High speed elevator compensating rope tensioning device

Abstract

The application discloses a high-speed elevator compensation rope tensioning device, which comprises a car, a counterweight device arranged on the right side of the car, and a protection assembly arranged below the car. The protection assembly comprises a buffer part arranged in a protection shell, the protection shell is fixedly installed on the outer surface of a support plate, an internal surface of a tensioning wheel arranged in the protection shell is provided with an annular groove, the protection assembly further comprises a friction part connected between the support plate and a guide rail plate, and the tensioning wheel is rotationally connected with a mounting block through a shaft, and the mounting block is fixedly installed on the bottom of the support plate near both ends. The buffer effect between the compensation rope and the tensioning wheel can be generated through the cooperation between the movable ring and the buffer spring, the first rubber ring and the second rubber ring can play a pulling role, the vibration amplitude of the buffer spring is reduced, and the stable damping effect can be achieved.

Description

Technical Field

[0001] This invention relates to the field of elevator technology, specifically to a high-speed elevator compensating rope tensioning device. Background Technology

[0002] An elevator is a vertical transportation device that carries people or goods. Elevators serve designated floors in a building and consist of a car that runs between at least two vertical or inclined rigid guide rails with an angle of less than 15°, facilitating passenger access and loading / unloading of goods. Statistics show that there are over 346,000 elevators in use in my country, and this number is increasing by approximately 50,000 to 60,000 units annually. Currently, with the development of elevator technology and the improvement of people's living standards, elevators are increasingly widely used in daily life and have become an indispensable part of daily life in China.

[0003] When the elevator's operating speed exceeds 3m / s, the weight compensation system for the elevator traction steel wire rope must adopt the form of steel wire rope compensation. One end of the elevator's compensation rope is fixed to the car frame, and the other end is fixed to the counterweight system to compensate for the weight changes of the steel wire ropes on both sides of the traction machine during elevator operation. This ensures that the tension difference between the steel wire ropes on both sides of the elevator traction machine is relatively stable, making the elevator run more smoothly. In order to ensure the stable and reliable operation of the compensation rope, a compensation rope tensioning device is usually installed in the elevator pit. The compensation rope is tightened by the self-weight of the compensation rope tensioning device.

[0004] According to the high-speed elevator compensating rope tensioning device disclosed in Chinese Patent Publication No. CN201923737U, this patent uses two tensioning pulleys. The compensating rope is wrapped around the two tensioning pulleys, which makes the movement of the compensating rope more stable and can more effectively prevent the compensating rope from vibrating, swaying, tangling and other phenomena, thereby further improving the stability and reliability of elevator operation.

[0005] However, the friction between the compensating rope and the tensioning pulley in this patent will still generate vibration, and the patent does not provide any protective measures for this. Therefore, it is necessary to design a high-speed elevator compensating rope tensioning device. Summary of the Invention

[0006] The purpose of this invention is to provide a high-speed elevator compensating rope tensioning device to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a high-speed elevator compensating rope tensioning device, including a car;

[0008] A counterweight device located on the right side of the car;

[0009] A protective assembly is provided below the car. The protective assembly includes a buffer part located inside the protective shell. The protective shell is fixedly installed on the outer surface of the support plate. A tensioning wheel is provided inside the protective shell. An annular groove is formed on the inner surface of the tensioning wheel. The protective assembly also includes a friction part connecting the support plate and the guide rail plate.

[0010] According to the above technical solution, the tensioning wheel is rotatably connected to the mounting block via a shaft, and the mounting block is fixedly installed at the bottom of both ends of the support plate.

[0011] According to the above technical solution, a compensating rope is fixedly installed on the bottom surface of the car. The other end of the compensating rope moves sequentially through the top surface of the protective shell, around the track of the tensioning wheel, moves through the top of the inner wall of the protective shell, extends to the top of the protective shell, and is fixedly connected to the bottom surface of the counterweight device.

[0012] According to the above technical solution, the inner diameter of the opening formed by the compensating rope penetrating the surface of the protective shell is larger than the diameter of the compensating rope. Setting the inner diameter of the opening formed on the top surface of the protective shell to be larger than the diameter of the compensating rope can prevent the compensating rope from contacting the inner wall of the opening, thereby avoiding friction. Therefore, this setting can reduce the wear on the compensating rope.

[0013] According to the above technical solution, there are two tensioning wheels, which are symmetrically distributed on both sides with the center line of the front of the protective shell as the axis of symmetry. The two tensioning wheels can limit the position of the compensation rope, avoid the phenomenon of the compensation rope swaying back and forth, thereby increasing the balance force of the compensation rope and making the entire elevator lifting process more stable.

[0014] According to the above technical solution, a counterweight is fixedly installed on the top surface of the support plate. The number of counterweights is five, and the five counterweights are evenly distributed on the top surface of the support plate. The installed counterweights can provide force to the support plate, so that the support plate has a downward movement tendency.

[0015] According to the above technical solution, the buffer part includes a first rubber ring and a second rubber ring fixedly installed in an annular groove on the inner wall of the tensioning wheel. The first rubber ring and the second rubber ring are the same size and are movably engaged with a movable ring. A buffer spring is provided between the second rubber ring and the inner annular groove. One end of the buffer spring is fixedly connected to the inner wall of the annular groove, and the other end of the buffer spring is fixedly installed on the surface of the movable ring. There are eight buffer springs, which are equally spaced and arranged in annularly in the annular groove. The buffer springs can generate an inward force on the movable ring when the compensating rope is working, so that the buffer spring can produce a buffering effect and reduce the vibration force. At the same time, the first rubber ring and the second rubber ring can form a squeezing force when the movable ring generates an inward force, which reduces the vibration amplitude of the buffer spring. Finally, the overall vibration reduction effect can be made stable.

[0016] According to the above technical solution, the outer surface of the movable ring is respectively contacted with a first sealing ring and a second sealing ring. The first sealing ring is fixedly connected to the inner wall of the annular groove and the surface of the first rubber ring. The outer surface of the second sealing ring is fixedly connected to the inner wall of the annular groove and the surface of the second rubber ring. The first sealing ring and the second sealing ring can prevent the first rubber ring and the second rubber ring from being exposed to the outside, thus playing a protective role for the first rubber ring and the second rubber ring.

[0017] According to the above technical solution, the friction part includes a connecting block fixedly installed on the side of the support plate. A sliding rod is fixedly installed at one end of the connecting block. A rectangular groove is opened on the side of the guide plate. An inner groove is opened on the inner wall of the rectangular groove. The sliding rod is disposed in the inner groove, but does not contact the inner groove. A columnar rod is fixedly installed on one side of the sliding rod. A rolling ring is rotatably connected to the outer wall of the columnar rod. The rolling ring is in contact with one side of the sliding rod. A ball is fixedly installed at one end of the columnar rod. The ball is slidably disposed in an inner groove two opened on the inner wall of the inner groove. The rolling ring and the ball can form rolling friction instead of sliding friction, thereby reducing the friction effect and extending its service life.

[0018] According to the above technical solution, elastic airbags are provided above and below the slide rod. The elastic airbags are fixedly installed on the inner wall of the inner groove. The elastic airbags are connected to the air outlets opened on the surface of the guide plate. The number of air outlets corresponds to the number of elastic airbags. The elastic airbags can generate gas flow when the friction part is working, so that the gas can be blown out through the air outlets and blown toward the compensation rope. Since the compensation rope will generate external heat due to friction when working, the gas blown toward the compensation rope can cool the outer surface of the compensation rope.

[0019] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0020] 1. The present invention avoids the phenomenon of the compensating rope shifting back and forth during operation by setting the compensating rope to pass around two tensioning pulleys. This makes the compensating rope more stable during operation and makes the entire elevator more stable during lifting and lowering.

[0021] 2. The present invention can create a buffering effect between the compensating rope and the tensioning wheel by cooperating with the movable ring and the buffer spring. At the same time, the first rubber ring and the second rubber ring can play a traction role, reducing the vibration amplitude of the buffer spring, thus achieving a smooth vibration reduction effect.

[0022] 3. By rotating the rolling ring onto the cylindrical rod and using a rolling ball as a limiting structure, the original sliding friction can be replaced by rolling friction, reducing the friction effect at that point and increasing its service life.

[0023] 4. By setting up an elastic air bladder and an air outlet, the present invention can form a gas flow at the friction part when it is working, thereby dissipating heat from the compensating rope in the working state and reducing the heat generated by friction in the compensating rope. Attached Figure Description

[0024] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0025] Figure 1 This is a three-dimensional structural diagram of a high-speed elevator compensating rope tensioning device according to the present invention;

[0026] Figure 2 This invention relates to a high-speed elevator compensating rope tensioning device. Figure 1 A schematic diagram of the local internal structure of the [the structure].

[0027] Figure 3 This is a rear-view structural diagram of the tensioning wheel in a high-speed elevator compensating rope tensioning device according to the present invention.

[0028] Figure 4 This is a schematic cross-sectional view of the right side of the tensioning wheel in a high-speed elevator compensating rope tensioning device of the present invention;

[0029] Figure 5 This invention relates to a high-speed elevator compensating rope tensioning device. Figure 4 Enlarged diagram of point A in the diagram;

[0030] Figure 6 This is a side cross-sectional view of the guide rail plate in a high-speed elevator compensating rope tensioning device according to the present invention.

[0031] Figure 7 This invention relates to a high-speed elevator compensating rope tensioning device. Figure 6 A magnified structural diagram at point B in the diagram.

[0032] In the diagram: 1. Car, 2. Counterweight device, 3. Compensating rope, 4. Support plate, 5. Counterweight block, 6. Protective shell, 7. Protective components, 71. Buffer part, 711. Moving ring, 712. First sealing ring, 713. First rubber ring, 714. Buffer spring, 715. Second sealing ring, 716. Second rubber ring, 72. Friction part, 721. Connecting block, 722. Slide rod, 723. Rolling ring, 724. Column rod, 725. Ball, 8. Guide rail plate, 9. Tensioning wheel, 10. Shaft, 11. Mounting block, 12. Elastic airbag. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the invention, and should not be construed as limiting the invention.

[0035] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0036] Please see Figure 1-7The present invention provides a technical solution: a high-speed elevator compensating rope tensioning device, including a car 1, a compensating rope 3 fixedly installed on the bottom surface of the car 1, the other end of the compensating rope 3 movably passing through the top surface of the protective shell 6, passing over the track of the tensioning wheel 9, movably passing through the top of the inner wall of the protective shell 6 and extending to the top of the protective shell 6, and fixedly connected to the bottom surface of the counterweight device 2. The inner diameter of the opening formed by the compensating rope 3 through the surface of the protective shell 6 is larger than the diameter of the compensating rope 3. This can avoid the compensating rope 3 from contacting the inner wall of the opening, thereby avoiding friction. Therefore, this setting can reduce the wear of the compensating rope 3.

[0037] The counterweight device 2 is located on the right side of the car 1;

[0038] A protective assembly 7 is installed below the car 1. The protective assembly 7 includes a buffer part 711 located inside the protective shell 6. The protective shell 6 is fixedly installed on the outer surface of the support plate 4. Five counterweights 5 are fixedly installed on the top surface of the support plate 4. The five counterweights 5 are evenly distributed on the top surface of the support plate 4. The installed counterweights 5 can provide force to the support plate 4, giving the support plate 4 a downward movement tendency. A tensioning wheel 9 is installed inside the protective shell 1. The inner surface of the tensioning wheel 9 has an annular groove. The tensioning wheel 9 passes through... The shaft 10 is rotatably connected to the mounting block 11. There are two tensioning wheels 9. The two tensioning wheels 9 are symmetrically distributed on both sides with the center line of the front of the protective shell 6 as the axis of symmetry. The two tensioning wheels 9 can limit the position of the compensating rope 3, avoid the phenomenon of the compensating rope 3 swaying back and forth, thereby increasing the balance force of the compensating rope 3, and making the entire elevator lifting process more stable. The mounting block 11 is fixedly installed at the bottom of both ends of the bracket plate 4. The protective component 7 also includes a friction part 72 connected between the bracket plate 4 and the guide rail plate 8.

[0039] The buffer section 71 includes a first rubber ring 713 and a second rubber ring 716 fixedly installed in an annular groove on the inner wall of the tension wheel 9. The first rubber ring 713 and the second rubber ring 716 are the same size. A movable ring 711 is movably engaged between the first rubber ring 713 and the second rubber ring 716. A buffer spring 714 is provided between the second rubber ring 716 and the inner annular groove. One end of the buffer spring 714 is fixedly connected to the inner wall of the annular groove, and the other end of the buffer spring 714 is fixedly installed on the surface of the movable ring 711. There are eight buffer springs 714, which are equally spaced and arranged in annularly in the annular groove. A first sealing ring 712 and a second sealing ring 715 are respectively contacted on the outer surface of the movable ring 714. The first sealing ring 712 is respectively contacted with the inner wall of the annular groove and the first sealing ring 715. The surface of the rubber ring 713 is fixedly connected, the outer surface of the second sealing ring 715 is fixedly connected to the inner wall of the annular groove, and the surface of the second rubber ring 716 is fixedly connected. The buffer spring 714 can generate an inward force on the movable ring 711 when the compensating rope 3 is working, so that the buffer spring 714 can produce a buffering effect and reduce the vibration force. At the same time, the first rubber ring 713 and the second rubber ring 715 can form a squeezing force when the movable ring 711 generates an inward force, which reduces the vibration amplitude of the buffer spring 714. Finally, the entire vibration reduction effect can be made stable. The first sealing ring 712 and the second sealing ring 715 can prevent the first rubber ring 713 and the second rubber ring 716 from being exposed to the outside, and play a protective role for the first rubber ring 713 and the second rubber ring 716.

[0040] The friction part 72 includes a connecting block 721 fixedly installed on the side of the support plate 4. A slide rod 722 is fixedly installed at one end of the connecting block 721. A rectangular groove is opened on the side of the guide plate 8. An inner groove 1 is opened on the inner wall of the rectangular groove. The slide rod 722 is disposed in the inner groove 1, but the slide rod 722 does not contact the inner groove 1. A columnar rod 724 is fixedly installed on one side of the slide rod 722. A rolling ring 723 is rotatably connected to the outer wall of the columnar rod 724. The rolling ring 723 is in contact with one side of the slide rod 722. A ball 725 is fixedly installed at one end of the columnar rod 724. The ball 725 is slidably disposed in an inner groove 2 opened on the inner wall of the inner groove 1. The rolling ring 723 and the ball 725 can form rolling friction instead of sliding friction, thereby reducing the friction effect and extending its service life.

[0041] Elastic airbags 12 are provided above and below the slide bar 722. The elastic airbags 12 are fixedly installed on the inner wall of the inner groove 1. The elastic airbags 12 are connected to the air outlets opened on the surface of the guide plate 8. The number of air outlets corresponds to the number of elastic airbags 12. The elastic airbags 12 can generate gas flow when the friction part 72 is working, so that the gas can be blown out through the air outlets and blown toward the compensation rope 3. Since the compensation rope 3 will generate external heat due to friction when working, the gas blown toward the compensation rope 3 can cool the outer surface of the compensation rope 3.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0043] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

[0044] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-speed elevator compensating rope tensioning device, comprising a car (1); A counterweight device (2) is installed on the right side of the car (1); The protection assembly (7) is arranged below the car (1), characterized in that: The protective component (7) includes a buffer part (71) disposed inside the protective shell (6). The protective shell (6) is fixedly installed on the outer surface of the support plate (4). A tensioning wheel (9) is disposed inside the protective shell (6). An annular groove is provided on the inner surface of the tensioning wheel (9). The protective component (7) also includes a friction part (72) connected between the support plate (4) and the guide rail plate (8). The buffer part (71) includes a first rubber ring (713) and a second rubber ring (716) fixedly installed in an annular groove on the inner wall of the tension wheel (9). The first rubber ring (713) and the second rubber ring (716) are the same size. A movable ring (711) is movably engaged between the first rubber ring (713) and the second rubber ring (716). A buffer spring (714) is provided between the second rubber ring (716) and the first rubber ring (713). One end of the buffer spring (714) is fixedly connected to the inner wall of the annular groove, and the other end of the buffer spring (714) is fixedly installed on the surface of the movable ring (711). There are eight buffer springs (714), and the eight buffer springs (714) are arranged in annularly at equal intervals in the annular groove. The outer surface of the movable ring (711) is respectively contacted by a first sealing ring (712) and a second sealing ring (715). The first sealing ring (712) is fixedly connected to the inner wall of the annular groove and the surface of the first rubber ring (713). The outer surface of the second sealing ring (715) is fixedly connected to the inner wall of the annular groove and the surface of the second rubber ring (716). The friction part (72) includes a connecting block (721) fixedly installed on the side of the support plate (4). A slide rod (722) is fixedly installed at one end of the connecting block (721). A rectangular groove is opened on the side of the guide plate (8). An inner groove is opened on the inner wall of the rectangular groove. The slide rod (722) is set in the inner groove, but the slide rod (722) does not contact the inner groove. A columnar rod (724) is fixedly installed on one side of the slide rod (722). A rolling ring (723) is rotatably connected to the outer wall of the columnar rod (724). The rolling ring (723) is in contact with one side of the slide rod (722). A ball (725) is fixedly installed at one end of the columnar rod (724). The ball (725) is slidably set in the inner groove two opened on the inner wall of the inner groove. Elastic airbags (12) are provided above and below the slide bar (722). The elastic airbags (12) are fixedly installed on the inner wall of the inner groove. The elastic airbags (12) are connected to the air outlets opened on the surface of the guide plate (8). The number of air outlets corresponds to the number of elastic airbags (12).

2. A high speed elevator compensating rope tensioning device according to claim 1, characterized in that: The tensioning wheel (9) is rotatably connected to the mounting block (11) via the shaft (10), and the mounting block (11) is fixedly installed at the bottom of both ends of the bracket plate (4).

3. The high-speed elevator compensating rope tensioning device according to claim 1, characterized in that: The bottom surface of the car (1) is fixedly installed with a compensating rope (3). The other end of the compensating rope (3) moves through the top surface of the protective shell (6), around the track of the tension wheel (9), moves through the top of the inner wall of the protective shell (6) and extends to the top of the protective shell (6), and is fixedly connected to the bottom surface of the counterweight device (2).

4. The high-speed elevator compensating rope tensioning device according to claim 3, characterized in that: The inner diameter of the opening formed by the compensating rope (3) penetrating the surface of the protective shell (6) is larger than the diameter of the compensating rope (3).

5. The high-speed elevator compensating rope tensioning device according to claim 1, characterized in that: The number of tensioning wheels (9) is two, and the two tensioning wheels (9) are symmetrically distributed on both sides with the center line of the front of the protective shell (6) as the axis of symmetry.

6. The high-speed elevator compensating rope tensioning device according to claim 1, characterized in that: The top surface of the support plate (4) is fixedly equipped with a counterweight (5). There are five counterweights (5), and the five counterweights (5) are evenly distributed on the top surface of the support plate (4).

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