A full-encircling elevator traction suspension structure

Abstract

The present application relates to elevator traction suspension structure related technical field, disclose a kind of full ring around elevator traction suspension structure, the present application includes portal frame and car bottom board composition car frame structure, a car interval is formed in the car frame structure.The present application is designed as return rope beam by the setting of full ring around elevator traction suspension structure to the upper and lower beams of elevator car frame, using the full package mode of two lower beams return rope wheel with wider outer winding span and two upper beams return rope wheel with narrower continuous inner winding span, realize full ring around traction suspension, and form multi-point three-dimensional support structure, while installing deflection guide wheel in the space between return rope wheel, limit the sway of traction rope, ensure the stability of elevator operation, and by full ring around traction suspension mode, the stress of elevator car is more uniform, reduce the problem of stress concentration in single direction.Full use of the strength of upper and lower beams enables the elevator to carry greater load, meets the heavy load demand.

Description

Technical Field

[0001] This invention relates to the technical field of elevator traction suspension structures, and in particular to a full-circle elevator traction suspension structure. Background Technology

[0002] Traditional elevator car structures are divided into two types based on the traction suspension method: top-suspended and bottom-supported. Top-suspended structures use an upper beam return rope device, while bottom-supported structures use a lower beam return rope device. Both types are limited to traction in one direction, bearing almost all the car's weight and load on the return rope beam. This is not a major problem for lightweight passenger or freight elevators, but with the increasing demand for elevator carrying capacity in industrial plants, especially heavy industries, this design is becoming less efficient. For top-suspended structures, a more complex upper return rope beam with a higher traction ratio is needed, or the car's weight needs to be optimized to increase the rated load. However, this raises the issue of insufficient traction force caused by the lower beam, posing a risk of slippage. For bottom-supported structures, compared to top-suspended structures, the upper beam, due to traction... The point-like force distribution is optimized into a linear force distribution, improving the stress state of the return rope lower beam and further utilizing the mechanical properties of the material. However, since the return rope lower beam can only enter and exit the traction rope from both ends, a wandering space is easily formed between the two return rope wheels of the return rope lower beam. Especially at the moment of start-up, the return rope beam sways along the wandering space, causing the car to impact the guide rails on both sides in the width direction. This is acceptable for cars of normal width, but for cars with large width, this impact is uncontrollable and unacceptable. Through practice, it has been proven that for this structure where the traction rope spans the double wheels, as long as a limiting device or limiting breakpoint is added to the wandering space (generally above the load-bearing structure), the above problems can be effectively solved. In order to solve the above problems, a full-circle elevator traction suspension structure is proposed. Summary of the Invention

[0003] This invention provides a fully encircling elevator traction suspension structure, which solves the problems mentioned in the background art.

[0004] The technical problem solved by this invention is achieved through the following technical solution:

[0005] A fully encircling elevator traction suspension structure includes a car frame structure composed of a gantry frame and a car floor plate, wherein a car compartment is formed within the car frame structure, and the car frame structure is located above the car compartment to form a load-bearing area;

[0006] The car section includes a first car bottom return rope wheel and a second car bottom return rope wheel located on the gantry frame at the position below the car floor. The top of the gantry frame is provided with a first car top return rope wheel and a second car top return rope wheel that are in the same plane as the first car bottom return rope wheel and the second car bottom return rope wheel.

[0007] One side of the first car bottom return rope pulley and the second car bottom return rope pulley is also provided with an adjustment component for changing the center of gravity of the car system;

[0008] The load-bearing area includes a deflection guide wheel, a car rope head, and a traction wheel for providing power. A traction rope is tensioned in the groove of the traction wheel. The traction rope enters from the traction wheel, passes through the first car bottom return rope wheel and the second car bottom return rope wheel in sequence, and extends into the deflection guide wheel. Then it enters the first car top return rope wheel and the second car top return rope wheel, and is finally fixed to the car rope head.

[0009] Preferably, the gantry frame further includes two return rope beams for installing two pairs of return rope pulleys, the two return rope beams being spaced apart vertically and integrally connected to the gantry frame.

[0010] Preferably, the adjusting component includes supporting lower beams on both sides of the gantry frame, the supporting lower beams and the common lower beam forming an adjustable space, and the gantry frame extends downward into the adjusting space in a vertical beam form for fixation.

[0011] Preferably, a safety clamp is provided below the supporting lower beam to ensure the safe operation of the elevator car.

[0012] Preferably, a lower guide shoe for cooperating with the guide rail is also provided directly below the safety clamp.

[0013] Preferably, the adjusting component further includes a coupling damping mechanism disposed at the bottom of the upper and lower return rope beams. The coupling damping mechanism includes damping rubber disposed at the bottom of the return rope beams, and a coupling bridge for fixing and limiting the damping rubber is provided below the damping rubber.

[0014] Preferably, the car section and the load-bearing section are further provided with safety structures to improve the traction ratio.

[0015] Preferably, one end of the car rope is fixed to the top of the elevator shaft, and the other end of the traction rope inside the traction sheave is connected to the counterweight side of the elevator. The advantages and positive effects of this invention are: by setting up a fully encircling elevator traction suspension structure, both the upper and lower beams of the elevator car frame are designed as return rope beams. A full-wrap method is adopted, using two lower beam return rope sheaves with a wider outer span and two upper beam return rope sheaves with a narrower inner span, achieving fully encircling traction suspension and forming a multi-point three-dimensional support structure. Simultaneously, deflection guide wheels are installed in the travel space between the return rope sheaves to limit the swaying of the traction rope, ensuring the smooth operation of the elevator. Furthermore, the fully encircling traction suspension method makes the force on the elevator car more uniform, reducing the problem of force concentration in one direction. By fully utilizing the strength of the upper and lower beams, the elevator can bear a larger load and meet heavy-load requirements. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a schematic diagram of the structure of the present invention;

[0018] Figure 2 yes Figure 1 A partial structural diagram;

[0019] Figure 3 yes Figure 2 A magnified structural diagram of A in the middle;

[0020] Figure 4 yes Figure 1 Schematic diagram of the traction suspension structure of the central-circle elevator Figure 1 ;

[0021] Figure 5 yes Figure 1 Schematic diagram of the traction suspension structure of the central-circle elevator Figure 2 ;

[0022] Figure 6 yes Figure 1 Schematic diagram of the traction suspension structure of the central-circle elevator Figure 3 ;

[0023] The markings in the attached diagram are described below:

[0024] 1. Car floor plate; 11. Car compartment; 111. Gantry frame; 12. Return rope beam; 121. Second car top return rope sheave; 122. First car top return rope sheave; 13. Deflection guide sheave; 131. Traction rope; 132. Load-bearing space; 14. Car rope end; 15. Traction sheave;

[0025] 2. Adjusting component; 21. First car bottom return rope pulley; 211. Second car bottom return rope pulley; 22. Lower guide shoe; 23. Support lower beam; 24. Coupling vibration damping mechanism; 25. Coupling bridge; 251. Vibration damping rubber; 26. Safety clamp. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention. The embodiments of the invention are further described in detail below with reference to the accompanying drawings:

[0027] Reference Figure 1 and Figure 2 as well as Figure 3As shown, the top-mounted type uses an upper beam return rope device, while the bottom-supported type uses a lower beam return rope device. The top-mounted type requires a larger or more complex upper return rope beam design, or optimization and weight reduction of the car's self-weight to increase the rated load. The bottom-supported type improves the stress state through the linear force of the return rope beam, but there is a problem of wandering space formed when the traction rope 131 enters and exits at both ends of the return rope beam. The top-mounted type requires a larger or more complex upper return rope beam design, increasing the complexity and cost of the structure. Although the bottom-supported type improves the stress state, the wandering space problem of the return rope beam causes the car to impact the guide rails on both sides in the width direction, especially at the moment of start-up. This impact is uncontrollable and particularly unacceptable for wide cars. Existing electric The elevator car frame structure suffers from insufficient load-bearing capacity and system stability issues in heavy-load and wide-width application scenarios, as well as stress concentration and local stress concentration problems in the return rope beam 12. To solve these problems, a fully encircling elevator traction suspension structure is proposed. By designing both the upper and lower beams of the elevator car frame as return rope beams 12, and adopting a fully enclosed approach and installing deflecting guide wheels 13 in the travel space, the smoothness of elevator operation is achieved. Specifically, the fully encircling elevator traction suspension structure includes a car frame structure composed of a gantry frame 111 and a car floor plate 1. A car compartment 11 is formed within the car frame structure, and the car frame structure is located above the car compartment 11 to form a load-bearing compartment.

[0028] The car section 11 includes a first car bottom return rope wheel 21 and a second car bottom return rope wheel 211 located on the lower side of the car bottom plate 1 of the gantry frame 111. The top of the gantry frame 111 is provided with a first car top return rope wheel 122 and a second car top return rope wheel 121 that are in the same plane as the first car bottom return rope wheel 21 and the second car bottom return rope wheel 211.

[0029] One side of the first car bottom return rope wheel 21 and the second car bottom return rope wheel 211 is also provided with an adjustment component 2 for changing the center of gravity of the car system;

[0030] The load-bearing section includes a deflection guide wheel 13, a car rope head 14, and a traction sheave 15. A traction rope 131 is tensioned within the traction sheave 15. The traction rope 131 enters from the traction sheave 15, sequentially loops through the first car bottom return rope sheave 21 and the second car bottom return rope sheave 211, extends into the deflection guide wheel 13, then enters the first car top return rope sheave 122 and the second car top return rope sheave 121, and is finally fixed to the car rope head 14. The fully encircling elevator traction suspension structure... The elevator car frame features upper and lower beams designed as return rope beams 12. A full-wrap design is employed, with two wider-span lower beam return rope wheels on the outside and two narrower-span upper beam return rope wheels on the inside. This achieves full-circle traction suspension and forms a multi-point three-dimensional support structure. Deflecting guide wheels 13 are installed in the space between the return rope wheels to limit the swaying of the traction ropes 131, ensuring smooth elevator operation. Furthermore, the full-circle traction suspension method makes the force on the elevator car more even, reducing the problem of force concentration in one direction. By fully utilizing the strength of the upper and lower beams, the elevator can bear greater loads and meet heavy-load requirements.

[0031] Reference Figure 4 As shown, it should be noted that the aforementioned full-circle design refers to the traction rope 131 entering from the traction sheave 15, sequentially passing through the first bottom return rope sheave 21 and the second bottom return rope sheave 211, extending into the deflection guide sheave 13, and then entering the first top return rope sheave 122 and the second top return rope sheave 121, finally being fixed to the car rope end 14. Furthermore, one end of the car rope end 14 is used to fix to the top of the elevator shaft, and the other end of the traction rope 131 in the traction sheave 15 is used to connect to the counterweight side of the elevator. This full-circle structure allows for more even force distribution on the elevator car, enabling it to bear greater loads. The multi-point three-dimensional suspension support and the design of limited travel space improve the stability and safety of elevator operation. Reasonable force distribution and material utilization reduce local stress concentration and extend the service life of the car frame.

[0032] Furthermore, the car section 11 and the load-bearing section are also equipped with safety structures to improve the traction ratio. The specific features of the safety structures are as follows: Figure 4 The suspension structure used is a 4:1 traction ratio. However, to ensure the overall strength of the suspension structure can adapt to traction machines with different parameters, in this embodiment, after installing a pair of return rope pulleys in the load-bearing space 132, it becomes a 6:1 suspension structure. (Refer to...) Figure 5 As shown, based on the 6:1 suspension structure, adding a return rope pulley to the upper beam of the car frame can create an 8:1 suspension structure, thus adapting to traction machines with different parameters.

[0033] It should be noted that the above-mentioned changes to the traction ratio of the suspension structure do not affect other structures; only some structures have been added to adjust the traction ratio.

[0034] It should also be noted that the fully encircling elevator traction suspension structure, through optimized design and material utilization, not only improves the elevator's load-bearing capacity and operational stability, but also extends the service life of the car frame. It is particularly suitable for heavy-load and wide-width elevator applications. This innovative design provides a safer and more efficient vertical transportation solution for modern industry and warehousing.

[0035] Additionally, to ensure the stability of the aforementioned car system, in this embodiment, one side of the first car bottom return rope wheel 21 and the second car bottom return rope wheel 211 is also provided with an adjustment component 2 for changing the center of gravity of the car system; the center of gravity of the car system can be adjusted by setting the adjustment component 2.

[0036] Furthermore, to adjust the counterweight, the length of the lower beam return rope wheel axle and the distance between the return rope beam and the common lower beam can be adjusted appropriately to change the center of gravity of the car system, achieve a suitable balance, and reduce the friction of the car guide shoes on the guide rails.

[0037] Specifically, the structure of the aforementioned adjusting component 2 is as follows: the adjusting component 2 further includes a coupling damping mechanism 24 disposed at the bottom of the two return rope beams 12. The coupling damping mechanism 24 includes a damping rubber 251 disposed at the bottom of the return rope beam 12. A coupling bridge 25 for fixing and limiting the damping rubber 251 is provided below the damping rubber 251. The setting of the coupling damping mechanism 24 can achieve a better damping effect for the entire elevator system during movement.

[0038] It is worth mentioning that the above-mentioned specialized terms need to be explained. Specifically: Deflection guide wheel 13: has a certain degree of rotational freedom relative to the vertical direction, and is used to limit the swaying of the traction rope 131 during start-up and stop, so as to ensure the smooth operation of the elevator.

[0039] Stretch space: refers to the range of motion of the traction rope 131 on the return rope beam 12. Excessive stretch space may cause the car and traction rope 131 to sway, affecting the stability of the elevator.

[0040] Coupling damping assembly: A component used to absorb vibrations and shocks during elevator operation, which coordinates damping through coupling bridge 25 to reduce noise and vibration transmission.

[0041] Furthermore, there are lower guide shoes 22 and safety clamps 26 to ensure the necessary structure during the operation of the entire elevator system, which will not be elaborated here.

[0042] It should be emphasized that the embodiments described in this invention are illustrative rather than limiting. Therefore, this invention is not limited to the embodiments described in the specific implementation. Any other implementation methods derived by those skilled in the art based on the technical solutions of this invention also fall within the scope of protection of this invention.

Claims

1. A fully encircling elevator traction suspension structure, comprising a car frame structure composed of a gantry frame (111) and a car floor plate (1), characterized in that: A car compartment (11) is formed within the car frame structure, and the car frame structure forms a load-bearing compartment above the car compartment (11); The car section (11) includes a first car bottom return rope wheel (21) and a second car bottom return rope wheel (211) located on the lower side of the car bottom plate (1) of the gantry frame (111). The top of the gantry frame (111) is provided with a first car top return rope wheel (122) and a second car top return rope wheel (121) that are in the same plane as the first car bottom return rope wheel (21) and the second car bottom return rope wheel (211). One side of the first car bottom return rope pulley (21) and the second car bottom return rope pulley (211) is also provided with an adjustment component (2) for changing the center of gravity of the car system; The load-bearing area includes a deflection guide wheel (13), a car rope head (14), and a traction wheel (15) for providing power. A traction rope (131) is tensioned in the groove of the traction wheel (15). The traction rope (131) enters from the traction wheel (15), passes through the first car bottom return rope wheel (21) and the second car bottom return rope wheel (211) in sequence, and extends into the deflection guide wheel (13). Then it enters the first car top return rope wheel (122) and the second car top return rope wheel (121) and is finally fixed on the car rope head (14). The car section (11) and the load-bearing section are also equipped with safety structures to improve the traction ratio; The change in the traction ratio of the suspension structure did not affect other structures; only some structures were added to adjust the traction ratio. The gantry frame (111) also includes two return rope beams (12) for installing two pairs of return rope wheels, the two return rope beams (12) are distributed vertically at intervals and are integrally connected with the gantry frame (111); The adjusting component (2) includes a supporting lower beam (23) and a common lower beam located on both sides of the gantry frame (111). An adjustable space is formed between the supporting lower beam (23) and the common lower beam. The gantry frame (111) extends downward into the adjusting space in a vertical beam frame for fixing. The adjusting component (2) also includes a coupling damping mechanism (24) disposed at the bottom of the upper and lower return rope beams (12). The coupling damping mechanism (24) includes a damping rubber (251) disposed at the bottom of the return rope beam (12). A coupling bridge (25) for fixing and limiting the damping rubber (251) is provided below the damping rubber (251). To adjust the counterweight, the length of the lower beam return rope wheel axle and the distance between the return rope lower beam and the common lower beam can be adjusted appropriately to change the center of gravity of the car system, achieve a suitable balance, and reduce the friction of the car guide shoes on the guide rails. The deflection guide wheel (13) has a certain degree of rotational freedom relative to the vertical direction. It is used to limit the swaying of the traction rope (131) during start-up and stop, and to ensure the smooth operation of the elevator.

2. The fully encircling elevator traction suspension structure according to claim 1, characterized in that: The lower support beam (23) is provided with a safety clamp (26) to ensure the safe operation of the elevator car.

3. The fully encircling elevator traction suspension structure according to claim 2, characterized in that: The safety clamp (26) is also provided with a lower guide shoe (22) for cooperating with the guide rail.

4. The fully encircling elevator traction suspension structure according to claim 3, characterized in that: One end of the car rope head (14) is used to fix it to the top of the elevator shaft, and the other end of the traction rope (131) in the traction sheave (15) is used to connect to the counterweight side of the elevator.

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