CN203754309U - Rotary supporting device of walking trolley - Google Patents
Rotary supporting device of walking trolley Download PDFInfo
- Publication number
- CN203754309U CN203754309U CN201420135029.6U CN201420135029U CN203754309U CN 203754309 U CN203754309 U CN 203754309U CN 201420135029 U CN201420135029 U CN 201420135029U CN 203754309 U CN203754309 U CN 203754309U
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- China
- Prior art keywords
- shaft part
- rotating shaft
- supporting device
- support
- shaft
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- Expired - Lifetime
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- 239000002184 metal Substances 0.000 claims description 11
- 239000000428 dust Substances 0.000 claims description 10
- 238000005096 rolling process Methods 0.000 claims description 10
- 230000001050 lubricating effect Effects 0.000 claims description 9
- 230000003467 diminishing effect Effects 0.000 claims description 3
- 238000005299 abrasion Methods 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000003137 locomotive effect Effects 0.000 description 4
- 238000005461 lubrication Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
Abstract
The utility model discloses a rotary supporting device of a walking trolley. The rotary supporting device comprises a connecting plate, a bracket and a rotary shaft, wherein the bracket is connected with the walking trolley; the connecting plate is positioned above the bracket; the rotary shaft penetrates through the connecting plate and the bracket and is rotatably connected with the bracket; a thrust bearing is arranged outside the rotary shaft in a sleeving manner and is positioned between the connecting plate and the bracket. By virtue of the thrust bearing, the rotary supporting device of the walking trolley, which is provided by the utility model, rotates flexibly, so that serious abrasion between the inner side of each rim of wheels and a track is prevented favorably, a tower crane can normally walk, and the service life of the wheels of the tower crane are prolonged.
Description
Technical field
The utility model relates to engineering machinery field, particularly about a kind of slewing supporting device of walking carriage of tower crane.
Background technology
Figure 1 shows that the walking carriage of existing a kind of tower crane and the schematic diagram of slewing supporting device and guide rail thereof.As shown in Figure 1, the top of slewing supporting device 20 is connected with the underframe of tower crane, and running wheel is walked along track centerline on track 30.The master who Figure 2 shows that the slewing supporting device of walking carriage in Fig. 1 looks schematic diagram, Figure 3 shows that its along A in Fig. 2 to part cross-sectional schematic.As shown in Figures 2 and 3, this walking carriage adopts the board-like slewing supporting device 20 that slides, and between support 21 and connecting panel 22, is provided with sliding panel 24, and rotating shaft 23 connects connecting panel 22, sliding panel 24 and support 21 from top to bottom.The lower end of rotating shaft 23 adopts nut 26 and stop washer 25 to lock.
According to above structure, owing to being realized and being relatively rotated by the board-like slewing supporting device that slides between support 21 and connecting panel 22, sliding-frictional resistance is larger, under insufficient lubrication or overweight pressure, and the rotating effect extreme difference of slewing supporting device 20.On the other hand, owing to not separating between rotating shaft 23 and support 21, the rotation of support 21 countershafts 23 causes larger friction drag.In addition, the lower end of rotating shaft 23 adopts circular nut 26 and stop washer 25 to lock, and has increased friction force when rotating shaft 23 is rotated, and the revolution of countershaft 23 also causes obstruction.When running wheel is at rectilinear orbit or arc or S shape track is up while walking to occur departing from, above factor makes the revolution of slewing supporting device 20 dumb, cause wheel rim inner side easily to be worn and torn with track, can not ensure the normal walking of tower machine, the service life of tower locomotive wheel is shorter.
Utility model content
In view of this, the utility model object is to provide a kind of slewing supporting device of tower crane walking carriage, can, by the flexible rotating of the slewing supporting device of walking carriage, depart from and walking carriage is adjusted voluntarily, prevent the severe wear of wheel rim inner side and track.
For reaching above-mentioned advantage, the utility model provides a kind of slewing supporting device of walking carriage, comprise connecting panel, support, rotating shaft, described support is for being connected with walking carriage, described connecting panel is positioned at described support top, described rotating shaft is passed described connecting panel and described support and is dynamically connected with described bracket-rotatable, and described rotating shaft is arranged with thrust baring outward, and described thrust baring is between described connecting panel and described support.
In an embodiment of the present utility model, described rotating shaft is from top to bottom through described support and described connecting panel, described rotating shaft is the diminishing Step Shaft of a diameter, it comprises the second shaft part that is positioned at first shaft part on its top and is positioned at the first shaft part below, corresponding described the first shaft part of described connecting panel and the second shaft part are provided with stepped hole, described rotating shaft is connected with described connecting panel with the cooperation of described stepped hole with described the second shaft part by described the first shaft part, described rotating shaft is passed described support and is positioned on described support by the nut that is locked in described rotating shaft bottom.
In an embodiment of the present utility model, the diameter at described stepped hole top is greater than the diameter of described the first shaft part, the bottom of described stepped hole and described the second shaft part flush fit.
In an embodiment of the present utility model, the upper surface of the first shaft part of described rotating shaft is lower than the upper surface of connecting panel.
In an embodiment of the present utility model, the blowout patche of described thrust baring is fixed on described connecting panel, and the seat ring of described thrust baring is fixed on described support, and the internal diameter of described seat ring is greater than rotating shaft and is positioned at the diameter of part herein.
In an embodiment of the present utility model, the second shaft part of described rotating shaft is arranged in described thrust baring, and with the blowout patche tight fit connection of described thrust baring, the lower surface of the seat ring of described thrust baring is lower than the lower surface of the second shaft part.
In an embodiment of the present utility model, described rotating shaft also comprises the 3rd shaft part that is positioned at the second shaft part below, described the 3rd shaft part runs through described support, and is provided with oilless metal between described the 3rd shaft part and described support, described oilless metal and described support tight fit connection.
In an embodiment of the present utility model, described rotating shaft also comprises the 4th shaft part that is positioned at the 3rd shaft part below, described the 4th shaft part is provided with outside thread, described rotating shaft is positioned on described support by being locked in two circular nuts of described the 4th shaft part, between described pair of circular nut and described support, leaves gap.
In an embodiment of the present utility model, described thrust baring is thrust ball bearing.
In an embodiment of the present utility model, described thrust baring overcoat has dust boot, and described dust boot is provided with lubricating cup, and described lubricating cup is positioned at part corresponding with the rolling body of described thrust baring on dust boot.
In sum, the slewing supporting device of the tower crane walking carriage that the utility model provides, by adopting thrust baring to make the slewing supporting device flexible rotating of walking carriage, be conducive to prevent the severe wear of wheel rim inner side and track, ensure the normal walking of tower machine, improve the service life of tower locomotive wheel.
Brief description of the drawings
Figure 1 shows that the walking carriage of existing a kind of tower crane and the schematic diagram of slewing supporting device and guide rail thereof.
The master who Figure 2 shows that the slewing supporting device of walking carriage in Fig. 1 looks schematic diagram.
The slewing supporting device that Figure 3 shows that walking carriage in Fig. 2 along A to part cross-sectional schematic.
Figure 4 shows that the part cross-sectional schematic of the slewing supporting device of walking carriage in embodiment of the utility model.
Detailed description of the invention
Technological means and effect of taking for reaching predetermined utility model object for further setting forth the utility model, below in conjunction with accompanying drawing and preferred embodiment, to detailed description of the invention of the present utility model, structure, feature and effect thereof, be described in detail as follows.
Figure 4 shows that the part cross-sectional schematic of the slewing supporting device of walking carriage in embodiment of the utility model.As shown in Figure 4, the slewing supporting device of walking carriage of the present utility model comprises connecting panel 41, support 42, rotating shaft 43 and thrust baring 44.
Support 42 seen and is roughly U-shaped by its side, and it comprises a top board 42a and two side plate 42b to downward-extension by the two ends of top board 42a.Walking carriage is located between two side plate 42b of support 42.Connecting panel 41 is positioned at support 42 tops, and rotating shaft 43 is passed connecting panel 41 and support 42 from top to bottom and is rotatably connected with support 42.Thrust baring 44 is sheathed on outside rotating shaft 43, and between connecting panel 41 and support 42.Especially, in the present embodiment, the upper surface of the top board 42a of support 42 and lower surface are fixed with respectively disk 421 and a lower disc 422 on one, and the length for increasing rotating shaft 43 to shaft part that should position and increase the working (finishing) area of rotating shaft 43 reduces the difficulty of processing of rotating shaft 43.
Particularly, rotating shaft 43 is the diminishing Step Shaft of a diameter, and it comprises the second shaft part 432, the 3rd shaft part 433 and the 4th shaft part 434 that are positioned at first shaft part 431 on its top and are positioned at successively the first shaft part 431 belows.On connecting panel 41, corresponding the first shaft part 431 and the second shaft part 432 are provided with stepped hole 411, and rotating shaft 43 is connected with connecting panel 41 with the cooperation of stepped hole 411 with the second shaft part 432 by the first shaft part 431.Particularly, the diameter at stepped hole 411 tops is greater than the diameter of the first shaft part 431, the bottom of stepped hole 411 and the second shaft part 432 flush fits, the upper surface of the first shaft part 431 of rotating shaft 43, lower than the upper surface of connecting panel 41, is avoided rotating shaft 43 to contact with the element of connecting panel 41 tops and causes friction.
Thrust baring 44 is sheathed on the outside of the second shaft part 432 of rotating shaft 43.Thrust baring 44 comprises blowout patche 441, seat ring 443 and the rolling body 442 between blowout patche 441 and seat ring 443.Preferably, in the present embodiment, thrust baring 44 is thrust ball bearing, and its rolling body 442 is ball.The second shaft part 432 of rotating shaft 43 is arranged in thrust baring 44, and with blowout patche 441 flush fits of thrust baring 44.The blowout patche 441 of thrust baring 44 is fixed on connecting panel 41, and the seat ring 443 of thrust baring 44 is fixed on the upper disk 421 of support 42.The internal diameter of seat ring 443 is greater than rotating shaft 43 and is positioned at the diameter of part herein, and its lower surface is lower than the lower surface of the second shaft part 432, make to have a gap between the second shaft part 432 and the upper surface of support 42, can avoid the lower surface of the second shaft part 432 contact with the upper surface of support 42 and cause friction.
In addition, the outer cover of thrust baring 44 has dust boot 46, and dust boot 46 is provided with lubricating cup 47.The number of lubricating cup 47 is at least 1, and in the present embodiment, the number of lubricating cup 47 is 4, and these lubricating cups 47 are evenly distributed on the circumference of corresponding rolling body 442 positions of dust boot 46, so that rolling body 442 is lubricated fully.
Further, the 3rd shaft part 433 of rotating shaft 43 runs through the top board 42a of support 42 and upper and lower disk 421 and 422 provided thereon, and the lower surface of the 3rd shaft part 433 is a little less than the lower surface of lower disc 422.Between the 3rd shaft part 433 and support 42, be provided with oilless metal 48, oilless metal 48 and support 42 tight fit connections, rotating shaft 43 can be rotated relative to oilless metal 48.In the present embodiment, oilless metal 48 passes the top board 42a of upper disk 421 and support 42 and stretches into the top of lower disc 422, and so design makes lower disc 422 also can be used for supporting oilless metal 48.
Further, the 4th shaft part 434 of rotating shaft 43 is provided with outside thread, and the outside face locking of the 4th shaft part 434 has the nut offseting with the lower surface of the 3rd shaft part 433, preferred, is a pair of circular nut 45 in the present embodiment.Adopt the structure of two circular nuts can prevent that the nut of locking on the 4th shaft part 434 from occurring to become flexible.In addition, the lower surface of the 3rd shaft part 433 is a little less than the lower surface of lower disc 422, make to leave gap between two upper surfaces of circular nut 45 and the lower surface of the lower disc 422 of support 42, can reduce the friction force between two circular nuts 45 and support 42, thereby do not affect the revolution of walking carriage.
That is to say, in the present embodiment, not relative motion between blowout patche 441, connecting panel 41, rotating shaft 43 and two circular nut 45 of thrust baring 44, not relative motion between seat ring 443, dust boot 46, support 42 and the oilless metal 48 of thrust baring 44, aforementioned part relatively rotates by the rolling of rolling body 442 with aftermentioned part, makes the rotating object of walking carriage thereby reach.
When running wheel during at track travel and track centerline depart from, running wheel will push track, now track points to the power of track centerline to one of running wheel, under the effect of power, running wheel has to the trend of track centerline operation, because slewing supporting device revolution is flexible, walking carriage can flexible motion, and then can drive running wheel to adjust and depart from voluntarily, can effectively reduce the wearing and tearing between wheel rim inner side and track, ensure the normal operation of tower machine, improve the service life of tower locomotive wheel.
In sum, the slewing supporting device of walking carriage of the present utility model adopts thrust bearing, between connecting panel and support, realize rotation by the rolling of rolling body in thrust baring, friction coefficient is little, rotate flexibly, in overweight pressure or short-term insufficient lubrication situation, can keep good rotating effect; Between rotating shaft of the present utility model and support, separate with oilless metal, the steering resistance between support and rotating shaft is little, and without oil injecting lubricating, has removed daily attention from; Rotating shaft of the present utility model lower end adopts two circular nut locking, and leaves gap between two circular nut and support, can reduce the friction between rotating shaft and support, thereby the revolution of walking carriage not caused to resistance.Above-mentioned improvement makes the revolution of walking carriage more flexible, reduce the wearing and tearing of wheel rim inner side with track, can ensure the normal operation of tower machine, on arc or S shape track, all can walk, extend the service life of tower locomotive wheel, improved the in-use performance of tower crane.
The above, it is only preferred embodiment of the present utility model, not the utility model is done to any pro forma restriction, although the utility model discloses as above with preferred embodiment, but not in order to limit the utility model, any those skilled in the art, do not departing within the scope of technical solutions of the utility model, when can utilizing the technology contents of above-mentioned announcement to make a little change or being modified to the equivalent embodiment of equivalent variations, in every case be not depart from technical solutions of the utility model content, any simple modification of above embodiment being done according to technical spirit of the present utility model, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.
Claims (10)
1. the slewing supporting device of a walking carriage, comprise connecting panel, support, rotating shaft, described support is for being connected with walking carriage, described connecting panel is positioned at described support top, described rotating shaft is passed described connecting panel and described support and is dynamically connected with described bracket-rotatable, it is characterized in that: described rotating shaft is arranged with thrust baring outward, described thrust baring is between described connecting panel and described support.
2. the slewing supporting device of walking carriage as claimed in claim 1, it is characterized in that: described rotating shaft is from top to bottom through described support and described connecting panel, described rotating shaft is the diminishing Step Shaft of a diameter, it comprises the second shaft part that is positioned at first shaft part on its top and is positioned at the first shaft part below, corresponding described the first shaft part of described connecting panel and the second shaft part are provided with stepped hole, described rotating shaft is connected with described connecting panel with the cooperation of described stepped hole with described the second shaft part by described the first shaft part, described rotating shaft is passed described support and is positioned on described support by the nut that is locked in described rotating shaft bottom.
3. the slewing supporting device of walking carriage as claimed in claim 2, is characterized in that: the diameter at described stepped hole top is greater than the diameter of described the first shaft part, the bottom of described stepped hole and described the second shaft part flush fit.
4. the slewing supporting device of walking carriage as claimed in claim 2, is characterized in that: the upper surface of the first shaft part of described rotating shaft is lower than the upper surface of connecting panel.
5. the slewing supporting device of walking carriage as claimed in claim 1, it is characterized in that: the blowout patche of described thrust baring is fixed on described connecting panel, the seat ring of described thrust baring is fixed on described support, and the internal diameter of described seat ring is greater than rotating shaft and is positioned at the diameter of part herein.
6. the slewing supporting device of walking carriage as claimed in claim 2, it is characterized in that: the second shaft part of described rotating shaft is arranged in described thrust baring, and with the blowout patche tight fit connection of described thrust baring, the lower surface of the seat ring of described thrust baring is lower than the lower surface of the second shaft part.
7. the slewing supporting device of walking carriage as claimed in claim 2, it is characterized in that: described rotating shaft also comprises the 3rd shaft part that is positioned at the second shaft part below, described the 3rd shaft part runs through described support, and between described the 3rd shaft part and described support, be provided with oilless metal, described oilless metal and described support tight fit connection.
8. the slewing supporting device of walking carriage as claimed in claim 7, it is characterized in that: described rotating shaft also comprises the 4th shaft part that is positioned at the 3rd shaft part below, described the 4th shaft part is provided with outside thread, described rotating shaft is positioned on described support by being locked in two circular nuts of described the 4th shaft part, between described pair of circular nut and described support, leaves gap.
9. the slewing supporting device of walking carriage as claimed in claim 1, is characterized in that: described thrust baring is thrust ball bearing.
10. the slewing supporting device of walking carriage as claimed in claim 1, is characterized in that: described thrust baring overcoat has dust boot, and described dust boot is provided with lubricating cup, and described lubricating cup is positioned at part corresponding with the rolling body of described thrust baring on dust boot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420135029.6U CN203754309U (en) | 2014-03-24 | 2014-03-24 | Rotary supporting device of walking trolley |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420135029.6U CN203754309U (en) | 2014-03-24 | 2014-03-24 | Rotary supporting device of walking trolley |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203754309U true CN203754309U (en) | 2014-08-06 |
Family
ID=51249608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420135029.6U Expired - Lifetime CN203754309U (en) | 2014-03-24 | 2014-03-24 | Rotary supporting device of walking trolley |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203754309U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105836594A (en) * | 2016-05-31 | 2016-08-10 | 中国矿业大学 | Self-climbing type general maintenance lifting device for large wind turbine and using method for self-climbing type general maintenance lifting device |
| CN108032626A (en) * | 2017-12-01 | 2018-05-15 | 新疆特变电工自控设备有限公司 | A kind of number marking tube prints conveying device |
| CN111517233A (en) * | 2020-05-09 | 2020-08-11 | 谢信财 | Movable portal crane |
-
2014
- 2014-03-24 CN CN201420135029.6U patent/CN203754309U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105836594A (en) * | 2016-05-31 | 2016-08-10 | 中国矿业大学 | Self-climbing type general maintenance lifting device for large wind turbine and using method for self-climbing type general maintenance lifting device |
| CN108032626A (en) * | 2017-12-01 | 2018-05-15 | 新疆特变电工自控设备有限公司 | A kind of number marking tube prints conveying device |
| CN111517233A (en) * | 2020-05-09 | 2020-08-11 | 谢信财 | Movable portal crane |
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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: 20140806 |