CN105398973A - Pin shaft replacement device and port crane - Google Patents
Pin shaft replacement device and port crane Download PDFInfo
- Publication number
- CN105398973A CN105398973A CN201511000396.0A CN201511000396A CN105398973A CN 105398973 A CN105398973 A CN 105398973A CN 201511000396 A CN201511000396 A CN 201511000396A CN 105398973 A CN105398973 A CN 105398973A
- Authority
- CN
- China
- Prior art keywords
- bearing
- pin shaft
- shaft hole
- pin
- bearing pin
- 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.)
- Granted
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/06—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes with jibs mounted for jibbing or luffing movements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
- Mounting Of Bearings Or Others (AREA)
Abstract
The invention discloses a pin shaft replacement device and a port crane. A pin shaft lug plate is arranged at the end part of a front girder, and is provided with a first pin shaft hole; a second pin shaft hole is formed in a back girder; pin shafts are inserted in the first pin shaft hole and the second pin shaft hole; a bracket for supporting the front girder is mounted on the back girder, and is positioned below the second pin shaft hole; a support surface for supporting the front girder is arranged on the bracket; and the support surface is matched with a curved surface at the outer edge of the pin shaft lug plate. The bracket is adopted to support the front girder, so that the stress of the pin shafts is relieved, the service life of the pin shafts is prolonged, the replacement of the pin shafts is convenient and fast, the replacement labor capacity of the pin shafts is relieved, and the operation efficiency is improved.
Description
Technical field
The present invention relates to mechanical field, particularly a kind of bearing pin more changing device and portal crane.
Background technology
Bank bridge hoisting crane is because of working load, and frequency is comparatively large, and after long-time, the front crossbeam bearing pin hinged with rear crossbeam has wearing and tearing in various degree, or when doing pitching motion, vibration, abnormal sound, need replacing.Bearing pin is because of without acting point, and front crossbeam weight is large, needs by welding tooling, realizes the replacing of bearing pin, effort, time-consuming.The replacing options of patent CN201410083477 reclaimer pitching hinge bearing, uses jack to realize off-load.Adopt jack or Site Welding frock, there is following shortcoming: 1, because space near bearing pin is little, and front crossbeam weight is comparatively large, spendable jack size is limited; 2, jack or field fabrication frock is used, unstable or there is potential safety hazard.
Summary of the invention
In view of this, the present invention proposes a kind of bearing pin more changing device and portal crane, realizes convenient and swift replacing bearing pin, alleviating the stressed labor content with alleviating replacing bearing pin of bearing pin, improving operating efficiency.
On the one hand, the invention provides a kind of bearing pin more changing device, front large beam end is provided with bearing pin otic placode, bearing pin otic placode offers the first pin shaft hole, rear crossbeam offers the second pin shaft hole, bearing pin inserts in the first pin shaft hole and the second pin shaft hole; Rear crossbeam is provided with the bearing for supporting front crossbeam, and bearing is positioned at below the second pin shaft hole, and bearing is provided with the bearing surface for supporting front crossbeam, and bearing surface coordinates with the outer rim curved surface of bearing pin otic placode.
Further, rear crossbeam offers the chute upwards extended, bearing is arranged on chute, and bearing can move up by chute relatively.
Further, rear crossbeam is provided with wedge, wedge is positioned at below bearing, and the upper surface of wedge coordinates with the lower surface of bearing.
Further, the upper surface of wedge is wedge dip plane, and the lower surface of bearing is bearing dip plane, and wedge dip plane coordinates with bearing dip plane.
Further, rear crossbeam is provided with the actuating device for driving wedge movable, and actuating device is connected with wedge.
Further, rear crossbeam is provided with limiting stopper, limiting stopper is arranged on the front of bearing.
Further, the distance at outer rim curved surface to the first pin shaft hole center raises gradually.
Further, outer rim curved surface comprises outer rim plane and outer rim arc surface, and the distance at outer rim plane to the first pin shaft hole center is less than the distance at outer rim arc surface to the first pin shaft hole center.
In addition, present invention also offers a kind of portal crane, comprise above-mentioned bearing pin more changing device.
A kind of bearing pin provided by the invention more changing device and portal crane, crossbeam before employing seat supports, not only alleviates the stressed of bearing pin, extend bearing pin service life, and when changing bearing pin, convenient and swift, alleviate the labor content of replacing bearing pin and improve operating efficiency.
Accompanying drawing explanation
The accompanying drawing forming a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is portal crane horizontality schematic diagram of the present invention;
Fig. 2 is portal crane pitch attitude schematic diagram of the present invention;
Fig. 3 is first embodiment of the present invention bearing pin more changing device schematic diagram;
Fig. 4 is second embodiment of the present invention bearing pin more changing device schematic diagram.
Detailed description of the invention
It should be noted that, when not conflicting, the embodiment in the present invention and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
Below in conjunction with Fig. 1 to 4, the preferred embodiments of the present invention are described in further detail,
As shown in Figure 1, the preferred portal crane of the present invention, support 1 is provided with the rear crossbeam 2 of level, and front crossbeam 3 is connected with rear crossbeam 2, the steel rope of crossbeam 3 pitching motion before portal crane being also provided with hook with safety tong 4 and driving.Fig. 1 is that the front crossbeam 3 of portal crane is in horizontality, and if Fig. 2 is that crossbeam 3 is in pitching ultimate limit state before portal crane, front crossbeam 3 is locked by hook with safety tong 4, prevents front crossbeam 3 from falling down.Front crossbeam 3 is under the driving of steel rope, and the bearing pin 5 hinged with rear crossbeam 2 around front crossbeam 3 rotates, crossbeam 3 pitching motion before realizing.
As shown in Figure 3, front crossbeam 3 end is provided with bearing pin otic placode 30, bearing pin otic placode 30 offers the first pin shaft hole, rear crossbeam 2 offers the second pin shaft hole, bearing pin 5 inserts in the first pin shaft hole and the second pin shaft hole; Rear crossbeam 2 is provided with the bearing 7 for supporting front crossbeam 3, and bearing 7 is positioned at below the second pin shaft hole, and bearing 7 is provided with the bearing surface 70 for supporting front crossbeam 3, and bearing surface 70 coordinates with the outer rim curved surface 300 of bearing pin otic placode 30.
Front crossbeam 3 is when doing pitching motion, and bearing 7 not only can support front crossbeam 3, alleviates bearing pin 5 stressed, reduces bearing pin 5 and weares and teares, the vibration of crossbeam 3 pitching motion and abnormal sound before reducing.And when changing bearing pin 5, due to the supporting role of bearing 7, can convenient and swift replacing bearing pin 5, alleviate the difficulty of changing bearing pin 5 and improve and change efficiency.
As shown in Figure 3, the first embodiment bearing pin provided by the invention more changing device, rear crossbeam 2 is provided with limiting stopper 6, and limiting stopper 6 is arranged on the front of bearing 7.Rear crossbeam 2 is provided with wedge 8, and wedge 8 is positioned at below bearing 7, and the upper surface of wedge 8 coordinates with the lower surface of bearing 7.The upper surface of wedge 8 is wedge dip plane, and the lower surface of bearing 7 is bearing dip plane, and wedge dip plane coordinates with bearing dip plane.Rear crossbeam 2 is provided with the actuating device 9 for driving wedge 8 movable, and actuating device 9 is connected with wedge 8.Actuating device 9 can adopt hydraulic ram or cylinder or screw mechanism etc.
When the pitching of current crossbeam 3 is to end position, namely before, crossbeam 3 is locked by hook with safety tong 4, when front crossbeam 3 is in locking state (as shown in Figure 2 state), actuating device 9 promotes wedge 8 and travels forward, and wedge 8 promotes bearing 7 upward movement, by front crossbeam 3 jack-up, then remove old bearing pin 5, subsequently insert new bearing pin 5, last actuating device 9 promotes wedge 8 and moves backward, front crossbeam 3 puts down, and bearing pin 5 has been changed.Limiting stopper 6 pairs of bearings 7 carry out spacing.In whole replacing bearing pin 5 process, convenient and swift, alleviate the labor content of replacing bearing pin 5 and improve operating efficiency.
In addition, conveniently bearing 7 upwards jack-up, can offer the chute upwards extended on rear crossbeam 2, bearing 7 is arranged on chute, and bearing 7 can move up by chute relatively.
As shown in Figure 4, the second embodiment bearing pin provided by the invention more changing device, relative to Fig. 3 the first embodiment bearing pin more changing device difference be: eliminate wedge 8 and actuating device 9 and limiting stopper 6.The outer rim curved surface 300 of bearing pin otic placode 30 adopts polymorphic structure.As shown in Figure 4, outer rim curved surface 300 comprises outer rim plane 3000 and outer rim arc surface 3001, and the distance at outer rim plane 3000 to the first pin shaft hole center is less than the distance at outer rim arc surface 3001 to the first pin shaft hole center.Namely the distance at outer rim curved surface 300 to the first pin shaft hole center raises gradually.
When current crossbeam 3 does pitching motion, front crossbeam 3 rotates up around bearing pin 5 line of centers, outer rim arc surface 3001 enters in bearing 7, because bearing 7 is fixed on rear crossbeam 2, the distance L1 at outer rim plane 3000 to the first pin shaft hole center is less than the distance L2 at outer rim arc surface 3001 to the first pin shaft hole center, make front crossbeam 3 upwards jack-up, now can remove old bearing pin 5, then new bearing pin 5 is inserted, in whole replacing bearing pin 5 process, convenient and swift, alleviate the labor content of replacing bearing pin 5 and improve operating efficiency.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a bearing pin more changing device, it is characterized in that, front crossbeam (3) end is provided with bearing pin otic placode (30), bearing pin otic placode (30) offers the first pin shaft hole, rear crossbeam (2) offers the second pin shaft hole, and bearing pin (5) inserts in the first pin shaft hole and the second pin shaft hole; Rear crossbeam (2) is provided with the bearing (7) for supporting front crossbeam (3), bearing (7) is positioned at below the second pin shaft hole, bearing (7) is provided with the bearing surface (70) for supporting front crossbeam (3), and bearing surface (70) coordinates with the outer rim curved surface (300) of bearing pin otic placode (30).
2. bearing pin according to claim 1 more changing device, is characterized in that, rear crossbeam (2) offers the chute upwards extended, and bearing (7) is arranged on chute, and bearing (7) can move up by chute relatively.
3. bearing pin according to claim 2 more changing device, it is characterized in that, rear crossbeam (2) is provided with wedge (8), wedge (8) is positioned at bearing (7) below, and the upper surface of wedge (8) coordinates with the lower surface of bearing (7).
4. bearing pin according to claim 3 more changing device, is characterized in that, the upper surface of wedge (8) is wedge dip plane, and the lower surface of bearing (7) is bearing dip plane, and wedge dip plane coordinates with bearing dip plane.
5. bearing pin according to claim 4 more changing device, it is characterized in that, rear crossbeam (2) is provided with the actuating device (9) for driving wedge (8) movable, and actuating device (9) is connected with wedge (8).
6. the more changing device of the bearing pin according to claim 1 to 5 any one, is characterized in that, rear crossbeam (2) is provided with limiting stopper (6), and limiting stopper (6) is arranged on the front of bearing (7).
7. bearing pin according to claim 1 more changing device, is characterized in that, outer rim curved surface (300) raises gradually to the distance at the first pin shaft hole center.
8. bearing pin according to claim 7 more changing device, it is characterized in that, outer rim curved surface (300) comprises outer rim plane (3000) and outer rim arc surface (3001), and outer rim plane (3000) is less than the distance (L2) of outer rim arc surface (3001) to the first pin shaft hole center to the distance (L1) at the first pin shaft hole center.
9. a portal crane, is characterized in that, comprises the bearing pin more changing device as described in claim 1 to 8 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511000396.0A CN105398973B (en) | 2015-12-24 | 2015-12-24 | A kind of bearing pin more changing device and portal crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511000396.0A CN105398973B (en) | 2015-12-24 | 2015-12-24 | A kind of bearing pin more changing device and portal crane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105398973A true CN105398973A (en) | 2016-03-16 |
| CN105398973B CN105398973B (en) | 2017-11-21 |
Family
ID=55464793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511000396.0A Active CN105398973B (en) | 2015-12-24 | 2015-12-24 | A kind of bearing pin more changing device and portal crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105398973B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60122792U (en) * | 1984-01-27 | 1985-08-19 | 日立建機株式会社 | Mounting pin structure for boom foot in large construction machinery |
| JPH08324975A (en) * | 1995-06-05 | 1996-12-10 | Mitsubishi Heavy Ind Ltd | Hoisting boom pin replacing device |
| JP2000072385A (en) * | 1998-09-01 | 2000-03-07 | Hitachi Constr Mach Co Ltd | Construction machine |
| CN202369286U (en) * | 2011-11-09 | 2012-08-08 | 三一汽车起重机械有限公司 | Auxiliary installation device, rotary rod piece and crane |
| CN205257823U (en) * | 2015-12-24 | 2016-05-25 | 三一海洋重工有限公司 | Device and port crane are changed to round pin axle |
-
2015
- 2015-12-24 CN CN201511000396.0A patent/CN105398973B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60122792U (en) * | 1984-01-27 | 1985-08-19 | 日立建機株式会社 | Mounting pin structure for boom foot in large construction machinery |
| JPH08324975A (en) * | 1995-06-05 | 1996-12-10 | Mitsubishi Heavy Ind Ltd | Hoisting boom pin replacing device |
| JP2000072385A (en) * | 1998-09-01 | 2000-03-07 | Hitachi Constr Mach Co Ltd | Construction machine |
| CN202369286U (en) * | 2011-11-09 | 2012-08-08 | 三一汽车起重机械有限公司 | Auxiliary installation device, rotary rod piece and crane |
| CN205257823U (en) * | 2015-12-24 | 2016-05-25 | 三一海洋重工有限公司 | Device and port crane are changed to round pin axle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105398973B (en) | 2017-11-21 |
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