CN105858420B - A kind of elevator drag device - Google Patents
A kind of elevator drag device Download PDFInfo
- Publication number
- CN105858420B CN105858420B CN201610442614.4A CN201610442614A CN105858420B CN 105858420 B CN105858420 B CN 105858420B CN 201610442614 A CN201610442614 A CN 201610442614A CN 105858420 B CN105858420 B CN 105858420B
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- CN
- China
- Prior art keywords
- cable
- traction steel
- directive wheel
- spiral rod
- fixture block
- Prior art date
- 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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- 210000003739 neck Anatomy 0.000 claims abstract description 31
- 230000007246 mechanism Effects 0.000 claims abstract description 20
- 238000004804 winding Methods 0.000 claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 239000000696 magnetic material Substances 0.000 claims description 4
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 10
- 230000008859 change Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 239000008188 pellet Substances 0.000 description 3
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
Classifications
-
- 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
- B66B11/04—Driving gear ; Details thereof, e.g. seals
- B66B11/08—Driving gear ; Details thereof, e.g. seals with hoisting rope or cable operated by frictional engagement with a winding drum or sheave
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B17/00—Hoistway equipment
- B66B17/12—Counterpoises
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B7/00—Other common features of elevators
Landscapes
- 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 discloses a kind of elevator drag device, traction machine that it includes being installed in elevator hoistways, traction steel-cable and below traction machine to pouring weight, it is characterised in that：It is described to being provided with the automatic winding mechanism for being used to furling traction steel-cable and being in traction steel-cable tight state in pouring weight, the outer circle wall of the directive wheel is provided with annular groove, the bottom land position of annular groove is provided with least three necks formed along the radial direction inscribe of directive wheel, whole necks are uniformly distributed along the circumference of directive wheel, be provided with fixture block in the neck, the traction steel-cable with the rotation of directive wheel and the upper surface of fixture block against or disengagement.The present invention provides a kind of elevator drag device, during its overhauling elevator, car and can ensure that traction steel-cable does not release from directive wheel when not applying active force to traction steel-cable to pouring weight, avoid the risk that traction steel-cable releases from directive wheel.
Description
Technical field
The present invention relates to the technical field of elevator, a kind of specifically elevator drag device.
Background technology
The lifting process of elevator be sequentially wound by traction steel-cable the driving wheel of traction machine, the directive wheel of car and
To pouring weight to roller, so as to drive the lifting of car by the frictional force between driving wheel and traction steel-cable.And elevator is made
For special equipment, it examines the life safety that passenger is directly related to using the security of process, therefore for elevator reparing and dimension
The requirement of shield is higher, i.e., its frequency safeguarded is high, parts service life is short, and the replacement frequency of consumable accessory is high.And elevator is being tieed up
Need to lock car and to pouring weight during shield, consequently facilitating traction steel-cable releases, realize the directive wheel to all parts
Overhauled or changed, and in the overhauling elevator of prior art, after the completion of the maintenance of its directive wheel or replacing, the traction steel wire
When rope resets, traction steel-cable and the risk of directive wheel dislocation be present, i.e. traction steel-cable slips out of directive wheel, thus makes to drag
Draw that the rotating shaft of steel wire rope and directive wheel is stuck, or cause the rotating shaft of directive wheel constantly to cause the two with traction steel-cable friction
The premature breakdown of parts.
The content of the invention
The technical problems to be solved by the invention are：A kind of elevator drag device is provided, during its overhauling elevator, car
It can ensure that traction steel-cable does not release from directive wheel with when not applying active force to traction steel-cable to pouring weight, avoid and drag
Draw the risk that steel wire rope releases from directive wheel.
The technical solution used in the present invention is：A kind of elevator drag device is provided, it includes being installed in elevator hoistways
Traction machine, traction steel-cable and below traction machine to pouring weight, it is characterised in that：One end of traction steel-cable and elevator
The inwall of hoistway is fixed, and the other end of traction steel-cable is along the sequentially directive wheel around cage bottom and the traction of its length direction
Driving wheel on machine, and with being fixed to pouring weight, it is described to be used to furl traction steel-cable to traction steel-cable to being provided with pouring weight
Automatic winding mechanism in tight state.The outer circle wall of the directive wheel is provided with is surrounded on directive wheel for traction steel-cable
On annular groove, the bottom land position of annular groove is provided with least three necks formed along the radial direction inscribe of directive wheel, all
Neck is uniformly distributed along the circumference of directive wheel, and fixture block, fixture block and the removable connection of neck are provided with the neck, when fixture block is installed
The fixture block is placed on outside neck away from the upper surface of directive wheel axis and in annular groove when in neck, the traction
Steel wire rope with the rotation of directive wheel and the upper surface of fixture block against or disengage.The elevator of prior art is past in maintenance process
It is past to need to lock one step ahead to pouring weight and car, and, it is necessary to which one section will be sling manually to pouring weight in directive wheel Renewal process
Highly, consequently facilitating traction steel-cable 2 releases, the purpose for changing directive wheel is reached, it is impossible to find out, need during this manually
Sling to pouring weight, operation inconvenience, and potential safety hazard be present, and by the fixture block structure design on directive wheel in the present invention, its
When needing to change directive wheel, it is only necessary to extract fixture block, and rotary caster can make traction steel-cable relax, and complete directive wheel
Change, can be locked to pouring weight one step ahead without manual pull-up to pouring weight, therefore during overhauling elevator, and avoid counterweight
The risk that block falls, increase the security of maintainer.Its operating process is in simple terms：It is locked to pouring weight and car, extract
The fixture block of directive wheel, the replacing of directive wheel is completed, automatic winding mechanism makes the traction steel-cable after extraction fixture block in the process
Pretension causes the disengaging of traction steel-cable and other trains so as to prevent traction steel-cable relaxation, avoids sending out on directive wheel
Raw traction steel-cable and the failure of train dislocation.
It is described that the upper opening for supplying traction steel-cable to penetrate cavity is provided with to the top of pouring weight to being provided with cavity in pouring weight,
The bottom of cavity is provided with connecting seat, and one end and the connecting seat of traction steel-cable are fixed, and the automatic winding mechanism is installed on cavity
Position interior and between upper opening and connecting seat.
Described automatic winding mechanism includes a spiral rod, and the both ends of spiral rod and the inwall of cavity are rotatably assorted, spiral
The centre position of rod vertically is provided with the radial direction through hole for traction steel-cable break-through, between the end of spiral rod and the inwall of cavity
Provided with the torsion spring for driving spiral rod to rotate, traction steel-cable is furled in the outer circle wall of spiral rod when being rotated with spiral rod
On, when car and the torsion spring drives spiral rod to turn to traction steel-cable when not applying active force to traction steel-cable to pouring weight
In tight state.
Two close end position is respectively equipped with the flange radially towards outer lug on the lateral wall of the spiral rod, and the flange is near
The end face in spiral rod centre position is provided with the conical surface of an evagination, and the both ends corresponding to the bus of the conical surface are outer with spiral rod respectively
Side wall connects with the end face transition of flange.
The lateral wall two close end position of the spiral rod is respectively equipped with the flange radially towards outer lug, between two flanges
Provided with the annular ring corresponding with respective flange, annular ring is placed on spiral rod, and the flange is provided with for each self-corresponding
The annular groove of annular ring insertion, annular ring are limited in annular groove vertically, pass through plane axis between annular ring and flange
Hold and be rotatably assorted.
The longitudinal section of the cavity vertically is shaped as a truncated cone-shaped, and the bottom to pouring weight is provided with and is provided from moving
Winding mechanism loads the lower openings of cavity.
The connecting seat is provided with the taper surface to be leant with cavity madial wall.
Radial direction of the groove width of the neck along directive wheel from linearly successively decreasing inside outside, and the upper surface of the fixture block is edge
The arc surface of the footpath convex of directive wheel.
Described fixture block refers to the removable connection of neck, and some permanent magnets, described card are embedded on the groove inwall of neck
Block is made up of magnetic material.
After above structure, a kind of elevator drag device of the invention has advantages below compared with prior art：It is first
First, it is locked to pouring weight and car in overhauling elevator and when not acting power to traction steel-cable, make to drag by pre-tightening mechanism
Draw steel wire rope to fit in all the time on the directive wheel of each part, avoid the risk that traction steel-cable slips from directive wheel, secondly,
Only need to pull traction steel-cable to overcome the pre- of pre-tightening mechanism when operating personnel are changed or repaired to local directive wheel
Clamp force, the replacing of local directive wheel is realized, its is easy to operate, finally, by setting second pair of pouring weight, can improve elevator lifting
The stationarity of process.
Brief description of the drawings
Fig. 1 is a kind of structural representation of elevator drag device of the present invention.
Fig. 2 is the structural representation of the counterweight block portion point of the present invention.
Fig. 3 is the close-up schematic view in " A " region in Fig. 2.
Fig. 4 is the close-up schematic view of another structure in " A " region in Fig. 2.
Fig. 5 is the structural representation of the directive wheel part of the present invention.
Fig. 6 is the schematic cross-sectional view in " B-B " direction in Fig. 5.
Wherein, 1, traction machine, 1.1, driving wheel, 2, traction steel-cable, 3, to pouring weight, 3.1, cavity, 3.2, upper opening,
4th, car, 4.1, directive wheel, 4.1.1, annular groove, 4.1.2, neck, 5, automatic winding mechanism, 6, connecting seat, 6.1, taper
Face, 7, spiral rod, 7.1, radial direction through hole, 7.2, flange, 7.3, the conical surface, 8, torsion spring, 9, annular ring, 10, plane bearing, 11, sedan-chair
Railway carriage or compartment rope hitch plate, 12, fixture block, 12.1, upper surface, 13, permanent magnet.
Embodiment
The invention will be further described with reference to the accompanying drawings and detailed description.
The present invention provides a kind of elevator drag device, and it includes traction machine 1, the traction steel-cable being installed in elevator hoistways
2 and located at the lower section of traction machine 1 to pouring weight 3, it is characterised in that：One end of traction steel-cable 2 and the inwall of elevator hoistways are fixed,
The other end of traction steel-cable 2 sequentially surround the master on the directive wheel 4.1 and traction machine 1 of the bottom of car 4 along its length direction
Driving wheel 1.1, and with being fixed to pouring weight 3, it is described to be used to furl at traction steel-cable 2 to traction steel-cable 1 to being provided with pouring weight 3
In the automatic winding mechanism 5 of tight state.The outer circle wall of the directive wheel 4.1 is provided with to be surrounded on for traction steel-cable 2 and led
Annular groove 4.1.1 on wheel 4.1, annular groove 4.1.1 bottom land position be provided with least three along directive wheel 4.1 radial direction
The circumference of neck 4.1.2, whole neck 4.1.2 along directive wheel 4.1 that inscribe is formed is uniformly distributed, and is set in the neck 4.1.2
There are fixture block 12, fixture block 12 and the removable connections of neck 4.1.2, the fixture block 12 is carried on the back when fixture block 12 is installed in neck 4.1.2
Upper surface 12.1 from the axis of directive wheel 4.1 is placed on outside neck 4.1.2 and in annular groove 4.1.1, the traction steel
Cord 2 with the rotation of directive wheel 4.1 and the upper surface 12.1 of fixture block 12 against or disengage.
Preferably, one end of traction steel-cable 2 is fixed with lift car rope head plate 11, lift car rope head plate 11 and elevator hoistways
Inwall is fixed.
It is described to being provided with cavity 3.1 in pouring weight 3, to the top of pouring weight 3 provided with penetrating cavity 3.1 for traction steel-cable 2
Upper opening 3.2, the bottom of cavity 3.1 are provided with connecting seat 6, and one end and the connecting seat 6 of traction steel-cable 2 are fixed, described automatic
Winding mechanism 5 is installed in cavity 3.1 and the position between upper opening 3.2 and connecting seat 6.
Described automatic winding mechanism 5 includes a spiral rod 7, and the both ends of spiral rod 7 rotate with the inwall of cavity 3.1 matches somebody with somebody
Close, the centre position of spiral rod 7 vertically be provided with for the break-through of traction steel-cable 2 radial direction through hole 7.1, the end of spiral rod 7 with
The torsion spring 8 for being used for driving spiral rod 7 to rotate is provided between the inwall of cavity 3.1, traction steel-cable 2 is rolled up when being rotated with spiral rod 7
On the outer circle wall for closing at spiral rod 7, when car 4 and to pouring weight 3 not to traction steel-cable 2 apply active force when the torsion spring 8
Drive spiral rod 7 to turn to traction steel-cable 2 and be in tight state.
Two close end position is respectively equipped with the flange 7.2 radially towards outer lug on the lateral wall of the spiral rod 7, described convex
The end face in the nearly centre position of spiral rod 7 of edge 7.2 is provided with the conical surface 7.3 of an evagination, the both ends corresponding to the bus of the conical surface 7.3 point
End face transition not with the lateral wall and flange 7.2 of spiral rod 7 is connected.
The lateral wall two close end position of the spiral rod 7 is respectively equipped with the flange 7.2 radially towards outer lug, two flanges
The annular ring 9 corresponding with respective flange 7.2 is provided between 7.2, annular ring 9 is placed on spiral rod 7, on the flange 7.2
Provided with the annular groove being embedded in for each self-corresponding annular ring 9, annular ring 9 is limited in annular groove vertically, annular ring 9 with
It is rotatably assorted between flange 7.2 by plane bearing 10.
The longitudinal section of the cavity 3.1 vertically is shaped as a truncated cone-shaped, and the bottom to pouring weight 3, which is provided with, to be supplied
Automatic winding mechanism 5 loads the lower openings of cavity 3.1.
The connecting seat 6 is provided with the taper surface 6.1 to be leant with the madial wall of cavity 3.1.
Radial direction of the groove width of the neck 4.1.2 along directive wheel 4.1 from linearly successively decreasing inside outside, and the fixture block 12
Upper surface 12.1 is the arc surface along the footpath convex of directive wheel 4.1.
Described fixture block 12 refers to the removable connections of neck 4.1.2, and some permanent magnetism are embedded on neck 4.1.2 groove inwall
Body 13, described fixture block 12 are made up of magnetic material.Fixture block 12 and the adhesive of permanent magnet 13.Preferably, the fixture block 12 includes
Pellet and matrix, pellet are made up of magnetic material, in the pellet insertion and matrix.
The operation principle of its overhauling elevator process is：
First, locked car, is driven reversely up to pouring weight by chain block, makes car and to pouring weight no longer to traction
Steel wire rope acts power, consequently facilitating traction steel-cable releases, in the process, pre-tightening mechanism work, drives traction steel
Cord is close on each directive wheel by less pretightning force, and secondly, operating personnel carry out maintenance repair, when needing carry out office
When portion's directive wheel is changed, traction steel-cable is first pulled to overcome the less pretightning force of pre-tightening mechanism offer and make traction steel-cable near
The part for the directive wheel for needing to overhaul is released with directive wheel, then completes the replacing of directive wheel, then traction steel-cable is around in newly
Directive wheel on, finally reset car and to pouring weight complete overhaul.In the process, the pretightning force that pre-tightening mechanism provides only exists
In the gravity for overcoming traction steel-cable itself, so pretightning force is smaller, traction steel-cable can be made by being pulled by manpower
It is local to depart from directive wheel.It can certainly be completed by manual labor-saving tool, such as chain block, lever etc..
Preferred embodiments of the present invention are described above, but are not to be construed as limiting the scope of the invention.This hair
Bright to be not only limited to above example, its concrete structure allows to change, all institutes in the protection domain of demand for independence of the present invention
The various change of work is within the scope of the present invention.
Claims (7)
1. a kind of elevator drag device, traction machine (1) that it includes being installed in elevator hoistways, traction steel-cable (2) and it is located at
Below traction machine (1) to pouring weight (3), it is characterised in that：One end of traction steel-cable (2) and the inwall of elevator hoistways are fixed,
The other end of traction steel-cable (2) is along its length direction sequentially around the directive wheel (4.1) and traction machine of car (4) bottom
(1) driving wheel (1.1) on, and with fixed to pouring weight (3), it is described to be used to furl traction steel-cable to being provided with pouring weight (3)
(2) automatic winding mechanism (5) of tight state is in traction steel-cable (1), is set on the outer circle wall of the directive wheel (4.1)
There are the annular groove (4.1.1) being surrounded on for traction steel-cable (2) on directive wheel (4.1), the bottom land position of annular groove (4.1.1)
At least three necks (4.1.2) formed along the radial direction inscribe of directive wheel (4.1) are installed, whole necks (4.1.2) edges are oriented to
The circumference of wheel (4.1) is uniformly distributed, and is provided with fixture block (12) in the neck (4.1.2), fixture block (12) and neck (4.1.2) are removable
Formula connect, when fixture block (12) be installed on neck (4.1.2) it is interior when the fixture block (12) deviate from directive wheel (4.1) axis upper surface
(12.1) neck (4.1.2) is placed on outside and in annular groove (4.1.1), and the traction steel-cable (2) is with directive wheel
(4.1) upper surface (12.1) of rotation and fixture block (12) against or disengage；
It is described to being provided with cavity (3.1) in pouring weight (3), to the top of pouring weight (3) provided with penetrating cavity for traction steel-cable (2)
(3.1) upper opening (3.2), the bottom of cavity (3.1) are provided with connecting seat (6), one end of traction steel-cable (2) and connecting seat
(6) it is fixed, the automatic winding mechanism (5) be installed in cavity (3.1) and positioned at upper opening (3.2) and connecting seat (6) it
Between position；
Described automatic winding mechanism (5) includes a spiral rod (7), and the both ends of spiral rod (7) rotate with the inwall of cavity (3.1)
Coordinate, the centre position of spiral rod (7) vertically is provided with the radial direction through hole (7.1) for traction steel-cable (2) break-through, spiral rod
(7) torsion spring (8) for being used for driving spiral rod (7) to rotate, traction steel-cable are provided between end and the inwall of cavity (3.1)
(2) furled when being rotated with spiral rod (7) on the outer circle wall of spiral rod (7), when car (4) and to pouring weight (3) not to traction
The torsion spring (8) drives spiral rod (7) to turn to traction steel-cable (2) and is in tight state during steel wire rope (2) application active force.
A kind of 2. elevator drag device according to claim 1, it is characterised in that：On the lateral wall of the spiral rod (7)
Two close end position is respectively equipped with the flange (7.2) radially towards outer lug, nearly spiral rod (7) centre position of the flange (7.2)
End face be provided with the conical surface (7.3) of an evagination, both ends corresponding to the bus of the conical surface (7.3) are outer with spiral rod (7) respectively
The end face transition of side wall and flange (7.2) connects.
A kind of 3. elevator drag device according to claim 1, it is characterised in that：The lateral wall of the spiral rod (7) is near
End positions are respectively equipped with the flange (7.2) radially towards outer lug, are provided with and respective flange between two flanges (7.2)
(7.2) corresponding annular ring (9), annular ring (9) are placed on spiral rod (7), and the flange (7.2) is provided with for each corresponding
The embedded annular groove of annular ring (9), annular ring (9) is limited in annular groove vertically, annular ring (9) and flange
(7.2) it is rotatably assorted between by plane bearing (10).
A kind of 4. elevator drag device according to claim 1, it is characterised in that：The cavity (3.1) is vertically
Longitudinal section be shaped as a truncated cone-shaped, the bottom to pouring weight (3) is provided with loads cavity for automatic winding mechanism (5)
(3.1) lower openings.
A kind of 5. elevator drag device according to claim 4, it is characterised in that：The connecting seat (6) is provided with and sky
The taper surface (6.1) that chamber (3.1) madial wall leans.
A kind of 6. elevator drag device according to claim 1, it is characterised in that：The groove width edge of the neck (4.1.2)
The radial direction of directive wheel (4.1) from linearly successively decreasing inside outside, and the upper surface (12.1) of the fixture block (12) is along directive wheel
(4.1) arc surface of footpath convex.
A kind of 7. elevator drag device according to claim 6, it is characterised in that：Described fixture block (12) and neck
(4.1.2) removable connection refers to, some permanent magnets (13), described fixture block (12) are embedded on the groove inwall of neck (4.1.2)
It is made up of magnetic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610442614.4A CN105858420B (en) | 2016-06-17 | 2016-06-17 | A kind of elevator drag device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610442614.4A CN105858420B (en) | 2016-06-17 | 2016-06-17 | A kind of elevator drag device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105858420A CN105858420A (en) | 2016-08-17 |
| CN105858420B true CN105858420B (en) | 2017-12-29 |
Family
ID=56649781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610442614.4A Active CN105858420B (en) | 2016-06-17 | 2016-06-17 | A kind of elevator drag device |
Country Status (1)
| Country | Link |
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| CN (1) | CN105858420B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109626180B (en) * | 2018-12-12 | 2020-06-12 | 浙江鲸叹科技有限公司 | Elevator floor sign |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101979302A (en) * | 2010-10-27 | 2011-02-23 | 曹锦泉 | Variable counterweight elevator and variable counterweight hydraulic elevator |
| CN201808995U (en) * | 2010-08-25 | 2011-04-27 | 莫汉润 | Lift device with adjustable counterweight |
| CN102892702A (en) * | 2010-03-11 | 2013-01-23 | 通力股份公司 | Method for manufacturing or modernizing a traction sheave elevator, and traction sheave elevator |
| CN104355211A (en) * | 2014-10-30 | 2015-02-18 | 王洋 | Balance weight body with self-tensioning effect |
| CN204549762U (en) * | 2015-04-14 | 2015-08-12 | 赵忠义 | Two host driven elevator |
-
2016
- 2016-06-17 CN CN201610442614.4A patent/CN105858420B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102892702A (en) * | 2010-03-11 | 2013-01-23 | 通力股份公司 | Method for manufacturing or modernizing a traction sheave elevator, and traction sheave elevator |
| CN201808995U (en) * | 2010-08-25 | 2011-04-27 | 莫汉润 | Lift device with adjustable counterweight |
| CN101979302A (en) * | 2010-10-27 | 2011-02-23 | 曹锦泉 | Variable counterweight elevator and variable counterweight hydraulic elevator |
| CN104355211A (en) * | 2014-10-30 | 2015-02-18 | 王洋 | Balance weight body with self-tensioning effect |
| CN204549762U (en) * | 2015-04-14 | 2015-08-12 | 赵忠义 | Two host driven elevator |
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| Publication number | Publication date |
|---|---|
| CN105858420A (en) | 2016-08-17 |
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Effective date of registration: 20190701 Address after: 324000 Times Town, Southeast Quzhou City, Zhejiang Province, 3 834 Rooms Patentee after: Zhejiang Zhengtong Science and Technology Consulting Co., Ltd. Address before: 315177 No. 130 Central Road, Gulin Town, Yinzhou District, Ningbo, Zhejiang Patentee before: Cao Shiqing |
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Effective date of registration: 20190806 Address after: 324000 No. 1 Panlong West Road, Donggang, Quzhou City, Zhejiang Province Patentee after: Quzhou Wanlong Machinery Manufacturing Co., Ltd. Address before: 324000 Times Town, Southeast Quzhou City, Zhejiang Province, 3 834 Rooms Patentee before: Zhejiang Zhengtong Science and Technology Consulting Co., Ltd. |
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