rod, ejecting the bushing positioned in the connecting rod from the bushing replacing hole 1a, gradually moving upwards in the descending process of the equipment, compressing the compression springs 68 until the bushing is replaced, removing external hydraulic equipment and lifting the adjusting rod 63, and extending the compression springs 68 to reset the moving rod 66 and wait for the follow-up production and processing, wherein in the bushing replacing process, each moving rod 66 is always attached to the periphery of the bushing, plays a certain limiting role on the bushing, reduces the possibility of offset, ensures the forming quality of a workpiece, greatly improves the working process, reduces the danger and meets the use requirement;

in the above process: through the mutual matching of the big end positioning mechanism 3 and the small end positioning mechanism 4, the placed workpiece has good stability in the longitudinal direction, the possibility of shaking or jumping is reduced, meanwhile, the small end positioning mechanism 4 has the function of self-adaptively adjusting the clamping force, so that the workpiece can be freely adjusted according to different use requirements, the possibility of damage of equipment is reduced, the use function of the equipment is greatly improved, and the effective proceeding of subsequent production and processing work is ensured; the end face abutting mechanism 5 replaces manual work to finish adjusting and clamping the end face of the workpiece, so that time and labor are saved, the working process is effectively improved, the possibility of jumping in the vertical direction is reduced, the stability is ensured, meanwhile, the large positioning rod 2 can be matched to finish accurate positioning of the position of the connecting rod workpiece, the shifting of the connecting rod workpiece is prevented, and the use requirement is met; through the sleeve changing auxiliary mechanism 6, the limit of the position of the bushing can be completed instead of manual work, the accuracy of the bushing travelling direction in the sleeve changing working process is ensured, the working process is improved, and the use functionality is strong; this device reasonable in design, simple structure, processing convenience just can effectively accomplish the stable centre gripping location to the engine connecting rod, reduces its possibility that takes place the skew, simultaneously, realizes to a certain extent that it takes place the skew to the spacing of bush direction of movement, prevents that it from taking place the skew, improves work progress, reduces the danger, fully satisfies production and processing user demand.

In order to effectively complete the clamping of the small hole of the workpiece, the small-end positioning mechanism 4 comprises a vertical plate 41, one side of the vertical plate 41 is provided with a shell 42, a guide block 43 is arranged at the geometric center of one side in the shell 42, one side end surface of the guide block 43 is of an inclined design, an inclined wedge block 44 matched with the guide block 43 is movably arranged in the shell 42, a rotating screw 45 is arranged in the vertical plate 41, one end surface of the inclined wedge block 44 corresponds to the inclined surface of the guide block 43, and the inclined design is adopted, so that the guide block 43 can be ejected and moved along with the movement of the inclined wedge block 44, the effective clamping operation is ensured, and the end part of the guide block is connected with the inclined wedge block 44, specifically: after the workpiece is respectively matched with the large positioning rod 2 and the sleeve changing hole, the rotating screw 45 is adjusted to drive the inclined wedge 44 to move in the shell 42, along with the movement of the inclined wedge 44, the end face of the inclined wedge 44 is attached to the end face of the guide block 43, the guide block 43 is gradually guided out until the guide block 43 acts on the periphery of the workpiece, and the large-head positioning mechanism 3 is matched to finish clamping and positioning the workpiece, so that the possibility of shaking in the longitudinal direction is reduced, the effective production and processing work is ensured, and the use requirement is met; further, a limiting reset mechanism 46 for limiting the moving direction of the guide block 43 and facilitating reset of the guide block 43 is arranged in the casing 42, wherein for the establishment of the limiting reset mechanism 46, a limiting rod (not shown in the figure) which is arranged in the casing 42 and penetrates through the lower end of the guide block 43 and is in a T-shaped design is included, a telescopic spring (not shown in the figure) is sleeved at the lower half part of the limiting rod and is positioned in the guide block 43, a sliding groove (not shown in the figure) is formed in the wedge block 44 corresponding to the limiting rod and conforming to the moving direction of the wedge block 44, the purpose is to prevent equipment components from shifting in the operation process, improve the working process, when the wedge block 44 drives the guide block 43 to be ejected and abutted, the telescopic spring is compressed, the guide block 43 is accurately guided out under the limit of the limiting rod, accuracy of the working position is ensured, when the wedge block 44 is driven to reversely move and reset, the telescopic spring acts on the bottom in the guide block 43 and drives the guide block 43 to reset, convenience is provided for subsequent use of the equipment, and the equipment is strong in use functionality.

In order to prevent the connecting rod from jumping in the vertical direction, the end face abutting mechanism 5 further improves the stability of the connecting rod, the end face abutting mechanism comprises a mounting plate 51, the lower end of the mounting plate 51 is provided with an air cylinder 52, a mounting seat 53 is arranged on a workbench 1 on one side of the mounting plate 51, a connecting plate 54 is arranged on the outer side of the mounting seat 53, two connecting plates 54 are arranged left and right, a rotating rod 55 is arranged on the other side of the connecting plate 54 and is respectively arranged on two sides of the rotating rod 55 and connected in a rotating mode, the rotating rod 55 is guaranteed to have good rotation adjusting performance, further the rotating rod can act on a workpiece to complete abutting, the lifting stability is improved, one side end part of the rotating rod 55 is hinged with the output end of the air cylinder 52, an abutting block 56 in a concave shape is arranged below the other side end part, the abutting block 56 is connected with the one side end part of the rotating rod 55 by adopting a ball head, the purpose of guaranteeing that the abutting block 56 can be effectively abutted on a rod body of the connecting rod, and the abutting effect of the end face abutting mechanism 5 on the workpiece is guaranteed, and the jumping is prevented, and the concrete description is that: the large hole of the connecting rod is aligned with the large positioning rod 2 and then is placed, the position of the connecting rod is adjusted, the air cylinder 52 is controlled to extend, the rotating rod 55 rotates, namely, one end of the rotating rod 55 hinged with the air cylinder 52 is lifted, one end of the rotating rod 55 connected with the abutting block 56 is lowered, meanwhile, the inner side surface of the abutting block 56 is fully abutted against the periphery of a workpiece, and therefore the connecting rod can be accurately positioned and placed under the action of the large positioning rod 2 and the abutting block 56, and at the moment, the small hole of the connecting rod is aligned with the sleeve replacing hole 1a, so that convenience is provided for smooth development of subsequent production and machining work, and the working process is improved.

In order to effectively complete the propping of the big hole end of the connecting rod, the big head positioning mechanism 3 comprises an installing table 31 which is designed in an L shape, and an adjustable propping screw rod 32 is arranged at the geometric center of the installing table 31, namely, after the connecting rod is placed on the workbench 1, especially after the big hole and the small hole are respectively matched with the big positioning rod 2 and the sleeve exchanging hole, the propping screw rod 32 is adjusted, so that the end part of the connecting rod is effectively propped against the periphery of the connecting rod, the shaking of the big hole side of the connecting rod is avoided, the placing stability of the connecting rod is ensured, and the effective production and processing work is ensured.

The present utility model is not limited to the above-mentioned embodiments, and any equivalent embodiments which can be changed or modified by the technical content disclosed above can be applied to other fields, but any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical substance of the present utility model without departing from the technical content of the present utility model still belong to the protection scope of the technical solution of the present utility model.

Claims (4)

1. The utility model provides an engine connecting rod production is with quick accurate cover device that changes, is including the workstation that is several font designs, the rear side of workstation top is provided with big locating lever, the front side of workstation top has been seted up and has been changed the trepanning, its characterized in that is close to workstation corner of big locating lever one side is provided with big head positioning mechanism, is close to workstation corner of trepanning one side is provided with little head positioning mechanism, is located workstation one side between big locating lever and the trepanning is provided with the terminal surface and supports tight mechanism, with change the corresponding workstation top in trepanning and be provided with and cover auxiliary mechanism, change the trepanning auxiliary mechanism and include the pole setting, two pole setting upper ends are provided with the carrier plate, be provided with the regulation pole in the carrier plate, the upper end of regulation pole is provided with the adapter sleeve, the lower extreme of adapter sleeve is provided with the cross-section and personally submits the annular and design, the lower extreme of adapter sleeve is provided with the bottom plate, the lower extreme in the interior lower extreme has been seted up ring groove, with the platen corresponding platen is provided with and changes the cover auxiliary mechanism, it is provided with the annular to run through the movable disc to be provided with the ring groove to change the carrier plate, the carrier plate is located the periphery and is provided with the movable disc.

2. The quick and accurate sleeve changing device for producing the engine connecting rod according to claim 1, wherein the small end positioning mechanism comprises a vertical plate, a shell is arranged on one side of the vertical plate, a guide block is arranged at the geometric center of one side in the shell, one side end surface of the guide block is of an inclined design, an inclined wedge block matched with the guide block is further movably arranged in the shell, a rotating screw rod is arranged in the vertical plate, the end part of the rotating screw rod is connected with the inclined wedge block, and a limiting reset mechanism which limits the moving direction of the guide block and is convenient for resetting the guide block is arranged in the shell.

3. The quick and accurate sleeve changing device for producing the engine connecting rod according to claim 2, wherein the end surface abutting mechanism comprises a mounting plate, an air cylinder is arranged at the lower end of the mounting plate, a mounting seat is arranged on a workbench on one side of the mounting plate, a connecting plate is arranged on the outer side of the mounting seat, a rotating rod is arranged on the other side of the connecting plate, one side end part of the rotating rod is hinged with the output end of the air cylinder, and an abutting block in a concave shape is arranged below the other side end part.

4. The quick and accurate sleeve changing device for producing the engine connecting rod according to claim 3, wherein the big end positioning mechanism comprises an installing table in an L-shaped design, and an adjustable tight-supporting screw is arranged at the geometric center of the installing table.