Anti-skewing elevator

Abstract

An anti-unloading elevator, the counterweight guide rail and the car guide rail are located on the same side in the shaft, one end of the traction rope is fixed on the first mounting frame, then passes through the second guide wheel, the second car device return rope wheel, the first car device return rope wheel, the first guide wheel, the top pressing wheel, the traction wheel, the counterweight return rope wheel, and is fixed upward at the top of the shaft below the top pressing wheel, the traction wheel and the counterweight device are located on one side of the vertical plane of the top pressing wheel axis, the first mounting frame and the car device are located on the other side of the vertical plane, the forces on both sides are balanced, so that the car device stably rises and falls along the car guide rail to prevent deviation, and the space utilization, maintenance convenience, operation stability and safety are improved, which has high practicability and innovation, can significantly improve the overall performance and user experience of the elevator, and can realize single door, through door, right angle door and three side door design.

Description

Technical Field

[0001] This utility model relates to the field of elevator frame manufacturing technology, and in particular to an elevator designed to prevent eccentric loading. Background Technology

[0002] As an indispensable vertical transportation tool in modern buildings, the smoothness, safety and space utilization efficiency of elevators have always been the focus of technological improvement in this field. In the existing technology and in the existing elevator design, the common elevator frame structure mainly includes two forms: one is the traditional gantry frame structure and the other is the backpack frame structure. The two structures are different and the traction ropes are also different.

[0003] However, both structures have some insurmountable drawbacks in practical applications. The traditional gantry frame structure is characterized by supporting the elevator car and counterweight system with a large gantry frame. While this structure can ensure the stability of the elevator to a certain extent, its large size and large building space occupation limit the usable area of ​​the car. On the other hand, the backpack frame structure reduces the building space occupation by integrating some components on the back of the car. However, due to the uneven force distribution of the car and counterweight, especially during elevator operation, the structure that supports only one side of the car is prone to uneven loading, which affects the stability and safety of the elevator. In addition, the guide pulleys are directly exposed in the elevator shaft and are easily affected by debris, and the debris generated by the friction between the guide pulleys and the traction ropes will affect normal sliding.

[0004] Therefore, it is necessary to propose an elevator that prevents off-center loading in order to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing an elevator designed to prevent eccentric loading.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: an elevator for preventing eccentric loading, comprising a counterweight device that slides up and down via a counterweight guide rail, a car device that slides up and down via a car guide rail, a traction rope, and a traction sheave. The traction sheave and a first mounting frame are installed at the top of the shaft, and a top pressure wheel is located between and below the traction sheave and the first mounting frame. A first guide wheel and a second guide wheel are fixed on the first mounting frame. A second mounting frame is fixed on the top of the car device, and a first car device return rope sheave and a second car device return rope sheave are installed on the second mounting frame. A counterweight is fixed on the counterweight device. The return rope sheave is located on the same side of the hoistway as the counterweight guide rail and the car guide rail. After one end of the traction rope is fixed on the first mounting frame, it passes sequentially around the second guide wheel, the second car device return rope sheave, the first car device return rope sheave, the first guide wheel, the top pressure wheel, the traction sheave, and the counterweight return rope sheave before returning upwards and being fixed below the top pressure wheel at the top of the hoistway. The traction sheave and the counterweight device are located on one side of the vertical plane where the axis of the top pressure wheel is located, and the first mounting frame and the car device are located on the other side of the vertical plane. The forces on both sides are balanced, so that the car device can stably move up and down along the car guide rail without deviating.

[0007] In some embodiments, the first guide wheel and the second guide wheel are located on opposite sides of the transverse fixing frame at the top of the main support frame, and the first car device return rope wheel and the second car device return rope wheel are located on opposite sides of the top of the car device.

[0008] In some embodiments, a maintenance structure is also provided on at least one of the second guide wheel, the second car device return rope wheel, the first car device return rope wheel, the first guide wheel, and the return rope wheel for cleaning and maintenance of the wheels and the traction rope.

[0009] In some embodiments, the maintenance structure includes an upper housing and a lower housing. The maintenance structure has a pair of through holes for the traction rope to pass through. A fixed lubricating oil cylinder is fixed inside the maintenance structure. A squeezing wheel is rotatably mounted on the output pipe of the fixed lubricating oil cylinder. The opening of the output pipe of the fixed lubricating oil cylinder faces the surface of the squeezing wheel. A drive wheel is also rotatably connected inside the maintenance structure. The traction rope passes between the squeezing wheel and the drive wheel. Annular brushes are fixed on the surfaces of both the drive wheel and the squeezing wheel. When the elevator is running, the traction rope moves between the squeezing wheel and the drive wheel.

[0010] In some embodiments, a sliding seat is fixed on the upper or lower housing within the maintenance structure. A sliding rod is elastically slidably arranged in the sliding seat along the radial direction of the wheel. An arc-shaped plate is hinged to the top of the sliding rod. Multiple sets of brush bristles are fixedly connected to one surface of the arc-shaped plate near the wheel, and multiple ash grooves are formed between the multiple sets of brush bristles.

[0011] In some embodiments, a pair of springs are provided between the upper housing or the lower housing and the arc-shaped plate, and the two springs are respectively located on opposite sides of the slide rod.

[0012] In some embodiments, the lower housing is provided with an inspection door, which can be flipped open to clean the dust at the bottom of the lower housing.

[0013] In some embodiments, it also includes a main support frame disposed on one side inside the shaft, a side portion of the main support frame having transverse fixing frames at both the top and bottom, the car guide rail and the counterweight guide rail being fixed on the main support frame, and the first mounting frame being fixed on the top transverse fixing frame.

[0014] This utility model has the following beneficial effects: In the scheme of this application, the counterweight device and the car device are subjected to balanced forces during operation, and the car device can move smoothly up and down along the car guide rail, which greatly reduces the off-center load phenomenon and improves the stability and safety of elevator operation. The anti-off-center load elevator frame structure of this utility model not only solves the off-center load problem existing in the existing backpack elevator structure, but also improves the space utilization, maintenance convenience, operation stability and safety through optimized design. It has high practicality and innovation, and can significantly improve the overall performance of the elevator and user experience. At the same time, it can realize single door, through door, right angle door, and three-sided door design. Attached Figure Description

[0015] Figure 1 This is a first-view schematic diagram of the overall structure of an anti-eccentric load elevator proposed in this utility model. Figure 2 This is a second-view schematic diagram of the overall structure of an anti-eccentric load elevator proposed in this utility model; Figure 3 This is a schematic diagram of the upper and lower shell mating structure of an elevator designed to prevent eccentric loading according to this utility model. Figure 4 This is a schematic diagram of the cross-sectional structure of the upper and lower shells; Figure 5 This is a schematic diagram of the internal structure of the upper and lower shells; Figure 6 for Figure 4 Enlarged structural diagram at point A in the middle; Figure 7 This is a schematic diagram of the maintenance structure in this utility model; Figure 8 for Figure 7 Enlarged structural diagram at point B; Figure 9 This is a schematic diagram of the traction principle of this utility model; Figure 10 This is a top view of the shaft layout of this utility model.

[0016] Legend: 1. Main support frame; 2. Counterweight device; 3. Car assembly; 4. Return rope sheave; 5. First car assembly return rope sheave; 6. Second car assembly return rope sheave; 7. Top pressure wheel; 8. First guide wheel; 9. Second guide wheel; 10. Traction sheave; 11. Upper housing; 12. Lower housing; 13. Traction rope; 14. Through hole; 15. Arc plate; 16. Brush bristles; 17. Fixed lubricating oil cylinder; 18. Extrusion wheel; 19. Sliding seat; 20. Spring; 21. Transmission wheel; 22. Annular brush; 25. Lower ash trough; 26. Inspection door. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Reference Figures 1-10 The present invention provides an anti-eccentric load elevator, comprising a main support frame 1, a counterweight device 2 that slides up and down via a counterweight guide rail on the main support frame 1, a car device 3 that slides up and down via a car guide rail on the main support frame 1, a traction rope 13, and a traction sheave 10.

[0019] The top of the main support frame 1 inside the shaft is equipped with a traction sheave 10 and a first mounting frame. A top pressure wheel 7 is located between and below the traction sheave 10 and the first mounting frame. A first guide wheel 8 and a second guide wheel 9 are fixed on the first mounting frame. A second mounting frame is fixed on the top of the car device 3. A first car device return rope wheel 5 and a second car device return rope wheel 6 are provided on the second mounting frame. A counterweight return rope wheel 4 is fixed on the counterweight device 2. The counterweight guide rail and the car guide rail are located on the same side inside the shaft.

[0020] As attached Figure 9 As shown, after one end of the traction rope 13 is fixed to the first mounting frame at the top of the shaft, it passes in sequence around the second guide wheel 9, the second car device return rope wheel 6, the first car device return rope wheel 5, the first guide wheel 8, the top pressure wheel 7, the traction wheel 10, and the return rope wheel 4, and then returns upward and is fixed to the top of the shaft and located below the top pressure wheel 7, with the center lines of each wheel parallel.

[0021] The traction sheave 10 and the counterweight device 2 are located on one side of the vertical plane where the axis of the top pressure sheave 7 is located, and the first mounting frame and the car device 3 are located on the other side of the vertical plane. The forces on both sides are balanced, so that the car device 3 can move up and down stably along the car guide rail without deviating.

[0022] The main support frame 1 has a transverse fixing frame on one side at both the top and bottom. The transverse fixing frame is made of high-strength steel and has good structural strength and stability. The first mounting frame is fixed on the transverse fixing frame; and the first mounting frame is fixed on the top transverse fixing frame. The car guide rail and the counterweight guide rail are both fixed on the main support frame 1. The main support frame 1 bears the weight of the car device 3 and the counterweight device 2, and the traction rope 13 is moved by the traction sheave 10. During operation, the traction sheave 10, through the cooperation of various guide wheels, car device wheels, and top pressure wheels, makes the car device 3 below the transverse fixing frame move along the main support frame 1 to prevent eccentric loading. Due to the even distribution of the return rope wheel and guide wheels of the car device, the car device is subjected to balanced forces, so it can move smoothly along the main support frame during operation.

[0023] The first guide wheel 8 and the second guide wheel 9 are located on opposite sides of the transverse fixed frame at the top of the main support frame 1, and the first car device return rope wheel 5 and the second car device return rope wheel 6 are located on opposite sides of the top of the car device 3.

[0024] It also includes a maintenance structure, comprising at least one of the following: a second guide wheel 9, a second car device return rope wheel 6, a first car device return rope wheel 5, a first guide wheel 8, and a return rope wheel 4, for cleaning and maintaining the wheels and the traction rope 13. Taking the first guide wheel 8 as an example, the maintenance structure includes an upper housing 11 and an arc-shaped plate 15, for cleaning and maintaining the wheels and the traction rope 13. The maintenance structure includes an upper housing 11 and a lower housing 12. The maintenance structure has a pair of through holes 14 for the traction rope 13 to pass through. A sliding seat 19 is fixed at the bottom of the lower housing 12. A sliding rod is elastically slidably arranged in the sliding seat 19 along the radial direction of the wheel. An arc plate 15 is hinged to the top of the sliding rod. Multiple sets of nylon bristles 16 are fixedly connected to the surface of the arc plate 15 near the first guide wheel 8, and multiple ash grooves 25 are opened between the multiple sets of bristles 16. When the elevator is running, the traction rope 13 enters the interior of the maintenance structure through the through holes 14, passes around the first guide wheel 8 and rotates it. The bristles 16 on the arc plate 15 clean the grooves of the wheel. If there are any stuck particles of dust and debris, they are removed by the bristles 16 and enter the bottom of the lower housing 12 through the ash grooves 25, waiting for cleaning during the next maintenance.

[0025] A pair of springs 20 are provided between the lower housing 12 and the arc-shaped plate 15, with the two springs 20 located on opposite sides of the slide rod. The arc-shaped plate 15 is provided with elastic support by the springs 20, and the arc-shaped plate 15 maintains a stable contact pressure with the first guide wheel 8 during the cleaning process.

[0026] A fixed lubricating oil cylinder 17 is fixed inside the upper housing 11. A pressing wheel 18 is pivotally connected to or rotatably mounted on the output pipe of the fixed lubricating oil cylinder 17 via a bearing. The outlet of the fixed lubricating oil cylinder 17 faces the surface of the pressing wheel 18. A transmission wheel 21 is also rotatably connected inside the maintenance structure. A traction rope 13 passes between the pressing wheel 18 and the transmission wheel 21. Nylon annular brushes 22 are fixed on the surfaces of both the transmission wheel 21 and the pressing wheel 18. When the elevator is running, the traction rope 13 moves between the pressing wheel 18 and the transmission wheel 21. When the pressing wheel 18 rotates due to friction from the traction rope 13, the fixed lubricating oil in the fixed lubricating oil cylinder 17 is output to the annular brushes 22. The traction rope 13 is cleaned and oiled with oil to prevent rust by passing through the annular brushes 22.

[0027] The lower housing 12 also has a pair of springs 20 that are connected to the arc plate 15. The pair of springs 20 are located on opposite sides of the arc plate 15. The springs 20 provide elastic support during the cleaning process, so that the arc plate 15 remains in a stable position.

[0028] The lower housing 12 is provided with an inspection door 26. By flipping the inspection door 26, the dust inside the bottom of the lower housing 12 can be cleaned. The inspection door 26 can be flipped open using existing technology. When the staff inspects and maintains the elevator, they can open the inspection door and clean the dust and debris inside the bottom of the lower housing 12.

[0029] It should be noted that the aforementioned maintenance structure, on the one hand, protects the wheels from secondary damage caused by falling debris during elevator operation, and also provides some dust protection. On the other hand, the maintenance structure can clean the debris from friction between the wheels and the traction rope and apply oil to prevent rust, thus extending service life and improving safety.

[0030] Working principle: When the elevator is running, the traction sheave 10 rotates under the drive of the motor, which drives the car assembly 3 and the counterweight assembly 2 to move up and down through the traction rope 13. This layout improves the uniform distribution of tension in the traction rope 13, so that the car assembly 3 and the counterweight assembly 2 are balanced in force during operation, reducing the phenomenon of uneven load.

[0031] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An elevator designed to prevent eccentric loading, comprising a counterweight device (2) that slides vertically along a counterweight guide rail, a car device (3) that slides vertically along a car guide rail, a traction rope (13), and a traction sheave (10), characterized in that: The traction sheave (10) and the first mounting frame are installed at the top of the shaft, and the top pressure wheel (7) is located between and below the traction sheave (10) and the first mounting frame. The first mounting frame is fixed with a first guide wheel (8) and a second guide wheel (9). The top of the car device (3) is fixed with a second mounting bracket, on which a first car device return rope wheel (5) and a second car device return rope wheel (6) are provided. The counterweight device (2) is fixed with a counterweight return rope wheel (4). The counterweight guide rail and the car guide rail are located on the same side of the hoistway. After one end of the traction rope (13) is fixed to the first mounting frame, it passes in sequence around the second guide wheel (9), the second car device return rope wheel (6), the first car device return rope wheel (5), the first guide wheel (8), the top pressure wheel (7), the traction wheel (10), and the return rope wheel (4), and then returns upward and is fixed below the top pressure wheel (7) at the top of the shaft. The traction sheave (10) and the counterweight device (2) are located on one side of the vertical plane where the axis of the top pressure wheel (7) is located, and the first mounting bracket and the car device (3) are located on the other side of the vertical plane. The forces on both sides are balanced, so that the car device (3) moves stably up and down along the car guide rail to prevent deviation.

2. The elevator for preventing eccentric loading according to claim 1, characterized in that: The first guide wheel (8) and the second guide wheel (9) are located on opposite sides of the transverse fixing frame at the top of the main support frame (1), and the first car device return rope wheel (5) and the second car device return rope wheel (6) are located on opposite sides of the top of the car device (3).

3. The elevator for preventing off-center loading according to claim 1, characterized in that: It also includes a maintenance structure on at least one of the following: a second guide wheel (9), a second car device return rope wheel (6), a first car device return rope wheel (5), a first guide wheel (8), and a return rope wheel (4), for cleaning and maintenance of the wheels and the traction rope (13).

4. The elevator for preventing off-center loading according to claim 3, characterized in that: The maintenance structure includes an upper shell (11) and a lower shell (12). A pair of through holes (14) are provided on the maintenance structure for the traction rope (13) to pass through. A fixed lubricating oil cylinder (17) is fixed inside the maintenance structure. A squeezing wheel (18) is rotatably installed on the output pipe of the fixed lubricating oil cylinder (17). The outlet of the fixed lubricating oil cylinder (17) faces the surface of the squeezing wheel (18). A transmission wheel (21) is also rotatably connected inside the maintenance structure. The traction rope (13) passes between the squeezing wheel (18) and the transmission wheel (21). A ring brush (22) is fixed on the surface of both the transmission wheel (21) and the squeezing wheel (18). When the elevator is running, the traction rope (13) moves between the squeezing wheel (18) and the transmission wheel (21).

5. The elevator for preventing eccentric loading according to claim 4, characterized in that: A sliding seat (19) is fixed on the upper housing (11) or the lower housing (12) within the maintenance structure. A sliding rod is elastically slidably arranged in the sliding seat (19) along the radial direction of the wheel. An arc plate (15) is hinged to the top of the sliding rod. Multiple sets of brush bristles (16) are fixedly connected to one surface of the arc plate (15) near the wheel, and multiple lower dust grooves (25) are opened between the multiple sets of brush bristles (16).

6. The elevator for preventing eccentric loading according to claim 5, characterized in that: A pair of springs (20) are provided between the upper housing (11) or the lower housing (12) and the arc plate (15), and the two springs (20) are respectively located on opposite sides of the slide rod.

7. The elevator for preventing eccentric loading according to claim 6, characterized in that: The lower housing (12) is provided with an inspection door (26), and the dust inside the bottom of the lower housing (12) can be cleaned by flipping the inspection door (26).

8. The elevator for preventing eccentric loading according to claim 1, characterized in that: It also includes a main support frame (1) set on one side inside the shaft, and a side part with a transverse fixing frame set on the top and bottom of the main support frame (1). The car guide rail and the counterweight guide rail are both fixed on the main support frame (1), and the first mounting frame is fixed on the top transverse fixing frame.

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