CN112647551A - Pin shaft mounting structure, scarifier and bulldozer - Google Patents
Pin shaft mounting structure, scarifier and bulldozer Download PDFInfo
- Publication number
- CN112647551A CN112647551A CN202011412092.6A CN202011412092A CN112647551A CN 112647551 A CN112647551 A CN 112647551A CN 202011412092 A CN202011412092 A CN 202011412092A CN 112647551 A CN112647551 A CN 112647551A
- Authority
- CN
- China
- Prior art keywords
- mounting hole
- pin
- mounting structure
- surface portion
- taper sleeve
- 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.)
- Pending
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/76—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/76—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
- E02F3/80—Component parts
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
- E02F5/30—Auxiliary apparatus, e.g. for thawing, cracking, blowing-up, or other preparatory treatment of the soil
- E02F5/32—Rippers
Abstract
The invention relates to the field of engineering machinery, and discloses a pin shaft mounting structure, a ripper and a bulldozer, wherein the pin shaft mounting structure comprises a pin shaft (10), a first component and a second component which are connected through the pin shaft, the first component and the second component are respectively provided with a first mounting hole (31) and a second mounting hole (41) which correspond to each other, the hole wall of the first mounting hole is provided with a first conical surface part which gradually expands along the direction far away from the second mounting hole, the pin shaft mounting structure further comprises a taper sleeve (20) which is assembled between the pin shaft and the first conical surface part, and the taper sleeve is provided with a second conical surface part (21) the outer surface of which can be matched with the first conical surface part. The first mounting hole enlarges the aperture of the tail end through the first conical surface part, the first mounting hole is convenient to align and position with the second mounting hole, the pin shaft can be smoothly inserted, and the pin shaft, the first mounting hole and the second mounting hole can be accurately adjusted to the position centered axially by arranging the taper sleeve.
Description
Technical Field
The invention relates to engineering machinery, in particular to a pin shaft mounting structure, a scarifier and a bulldozer.
Background
The ripper of bull-dozer includes swing arm and quiet arm, and swing arm and quiet arm pass through the round pin hub connection. In the prior art, corresponding mounting holes are formed in the movable arm and the static arm, an inner bushing is arranged in the movable arm, and in order to meet the use requirements, the pin shaft is in small clearance fit with the inner bushing and the mounting holes of the static arm, so that the pin shaft is difficult to align and insert into the corresponding mounting holes during assembly. During assembly, the relative positions of the movable arm and the static arm need to be adjusted repeatedly to adapt to the insertion of the pin shaft, and time and labor are consumed.
Disclosure of Invention
The invention aims to overcome the problem that a pin shaft is difficult to assemble in the prior art, and provides a pin shaft mounting structure which is convenient to assemble.
In order to achieve the above object, an aspect of the present invention provides a pin shaft mounting structure, where the pin shaft mounting structure includes a pin shaft, and a first component and a second component connected by the pin shaft, where the first component and the second component are respectively provided with a first mounting hole and a second mounting hole corresponding to each other, a hole wall of the first mounting hole has a first tapered surface portion that gradually expands along a direction away from the second mounting hole, the pin shaft mounting structure further includes a taper sleeve assembled between the pin shaft and the first tapered surface portion, and the taper sleeve has a second tapered surface portion whose outer surface can be matched with the first tapered surface portion.
Optionally, the inner surface of the taper sleeve is in interference fit with the pin shaft, and the first conical surface portion is in interference fit with the second conical surface portion.
Optionally, the second conical surface portion is provided with a shrinkage groove allowing the second conical surface portion to shrink and deform.
Optionally, the contraction groove extends along a generatrix of the second conical surface portion.
Optionally, the taper sleeve includes a flange portion disposed at a large end of the second tapered surface portion, and the flange portion is provided with an ejection hole.
Optionally, the pin shaft and the taper sleeve are correspondingly provided with an assembly hole and fixed to each other through a fastener mounted in the assembly hole; and/or a bush in clearance fit with the pin shaft is arranged between the second component and the pin shaft.
Optionally: the first component comprises a body and a step part which is attached to the body, and the first mounting hole penetrates through the body and the step part; and/or the aperture of the small end of the first conical surface part is consistent with the inner diameter of the second mounting hole.
The application still provides a scarifier, wherein, the scarifier includes the round pin axle mounting structure of this application, the first part is quiet arm, the second part is the swing arm.
Optionally, the fixed arm includes a first portion and a second portion located on two sides of the movable arm, the first mounting holes are disposed on the first portion and the second portion, and the taper sleeves are disposed between the first taper surface portions of the two first mounting holes and the pin shaft.
The application also provides a bulldozer, wherein the bulldozer comprises the ripper.
Through the technical scheme, the diameter of the tail end of the first mounting hole is enlarged through the first conical surface portion, the first mounting hole is conveniently aligned and positioned with the second mounting hole, the pin shaft can be smoothly inserted, and the pin shaft, the first mounting hole and the second mounting hole can be accurately adjusted to the position centered axially through the taper sleeve, so that the pin shaft is accurately positioned and mounted relative to the first mounting hole and the second mounting hole.
Drawings
FIG. 1 is a cross-sectional view illustrating one embodiment of a pin mounting structure of the present application;
FIG. 2 is a cross-sectional view of the pin mounting structure of FIG. 1 with the taper sleeve removed;
fig. 3 is a perspective view of the drogue of fig. 1.
Description of the reference numerals
10-pin shaft, 11-assembly hole, 20-taper sleeve, 21-second taper surface part, 211-shrinkage groove, 22-flange part, 221-ejection hole, 30-static arm, 30 a-first part, 30 b-second part, 31-first assembly hole, 32-body, 33-step part, 40-movable arm, 41-second assembly hole, 50-fastener and 60-bushing.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
In the present invention, the use of directional terms such as "upper, lower, left, right" generally means upper, lower, left, right as viewed with reference to the accompanying drawings, unless otherwise specified; "inner and outer" refer to the inner and outer relative to the profile of the components themselves. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
According to an aspect of the application, a round pin axle mounting structure is provided, wherein, round pin axle mounting structure includes round pin axle 10 and is used for passing through first part and the second part that round pin axle 10 connects, first part with be provided with first mounting hole 31 and the second mounting hole 41 that correspond each other on the second part respectively, the pore wall of first mounting hole 31 has along keeping away from the first conical surface portion that the direction of second mounting hole 41 expands gradually, round pin axle mounting structure is still including assembling taper sleeve 20 between round pin axle 10 and the first conical surface portion, taper sleeve 20 have the surface can with first conical surface portion complex second conical surface portion 21.
In the present application, the first mounting hole 31 enlarges the aperture of the terminal through the first conical surface portion, so as to be aligned and positioned with the second mounting hole 41, and the pin 10 can be smoothly inserted. By providing the taper sleeve 20, the pin 10, the first mounting hole 31 and the second mounting hole 41 can be accurately adjusted to the axially aligned position to ensure accurate positioning and mounting of the pin 10 relative to the first mounting hole 31 and the second mounting hole 41.
Specifically, when assembling, the first mounting hole 31 and the second mounting hole 41 are roughly centered (i.e., the center lines of the first mounting hole 31 and the second mounting hole 41 are roughly coincident). Since the tip end of the first mounting hole 31 is enlarged by the first tapered surface portion, the substantial centering of the first mounting hole 31 and the second mounting hole 41 can be easily accomplished. Then, as shown in fig. 2, the pin 10 is inserted from the enlarged end of the first mounting hole 31, and the pin 10 can be smoothly inserted into the first mounting hole 31 and the second mounting hole 41 under the guidance of the first tapered portion. Subsequently, the taper sleeve 20 can be sleeved on the end of the pin shaft 10 and pressed into the first mounting hole 31, so that the first tapered surface portion is matched with the second tapered surface portion 21, and in the process, the pin shaft 10, the first mounting hole 31 and the second mounting hole 41 are self-adaptively adjusted relative to each other in radial position, so that the pin shaft 10, the first mounting hole 31 and the second mounting hole 41 are accurately centered.
In the prior art, the pin 10 and the mounting hole are in clearance fit, and when two relatively rotating components are connected, the clearance fit can cause impact between the pin 10 and the components, and the components are easily damaged. In the present application, preferably, the inner surface of the taper sleeve 20 may be in interference fit with the pin shaft 10, and the first tapered surface portion is in interference fit with the second tapered surface portion 21. That is, the pin 10 forms an interference fit with the first tapered portion (i.e., the first component) via the taper sleeve 20 to prevent the pin 10 from rotating relative to the first component, thereby avoiding impact and damage caused by a clearance fit in the prior art. Therefore, in the present embodiment, the taper sleeve 20 not only can play a centering effect, but also can be used to improve the stability and the service life of the pin shaft mounting structure.
During installation, the taper sleeve 20 can be pressed into the first installation hole 31 along the axial direction of the first installation hole 31, so that the second conical surface portion 21 of the taper sleeve 20 is pressed against the first conical surface portion, and therefore on one hand, the centering of the pin shaft 10, the first installation hole 31 and the second installation hole 41 is adjusted, and on the other hand, the interference fit of the taper sleeve 20 with the pin shaft 10 and the first conical surface portion is completed.
Wherein, in order to make the taper sleeve 20 interference fit between the pin shaft 10 and the first taper portion, the taper sleeve 20 may be deformed in a shrinkage manner during the press-in process. To facilitate this deformation, the second tapered surface portion 21 is provided with a contraction groove 211 that allows the second tapered surface portion 21 to be contracted and deformed. The contraction groove 211 may be in any suitable form, so long as the drogue 20 forms an incomplete sleeve structure (i.e., a ring shape with a gap in cross section). For convenience of processing, as shown in fig. 3, the shrinkage groove 211 may extend along a generatrix of the second cone portion 21, that is, the shrinkage groove 211 is straight and is easy to open on the second cone portion 21.
As described above, the drogue 20 is finally installed at the time of assembly. When the taper sleeve 20 is disassembled, the taper sleeve 20 is also disassembled firstly. To facilitate the disassembly of the taper sleeve 20, as shown in fig. 1 and 3, the taper sleeve 20 includes a flange portion 22 provided at a large end of the second tapered surface portion 21, and the flange portion 22 is provided with an ejection hole 221. After assembly, the flange portion 22 abuts against the end of the first portion, and when disassembly is required, the plug member is simply inserted through the plug hole 221, and the taper sleeve 20 is pushed out from the first mounting hole 31. For the purpose of ejection, the ejection holes 221 may be threaded holes, and the ejection members may be bolts, so that the taper sleeve 20 can be ejected by tightening the bolts. In addition, in order to avoid the axial deviation of the taper sleeve 20 during the ejection process, a balanced ejection force should be provided as much as possible so as to move the taper sleeve 20 along the axial direction of the first mounting hole 31. Preferably, a plurality of ejection holes 221, which are evenly distributed around the axis of the drogue 20, may be provided on the flange portion 22. When disassembling, the ejector member may be simultaneously inserted through the plurality of ejection holes 221 to perform the ejection operation, or the ejector member may be inserted through the ejection holes 221 one by one and perform the ejection operation a plurality of times.
It will be appreciated that to achieve the desired mechanical properties, the drogue 20 is a metal piece (e.g., made of steel). For ease of assembly and re-use, the drogue 20 may be configured to be elastically deformed after compression.
In the present application, the positioning of the pin 10 can be ensured by the taper sleeve 20, and the pin 10 can be fixed to the first member and the second member in a suitable manner to axially position the pin 10. Preferably, the pin 10 may be axially positioned by the taper sleeve 20. Specifically, the pin shaft 10 and the taper sleeve 20 are correspondingly provided with assembly holes 11 and fixed to each other by fasteners 50 installed in the assembly holes. Wherein the fitting holes may be provided at appropriate positions. Preferably, in order to avoid affecting the centering of the pin 10 during the assembly of the fastener 50, the assembly holes may be arranged along the axial direction of the pin 10 and the taper sleeve 20. During assembly, after the taper sleeve 20 is pressed in, the pin 10 and the taper sleeve 20 are connected by a fastener 50 (e.g., a bolt).
In addition, a bushing 60 which is in clearance fit with the pin shaft 10 is arranged between the second component and the pin shaft 10. During assembly, bushing 60 is installed into second mounting hole 41 prior to insertion of pin 10, and first mounting hole 31 and second mounting hole 41 are then substantially centered.
In the present application, in order to facilitate the installation of the taper sleeve 20, the taper angle formed by the first tapered surface portion and the second tapered surface portion 21 should be small, and the first tapered surface portion should be arranged to extend a long distance in the axial direction. Therefore, the entire hole wall of the first mounting hole 31 may be provided as the first tapered surface portion. Further, the first mounting hole 31 may be extended as long as possible. Preferably, as shown in fig. 3, the first member includes a body 32 and a step portion 33 attached to the body 32, and the first mounting hole 31 is disposed through the body 32 and the step portion 33. By adding the step portion 33, the first mounting hole 31 can be lengthened, which is advantageous for guiding the second taper portion 21 to be inserted into the taper sleeve 20.
In the preferred embodiment of the present application, the second tapered surface portion 21 is formed integrally with the outer surface of the taper sleeve 20 in addition to the flange portion 22 and has a hollow frustum shape, the taper angle and the axial length of the taper sleeve 20 can be determined according to the cross-sectional width obtained as a result of the strength calculation of the stationary arm, and the ratio of the extension length of the first mounting hole 31 on the main body 32 to the extension length on the stepped portion 33 can also be determined according to the cross-sectional width obtained as a result of the strength calculation.
In the present application, it is obvious that the minimum aperture of the first mounting hole 31 should be equivalent to the aperture of the second mounting hole 41 for assembling the pin 10. Preferably, the aperture of the small end of the first conical surface part is consistent with the inner diameter of the second mounting hole 41.
According to another aspect of the present application, a ripper is provided, wherein the ripper includes the pin mounting structure of the present application, the first part is a stationary arm 30, and the second part is a movable arm 40.
The first mounting hole 31 has an enlarged end aperture through the first tapered portion, so that the first mounting hole is aligned with the second mounting hole 41, and the pin 10 can be inserted smoothly. By providing the taper sleeve 20, the pin 10, the first mounting hole 31 and the second mounting hole 41 can be accurately adjusted to the axially aligned position to ensure accurate positioning and mounting of the pin 10 relative to the first mounting hole 31 and the second mounting hole 41.
As shown in fig. 1, the fixed arm 30 includes a first portion 30a and a second portion 30b located at both sides of the movable arm 40, and in order to facilitate assembling the pin 10, the first mounting hole 31 is disposed on each of the first portion 30a and the second portion 30b, and the taper sleeve 20 is disposed between the first taper portion of each of the first mounting holes 31 and the pin 10. When assembling, the pin 10 may be inserted through the first mounting hole 31 of either one of the first and second portions 30a and 30b, and one end of the pin 10 may be protruded through the first mounting hole 31 of the other one of the first and second portions 30a and 30 b. Subsequently, the taper sleeve 20 is pressed from the outer ends of the first portion 30a and the second portion 30b, so that the centering of the pin shaft 10, the first mounting hole 31, and the second mounting hole 41 can be adjusted adaptively. After positioning, the ends of the pins 10 may be connected to the corresponding drogues 20 by fasteners 50.
According to another aspect of the present application, there is provided a bulldozer, wherein the bulldozer includes the ripper of the present application.
The application of the bulldozer is convenient to assemble and disassemble due to the pin shaft mounting structure of the scarifier, the pin shaft 10 and the static arm 30 can form interference fit through the taper sleeve 20, and the connection reliability and the service life are improved.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, many simple modifications can be made to the technical solution of the invention. The present application includes the combination of individual features in any suitable manner. The invention is not described in detail in order to avoid unnecessary repetition. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.
Claims (10)
1. The utility model provides a round pin axle mounting structure, its characterized in that, round pin axle mounting structure includes round pin axle (10) and is used for passing through first part and second part that round pin axle (10) are connected, first part with be provided with first mounting hole (31) and second mounting hole (41) that correspond each other on the second part respectively, the pore wall of first mounting hole (31) has along keeping away from the first conical surface portion that the direction of second mounting hole (41) expands gradually, round pin axle mounting structure is still including assembling taper sleeve (20) between round pin axle (10) and the first conical surface portion, taper sleeve (20) have the surface can with first conical surface portion complex second conical surface portion (21).
2. The pin mounting structure according to claim 1, wherein the inner surface of the taper sleeve (20) is in interference fit with the pin (10), and the first tapered surface portion is in interference fit with the second tapered surface portion (21).
3. The pin mounting structure according to claim 2, wherein the second tapered surface portion (21) is provided with a contraction groove (211) that allows the second tapered surface portion (21) to be contracted and deformed.
4. The pin mounting structure of claim 3, wherein the constricted slot (211) extends along a generatrix of the second tapered surface portion (21).
5. The pin mounting structure according to claim 1, wherein the taper sleeve (20) comprises a flange portion (22) provided at a large end of the second tapered surface portion (21), the flange portion (22) being provided with an ejection hole (221).
6. The pin mounting structure according to claim 1, wherein the pin (10) and the taper sleeve (20) are provided with fitting holes correspondingly and fixed to each other by fasteners (50) mounted to the fitting holes; and/or a bush (60) which is in clearance fit with the pin shaft (10) is arranged between the second component and the pin shaft (10).
7. The pin mounting structure of claim 1, wherein:
the first component comprises a body (32) and a step part (33) attached to the body (32), and the first mounting hole (31) penetrates through the body (32) and the step part (33); and/or the presence of a gas in the gas,
the aperture of the small end of the first conical surface part is consistent with the inner diameter of the second mounting hole (41).
8. A ripper, wherein the push arm includes the pin mounting structure of any one of claims 1-7, the first member being a stationary arm (30), and the second member being a movable arm (40).
9. The ripper of claim 8, characterized in that the stationary arm (30) includes a first portion (30a) and a second portion (30b) located on both sides of the movable arm (40), the first mounting hole (31) is provided on each of the first portion (30a) and the second portion (30b), and the taper sleeve (20) is provided between the first taper portion of the two first mounting holes (31) and the pin (10).
10. A bulldozer, characterized in that it comprises the ripper of claim 8 or 9.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202011412092.6A CN112647551A (en) | 2020-12-03 | 2020-12-03 | Pin shaft mounting structure, scarifier and bulldozer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202011412092.6A CN112647551A (en) | 2020-12-03 | 2020-12-03 | Pin shaft mounting structure, scarifier and bulldozer |
Publications (1)
Publication Number | Publication Date |
---|---|
CN112647551A true CN112647551A (en) | 2021-04-13 |
Family
ID=75350220
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202011412092.6A Pending CN112647551A (en) | 2020-12-03 | 2020-12-03 | Pin shaft mounting structure, scarifier and bulldozer |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN112647551A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113373999A (en) * | 2021-06-23 | 2021-09-10 | 中铁二局集团建筑有限公司 | Reinforced concrete pipe culvert dredging method |
CN114635911A (en) * | 2022-03-16 | 2022-06-17 | 江苏徐工工程机械研究院有限公司 | Pin shaft assembly and assembling method thereof and engineering machinery |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050077255A1 (en) * | 2003-09-05 | 2005-04-14 | Robert Schluter | Pivot hinge assembly |
CN101974918A (en) * | 2010-10-15 | 2011-02-16 | 三一重机有限公司 | Self-lubricating bearing for boom of excavator |
CN204868271U (en) * | 2015-08-28 | 2015-12-16 | 贵州群建精密机械有限公司 | Lathe is with anchor clamps of long and thin annular thin wall spare of processing |
CN105202012A (en) * | 2015-09-25 | 2015-12-30 | 中国铁建重工集团有限公司 | Pin shaft |
CN106884403A (en) * | 2017-04-20 | 2017-06-23 | 哈尔滨中诚科技发展有限公司 | A kind of loading machine for the snow breaker that opens ice connects extension arm |
CN207687205U (en) * | 2017-11-13 | 2018-08-03 | 浙江海洋大学 | A kind of easy-to-dismount shaft coupling peculiar to vessel |
CN209294200U (en) * | 2018-11-20 | 2019-08-23 | 河南中烟工业有限责任公司 | A kind of shaker arm connection structure |
CN211166301U (en) * | 2019-11-19 | 2020-08-04 | 东风商用车有限公司 | Leaf spring stiff end support assembly |
-
2020
- 2020-12-03 CN CN202011412092.6A patent/CN112647551A/en active Pending
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050077255A1 (en) * | 2003-09-05 | 2005-04-14 | Robert Schluter | Pivot hinge assembly |
CN101974918A (en) * | 2010-10-15 | 2011-02-16 | 三一重机有限公司 | Self-lubricating bearing for boom of excavator |
CN204868271U (en) * | 2015-08-28 | 2015-12-16 | 贵州群建精密机械有限公司 | Lathe is with anchor clamps of long and thin annular thin wall spare of processing |
CN105202012A (en) * | 2015-09-25 | 2015-12-30 | 中国铁建重工集团有限公司 | Pin shaft |
CN106884403A (en) * | 2017-04-20 | 2017-06-23 | 哈尔滨中诚科技发展有限公司 | A kind of loading machine for the snow breaker that opens ice connects extension arm |
CN207687205U (en) * | 2017-11-13 | 2018-08-03 | 浙江海洋大学 | A kind of easy-to-dismount shaft coupling peculiar to vessel |
CN209294200U (en) * | 2018-11-20 | 2019-08-23 | 河南中烟工业有限责任公司 | A kind of shaker arm connection structure |
CN211166301U (en) * | 2019-11-19 | 2020-08-04 | 东风商用车有限公司 | Leaf spring stiff end support assembly |
Non-Patent Citations (1)
Title |
---|
中国标准出版社: "《中国国家标准分类汇编 机械卷 3》", 31 March 1993, pages: 579 - 592 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113373999A (en) * | 2021-06-23 | 2021-09-10 | 中铁二局集团建筑有限公司 | Reinforced concrete pipe culvert dredging method |
CN113373999B (en) * | 2021-06-23 | 2023-01-03 | 中铁二局集团建筑有限公司 | Reinforced concrete pipe culvert dredging method |
CN114635911A (en) * | 2022-03-16 | 2022-06-17 | 江苏徐工工程机械研究院有限公司 | Pin shaft assembly and assembling method thereof and engineering machinery |
CN114635911B (en) * | 2022-03-16 | 2023-04-07 | 江苏徐工工程机械研究院有限公司 | Pin shaft assembly and assembling method thereof and engineering machinery |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN112647551A (en) | Pin shaft mounting structure, scarifier and bulldozer | |
CN108138586B (en) | Engine crankcase support apparatus and interface | |
US7036858B2 (en) | Hoist ring | |
US20230364665A1 (en) | Tapered transition pilot | |
US11541445B2 (en) | Tight space pilot | |
EP3486435A1 (en) | Fuse joint with fenestrated fuse pin | |
CN217976917U (en) | Pin shaft assembling structure | |
CN215333862U (en) | Pin connection structure and aeroengine | |
US20040109763A1 (en) | Method of producing and assembling a cooling device inside an axial-flow gas turbine blade, and axial-flow gas turbine blade produced using such a method | |
CN211778383U (en) | Connecting mechanism for two shafts | |
CN203892063U (en) | Thrust chamber capable of being repeatedly dismantled and installed | |
JP6305019B2 (en) | Coupling bolt hole positioning jig and coupling fastening method | |
CN210589381U (en) | Connecting device for quick mounting and dismounting of flying manipulator | |
CN110542534B (en) | Wind tunnel pipe section connecting device and connecting method | |
CN220015281U (en) | Central shaft of small aeroengine | |
RU2316683C1 (en) | Separator for roller bearing | |
CN115370644A (en) | Pin shaft assembling structure | |
CN114909392A (en) | Roller assembly | |
CN102840162A (en) | Keyless shaft joint | |
CN212637637U (en) | Electronic steering column anti-rotation device | |
JP3234251U (en) | Inner surface nodal locking type shank sleeve | |
CN111823019B (en) | Radial subdivision dislocation combination integrated machining method for radial spherical plain bearing outer ring shaft | |
CN219767237U (en) | Mixer assembly welding positioning tool | |
CN210877711U (en) | Bolt bridge steel member throws hole device | |
CN210152839U (en) | Positioning pin for connecting main shaft and hub and corresponding wind driven generator |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
RJ01 | Rejection of invention patent application after publication | ||
RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210413 |