CN202848907U - Lifting rope spring type safety limit alarm device for gantry crane - Google Patents
Lifting rope spring type safety limit alarm device for gantry crane Download PDFInfo
- Publication number
- CN202848907U CN202848907U CN 201220522497 CN201220522497U CN202848907U CN 202848907 U CN202848907 U CN 202848907U CN 201220522497 CN201220522497 CN 201220522497 CN 201220522497 U CN201220522497 U CN 201220522497U CN 202848907 U CN202848907 U CN 202848907U
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- spring type
- lifting rope
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Abstract
The utility model provides a lifting rope spring type safety limit alarm device for a gantry crane. The device comprises a safety limit frame and a limit detector, wherein two sides of the safety limit frame are suspended on a lower chord member of the head of a cargo boom by a steel wire rope, and the limit detector is arranged in the middle of the steel wire rope arranged at one side. Compared with the design technology of a common lever type heavy bob limit device, the device eliminates the phenomenon of the false operation of a switch since a heavy bob swings in air caused by insufficient dead weight, and solves the problem that the limit switch is damaged after being corroded since the water easily enters and accumulates at a limit hinging point of the existing lever type heavy bob, so that the normal and continuous production of the crane can be guaranteed, and the crane is reliable in safety. The device is simple in structure, convenient to assemble and disassemble, and stable in performance.
Description
Technical field
The utility model relates to the crane facility field, specifically, relates to a kind of device of goliath lifting rope lifting altitude safe spacing.
Background technology
Large-scale high pedestal jib crane is when operation, lifting altitude can reach more than hundred meters, when the lifting rope lifting altitude is larger, operating personal is difficult to naked eyes identification and judges the accurate location of suspension hook below the crane arm head, upgrade lifting rope if continue operation this moment, might make suspension hook and crane arm head clash into (being that suspension hook " is rushed to summit "), cause occuring safety misadventure.For fear of safety misadventure occurs, usually the lifting rope place below the crane arm head arranges hoisting limiter, continue to rise and cause suspension hook " to be rushed to summit " after surpassing the safety distance of regulation when preventing that suspension hook from hoisting, reach the purpose of avoiding occuring safety misadventure.At present, hoisting limiter commonly used mainly adopts the lever counterweight limit device, take MQ2000 type Jilin high pedestal jib crane as example (as shown in Figure 4), this device has advantages of simple structure and simple, but safe reliability is not high, in use there is following major defect: the one, lever system can not bear heavier suspension weight, therefore often causes the weight bob to cause the limit switch misoperation not because of weight weight; The 2nd, because weight is to be enclosed within the hoist rope, in case tangling weight easily, steel rope fault causes the limit switch misoperation; The 3rd, because limit switch box hinge place intakes easily, ponding, cause the easy corrosion damage of on-off element in the switch enclosure.
Summary of the invention
Technical problem to be solved in the utility model provides the spacing alarming device of a kind of high pedestal jib crane lifting rope spring type safety, can eliminate and misoperation and easy water inlet, ponding easily occur when existing high pedestal jib crane adopts the operation that the lever counterweight limit device brings and cause that the on-off element corrosion damages phenomenon, be a kind of safe and reliable device for limiting lifting attitude of winding.
In order to address the above problem; the utility model adopts following technical scheme: the spacing alarming device of a kind of high pedestal jib crane lifting rope spring type safety; comprise the safe spacing frame; spacing detector; the both sides of safe spacing frame by steel wire hang on the lower boom of crane arm arm head; spacing detector is installed in the centre of the steel rope of a side; described spacing detector is comprised of the plunger tpe limit switch and the striker system that are installed in the protection box; described striker system comprises the spring frame of striker and control striker return, and the locking block that is used for the locking striker.
Described safe spacing frame is the rectangular frame that is welded by four orthogonal channel-section steels, respectively is provided with a circular hole at the place, short channel-section steel middle position of rectangular frame both sides, is used for fixedly steel rope.
Be threaded connection between described striker and the striker locking block and be integral, have a hole in the bottom of locking block, be used for being connected with steel rope.
The top of described protection box is provided with the link that is connected for steel rope; protection box bottom is provided with a circular hole for the Access Control cable; a pair of open contact in control cables and the plunger tpe limit switch be connected after normally closed contact is connected, be communicated with the siren horn of hoisting crane source switch and operator's compartment.
It is 10# channel-section steel welding processing that described safe spacing frame adopts model, and the length L 3 of rectangular frame is greater than the spacing L1 of the inboard two door machine raising lines of crane hook, less than the spacing L2 of the outside two door machines raising line; The inner space width of rectangular frame is 120mm.
Two door machine raising lines of described crane hook inboard pass the rectangular frame of safe spacing frame.
The utility model device is owing to adopted above technical scheme, compare with lever counterweight limit device designing technique commonly used, have the following advantages and technique effect, the one, eliminated because of the inadequate phenomenon that causes the switch misoperation in the process of rocking in the high-altitude of weight deadweight, the problem that has solved the easily water inlet of spacing hinge place of original lever weight, ponding and caused the limit switch corrosion to damage, guarantee that the lifting function is normal, continuous production, safety is more reliable.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing and example:
Fig. 1 is the spacing alarming device integral structure of spring type safety scheme drawing;
Fig. 2 is the spacing detector drawing at a place among Fig. 1;
Fig. 3 is the A-A section (safe spacing frame birds-eye view) of Fig. 1;
Fig. 4 is existing lever counterweight limit device structural representation, and among Fig. 4, b is annular weight, and c is the lever counterweight limit device, and d is gantry head.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
In Fig. 1～3; the spacing alarming device of a kind of high pedestal jib crane lifting rope spring type safety; comprise safe spacing frame 1; spacing detector 2; it is characterized in that: the both sides of safe spacing frame 1 hang on the lower boom 6 of crane arm arm head by steel rope 11; spacing detector 2 is installed in the centre of the steel rope 11 of a side; described spacing detector 2 is comprised of the plunger tpe limit switch 3 and the striker system 4 that are installed in the protection box 5; described striker system 4 comprises the spring frame 42 of striker 41 and control striker return, and the locking block 43 that is used for the locking striker.
Be threaded connection between striker 41 and the striker locking block 43 and be integral, have a hole in the bottom of locking block 43, be used for being connected with steel rope 11.
The top of protection box 5 is provided with the link 51 that is connected for steel rope 11; protection box 5 bottoms are provided with a circular hole for the Access Control cable; a pair of open contact in control cables and the plunger tpe limit switch 3 be connected after normally closed contact is connected, be communicated with the siren horn of hoisting crane source switch and operator's compartment.
It is 10# channel-section steel welding processing that safe spacing frame 1 adopts model, and the length L 3 of rectangular frame is greater than the spacing L1 of the inboard two door machine raising lines 7 of crane hook, less than the spacing L2 of the outside two door machines raising line; The inner space width of rectangular frame is 120mm.
Two door machine raising lines 7 of described crane hook inboard pass the rectangular frame of safe spacing frame 1.
During installation, note to regulate locking block 43 safe spacing frame 1 is the level of state, striker 41 maintains a certain distance with the plunger of limit switch 3 under the self-weight tension effect of safe spacing frame 1, this moment, limit switch was in "on" position, and hoisting crane is in normal operation; When door machine suspension hook 8 rises to 1 collision of safe spacing frame, after the safe spacing frame is held up, striker 41 is rebounded by spring and clashes into the plunger of limit switch 3, limit switch is opened contact and is cut off general supply, mechanism shuts down, suspension hook stop to rise (and the circuit that moves downward is still connected, weight can descend).
Claims (6)
1. spacing alarming device of high pedestal jib crane lifting rope spring type safety; comprise safe spacing frame (1); spacing detector (2); it is characterized in that: the both sides of safe spacing frame (1) hang on the lower boom (6) of crane arm arm head by steel rope (11); spacing detector (2) is installed in the centre of the steel rope (11) of a side; described spacing detector (2) is comprised of the plunger tpe limit switch (3) and the striker system (4) that are installed in the protection box (5); described striker system (4) comprises the spring frame (42) of striker (41) and control striker return, and the locking block (43) that is used for the locking striker.
2. the spacing alarming device of a kind of high pedestal jib crane lifting rope spring type safety according to claim 1, it is characterized in that: described safe spacing frame (1) is the rectangular frame that is welded by four orthogonal channel-section steels, place, short channel-section steel middle position in the rectangular frame both sides respectively is provided with a circular hole (12), is used for fixedly steel rope (11).
3. the spacing alarming device of a kind of high pedestal jib crane lifting rope spring type safety according to claim 1, it is characterized in that: be threaded connection between described striker (41) and the striker locking block (43) and be integral, bottom at locking block (43) has a hole, is used for being connected with steel rope (11).
4. the spacing alarming device of a kind of high pedestal jib crane lifting rope spring type safety according to claim 1; it is characterized in that: the top of described protection box (5) is provided with the link (51) that is connected for steel rope (11); protection box (5) bottom is provided with a circular hole for the Access Control cable; a pair of open contact in control cables and the plunger tpe limit switch (3) be connected after normally closed contact is connected, be communicated with the siren horn of hoisting crane source switch and operator's compartment.
5. the spacing alarming device of a kind of high pedestal jib crane lifting rope spring type safety according to claim 1 and 2, it is characterized in that: it is 10# channel-section steel welding processing that described safe spacing frame (1) adopts model, the length L 3 of rectangular frame is greater than the spacing L1 of the inboard two door machine raising lines of crane hook (7), less than the spacing L2 of the outside two door machines raising line; The inner space width of rectangular frame is 120mm.
6. the spacing alarming device of a kind of high pedestal jib crane lifting rope spring type safety according to claim 1 and 2, it is characterized in that: two door machine raising lines (7) of described crane hook inboard pass the rectangular frame of safe spacing frame (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220522497 CN202848907U (en) | 2012-10-12 | 2012-10-12 | Lifting rope spring type safety limit alarm device for gantry crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220522497 CN202848907U (en) | 2012-10-12 | 2012-10-12 | Lifting rope spring type safety limit alarm device for gantry crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202848907U true CN202848907U (en) | 2013-04-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220522497 Expired - Fee Related CN202848907U (en) | 2012-10-12 | 2012-10-12 | Lifting rope spring type safety limit alarm device for gantry crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202848907U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102897670A (en) * | 2012-10-12 | 2013-01-30 | 中国葛洲坝集团股份有限公司 | Spring type safety limiting caution device for lifting rope of gantry crane |
| CN109311643A (en) * | 2016-01-29 | 2019-02-05 | 吉宝拉图诺美国股份有限公司 | Anti- two pulley blocks contact sensing system |
-
2012
- 2012-10-12 CN CN 201220522497 patent/CN202848907U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102897670A (en) * | 2012-10-12 | 2013-01-30 | 中国葛洲坝集团股份有限公司 | Spring type safety limiting caution device for lifting rope of gantry crane |
| CN102897670B (en) * | 2012-10-12 | 2014-12-10 | 中国葛洲坝集团股份有限公司 | Spring type safety limiting caution device for lifting rope of gantry crane |
| CN109311643A (en) * | 2016-01-29 | 2019-02-05 | 吉宝拉图诺美国股份有限公司 | Anti- two pulley blocks contact sensing system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 Termination date: 20191012 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |