WO2015021839A1 - Three nodal point pressure-equalising device of steel rope sets for elevator - Google Patents

Abstract

Disclosed is a three nodal point pressure-equalising device of steel rope sets for an elevator, wherein a two nodal point pressure-equalising assembly (2) and a first spherical nodal point (9) can respectively rotate around a balancing seat (1); the balancing seat (1) can rotate around a base seat (3); each second spherical nodal point (26) can rotate around the two nodal point pressure-equalising assembly (2), while the rotational centre of the two nodal point pressure-equalising assembly (2) is on the same horizontal plane as the rotational centre of the two second spherical nodal points (26) provided thereon, and is collinear; the rotational centres of the two nodal point pressure-equalising assembly (2), the balancing seat (1) and the first spherical nodal point (9) are on the same horizontal plane and are collinear; the distance from the rotational centre of the two nodal point pressure-equalising assembly (2) to the rotational centre of the balancing seat (1) is half the distance of the first spherical nodal point (9) to the rotational centre of the balancing seat (1). The device can adjust the pressure sustained by three sets of steel ropes, and when a stable state is reached, the pressure sustained by each set of steel ropes will be the same, thereby enabling the damage caused by unequal pressure sustained by steel ropes for an elevator to be overcome.

Description

 Three-node uniform force device for steel rope group for elevator

Technical field

 The invention relates to an improvement of a equalizing device for a steel wire rope set for an elevator, in particular to a three-node of an elevator wire rope group capable of adjusting the force of three sets of steel wire ropes and achieving the same force of each set of steel wire ropes Force device.

Background technique

At present, elevators at home and abroad usually use a traction machine to drive the elevator. The traction elevator suspension lifting system is composed of main components such as a traction sheave, a wire rope set, a car, a balance block system, and the wire rope set in the traction elevator suspension lifting system. The friction generated by each wire rope wound in the groove of the traction sheave provides the power for the car to lift or descend; under the continuous development of the elevator drive technology, the lift height and the running speed of the elevator have a great Improvement, but also put forward higher requirements for the safety and reliability of the elevator itself. In theory, during the use of the elevator, the force of each wire rope in the wire rope set should be the same, and the shape and size of the groove used to wind the wire rope on the traction sheave should also be reasonable; but in actual use, due to For some reasons, the force of each wire rope in the wire rope group is different. This will cause some copper wire ropes to be stressed, and some wire ropes have small force; the wire rope with strong force and the groove on the corresponding traction wheel The friction between them will be relatively large, which will cause the friction of the groove on the corresponding traction sheave to be more severe. For a long time, the shape and size of the groove on the corresponding traction sheave will change. The force involved in the work of the wire rope causing the force is getting larger and larger. If the groove on the traction sheave is worn, the radius is reduced by 0.1 mm. For each rotation of the traction sheave, the wire rope should be less moved to 0. 314 mm. In the case of a 20-story building, the traction sheave is rotated about 100 圏. , then the steel rope should be less moving 31. 4 mm, after testing, it was found that the wire rope should be subjected to a force of about 3000 cattle; when the wire rope is in a wire rope When the force is uneven, the creeping phenomenon occurs between the wire rope and the traction sheave with small force. The creep between the wire rope and the traction sheave will wear the wire rope and the traction bow 1 wheel; the higher the floor, the more serious the above situation . Therefore, the long-term use of the heavy-duty steel wire rope is easy to break during use, resulting in an elevator safety accident; at the same time, the wire rope with small force will be damaged due to the wear of the traction sheave, if the damage is serious , it will also cause the wire rope to break and cause the elevator safety accident; for this reason, we have developed a wire rope group for elevators that can adjust the force of the three sets of wire ropes and make the force of each set of wire ropes the same. Three-node uniform force device

Summary of the invention

 SUMMARY OF THE INVENTION The object of the present invention is to provide a three-node equalizing device capable of adjusting the forces of three sets of steel wire ropes and achieving the same force for each set of wire ropes to achieve the same set of elevator wire ropes in order to overcome the deficiencies of the prior art.

In order to achieve the above object, the technical solution adopted by the present invention is: a three-node equalizing device for a wire rope group for an elevator, comprising a balance seat and a 2-node uniform force assembly; the balance seat is rotatably disposed on the base; a 1-node uniform force component is rotatably disposed at one end of the balance seat; the other end of the balance seat is provided with a first spherical node; the first spherical node is rotatable about the balance seat; a center setting of the first spherical node a first through hole; the first through hole is used to install a wire rope set; and the two node equal force components are symmetrically disposed with two second spherical nodes along a central surface thereof; a center of rotation is located on a central surface thereof; a center of the second spherical node is provided with a second through hole; the second through hole is used for mounting a wire rope set; and a rotation center of the 2-node uniform force component is disposed thereon The rotation centers of the two second spherical nodes are on the same horizontal plane and are collinear; the rotation center of the rotation center balance seat of the two-node uniform force component and the rotation center of the first spherical node are The same horizontal plane, and collinear; the distance from the center of rotation of the 2-node uniform force component to the center of rotation of the balance seat is half the distance from the center of rotation of the first spherical node to the balance seat.

 Preferably, the bottom of the balance seat is provided with a first spherical protrusion; the base is provided with a first spherical cavity; the first spherical protrusion is placed into the first spherical cavity, the first spherical protrusion Rotating around the first spherical cavity.

 Preferably, a lower portion of the 2-node uniform force assembly is provided with a rotating frame; a center surface of the 2-node uniform force assembly coincides with a center surface of a rotating frame disposed thereon; and a bottom portion of the rotating frame is provided with a second a spherical protrusion; one end of the balance seat is provided with a second spherical cavity; the other end is provided with a fourth spherical cavity; the second spherical protrusion is disposed in the second spherical cavity; the second spherical protrusion may be Rotating around the second spherical cavity; a first spherical node is disposed in the fourth spherical cavity; and the first spherical node is rotatable around the fourth spherical cavity.

 Preferably, the two-node uniform force component is symmetrically disposed with two third spherical cavities along its central plane; each third spherical cavity is provided with a second spherical node, and each second spherical node can be wound A third spherical cavity rotation of the second spherical node is set.

 Preferably, the 2-node uniform force component is provided with a screw hole through which the rotating frame can be fixed at a lower portion of the 2-node uniform force component.

 Preferably, the base is uniformly provided with a fixing hole to facilitate the installation of the base.

 Preferably, the three-node equalizing device is mounted on the rope head or the tail of the wire rope set.

 Due to the use of the above technical solutions, the present invention has the following advantages over the prior art:

In the three-node equalizing device of the steel wire rope set for an elevator according to the present invention, the two-node equalizing component can rotate around the balance seat; the first spherical node can rotate around the balance seat; the balance seat can rotate around the base, Two second spherical spheres are symmetrically arranged on the two-node uniform force component a node, each of the second spherical nodes is rotatable about the 2-node uniform force component, and the rotation center of the 2-node uniform force component is on the same level as the rotation center of the two second spherical nodes disposed thereon, and Collinear; the rotation center of the 2-node uniform force component, the rotation center of the balance seat and the rotation center of the first spherical node are on the same horizontal plane, and are collinear; the rotation center of the 2-node uniform force component to the balance seat The distance from the center of rotation is half of the distance from the center of rotation of the first spherical node to the balance seat; the solution of the present invention can adjust the force of the three sets of wire ropes. When the present invention reaches a steady state, the force of each set of wire ropes will be the same. Therefore, the damage caused by the different force of the wire rope group of the elevator can be overcome, the service life of the wire rope group can be improved, and the safety of the elevator can be improved thereby.

酎阄 Description

 The technical solution of the present invention is further described below with reference to the accompanying drawings:

 Figure 1 is a partial cross-sectional view showing a three-node equalizing device of an elevator wire rope set according to the present invention;

 Figure 2 is an enlarged view of a cross-sectional view taken along line A A of Figure 1;

 Wherein: L balance seat; 2, 2 node equal force component; !>, base; 4 second spherical cavity; 5, first spherical protrusion; 6, first spherical cavity; 7, fixed tie; Cavity; 9. first spherical node; 〗 (], first through hole; 2 1, 2 node uniform force component body; 22, third spherical cavity; 23, screw hole; 24, rotating frame; a protrusion; 26, a second spherical node; 27, a second through hole.

 -^•^实万式

 The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

1 and 2 show a three-node equalizing device for a copper wire rope set for an elevator according to the present invention, which is installed on a rope head or/and a rope tail of three sets of steel wire ropes, and includes balance seats 1 and 2 a point equalizing force component 2; the balance seat 1 is rotatably or oscillatingly disposed on the base 3;

The 2-node uniform force assembly 2 is rotatably or oscillatingly disposed at one end of the balance base 1; the other end of the balance base 1 is provided with a first spherical node 9; the first spherical node 9 is rotatable or swingable around the balance seat 1 a first through hole 10 is disposed at a center of the first spherical node 9; the first through hole 10 is for mounting a set of wire ropes (not shown); the 2-node uniform force component 2 is along the same The center plane is symmetrically disposed with two second spherical nodes 26; the center of rotation of the two-node uniform force component 2 is located on the center plane thereof; and the second spherical node 26 is provided with a second through hole 27 in the center thereof; The second through hole 27 is for mounting a set of wire ropes (not shown); the center of rotation of the 2-node uniform force assembly 2 is at the same level as the center of rotation of the two second spherical nodes 26 disposed thereon Up, and collinear; the rotation center of the 2-node uniform force assembly 2, the rotation center of the balance seat 1 and the rotation center of the first spherical node 9 are on the same horizontal plane, and are collinear; the 2-node uniform force component 2 The distance from the center of rotation to the center of rotation of the balance seat 1 is the first spherical node 9 Half the distance from the center of rotation of the balance seat 1. In this embodiment, as shown in FIGS. 1 and 2, the bottom of the flat seat is provided with a first spherical protrusion 5; the base 3 is provided with a first spherical cavity 6; the first spherical convex 5 is placed in the first spherical cavity 6, the first spherical protrusion 5 is rotatable around the first spherical cavity 6; the lower part of the 2-node uniform force component 2 is provided with a rotating frame 24; The central surface of the assembly 2 coincides with the central surface of the rotating frame 24 disposed thereon; the bottom of the rotating frame 24 is provided with a second spherical protrusion 25; and one end of the balancing base 1 is provided with a second spherical cavity 4 The other end is provided with a fourth spherical cavity 8; the second spherical protrusion 25 is disposed in the second spherical cavity 4; the second spherical protrusion 25 is rotatable around the second spherical cavity 5; a first spherical node 9 is disposed in the four spherical cavity 8; the first spherical node 9 is rotatable around the fourth spherical cavity 8; the two-node uniform force assembly 2 is symmetrically disposed with two third spherical cavities 22 along its central plane; each third spherical cavity 22 is provided with a second spherical shape a node 2 3 , each of the second spherical nodes 2 3 is rotatable about a third spherical cavity 2 2 in which the second spherical node 2 3 is disposed; the 2-node uniform force component 2 is provided with a screw hole 2 3 through The screw hole 2 3 can fix the rotating frame 24 to the lower part of the 2-node uniform force assembly 2; the base 3 is uniformly provided with fixing holes 7 to facilitate the mounting of the base 3.

 The three-node equalizing device of the elevator wire rope set of the invention can be applied as a unit to a multi-node equalizing device, such as a 6-node equalizing device and a 7-node equalizing device. At this time, the base 3 is a balance seat. 1.

The present invention has the following advantages over the prior art: The three-node equalizing device of the elevator wire rope set of the present invention can swing or rotate around the balance seat; The first spherical node can swing or rotate around the balance seat; the balance seat can swing or rotate around the base, and two second spherical nodes are symmetrically disposed on the two-node uniform force component, and each second spherical node is The two-node uniform force component can be rotated, and the rotation center of the 2-node uniform force component is on the same horizontal plane as the rotation centers of the two second spherical nodes disposed thereon, and is collinear; The rotation center of the assembly, the rotation center of the balance seat and the rotation center of the first spherical node are on the same horizontal plane, and are collinear; the distance from the rotation center of the 2-node uniform force component to the rotation center of the balance seat is the first spherical node Half the distance from the center of rotation of the balance seat. Thus, the three-node equalizing device of the present invention utilizes the principle of the swing lever and the lever to have an independent mechanical relationship between each set of independent traction wire ropes and other wire ropes. Through this combination mechanism, when the traction wire rope set is subjected to a force, a change in the force of any one of them is transmitted to the spherical node, and the spherical node is swung, and the spherical node is subjected to the force swing. Will make the balance seat unbalanced and swing around its center of rotation, so that the force of the spherical nodes at both ends will be leveled and f, that is, using the principle of the bar (the torque is equal to the force multiplied by the distance), so that each set of wire rope The forces are equal. Similarly, each set of wire ropes and each set of wire ropes can also be balanced by the principle of leverage, so that each of the traction wire ropes is associated by a set of interlocking levers, and each wire rope is made. In this whole set of traction wire ropes, there is a fixed proportion of component force, so that each traction wire rope is equally stressed, which is achieved by winding each of the traction ropes in the traction traction wire rope group in the traction wheel groove. The purpose of the same friction.

 During the operation of the elevator, since each traction wire rope is equally stressed, the frictional force generated by the traction wire rope winding in the traction wheel groove is uniform, and the traction wire rope and the traction wheel groove do not cause relative slippage, and the traction is reduced. The wear of the wire rope and the traction sheave improves the service life of the traction sheave and the traction wire rope, and also improves the safety and reliability of the elevator.

The above embodiments are only intended to illustrate the technical concept and the features of the present invention, and the purpose of the present invention is to enable those skilled in the art to understand the contents of the present invention and not to limit the scope of the present invention. Equivalent changes or modifications made in substantial form are intended to be included within the scope of the invention.

Claims

i. A three-node force-equalizing device for an elevator wire rope assembly, characterized in that it includes a balance seat and a 2-node force-equalizing component; the balance seat is swingably mounted on the base; the 2-node force-equalizing component is rotatable The ground is provided at one end of the balance seat; the other end of the balance seat is provided with a first spherical node; the first spherical node can rotate around the balance seat; the center of the first spherical node is provided with a first through hole; The first through hole is used to install the wire rope set; the 2-node force-equalizing component is provided with 2 second spherical nodes symmetrically along its center plane; the rotation center of the 2-node force-equalizing component is located on its center surface above; a second through hole is provided in the center of the second spherical node; the second through hole is used to install the wire rope group; the rotation center of the 2-node force equalizing component and the 2 second spherical nodes arranged thereon The rotation centers of the nodes are on the same horizontal plane and are collinear; the rotation centers of the 2-node uniform force components, the rotation center of the balance seat and the first spherical node are on the same plane and are collinear; the 2 The distance between the rotation center of the node uniform force component and the rotation center of the balance base is half of the distance between the first spherical node and the rotation center of the balance base. 2. The three-node force equalizing device of the elevator wire rope group according to claim 1, characterized in that: the bottom of the balance seat is provided with a first spherical protrusion; the base is provided with a first spherical cavity; The first spherical protrusion is placed in the first spherical cavity, and the first spherical protrusion can rotate around the first spherical cavity. 3. The three-node force-equalizing device of the elevator wire rope group according to claim 1, characterized in that: a rotating frame is provided at the lower part of the 2-node force-equalizing component; the center plane and the arrangement of the 2-node force-equalizing component The center planes of the rotating frames on it coincide with each other; the bottom of the rotating frame is provided with a second spherical protrusion; one end of the balance seat is provided with a second spherical cavity; the other end is provided with a fourth spherical cavity; the third Two spherical protrusions are arranged in the second spherical cavity; the second spherical protrusion can rotate around the second spherical cavity; and a third spherical protrusion is arranged in the fourth spherical cavity. A spherical node; the first spherical node can rotate around the fourth spherical cavity. 4. The three-node force equalizing device of the elevator wire rope assembly according to claim 1 or 2 or 3, characterized in that: the two-node force equalizing component is provided with two third spherical shapes symmetrically along its central plane. Cavity; Each third spherical cavity is provided with a second spherical node, and each second spherical node can rotate around the third spherical cavity in which the second spherical node is arranged. 5. The three-node force equalizing device of the elevator wire rope group according to claim 4, characterized in that: the 2-node force equalizing component is provided with screw holes, and the rotating frame can be fixed at the 2-node through the screw holes. The lower part of the uniform force component. 6. The three-node force equalizing device of the elevator wire rope group according to claim 4, characterized in that: the base is evenly distributed with fixing holes to facilitate the installation of the base. Ί. Based on the three-node force equalizing device of the elevator wire rope set according to claim 1, it is characterized in that it is installed at the rope head or rope tail of the copper wire rope set.