Reform transform elevator
Technical Field
The utility model relates to the field of elevators, in particular to a modified elevator.
Background
After the elevator is used for a long time, the old elevator is required to be updated in order to ensure the safety and the conveying performance of people when the elevator is taken because the elevator is old. Such as a 1:1 old elevator being changed to a 2:1 new elevator, it is generally necessary to disassemble the existing elevator components.
In view of the equipment cost, the existing 1:1 old elevator is modified, and a new elevator with reserved guide rails, guide rail brackets and other parts updated to 2:1 is generally adopted. As shown in fig. 4 and 5, which are schematic diagrams of the arrangement of the 1:1 elevator, and fig. 6 and 7, which are schematic diagrams of the arrangement of the 2:1 elevator. Because the arrangement scheme and structure of the 1:1 elevator and the 2:1 elevator are greatly different, the conventional thinking is to dismount the original machine room spandrel girder and to re-layout. As shown in fig. 8 and 9, a schematic diagram of a conventional 1:1 old elevator modified 2:1 elevator arrangement is shown. Therefore, the original civil structure must be destroyed, the construction process is difficult, a great amount of dust pollution and noise pollution can be brought, the original building is required to be subjected to secondary decoration, the construction period is long, and the normal life of residents can be seriously disturbed. Thus, further improvements can be made.
Disclosure of Invention
In order to solve the problems in the background art, the utility model provides a modified elevator.
The improved elevator comprises an elevator shaft and an elevator car, wherein an elevator machine room is arranged in the elevator shaft, first guide rail brackets are fixedly arranged on the left side wall and the right side wall of the elevator shaft, an elevator car guide rail is fixedly arranged at the other end of each first guide rail bracket, the elevator car is slidably connected to the elevator car guide rail, two groups of second guide rail brackets are fixedly arranged on the rear side wall of the elevator shaft, counterweight guide rails are fixedly arranged on the opposite sides of the two groups of second guide rail brackets, a counterweight body is slidably connected between the two groups of counterweight guide rails, a first rope return wheel is arranged at the top of the elevator car, two groups of second rope return wheels are arranged at the top of the counterweight body, and traction assemblies are connected to the first rope return wheels and the second rope return wheels.
The traction assembly comprises a first rope head beam, two groups of second rope head beams, a traction wheel, a guide wheel and a first steel wire rope, wherein the first rope head beam is fixedly installed on the inner wall of an elevator machine room, the first rope head beam is located right above a car, the two groups of second rope head beams are fixedly installed on the inner wall of the elevator machine room, the two groups of second rope head beams are located right above a counterweight body, the traction wheel and the guide wheel are installed on the inner wall of the elevator machine room, the traction wheel and the guide wheel are located right above the car and between the counterweight body, the guide wheel is located at the rear lower side of the traction wheel, one end of the first steel wire rope is fixedly installed at the bottom of the first rope head beam, the first rope head beam is wound around the lower surface of a first rope return wheel, the first rope head beam is wound around the traction wheel, the first rope head beam is finally attached to the right side of the guide wheel, the other end of the first steel wire rope is fixedly installed with two groups of second steel wire ropes, the two groups of second steel wire ropes extend downwards from the space between the two groups of second rope return wheels, the two groups of second rope ropes are wound around the lower surfaces of the two groups of second rope return sheaves, the two groups of the second rope ropes are fixedly installed at the bottom of the center of the traction wheel respectively.
Based on the above, three first rope passing holes and two second rope passing holes are formed in the ground of the machine room of the elevator shaft, two groups of the second rope passing holes are used for allowing the first steel wire ropes to pass through, and three first rope passing holes are used for allowing the two groups of the second steel wire ropes to pass through.
Based on the above, the two groups of second rope return wheels are bilaterally symmetrical about the center of the counterweight body.
Based on the above, two sets of spandrel girders distributed left and right are fixedly arranged on the inner wall of the elevator machine room, the first rope head girders, the two sets of second rope head girders, the guide wheels and the traction machine are all arranged on the two sets of spandrel girders, and the first rope head girders, the two sets of second rope head girders, the guide wheels and the traction machine are fixedly arranged on the inner wall of the elevator machine room through the spandrel girders.
Based on the above, the first sheave is located at the center of the top of the car.
Compared with the prior art, the utility model has the substantial characteristics and progress, in particular, the utility model has the advantages that the first rope returning wheels are arranged at the top of the lift car, the second rope returning wheels are arranged at the top of the counterweight body, the two first rope passing holes and the two second rope passing holes are cut, the work of changing the 1:1 lift into the 2:1 lift can be completed, the original building civil structure is protected to the greatest extent, the original stress structure is not changed, the destructive construction of the original building is hardly caused, the installation design period is short, the construction is convenient and quick, the construction period is short, the project construction cost is effectively reduced, the generation of building rubbish is hardly caused, the dust pollution and the noise pollution are not caused to the environment, and the construction process is not disturbed by people.
Drawings
Fig. 1 is a schematic illustration of the elevator hoistway layout of the present utility model.
Fig. 2 is a schematic diagram of a machine room layout of the present utility model.
Fig. 3 is a schematic structural view of the traction assembly of the present utility model.
Fig. 4 is a schematic representation of a hoistway plan layout for a prior art 1:1 elevator.
Fig. 5 is a schematic diagram of a machine room layout of a prior art 1:1 elevator.
Fig. 6 is a schematic representation of a hoistway plan layout for a 2:1 elevator of the prior art.
Fig. 7 is a schematic diagram of a machine room layout of a prior art 2:1 elevator.
Fig. 8 is a schematic diagram of a hoistway layout with a 1:1 elevator modified to a 2:1 elevator in the prior art.
Fig. 9 is a schematic diagram of a machine room layout of a 1:1 elevator modified to a 2:1 elevator in the prior art.
The reference numerals indicate 100, an elevator shaft, 200, a car, 300, a first guide rail bracket, 400, a car guide rail, 500, a second guide rail bracket, 600, a counterweight guide rail, 700, a counterweight body, 800, a traction assembly, 900, a first rope passing hole, 1000, a second rope passing hole, 1100, a spandrel girder, 201, a first rope return wheel, 701 and a second rope return wheel;
801. First rope head beam, 802, second rope head beam, 803, traction sheave, 804, guide sheave, 805, first wire rope, 806, second wire rope, 807, traction machine.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1 to 3, a modified elevator comprises an elevator shaft 100 and a car 200, wherein an elevator machine room is arranged in the elevator shaft, first guide rail brackets 300 are fixedly arranged on the left side wall and the right side wall of the elevator shaft 100, a car guide rail 400 is fixedly arranged at the other end of the first guide rail brackets 300, the car 200 is slidably connected to the car guide rail 400, and the car 200 is guided by the car guide rail 400. Two groups of second guide rail brackets 500 are fixedly arranged on the rear side wall of the elevator shaft 100, counterweight guide rails 600 are fixedly arranged on the opposite sides of the two groups of second guide rail brackets 500, a counterweight body 700 is connected between the two counterweight guide rails 600 in a sliding manner, and the counterweight body 700 is guided by the counterweight guide rails 600.
A first sheave 201 is provided on the top of the car 200, the first sheave 201 being located at the center of the top of the car 200. Two groups of second rope return sheaves 701 are arranged at the top of the counterweight body 700, and the two groups of second rope return sheaves 701 are bilaterally symmetrical with respect to the center of the counterweight body 700. The traction assembly 800 is connected to the first and second return sheaves 201 and 701. The first guide rail bracket 300, the car guide rail 400, the second guide rail bracket 500, and the counterweight guide rail 600 are components reserved for the original 1:1 old elevator.
When in use, the traction assembly 800 comprises a first rope head beam 801, two groups of second rope head beams 802, a traction sheave 803, a guide wheel 804 and a first steel wire rope 805, wherein the first rope head beam 801 is fixedly arranged on the inner wall of an elevator machine room, the first rope head beam 801 is positioned right above the car 200, the two groups of second rope head beams 802 are fixedly arranged on the inner wall of the elevator machine room, and the two groups of second rope head beams 802 are positioned right above the counterweight body 700.
A traction sheave 803 and a guide sheave 804 are mounted on the inner wall of the elevator machine room, and a traction machine 807 is fixedly mounted at the center of the traction sheave 803. The inner wall of the elevator machine room is fixedly provided with two groups of spandrel girders 1100 which are distributed left and right, a first rope hitch girder 801, two groups of second rope hitch girders 802, guide wheels 804 and a traction machine 807 are arranged on the two groups of spandrel girders 1100, and the first rope hitch girder 801, the two groups of second rope hitch girders 802, the guide wheels 804 and the traction machine 807 are fixedly arranged on the inner wall of the elevator machine room through the spandrel girders 1100. The first rope head beam 801 is fixedly arranged between the two groups of spandrel girders 1100, the two groups of second rope head beams 802 are respectively arranged on the two groups of spandrel girders 1100, the traction machine 807 is arranged on the spandrel girder 1100 on the left side, the guide wheel 804 is arranged on the spandrel girder 1100 on the right side, and the spandrel girder 1100 on the left side is the spandrel girder 1100 of the original 1:1 old elevator.
And the traction sheave 803 and the guide sheave 804 are located right above between the car 200 and the counterweight body 700, and the guide sheave 804 is located at the rear lower side of the traction sheave 803. One end of the first steel wire rope 805 is fixedly arranged at the bottom of the first rope head beam 801, the first steel wire rope is wound around the lower surface of the first rope return wheel 201, then wound around the traction wheel 803, finally attached to the right side of the guide wheel 804, two groups of second steel wire ropes 806 are fixedly arranged at the other end of the first steel wire rope 805, the two groups of second steel wire ropes 806 extend downwards from between the two groups of second rope return wheels 701 and are wound around the lower surface of the two groups of second rope return wheels 701, and the other ends of the two groups of second steel wire ropes 806 are respectively and fixedly arranged at the bottoms of the two groups of second rope head beams 802. Thereby completing the installation of the first wire rope 805 and the second wire rope 806.
Three first rope passing holes 900 and two second rope passing holes 1000 are formed in the machine room floor of the elevator shaft 100, two groups of second rope passing holes 1000 are used for the first steel wire ropes 805 to pass through, and three first rope passing holes 900 are used for two groups of second steel wire ropes 806 to pass through. For avoidance of the first 805 and second 806 wire ropes. In addition, the middle first rope passing hole 900 is the original hole of the original 1:1 old elevator.
Therefore, when the old 1:1 elevator is changed into the old 2:1 elevator, only one group of first rope return wheels 201 and two groups of second rope return wheels 701 are added, and two groups of second rope passing holes 1000 and two groups of first rope passing holes 900 are cut. Therefore, the civil engineering structure of the original building can be protected to the greatest extent from being damaged.
In the prior art, as shown in fig. 4-9, comparing the shaft plane layout diagrams of fig. 4 and 6, it is found that the counterweight center (vertical direction) and the car center (vertical direction) of the 1:1 elevator are completely coincident, and the counterweight center (vertical direction) and the car center (vertical direction) of the 2:1 elevator are offset by a distance p=d1/2 (i.e. half the counterweight sheave diameter);
Comparing the schematic plan layout of the machine room in fig. 5 and fig. 7, it is found that:
The 2:1 elevator machine room layout is much more complex than the 1:1 machine room layout, the wheel (car return sheave, traction sheave, guide sheave) center line in fig. 7 coincides with the car center line and is tangential to the counterweight return sheave outer circle, combined with fig. 6 it can be seen that the wheel (car top return sheave, traction sheave, guide sheave) center line (i.e. the left/right spandrel layout center line in fig. 4) is also offset D1/2 from the counterweight wheel center (i.e. half counterweight return sheave diameter), while the left/right spandrel layout center line of the 1:1 elevator is fully coincident with the counterweight center, and the 2:1 elevator machine room layout is much more than the 1:1 machine room layout by car rope head beams and counterweight rope head beams.
According to the above, the machine room is needed for the 1:1 elevator to be modified into a 2:1 elevator:
a. Cutting a hole for installing the counterweight rope head beam;
b. Removing the original spandrel girder, and re-cutting holes for installing the left/right spandrel girder according to the arrangement of a 2:1 machine room;
Fig. 8-9 are schematic diagrams of a conventional 1:1 old elevator arrangement with guide rails, guide rail brackets, etc. updated to a 2:1 elevator.
According to the scheme, the car guide rail and the counterweight guide rail are not dismantled, an original arrangement structure (1:1 structure, the center of the car and the center of the counterweight are completely overlapped), a rope return wheel is added on the upper parts of the car and the counterweight by modifying the original 2:1 structure, the excircle of the counterweight rope return wheel at the moment cannot be overlapped with the central line of a wheel (a car top rope return wheel, a traction wheel and a guide wheel), but in order to ensure normal traction conditions, at least the guide wheel and the traction wheel are required to be adjusted, meanwhile, the left/right bearing beams are obliquely arranged, and the inclination angle is usually 8-10 degrees.
When a designer designs a specific scheme, a great amount of nonstandard design is needed, the design difficulty is increased, in addition, the original spandrel girder is required to be removed, holes are drilled again, the spandrel girder is rearranged, a great amount of dust pollution and noise pollution are brought, the original spandrel girder is insufficient in length due to the inclined arrangement, and a new spandrel girder is required to be distributed, so that the equipment cost is increased to a certain extent. For installation construction, the paying-off positioning difficulty is high, the installation precision is reduced to a certain extent, and the later-stage operation effect is also adversely affected. And the re-drilled holes are required to be backfilled and subjected to secondary decoration, so that the construction period is long, and the normal life of residents is seriously disturbed.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.