CN108946398A - steel belt elevator - Google Patents
steel belt elevator Download PDFInfo
- Publication number
- CN108946398A CN108946398A CN201810894552.XA CN201810894552A CN108946398A CN 108946398 A CN108946398 A CN 108946398A CN 201810894552 A CN201810894552 A CN 201810894552A CN 108946398 A CN108946398 A CN 108946398A
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- CN
- China
- Prior art keywords
- plate
- car
- rope end
- counterweight
- lift car
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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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Classifications
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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
- B66B11/02—Cages, i.e. cars
- B66B11/0226—Constructional features, e.g. walls assembly, decorative panels, comfort equipment, thermal or sound insulation
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- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
Abstract
The invention belongs to technical field of elevator equipment, especially Steel belt elevator, load carrier, the rope end device, counterweight used including lift car and cooperation lift car, the elevator car roof is equipped with the safety barrier of car door side opening, the load carrier of carrying lift car weight and the rope end device of fixed elevator steel belt is respectively set in the installation hoistway two sides of the lift car, the lift car is equipped with the safety tongs that cooperation limiter of speed and guide rail use, and the counterweight of balance car weight is equipped with below the load carrier.Load carrier, rope end device, counterweight in the present invention are not necessarily to generate the structural nexus in addition to transmission with external other components during the work time, the stability used is improved while reducing connection structure, its is easy for installation, to elevator building hoistway require it is low, can be widely applied in Steel belt elevator product, generate considerable economic value.
Description
Technical field
The invention belongs to technical field of elevator equipment, especially Steel belt elevator.
Background technique
In recent years, with the development of elevator technology, the wirerope of elevator traction transmission has also evolved into Steel Belt Transmission, longevity
Life is 2-3 times of traditional wirerope；Weight is lighter, about lighter than traditional wirerope by 20%；More sturdy and durable, safety is stronger,
Its safety coefficient for giving passenger is at least 12；Vibration and noise can effectively be reduced.But the current product makes on the market
With less, therefore still compare shortcoming in the relevant design of the component of elevator, the experience of installation, to elevator building hoistway have compared with
High requirement, since there are great differences with previous vertical lift in structure for Steel belt elevator, in order to save space reduction damage
Consumption when installing each component in hoistway, considers to factors such as space, costs, it will usually which elevator components are mounted in hoistway
On the reserved installation fashioned iron in portion, waits elevator rope ends panel assembly also to need to be filled wall after the installation is completed, not only increase use
The installation cost at family also improves the maintenance cost of user simultaneously, and the connection installation of each component is complicated, to guide rail normal mounting week
Phase impacts, and used rope end device is there is installation position inaccurate, installation difficulty height and guiding stability occurs not
The problems such as ideal, easy to wear, easy dislocation, causes steel band skidding is even de- split, influence elevator whole service life.
Summary of the invention
It is an object of the present invention in view of the drawbacks of the prior art and insufficient, provide it is a kind of it is structurally reasonable, can subtract
The occupancy in few space, the Steel belt elevator that elevator overall stability is improved while reducing installation requirement.
Technical scheme is as follows:
The Steel belt elevator, including lift car and the load carrier for cooperating lift car to use, rope end device, to refitting
It sets, the elevator car roof is equipped with the safety barrier of car door side opening, the installation hoistway two sides of the lift car
The load carrier of carrying lift car weight and the rope end device of fixed elevator steel belt, the lift car is respectively set
It is equipped with the safety tongs that cooperation limiter of speed and guide rail use, the load carrier lower section is equipped with balance car weight to refitting
It sets, the load carrier is by the first side plate and the second side plate using bolt arrangement clamping connection board group at the connecting plate
Lateral surface be equipped with head plate and stiffening plate, be equipped on the interior sandwich serface of first side plate and the second side plate symmetrically
Counter weight guide track is equipped with dismountable guiding device on the interior sandwich serface of the connecting plate, the guiding device side
The back side of connecting plate is equipped with the first car guide rail, first car guide rail and is installed on carriage ipsilateral guide shoe and safety
Pincers are used cooperatively.
Preferably, dismountable lower installation board is installed at the top of first side plate, the second side plate and connecting plate, it is described
Connecting plate at the top of be located at lower installation board on dismountable steel band motor and limiter of speed seat are installed.
Preferably, it is located between first side plate and the second side plate on lower installation board and dismountable counterweight rope is installed
Head plate, the counterweight rope hitch plate middle part are equipped with steel band rope end, and the counterweight rope hitch plate is the channel steel of opening upwards, described
Channel steel in the middle part of be located at the position of installation steel band rope end and be equipped with the backing plate that uses of cooperation rope end.
Preferably, the guiding device is equipped with guide holder, is equipped with reversing wheel in the middle part of the guide holder, described
The two sides of reversing wheel are horizontally connected with baffle.
Preferably, the rope end device includes the second car guide rail, rail brackets ins and outs, lift car rope head component, steel band
Rope end, steel band, rope end stiffening plate, the rail brackets ins and outs and rope end stiffening plate are fixed on coplanar wall, described
One end of the second car guide rail be removably mounted in rail brackets ins and outs, second car guide rail and lift car rope head
The detachably connected fixation in the side of component, second car guide rail are used cooperatively with ipsilateral safety tongs, the rope end
The detachably connected fixation in the other side of stiffening plate and lift car rope head component, the lift car rope head component are fixed on rail brackets
Between ins and outs and rope end stiffening plate, steel band rope end is housed at the top of the described lift car rope head component, the steel band rope end lower end with
Steel band connection.
Preferably, the counterweight includes counterweight frame and steel band wheel assembly, and the counterweight frame is equipped with two
Root post and the upper beam and underbeam for fixing two columns, equipped with to pouring weight between the two root posts, above and below the column
It is respectively provided with guide shoe on the outside of the cylinder that both ends are located at, the oily legendary venomous insect that cooperation guide shoe uses, institute are equipped at the top of the two root posts
On the same line, the underbeam of the counterweight base of frame is equipped with cooperation pair for the sliding slot on oily legendary venomous insect stated and the sliding slot of guide shoe
The adjusting seat that pouring weight uses, the steel band wheel assembly is detachably arranged on the upper beam between at the top of two root posts, described
Steel band wheel assembly include that flap plate is arranged in the clamping plate of opposite side setting and opposite side, the clamping plate synthesizes rectangle frame with flap board group
Structure, the rectangle frame is interior to be equipped with a pair of of roller.
Preferably, the anti-off board that cooperation guide shoe uses is respectively equipped on the column between the guide shoe at both ends, it is described
The sliding slot in opening and guide shoe in anti-off board is on the same line.
Preferably, covering is equipped with to the dust excluding plate of roller at the top of the two sides clamping plate, the dust excluding plate is dismountable
It is fixed on the clamping plate of two sides.
Preferably, the guide shoe in the two root posts of the counterweight and oily legendary venomous insect are fitted to two on load carrier
Root counter weight guide track uses, and the counterweight slides up and down between two counter weight guide tracks.
Preferably, two counter weight guide tracks on the load carrier and the first car guide rail are equipped with rail brackets face
Yard, the rail brackets ins and outs on the rope end device includes metope affixed side and the second car guide rail connecting side.
The invention has the benefit that Steel belt elevator is between each component using detachable structure by by will be connected,
The installation steps of a sequence are formed, and each component keeps enough spacing to wall, consequently facilitating the maintenance of equipment is grasped in maintenance
Make, and counter weight guide track and the first car guide rail are fixed on load-bearing body frame and are closely connected to become an entirety, is formed brief
Reliable load carrier, and each component can be realized each device in process of factory production using lift car as stationary body
Being pre-positioned for each component connection is carried out, to greatly shorten the field erected time, is also convenient for the dismounting maintenance in later period, in addition
Load carrier, rope end device, counterweight are not necessarily to generate the structure in addition to transmission with external other components during the work time
Connection, improves the stability used while reducing connection structure, easy for installation, low to elevator building hoistway requirement,
It can be widely applied in Steel belt elevator product, generate considerable economic value.
Detailed description of the invention
Fig. 1 is the Steel belt elevator structural schematic diagram of the embodiment of the present invention；
Fig. 2 is the load carrier structural schematic diagram of the embodiment of the present invention；
Fig. 3 is the connecting board structure schematic diagram on the load carrier of the embodiment of the present invention；
Fig. 4 is the guiding device structural schematic diagram on the load carrier of the embodiment of the present invention；
Fig. 5 is the rope end apparatus structure schematic diagram of the embodiment of the present invention；
Fig. 6 is the counterweight structural schematic diagram of the embodiment of the present invention.
Description of symbols: lift car 1, safety barrier 11, safety tongs 12, rail brackets face code 13, rail brackets bottom
Code 14, load carrier 2, the first side plate 21, the second side plate 22, connecting plate 23, head plate 231, stiffening plate 232, counter weight guide track 24,
It is guiding device 25, guide holder 251, reversing wheel 252, baffle 253, lower installation board 261, steel band motor 262, limiter of speed seat 263, right
Weight rope hitch plate 264, rope end device 3, lift car rope head component 31, rope end stiffening plate 32, counterweight 4, counterweight frame 41, column
411, upper beam 412, underbeam 413, steel band wheel assembly 42, to pouring weight 421, clamping plate 422, flap plate 423, to roller 424, dust excluding plate
425, guide shoe 43, oily legendary venomous insect 44, adjusting seat 45, anti-off board 46, the first car guide rail 51, the second car guide rail 52, steel band rope end 6,
Steel band 61.
Specific embodiment
As Figure 1-Figure 4, Steel belt elevator described in the present embodiment, including lift car 1 and cooperation lift car 1 use
Load carrier 2, rope end device 3, counterweight 4, the safety barrier of car door side opening is equipped at the top of the lift car 1
11, the load-bearing of carrying lift car weight is respectively set in the upper left and right sides positioned at safety barrier 11 of the lift car 1
The rope end device 3 of device 2 and fixed elevator steel belt, the lift car 1 are equipped with the peace that cooperation car guide rail uses
It is complete to clamp 12, the counterweight 4 of balance car weight is equipped with below the load carrier 2, the load carrier 2 is by the first side
Plate 21 and the second side plate 22 are formed using bolt arrangement clamping connection plate 23, and the lateral surface of the connecting plate 23 is equipped with end socket
Symmetrical counter weight guide track is installed on the interior sandwich serface of plate 231 and stiffening plate 232, first side plate 21 and 22 plate of second side
24, dismountable guiding device 25 is installed, the guiding device is equipped with and leads on the interior sandwich serface of the connecting plate 23
To seat 251, reversing wheel 252 is installed in the middle part of the guide holder 251, the two sides of the reversing wheel 252 are horizontally connected with gear
Plate 253, the back side of the connecting plate 23 of 25 side of guiding device are equipped with the first car guide rail 51, first carriage
The guide shoe 43 ipsilateral with carriage is installed on of guide rail 51 and safety tongs 12 are used cooperatively.
Originally it is stating in embodiment, is being equipped at the top of first side plate 21, the second side plate 22 and connecting plate 23 detachable
Lower installation board 261, be located at the top of the connecting plate 23 on lower installation board 261 be equipped with dismountable steel band motor 262 with
Limiter of speed seat 263, it is dismountable right to be equipped on lower installation board 261 between first side plate 21 and the second side plate 22
Weight rope hitch plate 264, steel band rope end 6 is equipped in the middle part of the counterweight rope hitch plate 264, and the counterweight rope hitch plate 264 is opening
Upward channel steel, the position that the channel steel middle part is located at installation steel band rope end are equipped with the backing plate that cooperation rope end uses.
As shown in connection with fig. 5, it is originally stating in embodiment, the rope end device 3 includes the second car guide rail 52, rail brackets
Ins and outs 14, lift car rope head component 31, steel band rope end 6, steel band 61, rope end stiffening plate 32, the rail brackets ins and outs 14 and rope
Head stiffening plate 32 is fixed on coplanar wall, and one end of second car guide rail 52 is removably mounted on guide rail branch
In frame ins and outs 14, the detachably connected fixation in side of second car guide rail 52 and lift car rope head component 31 is described
Second car guide rail 52 is used cooperatively with ipsilateral safety tongs 12, and the rope end stiffening plate 32 is another with lift car rope head component 31
The detachably connected fixation in side, the lift car rope head component 31 be fixed on rail brackets ins and outs 14 and rope end stiffening plate 32 it
Between, steel band rope end 6 is housed, 6 lower end of steel band rope end is connect with steel band 61, maximum at the top of the lift car rope head component 31
The support that the second car guide rail 52 is utilized of degree and the supporting role of hoistway, the material cost substantially reduced and installation are difficult
Degree.
As shown in connection with fig. 6, it is originally stating in embodiment, the counterweight 4 includes counterweight frame 41 and steel band wheel assembly
42, the counterweight frame 41 is equipped with two root posts 411 and fixes the upper beam 412 and underbeam 413 of two columns 411, described
Two root posts 411 between equipped with to pouring weight 421, on the outside of the cylinder that 411 upper and lower ends of column are located on be respectively provided with
Guide shoe 43 is equipped with the oily legendary venomous insect 44 that cooperation guide shoe 43 uses at the top of the two root posts 411, the sliding slot on the oily legendary venomous insect 44 with
On the same line, the underbeam 413 of 41 bottom of counterweight frame is equipped with cooperation and uses pouring weight 421 sliding slot of guide shoe 43
Adjusting seat 45, the steel band wheel assembly 42 is detachably arranged on the upper beam 412 between the top of two root posts 411, institute
The steel band wheel assembly 42 stated includes that flap plate 423, the clamping plate 422 and flap is arranged in the clamping plate 422 of opposite side setting and opposite side
Plate 423 is combined into rectangular frame structure, and a pair of of roller 424 is equipped in the rectangle frame, is improved in 4 use process of counterweight
Stability, and facilitate the replacement of installation, maintenance and components, so as to improve tieing up in use for some time to roller 424
Difficult situation is protected, the various problems in operational process are efficiently reduced using simple and practical connection structure, is produced improving
Reduce the frequency of plant maintenance while product service life.
In the present embodiment, the anticreep that cooperation guide shoe 43 uses is respectively equipped on the column between the guide shoe 43 at both ends
Plate 46, on the same line, the anti-off board 46 can drop the sliding slot in opening and guide shoe 43 in the anti-off board 46
The generation for the case where steel cable in low guide shoe 43 skids off, to improve the stabilization of elevator operating.
In the present embodiment, the dust excluding plate 425 covered to roller 424 is equipped at the top of the two sides clamping plate 422, it is described
Dust excluding plate 425 is detachably mounted on two sides clamping plate 422, and sundries soil is effectively prevent to drop to roller 424 and steel band 61
Working face on.
In the present embodiment, the guide shoe 43 in the two root posts 411 of the counterweight 4 is fitted to oily legendary venomous insect 44
Two counter weight guide tracks 24 on load carrier 2 use, and the counterweight 4 carries out upper downslide between two counter weight guide tracks 24
It is dynamic.
Originally it is stating in embodiment, is being set on two counter weight guide tracks 24 on the load carrier 2 and the first car guide rail 51
There is rail brackets face code 13, the rail brackets ins and outs 14 on the rope end device 3 includes that metope affixed side is led with the second carriage
52 connecting side of rail.
Through the above technical solutions, Steel belt elevator is between each component using detachable structure by by will be connected, shape
At the installation steps of a sequence, and each component keeps enough spacing to wall, consequently facilitating attended operation of the maintenance to equipment,
And counter weight guide track 24 and the first car guide rail 51 are fixed on load-bearing body frame and are closely connected to become an entirety, it is formed brief
Reliable load carrier 2, and each component is stationary body with lift car 1, can be realized each device in process of factory production
It is middle to carry out being pre-positioned for each component connection, to greatly shorten the field erected time, it is also convenient for the dismounting maintenance in later period, separately
Outer load carrier 2, rope end device 3, counterweight 4 with external other components during the work time without generating in addition to transmission
Structural nexus, improves the stability used while reducing connection structure, easy for installation, to elevator building hoistway requirement
It is low, can be widely applied in Steel belt elevator product, generate considerable economic value.
Although the embodiments of the present invention have been disclosed as above, but its is not only in the description and the implementation listed
With.It can be applied to various suitable the field of the invention completely.It for those skilled in the art, can be easily
Realize other modification.Therefore without departing from the general concept defined in the claims and the equivalent scope, the present invention is simultaneously unlimited
In specific details and legend shown and described herein.
Claims (10)
1. Steel belt elevator, it is characterised in that: including lift car and cooperation lift car use load carrier, rope end device,
Load carrier and the fixation of carrying lift car weight is respectively set in counterweight, the installation hoistway two sides of the lift car
The rope end device of elevator steel belt, the lift car is equipped with the safety tongs that cooperation limiter of speed and guide rail use, described
Load carrier below be equipped with the counterweight of balance car weight, the load carrier makes by the first side plate and the second side plate
Head plate and stiffening plate are equipped at the lateral surface of, the connecting plate with bolt arrangement clamping connection board group, described first
Symmetrical counter weight guide track is installed on the interior sandwich serface of side plate and the second side plate, is equipped on the interior sandwich serface of the connecting plate
Dismountable guiding device, the back side of the connecting plate of the guiding device side are equipped with the first car guide rail, and described
The one car guide rail guide shoe ipsilateral with carriage is installed on and safety tongs are used cooperatively.
2. Steel belt elevator as described in claim 1, it is characterised in that: the first side plate, the second side plate and the connecting plate top
Portion is equipped with dismountable lower installation board, is located on lower installation board at the top of the connecting plate and is equipped with dismountable steel band motor
With limiter of speed seat.
3. Steel belt elevator as claimed in claim 2, it is characterised in that: under being located between first side plate and the second side plate
Dismountable counterweight rope hitch plate is installed on mounting plate, steel band rope end, pair are installed in the middle part of the counterweight rope hitch plate
Weight rope hitch plate is the channel steel of opening upwards, and the position that installation steel band rope end is located in the middle part of the channel steel is equipped with cooperation rope end and uses
Backing plate.
4. Steel belt elevator as described in claim 1, it is characterised in that: the guiding device is equipped with guide holder, described
Reversing wheel is installed in the middle part of guide holder, the two sides of the reversing wheel are horizontally connected with baffle.
5. Steel belt elevator as described in claim 1, it is characterised in that: the rope end device includes the second car guide rail, leads
Rail bracket ins and outs, lift car rope head component, steel band rope end, steel band, rope end stiffening plate, the rail brackets ins and outs and rope end are reinforced
Plate is fixed on coplanar wall, and one end of second car guide rail is removably mounted in rail brackets ins and outs,
The detachably connected fixation in side of second car guide rail Yu the lift car rope head component, second car guide rail and same
Side safety tongs is used cooperatively, the detachably connected fixation in the other side of the rope end stiffening plate and lift car rope head component, described
Lift car rope head component be fixed between rail brackets ins and outs and rope end stiffening plate, steel is housed at the top of the described lift car rope head component
Band rope end, the steel band rope end lower end is connect with steel band.
6. Steel belt elevator as described in claim 1, it is characterised in that: the counterweight includes counterweight frame and wheeled steel
Component, the counterweight frame are equipped with two root posts and fix the upper beam and underbeam of two columns, the two root posts it
Between equipped with to pouring weight, on the outside of the cylinder that the column upper and lower ends are located on be respectively provided with guide shoe, the two root posts top
Portion is equipped with the oily legendary venomous insect that uses of cooperation guide shoe, the sliding slot of sliding slot and guide shoe on the oily legendary venomous insect on the same line, pair
The underbeam of weight base of frame is equipped with the adjusting seat that cooperation uses pouring weight, and the steel band wheel assembly is detachably arranged in two
On upper beam between at the top of root post, the steel band wheel assembly includes that flap plate, institute is arranged in the clamping plate of opposite side setting and opposite side
The clamping plate stated synthesizes rectangular frame structure with flap board group, and a pair of of roller is equipped in the rectangle frame.
7. Steel belt elevator as described in claim 1, it is characterised in that: be respectively equipped between the guide shoe at both ends on the column
The anti-off board that uses of cooperation guide shoe, the sliding slot in opening and guide shoe in the anti-off board is on the same line.
8. Steel belt elevator as described in claim 1, it is characterised in that: be equipped with covering at the top of the two sides clamping plate to roller
Dust excluding plate, the dust excluding plate are detachably mounted on the clamping plate of two sides.
9. Steel belt elevator as described in claim 1, it is characterised in that: guide shoe in the two root posts of the counterweight with
Oily legendary venomous insect be fitted to two counter weight guide tracks on load carrier use, the counterweight between two counter weight guide tracks into
Row slides up and down.
10. Steel belt elevator as described in claim 1, it is characterised in that: two counter weight guide tracks on the load carrier with
First car guide rail is equipped with rail brackets face code, the rail brackets ins and outs on the rope end device include metope affixed side with
Second car guide rail connecting side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810894552.XA CN108946398A (en) | 2018-08-08 | 2018-08-08 | steel belt elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810894552.XA CN108946398A (en) | 2018-08-08 | 2018-08-08 | steel belt elevator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108946398A true CN108946398A (en) | 2018-12-07 |
Family
ID=64468743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810894552.XA Pending CN108946398A (en) | 2018-08-08 | 2018-08-08 | steel belt elevator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108946398A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110526083A (en) * | 2019-08-29 | 2019-12-03 | 森赫电梯股份有限公司 | It is a kind of by traction steel band drive without sedan-chair frame type elevator |
| CN112478985A (en) * | 2020-11-26 | 2021-03-12 | 广州广日电梯工业有限公司 | Household elevator without machine room steel belt |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103303765A (en) * | 2012-03-15 | 2013-09-18 | 蒂森克虏伯电梯设备有限公司 | Friction pulley elevator without machine room |
| CN204980746U (en) * | 2015-09-29 | 2016-01-20 | 山东宏运达电梯股份有限公司 | No computer lab steel band elevator host computer seat mounting structure |
| CN105366485A (en) * | 2015-11-02 | 2016-03-02 | 康力电梯股份有限公司 | Steel belt main machine frame |
| CN206692173U (en) * | 2017-01-26 | 2017-12-01 | 广州广日电梯工业有限公司 | A kind of guider of composite steel band |
| CN207434804U (en) * | 2017-10-30 | 2018-06-01 | 重庆迈高电梯有限公司 | A kind of steel band villa elevator rack |
-
2018
- 2018-08-08 CN CN201810894552.XA patent/CN108946398A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103303765A (en) * | 2012-03-15 | 2013-09-18 | 蒂森克虏伯电梯设备有限公司 | Friction pulley elevator without machine room |
| CN204980746U (en) * | 2015-09-29 | 2016-01-20 | 山东宏运达电梯股份有限公司 | No computer lab steel band elevator host computer seat mounting structure |
| CN105366485A (en) * | 2015-11-02 | 2016-03-02 | 康力电梯股份有限公司 | Steel belt main machine frame |
| CN206692173U (en) * | 2017-01-26 | 2017-12-01 | 广州广日电梯工业有限公司 | A kind of guider of composite steel band |
| CN207434804U (en) * | 2017-10-30 | 2018-06-01 | 重庆迈高电梯有限公司 | A kind of steel band villa elevator rack |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110526083A (en) * | 2019-08-29 | 2019-12-03 | 森赫电梯股份有限公司 | It is a kind of by traction steel band drive without sedan-chair frame type elevator |
| CN112478985A (en) * | 2020-11-26 | 2021-03-12 | 广州广日电梯工业有限公司 | Household elevator without machine room steel belt |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181207 |
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| RJ01 | Rejection of invention patent application after publication |