CN203269410U - Shaft-end anti-disengaging device for cargo booms of tower crane - Google Patents
Shaft-end anti-disengaging device for cargo booms of tower crane Download PDFInfo
- Publication number
- CN203269410U CN203269410U CN 201320256903 CN201320256903U CN203269410U CN 203269410 U CN203269410 U CN 203269410U CN 201320256903 CN201320256903 CN 201320256903 CN 201320256903 U CN201320256903 U CN 201320256903U CN 203269410 U CN203269410 U CN 203269410U
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- Prior art keywords
- joint
- axle head
- shaft
- baffle plate
- welded
- Prior art date
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- Expired - Lifetime
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Abstract
The utility model provides a shaft-end anti-disengaging device for cargo booms of a tower crane, which is simple in structure, safe and reliable. The anti-disengaging device comprises a dual-joint and a single-joint, wherein the dual-joint is welded on a lower chord of one cargo boom, the single-joint is welded on a lower chord of another cargo boom, and the single-joint is matched with the dual-joint; the dual-joint and the single-joint are provided with mutually communicated through holes, and a circular ring baffle is welded on one side of the dual-joint is located and at the outer edge of the through hole; a connecting pin shaft is arranged in the through holes of the dual-joint and the single-joint; the connecting pin shaft comprises a shaft body and a shaft end, the shaft end is arranged on the right side of the shaft body, the diameter of the shaft end is less than the inner diameter of the circular ring baffle, and the diameter of the shaft body is greater than the inner diameter of the circular ring baffle; the shaft end is provided with a radial hole, and extends out of the circular ring baffle; a spring latch is inserted in the radial hole. The anti-disengaging device disclosed by the utility model is simple in structure and easy to install; and by adopting a high-strength spring steel wire, the anti-disengaging device is uneasy to damage; the anti-disengaging device can be used repeatedly, thereby reducing the hidden troubles of late installation.
Description
Technical field
The utility model relates to a kind of crane arm anti-drop device, especially a kind of jib for tower crane axle head anti-drop device.
Background technology
Existing hoisting crane, connecting between the crane arm arm that bearing pin comes off is the one of the main reasons that causes tower crane accidents, the lighter's part of damage, structural distortion, severe one causes folding arm, fall tower, complete machine topples, and the grave accident that even has some casualties occurs.Between the crane arm arm, the connection bearing pin comes off, and safety in production has caused serious threat to elevator machinery, therefore connect between to the crane arm arm in tower crane state compulsion standard bearing pin design, making, installation, follow-up maintenance is used that strict requirement is all arranged, with the safety that guarantees to produce and workman's personal safety.
Existing crane arm connects bearing pin and adopts triangle welding baffle plate to add the spring cotter fixed form, Weir Plate Thickness and weld seam all have influence on the safety of structure, add frequent dismounting, the adverse effect that in work, hammering produces, and the fixed form of spring cotter also directly has influence on the safety of structure, therefore is necessary to improve jib for tower crane axle head anti-drop device.
The utility model content
The purpose of this utility model is to provide a kind of simple in structure, safe and reliable jib for tower crane axle head anti-drop device.
Realize the jib for tower crane axle head anti-drop device of the utility model purpose, comprise the twin adapter that is welded on the crane arm lower boom and the single joint that is welded on another weighing arm lower boom, described single joint matches with twin adapter; Described twin adapter and single joint are provided with the through hole of mutual perforation, a side of described twin adapter, and the outer rim place that is positioned at through hole is welded with the annulus baffle plate; Described twin adapter is provided with the connection bearing pin with being connected in the through hole of joint; Described connection bearing pin comprises axis body and the axle head that is positioned at the axis body right side, and the diameter of described axle head is less than the internal diameter of annulus baffle plate, and the diameter of described axis body is greater than the internal diameter of annulus baffle plate; Described axle head is provided with radial hole, and stretches out outside the annulus baffle plate; Be inserted with spring tongue in described radial hole.
Described spring tongue comprises the radius stay of inserted link and the bending that is connected with the inserted link circular arc.
The thickness of described annulus baffle plate is 8mm.
The beneficial effects of the utility model are as follows: jib for tower crane axle head anti-drop device of the present utility model, simple in structure, easy for installation, adopt high strength spring steel wire not fragile, and reusable, reduced the later stage hidden danger has been installed, made work more reliable.
Description of drawings
Fig. 1 is the structural representation of jib for tower crane axle head anti-drop device of the present utility model.
The specific embodiment
Embodiment of the present utility model is as follows: as shown in Figure 1, jib for tower crane axle head anti-drop device of the present utility model, comprise the twin adapter 1 that is welded on the crane arm lower boom and the single joint 2 that is welded on another weighing arm lower boom, described single joint 2 matches with twin adapter 1; Described twin adapter 1 and single joint 2 are provided with the through hole of mutual perforation, a side of described twin adapter 1, and the outer rim place that is positioned at through hole is welded with annulus baffle plate 4; Described twin adapter 1 connects bearing pin 3 with being connected to be provided with in the through hole of joint 2, described connection bearing pin 3 comprises axis body 31 and is positioned at the axle head 32 on axis body 31 right sides, the diameter of described axle head 32 is less than the internal diameter of annulus baffle plate 4, and the diameter of described axis body 31 is greater than the internal diameter of annulus baffle plate 4; Described axle head 32 is provided with radial hole, and stretches out outside annulus baffle plate 4; Be inserted with spring tongue 5 in described radial hole.
Described spring tongue 5 comprises the radius stay of inserted link and the bending that is connected with the inserted link circular arc.
The thickness of described annulus baffle plate 4 is 8mm.
principle of work of the present utility model is as follows: anti-drop device of the present utility model, twin adapter and a joint crane arm welding are firm, single joint and another joint crane arm welding are firm, connect bearing pin due to the left side and above be idler wheel surface, connect bearing pin the shaft shoulder can not be set, employing way is inside fixed, the bearing pin right-hand component be will connect and gear size and twin adapter size be processed into wide, fix with the thick annulus baffle plate of 8mm on the right of the connection bearing pin again, this annulus baffle plate is welded on twin adapter, play baffle effect, the fixing high-strength spring latch that adopts of axle head, spring tongue version is seen figure, insert by direction as shown during insertion, and then half-twist can become end fixing device, this device adopts high strength spring steel wire not fragile, and reusable, reduced the later stage hidden danger has been installed, make work more reliable.
Embodiment recited above is described preferred implementation of the present utility model; be not that scope of the present utility model is limited; do not breaking away under the spiritual prerequisite of the utility model design; various distortion and improvement that the common engineering staff in this area make technical solutions of the utility model all should fall in the definite protection domain of claims of the present utility model.
Claims (3)
1. jib for tower crane axle head anti-drop device is characterized in that: comprise the twin adapter that is welded on the crane arm lower boom and be welded on single joint on another weighing arm lower boom, described single joint matches with twin adapter; Described twin adapter and single joint are provided with the through hole of mutual perforation, a side of described twin adapter, and the outer rim place that is positioned at through hole is welded with the annulus baffle plate; Described twin adapter is provided with the connection bearing pin with being connected in the through hole of joint; Described connection bearing pin comprises axis body and the axle head that is positioned at the axis body right side, and the diameter of described axle head is less than the internal diameter of annulus baffle plate, and the diameter of described axis body is greater than the internal diameter of annulus baffle plate; Described axle head is provided with radial hole, and stretches out outside the annulus baffle plate; Be inserted with spring tongue in described radial hole.
2. jib for tower crane axle head anti-drop device according to claim 1, it is characterized in that: described spring tongue comprises the radius stay of inserted link and the bending that is connected with the inserted link circular arc.
3. jib for tower crane axle head anti-drop device according to claim 1 and 2, it is characterized in that: the thickness of described annulus baffle plate is 8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320256903 CN203269410U (en) | 2013-05-13 | 2013-05-13 | Shaft-end anti-disengaging device for cargo booms of tower crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320256903 CN203269410U (en) | 2013-05-13 | 2013-05-13 | Shaft-end anti-disengaging device for cargo booms of tower crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203269410U true CN203269410U (en) | 2013-11-06 |
Family
ID=49499862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320256903 Expired - Lifetime CN203269410U (en) | 2013-05-13 | 2013-05-13 | Shaft-end anti-disengaging device for cargo booms of tower crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203269410U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106946168A (en) * | 2017-05-08 | 2017-07-14 | 哈尔滨理工大学 | A kind of new movable arm tower crane crane arm main chord structure |
-
2013
- 2013-05-13 CN CN 201320256903 patent/CN203269410U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106946168A (en) * | 2017-05-08 | 2017-07-14 | 哈尔滨理工大学 | A kind of new movable arm tower crane crane arm main chord structure |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131106 |