CN203255909U - Lifting limiting device for crane - Google Patents
Lifting limiting device for crane Download PDFInfo
- Publication number
- CN203255909U CN203255909U CN 201320269171 CN201320269171U CN203255909U CN 203255909 U CN203255909 U CN 203255909U CN 201320269171 CN201320269171 CN 201320269171 CN 201320269171 U CN201320269171 U CN 201320269171U CN 203255909 U CN203255909 U CN 203255909U
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- China
- Prior art keywords
- worm
- shaft
- cam
- bearing
- casing
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- Expired - Fee Related
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Abstract
The utility model relates to a lifting limiting device for a crane. The lifting limiting device comprises a winding drum and a box body, wherein the winding drum is mounted on a winding drum shaft, and the winding drum shaft is fixed by a bearing seat; a worm shaft penetrates through the lower part of the box body, two ends of the worm shaft are respectively mounted on the box body through bearing devices, one end of the worm shaft stretches out of the box body and is connected with the winding drum shaft through a key, and a connecting plate is mounted at the bearing device and is fixed on the bearing seat through a third bolt; a first bearing cover plate is mounted at the bearing device at the other end of the worm shaft through a second bolt; a worm wheel meshed with a worm rod on the worm shaft is located in the box body and is mounted on the worm shaft, two ends of the worm shaft are respectively fixed on the box body through bearings, second bearing cover plates are mounted at the bearings, and a first cam and a second cam are mounted at two ends of the worm shaft; and an upper limiting switch is mounted at the bottom of the first cam, and a lower limiting switch is mounted at the bottom of the second cam. The lifting limiting device for the crane is good in reliability, small in size and flexible and reliable in use.
Description
Technical field
The utility model relates to the technical field of weight-lifting equipment, especially a kind of crane hoisting inhibiting device.
Background technology
For preventing that hoist lifting hook from rushing to summit, adopt the lifting attitude of winding drum killer in the prior art.According to the diameter of hook limiting altitude and reel, calculate the number of turns that steel wire can twine on reel, starting limits can twine the end position of maximum steel wires in reel thereby will report to the police.When the weight that is raised during near limiting altitude, this warning device then sends the sound and light alarm signal automatically, when reaching capacity height, automatically cuts off immediately the power supply that hoists, and reel stops to promote.This version must be passed through accurate Calculation before use, if be applied to different occasions, then needs to recomputate the number of turns that steel wire can twine on reel, determines that the startup of warning device is limited, troublesome poeration.And the upper limit effect that this inhibiting device can only hoist, poor reliability.
The utility model content
The applicant can only play the insecure shortcoming of upper limit for the inhibiting device that hoists in the above-mentioned existing production technology, another kind of crane hoisting inhibiting device is provided, thereby can realizes easily upper limit effect, lower limit effect, realize bidirectionally limited function, volume is little, and is spacing reliable.
The technical scheme that the utility model adopts is as follows:
A kind of crane hoisting inhibiting device comprises reel, and described reel is installed on the drum shaft, and described drum shaft is fixed by bearing seat; Also comprise casing, described lower box passes a worm shaft, the two ends of described worm shaft are installed on the casing by bearing arrangement respectively, one end of described worm shaft stretches out casing and is connected with drum shaft by key, and at its bearing arrangement place connecting panel being installed, described connecting panel is fixed on the bearing seat by the 3rd bolt; The bearing arrangement place of the other end of described worm shaft is equipped with the clutch shaft bearing cover plate by the second bolt; Be positioned at casing, be equipped with worm shaft on the worm gear of worm mesh, described worm gear is installed on the worm-wheel shaft, the two ends of described worm-wheel shaft are fixed on the casing by bearing respectively, described bearing place all is equipped with the second bearing cover, and the two ends that are positioned at worm-wheel shaft are equipped with the first cam and the second cam; The bottom of described the first cam is provided with upper limit position switch, and the bottom of described the second cam is provided with lower position switch; Be positioned at the casing top and by the first bolt cover plate be installed.
As further improvement in the technical proposal:
Cover plate is installed by oil sealing in described casing top;
The bossing of described the first cam and upper limit position switch butt;
The bossing of described the second cam and lower position switch butt.
The beneficial effects of the utility model are as follows:
The utility model is rational in infrastructure, easy and simple to handle, engaged transmission by worm and gear, the first cam that is installed on the worm-wheel shaft two ends forms switch with upper limit respectively with the second cam and contacts with lower limit formation switch, thereby that has realized easily hoisting is bidirectionally limited, spacing good reliability, volume is little, uses flexibility and reliability.
Description of drawings
Fig. 1 is front view of the present utility model.
Fig. 2 is that the A of Fig. 1 is to view.
Wherein: 1, reel; 2, drum shaft; 3, bearing seat; 4, key; 5, connecting panel; 6, worm gear; 7, cover plate; 8, the first bolt; 9, worm-wheel shaft; 10, clutch shaft bearing cover plate; 11, the second bolt; 12, casing; 13, worm screw; 14, worm shaft; 15, the first cam; 16, the second bearing cover; 17, bearing; 18, the second cam; 19, the 3rd bolt.
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described.
As depicted in figs. 1 and 2, the crane hoisting inhibiting device of present embodiment comprises reel 1, and reel 1 is installed on the drum shaft 2, and drum shaft 2 is fixing by bearing seat 3; Also comprise casing 12, a worm shaft 14 is passed in casing 12 bottoms, the two ends of worm shaft 14 are installed on the casing 12 by bearing arrangement respectively, one end of worm shaft 14 stretches out casing 12 and is connected with drum shaft 2 by key 4, and at its bearing arrangement place connecting panel 5 being installed, connecting panel 5 is fixed on the bearing seat 3 by the 3rd bolt 19; The bearing arrangement place of the other end of worm shaft 14 is equipped with clutch shaft bearing cover plate 10 by the second bolt 11; Be positioned at casing 12, be equipped with worm shaft 14 on the worm gear 6 of worm screw 13 engagement, worm gear 6 is installed on the worm-wheel shaft 9, the two ends of worm-wheel shaft 9 are fixed on the casing 12 by bearing 17 respectively, described bearing 17 places all are equipped with the second bearing cover 16, and the two ends that are positioned at worm-wheel shaft 9 are equipped with the first cam 15 and the second cam 18; The bottom of the first cam 15 is provided with upper limit position switch, and the bottom of the second cam 18 is provided with lower position switch; Be positioned at casing 12 tops and by the first bolt 8 cover plate 7 be installed.
The bossing of the first cam 15 and upper limit position switch butt.
The bossing of the second cam 18 and lower position switch butt.
In the actual use procedure, when hoisting, reel 1 rotates, and drum shaft 2 is also rotated, and the rotation of drum shaft 2 drives worm screw 13 and rotates, and the rotation of worm screw 13 drives worm gear 6 and rotates, and worm gear 6 drives two ends the first cam 15 by worm-wheel shaft 9 and the second cam 18 rotates; Adjust the position of the first cam 15 this moment, withstand when hoisting upper limit position switch when the first cam 15 turns to its projection part, then play the effect of the upper limit that hoists.In like manner, adjust the position of the second cam 18, when reel 1 counter-rotation, the second cam 18 turns to its projection part and withstands when hoisting lower position switch, plays the effect of the lower limit that hoists.Realize easily bidirectionally limited.
The variation of lifting altitude of the present utility model can recently be adjusted by the transmission of worm and gear.
More than describing is to explanation of the present utility model, is not the restriction to utility model, and the utility model limited range within protection domain of the present utility model, can be done any type of modification referring to claim.
Claims (4)
1. a crane hoisting inhibiting device comprises reel (1), it is characterized in that: described reel (1) is installed on the drum shaft (2), and described drum shaft (2) is fixing by bearing seat (3); Also comprise casing (12), a worm shaft (14) is passed in described casing (12) bottom, the two ends of described worm shaft (14) are installed on the casing (12) by bearing arrangement respectively, one end of described worm shaft (14) stretches out casing (12) and is connected with drum shaft (2) by key (4), and at its bearing arrangement place connecting panel (5) being installed, described connecting panel (5) is fixed on the bearing seat (3) by the 3rd bolt (19); The bearing arrangement place of the other end of described worm shaft (14) is equipped with clutch shaft bearing cover plate (10) by the second bolt (11); Be positioned at casing (12), be equipped with worm shaft (14) on the worm gear (6) of worm screw (13) engagement, described worm gear (6) is installed on the worm-wheel shaft (9), the two ends of described worm-wheel shaft (9) are fixed on the casing (12) by bearing (17) respectively, described bearing (17) locates all to be equipped with the second bearing cover (16), and the two ends that are positioned at worm-wheel shaft (9) are equipped with the first cam (15) and the second cam (18); The bottom of described the first cam (15) is provided with upper limit position switch, and the bottom of described the second cam (18) is provided with lower position switch; Be positioned at casing (12) top and by the first bolt (8) cover plate (7) be installed.
2. crane hoisting inhibiting device as claimed in claim 1, it is characterized in that: cover plate (7) is installed by oil sealing in described casing (12) top.
3. crane hoisting inhibiting device as claimed in claim 1 is characterized in that: the bossing of described the first cam (15) and upper limit position switch butt.
4. crane hoisting inhibiting device as claimed in claim 1 is characterized in that: the bossing of described the second cam (18) and lower position switch butt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320269171 CN203255909U (en) | 2013-05-17 | 2013-05-17 | Lifting limiting device for crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320269171 CN203255909U (en) | 2013-05-17 | 2013-05-17 | Lifting limiting device for crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203255909U true CN203255909U (en) | 2013-10-30 |
Family
ID=49468494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320269171 Expired - Fee Related CN203255909U (en) | 2013-05-17 | 2013-05-17 | Lifting limiting device for crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203255909U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108313910A (en) * | 2018-03-05 | 2018-07-24 | 苏州库力铁重工有限公司 | Lifting height limiter and reel-splicing device |
| CN108502766A (en) * | 2018-03-05 | 2018-09-07 | 苏州库力铁重工有限公司 | Single-beam steel-wire rope type electric block and its packaging technology |
| CN111196575A (en) * | 2018-11-16 | 2020-05-26 | 中冶宝钢技术服务有限公司 | Limiting mechanism for crane |
-
2013
- 2013-05-17 CN CN 201320269171 patent/CN203255909U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108313910A (en) * | 2018-03-05 | 2018-07-24 | 苏州库力铁重工有限公司 | Lifting height limiter and reel-splicing device |
| CN108502766A (en) * | 2018-03-05 | 2018-09-07 | 苏州库力铁重工有限公司 | Single-beam steel-wire rope type electric block and its packaging technology |
| CN108313910B (en) * | 2018-03-05 | 2023-12-26 | 苏州库力铁重工有限公司 | Lifting height limiter and reel connecting device |
| CN108502766B (en) * | 2018-03-05 | 2024-03-12 | 苏州库力铁重工有限公司 | Single-beam steel wire rope electric hoist and assembly process thereof |
| CN111196575A (en) * | 2018-11-16 | 2020-05-26 | 中冶宝钢技术服务有限公司 | Limiting mechanism for crane |
| CN111196575B (en) * | 2018-11-16 | 2021-06-08 | 中冶宝钢技术服务有限公司 | Limiting mechanism for crane |
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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: 20131030 Termination date: 20190517 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |