CN111115447B - Fixing device and engineering machinery - Google Patents
Fixing device and engineering machinery Download PDFInfo
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- CN111115447B CN111115447B CN202010072160.2A CN202010072160A CN111115447B CN 111115447 B CN111115447 B CN 111115447B CN 202010072160 A CN202010072160 A CN 202010072160A CN 111115447 B CN111115447 B CN 111115447B
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- 238000010276 construction Methods 0.000 claims description 8
- 230000002349 favourable effect Effects 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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Abstract
The embodiment of the invention provides a fixing device and engineering machinery, and relates to the field of engineering machinery. The fixing device comprises a connecting piece, a first fixing piece, a second fixing piece and a third fixing piece, wherein the first connecting part and the second connecting part are respectively arranged at two opposite ends of the connecting piece, the first fixing piece is connected with the first connecting part and used for fixing the first connecting part, the second fixing piece is connected with the third fixing piece and used for fixing the third fixing piece, the second connecting part stretches into the second fixing piece and is connected with the third fixing piece, the third fixing piece is used for fixing the second connecting part, the connecting piece is used for being connected with a first assembly part, and at least one of the first fixing piece and the second fixing piece is used for being connected with a second assembly part. The fixing device and the engineering machinery can ensure the fixing quality of the connecting position, and are favorable for ensuring the fixing stability, thereby ensuring the service life, the reliability and the use safety.
Description
Technical Field
The invention relates to the field of engineering machinery, in particular to a fixing device and engineering machinery.
Background
Existing engineering machinery equipment, such as grab machines and excavators, are connected with the lug plate and the grab bucket through a pin shaft, the pin shaft is connected with the lug plate, and the grab bucket can rotate relative to the pin shaft and the lug plate. The axial movement and radial rotation of the pin shaft are limited by adopting an anti-rotation crank connection or a mode of combining a limiting block and an ear plate in the existing grab bucket machine, excavator and the like. However, in actual work, the bolts at the baffle or the limiting block are often broken by cargoes during grabbing or excavating work, or the bolts are loosened and then sheared due to long-term mechanical vibration, so that the pin shaft is fixed and fails to rotate axially and radially, and the work fails.
Disclosure of Invention
The invention aims to provide a fixing device and engineering machinery, which have good fixing quality, are beneficial to ensuring the stability of fixing, and further ensure the service life and the use safety.
Embodiments of the invention may be implemented as follows:
In a first aspect, an embodiment provides a fixing device, which is used for fixedly connecting a first assembly part and a second assembly part, the fixing device includes a connecting piece, a first fixing part, a second fixing part and a third fixing part, two opposite ends of the connecting piece are respectively provided with a first connecting part and a second connecting part, the first fixing part is connected with the first connecting part and is used for fixing the first connecting part, the second fixing part is connected with the third fixing part and is used for fixing the third fixing part, the second connecting part stretches into the second fixing part and is connected with the third fixing part, the third fixing part is used for fixing the second connecting part, the connecting piece is used for being connected with the first assembly part, and at least one of the first fixing part and the second fixing part is used for being connected with the second assembly part.
In an alternative embodiment, the first fixing piece is provided with a first fixing surface and a second fixing surface, the first fixing surface forms an included angle with the second fixing surface, and the first connecting portion is provided with a first positioning surface matched with the first fixing surface and a second positioning surface matched with the second fixing surface.
In an alternative embodiment, the first fixing member is provided with a fixing hole, the bottom surface of the fixing hole is provided with the first fixing surface, and the side surface of the fixing hole is provided with the second fixing surface.
In an alternative embodiment, the fixing hole is a stepped hole, the first fixing surface is disposed on the bottom surface of the stepped hole, the second fixing surface is disposed on the side surface of the stepped hole, the first connecting portion is provided with a step portion matched with the stepped hole, the first positioning surface is disposed on the end surface of the step portion, and the second positioning surface is disposed on the side surface of the step portion.
In an alternative embodiment, the second fixing member is provided with a fixing through hole, the third fixing member is accommodated in the fixing through hole and is fixedly connected with the second fixing member, and the connecting member extends into the fixing through hole and is connected with the third fixing member.
In an alternative embodiment, at least one first stop portion is arranged on the side wall of the fixing through hole in a surrounding mode, the third fixing piece is provided with a second stop portion matched with the first stop portion, and the first stop portion and the second stop portion are used for limiting rotation of the third fixing piece relative to the second fixing piece.
In an alternative embodiment, the fixing device further comprises a mounting member, the second fixing member is provided with at least one first mounting hole communicated with the fixing through hole, the third fixing member is provided with a second mounting hole correspondingly matched with the at least one first mounting hole, and the mounting member passes through the first mounting hole and the second mounting hole and is used for fixing the second fixing member and the third fixing member.
In an alternative embodiment, the third fixing member has a first side and a second side opposite to each other, the first side extends into the fixing through hole and is provided with a connecting hole matched with the second connecting portion, the aperture of the connecting hole is smaller than that of the fixing through hole, and the second side is provided with an assembling portion for assembling the third fixing member on the second fixing member.
In an alternative embodiment, the end of the second connecting portion is provided with a step portion, and the step portion sequentially extends into the fixing through hole and the connecting hole and is connected with the connecting hole.
In a second aspect, an embodiment provides a work machine comprising a securing device according to any of the preceding embodiments.
The beneficial effects of the embodiment of the invention include, for example: the connecting piece is provided with first connecting portion and second connecting portion, and wherein first connecting portion is connected with first mounting, and second connecting portion stretches into the second mounting and is fixed in the second mounting through the third mounting. After the fixing is completed, the connecting part can not radially rotate and axially move relative to the first fixing piece, the second fixing piece and the third fixing piece, so that the fixing of the connecting piece and the first fixing piece, the second fixing piece and the third fixing piece is realized. Meanwhile, the first assembly part is connected with the connecting piece, and the second assembly part is connected with at least one of the first fixing piece and the second fixing piece, so that the connection stability of the first assembly part and the second assembly part can be ensured. For example, when the first assembly part rotates relative to the second assembly part, the connecting piece connected with the first assembly part cannot rotate relative to the first fixing piece, the second fixing piece and the third fixing piece under the drive of the first assembly part and is always and stably connected with the first assembly part, so that the connection stability between the first assembly part and the second assembly part is ensured, the service life and the reliability of the connection position of the first assembly part and the second assembly part are improved, and the use safety of engineering machinery can be ensured.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a fixing device according to an embodiment of the present invention;
FIG. 2 is a schematic view of the connector of FIG. 1;
FIG. 3 is a schematic view of the connector of FIG. 2 from another perspective;
FIG. 4 is a schematic view of the connector of FIG. 2 from a further perspective;
FIG. 5 is a schematic view of the first fixing member shown in FIG. 1;
FIG. 6 is a schematic view of the second fixing member shown in FIG. 1;
FIG. 7 is a schematic view of the third fixing member shown in FIG. 1;
FIG. 8 is a schematic view of the third fixing member of FIG. 7 in another view;
fig. 9 is a schematic cross-sectional view of the fastening device of fig. 1.
Icon: 100-fixing device; 110-a connector; 111-a first connection; 1111—a first positioning surface; 1112-a second locating surface; 1113-step; 112-a second connection; 1121-a step; 120-a first fixing member; 121-a first fixing surface; 122-a second fixation surface; 123-fixing holes; 130-a second securing member; 131-fixing through holes; 132—a first stop; 133-a first mounting hole; 140-a third mount; 141-a second stop; 142-a second mounting hole; 143-a first side; 144-second side; 145-connecting holes; 146-fitting portion.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, if the terms "upper", "lower", "inner", "outer", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or the azimuth or the positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present invention and simplifying the description, and it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus it should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, if any, are used merely for distinguishing between descriptions and not for indicating or implying a relative importance.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
Referring to fig. 1, an embodiment of the present invention provides a fixing device 100 for fixedly connecting a first assembly member and a second assembly member, wherein the first assembly member and the second assembly member can rotate relatively and are all components of a construction machine. The fixing device 100 can ensure the fixing quality between the first assembly part and the second assembly part, and is beneficial to ensuring the fixing stability, thereby ensuring the service life and the use safety.
The fixing device 100 may be used in a construction machine for connecting two mutually rotatable parts of the construction machine, namely a first fitting and a second fitting. For example, the construction machine is a grapple machine, an excavator, or the like. Taking a grab bucket machine as an example, the grab bucket and the lug plate of the grab bucket machine can rotate relatively, in the prior art, the grab bucket and the lug plate are connected through a pin shaft, the pin shaft is fixed on the lug plate, and the grab bucket is connected to the pin shaft and can rotate relatively to the pin shaft and the lug plate. The embodiment of the invention can ensure the fixing effect between the lug plate and the grab bucket, avoid the failure of the fixing position or reduce the failure probability, thereby ensuring the service life and the use safety.
In the embodiment of the present invention, the fixing device 100 includes a connecting member 110, a first fixing member 120, a second fixing member 130 and a third fixing member 140, referring to fig. 2, opposite ends of the connecting member 110 are respectively provided with a first connecting portion 111 and a second connecting portion 112, the first fixing member 120 is connected with the first connecting portion 111 for fixing the first connecting portion 111, the second fixing member 130 is connected with the third fixing member 140 for fixing the third fixing member 140, the second connecting portion 112 extends into the second fixing member 130 and is connected with the third fixing member 140, the third fixing member 140 is used for fixing the second connecting portion 112, the connecting member 110 is used for connecting with a first assembly, and at least one of the first fixing member 120 and the second fixing member 130 is used for connecting with a second assembly.
It should be noted that the connecting member 110 is provided with a first connecting portion 111 and a second connecting portion 112, wherein the first connecting portion 111 is connected to the first fixing member 120, and the second connecting portion 112 extends into the second fixing member 130 and is fixed to the second fixing member 130 by the third fixing member 140. After the fixing is completed, the connection part cannot radially rotate and axially move relative to the first fixing member 120, the second fixing member 130 and the third fixing member 140, so that the connection member 110 is fixed to the first fixing member 120, the second fixing member 130 and the third fixing member 140. Meanwhile, the first fitting is connected with the connecting member 110, and the second fitting is connected with at least one of the first fixing member 120 and the second fixing member 130, so that the connection stability of the first fitting and the second fitting can be ensured. For example, when the first assembly member rotates relative to the second assembly member, the connecting member 110 connected with the first assembly member cannot rotate relative to the first fixing member 120, the second fixing member 130 and the third fixing member 140 under the driving of the first assembly member, and is always and stably connected with the first assembly member, so that the connection stability between the first assembly member and the second assembly member is ensured, the service life and the reliability of the connection position of the first assembly member and the second assembly member are improved, and the use safety of engineering machinery can be ensured.
When the fixing device 100 is connected to the first fitting and the second fitting, the connecting member 110 is connected to the first fitting, or the connecting member 110 is integrally formed with the first fitting, or the connecting member 110 is disposed on the first fitting. At least one of the first fixing member 120 and the second fixing member 130 is connected to the second assembly member, alternatively, the first fixing member 120 and the second fixing member 130 are both connected to the second assembly member, and the first fixing member 120 and the second fixing member 130 are both disposed on the second assembly member, that is, the first fixing member 120 and the second fixing member 130 are in an integral structure with the second assembly member, and may be manufactured through an integral molding process.
Further, the securing device 100 may be used to connect the lug plate of the grapple machine to the grapple when applied to the grapple machine. In this case, the first fitting may be disposed on the grab bucket, the second fitting may be disposed on the ear plate, or the first fitting may be the grab bucket, and the second fitting may be the ear plate. That is, the connection member 110 is connected to the grapple, and the first and second fixing members 120 and 130 are connected to the ear plate.
In the case of applying the fixing device 100 to other construction machines, such as an excavator, the above-described arrangement of the ear plate and the grapple applied to the grapple machine may be referred to, and the relatively fixed member is connected to the first fixing member 120 and the second fixing member 130, and the relatively rotatable member is connected to the connecting member 110. Of course, the arrangement may be reversed, i.e., the relatively rotatable member is connected to the first and second fixing members 120 and 130, and the relatively fixed member is connected to the connecting member 110. The embodiment of the present invention is not particularly limited to a specific connection arrangement.
Referring to fig. 3 to 5, in an alternative embodiment, the first fixing member 120 may be provided with a first fixing surface 121 and a second fixing surface 122, where the first fixing surface 121 forms an angle with the second fixing surface 122, and the first connecting portion 111 is provided with a first positioning surface 1111 that is matched with the first fixing surface 121, and a second positioning surface 1112 that is matched with the second fixing surface 122.
It should be appreciated that the first positioning surface 1111 mates with the first fixing surface 121 and the second positioning surface 1112 mates with the second positioning surface 1112, one of which is configured to limit radial rotation of the connector 110 and the other of which is configured to limit axial movement of the connector 110 toward the first fixing member 120.
Further, the first fixing member 120 may be provided with a fixing hole 123, a first fixing surface 121 is provided on a bottom surface of the fixing hole 123, and a second fixing surface 122 is provided on a side surface of the fixing hole 123.
In the solution in which the fixing hole 123 is provided, the first fixing surface 121 is provided on the bottom surface of the fixing hole 123, and the second fixing surface 122 is provided on the side surface of the fixing hole 123, the first fixing surface 121 cooperates with the first positioning surface 1111 to limit the axial movement of the connecting member 110 toward the first fixing member 120; the second fixing surface 122 cooperates with the second positioning surface 1112 to limit radial rotation of the connecting member 110.
Meanwhile, on the connection member 110, the first positioning surface 1111 and the second positioning surface 1112 are disposed corresponding to the first fixing surface 121 and the second fixing surface 122. The first connection portion 111 extends into the fixing hole 123, and the first positioning surface 1111 is engaged with the first fixing surface 121, and the second positioning surface 1112 is engaged with the second fixing surface 122, thereby fixing the first connection portion 111.
Further, the fixing hole 123 may be a stepped hole, a bottom surface of the stepped hole is provided with a first fixing surface 121, a side surface of the stepped hole is provided with a second fixing surface 122, the first connecting portion 111 is provided with a step portion 1113 matched with the stepped hole, an end surface of the step portion 1113 is provided with a first positioning surface 1111, and a side surface of the step portion 1113 is provided with a second positioning surface 1112.
In the above-mentioned scheme of setting the first fixing surface 121 and the second fixing surface 122, it may also be understood that a blind hole is first cast on the first fixing member 120, then a groove is cast on the bottom of the blind hole, one side wall of the groove is provided with the second fixing surface 122, and the bottom wall of the groove is provided with the first fixing surface 121. And the stepped portion 1113 of the first connection portion 111 may be manufactured by turning. Specifically, for example, the blind hole is a cylindrical blind hole, and the groove is a semicircular groove or the like.
Referring to fig. 6, in an alternative embodiment, the second fixing member 130 may be provided with a fixing through hole 131, and the third fixing member 140 is accommodated in the fixing through hole 131 and fixedly connected to the second fixing member 130, and the connecting member 110 extends into the fixing through hole 131 and is connected to the third fixing member 140.
It should be understood that the fixing through hole 131 is used to receive the third fixing member 140 so as to be coupled with the third fixing member 140 after the coupling member 110 is inserted into the fixing through hole 131.
Referring to fig. 7 and 8, further, at least one first stop portion 132 may be disposed around a sidewall of the fixing hole 131, the third fixing member 140 is provided with a second stop portion 141 matching with the first stop portion 132, and the first stop portion 132 and the second stop portion 141 are used together to limit the rotation of the third fixing member 140 relative to the second fixing member 130.
It should be appreciated that the cooperation of the first stop 132 and the second stop 141 can limit the rotation of the third fixing member 140 relative to the second fixing member 130, and the second connecting portion 112 is connected to the third fixing member 140, thereby indirectly limiting the rotation between the second connecting portion 112 and the second fixing member 130, and further limiting the rotation of the connecting member 110. That is, the rotation of the connecting member 110 is limited at both ends of the connecting member 110, which is beneficial to reducing the torque at both ends of the connecting member 110 and ensuring the service life of the connecting member 110.
In this embodiment, the first stopping portion 132 and the second stopping portion 141 are corresponding and matched grooves and protruding structures, and sides of the protrusions and the grooves are used for limiting the rotation of the third fixing member 140 relative to the second fixing member 130. For example, a first stop portion 132 is formed on the inner wall of the fixing through hole 131, and the first stop portion 132 has a groove-like structure, and a protrusion structure is formed at a position where the groove-like structure is not formed; accordingly, the third fixing member 140 is provided with a second stopping portion 141, and the second stopping portion 141 may be formed by a protrusion formed by a groove formed in the third fixing member 140 for accommodating the above-mentioned protrusion structure. The general shape and structure of the first stopper 132 and the second stopper 141 may be referred to fig. 6 and 7.
In an alternative embodiment, the fixing device 100 may further include a mounting member (not shown), the second fixing member 130 is provided with at least one first mounting hole 133 communicating with the fixing through hole 131, the third fixing member 140 is provided with a second mounting hole 142 corresponding to the at least one first mounting hole 133, and the mounting member passes through the first mounting hole 133 and the second mounting hole 142 for fixing the second fixing member 130 and the third fixing member 140.
During assembly, the first mounting hole 133 and the second mounting hole 142 are opposite in position, and the mounting member sequentially extends into the first mounting hole 133 and the second mounting hole 142 and cooperates with the first mounting hole 133 and the second mounting hole 142 to fix the third fixing member 140 to the second fixing member 130. Further, an internal thread may be provided on an inner wall of at least one of the first and second mounting holes 133 and 142, and an external thread provided on the mounting member to be engaged with the internal thread, that is, the mounting member and the first and second mounting holes 133 and 142 may be screw-engaged.
It should be understood that the number of the mounting members, the first mounting holes 133 and the second mounting holes 142 is not limited to one, but may be flexibly set according to a specific scenario, for example, the number of the first mounting holes 133 is three, at this time, the number of the second mounting holes 142 and the mounting members is also corresponding to three, and the positions of the second mounting holes 142 are in one-to-one correspondence with the positions of the first mounting holes 133.
In an alternative embodiment, the third fixing member 140 has a first side 143 and a second side 144 opposite to each other, the first side 143 extends into the fixing hole 131 and is provided with a connection hole 145 cooperating with the second connection portion 112, the connection hole 145 has a smaller aperture than the fixing hole 131, and the second side 144 is provided with an assembling portion 146 for assembling the third fixing member 140 to the second fixing member 130.
It should be appreciated that the third fixing member 140 includes a first side 143 and a second side 144 opposite to each other, wherein the first side 143 extends into the fixing hole 131, and the second side 144 is provided with a fitting portion 146 for fitting the third fixing member 140 to the second fixing member 130.
Alternatively, the fitting 146 may be a polygonal recess, such as a hexagonal recess, to facilitate its threading in and out by a tool, which may be a hex-head wrench or the like.
In an alternative embodiment, the end of the second connection part 112 is provided with a stepped part 1121, and the stepped part 1121 sequentially protrudes into the fixing through hole 131 and the connection hole 145 and is connected with the connection hole 145. The stepped portion 1121 may be screwed or engaged with the connection hole 145.
In an embodiment of the present invention, there is also provided a construction machine including the fixing device 100 according to any one of the foregoing embodiments. The engineering machinery can be an excavator, a grab bucket machine and the like, the fixing device 100 can ensure the connection strength, the use reliability and the service life of the engineering machinery are improved, and the use safety of the engineering machinery is also ensured.
Referring to fig. 1 to 9 in combination, in the embodiment of the invention, the fixing device 100 and the construction machine including the fixing device 100 have the following advantages: the connecting member 110 is provided with a first connecting portion 111 and a second connecting portion 112, wherein the first connecting portion 111 is connected with the first fixing member 120, and the second connecting portion 112 extends into the second fixing member 130 and is fixed to the second fixing member 130 by the third fixing member 140. After the fixing is completed, the connection part cannot radially rotate and axially move relative to the first fixing member 120, the second fixing member 130 and the third fixing member 140, so that the connection member 110 is fixed to the first fixing member 120, the second fixing member 130 and the third fixing member 140. Meanwhile, the first fitting is connected with the connecting member 110, and the second fitting is connected with at least one of the first fixing member 120 and the second fixing member 130, so that the connection stability of the first fitting and the second fitting can be ensured. For example, when the first assembly member rotates relative to the second assembly member, the connecting member 110 connected with the first assembly member cannot rotate relative to the first fixing member 120, the second fixing member 130 and the third fixing member 140 under the driving of the first assembly member, and is always and stably connected with the first assembly member, so that the connection stability between the first assembly member and the second assembly member is ensured, the service life and the reliability of the connection position of the first assembly member and the second assembly member are improved, and the use safety of engineering machinery can be ensured.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present invention should be included in the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (4)
1. The fixing device is used for fixedly connecting a first assembly part and a second assembly part and is characterized by comprising a connecting piece, a first fixing piece, a second fixing piece and a third fixing piece, wherein a first connecting part and a second connecting part are respectively arranged at two opposite ends of the connecting piece, the first fixing piece is connected with the first connecting part and is used for fixing the first connecting part, the second fixing piece is connected with the third fixing piece and is used for fixing the third fixing piece, the second connecting part stretches into the second fixing piece and is connected with the third fixing piece, the third fixing piece is used for fixing the second connecting part, the connecting piece is used for being connected with the first assembly part, and at least one of the first fixing piece and the second fixing piece is used for being connected with the second assembly part;
The first fixing piece is provided with a first fixing surface and a second fixing surface, the first fixing surface and the second fixing surface form an included angle, and the first connecting part is provided with a first positioning surface matched with the first fixing surface and a second positioning surface matched with the second fixing surface;
The first fixing piece is provided with a fixing hole, the bottom surface of the fixing hole is provided with the first fixing surface, and the side surface of the fixing hole is provided with the second fixing surface;
The fixing hole is a stepped hole, the first fixing surface is arranged on the bottom surface of the stepped hole, the second fixing surface is arranged on the side surface of the stepped hole, the first connecting part is provided with a step part matched with the stepped hole, the end surface of the step part is provided with the first positioning surface, and the second positioning surface is arranged on the side surface of the step part;
The second fixing piece is provided with a fixing through hole, the third fixing piece is accommodated in the fixing through hole and fixedly connected with the second fixing piece, and the connecting piece extends into the fixing through hole and is connected with the third fixing piece;
The side wall of the fixing through hole is provided with at least one first stop part in a ring manner, the third fixing piece is provided with a second stop part matched with the first stop part, and the first stop part and the second stop part are jointly used for limiting the third fixing piece to rotate relative to the second fixing piece;
the fixing device further comprises a mounting piece, the second fixing piece is provided with at least one first mounting hole communicated with the fixing through hole, the third fixing piece is provided with a second mounting hole correspondingly matched with the at least one first mounting hole, and the mounting piece penetrates through the first mounting hole and the second mounting hole and is used for fixing the second fixing piece and the third fixing piece.
2. The fixing device according to claim 1, wherein the third fixing member has a first side surface and a second side surface opposite to each other, the first side surface extends into the fixing through hole and is provided with a connecting hole matched with the second connecting portion, the aperture of the connecting hole is smaller than that of the fixing through hole, and the second side surface is provided with an assembling portion for assembling the third fixing member to the second fixing member.
3. The fixing device according to claim 2, wherein an end portion of the second connecting portion is provided with a stepped portion which sequentially extends into the fixing through hole and the connecting hole and is connected with the connecting hole.
4. A construction machine comprising a fastening device according to any one of claims 1-3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010072160.2A CN111115447B (en) | 2020-01-21 | 2020-01-21 | Fixing device and engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010072160.2A CN111115447B (en) | 2020-01-21 | 2020-01-21 | Fixing device and engineering machinery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111115447A CN111115447A (en) | 2020-05-08 |
| CN111115447B true CN111115447B (en) | 2024-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010072160.2A Active CN111115447B (en) | 2020-01-21 | 2020-01-21 | Fixing device and engineering machinery |
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| CN (1) | CN111115447B (en) |
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| DE102017218140A1 (en) * | 2017-10-11 | 2019-04-11 | Hawe Hydraulik Se | A printing system component, a tool for disassembling a printing system component, a printing system with a printing system component, and a method for disassembling a printing system component |
| CN208306891U (en) * | 2018-06-01 | 2019-01-01 | 贵州省铜仁狂野车业制造有限公司 | Motorcycle front-wheel structure and motorcycle |
| CN211545709U (en) * | 2020-01-21 | 2020-09-22 | 四川大学 | Fixing device and engineering machinery |
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| CN111115447A (en) | 2020-05-08 |
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