Elevator traction system and elevator

Abstract

The elevator traction system comprises a traction device, a counterweight device and a traction rope, the traction device comprises a supporting frame, a counterweight diversion sheave assembly and a traction machine, the counterweight diversion sheave assembly and the traction machine are both arranged on the supporting frame, the counterweight device and the supporting frame are arranged in a spaced mode in the first direction, and the traction rope is arranged in the second direction. The counterweight device comprises a counterweight body and a counterweight wheel assembly, the counterweight wheel assembly comprises N counterweight wheels, the N counterweight wheels are arranged on the counterweight body at intervals in the second direction, the axial direction of the M counterweight wheels is parallel to the second direction, the axial direction of the N-M counterweight wheels is parallel to the third direction, M is larger than or equal to 1 and smaller than or equal to N-2, N is larger than or equal to 3, and the first direction, the second direction and the third direction are perpendicular to one another. And one end of the hoisting rope is fixedly connected with the supporting frame, and the other end of the hoisting rope passes through the counterweight wheel assembly and the counterweight diversion sheave assembly and is led out from a corresponding counterweight wheel of which the axial direction is parallel to the second direction in the counterweight wheel assembly so as to be connected with a traction machine. Therefore, the space occupation of the counterweight device in the second direction can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator traction, in particular to an elevator traction system and an elevator. Background Art

[0002] With the progress of society and the continuous development of industry, large-tonnage freight elevators are being used more and more widely. For large-tonnage freight elevators, in order to use smaller lifting force to lift larger cars and cargo weights, elevator traction systems with high traction ratios are usually used.

[0003] However, in some elevator car application scenarios where the elevator is wide and shallow, the existing elevator traction system cannot be installed due to the size limitation of the elevator shaft, making it difficult to meet the use requirements of the elevator with a shallow depth. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the first object of the present invention is to provide an elevator traction system in which the axial directions of M of N counterweight wheels are arranged parallel to the second direction, and the axial directions of the remaining counterweight wheels are arranged parallel to the third direction. This reduces the arrangement size of the counterweight wheels in the second direction, thereby facilitating a reduction in the space occupied by the counterweight device in the second direction, thereby meeting the requirement for a shallow elevator.

[0005] The second purpose of the present invention is to provide an elevator.

[0006] To achieve the above-mentioned objectives, the first embodiment of the present invention provides an elevator traction system, comprising:

[0007] The traction device includes a support frame, a counterweight return rope pulley assembly and a traction machine, and the counterweight return rope pulley assembly and the traction machine are both arranged on the support frame;

[0008] A counterweight device is spaced apart from the support frame along a first direction, the counterweight device includes a counterweight body and a counterweight wheel assembly, the counterweight wheel assembly includes N counterweight wheels, the N counterweight wheels are spaced apart from the counterweight body along a second direction, the axes of the M counterweight wheels are parallel to the second direction, and the axes of the NM counterweight wheels are parallel to the third direction, wherein 1≤M≤N-2, N≥3, and the first direction, the second direction, and the third direction are perpendicular to each other;

[0009] The traction rope has one end fixedly connected to the support frame, and the other end passes through the counterweight wheel assembly and the counterweight return rope wheel assembly, and is led out from the corresponding counterweight wheel in the counterweight wheel assembly whose axial direction is parallel to the second direction to be connected to the traction machine.

[0010] According to the elevator traction system of the embodiment of the present invention, the axial directions of M of the N counterweight wheels are set to be parallel to the second direction, and the axial directions of the remaining counterweight wheels are set to be parallel to the third direction, thereby reducing the arrangement size of the counterweight wheels in the second direction, which is beneficial to reducing the space occupied by the counterweight device in the second direction, and thus meeting the use requirement of a shallow depth of the elevator.

[0011] According to some examples of the present invention, the counterweight body has a symmetry center line parallel to the first direction, and the N counterweight wheels are symmetrically arranged on the counterweight body relative to the symmetry center line.

[0012] According to some examples of the present invention, the counterweight return pulley assembly includes N counterweight return pulleys, which are arranged on the support frame at intervals along the second direction, wherein the axial directions of the M counterweight return pulleys have an angle with the second direction, the axial directions of the NM counterweight return pulleys are parallel to the third direction, and each counterweight return pulley whose axial direction has an angle with the second direction is arranged between the corresponding adjacent two counterweight pulleys along the second direction, so that the two ends of each counterweight return pulley whose axial direction has an angle with the second direction coincide with the centers of the corresponding ends of the corresponding two adjacent counterweight pulleys along the first direction.

[0013] According to some examples of the present invention, the counterweight assembly includes: a first counterweight, a second counterweight and a third counterweight, wherein the second counterweight is arranged between the first counterweight and the third counterweight along the second direction, wherein the axial direction of the second counterweight is parallel to the second direction, and the traction rope is led out from the second counterweight and connected to the traction machine.

[0014] According to some examples of the present invention, the counterweight back pulley assembly includes a first counterweight back pulley, a second counterweight back pulley and a third counterweight back pulley arranged in sequence along the second direction, the axial direction of the first counterweight back pulley and the axial direction of the third counterweight back pulley are parallel to the third direction, the axial direction of the second counterweight back pulley has an angle with the second direction, and along the second direction, the second counterweight back pulley is arranged between the second counterweight pulley and the third counterweight pulley, so that one end of the second counterweight back pulley coincides with the center of one end of the second counterweight pulley along the first direction, and the other end of the second counterweight back pulley coincides with the center of one end of the third counterweight pulley close to the second counterweight pulley along the first direction.

[0015] According to some examples of the present invention, the counterweight back pulley assembly includes a first counterweight back pulley, a second counterweight back pulley and a third counterweight back pulley which are arranged in sequence along the second direction, the axial direction of the first counterweight back pulley and the axial direction of the third counterweight back pulley are parallel to the third direction, the axial direction of the second counterweight back pulley has an angle with the second direction, and along the second direction, the second counterweight back pulley is arranged between the first counterweight pulley and the second counterweight pulley, so that one end of the second counterweight back pulley coincides with the center of one end of the second counterweight pulley along the first direction, and the other end of the second counterweight back pulley coincides with the center of one end of the first counterweight pulley close to the second counterweight pulley along the first direction.

[0016] According to some examples of the present invention, along the second direction, the center distance between the first counterweight pulley and the third counterweight pulley is equal to the center distance between the first counterweight return pulley and the third counterweight return pulley.

[0017] According to some examples of the present invention, the traction machine is arranged corresponding to the middle portion of the counterweight body along the second direction.

[0018] According to some examples of the present invention, the traction machine is spaced apart from the counterweight return pulley assembly along the third direction, and the axial direction of the traction machine is parallel to the second direction.

[0019] According to some examples of the present invention, the traction device also includes: a guide wheel, which is arranged on a support frame, and is arranged between the counterweight wheel assembly and the traction machine along the first direction, and the axial direction of the guide wheel is parallel to the second direction. After the traction rope is led out from the corresponding counterweight wheel whose axial direction is parallel to the second direction, it is connected to the traction machine through the guide wheel.

[0020] To achieve the above-mentioned object, a second embodiment of the present invention provides an elevator, comprising the elevator traction system of the first embodiment.

[0021] According to the elevator of the embodiment of the present invention, by setting the above-mentioned elevator traction system, the axial directions of M counterweight wheels out of N counterweight wheels are set to be parallel to the second direction, and the axial directions of the remaining counterweight wheels are set to be parallel to the third direction, thereby reducing the arrangement size of the counterweight wheels in the second direction, which is beneficial to reducing the space occupied by the counterweight device in the second direction, and thus meeting the use requirement of a shallow depth of the elevator.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0024] Figure 1Schematic diagram of the structure of an elevator traction system according to one embodiment of the present invention;

[0025] Figure 2 yes Figure 1 Front view of

[0026] Figure 3 This is a structural diagram of a traction rope passing through a counterweight pulley assembly, a counterweight return pulley assembly, and a traction machine according to one embodiment of the utility model;

[0027] Figure 4 yes Figure 3 Front view of

[0028] Figure 5 1 is a schematic structural diagram of an elevator according to an embodiment of the present invention;

[0029] Figure 6 This is a structural schematic diagram of a traction rope passing through a counterweight pulley assembly, a counterweight return pulley assembly, a car return pulley assembly, a car top pulley assembly and a traction machine according to an embodiment of the present invention.

[0030] Reference numerals:

[0031] Elevator traction system 10;

[0032] Traction device 1; support frame 11; first beam 111; second beam 112; counterweight return pulley assembly 12; first counterweight return pulley 121; second counterweight return pulley 122; third counterweight return pulley 123; traction machine 13; guide pulley 14; car return pulley assembly 15; first car return pulley 151; second car return pulley 152; third car return pulley 153; fourth car return pulley 154;

[0033] Counterweight device 2; counterweight body 21; first side A; second side B; counterweight wheel assembly 22; first counterweight wheel 221; second counterweight wheel 222; third counterweight wheel 223;

[0034] Tow rope 3;

[0035] Elevator 100; car device 40; car body 41; car top wheel assembly 42; first car top wheel 421; second car top wheel 422; third car top wheel 423;

[0036] First direction X; second direction Y; third direction Z. DETAILED DESCRIPTION

[0037] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0038] The thickness of the counterweight wheel in the present application in the axial direction is smaller than the diameter, that is, the thickness of the counterweight wheel is smaller than the diameter of the counterweight wheel. The depth direction mentioned in the present application refers to the direction perpendicular to the elevator door, that is, the depth direction of the car body. The shallow shaft mentioned in the present application refers to an elevator shaft with smaller dimensions in the depth direction and width direction. The first direction mentioned in the present application is the direction of gravity, and the second direction mentioned in the present application is perpendicular to the first direction, wherein the second direction is the depth direction of the car body.

[0039] It should be noted that in some elevator car application scenarios with a larger width and a shallower depth, due to the size limitation of the elevator shaft, such as for shallow shaft elevators, the existing structure of the elevator traction system cannot be installed, making it difficult to meet the use requirements of the elevator with a shallow depth.

[0040] Based on this, the present application proposes an elevator traction system 10, which sets the axial directions of M of the N counterweight wheels to be parallel to the second direction Y, and the axial directions of the remaining counterweight wheels to be parallel to the third direction Z, thereby reducing the arrangement size of the counterweight wheels in the second direction Y, thereby helping to reduce the space occupied by the counterweight device 2 in the second direction Y, and thus meeting the use requirements of the elevator 100 with a shallow depth.

[0041] The following describes an elevator traction system 10 and an elevator 100 according to an embodiment of the present invention with reference to the accompanying drawings.

[0042] like Figures 1-6 As shown, the elevator traction system 10 according to the embodiment of the first aspect of the present invention includes: a traction device 1, a counterweight device 2 and a traction rope 3.

[0043] Among them, the traction device 1 includes a support frame 11, a counterweight return pulley assembly 12 and a traction machine 13. The counterweight return pulley assembly 12 and the traction machine 13 are both arranged on the support frame 11. The counterweight device 2 is spaced apart from the support frame 11 along the first direction X. The counterweight device 2 includes a counterweight body 21 and a counterweight wheel assembly 22. The counterweight wheel assembly 22 includes N counterweight wheels. The N counterweight wheels are spaced apart on the counterweight body 21 along the second direction Y. The axial directions of the M counterweight wheels are parallel to the second direction Y, and the axial directions of the NM counterweight wheels are parallel to the third direction Z. Among them, 1≤M≤N-2, N≥3, the first direction X, the second direction Y, and the third direction Z are perpendicular to each other. One end of the traction rope 3 is fixedly connected to the support frame 11, and the other end passes through the counterweight wheel assembly 22 and the counterweight return pulley assembly 12, and is led out from the corresponding counterweight wheel in the counterweight wheel assembly 22 whose axial direction is parallel to the second direction Y to be connected to the traction machine 13.

[0044] Specifically, if Figure 1 As shown, the support frame 11 is constructed as a T-shaped structure consisting of a first beam 111 and a second beam 112, wherein the first beam 111 extends along the second direction Y, and the second beam 112 extends along the third direction Z. Furthermore, the counterweight return pulley assembly 12 and the traction machine 13 are respectively arranged on the first beam 111 and the second beam 112.

[0045] Along the first direction X, the support frame 11 is spaced apart from the counterweight device 2. The counterweight device 2 includes a counterweight body 21 and a counterweight pulley assembly 22. The counterweight body 21 has two opposite sides along the second direction Y, namely a first side A and a second side B. The counterweight pulley assembly 22 is disposed on the counterweight body 21. Further, the counterweight pulley assembly 22 includes N counterweight pulleys, where N ≥ 3. That is, the counterweight pulley assembly 22 includes a plurality of counterweight pulleys. The number of counterweight pulleys is greater than or equal to 3 and is set according to the traction ratio required by the elevator traction system 10. Optionally, the number of counterweight pulleys can be three, four, five, six, eight, nine, ten, etc., and this application does not impose any specific limitation on this.

[0046] Furthermore, the axial directions of M of the N counterweight wheels are set to be parallel to the second direction Y, and the axial directions of the remaining NM counterweight wheels are set to be parallel to the third direction Z, wherein 1≤M≤N-2. For example, assuming that the counterweight wheel assembly 22 includes three counterweight wheels, the axial direction of one of the counterweight wheels is set to be parallel to the second direction Y, and the axial directions of the remaining two counterweight wheels are set to be parallel to the third direction Z. Assuming that the counterweight wheel assembly 22 includes four counterweight wheels, the axial direction of one or two of the counterweight wheels can be set to be parallel to the second direction Y, and the axial direction of the remaining counterweight wheels is set to be parallel to the third direction Z. Preferably, in order to maintain the symmetrical design of the counterweight device 2, two counterweight wheels with axial directions parallel to the second direction Y and two counterweight wheels with axial directions parallel to the third direction Z can be selected respectively. For the case where the counterweight wheel assembly 22 includes more counterweight wheels, examples will not be given one by one here.

[0047] Furthermore, one end of the traction rope 3 is fixedly connected to the first beam 111 of the support frame 11, and the other end is led out from the corresponding counterweight wheel in the counterweight wheel assembly 22, which is axially parallel to the second direction Y, after passing through the counterweight return rope pulley assembly 22 and the counterweight return rope pulley assembly 12, to be connected to the traction machine 13. The traction rope 3 driven by the traction machine 13 can drive the counterweight device 2 to rise or fall as a whole. Compared with the prior art, the counterweight wheels are all axially parallel to the third direction Z, that is, the diameter of the counterweight wheels is parallel to the third direction Z. In this application, the axial direction of some counterweight wheels is set to be parallel to the second direction Y, so that the arrangement size of the counterweight wheels in the second direction Y can be reduced. When the counterweight wheels are arranged on the counterweight body 21 in sequence along the second direction Y, the space occupied by the counterweight device 2 in the second direction Y can be reduced as much as possible. That is to say, the counterweight device 2 can be arranged on a car with a shallower depth to meet the shallower use requirements of the elevator 100.

[0048] According to the elevator traction system 10 of the embodiment of the present invention, the axial directions of M counterweight wheels out of N counterweight wheels are set to be parallel to the second direction Y, and the axial directions of the remaining counterweight wheels are set to be parallel to the third direction Z, thereby reducing the arrangement size of the counterweight wheels in the second direction Y, which is beneficial to reducing the space occupied by the counterweight device 2 in the second direction Y, thereby meeting the use requirement of the elevator 100 with a shallow depth.

[0049] It should be noted that the position where the traction rope 3 is led out from the counterweight assembly 22 whose axial direction is parallel to the second direction Y to the traction machine 13 can be located between the first side A and the second side B of the counterweight body 21. That is to say, at least a part of the traction machine 13 can be set between the first side A and the second side B of the counterweight assembly 22, thereby reducing the size of the elevator traction system 10 in the second direction Y, thereby reducing the space occupied by the counterweight device 2 in the second direction Y.

[0050] In some embodiments of the present invention, Figures 1-6 As shown, the counterweight body 21 has a symmetry center line parallel to the first direction X, and N counterweight wheels are symmetrically arranged on the counterweight body 21 relative to the symmetry center line.

[0051] Specifically, the counterweight body 21 is constructed as a central symmetrical structure, wherein the counterweight body 21 has a symmetry center line parallel to the first direction X. Further, as shown in FIG. Figure 2-Figure 4 As shown, the N counterweights in the counterweight assembly 22 are spaced apart along the second direction Y and symmetrically arranged on the counterweight body 21 relative to the center line of symmetry, that is, the M counterweights whose axes are parallel to the second direction Y and the NM counterweights whose axes are parallel to the third direction Z are all symmetrically arranged relative to the center line of symmetry.

[0052] For example, assuming that the counterweight assembly 22 includes three counterweights, the axial direction of one of the counterweights is set to be parallel to the second direction Y, and the axial directions of the other two counterweights are set to be parallel to the third direction Z. It can be understood that the counterweight whose axial direction is parallel to the second direction Y is arranged between the two counterweights whose axial direction is parallel to the third direction Z, and the two counterweights whose axial direction is parallel to the third direction Z are symmetrically arranged on the counterweight body 21 relative to the symmetry center line, and the counterweight whose axial direction is parallel to the second direction Y is parallel to the symmetry center line at the symmetry center of the first direction X.

[0053] Assuming that the counterweight assembly 22 includes four counterweights, in order to ensure the symmetrical setting of the counterweight device 2, the axial directions of two of the counterweights are set to be parallel to the second direction Y, and the axial directions of the remaining two counterweights are set to be parallel to the third direction Z. It can be understood that the two counterweights whose axial directions are parallel to the second direction Y can be set between the two counterweights whose axial directions are parallel to the third direction Z, or the two counterweights whose axial directions are parallel to the third direction Z can be set between the two counterweights whose axial directions are parallel to the second direction Y. No specific restrictions are made here. Furthermore, the two counterweights whose axial directions are parallel to the third direction Z are symmetrically arranged on the counterweight body 21 relative to the center line of symmetry, and the two counterweights whose axial directions are parallel to the second direction Y are symmetrically arranged on the counterweight body 21 relative to the center line of symmetry.

[0054] Assuming that the counterweight assembly 22 includes five counterweights, in order to ensure the symmetrical arrangement of the counterweight device 2, the axial directions of one or three counterweights are arranged to be parallel to the second direction Y, and the axial directions of the remaining counterweights are arranged to be parallel to the third direction Z. It can be understood that when the axial direction of one counterweight is arranged to be parallel to the second direction Y, the axial directions of the remaining four counterweights are arranged to be parallel to the third direction Z, the four counterweights whose axial directions are parallel to the third direction Z are arranged to be spaced in sequence in the second direction Y and are symmetrically arranged on the counterweight body 21 relative to the symmetry center line, and the counterweights whose axial directions are parallel to the second direction Y are parallel to the symmetry center line in the first direction X; when the axial directions of three counterweights are arranged to be parallel to the second direction Y, the axial directions of the remaining two counterweights are arranged to be parallel to the third direction Z, the two counterweights whose axial directions are parallel to the third direction Z are symmetrically arranged on the counterweight body 21 relative to the symmetry center line, the three counterweights whose axial directions are parallel to the second direction Y are arranged between the two counterweights whose axial directions are parallel to the third direction Z, and the three counterweights whose axial directions are parallel to the second direction Y are symmetrically arranged on the counterweight body 21 relative to the symmetry center line.

[0055] For the case where the counterweight wheel assembly 22 includes more counterweight wheels, this application will not give examples one by one.

[0056] Therefore, the counterweight body 21 is constructed as a symmetrical structure, and N counterweight wheels are symmetrically arranged on the counterweight body 21 relative to the symmetry center line of the counterweight body 21, which can ensure the overall symmetrical design of the counterweight device 2, so that the center of gravity of the counterweight device 2 is parallel to the symmetry center line of the counterweight body 21, thereby avoiding gravity offset during the overall lifting and lowering process of the counterweight device 2.

[0057] In some embodiments of the present invention, Figures 1-6 As shown, the counterweight return pulley assembly 12 includes N counterweight return pulleys, which are arranged on the support frame 11 at intervals along the second direction Y, wherein the axial directions of the M counterweight return pulleys have an angle with the second direction Y, the axial directions of the NM counterweight return pulleys are parallel to the third direction Z, and each counterweight return pulley whose axial direction has an angle with the second direction Y is arranged between two corresponding adjacent counterweight pulleys along the second direction Y, so that the two ends of each counterweight return pulley whose axial direction has an angle with the second direction Y coincide with the centers of the corresponding ends of the two corresponding adjacent counterweight pulleys along the first direction X.

[0058] Specifically, the counterweight return pulley assembly 12 includes N counterweight return pulleys, which are used to change the direction of the traction rope 3. The number of counterweight return pulleys is greater than or equal to 3 and is set according to the traction ratio required by the elevator traction system 10. Optionally, the number of counterweight return pulleys can be three, four, five, six, eight, nine, ten, etc., which is not specifically limited in this application, and each counterweight return pulley corresponds to a counterweight pulley.

[0059] Furthermore, the axial directions of M of the N counterweight return pulleys are arranged to be parallel to the second direction Y, and the axial directions of the remaining NM counterweight return pulleys are arranged to be parallel to the third direction Z. It can be understood that the NM counterweight pulleys arranged axially parallel to the third direction Z correspond one-to-one to the NM counterweight return pulleys arranged axially parallel to the third direction Z, and the M counterweight pulleys whose axial directions are parallel to the second direction Y correspond to the M counterweight return pulleys whose axial directions are parallel to the second direction Y. Among them, each counterweight return pulley whose axial direction has an included angle with the second direction Y is arranged between corresponding two adjacent counterweight pulleys along the second direction Y, so that the two ends of each counterweight return pulley whose axial direction has an included angle with the second direction Y respectively coincide with the centers of corresponding one ends of corresponding two adjacent counterweight pulleys along the first direction X.

[0060] For example, assuming that the counterweight wheel assembly 22 includes three counterweight wheels, the axial direction of one counterweight wheel is set to be parallel to the second direction Y, the axial directions of the other two counterweight wheels are set to be parallel to the third direction Z, and the counterweight wheel with the axial direction parallel to the second direction Y is set between the two counterweight wheels with the axial direction parallel to the third direction Z. Accordingly, the counterweight return rope wheel assembly 12 includes three counterweight return rope wheels, the axial direction of one counterweight return rope wheel is set to have an angle with the second direction Y, the axial directions of the other two counterweight return rope wheels are set to be parallel to the third direction Z, and the counterweight return rope wheels with the axial direction having an angle with the second direction Y are set between the two counterweight return rope wheels with the axial direction parallel to the third direction Z. The counterweight return pulley 22 is located between the counterweight return pulleys axially parallel to the second direction Y and the counterweight return pulley axially parallel to the third direction Z. One end of the counterweight return pulley axially parallel to the second direction Y coincides with the center of one end of the counterweight axially parallel to the second direction Y, and the other end coincides with the center of one end of the counterweight axially parallel to the third direction Z, thereby changing the direction of the traction rope 3 and guiding the traction rope 3 passing through the counterweight axially parallel to the second direction Y to the counterweight axially parallel to the third direction Z, thereby realizing the circular arrangement of the traction rope 3 and reducing space occupation. It should be noted that for the case where the counterweight assembly 22 includes more counterweights, this application will no longer give examples one by one.

[0061] In some embodiments of the present invention, Figure 2-Figure 4 As shown, the counterweight assembly 22 includes: a first counterweight 221, a second counterweight 222 and a third counterweight 223. Along the second direction Y, the second counterweight 222 is arranged between the first counterweight 221 and the third counterweight 223, wherein the axial direction of the second counterweight 222 is parallel to the second direction Y, and the traction rope 3 is led out from the second counterweight 222 and connected to the traction machine 13.

[0062] Specifically, if Figure 2As shown, the counterweight wheel assembly 22 includes a first counterweight wheel 221, a second counterweight wheel 222 and a third counterweight wheel 223 which are sequentially arranged in the second direction Y. The axial directions of the first counterweight wheel 221 and the third counterweight wheel 223 are parallel to the third direction Z, and the first counterweight wheel 221 and the third counterweight wheel 223 are located in the same vertical plane and at the same height. The axial direction of the second counterweight wheel 222 is parallel to the second direction Y. Furthermore, the first counterweight wheel 221 is arranged near On the first side A of the counterweight body 21, the third counterweight pulley 223 is disposed near the second side B of the counterweight body 21, and the second counterweight pulley 222 is disposed between the first counterweight pulley 221 and the third counterweight pulley 223. Optionally, the first counterweight pulley 221, the second counterweight pulley 222, and the third counterweight pulley 223 are symmetrical relative to the centerline of symmetry. Furthermore, the traction rope 3 passes through the counterweight pulley assembly 22 and the counterweight return pulley assembly 12 in sequence, then exits the second counterweight pulley 222 to connect to the traction machine 13. With this arrangement, compared to conventional techniques in which all three counterweight pulleys are arranged with their axes parallel to the third direction Z, the axis of the second counterweight pulley 222 is arranged parallel to the second direction Y. This reduces the arrangement size of the three counterweight pulleys in the second direction Y, facilitating a reduction in the space occupied by the counterweight device 2 in the second direction Y, thereby satisfying the requirement for a shallow depth of the elevator 100.

[0063] In some embodiments of the present invention, Figure 2-Figure 4 As shown, the counterweight back pulley assembly 12 includes a first counterweight back pulley 121, a second counterweight back pulley 122 and a third counterweight back pulley 123 which are arranged in sequence along the second direction Y. The axial direction of the first counterweight back pulley 121 and the axial direction of the third counterweight back pulley 123 are parallel to the third direction Z. The axial direction of the second counterweight back pulley 122 has an angle with the second direction Y, and along the second direction Y, the second counterweight back pulley 122 is arranged between the second counterweight pulley 222 and the third counterweight pulley 223, so that one end of the second counterweight back pulley 122 coincides with the center of one end of the second counterweight pulley 222 along the first direction X, and the other end of the second counterweight back pulley 122 coincides with the center of one end of the third counterweight pulley 223 close to the second counterweight pulley 222 along the first direction X.

[0064] Specifically, if Figure 2As shown, along the first direction X, the counterweight return pulley assembly 12 and the counterweight wheel assembly 22 are spaced apart. When the counterweight wheel assembly 22 includes the first counterweight wheel 221, the second counterweight wheel 222 and the third counterweight wheel 223, the counterweight return pulley assembly 12 is correspondingly provided with the first counterweight return pulley 121, the second counterweight return pulley 122 and the third counterweight return pulley 123, wherein the first counterweight return pulley 121, the second counterweight return pulley 122 and the third counterweight return pulley 123 are all spaced in sequence along the second direction Y. Further, the first counterweight return pulley 121 is arranged near the first side A of the counterweight body 21, the third counterweight return pulley 123 is arranged near the second side B of the counterweight body 21, the first counterweight return pulley 121 and the third counterweight return pulley 123, the first counterweight wheel 221, the third counterweight wheel 22 3 are located in the same vertical plane, and the first counterweight return pulley 121 and the third counterweight return pulley 123 are located at the same height, the second counterweight return pulley 122 is arranged between the first counterweight return pulley 121 and the third counterweight return pulley 223, wherein the axial directions of the first counterweight return pulley 121 and the third counterweight return pulley 123 are parallel to the third direction Z, the axial direction of the second counterweight return pulley 122 has an included angle with the second direction Y, and along the second direction Y, the second counterweight return pulley 122 is arranged between the second counterweight pulley 222 and the third counterweight pulley 223. It can be understood that the included angle is adjustable according to the size of the second counterweight return pulley 122 and its position relative to the second counterweight pulley 222 and the third counterweight pulley 223. For example, the size of the included angle can be set to 30°, 45°, 60°, etc. Figure 3 As shown, one end of the second counterweight return pulley 122 coincides with the center of one end of the second counterweight pulley 222 along the first direction X, and the other end of the second counterweight return pulley 122 coincides with the center of one end of the third counterweight pulley 223 close to the second counterweight pulley 222 along the first direction X. With this arrangement, the traction rope 3 can be led out after passing through the first counterweight pulley 221, the first counterweight return pulley 121, the third counterweight return pulley 123, the third counterweight pulley 223, the second counterweight return pulley 122, and the second counterweight pulley 222 in sequence to be connected to the traction machine 13, thereby realizing the change in the direction of the traction rope 3 between the first counterweight pulley 221, the second counterweight pulley 222 and the third counterweight pulley 223, thereby reducing the lifting required to lift the weight of the car and the cargo.

[0065] In some embodiments of the present invention, Figure 2-Figure 4As shown, the counterweight back pulley assembly 12 includes a first counterweight back pulley 121, a second counterweight back pulley 122 and a third counterweight back pulley 123 which are arranged in sequence along the second direction Y. The axial directions of the first counterweight back pulley 121 and the third counterweight back pulley 123 are parallel to the third direction Z. The axial direction of the second counterweight back pulley 122 has an included angle with the second direction Y, and along the second direction Y, the second counterweight back pulley 122 is arranged between the first counterweight pulley 221 and the second counterweight pulley 222, so that one end of the second counterweight back pulley 122 coincides with the center of one end of the second counterweight pulley 222 along the first direction X, and the other end of the second counterweight back pulley 122 coincides with the center of one end of the first counterweight pulley 221 close to the second counterweight pulley 222 along the first direction X.

[0066] That is to say, along the second direction Y, the second counterweight return pulley 122 can also be arranged between the first counterweight pulley 221 and the second counterweight pulley 222, so that one end of the second counterweight return pulley 122 coincides with the center of one end of the second counterweight pulley 222 along the first direction X, and the other end of the second counterweight return pulley 122 coincides with the center of one end of the first counterweight pulley 221 close to the second counterweight pulley 222 along the first direction X. With this arrangement, the traction rope 3 can be led out through the third counterweight pulley 223, the third counterweight return pulley 123, the first counterweight return pulley 121, the first counterweight pulley 221, the second counterweight return pulley 122, and the second counterweight pulley 222 in sequence to be connected to the traction machine 13, thereby realizing the change in the direction of the traction rope 3 between the first counterweight pulley 221, the second counterweight pulley 222 and the third counterweight pulley 223, reducing the lifting required to lift the weight of the car and cargo.

[0067] It should be noted that, along the first direction X, the second counterweight return pulley 122 has a certain height difference relative to the first counterweight return pulley 121 and the third counterweight return pulley 123. This arrangement can avoid interference between the traction ropes 3 during the layout process. Furthermore, the elevator traction system 10 provided in the embodiment of the present application can be applied to, but not limited to, elevator traction systems 10 with the above-mentioned traction ratio. By further adding counterweight pulleys and counterweight return pulleys, the traction ratio can be expanded to a natural number greater than 6. For example, it can be expanded to elevator traction systems 10 with traction ratios such as 8:1, 10:1, and 12:1.

[0068] In some embodiments of the present invention, Figure 2-Figure 4 As shown, along the second direction Y, the center distance between the first counterweight pulley 221 and the third counterweight pulley 223 is equal to the center distance between the first counterweight return pulley 121 and the third counterweight return pulley 123.

[0069] Specifically, if Figure 2As shown, the first counterweight wheel 221, the third counterweight wheel 223, the first counterweight return rope pulley 121 and the third counterweight return rope pulley 123 are located in the same vertical plane, wherein the first counterweight wheel 221 is arranged corresponding to the first counterweight return rope pulley 121, and the second counterweight wheel 222 is arranged corresponding to the second counterweight return rope pulley 122. Further, the center distance between the first counterweight wheel 221 and the third counterweight wheel 223 is equal to the center distance between the first counterweight return rope pulley 121 and the third counterweight return rope pulley 123. Optionally, the diameters of the first counterweight wheel 221, the third counterweight wheel 223, the first counterweight return rope pulley 121 and the third counterweight return rope pulley 123 are equal. In this way, Along the second direction Y, it can be ensured that the width between the first counterweight pulley 221 and the third counterweight pulley 223 is equal to the width between the first counterweight return pulley 121 and the third counterweight return pulley 123, so that the traction rope 3 is arranged along the gravity direction between the first counterweight pulley 221 and the first counterweight return pulley 121 and the third counterweight pulley 223 and the third counterweight return pulley 123, which is beneficial to improving the lifting force of the traction machine 13. At the same time, since there is no axial angle between the first counterweight pulley 221 and the first counterweight return pulley 121 and the third counterweight pulley 223 and the third counterweight return pulley 123, the traction rope 3 is not easy to slip when passing through the corresponding counterweight return pulley or counterweight pulley.

[0070] In some embodiments of the present invention, Figure 1-Figure 5 As shown, the traction machine 13 is arranged corresponding to the middle portion of the counterweight body 21 along the second direction Y.

[0071] Specifically, along the second direction Y, the traction machine 13 and the counterweight body 21 are centered. Since the second direction Y is the depth direction of the car body 41, the traction machine 13 is arranged in the middle of the car body 41 along the depth direction of the car body 41, and the counterweight body 21 is also located in the middle of the car body 41. At this time, along the depth direction, the traction machine 13, the car body 41 and the counterweight body 21 are centered. Optionally, the center of the counterweight body 21 coincides with the center of the car body 41.

[0072] It should be noted that in the existing side-counterweight elevator traction system 10, when the traction machine 13 is located in the middle of the car along the depth direction of the car body 41, the counterweight device 2 is offset from the car centerline. In this structure, the traction machine 13 is located on one side of the counterweight pulley assembly 22 along the depth direction of the car. One end of the traction rope 3 is fixed to the other side of the counterweight pulley assembly 22 and is led out from the side corresponding to the traction machine 13 through the counterweight return pulley and the counterweight pulley to connect with the traction machine 13. The traction rope 3 extends unidirectionally in the depth direction and needs to be led out from the outermost counterweight pulley to connect with the traction machine 13. The traction machine 13 must be located corresponding to the outermost counterweight pulley. As a result, the dimensions of the elevator traction system 10 in the depth direction of the car body 41 include both the dimensions of the traction machine 13 and the counterweight pulley, resulting in a relatively large overall size. Especially in the elevator traction system 10 with a traction ratio of 6:1 or higher, the elevator traction system 10 with the above structure is larger in the depth direction of the car body 41, occupies a larger space, and cannot be applied to the shaft with a smaller size in the depth direction of the car body 41, and is even less applicable to the elevator 100 with a through door.

[0073] Therefore, when the number of counterweight wheels and counterweight return rope pulleys is constant, the counterweight body 21 and the traction machine 13 are centrally arranged, and the elevator traction system 10 occupies the smallest size in the depth direction of the car body 41 (i.e., the second direction Y), which is more suitable for elevators 100 with shallow shafts.

[0074] In some embodiments of the present invention, Figure 1 、 Figure 5 and Figure 6 As shown, the traction machine 13 is spaced apart from the counterweight return pulley assembly 12 along the third direction Z, and the axial direction of the traction machine 13 is parallel to the second direction Y.

[0075] Specifically, the traction machine 13 is spaced apart from the counterweight return pulley assembly 12 along the third direction Z. As a specific example, Figure 6 As shown, when the traction rope 3 is led out from the second counterweight wheel 222 to the traction machine 13, it is possible to avoid interference between the traction rope 3 led out from the second counterweight wheel 222 and the traction rope 3 between the first counterweight return rope wheel 121 and the third counterweight return rope wheel 123. Further, the axial direction of the traction machine 13 is parallel to the second direction Y. It can be understood that, as Figure 2-Figure 4As shown, the traction machine 13 and the second counterweight wheel 222 coincide with each other in the second direction Y, and the traction rope 3 is connected to the traction machine 13 after passing through the second counterweight wheel 222. The traction machine 13 provides traction for the traction rope 3. Under the action of the traction force, the traction rope 3 extends along the third direction Z or in a direction with an angle to the third direction Z. Since the axial direction of the traction machine 13 is parallel to the second direction Y, the traction rope 3 is wound around the axial direction of the traction machine 13 at the traction machine 13, so that the traction machine 13 can apply a lifting force to the second counterweight wheel 222 through the traction rope 3. At the same time, it can also prevent the traction rope 3 from slipping and falling off from the traction machine 13.

[0076] In some embodiments of the present invention, Figure 2-Figure 4 as well as Figure 6 As shown, the traction device 1 also includes: a guide wheel 14, which is arranged on the support frame 11. Along the first direction X, the guide wheel 14 is arranged between the counterweight assembly 22 and the traction machine 13, and the axial direction of the guide wheel 14 is parallel to the second direction Y. After the traction rope 3 is led out from the corresponding counterweight whose axial direction is parallel to the second direction Y, it is connected to the traction machine 13 through the guide wheel 14.

[0077] Specifically, if the traction rope 3 is directly led out from the corresponding counterweight wheel whose axial direction is parallel to the second direction Y to the traction machine 13, as a specific example, Figure 6 As shown, assuming that the traction rope 3 is directly led out from the second counterweight wheel 222 to the traction machine 13, if the counterweight wheel assembly 22 and the traction machine 13 are spaced apart in the third direction Z, the traction rope 3 extends to the traction machine 13 in a direction that is at an angle to the third direction Z. When the distance between the counterweight wheel assembly 22 and the traction machine 13 is long, the traction rope 3 between the second counterweight wheel 222 and the traction machine 13 is also long, which is not conducive to the transmission of traction force. Therefore, a guide wheel is set between the counterweight wheel assembly 22 and the traction machine 13 along the first direction X. 14. Specifically, along the first direction X, the guide wheel 14 is arranged between the second counterweight wheel 222 and the traction machine 13, and the axial direction of the guide wheel 14 is parallel to the second direction Y. It can be understood that the guide wheel 14, the second counterweight wheel 222, and the traction machine 13 are in the same plane. With this arrangement, the traction rope 3 extends from the second counterweight wheel 222 to the guide wheel 14 roughly in a vertical plane, and extends to the traction machine 13 through the guide wheel 14, which can reduce the possibility of the traction rope 3 slipping and falling off when passing through the counterweight wheel assembly 22.

[0078] The embodiment of the present application also provides an elevator 100, such as Figure 5 As shown, the elevator 100 according to the second embodiment of the present invention includes the elevator traction system 10 in the first embodiment.

[0079] Specifically, the elevator 100 further includes a car device 40, which includes a car body 41 and a car top pulley assembly 42 disposed on top of the car body 41. The traction device 1 further includes a car return pulley assembly 15. After the traction rope 3 is drawn out from the traction machine 13, it is further used to pass through the car top pulley assembly 42 and the car return pulley assembly 15 to be connected to the support frame 11. Optionally, the car top pulley assembly 42 and the car return pulley assembly 15 are both arranged at the center of the car body 41.

[0080] Further, if Figure 5 and Figure 6 As shown, there are four car return pulleys, namely a first car return pulley 151, a second car return pulley 152, a third car return pulley 153, and a fourth car return pulley 154, which are spaced apart along the third direction Z. There are three car top pulleys, namely a first car top pulley 421, a second car top pulley 422, and a third car top pulley 423, which are spaced apart along the third direction Z. After being led out from the traction machine 13, the traction rope 3 passes through the first car top pulley 421, the first car return pulley 151, the second car return pulley 152, the second car top pulley 422, the third car return pulley 153, the fourth car return pulley 154, and the third car top pulley 423 in sequence before being connected to the support frame 11.

[0081] According to the elevator 100 of the embodiment of the present invention, by setting the above-mentioned elevator traction system 10, the axial directions of M counterweight wheels among the N counterweight wheels are set to be parallel to the second direction Y, and the axial directions of the remaining counterweight wheels are set to be parallel to the third direction Z, thereby reducing the arrangement size of the counterweight wheels in the second direction Y, which is beneficial to reducing the space occupied by the counterweight device 2 in the second direction Y, thereby meeting the use requirement of the elevator 100 with a shallow depth.

[0082] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0083] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0084] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the illustrative use of the above terms does 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 any one or more embodiments or examples.

[0085] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An elevator traction system (10), characterized in that: include: A traction device (1), the traction device (1) comprising a support frame (11), a counterweight counter rope pulley assembly (12) and a traction machine (13), the counterweight counter rope pulley assembly (12) and the traction machine (13) both being arranged on the support frame (11); A counterweight device (2), wherein the counterweight device (2) and the support frame (11) are spaced apart in a first direction, the counterweight device (2) comprises a counterweight body (21) and a counterweight wheel assembly (22), the counterweight wheel assembly (22) comprises N counterweight wheels, the N counterweight wheels are spaced apart on the counterweight body (21) in a second direction, the axes of the M counterweight wheels are parallel to the second direction, and the axes of the NM counterweight wheels are parallel to a third direction, wherein 1≤M≤N-2, N≥3, and the first direction, the second direction, and the third direction are perpendicular to each other; A traction rope (3), one end of which is fixedly connected to the support frame (11), and the other end of which passes through the counterweight wheel assembly (22) and the counterweight counter-ropes wheel assembly (12), and is led out from the counterweight wheel assembly (22) to the corresponding counterweight wheel axially parallel to the second direction, so as to be connected to the traction machine (13).

2. The elevator traction system (10) according to claim 1, characterized in that: The counterweight body (21) has a symmetry center line parallel to the first direction, and the N counterweight wheels are symmetrically arranged on the counterweight body (21) relative to the symmetry center line.

3. The elevator traction system (10) according to claim 2, characterized in that: The counterweight back rope pulley assembly (12) comprises N counterweight back rope pulleys, wherein the N counterweight back rope pulleys are arranged on the support frame (11) at intervals along the second direction, wherein the axial directions of the M counterweight back rope pulleys are at an angle with the second direction, the axial directions of the NM counterweight back rope pulleys are parallel to the third direction, and each counterweight back rope pulley having an axial direction at an angle with the second direction is arranged between two corresponding adjacent counterweight wheels along the second direction, so that two ends of each counterweight back rope pulley having an axial direction at an angle with the second direction coincide with the centers of corresponding ends of the two corresponding adjacent counterweight wheels along the first direction.

4. The elevator traction system (10) according to claim 3, characterized in that: The counterweight wheel assembly (22) comprises: a first counterweight wheel (221), a second counterweight wheel (222) and a third counterweight wheel (223); along the second direction, the second counterweight wheel (222) is arranged between the first counterweight wheel (221) and the third counterweight wheel (223); wherein the axial direction of the second counterweight wheel (222) is parallel to the second direction; and the traction rope (3) is led out from the second counterweight wheel (222) and connected to the traction machine (13).

5. The elevator traction system (10) according to claim 4, characterized in that: The counterweight back rope pulley assembly (12) comprises a first counterweight back rope pulley (121), a second counterweight back rope pulley (122) and a third counterweight back rope pulley (123) which are arranged in sequence along the second direction; the axial direction of the first counterweight back rope pulley (121) and the axial direction of the third counterweight back rope pulley (123) are both parallel to the third direction; the axial direction of the second counterweight back rope pulley (122) forms an angle with the second direction; and along the second direction, the second counterweight back rope pulley (122) is arranged between the second counterweight wheel (222) and the third counterweight wheel (223), so that one end of the second counterweight back rope pulley (122) coincides with the center of one end of the second counterweight wheel (222) along the first direction, and the other end of the second counterweight back rope pulley (122) coincides with the center of one end of the third counterweight wheel (223) close to the second counterweight wheel (222) along the first direction.

6. The elevator traction system (10) according to claim 4, characterized in that: The counterweight back rope pulley assembly (12) comprises a first counterweight back rope pulley (121), a second counterweight back rope pulley (122) and a third counterweight back rope pulley (123) which are arranged in sequence along the second direction; the axial direction of the first counterweight back rope pulley (121) and the axial direction of the third counterweight back rope pulley (123) are both parallel to the third direction; the axial direction of the second counterweight back rope pulley (122) has an included angle with the second direction; and along the second direction, the second counterweight back rope pulley (122) is arranged between the first counterweight wheel (221) and the second counterweight wheel (222), so that one end of the second counterweight back rope pulley (122) coincides with the center of one end of the second counterweight wheel (222) along the first direction, and the other end of the second counterweight back rope pulley (122) coincides with the center of one end of the first counterweight wheel (221) close to the second counterweight wheel (222) along the first direction.

7. The elevator traction system (10) according to claim 5 or 6, characterized in that: Along the second direction, the center distance between the first counterweight wheel (221) and the third counterweight wheel (223) is equal to the center distance between the first counterweight return rope wheel (121) and the third counterweight return rope wheel (123).

8. The elevator traction system (10) according to claim 1, characterized in that: The traction machine (13) is arranged corresponding to the middle part of the counterweight body (21) along the second direction.

9. The elevator traction system (10) according to claim 1, characterized in that: The traction machine (13) is arranged at a distance from the counterweight counter-ropes assembly (12) along the third direction, and the axial direction of the traction machine (13) is parallel to the second direction.

10. The elevator traction system (10) according to claim 1, characterized in that: The traction device (1) further comprises: a guide wheel (14), wherein the guide wheel (14) is arranged on the support frame (11), and along the first direction, the guide wheel (14) is arranged between the counterweight wheel assembly (22) and the traction machine (13), and the axial direction of the guide wheel (14) is parallel to the second direction. After the traction rope (3) is led out from the corresponding counterweight wheel whose axial direction is parallel to the second direction, it is connected to the traction machine (13) through the guide wheel (14).

11. An elevator (100), characterized in that: It comprises an elevator traction system (10) according to any one of claims 1-10.

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