CN113800393A - Steel wire rope balance mechanism with large compensation amount - Google Patents
Steel wire rope balance mechanism with large compensation amount Download PDFInfo
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- CN113800393A CN113800393A CN202111139337.7A CN202111139337A CN113800393A CN 113800393 A CN113800393 A CN 113800393A CN 202111139337 A CN202111139337 A CN 202111139337A CN 113800393 A CN113800393 A CN 113800393A
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- steel wire
- wire rope
- gear
- compensation amount
- rack
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 58
- 239000010959 steel Substances 0.000 title claims abstract description 58
- 230000007246 mechanism Effects 0.000 title claims abstract description 25
- 230000009471 action Effects 0.000 claims abstract description 3
- 230000008859 change Effects 0.000 abstract description 3
- 238000004804 winding Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
- B66C13/06—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for minimising or preventing longitudinal or transverse swinging of loads
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Abstract
A steel wire rope balance mechanism with large compensation amount comprises a gear and a limiting body which are arranged on a trolley frame, wherein the gear can rotate in a vertical plane; a pair of racks is meshed on two sides of the gear, and the racks are connected with the fixed end of the steel wire rope; the rack only has the translation freedom degree in the vertical direction under the action of the limiting body. According to the invention, the gear is meshed with the pair of racks, so that the large compensation adjustment of the steel wire rope is realized. Compared with a lever type balance mechanism, the invention has the following advantages: 1. the compensation amount of the steel wire rope can be greatly increased without the space limitation of a trolley frame; 2. under the same size, the compensation amount is increased by times; 3. the influence on the change of the deflection angle of the steel wire rope is very small, and the lifting stability is ensured. The invention fundamentally breaks through the existing structure and realizes the large compensation adjustment of the steel wire rope.
Description
Technical Field
The invention relates to the field of hoisting, in particular to a steel wire rope balancing mechanism with large compensation amount.
Background
For the safety of lifting, the existing crane mostly adopts a lifting mode of winding multiple steel wire ropes, and compared with the lifting mode of single steel wire ropes, the multi-steel wire rope lifting has larger safety redundancy (when one steel wire rope is broken, other steel wire ropes bear the lifting weight, so that the cargo cannot fall). However, the hoisting of multiple steel wire ropes also brings a problem, the multiple steel wire ropes need to share the hoisting weight equally, the actual lengths of the steel wire ropes are different, and the shared hoisting weight is different, so that the lengths of the steel wire ropes need to be compensated by using a balance mechanism, so that the steel wire ropes are in a tightened state, and the hoisting weight is equally divided.
Most of the existing balance mechanisms are lever-type structures, as shown in fig. 1, two steel wire ropes 2 paid out from a winding drum extend upwards after being wound by a movable pulley and are respectively fixed at two ends of a lever arm 1, and the lengths of the steel wire ropes 2 at two sides are compensated through the swinging of the lever arm 1. The movable pulley is connected with a lifting hook for lifting the goods. This is a typical single point hoisting configuration. As can be seen from fig. 1, the compensation amount of the wire rope 2 is related to the length of the lever arm 1, and the larger the compensation amount of the wire rope 2 is, the longer the lever arm 1 is required, which has a problem in that:
1. due to the space limitation of the trolley frame, the lever arm 1 cannot occupy too large space;
2. the lever arm 1 is lengthened, the strength of the lever arm needs to be enhanced, and the manufacturing cost is improved;
3. the steel wire rope 2 is wound on the movable pulley 3, and when the lever arm 1 swings, the deflection angle of the steel wire rope 2 changes greatly, so that the lifting stability is influenced.
With the diversification of hoisting requirements, the hoisting mechanism is more and more complex. For example, horizontal hoisting of a ladle is limited by the layout requirement of a hoisting mechanism, and a balancing mechanism is required to have a large compensation amount and cannot have the problems, so that the conventional needs are broken through, and a steel wire rope balancing mechanism with a large compensation amount is invented.
Disclosure of Invention
In order to overcome the defects in the background art, the invention discloses a steel wire rope balancing mechanism with large compensation amount, which aims to: the conventional lever type structure is broken through, the deflection angle of the steel wire rope is reduced, and large compensation adjustment of the steel wire rope is realized.
In order to achieve the purpose, the invention adopts the following technical scheme:
a steel wire rope balance mechanism with large compensation amount comprises a gear and a limiting body which are arranged on a trolley frame, wherein the gear can rotate in a vertical plane; a pair of racks is meshed on two sides of the gear, and the racks are connected with the fixed end of the steel wire rope; the rack only has the translation freedom degree in the vertical direction under the action of the limiting body.
Further improve technical scheme, link firmly the gear shaft on the dolly frame, the gear is rotationally connected on the gear shaft.
Further improve technical scheme, be equipped with the connecting hole at the lower extreme of rack, the stiff end of wire rope is connected in the connecting hole.
The technical scheme is further improved, the rack comprises a base body, and the cross section of the base body is rectangular; the limiting body is in the shape of a long groove and is provided with a groove surface in sliding fit with the base body.
The technical scheme is further improved, a stop block is arranged at the upper end of the rack and used for limiting the downward translation distance of the rack.
Further improves the technical proposal that the gear is a straight gear or a herringbone gear.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
according to the invention, the gear is meshed with the pair of racks, so that the large compensation adjustment of the steel wire rope is realized. Compared with a lever type balance mechanism in the background art, the invention has the following advantages:
1. the compensation amount of the steel wire rope can be greatly increased without the space limitation of a trolley frame;
2. under the same size, the compensation amount is increased by times;
3. the influence on the change of the deflection angle of the steel wire rope is very small, and the lifting stability is ensured.
The invention fundamentally breaks through the existing structure and realizes the large compensation adjustment of the steel wire rope.
Drawings
Fig. 1 is a schematic structural diagram of a conventional lever-type balance mechanism.
Fig. 2 is a schematic structural diagram of the present invention.
Fig. 3 is a partial cross-sectional view of fig. 2.
In the figure: 1. a lever arm; 2. a wire rope; 3. a movable pulley; 4. a gear; 5. a rack; 6. a restriction body; 7. a stopper; 8. a shaft seat.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, a detachable connection, or an integral connection. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
A steel wire rope balance mechanism with large compensation amount comprises a gear 4 and a limiting body 6 which are arranged on a trolley frame. Specifically, as shown in fig. 2, a shaft seat 8 is fixedly connected to a trolley frame (not shown in the figure), a horizontal support shaft is arranged on the shaft seat 8, a gear 4 is mounted on the support shaft, and the gear 4 can rotate on the support shaft. A pair of racks 5 are meshed on two sides of the gear 4, connecting holes are formed in the lower ends of the racks 5, and the fixed ends of the steel wire ropes 2 are connected in the connecting holes. Two steel wire ropes 2 are paid out from a winding drum, downwards wound on a movable pulley, upwards extended and respectively fixed in connecting holes of a pair of racks 5. The movable pulley (not shown in the figure) is connected with a lifting hook (not shown in the figure) which is used for hanging goods. This constitutes a complete single-hanging structure.
The trolley frame is also fixedly connected with a limiting body 6, and the limiting body 6 is used for limiting the freedom degree of the rack 5 so that the rack 5 only has the translation freedom degree in the vertical direction. Specifically, as shown in fig. 3, the rack 5 includes a base body having a rectangular cross section and a tooth portion. The limiting body 6 is generally in the shape of a long groove and is provided with a groove surface in sliding fit with the base body. Since the groove surfaces limit the degree of freedom of the base body in the X-direction and the Y-direction, the rack 5 can move only in the vertical direction. It should be noted that the linear movement can be realized in many ways, and that the cross-section of the base body can be designed in other shapes, and that the limiting bodies 6 can be embodied in a plurality of ways, which are not further enumerated here.
When the hoisting weight of the left steel wire rope 2 is smaller than that of the right steel wire rope 2, the right steel wire rope 2 drags the right rack 5 to move downwards, the gear 4 rotates clockwise at the moment, and correspondingly, the left rack 5 moves upwards to tighten the left steel wire rope 2, so that the steel wire ropes 2 on the two sides have the same hoisting weight. On the contrary, when the hoisting weight of the right-side steel wire rope 2 is smaller than that of the left-side steel wire rope 2, the left-side steel wire rope 2 drags the left-side rack 5 to move downwards, the gear 4 rotates anticlockwise at the moment, correspondingly, the right-side rack 5 moves upwards to tighten the right-side steel wire rope 2, and the steel wire ropes 2 on the two sides have the same hoisting weight. Because the gear 4 and the rack 5 bear the hoisting weight, the gear 4 and the rack 5 with wide teeth and large modulus can be adopted to increase the bearing capacity. The gear 4 preferably adopts a straight gear and a herringbone gear, the straight gear is easy to process, and the bearing capacity of the herringbone gear is large. While helical gears generate lateral forces when engaged with helical racks, this is not preferred.
In the lever type balance mechanism in the prior art, if the length of the lever arm 1 is 0.5 m, the maximum compensation amount for the steel wire rope 2 is only 0.5 m (the lever arm 1 is in a vertical state). The balance mechanism of the present invention has a maximum compensation amount of 1 m for the wire rope 2 if the effective stroke of each rack 5 is 0.5 m. Obviously, compared with a lever type balance mechanism, the compensation amount of the invention is multiplied.
It is noted that the lever arm 1 rotates in a vertical plane of the trolley frame, and the lever arm 1 is too long and is limited by the space of the trolley frame or the main beam. The rack 5 of the invention moves along the vertical direction without being limited by the space of the trolley frame, and the space above the main beam of the crane is very large, the rack 5 can be designed to be very long, and the compensation amount can reach several meters. It is also worth noting that, since the distance between the two racks 5 is constant, the influence on the change of the yaw angle of the steel wire rope 2 is small even in the extreme state of the maximum compensation amount, which ensures the stability of the hoisting.
For safety reasons, a stop 7 is provided at the upper end of the rack 5, the stop 7 serving to limit the distance the rack 5 translates downwards. When the steel wire rope 2 on the left side is broken, the steel wire rope 2 on the right side drags the rack 5 on the right side to move downwards, and when the stop dog 7 on the right side is in contact with the limiting body 6, the rack 5 on the right side stops moving, so that the steel wire rope 2 on the right side can still lift the goods. And vice versa.
The details of which are not described in the prior art. Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a wire rope balance mechanism of big compensation volume which characterized by: the device comprises a gear and a limiting body which are arranged on a trolley frame, wherein the gear can rotate in a vertical plane; a pair of racks is meshed on two sides of the gear, and the racks are connected with the fixed end of the steel wire rope; the rack only has the translation freedom degree in the vertical direction under the action of the limiting body.
2. The large compensation amount steel wire rope balancing mechanism of claim 1, wherein: the small frame is fixedly connected with a gear shaft, and the gear is rotatably connected to the gear shaft.
3. The large compensation amount steel wire rope balancing mechanism of claim 1, wherein: the lower end of the rack is provided with a connecting hole, and the fixed end of the steel wire rope is connected in the connecting hole.
4. The large compensation amount steel wire rope balancing mechanism of claim 1, wherein: the rack comprises a base body, wherein the cross section of the base body is rectangular; the limiting body is in the shape of a long groove and is provided with a groove surface in sliding fit with the base body.
5. The large compensation amount steel wire rope balancing mechanism of claim 1, wherein: and a stop block is arranged at the upper end of the rack and used for limiting the downward translation distance of the rack.
6. The large compensation amount steel wire rope balancing mechanism of claim 1, wherein: the gear is a straight gear or a herringbone gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111139337.7A CN113800393A (en) | 2021-09-28 | 2021-09-28 | Steel wire rope balance mechanism with large compensation amount |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111139337.7A CN113800393A (en) | 2021-09-28 | 2021-09-28 | Steel wire rope balance mechanism with large compensation amount |
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| Publication Number | Publication Date |
|---|---|
| CN113800393A true CN113800393A (en) | 2021-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111139337.7A Pending CN113800393A (en) | 2021-09-28 | 2021-09-28 | Steel wire rope balance mechanism with large compensation amount |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0663574U (en) * | 1993-02-18 | 1994-09-09 | 株式会社大林組 | Lifting device |
| CN108996365A (en) * | 2018-06-29 | 2018-12-14 | 中国矿业大学 | A kind of steel wire rope tension self balancing device and its self-balance method |
| CN210163025U (en) * | 2019-06-25 | 2020-03-20 | 常州新武轨道交通新材料有限公司 | Steel wire anti-falling device |
| CN111747303A (en) * | 2020-07-13 | 2020-10-09 | 三一海洋重工有限公司 | Lifting appliance anti-twisting device, lifting and winding system and port crane |
-
2021
- 2021-09-28 CN CN202111139337.7A patent/CN113800393A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0663574U (en) * | 1993-02-18 | 1994-09-09 | 株式会社大林組 | Lifting device |
| CN108996365A (en) * | 2018-06-29 | 2018-12-14 | 中国矿业大学 | A kind of steel wire rope tension self balancing device and its self-balance method |
| CN210163025U (en) * | 2019-06-25 | 2020-03-20 | 常州新武轨道交通新材料有限公司 | Steel wire anti-falling device |
| CN111747303A (en) * | 2020-07-13 | 2020-10-09 | 三一海洋重工有限公司 | Lifting appliance anti-twisting device, lifting and winding system and port crane |
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Application publication date: 20211217 |