Traction type vertical elevator steel wire rope guiding system

Abstract

The invention discloses a traction type vertical elevator steel wire rope guiding system which comprises a traction machine, a steel wire rope guiding device, a steel wire rope guiding device, a steel wire rope guiding device, a steel wire rope guiding device and a steel wire rope guiding device. The first car diversion sheave and the second car diversion sheave are axially arranged on the top surface of the elevator car at intervals; the counterweight diversion sheave is axially arranged on the top surface of the elevator counterweight block; and one end of the traction steel wire rope is fixed on the bearing beam, and the other end of the traction steel wire rope is fixed on the bearing beam after bypassing the counterweight diversion sheave, the traction sheave, the first car rope sending sheave and the second car rope sending sheave. The elevator guide system effectively solves the problem that an existing guide system is too large or insufficient in elevator traction force, the elevator operation quality is improved, and the elevator manufacturing cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of elevators, and in particular to a traction type vertical elevator wire rope guide system. Background Art

[0002] In order to solve the problem of traction force generated by the large distance between the center of the car and the center of the counterweight, the following methods are usually used to deal with it: (1) double-winding structure of wire rope; (2) single-winding structure of wire rope, increasing the vertical distance between the traction wheel and the guide wheel in the machine room to increase the wrap angle of the wire rope on the traction wheel; (3) single-winding structure of wire rope, the traction wheel adopts a groove shape with large traction force; (4) single-winding structure of wire rope, and superposition of scheme (2) and scheme (3).

[0003] When using solution (1), see Figure 1 , there are the following problems:

[0004] a) The elevator traction force is too large and the elevator cannot pass the stranded working condition. It is necessary to install an anti-loose rope switch to solve the problem;

[0005] b) With the double winding structure, the forces on the traction sheave 10 and the machine room guide wheel 20 are more than doubled compared with the single winding structure, and the main shaft, bearings and other components of the traction sheave 10 and the machine room guide wheel 20 need to be enlarged; the number of grooves on the traction sheave 10 and the machine room guide wheel 20 is doubled, and the traction sheave 10 and the guide wheel 20 need to be widened, which greatly increases the manufacturing cost of the traction machine and the machine room guide wheel;

[0006] c) As the equivalent number of traction wheels 10 and the equivalent number of machine room guide wheels 20 increase, the life of the wire rope 30 decreases.

[0007] When using solution (2), see Figure 2 , it is necessary to raise the traction machine base 10a and lengthen the machine room guide wheel bracket 20a, so that the vertical distance between the traction wheel 30a and the machine room guide wheel 40a is increased, thereby increasing the wrap angle of the traction wire rope 50a on the traction wheel 30a and increasing the traction force. If the distance between the center of the car and the center of the counterweight is large, the main machine base needs to be raised greatly, and the machine room guide wheel bracket needs to be extended very long, and the manufacturing cost of the main machine base and the guide wheel bracket increases; after the traction machine is raised, the stability of the traction machine fixation becomes worse, and maintenance is inconvenient.

[0008] When scheme (3) is adopted, the groove shape with large traction force will greatly reduce the life of the traction wire rope.

[0009] When solution (4) is adopted, the problems of solutions (2) and (3) will be improved, but they still exist.

[0010] Therefore, the applicant has found a solution to the above-mentioned problem through beneficial exploration and research, and the technical solution to be introduced below is produced in this context. Summary of the invention

[0011] The technical problem to be solved by the present invention is: to provide a traction type vertical elevator wire rope guide system in view of the deficiencies in the prior art, so as to solve the problem of excessive or insufficient elevator traction force in the existing guide system, improve the elevator operation quality, and reduce the elevator manufacturing cost.

[0012] The technical problem to be solved by the present invention can be achieved by adopting the following technical solutions:

[0013] A traction type vertical elevator wire rope guide system, comprising:

[0014] A traction machine, wherein the traction machine is mounted on the load-bearing beam and a traction sheave is mounted on the output shaft thereof;

[0015] The first and second car return rope pulleys, wherein the first and second car return rope pulleys have an interval shaft disposed on the top surface of the elevator car;

[0016] A counterweight anti-ropes pulley with its shaft disposed on the top surface of the elevator counterweight block; and

[0017] A traction steel wire rope, one end of which is fixed on the load-bearing beam, and the other end of which is fixed on the load-bearing beam after passing through the counterweight return rope pulley, the traction wheel and the first and second car sending rope pulleys.

[0018] In a preferred embodiment of the present invention, the traction machine is installed on the load-bearing beam through a traction machine base.

[0019] In a preferred embodiment of the present invention, the first and second car return pulleys are arranged symmetrically about the center line of the elevator car.

[0020] Due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0021] 1. Compared with the traditional wire rope rewinding structure, the present invention eliminates the machine room guide wheel assembly, the overall design becomes smaller, and the manufacturing cost of the traction machine base is reduced. At the same time, the problem of excessive traction force is solved, and the service life of the traction wire rope is prolonged;

[0022] 2. Compared with the traditional single-winding structure of the wire rope, the wrap angle of the traction wire rope on the traction wheel of the present invention reaches the maximum wrap angle of 180° of the single-winding structure, which solves the problem of insufficient traction force, and at the same time solves the problems of increased cost caused by increasing the height of the traction machine base and lengthening the guide wheel bracket in the machine room due to the increase in the wrap angle; compared with the solution of changing the groove shape, the service life of the wire rope is improved.

[0023] 3. The present invention makes the force of the entire elevator closer to the load-bearing wall, so the force is better. At the same time, the load-bearing beam can reduce the steel specifications, thereby reducing the manufacturing cost of the load-bearing beam.

[0024] 4. The present invention increases the weight of the elevator car by adding a car anti-roping pulley on the top surface of the elevator car, which is beneficial to improving the traction force of the elevator; if the empty weight of the elevator car is guaranteed to remain unchanged, the counterweight weight of the elevator car can be reduced, thereby reducing the cost of the elevator;

[0025] 5. Compared with a single car return pulley, the elevator car of the present invention adopts a car return pulley, and the force on a single car return pulley of the two car return pulleys is reduced, and the main shaft, bearings and other components of the car return pulley can be reduced in specifications, thereby reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 It is a schematic diagram of the installation of an existing traction wire rope guide system (the traction wire rope adopts a double-winding structure).

[0028] Figure 2 It is a schematic diagram of the installation of an existing traction wire rope guide system (the traction wire rope adopts a single-winding structure).

[0029] Figure 3 It is a structural schematic diagram of the present invention. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below with reference to specific diagrams.

[0031] See also Figure 3 , the figure shows a traction type vertical elevator wire rope guide system, including a traction machine 100, a car return rope pulley 200a, 200b, a counterweight return rope pulley 300 and a traction wire rope 400.

[0032] The traction machine 100 is installed on the load-bearing beam 10 via a traction machine base 110 , and a traction sheave 120 is installed on the output shaft thereof. The traction machine 100 drives the traction sheave 120 to rotate via the output shaft.

[0033] The car return pulleys 200a, 200b are arranged on the top surface of the elevator car 20 with a spacing axis. The car return pulleys 200a, 200b are arranged symmetrically with respect to the center line of the elevator car 20, so that the force is more uniform.

[0034] The counterweight anti-ropes pulley 300 is axially arranged on the top surface of the elevator counterweight block 30 .

[0035] One end of the traction wire rope 400 is fixed on the load-bearing beam 10, and the other end thereof is fixed on the load-bearing beam 10 after passing through the counterweight return rope pulley 300, the traction pulley 120 and the car return rope pulleys 200a and 200b.

[0036] Compared with the traditional guide system, the traction type vertical elevator wire rope guide system of the present invention has the following advantages:

[0037] 1) The guide wheel assembly in the machine room has been cancelled

[0038] a) The traction machine base does not need to be designed with a locking machine room guide wheel assembly, the overall design becomes smaller, and the manufacturing cost of the traction machine base is reduced;

[0039] b) The installation position of the traction machine 100 is closer to the load-bearing wall, and the load-bearing beam 10 is better;

[0040] c) The load-bearing beam 10 can reduce the steel specifications and reduce the manufacturing cost of the load-bearing beam;

[0041] 2) Add a car return pulley on the top surface of the elevator car 20

[0042] a) Increasing the weight of the elevator car 20 is beneficial to improving the traction force of the elevator; if the empty weight of the elevator car 20 is guaranteed to remain unchanged, the counterweight weight of the elevator car 20 can be reduced, thereby reducing the cost of the elevator;

[0043] b) The traction wire rope 400 termination device on the elevator car 20 side is closer to the load-bearing wall, and the load-bearing beam 10 is better in terms of force;

[0044] c) The load-bearing beam 10 can reduce the steel specifications and reduce the manufacturing cost of the load-bearing beam;

[0045] d) Compared with a single car return pulley, the elevator car 20 adopts a car return pulley. The force on a single car return pulley of the two car return pulleys is reduced, and the main shaft, bearings and other components of the car return pulley can be reduced in specifications, thereby reducing costs.

[0046] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A traction type vertical elevator wire rope guide system, characterized in that: include: A traction machine, wherein the traction machine is mounted on the load-bearing beam and a traction sheave is mounted on the output shaft thereof; The first and second car return rope pulleys, wherein the first and second car return rope pulleys have an interval shaft disposed on the top surface of the elevator car; A counterweight anti-ropes pulley with its shaft arranged on the top surface of the elevator counterweight block; as well as A traction steel wire rope, one end of which is fixed on the load-bearing beam, and the other end of which is fixed on the load-bearing beam after passing through the counterweight return rope pulley, the traction wheel and the first and second car sending rope pulleys.

2. The traction type vertical elevator wire rope guide system according to claim 1, characterized in that: The traction machine is installed on the load-bearing beam through a traction machine base.

3. The traction type vertical elevator wire rope guide system according to claim 1, characterized in that: The first and second car return pulleys are arranged symmetrically with respect to the center line of the elevator car.

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