CN114275648A - Elevator upper beam - Google Patents
Elevator upper beam Download PDFInfo
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- CN114275648A CN114275648A CN202111544086.0A CN202111544086A CN114275648A CN 114275648 A CN114275648 A CN 114275648A CN 202111544086 A CN202111544086 A CN 202111544086A CN 114275648 A CN114275648 A CN 114275648A
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- main beam
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Abstract
The invention discloses an elevator upper beam, which comprises: the elevator car comprises a main beam and an auxiliary beam, wherein the main beam is connected to the top end of the car along the width direction of the car, the auxiliary beam is arranged at the upper end of the main beam, and the main beam and the auxiliary beam are arranged in a cross manner, wherein the main beam comprises a main beam body, the main beam body is a strip-shaped groove body with an upward opening, two side edges of the groove body are bent in a right angle way back to the outside and then bent in a second right angle way downwards, the auxiliary beam comprises an auxiliary beam body, the auxiliary beam body comprises two bent steel plates which are arranged in parallel at intervals, and any bent steel plate is formed by bending the strip-shaped steel plates in a right angle way towards the same surface for the first time and then bending in a second right angle way relatively; and the two sets of return rope wheel assemblies are respectively arranged at two ends of the auxiliary beam. The present invention can maintain the wrap angle on the traction sheave constant at 180 ° all the time, thereby providing a sufficient and appropriate traction force.
Description
Technical Field
The invention relates to the technical field of elevators, in particular to an upper beam of an elevator.
Background
Along with the development of traction type passenger elevator technology, the requirements of the market on the performance, carrying capacity, safety, installation convenience and the like of elevator products are increasingly improved, the structures and arrangement schemes of elevators are more diversified, and the combination of the rope pulley arrangement scheme and the change of the rope pulley beam structure of the whole elevator is gradually changed along with the product lifting requirements and the change of national elevator standards, so that the elevator has stronger adaptability. The new national standard GB/T7588.1-2020 for elevator has new requirements for the safety space at the top of the elevator car, see in particular GB/T7588.1-5.2.5.7. The rope wheel beam of the elevator car frame is an important part for supporting the weight of the whole car frame and playing a role in guiding a steel wire rope, and can be combined with a driving host and the steel wire rope to be designed into various rope wheel arrangement schemes.
At present, the upper beam structure of the traditional rear counterweight elevator in the market is diversified, and the problem that the danger avoiding space of the car roof is insufficient mainly exists. The structural arrangement scheme of the rope pulley and the rope pulley beam also influences whether the car roof danger avoiding space under the new standard requirement can be met. Some elevators with special upper beam structures have some advantages highlighted in design consideration under the old standard environment, such as stronger traction force, but the car roof danger avoiding space required by a new standard cannot be met, so that the upper beams of the structures cannot be used in the future.
Disclosure of Invention
The elevator upper beam structure can maximize and keep the wrap angle of the steel wire rope on the traction sheave constant under the condition of single winding, and is not influenced by the size change of the elevator car, so that the strong traction capacity is ensured and the standard requirement is not exceeded. The specific technical scheme is as follows:
an elevator upper beam comprising:
the elevator car comprises a main beam and an auxiliary beam, wherein the main beam is connected to the top end of the car along the width direction of the car, the auxiliary beam is arranged at the upper end of the main beam, the main beam and the auxiliary beam are arranged in a cross manner,
wherein the main beam comprises a main beam body, the main beam body is a strip-shaped groove body with an upward opening, two side edges of the groove body are bent at right angles back to the outside for the first time and then bent at right angles for the second time,
the auxiliary beam comprises an auxiliary beam body, the auxiliary beam body comprises two bent steel plates which are arranged in parallel at intervals, and any bent steel plate is formed by performing one-time right-angle bending on the same surface by adopting a strip-shaped steel plate and then performing a second-time right-angle bending relatively;
and the two sets of return rope wheel assemblies are respectively arranged at two ends of the auxiliary beam.
Optionally, a plurality of main beam inner ribs are connected to a plurality of positions in the groove between the two side edges of the main beam body, a plurality of main beam outer ribs are also respectively connected to the outside of the groove, and the main beam outer ribs are covered in the right-angle bent positions.
Optionally, the secondary beam further comprises a secondary beam inner rib, a secondary beam outer rib and a secondary beam reinforcing plate, the bending faces of the two bent steel plates face towards the outside, the secondary beam inner rib is connected at multiple positions between the two bent steel plates, the bending positions are provided with a plurality of secondary beam outer ribs, the secondary beam outer ribs are covered at the right-angle bending positions, and the secondary beam reinforcing plate is arranged at the position connected with the primary beam.
Optionally, an L-shaped main beam reinforcing plate is connected to the connection portion of the auxiliary beam, and two right-angle sides of the L-shaped main beam reinforcing plate are abutted against a primary right-angle bending portion of the side edge.
Optionally, the suspension connection device further comprises a plurality of sets of suspension connection pieces, any set of suspension connection piece comprises a welding plate bolt and a lower backing plate, the welding plate bolt is formed by welding and combining a perforated bolt and a steel plate, a hole for inserting a cotter pin is formed in a screw end of the bolt, an upper backing plate is welded at a nut end of the bolt, the lower backing plate is installed in a bending groove formed by primary bending and secondary bending of the main beam, the welding plate bolt is installed in a bending groove formed by primary bending and secondary bending of the secondary beam and between inner ribs of the secondary beam, and the screw end of the welding plate bolt penetrates through the main beam and is fastened through a nut to connect the secondary beam and the main beam.
Optionally, any set of the return rope wheel assembly comprises a return rope wheel, a wheel shaft, a shaft clamping plate, side plates and a rope blocking shaft, wherein the two side plates are arranged in parallel at intervals, two ends of the wheel shaft penetrate into the side plates, the end part of the wheel shaft penetrating out of the side plates is fixed by the shaft clamping plate, the return rope wheel is installed on the wheel shaft, and the rope blocking shaft is arranged on the periphery of the return rope wheel and is located at the periphery of the entry point and the exit point of the steel wire rope on the return rope wheel.
Optionally, any set of the return sheave assemblies further comprises a fixing bolt for mounting the return sheave assemblies on the secondary beam, and the fixing bolts of the two sets of the return sheave assemblies are located at the lower parts of the respective side plates and the corners far away from each other.
Optionally, the elevator further comprises a steel wire rope, wherein the steel wire rope is wound upwards from one fixed end through the bottom of the counterweight wheel, downwards wound through the top of the traction wheel, wound around the bottoms of the two return rope wheel assemblies and then upwards connected to the other fixed end.
Optionally, a space above one end of the main beam is used as a risk avoiding space.
Optionally, a radial strip-shaped sliding groove is formed in the side plate, and bolts connected to two ends of the rope blocking shaft penetrate into the strip-shaped sliding groove.
The arrangement scheme of the rope pulley and the upper beam structure of the elevator are based on the position of the main stream counterweight (namely the arrangement of the rear counterweight) of the small machine room elevator, can meet the depth range of almost all specifications of cars and the width range of most large cars, and have the following beneficial effects:
(1) the platform for people to stand is arranged on any side above the main beam, the width of the auxiliary beam is as narrow as possible, so that the upper space of the platform for people to stand can serve as a danger avoiding space, the platform is suitable for a large car width range, the danger avoiding space is arranged so that the height of the top layer of a building is not too high due to the reduction of the height of the main beam and the height of the space, personnel can easily climb over the danger avoiding space, the maintenance is convenient, and the maintenance personnel can conveniently and quickly avoid dangers. The new standard requires that the number of the car roof danger avoiding spaces is at least one, and the station people platform can be arranged on each of the two sides of the main beam, so that two danger avoiding spaces can be obtained simultaneously, and the personnel safety is guaranteed to a greater extent.
(2) According to the arrangement scheme of the rope wheel, when the depth size of the car changes, the length of the auxiliary beam changes, the distance between the two return rope wheel assemblies also changes, and further the rope is always kept on the same vertical line at the rope outlet point of the return rope wheel assemblies and the rope outlet point of the traction wheel, so that the wrap angle of the arranged rope on the traction wheel is always kept constant at 180 degrees, and the wrap angle value of 180 degrees is calculated according to the traction force, so that the elevator has enough and proper traction force under various working conditions during operation, and the slipping of the rope or the reverse winding of the car is avoided.
(3) The resultant force of the tension of the steel wire ropes can ensure the strength of the beam body and the local structural strength of the joint, and meanwhile, the stress model is more stable.
(4) The machine room does not need a guide wheel, the length of the auxiliary beam can be changed along with the change of the depth of the car, so that the rope outlet point of the rope return wheel assembly and the rope outlet point of the traction wheel are always kept on the same vertical line, and the distance of a hoisting center of the machine room does not need to be adjusted by the guide wheel. The machine room structure is simple, and the number of mounting components is reduced. The auxiliary beam is convenient to hoist on site, place, adjust and position, the main beam is connected with the auxiliary beam, and the auxiliary beam is connected with the return rope wheel assembly and is convenient to install.
(5) The arrangement scheme of the rope wheel is single winding, the cost increase of a main machine and a driving bearing part is avoided, and the weight of the overall system including the car frame and the counterweight of the cross beam can be properly reduced due to the strong traction capacity. The wrap angle of the steel wire rope on the traction sheave and the weight of the system are two important factors influencing the strength of the traction force, the wrap angle of the elevator rope is kept constant at 180 degrees, and the wrap angle is the maximum wrap angle value of a single-winding elevator, so that a certain space can be provided for lightening the weight of the system on the premise of ensuring the sufficient traction force, and the manufacturing cost is saved.
(6) According to the arrangement scheme of the rope wheel, the rope returning wheel component is completely positioned above the main beam, so that the interference between the rope returning wheel component and the main beam when the depth of the car is too shallow can be avoided, and the arrangement scheme can adapt to almost all car depth dimension specifications on the market.
Drawings
The above features and technical advantages of the present invention will become more apparent and readily appreciated from the following description of the embodiments thereof taken in conjunction with the accompanying drawings.
Fig. 1 is a schematic perspective view showing an elevator upper beam according to an embodiment of the present invention;
fig. 2 is a side view showing an elevator upper beam of the embodiment of the present invention;
fig. 3 is another side view of an elevator upper beam showing an embodiment of the present invention;
FIG. 4 is a schematic perspective view of a main beam illustrating an embodiment of the present invention;
FIG. 5 is a side view of a main beam illustrating an embodiment of the present invention;
FIG. 6 is a schematic perspective view showing a top view of a secondary beam of an embodiment of the present invention;
FIG. 7 is a schematic bottom perspective view of a secondary beam according to an embodiment of the present invention;
FIG. 8 is a side view of a secondary beam illustrating an embodiment of the present invention;
FIG. 9 is a schematic perspective view of a suspension link illustrating an embodiment of the invention;
fig. 10 is a perspective view of a return sheave assembly of an embodiment of the present invention;
fig. 11 is a side view of a return sheave assembly illustrating an embodiment of the present invention;
fig. 12 is a schematic diagram showing an elevator upper beam suspension of an embodiment of the present invention;
fig. 13 is a force diagram illustrating a return sheave assembly according to an embodiment of the present invention.
Detailed Description
The embodiments of the present invention will be described below with reference to the accompanying drawings. Those of ordinary skill in the art will recognize that the described embodiments can be modified in various different ways, or combinations thereof, without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims. Furthermore, in the present description, the drawings are not to scale and like reference numerals refer to like parts.
The elevator upper beam of the invention is shown in fig. 1 to 3 and comprises a main beam 4, a secondary beam 5, a return rope wheel assembly 6, a suspension connecting piece 7 and a people standing platform 8, wherein the secondary beam 5 is arranged at the upper end of the main beam 4, the main beam 4 and the secondary beam 5 are in a crisscross arrangement, and the main beam is arranged along the width direction of the car, so that the secondary beam 5 is arranged along the depth direction of the car. Wherein, as shown in fig. 4 and 5, the main beam 4 comprises a main beam body 9, the main beam body 9 is a strip-shaped groove body with an upward opening, and two side edges of the groove body are bent at a right angle for the first time and then bent at a right angle for the second time back to the outside, so as to form a structure similar to an inverted. The inner main beam rib 12 is welded at a plurality of positions in the groove between the two sides, and two ends of the inner main beam rib 12 are connected with the two sides. A plurality of main beam outer ribs 11 are also welded outside the groove respectively, the main beam outer ribs 11 are covered at the right-angle bent part, the main beam outer ribs can be connected to the main beam body 9 in a welding mode, and the strength of the main beam body 9 is further enhanced by welding the main beam outer ribs with the right-angle bent part.
The L-shaped main beam reinforcing plate 10 is welded at the connecting part of the auxiliary beam 5, so that the stability and the non-deformation of the integral strength are ensured when the tension is applied. Two right-angle sides of the L-shaped main beam reinforcing plate 10 are abutted against the primary right-angle bending part of the side edge.
As shown in fig. 6 to 8, the secondary beam 5 includes a secondary beam body 13, a secondary beam inner rib 14, a secondary beam outer rib 15, and a secondary beam reinforcing plate 16, wherein the secondary beam body 13 includes two bent steel plates arranged in parallel at intervals, and any bent steel plate is a bent steel plate similar to a C shape formed by performing a first right-angle bending to the same surface by using a strip-shaped steel plate and then performing a second right-angle bending relatively. The one side of bending of two steel sheets of bending all faces to the outside, has muscle 14 in the auxiliary girder in the welding of many places between two steel sheets of bending, is provided with a plurality of auxiliary girder outer muscle 15 in the department of bending, and the right angle department of bending covers auxiliary girder outer muscle 15 wherein, can adopt welded mode to connect it on auxiliary girder body 13, has further strengthened auxiliary girder body 13's intensity with the welding of right angle department of bending.
The auxiliary beam reinforcing plate 16 is welded at the connecting part of the main beam 4, so that the beam body strength is stable and does not deform when the connecting part is pulled.
As shown in fig. 2 and 9, the suspension connecting members 7 are identical and have four sets, and each set of suspension connecting member 7 includes a welded plate bolt 24 and a lower backing plate 23. The weld plate bolt 24 is formed by welding a bolt with a hole and a steel plate, specifically, a hole for inserting the cotter pin 241 is formed at the screw end of the bolt, and the upper backing plate 242 is welded at the nut end of the bolt. The lower backing plate 23 is installed in the bending groove formed by primary bending and secondary bending of the main beam 4, the welding plate bolt 24 is installed in the bending groove formed by primary bending and secondary bending of the auxiliary beam 5, the screw end of the welding plate bolt 24 penetrates through the main beam 4, the upper backing plate 242 of the welding plate bolt 24 can be clamped between the bending groove formed by secondary bending and the auxiliary beam outer rib 15 of the auxiliary beam body 13 when being locked, and between the auxiliary beam inner ribs 14, the auxiliary beam is prevented from rotating, then the auxiliary beam 5 and the main beam 4 can be stably connected by screwing a nut with a wrench, and the lower side penetrates into the opening pin 241 to prevent falling off. The welded plate bolts 24 and the lower backing plate 23 of the suspension connecting piece 7 have the functions of enhancing the thickness of materials at the connecting part and dispersing the stressed area, so that the structural strength is further enhanced.
The return rope wheel assemblies 6 are provided with two sets and are completely the same, and as shown in fig. 10 and 11, each set comprises a return rope wheel 17, a wheel shaft 18, a shaft clamping plate 19, a side plate 20, a rope blocking shaft 21 and a fixing bolt 22. The two side plates 20 are arranged in parallel at intervals, two ends of the wheel shaft 18 penetrate into the side plates 20, and the end parts of the wheel shaft, which penetrate out of the side plates 20, are fixed by the shaft clamping plates 19. The rope return wheel 17 is installed on the wheel shaft 18, the rope blocking shaft 21 is arranged on the periphery of the rope return wheel 17, specifically, the rope blocking shaft 21 is located near the entry point and the exit point of the steel wire rope 2 on the rope return wheel 17, a radial strip-shaped sliding groove is formed in the side plate 20, bolts at two ends of the rope blocking shaft 21 penetrate into the strip-shaped sliding groove, and the distance between the rope blocking shaft 21 and the steel wire rope 2 can be adjusted through sliding so as to prevent the steel wire rope 2 from accidentally jumping out of the groove in the running process.
The fixing bolts 22 are used for mounting the return sheave assemblies 6 on the sub-beam, and the fixing bolts of the two sets of return sheave assemblies 6 are located at the lower portions of the respective side plates 20 and at the corners away from each other. When the rope return device is installed, the two groups of rope return wheel assemblies 6 are arranged in one end of the auxiliary beam 5 in the same mode, the side plate 20 is attached to the inner side of the auxiliary beam body 13 and pre-tightened, and the fixing bolts 22 are fastened after the parallelism and the respective verticality of the two rope return wheels 17 are adjusted.
The car is suspended using the upper beam of the elevator so that the wire rope 2 goes from the counterweight sheave 30 up to the traction sheave 1 and down through two return sheave assemblies 6 on the car placed on the secondary beam to complete the roping arrangement. Because the special arrangement of the position of the fixing bolt 22 is fixed at the outer left lower corner or the outer right lower corner of the rope return wheel assembly 6, the action line of the resultant force F3 of the tension F1 and the tension F2 of the steel wire rope 2 borne by the rope return wheel assembly 6 in the actual use of the elevator forms an included angle of 45 degrees with the horizontal plane, and the included angle just passes through the centers of the fixing ranges of the plurality of fixing bolts 22, so that the side plate 20 is free from bending moment, the actual stress model is more reasonable, and the bearing force is more stable.
In the rope winding scheme, when the depth dimension of the car changes, the length of the auxiliary beam 5 can also change along with the change of the depth dimension of the car, so that the distance between the two return rope wheel assemblies 6 also changes along with the change of the depth dimension of the car, and further, the wrap angle of the steel wire rope 2 on the traction wheel 1 is always kept constant at 180 degrees by keeping the rope outlet point of the steel wire rope 2 on the same vertical line with the rope outlet point of the traction wheel 1, and the wrap angle value of 180 degrees is calculated according to the traction force, so that the elevator has enough and proper traction force under various working conditions in the running process, and the steel wire rope is prevented from slipping or the car is prevented from reversely rolling.
Further, because the height of the main beam 4 and the height of the space do not need to be matched with the return rope wheel assembly 6 to complete suspension, the height of the main beam 4 and the height of the space can be reduced as much as possible, the height of the auxiliary beam 5 is matched with the return rope wheel assembly 6 to complete suspension, and the width of the auxiliary beam 5 can be narrowed as much as possible, so that the people standing platforms 8 can be arranged on any side above the main beam 4, the space above the people standing platforms can be used as a danger avoiding space, two people standing platforms 8 can be arranged on two sides above the main beam 4 at the same time, two danger avoiding spaces are obtained at the same time, and the height of the danger avoiding spaces does not enable the height of the top layer of a building to be too high.
Further, when the car depth is reduced, the length of the auxiliary beam 5 and the distance between the two return rope pulley assemblies 6 are reduced, and as shown in fig. 2 and 3, the return rope pulley assemblies 6 are completely positioned above the main beam 4, so that the return rope pulley assemblies 6 cannot collide with the main beam 4, and the limit size of the return rope pulley assemblies can be adapted to almost all car depth size specifications on the market.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An elevator upper beam, comprising:
the elevator car comprises a main beam and an auxiliary beam, wherein the main beam is connected to the top end of the car along the width direction of the car, the auxiliary beam is arranged at the upper end of the main beam, the main beam and the auxiliary beam are arranged in a cross manner,
wherein the main beam comprises a main beam body, the main beam body is a strip-shaped groove body with an upward opening, two side edges of the groove body are bent at right angles back to the outside for the first time and then bent at right angles for the second time,
the auxiliary beam comprises an auxiliary beam body, the auxiliary beam body comprises two bent steel plates which are arranged in parallel at intervals, and any bent steel plate is formed by performing one-time right-angle bending on the same surface by adopting a strip-shaped steel plate and then performing a second-time right-angle bending relatively;
and the two sets of return rope wheel assemblies are respectively arranged at two ends of the auxiliary beam.
2. The elevator upper beam according to claim 1,
the groove between the two sides of the main beam body is connected with a plurality of main beam inner ribs at a plurality of positions, the groove is also respectively connected with a plurality of main beam outer ribs, and the main beam outer ribs are covered in the groove at the right-angle bending position.
3. The elevator upper beam according to claim 1,
the auxiliary beam further comprises an auxiliary beam inner rib, an auxiliary beam outer rib and an auxiliary beam reinforcing plate, the bending faces of the two bending steel plates face towards the outside, the auxiliary beam inner ribs are connected at multiple positions between the two bending steel plates, a plurality of auxiliary beam outer ribs are arranged at the bending positions, the auxiliary beam outer ribs are covered at the right-angle bending positions, and the auxiliary beam reinforcing plate is arranged at the position connected with the main beam.
4. The elevator upper beam according to claim 1, wherein an L-shaped main beam reinforcing plate is connected to a connection portion with the secondary beam, and two right-angle sides of the L-shaped main beam reinforcing plate are abutted against a single right-angle bend of the side edge.
5. The elevator upper beam according to claim 1, further comprising a plurality of sets of suspension connectors, wherein any set of suspension connector comprises a welding plate bolt and a lower backing plate, the welding plate bolt is formed by welding and combining a bolt with a hole and a steel plate, a hole for inserting a cotter pin is formed in the screw end of the bolt, an upper backing plate is welded at the screw cap end of the bolt, the lower backing plate is installed in a bending groove formed by primary bending and secondary bending of the main beam, the welding plate bolt is installed in a bending groove formed by primary bending and secondary bending of the secondary beam and between inner ribs of the secondary beam, the screw end of the welding plate bolt penetrates through the main beam and is fastened through a nut, and the secondary beam is connected with the main beam.
6. The elevator upper beam according to claim 1, wherein any set of the return sheave assembly comprises a return sheave, a wheel shaft, a shaft clamping plate, side plates and a rope blocking shaft, the two side plates are arranged in parallel at intervals, two ends of the wheel shaft penetrate into the side plates, the end parts of the wheel shaft penetrating out of the side plates are fixed by the shaft clamping plate, the return sheave is arranged on the wheel shaft, and the rope blocking shaft is arranged on the periphery of the return sheave and is positioned at the periphery of an entry point and an exit point of the steel wire rope on the return sheave.
7. The elevator upper beam according to claim 1, wherein any set of the return sheave assemblies further comprises fixing bolts for mounting the return sheave assemblies on the secondary beam, the fixing bolts of the two sets of the return sheave assemblies being located at the lower portions of the respective side plates and at the corners away from each other.
8. The elevator upper beam according to claim 1, further comprising a wire rope wound upward from one fixed end through the bottom of the counterweight sheave and downward through the top of the traction sheave and then around the bottoms of the two return sheave assemblies and then connected upward to the other fixed end.
9. The elevator upper beam according to claim 1, wherein a space above one end of the main beam serves as a risk avoiding space.
10. The elevator upper beam according to claim 6, wherein a strip-shaped sliding groove is formed in the side plate in the radial direction, and a bolt connected to both ends of the rope stopping shaft penetrates into the strip-shaped sliding groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111544086.0A CN114275648A (en) | 2021-12-16 | 2021-12-16 | Elevator upper beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111544086.0A CN114275648A (en) | 2021-12-16 | 2021-12-16 | Elevator upper beam |
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| Publication Number | Publication Date |
|---|---|
| CN114275648A true CN114275648A (en) | 2022-04-05 |
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ID=80872758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111544086.0A Pending CN114275648A (en) | 2021-12-16 | 2021-12-16 | Elevator upper beam |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202729529U (en) * | 2012-07-08 | 2013-02-13 | 浙江飞亚电梯有限公司 | Elevator car roof device |
| CN203246988U (en) * | 2013-03-26 | 2013-10-23 | 天津市奥瑞克电梯有限公司 | Lift car traction system provided with two car roof rope return wheels |
| CN205602903U (en) * | 2016-03-30 | 2016-09-28 | 西继迅达（许昌）电梯有限公司 | Sedan -chair top diverting pulley mechanism |
| CN110980478A (en) * | 2019-12-30 | 2020-04-10 | 江苏阿尔法电梯制造有限公司 | Construction lifting system |
| CN210763791U (en) * | 2019-10-17 | 2020-06-16 | 湖北科力斯电梯有限公司 | Rear-mounted counterweight double-car top wheel structure for large net depth well of elevator |
| CN210825028U (en) * | 2019-11-19 | 2020-06-23 | 山西布劳恩电梯股份有限公司 | Cross car upper beam structure |
| CN214456046U (en) * | 2021-02-08 | 2021-10-22 | 恒达富士电梯有限公司 | Shock attenuation formula hanging device for elevator |
-
2021
- 2021-12-16 CN CN202111544086.0A patent/CN114275648A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202729529U (en) * | 2012-07-08 | 2013-02-13 | 浙江飞亚电梯有限公司 | Elevator car roof device |
| CN203246988U (en) * | 2013-03-26 | 2013-10-23 | 天津市奥瑞克电梯有限公司 | Lift car traction system provided with two car roof rope return wheels |
| CN205602903U (en) * | 2016-03-30 | 2016-09-28 | 西继迅达（许昌）电梯有限公司 | Sedan -chair top diverting pulley mechanism |
| CN210763791U (en) * | 2019-10-17 | 2020-06-16 | 湖北科力斯电梯有限公司 | Rear-mounted counterweight double-car top wheel structure for large net depth well of elevator |
| CN210825028U (en) * | 2019-11-19 | 2020-06-23 | 山西布劳恩电梯股份有限公司 | Cross car upper beam structure |
| CN110980478A (en) * | 2019-12-30 | 2020-04-10 | 江苏阿尔法电梯制造有限公司 | Construction lifting system |
| CN214456046U (en) * | 2021-02-08 | 2021-10-22 | 恒达富士电梯有限公司 | Shock attenuation formula hanging device for elevator |
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