CN109941864B - Compensation Chain and Elevator - Google Patents

Abstract

The present application discloses a compensating chain and an elevator, comprising a plurality of first chain links and a plurality of second chain links, the first chain links are connected with the second chain links at intervals, and the first chain links are provided with cavities open at both ends , the first link is connected with a connecting rod, the connecting rod passes through the cavity, one end of the connecting rod is rotatably connected with the first connecting piece, the other end of the connecting rod is rotatably connected with the second connecting piece, the first connecting piece and the second connecting piece All parts rotate along the circumferential direction of the first link. The first link is located between the first connecting piece and the second connecting piece. The connecting rod is sleeved with a double torsion spring to avoid damage to the compensation chain due to excessive torsion. , Improve the comfort and safety of taking the elevator.

Description

Compensation Chain and Elevator

technical field

The invention generally relates to the field of elevators, in particular to a compensation chain and an elevator.

Background technique

When the lifting height of the van elevator exceeds 30 meters, it is necessary to use the compensation chain. Because when the elevator is on the top floor, the steel wire rope is on the counterweight side, and the weight of the steel wire rope is added to the counterweight side; when the elevator is on the bottom floor, the steel wire rope is on the car side, and the weight of the steel wire rope is added to the car side. Due to the weight of the steel wire rope, as the elevator moves up and down, dynamic imbalance will be generated. Therefore, the compensation chain can be used to balance this part of the drop, which is used to compensate the weight of the steel wire rope and make the elevator run smoothly.

The links of the existing compensating chains can be freely rotated or moved in the longitudinal direction at will, and the free bending radius is difficult to control. During the operation of the elevator, the compensating chain is prone to swing or even twist, which affects the comfort of the elevator , and even damage other parts of the elevator.

Contents of the invention

In view of the above defects or deficiencies in the prior art, it is desired to provide a compensating chain and an elevator that do not cause relative movement between chain links and can buffer the torsion of the compensating chain.

In the first aspect, the compensation chain of the present invention includes a plurality of first links and a plurality of second links, the first links are connected to the second links at intervals, and the first links are provided with cavities with openings at both ends, The first link is connected with a connecting rod, the connecting rod passes through the cavity, one end of the connecting rod is rotatably connected with the first connecting piece, the other end of the connecting rod is rotatably connected with the second connecting piece, the first connecting piece and the second connecting piece Both rotate along the circumferential direction of the first chain link, the first chain link is located between the first connecting piece and the second connecting piece, the connecting rod is sleeved with a double torsion spring, and the double torsion spring includes a clamping part, a first connecting part and the second connecting part, the clamping part is fixed to the first link, the first connecting part is fixed to the first connecting part, the second connecting part is fixed to the second connecting part, and the two second connecting parts adjacent to the first link Any second link in the chain links is rotatably connected to the first link, and the other second link is rotatably connected to the second link, and the rotation direction of the second link relative to the first link is opposite to the first link perpendicular to the direction of rotation of the first link.

In the second aspect, the elevator of the present invention includes a counterweight frame, a car and a compensation chain, one end of the compensation chain is fixedly connected to the bottom of the counterweight frame, and the other end of the compensation chain is fixedly connected to the bottom of the car.

According to the technical solution provided by the embodiment of the application, the relative movement in the longitudinal direction between the first chain link and the second chain link is avoided by rotationally connecting the first chain link and the second chain link. When the compensation chain twists, the second chain link A connecting piece or a second connecting piece will rotate relative to the first link, and the double torsion spring can buffer the rotation of the compensation chain. At the same time, the double torsion spring can also convert the torsional force of the compensation chain into a double torsion spring After the elevator stops, the double torsion spring can release the deformation and drive the compensation chain to rotate, so that the compensation chain returns to the original state before the torsion, avoiding the damage of the compensation chain due to excessive torsion, and improving the comfort of the elevator and Safety can solve the problem that the existing compensation chain is prone to swing or even reverse, which affects the comfort of the elevator.

Description of drawings

Other characteristics, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

Fig. 1 is the structural representation of the compensation chain of the embodiment of the present invention;

Fig. 2 is a structural schematic diagram of the first chain link of the compensation chain according to the embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a compensation chain according to an embodiment of the present invention;

Fig. 4 is a schematic structural view of the first chain link of the compensation chain according to the embodiment of the present invention;

Fig. 5 is a schematic structural diagram of the first connecting member of the compensation chain according to the embodiment of the present invention.

Detailed ways

The application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain related inventions, rather than to limit the invention. It should also be noted that, for ease of description, only parts related to the invention are shown in the drawings.

It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.

One of the embodiments of the present invention is, please refer to FIGS. 1 to 5, the compensation chain of the present invention includes a plurality of first chain links 10 and a plurality of second chain links 20, the first chain links 10 and the second chain links 20 Interval connection, the first chain link 10 is provided with a cavity 11 with both ends open, the first chain link 10 is connected with a connecting rod 40, the connecting rod 40 passes through the cavity 11, and one end of the connecting rod 40 is rotatably connected with the first connecting piece 41, the other end of the connecting rod 40 is rotatably connected to the second connecting piece 42, the first connecting piece 41 and the second connecting piece 42 both rotate along the circumferential direction of the first chain link 10, and the first chain link 10 is located at the first link Between the piece 41 and the second connecting piece 42, the connecting rod 40 is sleeved with a double torsion spring 30, the double torsion spring 30 includes a clamping part 31, a first connecting part 32 and a second connecting part 33, the clamping part 31 and the second connecting part One chain link 10 is fixed, the first connecting part 32 is fixed to the first connecting part 41, the second connecting part 33 is fixed to the second connecting part 42, and any of the two second chain links 20 adjacent to the first chain link 10 One second link 20 is rotatably connected to the first link 41, the other second link 20 is rotatably connected to the second link 42, and the second link 20 is connected to the first link 10 relative to the rotation direction of the first link 10. The member 41 is perpendicular to the direction of rotation of the first link 10 .

In the embodiment of the present invention, the first chain link is provided with a cavity with openings at both ends, and the cavity is arranged along the transverse direction of the compensation chain, which can fix the first connecting rod and the first chain link, or connect the first connecting rod A rod is rotationally connected to the first link. When the first connecting rod is rotationally connected with the first chain link, two bearings are fixed at intervals in the cavity, and the inner rings of the two bearings are respectively fixed with the first connecting rod.

The first connecting piece can be but not only a rectangular parallelepiped connecting piece, the second connecting piece can be but not only a rectangular parallelepiped connecting piece, the first connecting piece can be rotatably connected with the connecting piece through a bearing, and the second connecting piece can be rotated with the connecting piece through a bearing For connection, of course, limit blocks can be provided at both ends of the connecting rod, and the limit blocks can prevent the first connecting piece and the second connecting piece from detaching from the connecting rod, thereby improving the reliability of the compensation chain.

When the compensation chain twists, the first connecting piece or the second connecting piece rotates along the circumferential direction of the first chain link, which drives the double torsion spring to deform, and the double torsion spring can buffer the torsion of the compensation chain. At the same time, When the elevator stops moving, the double torsion spring can release the deformation and drive the compensation chain to return to the state before the twist, avoiding the knotting of the compensation chain, improving the reliability and stability of the compensation chain, and avoiding the compensation chain due to excessive torsion. damage, which improves the comfort and safety of taking the elevator.

The first link is rotationally connected to the second link, and the rotation direction of the second link relative to the first link is perpendicular to the rotation direction of the first link relative to the first link, that is, when the second link is relative to the first link. When a connecting piece rotates, the end of the second link away from the first link will approach or move away from the first link. It may be, but not only, that the second link is provided with a rotating shaft, and the first connecting piece is provided with a rotating hole. The rotating shaft rotates in the rotating hole, and the central axis of the rotating hole is perpendicular to the central axis of the connecting rod.

The second link is rotationally connected to the second link, and the rotation direction of the second link relative to the first link is perpendicular to the rotation direction of the second link relative to the first link, that is, when the second link is relative to the first link. When the second connecting piece rotates, the end of the second link away from the first link will approach or move away from the first link. It may be, but not limited to, that the second link is provided with a rotating shaft, and the second connecting piece is provided with a rotating hole. The rotating shaft rotates in the rotating hole, and the central axis of the rotating hole is perpendicular to the central axis of the connecting rod. The first chain link and the second chain link can only produce relative rotation, but not relative movement, which can reduce the vibration of the compensation chain during the running of the elevator.

Further, the first connecting portion 32 and the second connecting portion 33 have the same rotation direction.

In the embodiment of the present invention, the first connection part and the second connection part have the same rotation direction, that is, the rotation direction of the two sub-springs of the double torsion spring is the same, which can ensure that no matter how the second chain link is twisted, the rotation direction of the double torsion spring is the same. The inner diameter of one of the two sub-springs can be reduced, that is, this sub-spring is in normal working condition, prolonging the service life of the double torsion spring.

Further, the side of the first link 41 facing the first link 10 is provided with a first protrusion 43, and the side of the first link 10 facing the first link 41 is provided with a first limiting groove 12, and the first protrusion 43 slides in the first limiting groove 12, the first limiting groove 12 includes a first stop surface 13, the first stop surface 13 is used to stop the first protrusion 43 to prevent the first connecting part 32 from reverse twisting .

In the embodiment of the present invention, the movement range of the first projection is limited by the first stop surface, thereby limiting the rotation angle of the first connecting member, and avoiding the abnormal working state of reverse twisting of the sub-springs of the double torsion spring.

Further, the first limiting groove 12 includes a second stop surface 14 , and the first stop surface 13 and the second stop surface 14 are located at two ends of the first limiting groove 12 .

In the embodiment of the present invention, the range of motion of the first protrusion is limited by the second stop surface, thereby limiting the rotation angle of the first connecting member, avoiding excessive deformation of the sub-spring of the double torsion spring, and improving the performance of the double torsion spring. service life.

Further, the side of the second connecting piece 42 facing the first link 10 is provided with a second protrusion, and the side of the first link 10 facing the second connecting piece 42 is provided with a second limiting groove, and the second protrusion is on the second connecting piece 42. Sliding in the two limiting grooves, the second limiting groove includes a third stop surface, and the third stop surface is used to stop the second protrusion to prevent the second connecting part 33 from reverse twisting.

In the embodiment of the present invention, the movement range of the second protrusion is limited by the third stop surface, thereby limiting the rotation angle of the second connecting member, and avoiding the abnormal working state of the sub-spring of the double torsion spring in reverse torsion.

Further, the second limiting groove includes a fourth stop surface, and the third stop surface and the fourth stop surface are located at two ends of the second limit groove.

In the embodiment of the present invention, the range of movement of the second protrusion is limited by the fourth stop surface, thereby limiting the rotation angle of the second connecting member, avoiding excessive deformation of the sub-spring of the double torsion spring, and improving the performance of the double torsion spring. service life.

Further, the second chain link 20 is a cuboid, and the second chain link 20 is provided with a chain hole.

In the embodiment of the present invention, the second chain link is a cuboid, and the second chain link is provided with a chain hole, which facilitates the processing and manufacturing of the compensation chain and can save raw materials at the same time.

Another embodiment of the present invention is an elevator comprising a counterweight frame, a car and a compensation chain, one end of the compensation chain is fixedly connected to the bottom of the counterweight frame, and the other end of the compensation chain is fixedly connected to the bottom of the car.

In the embodiment of the present invention, the weight drop during the up and down movement of the elevator is balanced by the compensation chain, and the first chain link and the second chain link are rotationally connected to avoid longitudinal tension between the first chain link and the second chain link. When the compensation chain twists, the first link or the second link will rotate relative to the first link, and the double torsion spring can buffer the rotation of the compensation chain. At the same time, the double torsion spring It can also convert the torsional force of the compensation chain into the deformation of the double torsion spring. After the elevator is stationary, the double torsion spring can release the deformation and drive the compensation chain to rotate, so that the compensation chain returns to the original state before the torsion, avoiding the damage caused by the excessive torsion of the compensation chain. The damage of the compensation chain improves the comfort and safety of taking the elevator.

The above description is only a preferred embodiment of the present application and an illustration of the applied technical principle. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to the technical solution formed by the specific combination of the above-mentioned technical features, but should also cover the technical solution formed by the above-mentioned technical features without departing from the inventive concept. Other technical solutions formed by any combination of or equivalent features thereof. For example, a technical solution formed by replacing the above-mentioned features with technical features with similar functions disclosed in (but not limited to) this application.

Claims (7)

1. The utility model provides a compensation chain, its characterized in that includes a plurality of first chain links and a plurality of second chain links, first chain links with second chain links interval connection, first chain links is provided with both ends open-ended cavity, first chain links are connected with the connecting rod, the connecting rod passes the cavity, the one end rotation of connecting rod is connected with first connecting piece, the other end rotation of connecting rod is connected with the second connecting piece, first connecting piece with the second connecting piece is all along the circumferential direction of first chain links, first chain links is located between first connecting piece with the second connecting piece, the connecting rod both ends set up the stopper respectively, the stopper is used for preventing first connecting piece with the second connecting piece breaks away from the connecting rod,

the connecting rod has cup jointed two torsional springs, two torsional springs include joint portion, first connecting portion and second connecting portion, joint portion with first chain link is fixed, first connecting portion with first connecting piece is fixed, second connecting portion with the second connecting piece is fixed, with two adjacent second chain links in the second chain link with first connecting piece rotates to be connected, another second chain link with second connecting piece rotates to be connected, the second chain link for the direction of rotation of first chain link with first connecting piece for the direction of rotation of first chain link is perpendicular.

2. The compensation chain of claim 1, wherein the first connection and the second connection are of the same rotational direction.

3. The compensation chain of claim 1, wherein a side of the first link facing the first link is provided with a first protrusion, a side of the first link facing the first link is provided with a first limit groove, the first protrusion slides within the first limit groove, the first limit groove includes a first stop surface for stopping the first protrusion to prevent reverse rotation of the first link.

4. A compensation chain according to claim 3, wherein the first limit groove comprises a second stop surface, the first stop surface and the second stop surface being located at opposite ends of the first limit groove.

5. The compensation chain of claim 1, wherein a side of the second connecting member facing the first link is provided with a second protrusion, a side of the first link facing the second connecting member is provided with a second limit groove, the second protrusion slides within the second limit groove, the second limit groove includes a third stop surface for stopping the second protrusion to prevent reverse rotation of the second connecting portion.

6. The compensation chain of claim 5, wherein the second limit groove includes a fourth stop surface, the third stop surface and the fourth stop surface being located at opposite ends of the second limit groove.

7. The compensation chain of claim 1, wherein the second link is a cuboid, the second link being provided with a chain aperture.

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