CN113291952A - Large-load elevator without machine room - Google Patents
Large-load elevator without machine room Download PDFInfo
- Publication number
- CN113291952A CN113291952A CN202110478284.5A CN202110478284A CN113291952A CN 113291952 A CN113291952 A CN 113291952A CN 202110478284 A CN202110478284 A CN 202110478284A CN 113291952 A CN113291952 A CN 113291952A
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- CN
- China
- Prior art keywords
- groove
- traction
- fixed pulley
- hoistway
- movable pulley
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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.)
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/0035—Arrangement of driving gear, e.g. location or support
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/0065—Roping
- B66B11/008—Roping with hoisting rope or cable operated by frictional engagement with a winding drum or sheave
- B66B11/0095—Roping with hoisting rope or cable operated by frictional engagement with a winding drum or sheave where multiple cars drive in the same hoist way
Abstract
The invention discloses a large-load elevator without a machine room, which comprises a hoistway, wherein a car is arranged in the hoistway, one side of the car is provided with a counterweight, the car is provided with three first movable pulley blocks, the top of the counterweight is provided with three second movable pulley blocks, the top of the hoistway is provided with three first fixed pulley blocks, the top of the hoistway is provided with three second fixed pulley blocks, the bottom of the hoistway is provided with a traction machine, the traction machine is provided with a traction wheel, one side of the traction wheel is provided with a third fixed pulley block, the other side of the traction wheel is provided with a fourth fixed pulley block, the traction wheel is provided with a traction rope, one end of the traction rope passes through the third fixed pulley block and then alternately bypasses the first fixed pulley block and the first movable pulley block, the other end of the traction rope bypasses the fourth fixed pulley block and then alternately bypasses the second fixed pulley block and the second movable pulley block, and the two ends of the traction rope. The invention has the advantages of large carrying capacity, easy installation, easy maintenance and difficult occurrence of safety accidents.
Description
Technical Field
The invention belongs to the field of elevator without machine room, and particularly relates to a large-load elevator without machine room.
Background
Many buildings require flat roofs, and for such buildings, machine room elevators cannot be installed, and only machine room-less elevators can be used. The traction ratio adopted by the existing elevator without machine room is usually 2: 1 or 4: 1, the load capacity of the elevator is small, the maximum load capacity of the elevator without a machine room in the current market is not more than 5 tons, and the requirement of the market for large load capacity is difficult to meet. The tractor of the existing machine room-less elevator is usually arranged at the top of a hoistway through a beam frame and is in a high-altitude state, and the weight of the tractor is very large, so that the installation and subsequent maintenance of the tractor are difficult, namely the installation and maintenance of the machine room-less elevator are difficult. In current no computer lab elevator, the driving sheave both sides of hauler are car and counter weight respectively, and the driving sheave passes through the towline and drives the car and rise in opposite directions with the counter weight, and the driving sheave receives car weight and counter weight dual function, receives very big downward pressure, including hauler self weight for the hauler has the risk of dropping, and when the hauler dropped, the route that drops of hauler passed through the car, leads to the car to fall, causes serious incident.
Therefore, the existing elevator without the machine room has the defects of small load, difficult installation and maintenance and easy occurrence of serious safety accidents.
Disclosure of Invention
The invention aims to provide a large-load elevator without a machine room. The invention has the advantages of large carrying capacity, easy installation, easy maintenance and difficult occurrence of safety accidents.
The technical scheme of the invention is as follows: the elevator without the machine room for large loads comprises a hoistway, wherein a car is arranged in the hoistway, one side of the car is provided with a counterweight, the car is provided with a plurality of first movable pulley blocks, the top of the counterweight is provided with a plurality of second movable pulley blocks, the top of the hoistway is provided with a plurality of first fixed pulley blocks corresponding to the first movable pulley blocks, the top of the hoistway is provided with a plurality of second fixed pulley blocks corresponding to the second movable pulley blocks, the bottom of the hoistway is provided with a traction machine, the traction machine is provided with a traction sheave, one side of the traction sheave, which faces the first movable pulley blocks, is provided with a third fixed pulley block, one side of the traction sheave, which faces the second movable pulley blocks, is provided with a fourth fixed pulley block, the traction sheave is provided with a traction rope, one end of the traction rope passes through the third fixed pulley block and then alternately bypasses the first fixed pulley block and the first movable pulley block, and the other end of the traction rope bypasses the second fixed pulley block and then alternately bypasses the second fixed pulley block, both ends of the hoisting rope are fixed with the top of the hoistway through the rope hitch plate.
In the large-load elevator without the machine room, the traction sheave includes a sheave body connected with a main shaft of the traction machine, a steel ring is arranged on the outer side of the sheave body, rope grooves matched with the traction ropes are formed in the outer peripheral surface of the steel ring, a plurality of first through grooves are formed between the sheave body and the steel ring, a plurality of rollers are arranged in the first through grooves, and baffles are arranged on two sides of each first channel.
In the large-load elevator without the machine room, the inner side end of the baffle is fixed to the wheel body through the screw, the outer side end of the baffle extends outwards to exceed the inner side wall of the steel ring, the outer side end of the baffle is provided with the step groove, and the bottom surface of the step groove corresponds to the end surface of the first through groove.
In the elevator with large load and no machine room, the diameter of the roller is equal to the height of the first through groove, the length of the roller is smaller than the width of the first through groove, a second through groove is formed between the adjacent first through grooves and consists of an inner groove located on the outer peripheral surface of the wheel body and an outer groove located on the inner peripheral surface of the steel ring, the second through groove is provided with a long-strip-shaped key block, the lower portion of the key block is tightly matched and connected with the inner groove, and the upper portion of the key block is loosely matched and connected with the outer groove.
Compared with the prior art, the car is provided with the three movable pulley blocks, so that the traction ratio of the elevator reaches 6: 1, on the basis of keeping the traction power of the traction machine unchanged, the load capacity of the elevator is improved, and the load capacity of the elevator can reach 7 tons. The traction machine is arranged at the bottom of the well, so that the height of the traction machine is reduced, the high-altitude operation of workers is avoided, and the installation and the subsequent maintenance of the traction machine are easy, namely the installation and the maintenance of an elevator are easy. Because the traction machine is arranged at the bottom of the well and is pressed downwards, the position of the traction machine is stable, the falling of the lift car cannot be caused, and safety accidents are not easy to cause. In addition, the invention ensures that the traction sheave is positioned on the traction surface of the traction rope easily when the traction machine is installed through improving the traction sheave, and the traction rope cannot generate eccentric wear on the rope groove of the traction sheave in the moving process, thereby reducing the installation difficulty of the traction machine, namely the installation difficulty of the elevator. Therefore, the invention has the advantages of large carrying capacity, easy installation, easy maintenance and difficult safety accident.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1.
Fig. 2 is a front view of the traction sheave of embodiment 2.
Fig. 3 is a left side view of the traction sheave of embodiment 2.
Detailed Description
The invention is further illustrated by the following figures and examples, which are not to be construed as limiting the invention.
Example 1. A large-load elevator without a machine room comprises a hoistway, wherein a car 1 is arranged in the hoistway, one side of the car 1 is provided with a counterweight 2, the top of the car 1 is provided with three first movable pulley blocks 3A, 3B and 3C, the top of the counterweight 2 is provided with three second movable pulley blocks 4A, 4B and 4C, the top of the hoistway is provided with three first fixed pulley blocks 5A, 5B and 5C corresponding to the first movable pulley blocks 3A, 3B and 3C, the top of the hoistway is provided with three second fixed pulley blocks 6A, 6B and 6C corresponding to the second movable pulley blocks 4A, 4B and 4C, the bottom of the hoistway is provided with a traction machine 7, the traction machine 7 is provided with a traction wheel 8, one side of the traction wheel 8 facing the first movable pulley blocks 3A, 3B and 3C is provided with a third fixed pulley block 9, one side of the traction wheel 8 facing the second movable pulley blocks 4A, 4B and 4C is provided with a fourth fixed pulley block 10, the traction sheave 8 is provided with a traction rope 11, one end of the traction rope 11 passes through the third fixed pulley block 9 and then alternately bypasses the first fixed pulley blocks 5A, 5B and 5C and the first movable pulley blocks 3A, 3B and 3C, the other end of the traction rope 11 bypasses the fourth fixed pulley block 10 and then alternately bypasses the second fixed pulley blocks 6A, 6B and 6C and the second movable pulley blocks 4A, 4B and 4C, and both ends of the traction rope 11 are fixed with the top of the hoistway through a rope hitch plate 12.
All the fixed pulley blocks are fixed with the well, and all the movable pulley blocks and the fixed pulley blocks are guide wheel assemblies of the existing elevator and comprise guide wheels and supports on the guide wheels.
Example 2. Unlike embodiment 1 in which the traction sheave 8 of embodiment 1 is an existing traction sheave, embodiment 2 is a further improvement of the traction sheave 8. The improved traction sheave 8 comprises a sheave body 13 connected with a main shaft of the traction machine 7, a steel ring 14 is arranged on the outer side of the sheave body 13, rope grooves 15 matched with the traction ropes 11 are formed in the outer circumferential surface of the steel ring 14 (the rope grooves 15 are formed in all the movable pulley blocks), a plurality of first through grooves are formed between the sheave body 13 and the steel ring 14, a plurality of rollers 16 are arranged in the first through grooves, baffles 17 are arranged on two sides of each first channel, and the width of each baffle 17 is smaller than that of each first through groove.
The inner side end of the baffle 17 is fixed with the wheel body 13 through a screw 18, the outer side end of the baffle 17 extends outwards to exceed the inner side wall of the steel ring 14, a step groove 19 is formed in the outer side end of the baffle 17, and the bottom surface of the step groove 19 corresponds to the end surface of the first through groove.
The diameter of the roller 16 is equal to the height of the first through groove, the length of the roller 16 is smaller than the width of the first through groove, a second through groove is arranged between every two adjacent first through grooves, the cross section of each first through groove and the cross section of each second through groove are both square, each second through groove consists of an inner groove 20 located on the outer peripheral surface of the wheel body 13 and an outer groove 21 located on the inner peripheral surface of the steel ring 14, each second through groove is provided with a long-strip-shaped key block 22, the lower portion of each key block 22 is connected with the inner groove 20 in a tight fit mode, and the upper portion of each key block 22 is connected with the outer groove in a loose fit mode.
The steel ring 14 can axially move under the action of the roller 16, so that the dragging rope 11 is ensured to be positioned at the middle position of the rope groove 15, and even if the installation position of the traction machine has certain forward and backward movement deviation, the steel ring 14 can automatically swing right under the action of the dragging rope 11, so that the rope groove 15 corresponds to the dragging rope, eccentric wear of the dragging rope is avoided, and the installation difficulty of the traction machine is reduced. The rollers 16 have the advantage of high compressive resistance, and the plurality of rollers 16 effectively support the steel ring 14 to prevent the steel ring 14 from deforming, so that the traction sheave 8 has high radial strength. The key blocks 22 have high shearing resistance, and the plurality of key blocks 22 enable high torque transmission capacity between the steel ring 14 and the wheel body 13, and high torsional strength of the traction sheave 8 is reserved. The key block 22 also makes the roller 16 bear only radial pressure without torsion, thereby not easy to bend, making the steel ring 14 move smoothly, further ensuring the rope groove 15 corresponding to the hauling rope, avoiding eccentric wear of the hauling rope.
The working principle is as follows: the traction machine 7 drives the traction sheave 8 to rotate, the traction sheave 8 drives the traction rope 11 to move, and the lift car 1 and the counterweight 2 move in reverse directions under the action of the movable fixed pulley.
Claims (4)
1. Big load does not have computer lab elevator, its characterized in that: the elevator comprises a hoistway, wherein a car (1) is arranged in the hoistway, one side of the car (1) is provided with a counterweight (2), the car (1) is provided with a plurality of first movable pulley blocks (3A, 3B and 3C), the top of the counterweight (2) is provided with a plurality of second movable pulley blocks (4A, 4B and 4C), the top of the hoistway is provided with a plurality of first fixed pulley blocks (5A, 5B and 5C) corresponding to the first movable pulley blocks (3A, 3B and 3C), the top of the hoistway is provided with a plurality of second fixed pulley blocks (6A, 6B and 6C) corresponding to the second movable pulley blocks (4A, 4B and 4C), the bottom of the hoistway is provided with a traction machine (7), the traction wheel (8) is arranged on the traction machine (7), one side of the traction wheel (8) facing the first movable pulley blocks (3A, 3B and 3C) is provided with a third fixed pulley block (9), the traction wheel (8) faces the second movable pulley blocks (4A), 4B, 4C), a fourth fixed pulley block (10) is arranged on one side of the hoisting rope (8), a hoisting rope (11) is arranged on the hoisting rope (8), one end of the hoisting rope (11) passes through the third fixed pulley block (9) and then alternately bypasses the first fixed pulley block (5A, 5B, 5C) and the first movable pulley block (3A, 3B, 3C), the other end of the hoisting rope (11) bypasses the fourth fixed pulley block (10) and then alternately bypasses the second fixed pulley block (6A, 6B, 6C) and the second movable pulley block (4A, 4B, 4C), and the two ends of the hoisting rope (11) are fixed with the top of the hoistway through rope head plates (12).
2. The heavy-load machine-roomless elevator according to claim 1, characterized in that: the traction wheel (8) comprises a wheel body (13) connected with a main shaft of the traction machine (7), a steel ring (14) is arranged on the outer side of the wheel body (13), a rope groove (15) matched with the traction rope (11) is formed in the outer peripheral surface of the steel ring (14), a plurality of first through grooves are formed between the wheel body (13) and the steel ring (14), a plurality of rollers (16) are arranged in the first through grooves, and baffles (17) are arranged on two sides of each first channel.
3. The large-load machine room-less elevator according to claim 2, characterized in that: the inner side end of the baffle (17) is fixed with the wheel body (13) through a screw (18), the outer side end of the baffle (17) extends outwards to exceed the inner side wall of the steel ring (14), a step groove (19) is formed in the outer side end of the baffle (17), and the bottom surface of the step groove corresponds to the end face of the first through groove.
4. The large-load machine room-less elevator according to claim 2, characterized in that: the diameter of the roller (16) is equal to the height of the first through groove, the length of the roller (16) is smaller than the width of the first through groove, a second through groove is formed between the adjacent first through grooves, the second through groove consists of an inner groove (20) located on the outer peripheral surface of the wheel body (13) and an outer groove (21) located on the inner peripheral surface of the steel ring (14), the second through groove is provided with a long-strip-shaped key block (22), the lower portion of the key block (22) is tightly connected with the inner groove (20), and the upper portion of the key block (22) is loosely connected with the outer groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110478284.5A CN113291952B (en) | 2021-04-30 | 2021-04-30 | Large-load elevator without machine room |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110478284.5A CN113291952B (en) | 2021-04-30 | 2021-04-30 | Large-load elevator without machine room |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113291952A true CN113291952A (en) | 2021-08-24 |
| CN113291952B CN113291952B (en) | 2022-12-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110478284.5A Active CN113291952B (en) | 2021-04-30 | 2021-04-30 | Large-load elevator without machine room |
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| Country | Link |
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| CN (1) | CN113291952B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201089686Y (en) * | 2007-09-27 | 2008-07-23 | 日立电梯（中国）有限公司 | Observation elevator device |
| CN206232290U (en) * | 2016-10-27 | 2017-06-09 | 欧姆尼机电科技（昆山）有限公司 | A kind of mainframe lower formula elevator |
| CN206336887U (en) * | 2016-12-08 | 2017-07-18 | 广东通立电梯有限公司 | Elevator |
| CN209038833U (en) * | 2018-10-26 | 2019-06-28 | 森赫电梯股份有限公司 | A kind of tractive driving suspension of large-tonnage Cargo Lift |
| CN210127005U (en) * | 2018-12-26 | 2020-03-06 | 苏州市金紫五金制品有限公司 | Wear-resistant tension shaft for elevator |
-
2021
- 2021-04-30 CN CN202110478284.5A patent/CN113291952B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201089686Y (en) * | 2007-09-27 | 2008-07-23 | 日立电梯（中国）有限公司 | Observation elevator device |
| CN206232290U (en) * | 2016-10-27 | 2017-06-09 | 欧姆尼机电科技（昆山）有限公司 | A kind of mainframe lower formula elevator |
| CN206336887U (en) * | 2016-12-08 | 2017-07-18 | 广东通立电梯有限公司 | Elevator |
| CN209038833U (en) * | 2018-10-26 | 2019-06-28 | 森赫电梯股份有限公司 | A kind of tractive driving suspension of large-tonnage Cargo Lift |
| CN210127005U (en) * | 2018-12-26 | 2020-03-06 | 苏州市金紫五金制品有限公司 | Wear-resistant tension shaft for elevator |
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| Publication number | Publication date |
|---|---|
| CN113291952B (en) | 2022-12-06 |
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