CN202575773U - Lifting arm locking device of crane for arm support type marine vessel - Google Patents
Lifting arm locking device of crane for arm support type marine vessel Download PDFInfo
- Publication number
- CN202575773U CN202575773U CN 201220192361 CN201220192361U CN202575773U CN 202575773 U CN202575773 U CN 202575773U CN 201220192361 CN201220192361 CN 201220192361 CN 201220192361 U CN201220192361 U CN 201220192361U CN 202575773 U CN202575773 U CN 202575773U
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- CN
- China
- Prior art keywords
- lifting arm
- locking
- arm
- screw rod
- ring
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- 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.)
- Expired - Lifetime
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Abstract
The utility model discloses a lifting arm locking device of a crane for an arm support type marine vessel and belongs to the field of lifting equipment. The device consists of two locking mechanisms which are arranged on two sides of a lifting arm in opposite directions; each locking mechanism consists of a support seat, a screw rod, a baffle ring, a locking sleeve, a locking block, and a rotation prevention plate; the middle of the screw rod is connected with the support seat; the baffle ring is formed by connecting upper and lower baffle rings and is embedded into an annular groove of the head of the screw rod; front and rear sides of the locking sleeve are provided with installation grooves respectively; the locking sleeve is fixedly connected with the baffle ring; the head of the screw rod is embedded into the installation groove on the rear side of the locking sleeve; the locking block is arranged in the installation groove on the front side of the locking sleeve; and the arc surface of the lower baffle ring is fixedly connected with the rotation prevention plate. According to the design, a large contact surface between the locking block and the lifting arm is formed, great frictional force is provided for the lifting arm, the lifting arm is restrained by pressure, and the lifting arm can be effectively prevented from moving in horizontal and vertical directions, so that the impact between the lifting arm and a support frame can be inhibited, the friction between the lifting arm and the locking block and the support seat can be reduced, the safety performance of the lifting arm and the support frame is improved, and the service life of the locking device is prolonged.
Description
Technical field
The arm latching device of the marine deck crane of a kind of boom type of the utility model belongs to the weight-lifting equipment field.
Background technology
At present, the arm latching device of marine widely used arm derrick crane peculiar to vessel can only limit the motion of arm in the horizontal direction, and in vertical direction, not enough to the arm constraint, can not limit its catenary motion by actv..Therefore; When the big hull of stormy waves jolts, will produce impact, shake between arm and the latching device, cause the lock dog and the seat wear of latching device; Need often to change, also possibly cause the instability or even the safety misadventure of arm, arm carriage when serious.
Along with the development of ocean exploitation engineering, therefore the application of marine weight-lifting equipment is more and more widely developed a kind of new arm latching device to the boom type crane ship and is just seemed very necessary in recent years.
The utility model content
The purpose of the utility model provides the arm latching device of the marine deck crane of a kind of boom type; Can effectively prevent the impact of arm and tray chamber; Reduce the friction between arm and lock dog, bearing, improve arm and the security and stability of carriage and the service life of latching device.
The utility model technical scheme:
The utility model arm latching device is made up of two catch gears, and two catch gears are arranged on the arm both sides in opposite directions; Each catch gear is made up of bearing, screw rod, back-up ring, lock tube, lock dog and torsional stop, and screw rod middle part is connected with bearing, back-up ring by about two back-up rings connect to form; Be inlaid in the annular groove of screw head; The forward and backward both sides of lock tube have mounting groove respectively, and lock tube is connected fixing with back-up ring, and screw head is embedded in the lock tube rear side mounting groove; Lock dog is loaded in the lock tube installed in front groove, and the arc surface and the torsional stop of following sheet back-up ring are affixed.
Above-mentioned screw rod end has handwheel.
Be embedded with trim ring between above-mentioned lock dog and the lock tube.
A kind of novel arm latching device of the utility model, the anti-rotation back-up ring can overcome screw rod and rotates influence to back-up ring and make it can only promote back-up ring to move forward and can not rotate during locking, thereby guarantees that lock dog contacts with the good of arm.Form bigger contact surface between lock dog and arm; Can bigger friction force and pressure constraint be provided to arm; When hull is unstable, lock dog to the friction force of arm and pressure can actv. prevent arm in the horizontal direction with the motion of vertical direction, thereby the impact of inhibition arm and tray chamber; Reduce the friction between arm and lock dog, bearing, improve arm and the safety performance of carriage and the service life of latching device.
Description of drawings
Fig. 1 the utility model catch gear scheme drawing
Fig. 2 the utility model device is implemented the locking scheme drawing
The A of Fig. 3 the utility model Fig. 1 is to view
The specific embodiment
How accompanying drawings the utility model is implemented now:
Like accompanying drawing 1, shown in 2, the end of screw rod 2 has handwheel, and screw rod 2 and bearing 1 are through being threaded; Upper and lower back-up ring 3 is embedded in the circular groove of screw rod 2 heads, following back-up ring 3 lower ends and torsional stop 7 welding, and handwheel is equipped with in the rear end of screw rod 2; The forward and backward side of lock tube 4 is respectively mounting groove, and screw head is embedded in the rear side mounting groove of lock tube 4, and lock tube 4 and upper and lower back-up ring 3 are with bolted connection; Lock dog 6 embeds in the installed in front groove of lock tube 4, setting-in trim ring 5 between lock tube 4 and lock dog 6.
As shown in Figure 2, two catch gears of this device are provided with in suspension arm mechanism 8 both sides in opposite directions; When implementing locking, rotate handwheel, screw rod travels forward; Promote back-up ring 3 and travel forward together with lock tube 4, the lock dog 6 in the screw rod lock tube 4 of two move toward one another is from radially embracing arm 9, simultaneously; 3 times sheet bonded assemblys of back-up ring torsional stop 8 has realized that effectively back-up ring, the preceding of screw rod headgear move, and do not rotate, thereby guarantee that lock dog 6 well contacts with arm 9.
Claims (3)
1. the arm latching device of the marine deck crane of boom type is made up of two catch gears, it is characterized in that two catch gears are arranged on the suspension arm mechanism both sides in opposite directions; Each catch gear is made up of bearing, screw rod, back-up ring, lock tube, lock dog and torsional stop, and screw rod middle part is connected with bearing, back-up ring by about two back-up rings connect to form; Be inlaid in the annular groove of screw head; The forward and backward both sides of lock tube have mounting groove respectively, and lock tube is connected fixing with back-up ring, and screw head is embedded in the lock tube rear side mounting groove; Lock dog is loaded in the lock tube installed in front groove, and the arc surface and the torsional stop of following sheet back-up ring are affixed.
2. the arm latching device of the marine deck crane of a kind of boom type according to claim 1 is characterized in that the screw rod end is equipped with handwheel.
3. the arm latching device of the marine deck crane of a kind of boom type according to claim 1 is characterized in that being embedded with trim ring between lock dog and the lock tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220192361 CN202575773U (en) | 2012-05-02 | 2012-05-02 | Lifting arm locking device of crane for arm support type marine vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220192361 CN202575773U (en) | 2012-05-02 | 2012-05-02 | Lifting arm locking device of crane for arm support type marine vessel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202575773U true CN202575773U (en) | 2012-12-05 |
Family
ID=47245209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220192361 Expired - Lifetime CN202575773U (en) | 2012-05-02 | 2012-05-02 | Lifting arm locking device of crane for arm support type marine vessel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202575773U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104071702A (en) * | 2014-06-26 | 2014-10-01 | 徐州重型机械有限公司 | Axis type crane |
-
2012
- 2012-05-02 CN CN 201220192361 patent/CN202575773U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104071702A (en) * | 2014-06-26 | 2014-10-01 | 徐州重型机械有限公司 | Axis type crane |
| CN104071702B (en) * | 2014-06-26 | 2016-04-27 | 徐州重型机械有限公司 | A kind of axis type hoisting 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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121205 |