CN113446304A - Pin connection mechanism and working machine - Google Patents
Pin connection mechanism and working machine Download PDFInfo
- Publication number
- CN113446304A CN113446304A CN202110711208.4A CN202110711208A CN113446304A CN 113446304 A CN113446304 A CN 113446304A CN 202110711208 A CN202110711208 A CN 202110711208A CN 113446304 A CN113446304 A CN 113446304A
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- China
- Prior art keywords
- pressing plate
- pin
- pressure plate
- pin shaft
- groove
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
- F16C11/10—Arrangements for locking
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Component Parts Of Construction Machinery (AREA)
Abstract
The invention provides a pin shaft connecting mechanism and an operation machine, wherein the pin shaft connecting mechanism comprises: the hinge pin comprises a hinge pin body and a hinge pin body, wherein the hinge pin body is suitable for forming a switching shaft of a first connecting piece and a second connecting piece, and a groove is formed in the side wall of the hinge pin body; the pressing plate assembly comprises at least two pressing plate units, each pressing plate unit is arranged circumferentially around the center line of the pressing plate assembly, and one side, close to the center line of the pressing plate assembly, of each pressing plate unit is embedded into the groove; and the fixing piece is connected with the pressure plate unit and is suitable for fixing the pressure plate unit on the first connecting piece or the second connecting piece. According to the pin shaft connecting mechanism and the operation machine, one side of each pressing plate unit is embedded into the groove at the same time, and the different directions of the pin shaft body are limited at the same time, so that the pressing plates are uniformly stressed and are not easy to deform when the pin shaft body bears a large axial load. And the pin shaft connecting mechanism is convenient to install, welding is not needed, and the condition that a welding seam is cracked and fails is avoided.
Description
Technical Field
The invention relates to the technical field of operation equipment, in particular to a pin shaft connecting mechanism and operation machinery.
Background
A work implement of a work machine such as an excavator generally includes mechanisms such as a tilt head, a boom, an arm, a bucket, cylinders, and a link, and the mechanisms are connected to each other by a pin and an attachment thereof. Common pin shaft forms are: a pin shaft with a hole and a yoke plate pin shaft. One end of the pin shaft with the hole is fixed on the positioning sleeve by a bolt inserted into the hole, and the bolt limits the circumferential rotation and the axial movement of the pin shaft; the yoke plate pin shaft is mostly a welding body of the pin shaft and the yoke plate, and the yoke plate pin shaft is directly fixed on a component through a pressing plate or a screw.
The common pin shaft with holes and the connecting plate pin shaft have the following defects:
1) the perforated end of the pin shaft with the hole is fixed on the positioning sleeve by a bolt, the bolt limits the circumferential rotation and the axial movement of the pin shaft, the bolt is sheared, and if the pin shaft axially moves or is clamped with the shaft sleeve, the bolt is easily deformed or even broken by larger shearing force;
2) the yoke plate round pin axle is mostly the welding body of round pin axle and yoke plate, and it is the yoke plate that the yoke plate round pin axle has been fixed to the unilateral through clamp plate or screw snap-on the part, if the round pin axle takes place the jamming with the axle sleeve, has the axle sleeve to scurry outward or the risk of yoke plate round pin axle welding seam inefficacy fracture.
Disclosure of Invention
The invention provides a pin shaft connecting mechanism and an operating machine, which are used for solving the problems that a fixing part of a pin shaft in the prior art is unbalanced in stress and easy to damage.
The invention provides a pin shaft connecting mechanism, comprising:
the hinge pin comprises a hinge pin body and a hinge pin body, wherein the hinge pin body is suitable for forming a switching shaft of a first connecting piece and a second connecting piece, and a groove is formed in the side wall of the hinge pin body;
the pressing plate assembly comprises at least two pressing plate units, each pressing plate unit is arranged circumferentially around the center line of the pressing plate assembly, and one side, close to the center line of the pressing plate assembly, of each pressing plate unit is embedded into the groove;
and the fixing piece is connected with the pressure plate unit and is suitable for fixing the pressure plate unit on the first connecting piece or the second connecting piece.
According to the pin shaft connecting mechanism provided by the invention, a gap is formed between one side of the pressure plate unit close to the central line of the pressure plate assembly and the side wall and the bottom of the groove.
According to the pin shaft connecting mechanism provided by the invention, the central line of the pressure plate assembly is superposed with the axis of the pin shaft body.
According to the pin shaft connecting mechanism provided by the invention, the pressure plate units are fan-shaped plates taking the central line of the pressure plate units as the center, and the central angles of the pressure plate units are equal.
According to the pin shaft connecting mechanism provided by the invention, two pressure plate units are arranged, and the two pressure plate units are symmetrically arranged relative to the center of the pressure plate assembly.
According to the pin shaft connecting mechanism provided by the invention, the fixing piece comprises a screw, a through hole is formed in the pressing plate assembly, and the threaded end of the screw is suitable for being in threaded connection with the first connecting piece or the second connecting piece after penetrating through the through hole.
According to the pin shaft connecting mechanism provided by the invention, the through holes are arranged on the pressure plate units, and/or the through holes are arranged at the joint positions of the adjacent pressure plate units.
According to the pin shaft connecting mechanism provided by the invention, the fixing piece further comprises a gasket, the gasket is arranged corresponding to the screw, and the gasket is positioned between the head of the screw and the pressure plate unit.
According to the pin shaft connecting mechanism provided by the invention, at least one section of straight section is respectively arranged at the bottom of the groove and the inner side of the pressing plate assembly, and the straight section positioned at the inner side of the pressing plate assembly corresponds to the straight section positioned at the bottom of the groove.
The invention also provides an operation machine which comprises an operation arm, an underframe and the pin shaft connecting mechanism, wherein the operation arm is rotatably connected to the underframe through the pin shaft connecting mechanism, the pin shaft body forms a switching shaft of the operation arm and the underframe, and the pressing plate unit is fixed on the operation arm or the underframe by the fixing piece.
According to the pin shaft connecting mechanism and the operation machine, one side of each pressing plate unit is embedded into the groove at the same time, and the different directions of the pin shaft body are limited at the same time, so that the pressing plates are uniformly stressed and are not easy to deform when the pin shaft body bears a large axial load. And the pin shaft connecting mechanism is convenient to install, welding is not needed, and the condition that a welding seam is cracked and fails is avoided.
Furthermore, gaps are formed among one side of the pressing plate unit, close to the central line of the pressing plate assembly, the side wall of the groove and the bottom of the groove, so that the pin shaft can move in an allowable range during working, and the service life of the pin shaft is prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a cross-sectional view of a pin connection mechanism provided by the present invention;
fig. 2 is a schematic structural view showing a matching relationship between a pin shaft body and a pressing plate unit in the pin shaft connecting mechanism provided by the present invention;
fig. 3 is an exploded view of a pin connection mechanism provided in the present invention;
fig. 4 is a schematic structural view of a pin body in the pin connecting mechanism provided in the present invention;
FIG. 5 is a schematic structural diagram of a pressing plate unit in the pin connecting mechanism according to the present invention;
fig. 6 is an installation diagram of a pin connecting mechanism in a working machine according to the present invention.
Reference numerals:
100. a pin shaft body; 110. A trench; 111. A straight section;
200. a platen unit; 210. A notch; 220. Perforating;
300. a screw; 310. A gasket; 400. A first connecting member;
500. a second connecting member.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.
In embodiments of the invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "above," and "over" a second feature may mean that the first feature is directly above or obliquely above the second feature, or that only the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lower level than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
The following describes a pin connecting mechanism according to an embodiment of the present invention with reference to fig. 1 to 3, which can be applied to a working machine such as an excavator to achieve a pivotal connection between two connected components. Hereinafter, for convenience of description, two components connected by the pin connection mechanism will be referred to as a first connection member 400 and a second connection member 500, respectively.
The round pin hub connection mechanism includes: the hinge pin comprises a hinge pin body 100, a pressing plate assembly and a fixing piece. The first connecting member 400 and the second connecting member 500 are respectively provided with a through hole 220, and the pin body 100 passes through the through hole 220, so that the pin body 100 forms an adapter shaft of the first connecting member 400 and the second connecting member 500, and the first connecting member 400 and the second connecting member 500 can relatively rotate relative to the adapter shaft. The side wall of the pin body 100 is provided with a groove 110, and the groove 110 is located outside the through holes 220 of the first connecting piece 400 and the second connecting piece 500.
The pressing plate assembly comprises at least two pressing plate units 200, each pressing plate unit 200 is arranged circumferentially around the center line of the pressing plate assembly, and the pressing plate units 200 are spliced together to form the pressing plate assembly. The end portions of the platen unit 200 do not extend to the center line position of the platen assembly, so that a position limiting hole having a shape corresponding to the shape of the groove 110 is formed at the center position of the platen assembly. One side of the pressing plate unit 200 close to the center line of the pressing plate assembly is embedded into the groove 110, and each pressing plate unit 200 simultaneously limits the pin shaft body 100, so as to prevent the pin shaft body 100 from sliding out of the through holes 220 of the first connecting piece 400 and the second connecting piece 500.
In an embodiment of the present invention, as shown in fig. 4 and 5, at least one straight section 111 is respectively disposed at the bottom of the groove 110 and the inner side of the platen assembly, and the straight section 111 at the inner side of the platen assembly corresponds to the straight section 111 at the bottom of the groove 110. The pressing plate assembly can not only play a role in limiting axial movement of the pin shaft body 100, but also play a role in limiting axial rotation of the pin shaft body 100. Although fig. 2 shows a structure in which two straight sections 111 are respectively disposed at the bottom of the groove 110 and the inner side of the platen assembly, it can be understood that the axial rotation limitation of the pin shaft body 100 can also be achieved when one or more than three straight sections 111 are respectively disposed at the bottom of the groove 110 and the inner side of the platen assembly.
In an embodiment of the present invention, a gap is formed between one side of the pressing plate unit 200 close to the center line of the pressing plate assembly and the side wall and the bottom of the groove 110, so that the pin shaft body 100 can move within an allowable range during operation, the service life of the pin shaft body 100 is prolonged, impact on the pressing plate assembly and the fixing member can be reduced, and the pressing plate assembly or the fixing member can be prevented from being damaged.
Optionally, the central line of the pressing plate assembly coincides with the axis of the pin shaft body 100, so that when the pressing plate assembly is impacted by the pin shaft body 100 in the axial direction, acting forces applied to all directions are equal, the stress is more uniform, and the firmness is better.
Optionally, the pressure plate unit 200 is a sector plate with the center line of the pressure plate unit 200 as the center, and the pressure plate assembly formed by splicing the pressure plate units 200 is a circular ring structure. The central angles of the pressure plate units 200 are equal, the stress is more balanced, and the production is more convenient.
In one embodiment of the present invention, two platen units 200 are provided, and the two platen units 200 are symmetrically disposed about the center of the platen assembly. Specifically, the platen unit 200 may be provided as a semicircular plate having a central angle of 180 °. The circle centers of the two pressure plate units 200 are overlapped, semicircular notches 210 are respectively arranged at the circle center positions, and when the two pressure plate units 200 are spliced together, the notches 210 on the two pressure plate units 200 are spliced into a circular limiting hole. The two platen units 200 are fixed by fixing members, respectively.
The fixing member is coupled to the platen unit 200 and adapted to fix the platen unit 200 to the first connector 400 or the second connector 500.
In one embodiment of the present invention, the fixing member includes a screw 300, a through hole 220 is formed on the pressing plate assembly, and a threaded end of the screw 300 is adapted to be threaded with the first connecting member 400 or the second connecting member 500 after passing through the through hole 220. The fixing member with the structure has the advantages of simple structure and convenience in installation, and can be conveniently replaced when the pressing plate unit 200 has the problems of deformation, abrasion and the like. Of course, in some embodiments of the present invention, the fixing member may be fixed by a pin or a welding method.
Optionally, the fixing member further includes a spacer 310, the spacer 310 is disposed corresponding to the screw 300, and the spacer 310 is sleeved with the screw 300 and located between the head of the screw 300 and the pressure plate unit 200. The contact area can be increased by arranging the gasket 310, the fixing effect of the pressure plate unit 200 is better, and the gasket 310 can also reduce the pressure and protect the screw 300 and the pressure plate unit 200.
In an alternative mode, the through holes 220 are formed in the pressure plate unit 200, the screws 300 are screwed with the first connector 400 or the second connector 500 through the through holes 220 of the pressure plate unit 200, and each pressure plate unit 200 is fixed by at least one screw 300.
In another alternative, the through holes 220 are formed at the joint positions of the adjacent platen units 200, and one screw 300 can simultaneously limit the joint positions of the adjacent two platen units 200.
In yet another alternative, the platen unit 200 and the seam position of the adjacent platen unit 200 are provided with the through holes 220, and the platen unit 200 is fixed by two kinds of screws 300 at the same time.
In an embodiment of the present invention, there is also provided a work machine, as shown in fig. 6, including a work arm, an undercarriage, and the pin connecting mechanism of any one of the above. The work arm is one of the first link 400 and the second link 500, and the undercarriage is the other of the first link 400 and the second link 500. The operation arm is rotatably connected to the base frame through a pin shaft connecting mechanism, the pin shaft body 100 forms an adapter shaft of the operation arm and the base frame, and the fixing member fixes the pressing plate unit 200 on the operation arm or the base frame.
According to the pin shaft connecting mechanism and the operation machine provided by the embodiment of the invention, the pin shaft body 100 is limited by the pressure plate assembly, so that the pin shaft connecting mechanism is uniform in stress, not easy to damage, safer to use and convenient to install and replace. The clearance that clamp plate assembly and round pin axle body 100 formed can also make round pin axle body 100 have certain activity, and life is longer, can further improve safety in utilization.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a round pin hub connection mechanism which characterized in that includes:
the hinge pin comprises a hinge pin body and a hinge pin body, wherein the hinge pin body is suitable for forming a switching shaft of a first connecting piece and a second connecting piece, and a groove is formed in the side wall of the hinge pin body;
the pressing plate assembly comprises at least two pressing plate units, each pressing plate unit is arranged circumferentially around the center line of the pressing plate assembly, and one side, close to the center line of the pressing plate assembly, of each pressing plate unit is embedded into the groove;
and the fixing piece is connected with the pressure plate unit and is suitable for fixing the pressure plate unit on the first connecting piece or the second connecting piece.
2. The pin connecting mechanism according to claim 1, wherein a gap is provided between one side of the pressure plate unit close to the center line of the pressure plate assembly and the side wall and the bottom of the groove.
3. The pin connection mechanism of claim 1, wherein the centerline of the platen assembly coincides with the axis of the pin body.
4. The pin connecting mechanism according to claim 1, wherein the pressure plate units are sector plates centered on a center line of the pressure plate units, and central angles of the pressure plate units are equal.
5. The pintle connection mechanism of any one of claims 1-4, wherein there are two platen units, the two platen units being symmetrically disposed about a center of the platen assembly.
6. The pin connecting mechanism according to claim 1, wherein the fixing member comprises a screw, the pressure plate assembly is provided with a through hole, and a threaded end of the screw is adapted to be threaded with the first connecting member or the second connecting member after passing through the through hole.
7. A pin connection according to claim 6, wherein said perforations are provided on said platen units and/or said perforations are provided at the seam locations of adjacent said platen units.
8. The pin connection mechanism according to claim 7, wherein the fixing member further comprises a spacer provided corresponding to the screw, the spacer being located between a head of the screw and the pressure plate unit.
9. The pin connecting mechanism according to claim 1, wherein the groove bottom of the groove and the inner side of the pressing plate assembly are respectively provided with at least one straight section, and the straight section at the inner side of the pressing plate assembly corresponds to the straight section at the groove bottom of the groove.
10. A working machine comprising a working arm, a base frame and a pin connection according to any one of claims 1-9, said working arm being pivotally connected to said base frame by said pin connection, said pin body constituting an adapter shaft for said working arm and said base frame, said fixing member fixing said presser unit to said working arm or said base frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110711208.4A CN113446304A (en) | 2021-06-25 | 2021-06-25 | Pin connection mechanism and working machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110711208.4A CN113446304A (en) | 2021-06-25 | 2021-06-25 | Pin connection mechanism and working machine |
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| Publication Number | Publication Date |
|---|---|
| CN113446304A true CN113446304A (en) | 2021-09-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110711208.4A Pending CN113446304A (en) | 2021-06-25 | 2021-06-25 | Pin connection mechanism and working machine |
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| CN (1) | CN113446304A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1471267A2 (en) * | 2003-04-10 | 2004-10-27 | MBK Maschinenbau Koetke GmbH | Fastening device for removably attaching machine parts onto a shaft of large diameter. |
| CN203067520U (en) * | 2012-12-25 | 2013-07-17 | 三一重工股份有限公司 | Pin roll assembly |
| CN206175428U (en) * | 2016-11-14 | 2017-05-17 | 南阳二机石油装备集团股份有限公司 | Enclosed type axle head locking device |
| CN206309762U (en) * | 2016-12-14 | 2017-07-07 | 广西柳工机械股份有限公司 | Synchronous locking articulated structure |
| CN108286554A (en) * | 2018-02-28 | 2018-07-17 | 湖北力帝机床股份有限公司 | A kind of axis pin and its connection structure and assembly method |
| CN208106935U (en) * | 2018-04-10 | 2018-11-16 | 太重煤机有限公司 | A kind of development machine pin shaft retaining device |
| CN112664531A (en) * | 2020-12-31 | 2021-04-16 | 徐州徐工挖掘机械有限公司 | Welding-free pin shaft and stop device |
-
2021
- 2021-06-25 CN CN202110711208.4A patent/CN113446304A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1471267A2 (en) * | 2003-04-10 | 2004-10-27 | MBK Maschinenbau Koetke GmbH | Fastening device for removably attaching machine parts onto a shaft of large diameter. |
| CN203067520U (en) * | 2012-12-25 | 2013-07-17 | 三一重工股份有限公司 | Pin roll assembly |
| CN206175428U (en) * | 2016-11-14 | 2017-05-17 | 南阳二机石油装备集团股份有限公司 | Enclosed type axle head locking device |
| CN206309762U (en) * | 2016-12-14 | 2017-07-07 | 广西柳工机械股份有限公司 | Synchronous locking articulated structure |
| CN108286554A (en) * | 2018-02-28 | 2018-07-17 | 湖北力帝机床股份有限公司 | A kind of axis pin and its connection structure and assembly method |
| CN208106935U (en) * | 2018-04-10 | 2018-11-16 | 太重煤机有限公司 | A kind of development machine pin shaft retaining device |
| CN112664531A (en) * | 2020-12-31 | 2021-04-16 | 徐州徐工挖掘机械有限公司 | Welding-free pin shaft and stop device |
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Application publication date: 20210928 |