CN210103342U - Tower crane jib loading boom down chord tenon fourth of twelve earthly branches connection structure - Google Patents
Tower crane jib loading boom down chord tenon fourth of twelve earthly branches connection structure Download PDFInfo
- Publication number
- CN210103342U CN210103342U CN201920883702.7U CN201920883702U CN210103342U CN 210103342 U CN210103342 U CN 210103342U CN 201920883702 U CN201920883702 U CN 201920883702U CN 210103342 U CN210103342 U CN 210103342U
- Authority
- CN
- China
- Prior art keywords
- connecting plate
- pin shaft
- chord
- tenon
- tower crane
- 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
Images
Landscapes
- Jib Cranes (AREA)
Abstract
A tower crane boom down-chord mortise-tenon joint structure comprises a left main chord (1), a right main chord (2), a left connecting plate (3), a right connecting plate (4), a connecting pin shaft (5), a vertical pin shaft (6) and a split pin (7). The crane boom lower chord tenon-and-mortise connecting structure connects the left connecting plate (3) and the right connecting plate (4) together in the horizontal direction through the connecting pin shaft (5); the connecting pin shaft (5) is fixed by a vertical pin shaft (6) which axially penetrates through the right connecting plate (4). The utility model discloses jib loading boom lower chord member adopts this kind of connected mode, has following several advantages than traditional approach: the installation is completed and the installation is in place, so that the influence of human factors is reduced; the installation process is simple and quick, and the potential safety hazard of the tower crane boom lower chord tenon-and-mortise connection is solved.
Description
Technical Field
The utility model relates to a tower crane jib loading boom down chord member mortise-tenon joint structure belongs to tower crane technical field.
Background
In traditional tower crane, the lower chord of the cargo boom of flat-top tower crane is usually connected by bolts, the connection mode is convenient, but in actual operation, operators cannot always pre-tighten according to required pre-tightening force, and the safety hazard in practical sense is formed.
Disclosure of Invention
The utility model discloses an aim at, to the problem that current tower crane jib loading boom down chord mortise-tenon joint bolted connection exists, disclose a tower crane jib loading boom down chord mortise-tenon joint structure, solve the potential safety hazard.
The technical scheme of the utility model is that the tower crane boom lower chord tenon-and-mortise connection structure comprises a left main chord, a right main chord, a left connecting plate and a right connecting plate; the connecting structure connects the left connecting plate and the right connecting plate together in the horizontal direction through a connecting pin shaft; the vertical pin shaft penetrates through the right connecting plate from the axial direction to fix the connecting pin shaft.
A first stepped hole is formed in the middle of the left connecting plate in the horizontal direction; the aperture of the first stepped hole can be freely inserted into the connecting pin shaft.
A straight hole is formed in the middle of the right connecting plate in the horizontal direction, and the diameter of the straight hole is equal to that of the connecting pin shaft; a second stepped hole is formed in the vertical direction of the left connecting plate, and the diameter of the second stepped hole is equal to the diameter of the vertical pin shaft; and the axis of the straight hole is vertically crossed and superposed with the axis of the second stepped hole.
The left connecting plate is welded with the left main chord; and the right connecting plate is welded with the right main chord.
And a step is arranged at one end part of the connecting pin shaft.
One end part of the vertical pin shaft is provided with a step; the other end of the vertical pin shaft is provided with an open pin hole vertical to the vertical pin shaft.
The beneficial effects of the utility model are that, the utility model discloses jib loading boom lower chord member adopts this kind of connected mode, has following several advantages than traditional approach: the installation is completed and the installation is in place, so that the influence of human factors is reduced; the installation process is simple and quick, and the potential safety hazard of the tower crane boom lower chord tenon-and-mortise connection is solved.
Drawings
FIG. 1 is a schematic view of the mortise-tenon joint structure of the boom lower chord of the present invention;
FIG. 2 is a schematic view of a left connecting plate;
FIG. 3 is a schematic diagram of a right connecting plate structure;
FIG. 4 is a schematic view of a connecting pin structure;
FIG. 5 is a schematic view of a vertical pin shaft configuration;
in the drawing, 1 is a left main chord; 2 is a right main chord; 3 is a left connecting plate; 4 is a right connecting plate; 5 is a connecting pin shaft; 6 is a vertical pin shaft; and 7 is a cotter pin.
Detailed Description
The specific embodiment of the present invention is shown in fig. 1.
The embodiment relates to a tower crane boom down-chord mortise-tenon joint structure, which comprises a left main chord 1, a right main chord 2, a left connecting plate 3, a right connecting plate 4, a connecting pin shaft 5, a vertical pin shaft 6 and a split pin 7. The lower chord tenon-and-mortise connecting structure connects the left connecting plate 3 and the right connecting plate 4 together in the horizontal direction through a connecting pin shaft 5; the connecting pin shaft is fixed by a vertical pin shaft 6 axially penetrating through the right connecting plate 4.
The embodiment is implemented specifically as follows:
and the connecting pin shaft 5 is inserted into and penetrates through the first stepped hole in the horizontal direction of the left connecting plate, and is continuously inserted into the crisscross horizontal hole of the right connecting plate.
Welding the left main chord 1 with the left connecting plate 3 and the connecting pin shaft 5; and welding the right main chord 2 with the right connecting plate 4.
During connection, the vertical pin shaft 6 penetrates through the second stepped hole of the right connecting plate and is inserted into the connecting pin shaft 5, and the split pin 7 is inserted into the split pin hole at one end of the vertical pin shaft 6, so that installation is completed.
Claims (6)
1. A tower crane boom lower chord tenon-and-mortise connection structure comprises a left main chord, a right main chord, a left connecting plate and a right connecting plate, and is characterized in that the left connecting plate and the right connecting plate are connected together by the connection structure through a connection pin shaft in the horizontal direction; the vertical pin shaft penetrates through the right connecting plate from the axial direction to fix the connecting pin shaft.
2. The tower crane boom down-chord mortise-tenon joint structure of claim 1, wherein a first step hole is formed in the middle of the left connecting plate in the horizontal direction; the aperture of the first stepped hole can be freely inserted into the connecting pin shaft.
3. The tower crane boom down-chord tenon-and-mortise connection structure as claimed in claim 1, wherein a straight hole is formed in the middle of the left connecting plate in the horizontal direction, and the diameter of the hole is equal to the diameter of the connecting pin shaft; a second stepped hole is formed in the vertical direction of the left connecting plate, and the diameter of the second stepped hole is equal to the diameter of the vertical pin shaft; and the axis of the straight hole is vertically crossed and superposed with the axis of the second stepped hole.
4. The tower crane boom down-chord mortise and tenon joint structure of claim 1, wherein the left connecting plate is welded with the left main chord; and the right connecting plate is welded with the right main chord.
5. The tower crane boom down-chord tenon-and-mortise connection structure of claim 1, wherein one end of the connecting pin shaft is provided with a step.
6. The tower crane boom down-chord tenon-and-mortise connection structure of claim 1, wherein one end of the vertical pin shaft is provided with a step; the other end of the vertical pin shaft is provided with an open pin hole vertical to the vertical pin shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920883702.7U CN210103342U (en) | 2019-06-13 | 2019-06-13 | Tower crane jib loading boom down chord tenon fourth of twelve earthly branches connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920883702.7U CN210103342U (en) | 2019-06-13 | 2019-06-13 | Tower crane jib loading boom down chord tenon fourth of twelve earthly branches connection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210103342U true CN210103342U (en) | 2020-02-21 |
Family
ID=69565400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920883702.7U Active CN210103342U (en) | 2019-06-13 | 2019-06-13 | Tower crane jib loading boom down chord tenon fourth of twelve earthly branches connection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210103342U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4299501A1 (en) * | 2022-06-30 | 2024-01-03 | WOLFFKRAN Holding AG | Connecting device for connecting boom segments of a boom of a tower crane |
-
2019
- 2019-06-13 CN CN201920883702.7U patent/CN210103342U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4299501A1 (en) * | 2022-06-30 | 2024-01-03 | WOLFFKRAN Holding AG | Connecting device for connecting boom segments of a boom of a tower crane |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210103342U (en) | Tower crane jib loading boom down chord tenon fourth of twelve earthly branches connection structure | |
| CN210103341U (en) | Boom lower chord connecting structure | |
| CN201914865U (en) | Pin shaft easy to assemble and disassemble | |
| CN104018680A (en) | Lifting method of large-span solid-web type arc beam | |
| CN204252839U (en) | The spliced crownblock beam of a kind of level | |
| CN102071745B (en) | Stylobate joint of framework column | |
| CN105570261A (en) | Detachable screw | |
| CN104310241A (en) | Standard knot of tower crane | |
| CN106049886B (en) | A kind of push-and-pull rod heavy duty promotion and downward putting device | |
| CN213916861U (en) | Tower body single male and female joint welding tool | |
| CN202744224U (en) | Conveniently-dismantled holding rod | |
| CN211397503U (en) | Device capable of realizing efficient drill rod adding and connecting | |
| CN210529640U (en) | Tail water access door trolley opening and closing device | |
| CN209793055U (en) | Tool for disassembling planet shaft of wind power gear box | |
| CN202438839U (en) | Hanging and connecting disk device for machine tool numerical control operation panel | |
| CN102774758A (en) | Derrick convenient for dismounting | |
| CN202513527U (en) | Large-span tension-resisting adhesion-in-tower type crescent steel tube hanging point structure | |
| CN205401365U (en) | Detachable screw rod | |
| CN111874825A (en) | Construction method for hoisting component by using unconventional hoisting equipment | |
| CN201690183U (en) | Serial yoke plate for 1150-kilovolt compact type 12-bundle leads | |
| CN205908028U (en) | Heavy load of rigidity pull rod promotes and transfers device | |
| CN218713983U (en) | Novel all-bolt square column connecting piece and connecting structure | |
| CN210944565U (en) | Lifting point cross beam device for lifting equipment | |
| CN218911103U (en) | Guide beam quick connecting structure | |
| CN216478275U (en) | Top boom upper chord pin shaft connecting structure of flat head type crane |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 332005 Yishang Avenue, Yichun Economic Development Zone, Jiangxi Province Patentee after: Jiangxi Zhongtian Intelligent Equipment Co., Ltd Address before: 332005 Yishang Avenue, Yichun Economic Development Zone, Jiangxi Province Patentee before: JIANGXI ZHONGTIAN MACHINERY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |