CN220015829U - Cantilever crane shaft sleeve structure and cantilever crane roof beam - Google Patents
Cantilever crane shaft sleeve structure and cantilever crane roof beam Download PDFInfo
- Publication number
- CN220015829U CN220015829U CN202320523419.XU CN202320523419U CN220015829U CN 220015829 U CN220015829 U CN 220015829U CN 202320523419 U CN202320523419 U CN 202320523419U CN 220015829 U CN220015829 U CN 220015829U
- Authority
- CN
- China
- Prior art keywords
- shaft sleeve
- special
- boom
- sleeve
- shaped
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000002131 composite material Substances 0.000 claims description 9
- 239000000835 fiber Substances 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 206010066054 Dysmorphism Diseases 0.000 claims 3
- 238000003466 welding Methods 0.000 description 11
- 239000003566 sealing material Substances 0.000 description 9
- 229910000831 Steel Inorganic materials 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 229920000049 Carbon (fiber) Polymers 0.000 description 3
- 239000004917 carbon fiber Substances 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Landscapes
- Jib Cranes (AREA)
Abstract
The utility model relates to the field of engineering machinery, and particularly discloses an arm support shaft sleeve structure and an arm support beam, wherein an outer flange part of the special-shaped shaft sleeve penetrates through an arm support shaft hole in the side wall of the arm support beam and protrudes out of the outer side wall of the arm support beam, and the outer contour of the outer flange part is in a shape different from a circular shape so as to clamp and fixedly connect the special-shaped shaft sleeve with the arm support shaft hole. The cantilever crane shaft sleeve structure can prevent the shaft sleeve from wearing the shaft hole along with the rotation of the pin shaft in the cantilever crane shaft hole.
Description
Technical Field
The utility model relates to the field of engineering machinery, in particular to an arm support shaft sleeve structure and an arm support beam.
Background
The arm frame beam is an important bearing structural member of engineering equipment, the performance of the arm frame beam determines the technical level of the whole crane to a great extent, at present, the aim of light weight of the arm frame beam is mainly achieved by adopting two modes, the first mode is to manufacture the arm frame beam by adopting a high-strength steel material, however, the weight reduction effect of the arm frame beam by adopting the high-strength steel material is extremely limited, the current light weight requirement cannot be met, the second mode is to manufacture the arm frame beam by adopting a fiber composite material, and the fiber composite material has the advantages of high specific strength, high specific modulus, good fatigue resistance, good breakage safety, good damping and vibration reduction performance, strong designability and the like, so that the effect of the arm frame beam in light weight design and manufacture of the arm frame beam is obvious, and therefore, the arm frame beam manufactured by adopting the fiber composite material has become the main stream direction for achieving light weight.
However, the fiber composite material has the problems of poor wear resistance, incapability of welding with a metal shaft sleeve and the like, so that when the arm support Liang Zitai changes along with working conditions, the shaft sleeve rotates in an arm support shaft hole along with a pin shaft, the shaft hole is worn, the hole diameter of the shaft hole is larger and larger, the shaft sleeve is connected with the shaft hole to loosen, and the service life of the arm support beam is influenced.
In view of the foregoing, it is desirable to provide an arm support shaft sleeve structure to solve or overcome the above-mentioned technical problems.
Disclosure of Invention
The technical problem to be solved by the utility model is to provide the cantilever crane shaft sleeve structure, which can prevent the shaft sleeve from wearing the shaft hole along with the rotation of the pin shaft in the cantilever crane shaft hole.
The utility model further aims to solve the technical problem of providing the cantilever crane beam, which can prevent the shaft sleeve from wearing the shaft hole along with the rotation of the pin shaft in the cantilever crane shaft hole.
In order to solve the technical problems, the utility model provides an arm support shaft sleeve structure, which comprises a special-shaped shaft sleeve, wherein an outer protruding part of the special-shaped shaft sleeve penetrates through an arm support shaft hole in the side wall of an arm support beam and protrudes out of the outer side wall of the arm support beam, and the outer outline of the outer protruding part is in a shape different from a circular shape so as to clamp and fixedly connect the special-shaped shaft sleeve with the arm support shaft hole.
Preferably, the special-shaped shaft sleeve further comprises a shaft sleeve connecting ring, wherein the outer protruding portion of the special-shaped shaft sleeve penetrates through a shaft hole of the arm support on the side wall of the arm support beam, and the shaft sleeve connecting ring is sleeved on the outer circumferential surface of the shaft sleeve protruding out of the outer side wall of the arm support beam so as to limit the special-shaped shaft sleeve.
Preferably, the shaft sleeve connecting ring is welded with the special-shaped shaft sleeve.
Preferably, the special-shaped shaft sleeve and the shaft sleeve connecting ring are alloy pieces.
Preferably, the inner hole of the shaft sleeve connecting ring and the outer contour of the outer convex part of the special-shaped shaft sleeve have the same shape.
Preferably, the special-shaped shaft sleeve comprises a flange end part and an outer protruding part which are connected, and an inner hole of the special-shaped shaft sleeve is circular.
Preferably, the outer contour of the outer flange of the special-shaped shaft sleeve is elliptical, oval or polygonal.
The utility model further provides an arm support beam, which is provided with the arm support shaft sleeve structure in any one of the technical schemes, and the arm support beam is a fiber composite structural member.
Preferably, a lining plate which is in fit connection with the special-shaped shaft sleeve is arranged in the side wall of the arm frame beam, and the lining plate is a metal piece.
Preferably, at least two pieces of the inner lining plates are installed in the side walls of the arm frame beams.
Preferably, the special-shaped shaft sleeve and the arm support shaft hole are coaxially arranged.
Through the technical scheme, the utility model has the following beneficial effects:
the cantilever crane shaft sleeve structure comprises the special-shaped shaft sleeve, the special-shaped shaft sleeve can transmit the load born by the cantilever crane to the adjacent cantilever crane through the pin shaft, the outer protruding part of the special-shaped shaft sleeve penetrates through the cantilever crane shaft hole on the side wall of the cantilever crane and protrudes out of the outer side wall of the cantilever crane, and the outer outline of the outer protruding part is in a shape different from a circular shape, so that the special-shaped shaft sleeve and the cantilever crane shaft hole cannot rotate relatively, and the shaft sleeve is prevented from wearing the shaft hole along with the rotation of the pin shaft in the cantilever crane shaft hole.
Drawings
FIG. 1 is a schematic diagram of the whole boom of the boom sleeve structure of the present utility model;
FIG. 2 is a cross-sectional view of a boom beam of the boom bushing structure of the present utility model;
FIG. 3 is a schematic view of a boom shaft hole of the boom sleeve structure of the present utility model;
FIG. 4 is a top view of a sleeve of the boom sleeve structure of the present utility model;
FIG. 5 is a side view of a bushing of the boom bushing structure of the present utility model;
FIG. 6 is a perspective view of a sleeve of the boom sleeve construction of the present utility model;
FIG. 7 is a top view of a bushing interface ring of the boom bushing structure of the present utility model;
FIG. 8 is a side view of a bushing interface ring of the boom bushing structure of the present utility model;
fig. 9 is a perspective view of a sleeve connection ring of the boom sleeve structure of the present utility model.
Description of the reference numerals
1. An arm rest beam; 2. an inner liner; 3. a shaft sleeve connecting ring; 4. a special-shaped shaft sleeve; 5. welding seams; 6. a sealing material; 7. an arm support shaft hole; 8. a flange end; 9. an outer flange.
Detailed Description
The following describes specific embodiments of the present utility model in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the utility model, are not intended to limit the utility model.
It should be noted first that, in the following description, some directional terms are used to clearly illustrate the technical solution of the present utility model, only for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; either directly or indirectly via an intermediate medium, or in communication with each other or in interaction with each other. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
The utility model provides a cantilever crane shaft sleeve structure, which is shown in fig. 1 to 9, and comprises a special-shaped shaft sleeve 4, wherein an outer convex part 9 of the special-shaped shaft sleeve 4 penetrates through a cantilever crane shaft hole 7 on the side wall of a cantilever crane beam 1, and the outer contour of the special-shaped shaft sleeve 4 protrudes out of the outer side wall of the cantilever crane beam 1, so that the special-shaped shaft sleeve 4 is fixedly connected with the cantilever crane shaft hole 7 in a clamping way, and the shaft hole is prevented from being worn due to the rotation of the shaft sleeve along with a pin shaft in the cantilever crane shaft hole.
Further, the special-shaped shaft sleeve comprises a shaft sleeve connecting ring 3, an outer protruding portion 9 of the special-shaped shaft sleeve 4 penetrates through a shaft hole 7 of the arm support on the side wall of the arm support beam 1, the shaft sleeve outer peripheral surface protruding out of the outer side wall of the arm support beam 1 is sleeved with the shaft sleeve connecting ring 3, and the shaft sleeve connecting ring 3 fixes the special-shaped shaft sleeve 4 on the shaft hole 7 of the arm support on the side wall of the arm support beam 1.
It should be noted that, the cantilever crane shaft sleeve structure of the utility model can be applied to a specific cantilever crane, the cantilever crane shaft sleeve structure comprises a special-shaped shaft sleeve 4 and a shaft sleeve connecting ring 3, the special-shaped shaft sleeve 4 penetrates through the cantilever crane shaft hole 7 on the side wall of the cantilever crane beam 1, the shape of the cantilever crane shaft hole 7 can be oval, waist circle or polygon and other special-shaped structures, preferably oval, the cantilever crane shaft hole 7 needs to ensure stability no matter what shape is adopted, the cantilever crane shaft hole 7 and the special-shaped shaft sleeve 4 adopt interference fit, thus after assembly, the centering performance is good, the bearing capacity is high, the impact resistance is good, the stability of the working condition of the cantilever crane beam 1 is further ensured, if the clearance between the cantilever crane shaft hole 7 and the special-shaped shaft sleeve 4 is too large after assembly, the special-shaped shaft sleeve 4 rotates in the cantilever crane shaft hole 7 along with a pin shaft, the cantilever crane shaft hole 7 is worn, the aperture of the cantilever crane shaft hole 7 is larger and larger, the special-shaped shaft sleeve 4 is connected with the cantilever crane shaft hole 7, the service life of the cantilever crane beam 1 is directly influenced, the special-shaped shaft sleeve connecting ring 3 is sleeved on the outer peripheral surface of the outer side wall of the cantilever crane beam 1, the outer contour of the special-shaped shaft sleeve 4 is easy to be oval, the inner hole can be the oval, the bearing performance of the special-shaped shaft sleeve 4 is easy to be matched with the cantilever crane beam 4, the special-shaped shaft sleeve 4 is preferably easy to move along the axial direction 4 is limited, and the special-shaped shaft sleeve 4 is easy to move along the special-shaped shaft sleeve 4 is easy to be matched with the special-shaped shaft sleeve 4, and the special-shaped shaft sleeve 4 is easy to move, and the special-shaped shaft sleeve 4 is easy to be matched with the special-shaped shaft 4 is on the axle 4. Wherein, the inner hole of the special-shaped shaft sleeve 4 is circular, so that the pin shaft is conveniently inserted into the special-shaped shaft sleeve 4 to connect the adjacent cantilever crane beams 1.
Further, the shaft sleeve connecting ring 3 is welded with the special-shaped shaft sleeve 4. It should be noted that, the special-shaped shaft sleeve 4 and the shaft sleeve connecting ring 3 are connected in a welding mode with low heat input, the stability of connection between the shaft sleeve connecting ring 3 and the special-shaped shaft sleeve 4 is ensured, the welding mode is relatively convenient, the rigidity of connection is high, the integrity is relatively good, because the arm frame beam 1 is used as an important bearing structural member of engineering equipment, most of the work is outdoor, the working condition is relatively poor, if the connection between the shaft sleeve connecting ring 3 and the special-shaped shaft sleeve 4 is unstable, on the one hand, the special-shaped shaft sleeve 4 is axially displaced, on the other hand, the pin rolls shake in the special-shaped shaft sleeve 4, the arm frame beam 1 cannot transfer the borne load to the adjacent arm frame through the pin rolls, the working performance of the arm frame beam 1 is directly influenced, during welding, the condition such as full welding is carried out along the annular part where the shaft sleeve connecting ring 3 and the special-shaped shaft sleeve 4 are contacted, the dead welding cannot occur, the condition such as miss welding is not carried out, after the welding is finished, the angle ruler and the radiation detector are used for checking the weld joint 5, the position, the penetration and the width of the designed requirement is ensured, on the condition that the weld joint 5 is reached, on the condition is required, on the condition that the connection between the shaft sleeve connecting ring 3 and the special-shaped shaft sleeve 4 is not limited by the corresponding mode, the connection mode can be checked, and the corresponding operation mode is also can be verified in real time, and the real-time, and the abnormal condition is detected, and the work is detected.
Further, the special-shaped shaft sleeve 4 and the shaft sleeve connecting ring 3 are alloy pieces. It should be noted that, the materials of the special-shaped shaft sleeve 4 and the shaft sleeve connecting ring 3 may be high-strength steel, aluminum alloy, magnesium alloy or titanium alloy, preferably high-strength steel, the specification, the size and other parameters of the special-shaped shaft sleeve 4 and the shaft sleeve connecting ring 3 are determined specifically according to the design, the outer contour of the outer flange 9 of the special-shaped shaft sleeve 4 is milled into an oval, waistline, polygonal and other special-shaped structure, preferably an oval, the specific shape of the outer contour of the outer flange 9 of the special-shaped shaft sleeve 4 needs to be consistent with the shape of the inner hole of the shaft sleeve connecting ring 3, the size of the long axis of the oval outer flange 9 is 50mm-200mm, the size of the long axis of the oval is determined by engineering design, and the stress direction, the stress size and the matching condition between the arm support and the shaft hole 7 of the special-shaped shaft sleeve 4 need to be considered during design.
As a relatively preferred embodiment of the boom bushing structure, referring to fig. 1 to 9, there is provided a boom bushing structure, which comprises a special-shaped bushing 4, wherein the bushing connecting ring 3 and the special-shaped bushing 4 are directly connected by welding, the special-shaped bushing 4 and the bushing connecting ring 3 are made of high-strength steel, the outer contour of an outer flange 9 of the special-shaped bushing 4 is oval, the size of the major axis of the oval is 50mm-200mm, the thickness of a flange end 8 of the special-shaped bushing 4 is 5mm-30mm, the length of the outer flange 9 of the special-shaped bushing 4 is 30mm-100mm, the special-shaped bushing 4 penetrates through a boom shaft hole 7 on the side wall of the boom beam 1, the boom shaft hole 7 is oval, interference fit is adopted between the boom shaft hole 7 and the special-shaped bushing 4, the outer contour of the bushing connecting ring 3 is round, the inner hole is oval, the bushing connecting ring 3 and the special-shaped bushing 4 are connected in a matched manner, and the special-shaped bushing 4 can be fixed on the boom beam 1, thereby limiting the movement of the special-shaped bushing 4 along the axial direction. The specific assembly process of the special-shaped shaft sleeve 4 and the shaft sleeve connecting ring 3 is that firstly, the special-shaped shaft sleeve 4 is assembled outwards from the inner side of the cantilever crane beam 1 through the cantilever crane shaft hole 7, the special-shaped shaft sleeve 4 is tightly attached to the inner surface of the cantilever crane beam 1, then, one end of the shaft sleeve connecting ring 3 is tightly attached to the outer surface of the cantilever crane beam 1, and the other end is connected with the outer contour of the outer convex part 9 of the special-shaped shaft sleeve 4 through welding, so that the problem of easy abrasion caused by the rotation of the special-shaped shaft sleeve 4 in the cantilever crane shaft hole 7 on the cantilever crane beam 1 can be solved through the cooperation between the special-shaped shaft sleeve 4 and the cantilever crane shaft hole 7, and the service life of the cantilever crane shaft hole 7 is obviously prolonged.
In addition, on the basis of the cantilever crane shaft sleeve structure, the utility model also provides a cantilever crane beam which comprises the cantilever crane shaft sleeve structure, and the cantilever crane beam 1 is a fiber composite structural member.
It should be noted that, the arm frame beam 1 is a fiber composite structural member, the fiber composite material here can be glass fiber, carbon fiber or aramid fiber, etc., preferably carbon fiber, first, need to scribe the arm frame beam 1, in the arm frame shaft hole 7 position of the arm frame beam 1, adopt the spiral milling hole processing mode, process the arm frame shaft hole 7 into elliptical holes, kidney-shaped holes or polygonal holes, preferably elliptical holes, then, install the special-shaped shaft sleeve 4 in the arm frame shaft hole 7, here, the special-shaped shaft sleeve 4 and the arm frame shaft hole 7 are coaxially arranged, ensure the assembly accuracy between each arm frame of the concrete pump truck, the problem that the special-shaped shaft sleeve 4 is easy to wear caused by the rotation of the arm frame shaft hole 7 on the arm frame beam 1 can be solved through the cooperation between the special-shaped shaft sleeve 4 and the arm frame shaft hole 7, the service life of the arm frame beam 1 is remarkably improved, the outer contour of the outer flange 9 of the special-shaped shaft sleeve 4 and the shaft sleeve connecting ring 3 are welded, thereby limiting the special-shaped shaft sleeve 4 to move axially.
Further, a lining plate 2 which is matched and connected with the special-shaped shaft sleeve 4 is arranged in the side wall of the arm frame beam 1, and the lining plate 2 is a metal piece. It should be noted that, the lining plates 2 are vertically installed in the side walls of the arm frame beam 1, the elliptical holes and the special-shaped shaft sleeves 4 formed on the lining plates 2 are in interference fit, so as to ensure connection stability, the material of the lining plates 2 can be high-strength steel, aluminum alloy or titanium alloy, preferably high-strength steel, the material strength is high, the fatigue resistance performance is good, the larger load from the arm frame beam 1 can be borne, the lining plates 2 in the two side walls of the arm frame beam 1 are symmetrically arranged, namely, the number of the lining plates 2 in the left side wall and the number of the lining plates 2 in the right side wall are the same, the arrangement positions are the same, and note that at least two lining plates 2 are installed in the side wall of the arm frame beam 1, and also a plurality of lining plates 2 can be arranged in parallel.
Further, a sealing material 6 is arranged at the joint gap between the shaft sleeve connecting ring 3 and the arm frame beam 1 so as to fill and seal the joint gap. It should be noted that, the concrete pump truck works outdoors, but as an important bearing structure piece, the working condition of the running is relatively worse, the joint gap between the shaft sleeve connecting ring 3 and the arm frame beam 1 is provided with a sealing material 6, the joint gap can be filled and sealed, the sealing material 6 coated at the joint gap between the shaft sleeve connecting ring and the arm frame can prevent the corrosive media such as rainwater, concrete mortar and the like from entering the gap between the special-shaped shaft sleeve 4 and the inner lining plate 2 through the gap, so that the inner lining plate 2 and the special-shaped shaft sleeve 4 are corroded, and the service life of the arm frame beam 1 is influenced. The sealing material 6 may be sealing glue, sealing rubber or sealing gasket, preferably sealing glue, and is applied circumferentially along the joint gap, and after the application is completed, the sealing material is left for a period of time until the glue is completely solidified.
As a relatively preferred embodiment of the arm frame beam, referring to fig. 1 to 9, the arm frame beam comprises an arm frame beam 1, the arm frame beam 1 is made of carbon fiber, at least two pieces of inner lining plates 2 are installed on the side wall of the arm frame beam 1, the inner lining plates 2 are made of high-strength steel, elliptical holes formed in the inner lining plates 2 are in interference fit with the special-shaped shaft sleeves 4, arm frame shaft holes 7 are symmetrically formed in the side wall of the arm frame beam 1, the arm frame shaft holes 7 are elliptical and in interference fit with the special-shaped shaft sleeves 4, the special-shaped shaft sleeves 4 and the arm frame shaft holes 7 are coaxially arranged, the special-shaped shaft sleeves 4 penetrate through the side wall of the arm frame beam 1, sleeve connecting rings 3 sleeved on the outer peripheral surface of the outer side wall are sleeved, the sleeve connecting rings 3 limit the special-shaped shaft sleeves 4 to axially move, sealing materials 6 are arranged at the joint gaps of the sleeve connecting rings 3 and the arm frame beam 1, the joint gaps are filled with sealing materials 6, the sealing materials 6 are sealant, the joint gaps can be filled and sealed, and the problem that the shaft holes 7 in the arm frame shaft holes 7 are easy to rotate in the arm frame beam 1 can be remarkably prolonged in service life by the matching between the special-shaped shaft sleeves 4 and the special-shaped shaft holes 7.
The preferred embodiments of the present utility model have been described in detail above with reference to the accompanying drawings, but the present utility model is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present utility model within the scope of the technical concept of the present utility model, and all the simple modifications belong to the protection scope of the present utility model.
In addition, the specific features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations are not described further.
Moreover, any combination of the various embodiments of the utility model can be made without departing from the spirit of the utility model, which should also be considered as disclosed herein.
Claims (11)
1. The utility model provides a cantilever crane axle sleeve structure, its characterized in that includes dysmorphism axle sleeve (4), cantilever crane shaft hole (7) on cantilever crane roof beam (1) are run through in outer portion (9) of dysmorphism axle sleeve (4) and its protrusion in cantilever crane roof beam (1) lateral wall, the outline of outer portion (9) is for being different from circular shape, in order to with dysmorphism axle sleeve (4) with cantilever crane shaft hole (7) card fixedly connects.
2. The boom shaft sleeve structure according to claim 1, further comprising a shaft sleeve connecting ring (3), wherein an outer flange (9) of the special-shaped shaft sleeve (4) penetrates through a boom shaft hole (7) on the side wall of the boom (1) and is sleeved with the shaft sleeve connecting ring (3) on the shaft sleeve outer peripheral surface protruding out of the outer side wall of the boom (1) so as to limit the special-shaped shaft sleeve (4).
3. Boom bushing structure according to claim 2, characterized in that the bushing connection ring (3) and the profiled bushing (4) are welded.
4. A boom bushing structure according to claim 3, characterized in that the profiled bushing (4) and the bushing connection ring (3) are alloy pieces.
5. The boom sleeve structure according to claim 2, characterized in that the inner bore of the sleeve connection ring (3) and the outer contour of the outer flange (9) of the shaped sleeve (4) have the same shape.
6. The boom sleeve structure according to claim 1, characterized in that the special-shaped sleeve (4) comprises a flange end portion (8) and an outer protruding portion (9) which are connected, and an inner hole of the special-shaped sleeve (4) is circular.
7. The boom sleeve structure according to claim 1, characterized in that the outer contour of the outer flange (9) of the special-shaped sleeve (4) is oval, oval or polygonal.
8. A boom girder, characterized in that a boom bushing structure according to any of claims 1-7 is provided, said boom girder (1) being a fibre composite structural member.
9. The cantilever beam according to claim 8, characterized in that a lining plate (2) which is in fit connection with the special-shaped shaft sleeve (4) is arranged in the side wall of the cantilever beam (1), and the lining plate (2) is a metal piece.
10. The cantilever beam according to claim 9, characterized in that at least two of the lining plates (2) are mounted in the side walls of the cantilever beam (1).
11. The boom beam according to claim 8, characterized in that the profiled bushing (4) and the boom shaft bore (7) are coaxially arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320523419.XU CN220015829U (en) | 2023-03-16 | 2023-03-16 | Cantilever crane shaft sleeve structure and cantilever crane roof beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320523419.XU CN220015829U (en) | 2023-03-16 | 2023-03-16 | Cantilever crane shaft sleeve structure and cantilever crane roof beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220015829U true CN220015829U (en) | 2023-11-14 |
Family
ID=88687348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320523419.XU Active CN220015829U (en) | 2023-03-16 | 2023-03-16 | Cantilever crane shaft sleeve structure and cantilever crane roof beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220015829U (en) |
-
2023
- 2023-03-16 CN CN202320523419.XU patent/CN220015829U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10583860B2 (en) | Steering arm assembly, steering mechanism and multi-axle steering wheel type heavy duty vehicle | |
| CN220015829U (en) | Cantilever crane shaft sleeve structure and cantilever crane roof beam | |
| CN109477339B (en) | Large robot with weight-optimized articulated mast | |
| WO2014019312A1 (en) | Pin, rotational connection structure, jib connection structure, and engineering machine | |
| CN207905107U (en) | A kind of steel damper and assembling-type metal energy-dissipation beam column node | |
| CN211733671U (en) | Bearing structure and hoisting equipment | |
| CN100400933C (en) | Combination type pulley for arm support of portal hoist, maintaining and installing technique | |
| CN210884876U (en) | Hoisting tool for marine low-speed diesel engine cylinder liner | |
| US11225770B2 (en) | Work arm of work machine | |
| CN110671279A (en) | Reverse balance flange connection node and manufacturing method and application thereof | |
| KR20120072741A (en) | Arm center boss controlling generation of fatigue crack | |
| CN210339226U (en) | Supporting device for radial stacker | |
| CN102227319A (en) | Rolling bearing device for wheel | |
| CN213320922U (en) | Agitating lorry and tank body structure thereof | |
| CN213451119U (en) | T-shaped welding type flange structure for hydraulic cylinder | |
| CN218118454U (en) | Sheath structure, shock absorber and vehicle | |
| US10781851B2 (en) | Pivot bearing assembly having a pivot pin and having at least one bearing block and assembly method therefor | |
| JP6647980B2 (en) | Hydraulic excavator | |
| CN220364293U (en) | Lower chord connecting joint of crane boom | |
| CN217652762U (en) | Pin shaft hole plugging structure, shield beam, top beam and hydraulic support | |
| CN211950937U (en) | Wear-resisting ring for pump | |
| KR200496769Y1 (en) | Tilting reinforcement structure of slewing drive | |
| CN220483020U (en) | Quick detachable distance rod | |
| CN204592050U (en) | A kind of integral cross universal coupling | |
| CN217232972U (en) | Angle steel reinforcing apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |