CN114132861A - Bidirectional anti-falling lifting mechanism - Google Patents
Bidirectional anti-falling lifting mechanism Download PDFInfo
- Publication number
- CN114132861A CN114132861A CN202111622185.6A CN202111622185A CN114132861A CN 114132861 A CN114132861 A CN 114132861A CN 202111622185 A CN202111622185 A CN 202111622185A CN 114132861 A CN114132861 A CN 114132861A
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- fixed
- seat
- ratchet wheel
- bearing
- pawl
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/54—Safety gear
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/02—Driving gear
- B66D1/14—Power transmissions between power sources and drums or barrels
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
- Handcart (AREA)
Abstract
The invention discloses a bidirectional anti-falling lifting mechanism, wherein a left bearing seat, a right bearing seat and a fixed seat are respectively fixed on a bottom plate, and the fixed seat is positioned between the left bearing seat and the right bearing seat; the main shaft is rotatably fixed in the left and right bearing seats through a left bearing and a right bearing, and a wrench is fixed at the left end or/and the right end of the main shaft; the wire wheel, the left ratchet wheel and the right ratchet wheel are sequentially sleeved and fixed on the main shaft, the wire wheel is positioned outside the fixed seat, and the left ratchet wheel and the right ratchet wheel are positioned in the fixed seat; a steel wire rope is wound on the wire wheel; a pawl device capable of moving left and right is fixed at the front end in the fixed seat, and a cover plate I is fixed on the upper end face of the fixed seat; the left pawl device moving left and right moves left to a proper position and then is fixed, and the left pawl is clamped on the left ratchet wheel, so that the left ratchet wheel can only rotate anticlockwise/clockwise; the pawl device moving left and right moves right to a proper position and then is fixed, and the right pawl is clamped on the left ratchet wheel, so that the right ratchet wheel can only rotate clockwise/anticlockwise. The invention has the advantages of bidirectional falling prevention, high use safety and reliability, simple structure and convenient installation and operation.
Description
Technical Field
The invention belongs to the field of lifting devices, and relates to a falling-preventing lifting mechanism.
Background
Nowadays, the development of each industry is different day by day, along with the progress of science and technology and the development of society, higher and higher requirements are provided for the safe operation in the production field and daily life, a crane in a general production field cannot be covered comprehensively, some places need to be hoisted by people manually, however, no proper hoisting tool is provided, people often do some simple hoisting tools, but potential safety hazards exist, and therefore, the need of researching a manual anti-falling lifting mechanism with simple structure and high safety and reliability is very necessary.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provide a bidirectional anti-falling lifting mechanism which is high in use safety and reliability, simple in structure and convenient to install and operate.
In order to achieve the purpose, the technical solution of the invention is as follows: a bidirectional anti-falling lifting mechanism comprises a bottom plate, a fixed seat, a main shaft, a left bearing seat, a right bearing seat, a left ratchet wheel, a right ratchet wheel, a wire wheel and a pawl device capable of moving left and right; the left bearing seat, the right bearing seat and the fixed seat are respectively fixed on the bottom plate, and the fixed seat is positioned between the left bearing seat and the right bearing seat; the main shaft is rotatably fixed in the left and right bearing seats through a left bearing and a right bearing, and a wrench is fixed at the left end or/and the right end of the main shaft; the wire wheel, the left ratchet wheel and the right ratchet wheel are sequentially sleeved and fixed on the main shaft, the wire wheel is positioned outside the fixed seat, and the left ratchet wheel and the right ratchet wheel are positioned in the fixed seat; a steel wire rope is wound on the wire wheel; a pawl device capable of moving left and right is fixed at the front end in the fixed seat, and a cover plate I is fixed on the upper end face of the fixed seat; the pawl device is fixed after moving to the left in place, and the left pawl is clamped on the left ratchet wheel, so that the left ratchet wheel can only rotate anticlockwise/clockwise; the pawl device is fixed after moving right to the right position, and the right pawl is clamped on the right ratchet wheel, so that the right ratchet wheel can only rotate clockwise/anticlockwise.
Further preferably, the pawl device comprises a guide seat, a left Z-shaped eccentric rotation preventing shaft, a right Z-shaped eccentric rotation preventing shaft, a handle and a connecting piece; the guide seat is fixed at the front end in the fixed seat, the rear end of the guide seat is provided with a through long guide hole, two sides of the rear end of the guide seat are provided with an anti-rotation groove I and an anti-rotation groove II which are communicated with the guide hole, the front end of the guide seat is provided with an installation groove, and a cover plate II is arranged in the installation groove; the middle parts of the mounting groove and the cover plate II are provided with communicated reversed U-shaped limiting grooves; the n-shaped limiting groove is communicated with the guide hole, and the lower end part of the n-shaped limiting groove is a left limiting groove and a right limiting groove respectively; the connecting piece is a shaft with thick middle part and two ends extending out of the T-shaped shaft; the left and right Z-shaped eccentric rotation-preventing shafts are arranged in guide holes of the guide seat and connected by a connecting piece, and T-shaped shafts at two ends of the connecting piece are sleeved into T-shaped grooves of the left and right Z-shaped eccentric rotation-preventing shafts and are in clearance fit with the T-shaped grooves; the handle consists of a vertical shaft, a transverse shaft hinged with the vertical shaft and a handle fixed at the tail end of the transverse shaft; the vertical shaft of the handle is inserted and fixed on the middle thick shaft of the connecting piece; the left end of the left Z-shaped eccentric rotation preventing shaft is a left pawl, the right end of the right Z-shaped eccentric rotation preventing shaft is a right pawl, wherein the upper end of a tension spring I fixed on the left or right pawl is hooked on an upper tension spring connecting rod fixed on the guide seat, and the lower end of a tension spring II fixed on the right or left pawl is hooked on a lower tension spring connecting rod fixed on the guide seat. Pulling the handle to push the left and right Z-shaped eccentric rotation preventing shafts to move leftwards or rightwards synchronously, pressing the handle to enable the vertical shaft of the handle to enter the left or right limiting groove of the Pi-shaped limiting groove when the left pawl or the right pawl of the left or right Z-shaped eccentric rotation preventing shaft is clamped on the left or right ratchet wheel, enabling the left or right ratchet wheel to rotate along one clockwise or anticlockwise direction and stop in the other direction, and thus achieving the purpose of bidirectional falling prevention.
Further preferably, two ends of the left bearing seat are respectively fixed on the bottom plate through two fifth screws and a third cylindrical pin; two ends of the right bearing seat are fixed on the bottom plate through two second screws and a second cylindrical pin respectively; and two ends of the fixed seat are respectively fixed on the bottom plate through a first cylindrical pin and three first screws. The cylindrical pin is used for positioning, the screw is used for fixing, the positioning is accurate, and the installation is convenient.
Further preferably, a left bearing end cover is fixed at the right end of the left bearing seat through a sixth screw, a left blanking cover is fixed at the left end of the left bearing seat through a seventh screw, and a left bearing is pressed between the left bearing end cover and the left blanking cover; and the left end of the right bearing seat is fixed with a right bearing end cover through a third screw, the right end of the right bearing seat is fixed with a right blanking cover through a fourth screw, and the right bearing is pressed between the right bearing end cover and the right blanking cover. The installation is dismantled conveniently, and fixed reliability is high.
Further preferably, the wire wheel, the left ratchet wheel and the right ratchet wheel are sequentially sleeved and fixed on the main shaft through a third flat key, a second flat key and the first flat key respectively.
In the invention, when the main shaft needs to rotate clockwise, the pawl device moving left and right moves left or right to be positioned, and the left pawl or the right pawl is clamped on the left ratchet wheel or the right ratchet wheel, so that the left ratchet wheel or the right ratchet wheel can only rotate clockwise, and the left ratchet wheel or the right ratchet wheel is in a stop state in the anticlockwise direction; on the contrary, when the shaft needs to rotate anticlockwise, the pawl device moving leftwards or rightwards moves to a proper position and then is fixed, and the right pawl or the left pawl is clamped on the right ratchet wheel or the left ratchet wheel, so that the right ratchet wheel or the left ratchet wheel can only rotate anticlockwise, and is in a stop state in the clockwise direction. Therefore, the bidirectional anti-falling mechanism has a simple structure, is convenient to install and operate, and can meet the use requirements of people on any occasions.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic perspective view of the present invention with the guide seat removed;
FIG. 3 is a front view of the present invention;
FIG. 4 is a cross-sectional view AA in FIG. 3;
FIG. 5 is a top view of the present invention;
FIG. 6 is a cross-sectional view BB of FIG. 5;
FIG. 7 is a cross-sectional view CC of FIG. 5;
FIG. 8 is a cross-sectional view DD of FIG. 5;
FIG. 9 is a cross-sectional view of EE of FIG. 5;
FIG. 10 is a perspective view of the guide seat and the pawl device of the present invention;
FIG. 11 is a front view of the guide housing of the present invention;
FIG. 12 is a left side view of the guide shoe of the present invention;
fig. 13 is a right side view of the guide shoe of the present invention.
Detailed Description
The invention is further described with reference to the accompanying drawings and the detailed description.
As shown in fig. 1 to 13, the present embodiment includes a base plate 1, a fixed base 2, a main shaft 13, left and right bearing blocks 33, 5, left and right ratchets 20, 15, a reel 23, and a pawl device capable of moving left and right. The surface of the bottom plate 1 is provided with a step hole, so that the invention can be integrally fixed on other supporting planes. The left and right bearing seats 33 and the fixed seat 2 are respectively fixed on the bottom plate 1, and the fixed seat 2 is positioned between the left and right bearing seats 33; preferably, both ends of the left bearing block 33 are respectively fixed on the bottom plate 1 through two fifth screws 25 and a third cylindrical pin 26; two ends of the right bearing block 5 are respectively fixed on the bottom plate 1 through two second screws 6 and a second cylindrical pin 7; two ends of the fixed seat 2 are respectively fixed on the bottom plate 1 through a first cylindrical pin 3 and three first screws 4. The main shaft 13 is rotatably fixed in left and right bearing blocks 33, 5 by left and right bearings 29 and 10, and a wrench 32 is fixed to the left or/and right ends thereof. Preferably, the right end of the left bearing seat 33 is fixed with a left bearing end cover 28 through a sixth screw 27, the left end is fixed with a left blanking cover 31 through a seventh screw 30, and the left bearing 29 is pressed between the left bearing end cover 28 and the left blanking cover 31; the left end of the right bearing seat 5 is fixed with a right bearing end cover 9 through a third screw 8, the right end of the right bearing seat is fixed with a right plug cover 11 through a fourth screw 12, and a right bearing 10 is pressed between the right bearing end cover 9 and the right plug cover 11. The wire wheel 23, the left ratchet wheel 20 and the right ratchet wheel 15 are sequentially sleeved and fixed on the main shaft 13, and preferably, the wire wheel 23, the left ratchet wheel 20 and the right ratchet wheel 15 are sequentially sleeved and fixed on the main shaft 13 through a third flat key 24, a second flat key 22 and a first flat key 14 respectively. The reel 23 is located outside the fixed seat 2, and the left and right ratchets 20 and 15 are located in the fixed seat 2. The wire wheel 23 is wound with a steel wire rope. A pawl device capable of moving left and right is fixed at the front end in the fixed seat 2, and a cover plate I37 is fixed on the upper end face of the fixed seat through an eighth screw 38. The pawl device moving left and right moves left to right, and the left pawl is clamped on the left ratchet wheel 20, so that the left ratchet wheel 20 can only rotate anticlockwise/clockwise; the pawl device moving left and right moves right to a proper position, and the right pawl is clamped on the left ratchet wheel 15, so that the right ratchet wheel 15 can only rotate clockwise/anticlockwise. Preferably, the left-right moving pawl device comprises a guide seat 34, left and right Z-shaped eccentric rotation preventing shafts 18 and 16, a handle 17 and a connecting piece 36. The guide seat 34 is fixed at the front end in the fixed seat 2 through a ninth screw 41, the rear end of the guide seat is provided with a through long guide hole 43, two sides of the rear end of the guide seat are provided with an anti-rotation groove I45 and an anti-rotation groove II 44 which are communicated with the guide hole 43, the front end of the guide seat is provided with a mounting groove, and a cover plate II 35 is mounted in the mounting groove through a tenth screw 42. The middle parts of the mounting groove and the cover plate II 35 are provided with communicated reversed U-shaped limiting grooves; the n-shaped limiting groove is communicated with the guide hole 43, and the lower end part of the n-shaped limiting groove is respectively provided with a left limiting groove 46 and a right limiting groove 47; the connecting piece 36 is a shaft with a thick middle part and two ends extending out of the T-shaped shaft; the left and right Z-shaped eccentric rotation preventing shafts 18 and 16 are arranged in the guide holes 43 of the guide seat 34 and connected by the connecting piece 36, and T-shaped shafts at two ends of the connecting piece 36 are sleeved in T-shaped grooves of the left and right Z-shaped eccentric rotation preventing shafts 18 and 16 and are in clearance fit with the T-shaped grooves; the handle 17 consists of a vertical shaft, a horizontal shaft hinged with the vertical shaft and a handle fixed at the tail end of the horizontal shaft; the vertical shaft of the handle 17 is inserted and fixed on the middle thick shaft of the connecting piece 36; the two ends of the left Z-shaped eccentric rotation preventing shaft 18 and the right Z-shaped eccentric rotation preventing shaft 16 are respectively provided with a pawl, the upper end of a tension spring I19 fixed on one pawl is hooked on an upper tension spring connecting rod 39 fixed on the guide seat 34, and the lower end of a tension spring II 21 fixed on the other pawl is hooked on a lower tension spring connecting rod 40 fixed on the guide seat 34. Pulling the handle 17 to push the left and right Z-shaped eccentric rotation preventing shafts 18 and 16 to move leftwards or rightwards, pressing the handle 17 to make the vertical shaft enter the left or right limiting groove 46 or 47 of the Pi-shaped limiting groove when the pawl moving to the left or right Z-shaped eccentric rotation preventing shaft 18 or 16 is clamped on the left or right ratchet wheel 20 or 15, and making the left or right ratchet wheel only rotate along one direction of clockwise or anticlockwise and stop along the other direction, thereby achieving the purpose of bidirectional falling prevention.
There are, of course, many other embodiments of the invention and modifications and variations of this invention that will be obvious to those skilled in the art may be made without departing from the spirit and scope of the invention, but it is intended to cover all such modifications and variations as fall within the true spirit and scope of the invention.
Claims (9)
1. The utility model provides a bidirectional falling-preventing lifting mechanism which characterized in that: comprises a bottom plate, a fixed seat, a main shaft, a left bearing seat, a right bearing seat, a left ratchet wheel, a right ratchet wheel, a wire wheel and a pawl device capable of moving left and right; the left bearing seat, the right bearing seat and the fixed seat are respectively fixed on the bottom plate, and the fixed seat is positioned between the left bearing seat and the right bearing seat; the main shaft is rotatably fixed in the left and right bearing seats through a left bearing and a right bearing, and a wrench is fixed at the left end or/and the right end of the main shaft; the wire wheel, the left ratchet wheel and the right ratchet wheel are sequentially sleeved and fixed on the main shaft, the wire wheel is positioned outside the fixed seat, and the left ratchet wheel and the right ratchet wheel are positioned in the fixed seat; a steel wire rope is wound on the wire wheel; a pawl device capable of moving left and right is fixed at the front end in the fixed seat, and a cover plate I is fixed on the upper end face of the fixed seat; the pawl device is fixed after moving to the left in place, and the left pawl is clamped on the left ratchet wheel, so that the left ratchet wheel can only rotate anticlockwise/clockwise; the pawl device is fixed after moving right to the right position, and the right pawl is clamped on the right ratchet wheel, so that the right ratchet wheel can only rotate clockwise/anticlockwise.
2. The bi-directional fall arrest lifting mechanism of claim 1, characterized in that: the pawl device comprises a guide seat, a left Z-shaped eccentric rotation preventing shaft, a right Z-shaped eccentric rotation preventing shaft, a handle and a connecting piece; the guide seat is fixed at the front end in the fixed seat, the rear end of the guide seat is provided with a through long guide hole, two sides of the rear end of the guide seat are provided with an anti-rotation groove I and an anti-rotation groove II which are communicated with the guide hole, the front end of the guide seat is provided with an installation groove, and a cover plate II is arranged in the installation groove; the middle parts of the mounting groove and the cover plate II are provided with communicated reversed U-shaped limiting grooves; the n-shaped limiting groove is communicated with the guide hole, and the lower end part of the n-shaped limiting groove is a left limiting groove and a right limiting groove respectively; the connecting piece is a shaft with thick middle part and two ends extending out of the T-shaped shaft; the left and right Z-shaped eccentric rotation-preventing shafts are arranged in guide holes of the guide seat and connected by a connecting piece, and T-shaped shafts at two ends of the connecting piece are sleeved into T-shaped grooves of the left and right Z-shaped eccentric rotation-preventing shafts and are in clearance fit with the T-shaped grooves; the handle consists of a vertical shaft, a transverse shaft hinged with the vertical shaft and a handle fixed at the tail end of the transverse shaft; the vertical shaft of the handle is inserted and fixed on the middle thick shaft of the connecting piece; the left end of the left Z-shaped eccentric rotation preventing shaft is a left pawl, the right end of the right Z-shaped eccentric rotation preventing shaft is a right pawl, wherein the upper end of a tension spring I fixed on the left or right pawl is hooked on an upper tension spring connecting rod fixed on the guide seat, and the lower end of a tension spring II fixed on the right or left pawl is hooked on a lower tension spring connecting rod fixed on the guide seat.
3. The bi-directional fall arrest lifting mechanism according to claim 1 or 2, characterized in that: two ends of the left bearing seat are fixed on the bottom plate through two fifth screws and a third cylindrical pin respectively; two ends of the right bearing seat are fixed on the bottom plate through two second screws and a second cylindrical pin respectively; and two ends of the fixed seat are respectively fixed on the bottom plate through a first cylindrical pin and three first screws.
4. The bi-directional fall arrest lifting mechanism of claim 3, characterized in that: the right end of the left bearing seat is fixed with a left bearing end cover through a sixth screw, the left end of the left bearing seat is fixed with a left blanking cover through a seventh screw, and a left bearing is pressed between the left bearing end cover and the left blanking cover; and the left end of the right bearing seat is fixed with a right bearing end cover through a third screw, the right end of the right bearing seat is fixed with a right blanking cover through a fourth screw, and the right bearing is pressed between the right bearing end cover and the right blanking cover.
5. The bi-directional fall arrest lifting mechanism of claim 4, wherein: the wire wheel, the left ratchet wheel and the right ratchet wheel are sequentially sleeved and fixed on the main shaft through a third flat key, a second flat key and a first flat key respectively.
6. The bi-directional fall arrest lifting mechanism according to claim 1 or 2, characterized in that: the right end of the left bearing seat is fixed with a left bearing end cover through a sixth screw, the left end of the left bearing seat is fixed with a left blanking cover through a seventh screw, and a left bearing is pressed between the left bearing end cover and the left blanking cover; and the left end of the right bearing seat is fixed with a right bearing end cover through a third screw, the right end of the right bearing seat is fixed with a right blanking cover through a fourth screw, and the right bearing is pressed between the right bearing end cover and the right blanking cover.
7. The bi-directional fall arrest lifting mechanism of claim 6, characterized in that: the wire wheel, the left ratchet wheel and the right ratchet wheel are sequentially sleeved and fixed on the main shaft through a third flat key, a second flat key and a first flat key respectively.
8. The bi-directional fall arrest lifting mechanism of claim 3, characterized in that: the wire wheel, the left ratchet wheel and the right ratchet wheel are sequentially sleeved and fixed on the main shaft through a third flat key, a second flat key and a first flat key respectively.
9. The bi-directional fall arrest lifting mechanism according to claim 1 or 2, characterized in that: the wire wheel, the left ratchet wheel and the right ratchet wheel are sequentially sleeved and fixed on the main shaft through a third flat key, a second flat key and a first flat key respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111622185.6A CN114132861B (en) | 2021-12-28 | 2021-12-28 | Bidirectional anti-falling lifting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111622185.6A CN114132861B (en) | 2021-12-28 | 2021-12-28 | Bidirectional anti-falling lifting mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114132861A true CN114132861A (en) | 2022-03-04 |
| CN114132861B CN114132861B (en) | 2023-09-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111622185.6A Active CN114132861B (en) | 2021-12-28 | 2021-12-28 | Bidirectional anti-falling lifting mechanism |
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| Country | Link |
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| CN (1) | CN114132861B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115875382A (en) * | 2023-03-08 | 2023-03-31 | 深圳市新凯来技术有限公司 | Coupling device |
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| CN103171985A (en) * | 2013-04-03 | 2013-06-26 | 北京诺安舟应急缓降机械装置有限公司 | Heavy ascending-descending putting-releasing device |
| CN203095495U (en) * | 2013-02-05 | 2013-07-31 | 常熟市日久重工机械有限公司 | Winch for braking security type ship |
| CN106193737A (en) * | 2016-08-24 | 2016-12-07 | 湖南泰安智能立体车库设备有限公司 | A kind of falling-prevention protecting device and there is the multi-storied garage of anti-fall insurance function |
| CN207142721U (en) * | 2017-07-14 | 2018-03-27 | 河南中烟工业有限责任公司 | A kind of Novel submersible pump lifting device |
| CN212204443U (en) * | 2020-04-28 | 2020-12-22 | 广东石川重工有限公司 | Lifting mechanism for lamp car |
| CN112320602A (en) * | 2020-09-29 | 2021-02-05 | 安塔(福建)机械设备实业有限公司 | A play to rise wire rope and prevent disconnected rope device for tower crane |
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2021
- 2021-12-28 CN CN202111622185.6A patent/CN114132861B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN203095495U (en) * | 2013-02-05 | 2013-07-31 | 常熟市日久重工机械有限公司 | Winch for braking security type ship |
| CN103171985A (en) * | 2013-04-03 | 2013-06-26 | 北京诺安舟应急缓降机械装置有限公司 | Heavy ascending-descending putting-releasing device |
| CN106193737A (en) * | 2016-08-24 | 2016-12-07 | 湖南泰安智能立体车库设备有限公司 | A kind of falling-prevention protecting device and there is the multi-storied garage of anti-fall insurance function |
| CN207142721U (en) * | 2017-07-14 | 2018-03-27 | 河南中烟工业有限责任公司 | A kind of Novel submersible pump lifting device |
| CN212204443U (en) * | 2020-04-28 | 2020-12-22 | 广东石川重工有限公司 | Lifting mechanism for lamp car |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115875382A (en) * | 2023-03-08 | 2023-03-31 | 深圳市新凯来技术有限公司 | Coupling device |
| CN115875382B (en) * | 2023-03-08 | 2023-05-02 | 深圳市新凯来技术有限公司 | Coupling device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114132861B (en) | 2023-09-15 |
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