Elevator counterweight housing traction system

Abstract

The utility model discloses an elevator counterweight housing traction system, which relates to the technical field of elevators and comprises a counterweight assembly, a base, a driving assembly and a steel wire rope assembly. The counterweight wheels are mounted at the top of the counterweight housing, and the two counterweight wheels are symmetrically distributed relative to the center line of the counterweight housing; the steel wire rope assembly comprises an even number of steel wire ropes, one half of the steel wire ropes are wound on one counterweight wheel, the other half of the steel wire ropes are wound on the other counterweight wheel, one end of each steel wire rope is fixed to the machine base, and the steel wire ropes are wound around the corresponding counterweight wheels, then penetrate out of the middle area between the two counterweight wheels and are connected with the traction wheel. The two counterweight wheels are symmetrically arranged on the top of the counterweight housing in the left-right direction, and the steel wire ropes are wound on the counterweight wheels in groups, so that centralized arrangement of traction ropes on the counterweight housing is realized, the counterweight housing does not need to be integrally shifted to the side wall of a shaft, interference risks caused by insufficient space are effectively reduced, stress of the counterweight housing during lifting is more balanced, and the service life of the counterweight housing is prolonged. The operation stability is improved.

Description

Technical Field

[0001] This application relates to the field of elevator technology, and in particular to an elevator counterweight traction structure. Background Technology

[0002] In elevator technology, to ensure balance between the car and counterweight and meet the requirements for safe elevator operation, a counterweight frame is typically installed in the shaft and connected to the elevator drive mechanism via traction steel wire ropes to achieve the lifting and lowering of the counterweight and car. In existing technologies, especially when using a 2:1 suspension system, only one counterweight sheave is generally used to drive the counterweight frame. To simplify the overall rope winding complexity and the transmission path of the steel wire rope, it is generally desirable for the drive end of the traction rope to be located at the center of the elevator shaft side. To meet these requirements, traditional 2:1 suspension elevators often require the entire counterweight frame to be offset to one side of the elevator shaft wall. While this arrangement helps ensure the traction end is near the car centerline, it increases the risk of interference between the counterweight frame and surrounding components, especially in situations where shaft space is already limited or sufficient space must be reserved for passenger door opening. Utility Model Content

[0003] This application aims to at least solve one of the technical problems existing in the prior art. To this end, this application proposes an elevator counterweight traction system that enables the traction end of the counterweight to be located at the central axis of the counterweight.

[0004] An elevator counterweight traction system according to an embodiment of this application includes: a counterweight assembly, the counterweight assembly including a counterweight frame and two counterweight wheels, the counterweight wheels being rotatably mounted on the top of the counterweight frame via axles, and the two counterweight wheels being at the same horizontal height and symmetrically distributed relative to the centerline of the counterweight frame; a track assembly for guiding the vertical movement of the counterweight assembly; a base, the base being disposed above the track assembly; a drive assembly, the drive assembly including a drive motor and a traction sheave; the drive motor being disposed on the base, and the traction sheave being connected to the drive end of the drive motor; and a wire rope assembly, the wire rope assembly including an even number of wire ropes, wherein half of the wire ropes are wound around one counterweight wheel, and the other half of the wire ropes are wound around the other counterweight wheel, one end of each wire rope being fixed to the base via a rope end assembly, and the wire rope passing around the corresponding counterweight wheel and exiting from the middle region between the two counterweight wheels, and connecting to the traction sheave.

[0005] The elevator counterweight traction system according to the embodiments of this application has at least the following beneficial effects: The elevator counterweight traction system of the embodiment achieves the centralized arrangement of the counterweight traction rope (extending from the base or drive end) by arranging two counterweight wheels side by side on the top of the counterweight frame and dividing the suspension wire rope into two equal groups and winding them around the two counterweight wheels respectively. Compared to existing solutions that only have a single counterweight sheave and require offset placement against the shaft sidewall, the elevator counterweight traction system of this embodiment has the following advantages: Reduced shaft space requirements: After the traction rope is centrally wound around the counterweight frame, there is no need to move the entire counterweight frame to the shaft sidewall, reducing dependence on shaft dimensions and making it particularly suitable for installation in narrow shafts; Reduced interference possibilities: The counterweight frame is no longer offset, effectively avoiding interference from the elevator door opening system, door operator, and other auxiliary components, reducing or eliminating component interference problems caused by insufficient space; More balanced force distribution: Because the wire ropes are symmetrically distributed in an even number on the two counterweight sheaves, and the two counterweight sheaves are at the same horizontal height and symmetrically arranged relative to the centerline of the counterweight frame, the counterweight frame is more stable in terms of vertical movement and force distribution, which is more conducive to safe elevator operation; Easier installation and maintenance: The symmetrical distribution of the counterweight sheaves on the counterweight frame makes it easier to adjust the tension of the wire ropes, and the double-sheave arrangement facilitates quick replacement or maintenance of the wire ropes, improving daily maintenance efficiency.

[0006] In summary, by symmetrically arranging counterweight wheels on both sides of the counterweight frame and improving the way the steel wire rope is wound, the elevator counterweight traction system of the embodiment not only ensures that the elevator traction end is located at the center of the counterweight frame, but also takes into account the stability and force balance of the counterweight frame. It has the advantages of simple structure, high adaptability, and applicability to multiple scenarios, and effectively solves the problems of interference between the counterweight frame and components and installation difficulties in narrow shafts in the existing technology.

[0007] According to some embodiments of this application, the traction sheave is positioned directly above the center of symmetry of the two counterweight sheaves.

[0008] According to some embodiments of this application, the counterweight frame includes counterweight blocks, two parallel side plates, an upper plate beam, and a lower plate beam. The two ends of the upper plate beam are respectively connected to the upper parts of the two side plates, and the two ends of the lower plate beam are respectively connected to the lower parts of the side plates. Multiple counterweight blocks are provided and arranged vertically between the two side plates. The two ends of the counterweight blocks are respectively inserted into the two side plates. The axles of the two counterweight wheels are connected to the upper plate beam, and the center of symmetry of the two counterweight wheels is located at the center of the upper plate beam.

[0009] According to some embodiments of this application, the upper plate beam includes a first upper plate beam and a second upper plate beam disposed opposite to each other. The two ends of the first upper plate beam are respectively connected to one side of the two side clamps, and the two ends of the second upper plate beam are respectively connected to the other side of the two side clamps. The counterweight wheel is disposed between the first upper plate beam and the second upper plate beam, and the two ends of the wheel axle of the counterweight wheel are respectively connected to the first upper plate beam and the second upper plate beam.

[0010] According to some embodiments of this application, the counterweight assembly further includes a plurality of anti-detachment brackets, the two ends of which are respectively connected to the lower parts of the first upper beam and the second upper beam, and are disposed near the counterweight wheel.

[0011] According to some embodiments of this application, the counterweight assembly further includes two dust covers, which are disposed above the counterweight rollers, and the two ends of the dust covers are respectively connected to the upper parts of the first upper plate beam and the second upper plate beam.

[0012] According to some embodiments of this application, the counterweight frame further includes a plurality of guide wheels and a plurality of oil cups, the guide wheels being rotatably disposed on the side clamping plate, and the oil cups being disposed on the side clamping plate adjacent to the guide wheels.

[0013] According to some embodiments of this application, the counterweight frame further includes a buffer plate and a buffer block, the buffer plate being connected to the lower surface of the lower beam, and one end of the buffer block being connected to the lower surface of the buffer plate. Attached Figure Description

[0014] The present application will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0015] Figure 1 This is a schematic diagram of the elevator counterweight traction system according to an embodiment of this application;

[0016] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle;

[0017] Figure 3 This is a schematic diagram of the structure of the heavy component in an embodiment.

[0018] Figure label:

[0019] Counterweight assembly 100; Counterweight frame 120; Upper beam 121; Lower beam 122; Side clamp 123; Counterweight block 124; Buffer block 125; Counterweight wheel 110; Wheel axle 111; Dust cover 112; Anti-detachment bracket 113; Track assembly 200; Base 300; Rope head assembly 310; Drive assembly 400; Drive motor 410; Traction sheave 420; Wire rope assembly 500. Detailed Implementation

[0020] The embodiments of this application are described in detail below. Examples of these 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 are only used to explain this application, and should not be construed as limiting this application.

[0021] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0022] In the description of this application, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0023] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0024] In the description of this application, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0025] like Figure 1As shown, the elevator counterweight traction system of this embodiment includes a counterweight assembly 100, a track assembly 200, a base 300, a drive assembly 400, and a wire rope assembly 500. The counterweight assembly 100 includes a counterweight frame 120 and two counterweight pulleys 110. The counterweight pulleys 110 are rotatably mounted on the top of the counterweight frame 120 via axles 111, and the two counterweight pulleys 110 are at the same horizontal height and symmetrically distributed with respect to the center line of the counterweight frame 120. The drive assembly 400 includes a drive motor 410 and a traction sheave 420. The drive motor 410 is mounted on the base 300, and the traction sheave 420 is connected to the drive end of the drive motor 410. The wire rope assembly 500 includes an even number of wire ropes, with half of the wire ropes wound around one counterweight pulley 110 and the other half wound around the other counterweight pulley 110, thus achieving a symmetrical arrangement of the traction ropes.

[0026] For example, during installation, the track assembly 200 is first vertically fixed or installed in the hoistway, allowing the counterweight frame 120 to move smoothly up and down on the track assembly 200. Then, a base 300 is erected above the track assembly 200 or at a reserved location on the machine room platform, and drive motors 410 and traction sheaves 420 are arranged in rows on the base 300. The number of wire ropes (must be even) is determined based on the elevator's load capacity and hoistway dimensions. One end of the wire rope is fixed to the base 300 or a corresponding component via the rope end assembly 310. The wire rope descends from the base 300, passes around the corresponding counterweight sheave 110, and then emerges and rises again in the middle area between the two counterweight sheaves 110, finally connecting with the traction sheave 420 to achieve elevator lifting and traction. Through this winding method, the traction rope's winding on the counterweight frame 120 is symmetrically distributed, ensuring that the counterweight frame 120 does not need to be offset against the hoistway sidewall.

[0027] Understandable, such as Figure 2 and Figure 3As shown, the counterweight frame 120 further includes counterweight blocks 124, two parallel side plates 123, an upper beam 121, and a lower beam 122. Several counterweight blocks 124 are arranged vertically between the two side plates 123. The number of counterweight blocks 124 can be selected according to the elevator's rated load and balance coefficient, and they are sequentially inserted vertically between the two side plates 123 of the counterweight frame 120 from bottom to top or from top to bottom, so that their ends are tightly attached, inserted, or embedded in the inner surface of the side plates 123. The two side plates 123 are parallel to each other and located on the left and right sides of the counterweight blocks 124, respectively. Several through holes can be provided on the side plates 123 to simplify the fixing or guiding of the counterweight blocks 124 during installation. Additionally, positioning holes for mounting guide wheels and oil cups, etc., can also be provided on the side plates 123. The upper beam 121 is connected at both ends to the upper parts of the two side clamping plates 123, and the lower beam 122 is connected at both ends to the lower parts of the side clamping plates 123, thus forming the basic frame structure of the counterweight frame 120. The upper beam 121 can be manufactured by splicing or integral rolling, which facilitates the fixing of the axle 111 of the counterweight wheel 110; similarly, the lower beam 122 is used to bear the weight of the counterweight block 124. The two counterweight wheels 110 are mounted on the upper beam 121 through corresponding axles 111. The ends of the axles 111 of the counterweight wheels 110 can be directly fixed to the upper beam 121, or they can be installed with the help of supports, bearings or other fasteners to ensure that the axles 111 maintain sufficient strength and stability when rotating. The centers of symmetry of the two counterweight rollers 110 should coincide with the center line of the upper beam 121 as much as possible, so that the wire rope can pass through the middle area of ​​the counterweight frame 120 after passing around, thus meeting the requirement of symmetrical arrangement of the counterweight rollers 110 and the wire rope winding.

[0028] Furthermore, such as Figure 2 As shown ( Figure 2 (The counterweight roller is shown in the perspective image). The upper beam 121 may include a first upper beam and a second upper beam arranged opposite each other, and the counterweight roller 110 is installed between the two upper beams 121. The first upper beam and the second upper beam are placed on the upper part of the counterweight frame 120 in a parallel manner, and their respective ends are connected to the inner or outer side of the side clamping plate 123. Normally, a forming hole or a welded ear plate can be reserved at the top of the side clamping plate 123 to fix the first upper beam and the second upper beam respectively; they can also be firmly connected by bolts, rivets or welding. The first upper beam and the second upper beam form an installation space to accommodate the counterweight roller 110, which can facilitate the installation of the axle 111 and make it easier to disassemble or inspect the counterweight roller 110 during subsequent maintenance. The counterweight roller 110 is located between the first upper beam and the second upper beam ( Figures 1 to 3The counterweight rollers are partially transparent, and the two ends of the roller axle 111 are connected to the corresponding positions of the two upper plate beams 121 or supported by bearing seats. This not only improves the installation firmness of the roller axle 111, but also facilitates the use of the two upper plate beams 121 to provide good protection for the counterweight rollers 110. Since the center of symmetry of the two counterweight rollers 110 is located at the top center of the counterweight frame 120, the wire rope passes through the counterweight rollers 110 and then passes upwards, ensuring that the traction end can be located near the centerline of the counterweight frame 120 to the maximum extent. Combined with the installation positions of the base 300 and the traction sheave 420, centralized drive is achieved in narrow shafts.

[0029] Understandable, such as Figure 3 As shown, the elevator counterweight traction system in this embodiment can also be configured with several additional components as needed to enhance the safety and stability of the elevator during operation. These components include anti-detachment brackets 113, dust covers 112, guide wheels, oil cups, rope end assemblies 310, and buffer plates and buffer blocks 125, etc.

[0030] When the counterweight frame 120 uses a clamping method between the first upper beam and the second upper beam to install the counterweight wheel 110, several anti-detachment brackets 113 are usually added to the surrounding area of ​​the space where the counterweight wheel 110 is located. The two ends of the anti-detachment brackets 113 are connected to the lower or side ends of the first upper beam and the second upper beam, respectively, and are symmetrically distributed in a "U" or "arch" shape near the counterweight wheel 110. When the elevator operating environment is bumpy or the wire rope is shaken due to external forces, the anti-detachment brackets 113 can effectively prevent the wire rope from jumping out of the groove of the counterweight wheel 110.

[0031] To protect the counterweight sheave 110 and the wire rope, two dust covers 112 can be installed above or to the side of the counterweight sheave 110. These dust covers 112 can be thin metal plates or high-strength composite material plates, and are connected to the upper parts of the first and second upper beams respectively by bolts, welding, or other methods. During long-term use of the hoistway, dust or other lightweight particles can easily fall between the counterweight sheave 110 and the wire rope, potentially causing wear on the wire rope; installing dust covers 112 can effectively block or reduce dust accumulation.

[0032] Similarly, if the counterweight frame 120 needs to maintain a more stable contact with the elevator guide rail during lifting, several guide wheels (usually small-diameter rolling wheels) can be rotatably installed on the side clamping plate 123. The guide wheels can be located on the outer or inner edge of the side clamping plate 123, making parallel contact with the side of the elevator guide rail to further reduce the swaying or offset of the counterweight frame 120 during operation. Near the guide wheels, several oil cups (or grease boxes) can be installed to lubricate the guide wheels or the contact surfaces of adjacent guide rails and the side clamping plate 123. The oil cups or reservoirs are fixed on the side clamping plate 123, and lubricating oil is delivered to the bearing of the guide wheel shaft 111 through an oil filler or oil pipe.

[0033] One end of the wire rope is fixed to the base via a rope end assembly 310, which includes a rope end connecting rod, a buffer spring, a locking nut, and a rope end cone sleeve. A through hole is pre-drilled in the base for the rope end connecting rod to pass vertically through. The rope end connecting rod is typically made of alloy steel or high-strength metal to withstand the tension generated by the wire rope during operation. The bottom of the rope end connecting rod passes through the through hole in the base, with its top protruding a certain length above the base for installing the buffer spring and locking nut. After the rope end connecting rod passes through the base, the buffer spring is fitted from top to bottom onto the exposed portion of the rope end connecting rod above the base; then, the locking nut is screwed onto the threaded section formed by the top of the rope end connecting rod. The lower end face of the buffer spring rests against the upper surface of the base, while the upper end face of the spring is in close contact with the locking nut. When the locking nut is tightened clockwise, the buffer spring is compressed, which absorbs energy when the traction system experiences significant impact or vibration, thus mitigating the impact force of instantaneous loads on the rope end connection. Loosening the locking nut releases some of the spring force, allowing maintenance personnel to fine-tune the wire rope tension during installation or maintenance. At the bottom of the rope end connecting rod, it is securely connected to one end of the rope end cone sleeve using bolts, welding, or pins; the other end of the rope end cone sleeve is fixed to the wire rope using common tapered insertion or crimping techniques. This ensures that the cone sleeve does not easily loosen during high-speed lifting or frequent starts and stops, while also allowing the traction force of the wire rope to be smoothly transmitted to the rope end connecting rod.

[0034] The lower part of the counterweight frame 120 is usually connected to the lower beam 122. A buffer plate can be installed on the lower surface of the lower beam 122, and buffer blocks 125 are correspondingly installed below the buffer plate or at the bottom of the shaft pit. The buffer plate is one or more pieces of metal or elastic plate with a certain energy absorption and shock absorption function, which contacts the lower beam 122 of the counterweight frame 120 and is fixed by bolts or welding. The buffer blocks 125 can be spring-type or hydraulic structure. When the counterweight frame 120 experiences excessive descent in extreme cases, the buffer blocks 125 can contact the buffer plate and play a certain role in shock absorption and cushioning.

[0035] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application. Furthermore, unless otherwise specified, the embodiments and features described in the embodiments of this application can be combined with each other.

Claims

1. An elevator counterweight hoisting system, characterized in that The utility model relates to a kind of hoist, including: Pair of components, the pair of components includes pair of frame and two pair of wheels, pair of wheels is rotatably mounted respectively on the top of the pair of frame by axle, and two the pair of wheels are at the same horizontal height and symmetrically distributed relative to the center line of the pair of frame; Track assembly for guiding the up-and-down movement of the pair of component assemblies; Machine base, the machine base is arranged above the track assembly; Driving assembly, the driving assembly includes driving motor and traction wheel, the driving motor is arranged on the machine base, and the traction wheel is connected with the driving end of the driving motor; Steel wire rope assembly, the steel wire rope assembly includes an even number of steel wire ropes, half of the number of the steel wire ropes are wound on one of the pair of wheels, and the other half of the number of the steel wire ropes are wound on the other of the pair of wheels, one end of the steel wire rope is fixed to the machine base through a rope head assembly, and the steel wire rope passes through the middle area between the two pair of wheels after winding around the corresponding pair of wheels and is connected with the traction wheel.

2. The elevator counterweight arch draw system of claim 1, wherein, The traction wheel is arranged directly above the symmetric center of the two pair of wheels.

3. The elevator counterweight roping system according to any of claims 1 and 2, characterized in that, The pair of frame includes pair of block, two parallelly arranged side clamping plates, upper plate beam and lower plate beam, the two ends of the upper plate beam are connected with the upper portions of the two side clamping plates respectively, the two ends of the two lower plate beams are connected with the lower portions of the side clamping plates respectively, the pair of block is provided with a plurality of and arranged sequentially in vertical direction between the two side clamping plates, the two ends of the pair of block are inserted into the two side clamping plates respectively, the axles of the two pair of wheels are connected with the upper plate beam, and the symmetric centers of the two pair of wheels are located at the center of the upper plate beam.

4. The elevator counterweight arch hoisting system of claim 3, wherein, The upper plate beam includes oppositely arranged first upper plate beam and second upper plate beam, the two ends of the first upper plate beam are connected with one side of the two side clamping plates respectively, the two ends of the second upper plate beam are connected with the other side of the two side clamping plates respectively, the pair of wheel is arranged between the first upper plate beam and the second upper plate beam, and the two ends of the axle of the pair of wheel are connected with the first upper plate beam and the second upper plate beam respectively.

5. The elevator counterweight arch hoisting system of claim 4, wherein, The pair of component assemblies further include a plurality of anti-disengagement supports, the two ends of the anti-disengagement supports are connected with the lower portions of the first upper plate beam and the second upper plate beam respectively, and are arranged adjacent to the pair of wheels.

6. The elevator counterweight arch drag system of claim 4, wherein, The pair of component assemblies further include two dust covers, the dust covers are arranged above the pair of wheels, and the two ends of the dust covers are connected with the upper portions of the first upper plate beam and the second upper plate beam respectively.

7. The elevator counterweight arch drag system of claim 3, wherein, The pair of frame further includes a plurality of guide wheels and a plurality of oil cups, the guide wheels are rotatably arranged on the side clamping plates, and the oil cups are arranged on the side clamping plates adjacent to the guide wheels.

8. The elevator counterweight arch drag system of claim 3, wherein, The pair of frame further includes a buffer plate and a buffer block, the buffer plate is connected with the lower surface of the lower plate beam, and one end of the buffer block is connected with the lower surface of the buffer plate.

9. The elevator counterweight arch drag system of claim 1, wherein, The rope head assembly comprises a rope head connecting rod, a buffer spring, a locking nut and a rope head taper sleeve, the rope head connecting rod is arranged in the base and a threaded section is formed at the top, the locking nut is screwed with the threaded section, the buffer spring is arranged around the area above the base of the rope head connecting rod, and the two ends of the buffer spring respectively abut the upper surface of the base and the locking nut, one end of the rope head taper sleeve is connected with the bottom of the rope head connecting rod, and the other end is connected with the steel wire rope.

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