CN215562884U - Pin shaft connecting mechanism at root of movable arm of excavator and excavator - Google Patents
Pin shaft connecting mechanism at root of movable arm of excavator and excavator Download PDFInfo
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- CN215562884U CN215562884U CN202121395920.XU CN202121395920U CN215562884U CN 215562884 U CN215562884 U CN 215562884U CN 202121395920 U CN202121395920 U CN 202121395920U CN 215562884 U CN215562884 U CN 215562884U
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- pin shaft
- excavator
- root
- cover plate
- movable arm
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Abstract
The utility model discloses a pin shaft connecting mechanism at the root of a movable arm of an excavator and the excavator, wherein the pin shaft connecting mechanism comprises a movable arm, a rotary table, a cover plate, a pin shaft and a check ring; the movable arm is connected with the rotary table through a pin shaft; the hinge pin is characterized in that a step is machined at one end of the hinge pin, the check ring is installed between the step of the hinge pin and the rotary table, cover plates are installed at two ends of the hinge pin respectively, and the cover plates are fixed on the rotary table through fasteners. The retainer ring prevents the pin shaft from shifting outwards to impact the cover plate, and effectively prolongs the service life of the cover plate.
Description
Technical Field
The utility model relates to a pin shaft connecting mechanism for the root part of a movable arm of an excavator, and belongs to a pin shaft connecting mechanism in the mechanical industry.
Background
Due to long-time high-load work and improper operation of an operator, the connecting part of the rotary table and the movable arm can generate conditions of insufficient lubrication, overlarge outward lateral force and the like, so that the abrasion of a pin shaft, the axial movement and the axial deformation of the rotary table are easily caused, and the failure of the movable arm in various forms is caused.
Two connecting mechanisms are commonly used in the existing excavator, one is that a pin shaft is completely fixed, the degree of freedom is zero, lubrication is only limited to a movable arm assembly part, and system failure is easily caused; the other type is a floating pin shaft which can freely rotate and move in all directions, and when the pin shaft is subjected to lateral force, the pin shaft moves towards the outer side of the rotary table to impact an outer side cover plate, so that the service life of the cover plate is influenced.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems in the prior art, the utility model provides a pin shaft connecting mechanism for the root part of an excavator movable arm.
In order to achieve the purpose, the utility model adopts the technical scheme that:
the utility model discloses a pin shaft connecting mechanism at the root part of a movable arm of an excavator, which comprises a movable arm, a rotary table, a cover plate, a pin shaft and a check ring, wherein the movable arm is connected with the rotary table through a pin shaft; the movable arm is connected with the rotary table through a pin shaft; the hinge pin is characterized in that a step is machined at one end of the hinge pin, the check ring is installed between the step of the hinge pin and the rotary table, cover plates are installed at two ends of the hinge pin respectively, and the cover plates are fixed on the rotary table through fasteners.
The preferable scheme is as follows: the fastener is a bolt and a washer; the cover plate is provided with a plurality of mounting holes, the rotary table is provided with a plurality of threaded holes coaxial with the mounting holes, and the cover plate is fixed on the rotary table through a plurality of groups of bolts and gaskets.
The preferable scheme is as follows: the plurality of mounting holes are evenly distributed along the periphery of the cover plate.
The preferable scheme is as follows: the mounting hole is a counter bore, so that the head of the bolt penetrates into the cover plate.
As an optimization scheme of the utility model: an annular groove is processed on the inner side of the cover plate, and an O-shaped ring is assembled in the annular groove.
The preferable scheme is as follows: the cover plate is provided with a threaded hole which penetrates through the pin shaft to form an oil injection channel.
As an optimization scheme of the utility model: and an axial lubricating channel penetrating through the whole pin shaft is arranged in the pin shaft and is used for communicating the oil filling channels at the cover plates on the two sides.
The specific scheme is as follows: both ends of the rotary table are provided with a rotary table bush; the middle part of the movable arm is provided with a spacer bush, and two sides of the spacer bush are respectively provided with a movable arm bushing.
The preferable scheme is as follows: an annular groove is machined on the outer surface of the spacer bush, and a plurality of through holes are machined in the annular groove; the movable arm is provided with a threaded hole which penetrates through the annular groove of the spacer bush to form an oil injection channel; and oil storage grooves for storing lubricating oil are formed in the inner surfaces of the rotary table bushing and the movable arm bushing.
The utility model also discloses an excavator, which is provided with the pin shaft connecting mechanism at the root part of the excavator movable arm.
The utility model has the beneficial effects that:
the outer end of the movable arm and the outer end of the cover plate are provided with a plurality of lubricating points, the radial direction and the end face of the pin shaft are completely covered by lubricating grease, mutual friction with the bush is avoided, abrasion is effectively reduced, the retainer ring prevents the pin shaft from shifting outwards to impact the cover plate, and the service life of the cover plate is effectively prolonged.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model, are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model without limiting the utility model to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
In the drawings:
FIG. 1 is a schematic overall view of a pin shaft connecting mechanism at the root of an excavator moving arm according to the present invention;
FIG. 2 is a cross-sectional view of the pin connecting mechanism of the root of the excavator boom of the present invention;
FIG. 3 is a schematic view of the pin of the present invention (a is an overall view, and b is a cross-sectional view);
fig. 4 is a schematic view of a turntable bushing of the present invention (a is an overall view and b is a cross-sectional view);
FIG. 5 is a schematic view of a boom bushing of the present invention (a is an overall view, and b is a cross-sectional view);
FIG. 6 is a schematic view of the spacer of the present invention.
The attached drawings are as follows: 1. the oil-water separator comprises a movable arm, 2, a rotary table, 3, an O-shaped ring, 4, a cover plate, 5, a pin shaft, 6, a retainer ring, 7, a bolt, 8, a rotary table bushing, 9, a movable arm bushing, 10, a spacer bush, 11, an axial lubricating channel, 12, an annular groove, 13, a through hole, 14 and an oil storage groove.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 and 2, a pin shaft connecting mechanism for the root of a movable arm of an excavator comprises a movable arm 1, a rotary table 2, a cover plate 4, a pin shaft 5 and a retainer ring 6; the movable arm 1 is connected with the rotary table 2 through a pin shaft 5; a step is processed at one end of the pin shaft 5, and a retainer ring 6 is arranged between the step of the pin shaft 5 and the turntable 2 and used for preventing the pin shaft 5 from moving outwards; two ends of the pin shaft 5 are respectively provided with a cover plate 4, and the cover plates 4 are fixed on the rotary table 2 through fasteners.
The preferable scheme is as follows: the fastener is a bolt 7 and a washer; the cover plate 4 is provided with a plurality of mounting holes, the turntable 2 is provided with a plurality of threaded holes coaxial with the mounting holes, and the cover plate 4 is fixed on the turntable 2 through a plurality of groups of bolts 7 and gaskets.
The preferable scheme is as follows: the plurality of mounting holes are evenly distributed along the periphery of the cover plate 4.
The preferable scheme is as follows: the mounting holes are counter bored so that the heads of the bolts 7 penetrate into the cover plate 4.
As an optimization scheme of the utility model: an annular groove is formed on the inner side of the cover plate 4, and an O-shaped ring 3 is assembled in the annular groove to prevent lubricating oil from flowing outwards.
With continued reference to fig. 2, the cover plate 4 is formed with a threaded hole penetrating to the pin 5, thereby forming an oil filling channel.
As an optimization scheme of the utility model: an axial lubricating channel 11 penetrating through the whole pin shaft is arranged in the pin shaft 5 and used for communicating oil filling channels at the cover plates 4 on the two sides, so that lubricating oil is distributed more uniformly.
The preferable scheme is as follows: and a processing threaded hole is formed in one end of the axial lubricating channel 11 and is used for pulling out the pin shaft 5 when the pin shaft 5 is replaced.
Continuing to refer to fig. 2, both ends of the turntable 2 are provided with a turntable bushing 8; the middle part of the movable arm 1 is provided with a spacer 10, and two sides of the spacer 10 are respectively provided with a movable arm bushing 9.
As shown in fig. 4, 5 and 6, an annular groove 12 is machined on the outer surface of the spacer 10, and a plurality of through holes 13 are machined in the annular groove 12; a threaded hole is processed in the movable arm 1, and the threaded hole penetrates through the annular groove 12 of the spacer sleeve 10 to form an oil injection channel; the inner surfaces of the turntable bushing 8 and the boom bushing 9 are each provided with an oil reservoir 14 for storing lubricating oil.
From the above, the lubricating oil enters the cavity between the cover plate 4 and the pin shaft 5 through the threaded hole of the cover plate 4 and then enters the gap between the turntable bushing 8 and the pin shaft 5 in the turntable 2 to lubricate the turntable 2, the pin shaft 5 is provided with the axial lubricating channel 11, the upper cavity and the lower cavity are communicated, so that the lubricating oil is distributed more uniformly, the lubricating oil enters the spacer bush 10 in the movable arm 1 through the threaded hole of the movable arm 1 and then enters the gap between the movable arm bushing 9 and the pin shaft 5 in the movable arm 1 to lubricate the movable arm 1.
In the installation process, a pin shaft 5 penetrates through a retainer ring 6, the rotary table 2 is inserted from the upper end shown in figure 2, and the rotary table 2 and the movable arm 1 are connected together until the pin shaft 5, the retainer ring 6 and the rotary table 2 are attached; placing the O-shaped ring 3 into the annular groove of the cover plate 4; pressing the cover plate 4 to the O-shaped ring 3 and attaching the O-shaped ring to the end face of the rotary table 2, wherein the mounting hole of the cover plate 4 is aligned with the threaded hole of the rotary table 2; and screwing the bolt 7 into the rotary table 2 through the mounting holes of the gasket and the cover plate 4, and screwing the bolt according to proper torque to finish assembly.
The utility model also discloses an excavator, which is provided with the pin shaft connecting mechanism at the root part of the excavator movable arm.
In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the utility model may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than others, combinations of features of different embodiments are also meant to be within the scope of the utility model and form different embodiments. For example, in the above embodiments, those skilled in the art can use the combination according to the known technical solutions and technical problems to be solved by the present application.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (10)
1. The utility model provides a pin shaft coupling mechanism of excavator swing arm root which characterized in that:
comprises a movable arm (1), a rotary table (2), a cover plate (4), a pin shaft (5) and a retainer ring (6);
the movable arm (1) is connected with the rotary table (2) through a pin shaft (5);
the hinge pin structure is characterized in that a step is machined at one end of the hinge pin (5), the retainer ring (6) is installed between the step of the hinge pin (5) and the rotary table (2), the two ends of the hinge pin (5) are respectively provided with a cover plate (4), and the cover plates (4) are fixed on the rotary table (2) through fasteners.
2. The pin shaft connecting mechanism for the root of the boom of the excavator according to claim 1, wherein:
the fastener is a bolt (7) and a washer;
the cover plate (4) is provided with a plurality of mounting holes, the rotary table (2) is provided with a plurality of threaded holes coaxial with the mounting holes, and the cover plate (4) is fixed on the rotary table (2) through a plurality of groups of bolts (7) and gaskets.
3. The pin shaft connecting mechanism for the root of the boom of the excavator as claimed in claim 2, wherein:
the mounting holes are evenly distributed along the periphery of the cover plate (4).
4. The pin shaft connecting mechanism for the root of the boom of the excavator as claimed in claim 2, wherein:
the mounting hole is a counter bore, so that the head of the bolt (7) penetrates into the cover plate (4).
5. The pin shaft connecting mechanism for the root of the boom of the excavator according to claim 1, wherein:
an annular groove is processed on the inner side of the cover plate (4), and an O-shaped ring (3) is assembled in the annular groove.
6. The pin shaft connecting mechanism for the root of the boom of the excavator according to claim 1, wherein:
the cover plate (4) is provided with a threaded hole which penetrates through the pin shaft (5) to form an oil injection channel.
7. The pin shaft connecting mechanism for the root of the boom of the excavator according to claim 6, wherein:
an axial lubricating channel (11) penetrating through the whole pin shaft is arranged in the pin shaft (5) and is used for communicating oil injection channels at the cover plates (4) on the two sides.
8. The pin shaft connecting mechanism for the root of the boom of the excavator according to claim 1, wherein:
both ends of the turntable (2) are provided with a turntable bush (8);
a spacer bush (10) is arranged in the middle of the movable arm (1), and movable arm bushings (9) are arranged on two sides of the spacer bush (10) respectively.
9. The pin connecting mechanism for the root of the boom of the excavator according to claim 8, wherein:
an annular groove (12) is machined in the outer surface of the spacer bush (10), and a plurality of through holes (13) are machined in the annular groove (12);
the movable arm (1) is provided with a threaded hole which penetrates through an annular groove (12) of the spacer bush (10) to form an oil injection channel;
and oil storage grooves (14) for storing lubricating oil are formed in the inner surfaces of the turntable bush (8) and the movable arm bush (9).
10. An excavator, characterized in that:
a pin connecting mechanism to which a root of an excavator boom according to any one of claims 1 to 9 is attached.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121395920.XU CN215562884U (en) | 2021-06-23 | 2021-06-23 | Pin shaft connecting mechanism at root of movable arm of excavator and excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121395920.XU CN215562884U (en) | 2021-06-23 | 2021-06-23 | Pin shaft connecting mechanism at root of movable arm of excavator and excavator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215562884U true CN215562884U (en) | 2022-01-18 |
Family
ID=79819674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121395920.XU Active CN215562884U (en) | 2021-06-23 | 2021-06-23 | Pin shaft connecting mechanism at root of movable arm of excavator and excavator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215562884U (en) |
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2021
- 2021-06-23 CN CN202121395920.XU patent/CN215562884U/en active Active
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