CN210176339U - Crane jib mounting structure and crane - Google Patents
Crane jib mounting structure and crane Download PDFInfo
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- CN210176339U CN210176339U CN201920957621.7U CN201920957621U CN210176339U CN 210176339 U CN210176339 U CN 210176339U CN 201920957621 U CN201920957621 U CN 201920957621U CN 210176339 U CN210176339 U CN 210176339U
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- bush
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- crane boom
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Abstract
The application discloses hoist davit mounting structure and hoist, hoist davit mounting structure includes: the suspension arm is provided with a suspension arm shaft sleeve, and the suspension arm shaft sleeve is provided with a limiting structure protruding out of the inner wall; the bushing is arranged in the boom shaft sleeve, a limiting notch which is opened along the axial direction of the bushing is arranged at the first end of the bushing, and the limiting structure is inserted into the limiting notch. The crane boom mounting structure can effectively prevent the bushing from axially moving and circumferentially rotating, and is low in processing difficulty, high in assembly efficiency and low in processing cost.
Description
Technical Field
The application belongs to the technical field of vehicle manufacturing, and particularly relates to a crane boom mounting structure and a crane.
Background
The crane boom is arranged on the rotary table through the mounting shaft, and the crane boom can rotate relative to the mounting shaft in the working process, so that the mounting shaft is prevented from being abraded, a bushing needs to be arranged between the crane boom and the mounting shaft, and the hardness of the bushing is smaller than that of the mounting shaft, so that the mounting shaft cannot be abraded.
In the related art, the bushing mainly has the following two installation modes:
1) the bush is in transition fit with the shaft sleeve at the tail of the suspension arm, after the bush is knocked into the suspension arm shaft sleeve, a threaded hole is drilled in a gap between the bush and the suspension arm shaft sleeve, and a screw is arranged in the threaded hole, so that the bush is prevented from rotating and axially moving in the suspension arm shaft sleeve. However, the assembly method needs to drill the threaded hole after the bushing is installed, and the assembly efficiency is low.
2) One end of the bush is provided with a flanging structure, the flanging structure is used for preventing the bush from moving towards the inner side, the bush is in interference fit with the shaft sleeve at the tail of the suspension arm, the assembly is carried out in a press fitting or cold fitting mode during assembly, the assembly difficulty is high, and the requirement on process equipment is high.
Disclosure of Invention
The present application is directed to solving at least one of the problems in the prior art.
The application provides a hoist davit mounting structure, includes: the suspension arm is provided with a suspension arm shaft sleeve, and the suspension arm shaft sleeve is provided with a limiting structure protruding out of the inner wall; the bushing is arranged in the boom shaft sleeve, a limiting notch which is opened along the axial direction of the bushing is arranged at the first end of the bushing, and the limiting structure is inserted into the limiting notch.
The crane jib mounting structure of the embodiment of the application can effectively prevent the bushing from axially moving and circumferentially rotating, and has the advantages of low processing difficulty, high assembly efficiency and low processing cost.
According to this application one embodiment's hoist davit mounting structure, still includes: the rotary table is provided with a rotary table shaft sleeve; the installation axle, the bush with the revolving stage axle sleeve is all established install the off-axial, just the first end of bush is located deviating from of bush the one end of revolving stage axle sleeve.
According to the crane boom mounting structure provided by the embodiment of the application, the second end of the bushing is provided with the centering mark which is opposite to the limiting notch along the axial direction of the bushing.
According to the crane boom mounting structure of one embodiment of the present application, the centering mark is a centering notch having the same shape as the limiting notch.
According to an embodiment of the application, the outer circumferential wall of the first end of the bushing is provided with a chamfer.
According to an embodiment of the crane boom mounting structure of the present application, the limiting notch extends beyond the chamfer.
According to the crane jib mounting structure provided by the embodiment of the application, the limiting notch is U-shaped; or the bushing is in transition fit with the suspension arm shaft sleeve.
According to this application one embodiment's hoist davit mounting structure, the periphery wall of davit axle sleeve is equipped with mounting surface at first end, mounting surface is equipped with the mounting hole that runs through the periphery wall, limit structure install in mounting surface just runs through the mounting hole.
According to an embodiment of the application, the crane jib mounting structure, the mounting hole is the screw hole, limit structure includes screw and gasket, the screw with screw hole threaded connection, just the gasket clamp is established the head of screw with between the mounting plane.
The application also provides a crane, which is characterized by comprising the crane boom mounting structure.
The crane and the crane boom mounting structure have the same advantages compared with the prior art, and the description is omitted.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic structural view of a crane boom mounting structure according to an embodiment of the present application;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is a schematic structural view of a bushing in a crane boom mounting structure of an embodiment of the present application;
fig. 4 is a schematic structural diagram of a limiting structure mounted on a boom shaft sleeve in the crane boom mounting structure according to the embodiment of the application.
Reference numerals:
the rotating table 1, the rotating table shaft sleeve 11,
the mounting shaft 2 is mounted on the base,
a boom 3, a boom sleeve 31, a mounting plane 32,
bushing 4, limit notches 41, centering marks 42, chamfer 43,
a limiting structure 5, a screw 51 and a gasket 52.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
A crane boom mounting structure according to an embodiment of the present application is described below with reference to fig. 1-4.
Unless otherwise specified, the front-rear direction in the present application is the longitudinal direction of the vehicle, i.e., the X direction; the left and right directions are the transverse direction of the vehicle, namely the Y direction; the up-down direction is the vertical direction of the vehicle, i.e., the Z direction.
As shown in fig. 1, the crane boom mounting structure of the present application comprises a boom 3 and a liner 4.
The suspension arm 3 is provided with a suspension arm shaft sleeve 31, the suspension arm shaft sleeve 31 can be arranged at the tail of the suspension arm 3, the suspension arm shaft sleeve 31 is of an annular hollow structure, the suspension arm shaft sleeve 31 defines a suspension arm shaft sleeve hole, as shown in fig. 4, the suspension arm shaft sleeve 31 is provided with a limiting structure 5 protruding out of the inner wall, and the limiting structure 5 extends into the suspension arm shaft sleeve hole.
The bush 4 is arranged in the suspension arm shaft sleeve 31, the bush 4 is of an annular hollow structure, such as a round pipe shape, the bush 4 can be in transition fit with the suspension arm shaft sleeve 31, and therefore the bush 4 is easy to assemble in the suspension arm shaft sleeve 31, and installation difficulty can be reduced compared with an interference fit structure. The boom sleeve 31 is sleeved outside the bushing 4, and the hardness of the bushing 4 is less than that of the boom sleeve 31 to prevent the boom sleeve 31 from wearing the mounting shaft 2, in an actual implementation, the bushing 4 may be made of a copper material, for example, the bushing 4 may be a copper sleeve.
As shown in fig. 3, the first end (right end in fig. 3) of the bush 4 is provided with a limit notch 41 opened in the axial direction of the bush 4, and as shown in fig. 1 and 2, the limit structure 5 is inserted into the limit notch 41 when the bush 4 is fitted into the boom sleeve 31. Thus, when the limit structure 5 is pressed against the axial bottom wall of the limit notch 41, the limit structure 5 can limit the axial movement of the bushing 4 and also limit the rotation of the bushing 4.
The above-described function is achieved very simply by fitting the bush 4 into the boom sleeve 31, without the need for additional fitting procedures.
The crane jib mounting structure of the embodiment of the application can effectively prevent the bushing 4 from axially moving and circumferentially rotating, and has the advantages of low processing difficulty, high assembly efficiency and low processing cost.
As shown in fig. 1 and 2, the crane boom mounting structure of the present application further includes: a turntable 1 and a mounting shaft 2.
Wherein, revolving stage 1 is equipped with revolving stage axle sleeve 11, and revolving stage axle sleeve 11 is annular hollow structure, and bushing 4 and revolving stage axle sleeve 11 are all established outside installation axle 2, and bushing 4's hardness is less than the hardness of installation axle 2, and bushing 4's first end is located bushing 4's the one end that deviates from revolving stage axle sleeve 11.
It will be appreciated that the first end of the boom sleeve 31 corresponds to the first end of the bushing 4, the second end of the boom sleeve 31 corresponds to the second end of the bushing 4, the bushing 4 is assembled into the boom sleeve 31 from the second end of the boom sleeve 31 toward the first end, the turntable sleeve 11 can be disposed adjacent to the second end of the boom sleeve 31, the turntable sleeve 11 can prevent the bushing 4 from axially protruding from the second end of the boom sleeve 31, and the bushing 4 can be prevented from axially protruding toward the first end of the boom sleeve 31 by the limiting structure 5, so that the axial bidirectional limiting of the bushing 4 can be realized.
The rotary table shaft sleeve 11 may be fixedly connected with the mounting shaft 2, for example, the rotary table shaft sleeve 11 may be in interference fit with the mounting shaft 2; the installation shaft 2 is in running fit with the bush 4, so that when the suspension arm 3 rotates around the installation shaft 2, the posture adjustment can be realized.
In a practical implementation, as shown in fig. 1, there are two turntable sleeves 11, two turntable sleeves 11 are disposed at a distance from each other in the transverse direction, two boom sleeves 31 are disposed at a distance from each other in the transverse direction, the two boom sleeves 31 are disposed at the transverse inner sides of the two turntable sleeves 11, respectively, and the limiting structure 5 is disposed at the transverse inner side of the boom sleeve 31. The double-pivot structure makes the mounting structure of the suspension arm 3 more stable.
In some embodiments, as shown in fig. 3, the second end (left end in fig. 3) of the bushing 4 is provided with a centering mark 42 opposite to the limit notch 41 in the axial direction of the bushing 4. In this way, when inserting the bushing 4 into the boom sleeve 31, it can be determined whether the inner stop notch 41 is centered, i.e. whether the stop notch 41 is aligned with the stop formation 5, by observing the centering mark 42 located on the outer side (second end).
In actual implementation, the centering mark 42 is a centering notch with the same shape as the limiting notch 41, so that the position of the limiting notch 41 can be judged conveniently through the centering mark 42, as shown in fig. 3, the limiting notch 41 is U-shaped, the centering notch is U-shaped, the limiting notch 41 comprises a semicircular section and a rectangular section connected with the semicircular section, and the centering notch comprises a semicircular section and a rectangular section connected with the semicircular section.
In some embodiments, as shown in fig. 3, the outer peripheral wall of the first end of the bushing 4 is provided with a chamfer 43. It will be appreciated that the bushing 4 is inserted into the boom sleeve 31 from a first end, and that the wall thickness of the bushing 4 at the chamfer 43 becomes progressively thicker from the first end inwardly, which chamfer 43 can serve a guiding function and can help to more easily fit the bushing 4 into the boom sleeve 31.
In a practical implementation, the chamfer 43 may be a conical surface, with the retention notch 41 extending beyond the chamfer 43. The limiting notch 41 mainly has the effect that the tail end is stressed to limit, after the limiting notch 41 extends to exceed the chamfer 43, the tail end of the limiting notch 41 is located in an area with thicker wall thickness, so that the strength and rigidity of the position are higher, and the position of the limiting notch 41 can be prevented from being damaged.
In some embodiments, as shown in fig. 4, the peripheral wall of the boom sleeve 31 is provided with a mounting plane 32 at a first end, the mounting plane 32 is provided with a mounting hole penetrating through the peripheral wall, the mounting plane 32 can be machined by milling, the mounting hole can be machined by simple drilling, the limiting structure 5 is mounted on the mounting plane 32, and the limiting structure 5 penetrates through the mounting hole. The mounting of the limiting structure 5 is thus stable.
In an actual implementation, as shown in fig. 2 and 4, the mounting hole is a threaded hole, the limiting structure 5 includes a screw 51 and a washer 52, the screw 51 is in threaded connection with the threaded hole, the washer 52 is sandwiched between the head of the screw 51 and the mounting plane 32, and the washer 52 may be a spring washer.
To sum up, in the crane jib mounting structure of the embodiment of the application, the bushing 4 is in transition fit with the jib shaft sleeve 31 at the tail of the jib 3, and the assembly difficulty of the bushing and the jib shaft sleeve is low. The bush 4 is provided with notches at both ends and a chamfer 43 at one end, and the end of the bush is arranged in the suspension arm shaft sleeve 31 through the chamfer 43 during assembly. During assembly, the centering notches on the outside can be used to see whether the inner limiting notch 41 is centered. The corresponding boom sleeve 31 is milled with a mounting plane 32 and is provided with a threaded hole in a centered position and with a screw 51 and a spring washer 52, and after the bushing 4 is inserted, the inner limiting notch 41 is inserted right into the limiting screw 51 and aligned therewith. Through the cooperation of the limiting screw 51 and the limiting notch 41 of the bushing 4, the axial movement of the bushing 4 is limited, the rotation of the bushing 4 can be limited, the function is realized, the assembly is simple and convenient, the efficiency is improved, and the processing cost is reduced. According to the crane boom mounting structure, a mounting mode of a set screw and a bushing in interference fit is eliminated, the processing difficulty is reduced, the assembly efficiency is improved, and the assembly equipment is reduced.
The application also discloses a crane.
The crane of the present application has the crane boom mounting structure of any of the above embodiments. The crane has the advantages of convenient installation of the suspension arm 3 and low assembly cost.
In the description herein, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means 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 the application. In this specification, the schematic representations of the terms used above do not necessarily 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.
While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A crane boom mounting structure, comprising:
the suspension arm (3), the suspension arm (3) is provided with a suspension arm shaft sleeve (31), and the suspension arm shaft sleeve (31) is provided with a limiting structure (5) protruding out of the inner wall;
bush (4), establish bush (4) in davit axle sleeve (31), just the first end of bush (4) is equipped with the edge the open spacing breach (41) of axial of bush (4), limit structure (5) insert spacing breach (41).
2. The crane boom mounting structure of claim 1, further comprising:
the rotary table (1), the said rotary table (1) has shaft sleeves of the rotary table (11);
installation axle (2), bush (4) with revolving stage axle sleeve (11) all overlap and establish outside installation axle (2), just the first end of bush (4) is located deviating from of bush (4) the one end of revolving stage axle sleeve (11).
3. Crane boom mounting arrangement according to claim 1 or 2, characterized in that the second end of the bushing (4) is provided with a centering mark (42) directly opposite the limit indentation (41) in the axial direction of the bushing (4).
4. The crane boom mounting structure of claim 3, wherein the centering mark (42) is a centering notch of the same shape as the limit notch (41).
5. Crane boom mounting arrangement according to claim 1 or 2, characterized in that the peripheral wall of the first end of the bushing (4) is provided with a chamfer (43).
6. The crane boom mounting structure of claim 5, wherein the limit notch (41) extends beyond the chamfer (43).
7. Crane boom mounting structure according to claim 1 or 2, wherein the limiting notch (41) is U-shaped;
or the bushing (4) is in transition fit with the suspension arm shaft sleeve (31).
8. Crane boom mounting structure according to claim 1 or 2, characterized in that the peripheral wall of the boom sleeve (31) is provided with a mounting plane (32) at a first end, that the mounting plane (32) is provided with mounting holes through the peripheral wall, and that the stop structure (5) is mounted to the mounting plane (32) and through the mounting holes.
9. The crane boom mounting structure of claim 8, wherein the mounting hole is a threaded hole, the limiting structure (5) comprises a screw (51) and a washer (52), the screw (51) is in threaded connection with the threaded hole, and the washer (52) is sandwiched between the head of the screw (51) and the mounting plane (32).
10. A crane having a crane boom mounting structure as claimed in any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920957621.7U CN210176339U (en) | 2019-06-24 | 2019-06-24 | Crane jib mounting structure and crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920957621.7U CN210176339U (en) | 2019-06-24 | 2019-06-24 | Crane jib mounting structure and crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210176339U true CN210176339U (en) | 2020-03-24 |
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ID=69838673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920957621.7U Active CN210176339U (en) | 2019-06-24 | 2019-06-24 | Crane jib mounting structure and crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210176339U (en) |
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- 2019-06-24 CN CN201920957621.7U patent/CN210176339U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200703 Address after: No.202 Xuanfu street, Xuanhua District, Zhangjiakou, Hebei Province Patentee after: Hebei Leisa Heavy Construction Machinery Co., Ltd Address before: 102206 Changping District City, Shahe, Sha Yang Road, Beijing Patentee before: BEIQI FOTON MOTOR Co.,Ltd. |