Large machine room elevator with 7: 1 hanging

Abstract

The utility model provides a large-machine-room elevator with a 7: 1 hanging function. The large-machine-room elevator comprises a traction system, a lift car and a counterweight, wherein the lift car and the counterweight are connected with the traction system. The traction system comprises a driving main machine, a traction wheel, a guide wheel, three lift car diversion sheave sets, three counterweight diversion sheaves and a traction steel wire rope. Each of the three car diversion sheave sets comprises two car diversion sheaves, the top of the car is provided with three car roof wheel sets and a car rope hitch plate, each of the three car roof wheel sets comprises two car roof wheels, and the top of the counterweight is provided with three counterweight wheels and a counterweight rope hitch plate; one end of the traction steel wire rope is fixed on the lift car rope hitch plate; the other end of the traction steel wire rope sequentially bypasses a first car diversion sheave group, a first car roof sheave group, a second car diversion sheave group, a second car roof sheave group, a third car diversion sheave group, a third car roof sheave group, a traction sheave, a guide wheel, a first counterweight wheel, a first counterweight diversion sheave, a second counterweight wheel and a second counterweight diversion sheave; and the third counterweight wheel and the third counterweight diversion sheave are fixed on the counterweight rope hitch plate.

Description

Technical Field

[0001] The utility model belongs to the technical field of elevators, and in particular relates to a large machine room elevator with a 7:1 suspension ratio. Background Art

[0002] In the technical solutions disclosed in the existing large machine room elevators, a traction ratio of 6:1 or 8:1 is generally used to configure the elevator. However, an elevator configured with a 6:1 hanging ratio will result in a high load on the traction wire rope and the wheel axle, limiting the increase in the elevator load. An elevator configured with an 8:1 hanging ratio has a large number of sheaves and a high wheel speed. After long-term use of the elevator sheave, friction and wear may cause problems such as uneven surface and reduced diameter, thereby affecting the smooth operation and safety of the elevator. In addition, the high-speed rotation of the 8:1 hanging ratio anti-ropes and traction sheaves will cause greater noise, which is not conducive to increasing the elevator speed. Utility Model Content

[0003] The utility model aims to provide a large machine room elevator with a 7:1 suspension ratio, which can take into account the advantages of moderate speed operation and large load capacity.

[0004] The utility model is realized through the following technical solutions:

[0005] A 7:1 suspended large machine room elevator, comprising a traction system arranged in the machine room and a car and a counterweight arranged in the hoistway; the car and the counterweight are respectively connected to the traction system, and the traction system comprises a driving main machine, a traction wheel, a guide wheel, a first car return rope pulley group, a second car return rope pulley group, a third car return rope pulley group, a first counterweight return rope pulley, a second counterweight return rope pulley, a third counterweight return rope pulley and a traction wire rope;

[0006] The driving main unit is connected to the traction wheel driving, the first car return rope wheel group, the second car return rope wheel group and the third car return rope wheel group each include two car return rope wheels, the top of the car is provided with a first car top wheel group, a second car top wheel group, a third car top wheel group and a car rope head plate, the first car top wheel group, the second car top wheel group and the third car top wheel group each include two car top wheels, and the top of the counterweight is provided with a first counterweight wheel, a second counterweight wheel, a third counterweight wheel and a counterweight rope head plate;

[0007] One end of the traction wire rope is fixed on the car rope head plate, and the other end of the traction wire rope is passed through the first car return rope pulley group, the first car top wheel group, the second car return rope pulley group, the second car top wheel group, the third car return rope pulley group, the third car top wheel group, the traction wheel, the guide wheel, the first counterweight wheel, the first counterweight return rope pulley, the second counterweight wheel, the second counterweight return rope pulley, the third counterweight wheel and the third counterweight return rope pulley in sequence and then fixed on the counterweight rope head plate.

[0008] Furthermore, the traction system also includes a machine shelf beam, a counterweight return pulley support beam, a first car return pulley mounting beam, a second car return pulley mounting beam and a third car return pulley mounting beam installed in the machine room, the traction wheel and the guide wheel are installed on the machine shelf beam, the first counterweight return pulley, the second counterweight return pulley and the third counterweight return pulley are installed on the counterweight return pulley support beam, the first car return pulley group is installed on the first car return pulley mounting beam, the second car return pulley group is installed on the second car return pulley mounting beam, and the third car return pulley group is installed on the third car return pulley mounting beam.

[0009] Furthermore, the traction system also includes a first car anti-ropes support beam and a second car anti-ropes support beam, the counterweight anti-ropes support beam, the first car anti-ropes support beam and the second car anti-ropes support beam are arranged on one side of the machine shelf beam, and the counterweight anti-ropes support beam is perpendicular to the machine shelf beam, the first car anti-ropes support beam and the second car anti-ropes support beam are parallel to the machine shelf beam respectively, the two ends of the first car anti-ropes mounting beam and the second car anti-ropes mounting beam are respectively arranged on the first car anti-ropes support beam and the second car anti-ropes support beam, and the two ends of the third car anti-ropes mounting beam are respectively arranged on the machine shelf beam and the second car anti-ropes support beam.

[0010] Furthermore, the first car top wheel group, the second car top wheel group and the third car top wheel group are uniformly arranged at the front end, the middle end and the rear end of the car top in sequence.

[0011] Furthermore, the traction system also includes a counterweight guide rail and a car guide rail, the counterweight is installed on the counterweight guide rail, and the car is installed on the car guide rail.

[0012] Furthermore, the counterweight is arranged on the side of the car.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: a new traction ratio and traction system layout are adopted, and a 7:1 hanging ratio is achieved by arranging the car rope head plate on the top of the car and the counterweight rope head plate on the counterweight. Compared with the existing large machine room elevator with a 6:1 hanging ratio, the elevator operating load can be increased by more than 20% when the traction wheel linear speed is the same. Compared with the existing large machine room elevator with a 8:1 hanging ratio, the traction wire rope and the return rope wheel shaft load are reduced by more than 15% when the load is the same, so that the elevator can take into account the two advantages of moderate operating speed and large load, and has better performance in meeting high-speed and heavy-load requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of a large machine room elevator with a 7:1 suspension ratio according to the utility model;

[0015] Figure 2 It is a schematic diagram of the traction wire rope winding of the large machine room elevator with a 7:1 suspension according to the utility model;

[0016] Figure 3 This is the machine room plan of the large machine room elevator with a 7:1 suspension ratio of the utility model;

[0017] Figure 4 This is a plan view of the hoistway of a large machine room elevator with a 7:1 suspension ratio according to the utility model.

[0018] In the figure, 1-machine room, 2-car, 3-counterweight, 4-driving main engine, 5-traction wheel, 6-guide wheel, 7-first car return rope pulley group, 8-second car return rope pulley group, 9-third car return rope pulley group, 10-first counterweight return rope pulley, 11-second counterweight return rope pulley, 12-third counterweight return rope pulley, 13-traction wire rope, 14-first car top wheel group, 15-second car top wheel group, 16-third car top wheel group, 17-car rope head Plate, 18-first counterweight pulley, 19-second counterweight pulley, 20-third counterweight pulley, 21-counterweight rope head plate, 22-machine shelf beam, 23-counterweight return rope pulley support beam, 24-first car return rope pulley mounting beam, 25-second car return rope pulley mounting beam, 26-third car return rope pulley mounting beam, 27-first car return rope pulley support beam, 28-second car return rope pulley support beam, 29-counterweight guide rail, 30-car guide rail, 31-hoistway. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of the present utility model, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0022] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0023] In the description of the present utility model, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model.

[0024] See also Figures 1 to 4 , Figure 1 This is a structural diagram of a large machine room elevator with a 7:1 suspension ratio according to the utility model. Figure 2 This is a schematic diagram of the traction wire rope winding of the large machine room elevator with a 7:1 suspension ratio of the utility model. Figure 3 This is the machine room plan of the utility model's 7:1 hanging large machine room elevator. Figure 4The hoistway plan of the large machine room elevator with a ratio of 7 to 1 suspension of the utility model. A large machine room elevator with a ratio of 7 to 1 suspension includes a traction system arranged in the machine room 1 and a car 2 and a counterweight 3 arranged in the hoistway 31; the car 2 and the counterweight 3 are respectively connected to the traction system, and the traction system includes a driving main unit 4, a traction wheel 5, a guide wheel 6, a first car return rope pulley group 7, a second car return rope pulley group 8, a third car return rope pulley group 9, a first counterweight return rope pulley 10, a second counterweight return rope pulley 11, a third counterweight return rope pulley 12 and a traction wire rope 13; the driving main unit 4 is drivingly connected to the traction wheel 5, the first car return rope pulley group 7, the second car return rope pulley group 8 and the third car return rope pulley group 9 each include two car return rope pulleys, and the top of the car 2 is provided with a first car top wheel group 14, a second car top wheel group 15, a third car top wheel group 16 and a car rope head Plate 17, the first car top wheel group 14, the second car top wheel group 15 and the third car top wheel group 16 each include two car top wheels, and the top of the counterweight 3 is provided with a first counterweight wheel 18, a second counterweight wheel 19, a third counterweight wheel 20 and a counterweight rope head plate 21; one end of the traction wire rope 13 is fixed on the car rope head plate 17, and the other end of the traction wire rope 13 is fixed on the counterweight rope head plate 21 after passing through the first car return rope wheel group 7, the first car top wheel group 14, the second car return rope wheel group 8, the second car top wheel group 15, the third car return rope wheel group 9, the third car top wheel group 16, the traction wheel 5, the guide wheel 6, the first counterweight wheel 18, the first counterweight return rope wheel 10, the second counterweight wheel 19, the second counterweight return rope wheel 11, the third counterweight wheel 20 and the third counterweight return rope wheel 12 in sequence.

[0025] The utility model arranges the car rope head plate 17 on the top of the car 2 and arranges the counterweight rope head plate 21 on the counterweight 3, thereby realizing the configuration of the elevator traction system by adopting a 7:1 hanging ratio. Compared with the existing large machine room 1 elevator with a hanging ratio of 6:1, when the linear speed of the traction wheel 5 is the same, the elevator running load can be increased by more than 20%. Compared with the existing large machine room 1 elevator with a hanging ratio of 8:1, when the load is the same, the load of the traction wire rope 13 and the anti-ropes wheel shaft is reduced by more than 15%, so that the elevator can take into account both the advantages of moderate running speed and large load, and has better performance in meeting the requirements of high speed and heavy load.

[0026] In one embodiment, the traction system further comprises a machine shelf beam 22, a counterweight return pulley support beam 23, a first car return pulley mounting beam 24, a second car return pulley mounting beam 25 and a third car return pulley mounting beam 26 installed in the machine room 1, the traction wheel 5 and the guide wheel 6 are installed on the machine shelf beam 22, the first counterweight return pulley 10, the second counterweight return pulley 11 and the third counterweight return pulley 12 are installed on the counterweight return pulley support beam 23, the first car return pulley group 7 is installed on the first car return pulley mounting beam 24, the second car return pulley group 8 is installed on the second car return pulley mounting beam 25, and the third car return pulley group 9 is installed on the third car return pulley mounting beam 26. This arrangement facilitates the arrangement of three car 2 return pulley groups and three counterweight 3 return pulleys, and the traction wheel 5 and the guide wheel 6 are used in conjunction with each other to meet the spacing between the car 2 and the counterweight 3.

[0027] In one embodiment, the traction system also includes a first car anti-ropes support beam 27 and a second car anti-ropes support beam 28, the counterweight anti-ropes support beam 23, the first car anti-ropes support beam 27 and the second car anti-ropes support beam 28 are arranged on one side of the rack beam 22, and the counterweight anti-ropes support beam 23 is perpendicular to the rack beam 22, the first car anti-ropes support beam 27 and the second car anti-ropes support beam 28 are respectively parallel to the rack beam 22, the second car anti-ropes support beam 28 is located between the first car anti-ropes support beam 27 and the rack beam 22, the first car anti-ropes mounting beam 24 and the second car anti-ropes mounting beam 25 are respectively arranged on the first car anti-ropes support beam 27 and the second car anti-ropes support beam 28, and the third car anti-ropes mounting beam 26 is respectively arranged on the rack beam 22 and the second car anti-ropes support beam 28. This arrangement facilitates the arrangement of the first car return pulley group 7, the second car return pulley group 8 and the third car return pulley group 9.

[0028] In one embodiment, the first car top wheel group 14, the second car top wheel group 15, and the third car top wheel group 16 are evenly arranged at the front end, middle end, and rear end of the top of the car 2. This arrangement allows the top of the car top to be evenly stressed. Further, two car top wheels in the first car top wheel group 14, the second car top wheel group 15, and the third car top wheel group 16 are arranged at intervals.

[0029] In one embodiment, the traction system further includes a counterweight guide rail 29 and a car guide rail 30, the counterweight 3 is mounted on the counterweight guide rail 29, and the car 2 is mounted on the car guide rail 30. The counterweight guide rail 29 and the car guide rail 30 are installed in the hoistway 31 to limit the moving direction of the counterweight 3 and the car 2 in the hoistway 31.

[0030] In one embodiment, the counterweight 3 is disposed on the side of the car 2. It should be noted that the positional relationship of the counterweight 3 can be adjusted according to different actual occasions, and the positional relationship of the counterweight 3 is not limited here.

[0031] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Therefore, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A 7:1 suspension large machine room elevator, comprising a traction system arranged in a machine room and a car and a counterweight arranged in a hoistway; the car and the counterweight are respectively connected to the traction system, characterized in that: The traction system comprises a driving main machine, a traction wheel, a guide wheel, a first car return rope pulley group, a second car return rope pulley group, a third car return rope pulley group, a first counterweight return rope pulley, a second counterweight return rope pulley, a third counterweight return rope pulley and a traction wire rope; The driving main unit is connected to the traction wheel driving, the first car return rope pulley group, the second car return rope pulley group and the third car return rope pulley group each include two car return rope pulleys, the top of the car is provided with a first car top wheel group, a second car top wheel group, a third car top wheel group and a car rope head plate, the first car top wheel group, the second car top wheel group and the third car top wheel group each include two car top wheels, the top of the counterweight is provided with a first counterweight wheel, a second counterweight wheel, a third counterweight wheel and a counterweight rope head plate; One end of the traction wire rope is fixed on the car rope head plate, and the other end of the traction wire rope is fixed on the counterweight rope head plate after passing through the first car return rope pulley group, the first car top wheel group, the second car return rope pulley group, the second car top wheel group, the third car return rope pulley group, the third car top wheel group, the traction wheel, the guide wheel, the first counterweight wheel, the first counterweight return rope pulley, the second counterweight wheel, the second counterweight return rope pulley, the third counterweight wheel and the third counterweight return rope pulley in sequence.

2. The 7:1 suspension large machine room elevator according to claim 1, characterized in that: The traction system also includes a machine shelf beam, a counterweight return pulley support beam, a first car return pulley mounting beam, a second car return pulley mounting beam and a third car return pulley mounting beam installed in the machine room, the traction wheel and the guide wheel are installed on the machine shelf beam, the first counterweight return pulley, the second counterweight return pulley and the third counterweight return pulley are installed on the counterweight return pulley support beam, the first car return pulley group is installed on the first car return pulley mounting beam, the second car return pulley group is installed on the second car return pulley mounting beam, and the third car return pulley group is installed on the third car return pulley mounting beam.

3. The 7:1 suspension large machine room elevator according to claim 2, characterized in that: The traction system also includes a first car anti-ropes support beam and a second car anti-ropes support beam, the counterweight anti-ropes support beam, the first car anti-ropes support beam and the second car anti-ropes support beam are arranged on one side of the machine shelf beam, and the counterweight anti-ropes support beam is perpendicular to the machine shelf beam, the first car anti-ropes support beam and the second car anti-ropes support beam are parallel to the machine shelf beam respectively, the first car anti-ropes mounting beam and the second car anti-ropes mounting beam have two ends respectively arranged on the first car anti-ropes support beam and the second car anti-ropes support beam, and the third car anti-ropes mounting beam has two ends respectively arranged on the machine shelf beam and the second car anti-ropes support beam.

4. The 7:1 suspension large machine room elevator according to claim 1, characterized in that: The first car top wheel group, the second car top wheel group and the third car top wheel group are evenly arranged at the front end, the middle end and the rear end of the car top in sequence.

5. The 7:1 suspension large machine room elevator according to claim 1, characterized in that: The traction system further comprises a counterweight guide rail and a car guide rail, the counterweight is mounted on the counterweight guide rail, and the car is mounted on the car guide rail.

6. The 7:1 suspension large machine room elevator according to claim 1, characterized in that: The counterweight is arranged on the side of the car.

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