CN201896877U - Shaft head structure of transmission main shaft of crawler crane - Google Patents
Shaft head structure of transmission main shaft of crawler crane Download PDFInfo
- Publication number
- CN201896877U CN201896877U CN2010206702880U CN201020670288U CN201896877U CN 201896877 U CN201896877 U CN 201896877U CN 2010206702880 U CN2010206702880 U CN 2010206702880U CN 201020670288 U CN201020670288 U CN 201020670288U CN 201896877 U CN201896877 U CN 201896877U
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- China
- Prior art keywords
- shaft
- main shaft
- spindle nose
- copper sheathing
- transmission main
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Abstract
The utility model relates to the technical field of hoisting equipment, in particular to a shaft head structure of a transmission main shaft of a crawler crane, which solves the problems that a walking shaft of the crawler crane flees axially to cause rack abrasion, the walking shaft shifts, and a shaft head of a main transmission shaft is cut off in field construction. The shaft head structure comprises a main shaft body, and is characterized in that one end of the main shaft body is provided with an axial hole, a copper bush is arranged in the axial hole, and the copper sleeve can accommodate 1/2 length of a short shaft. Stress concentration is reduced, rack and shaft head abrasion is reduced, and the phenomenon of cutoff of the shaft head of the main transmission shaft is avoided, so the main shaft is simplified, the maintenance cost is reduced, and the assembly and disassembly efficiency is improved.
Description
Technical field
The utility model relates to the lifting appliance technical field, relates in particular to a kind of crawler belt loop wheel machine transmission main shaft spindle nose structure.
Background technique
The crawler belt loop wheel machine is used very wide, the location of this hoist traveling axle mainly is to realize by stopping between axle card and frame, when equipment operation, the sliding friction of traveling main shaft and frame is quite severe, the axle card has wearing and tearing slightly, and the traveling axle just can produce axial float, causes the frame wearing and tearing, the displacement of traveling axle causes transmission shaft clutch gear engagement in service bad.Transmit by vertical shaft because of the power of motor simultaneously to running mechanism, vertical shaft requires than higher with the assembling and positioning of bearing, if there are not the axle shelves, there are wearing and tearing just can make the vertical shaft tenesmus slightly, the small-sized awl tooth of axle head causes roof pressure to cause meshing tension to horizontal passive auger tooth, sends abnormal sound and trip stop during walking.The main drive shaft spindle nose can take place during this equipment is constructed at the scene in addition to cut off, because be the spindle nose that relies on the main shaft diameter between walking driving shaft and the driven axle with the driven axle axis hole keep connecting rotation movingly, and the walking of this crawler crane realizes by chain transmission, gross weight reached tens tons when lift heavy travelled, therefore the side direction pulling force of drive chain is very big, the result causes driving shaft in transmission process, and spindle nose fractures under the double action of torsion and shearing force.Spindle nose is once cut-out, and main shaft is scrapped with regard to whole, and the cost height loses very greatly, and in addition because main shaft structure is comparatively complicated, disassemble or assemble are extremely inconvenient, maintenance cost height and efficient is low.
Existing spindle nose structural type is varied, mainly is that the condition such as working condition, effect by main shaft designs.As patent announcement number is CN1986148Y parallel triaxial main axle journal structure, comprises main shaft, a moving platform, a fixed platform, and three identical branches that connect moving platform and fixed platform, and main shaft is fixed on the moving platform; Wherein in three branches, each branch includes an input rod member, a multi-freedom degree hinge that is connected with moving platform, and two kinematic pair.And for example patent announcement number is a two parts symmetrical for CN101676573Y connecting bushing, two-part are the shape that is complementary at its inner chamber of involutory back for the spindle nose structure that is connected with two, two-part are connected and fixed by bolt, and the axle journal matching part of connecting bushing and spindle nose has the gradient that is complementary with axle journal.
Summary of the invention
The purpose of this utility model be for the location that solves crawler crane traveling axle mainly be to locate by stopping between axle card and frame to produce traveling axle axial float, cause the frame wearing and tearing, the displacement of traveling axle, and in the construction problem that the main drive shaft spindle nose cuts off can take place at the scene, a kind of crawler belt loop wheel machine transmission main shaft spindle nose structure of reasonable in design is provided, on vertical shaft, install the axle shelves additional, improved the orientation type of traveling axle simultaneously, and between axle card and frame, install plane bearing additional, eliminate the wearing and tearing between axle card and frame.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals: a kind of crawler belt loop wheel machine transmission main shaft spindle nose structure, comprise main shaft, an end that it is characterized in that described main shaft is provided with axial bore, be provided with copper sheathing in the axial bore, hold 1/2nd length of minor axis in the copper sheathing.Because between spindle nose and the driven axle axis hole is to rotate movingly, the walking of crawler crane is by chain transmission, under the working state of big load, the side direction pulling force of drive chain is very big, cause driving shaft in transmission process, spindle nose is frangibility under the double action of torsion and shearing force, copper sheathing has buffer function to minor axis, because of original minor axis and main shaft are integral structures, stress is concentrated between the shaft shoulder of minor axis and main shaft, and independent minor axis just guarantees its bending resistance, physical property such as antitorque fully from metal processing aspect.
As preferably, the axial bore interference fit of the external diameter of described copper sheathing and main shaft.For fastening copper sheathing position in the main shaft axial bore, on the external diameter of main shaft and copper sheathing matching part, open the column cap screw, with chapiter screw copper sheathing and main shaft are positioned to one.
As preferably, the external diameter of described minor axis cooperates with copper sheathing and is interference fit.It is big that the outer surface of minor axis and the inner bore surface roughness of copper sheathing design.
As preferably, the end of the axial bore of described main shaft is provided with 10～45 degree chamferings.One end of copper sheathing inserts from the end of axial bore, positioning action when chamfering plays the copper sheathing insertion.
As preferably, an end endoporus of described copper sheathing is provided with 10～45 degree chamferings.Minor axis passes through the chamfering positioning and guiding when being pressed into copper sheathing, with convenient for assembly.
As preferably, described minor axis two ends be provided with 45 degree chamferings.Press general axis class technical requirements processing, and minor axis is heat-treated.
Effective effect of the present utility model is: reduced stress and concentrated, reduced frame, spindle nose wearing and tearing, avoided main drive shaft spindle nose cutting phenomenon, main shaft is oversimplified, reduced maintenance cost, improved assembly and disassembly efficient.
Description of drawings
Fig. 1 is a kind of structural representation of the present utility model.
Among the figure: 1. main shaft, 2. copper sheathing, 3. minor axis.
Embodiment
Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.
Referring to Fig. 1, a kind of crawler belt loop wheel machine of present embodiment transmission main shaft spindle nose structure, an if main shaft 1, end processing axial bore at main shaft 1,2 * miter angle is established in the axial bore end, interference fit one copper sheathing 2 in the axial bore, interference fit one minor axis 3 in copper sheathing 2 endoporus, 1/2nd length of minor axis 3 are arranged in copper sheathing 2.
The foregoing description is to explanation of the present utility model, is not to qualification of the present utility model, any structure after the simple transformation of the present utility model, technology is all belonged to protection domain of the present utility model.
Claims (6)
1. a crawler belt loop wheel machine transmission main shaft spindle nose structure comprises main shaft (1), it is characterized in that an end of described main shaft (1) is provided with axial bore, is provided with copper sheathing (2) in the axial bore, holds 1/2nd length of minor axis (3) in the copper sheathing (2).
2. a kind of crawler belt loop wheel machine transmission main shaft spindle nose structure according to claim 1 is characterized in that the axial bore interference fit of the external diameter and the main shaft (1) of described copper sheathing (2).
3. a kind of crawler belt loop wheel machine transmission main shaft spindle nose structure according to claim 1, the external diameter that it is characterized in that described minor axis (3) cooperate with copper sheathing (2) and are interference fit.
4. a kind of crawler belt loop wheel machine transmission main shaft spindle nose structure according to claim 1 and 2 is characterized in that the end of the axial bore of described main shaft (1) is provided with 10～45 degree chamferings.
5. according to claim 1 or 2 or 3 described a kind of crawler belt loop wheel machine transmission main shaft spindle nose structures, it is characterized in that an end endoporus of described copper sheathing (2) is provided with 10～45 degree chamferings.
6. a kind of crawler belt loop wheel machine transmission main shaft spindle nose structure according to claim 1, it is characterized in that described minor axis (3) two ends be provided with 45 the degree chamferings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206702880U CN201896877U (en) | 2010-12-21 | 2010-12-21 | Shaft head structure of transmission main shaft of crawler crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206702880U CN201896877U (en) | 2010-12-21 | 2010-12-21 | Shaft head structure of transmission main shaft of crawler crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201896877U true CN201896877U (en) | 2011-07-13 |
Family
ID=44254784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206702880U Expired - Lifetime CN201896877U (en) | 2010-12-21 | 2010-12-21 | Shaft head structure of transmission main shaft of crawler crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201896877U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470645A (en) * | 2013-09-24 | 2013-12-25 | 常熟市永固起重设备安装工程有限公司 | High-reliability lifting equipment coupling |
-
2010
- 2010-12-21 CN CN2010206702880U patent/CN201896877U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470645A (en) * | 2013-09-24 | 2013-12-25 | 常熟市永固起重设备安装工程有限公司 | High-reliability lifting equipment coupling |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110713 |
|
| CX01 | Expiry of patent term |