Wheel beam structure for elevator bottom

Abstract

The application discloses a wheel beam structure of an elevator bottom, which comprises a cross beam arranged at the elevator bottom, at least two reinforcing ribs arranged on the cross beam, and two traction sheaves arranged at two ends of the cross beam respectively. Four connecting plates are arranged on the two ends of the cross beam along the side walls of the cross beam respectively, and the four connecting plates are arranged at the two ends of the cross beam in pairs. The cross beam is in a U-shaped section along the length direction. An arc-shaped groove is formed in the connecting plate, and a connecting shaft is arranged on the two sides of the traction sheave and fixed on the arc-shaped grooves of the two connecting plates. The traction sheave is arranged at the two ends of the cross beam. The wheel beam structure of the elevator bottom hides the two traction sheaves completely at the two ends of the cross beam, avoids the traction sheaves from occupying space below the wheel beam, increases the descending space of the car, shortens the length of the elevator shaft, and improves the space utilization of the floor.

Description

Technical Field

[0001] This utility model relates to the field of elevator equipment technology, and in particular to a wheel beam structure at the bottom of an elevator. Background Technology

[0002] An elevator is a power-driven electromechanical device that uses a rigid guide rail cabin or steps running along a fixed route to lift or transport people and goods vertically or horizontally. It includes passenger (freight) elevators, escalators, and moving walkways. Regardless of their drive method, elevators are conventionally considered a general term for vertical transportation tools within buildings. Vertical elevators require the process of ascending or descending. For example, Chinese patent CN201921550688.5 discloses a car frame structure for a home elevator, which includes an upper crossbeam with columns at both ends. The lower ends of the columns are connected to a car base frame. The car frame also includes a safety clamp lifting device. The car base frame is characterized by two parallel fixed beams, and a counterweight front beam, a counter-rope wheel beam, and a counterweight rear beam sequentially arranged between the two fixed beams. The counter-rope wheel beam is located at 2 / 5-3 / 5 of the length of the fixed beams. A buffer plate is provided between the counterweight front beam and the counter-rope wheel beam. A car base rope wheel assembly is provided on the counter-rope wheel beam. This car frame structure can reduce the overall weight of the elevator, thereby increasing the load capacity of the elevator car. However, the sheave in this structure is located below the anti-sheave beam, which causes the sheave to occupy too much space, thereby reducing the elevator's descent space, increasing the length of the elevator shaft, and resulting in low space utilization of the floors. Utility Model Content

[0003] In view of this, the present invention provides a wheel beam structure at the bottom of an elevator to solve the above problems.

[0004] An elevator bottom beam structure includes a crossbeam disposed at the bottom of the elevator, at least two reinforcing ribs disposed on the crossbeam, and two traction sheaves respectively disposed at both ends of the crossbeam. Four connecting plates protrude along the sidewalls of each end of the crossbeam, with the four connecting plates corresponding to each other at both ends of the crossbeam. An arc-shaped groove is formed on each connecting plate, and a connecting shaft protrudes from both sides of each traction sheave. The connecting shafts are fixedly mounted in the arc-shaped grooves of the two connecting plates, and the two traction sheaves are located at both ends of the crossbeam.

[0005] Furthermore, the crossbeam has a U-shaped cross-section along its length, with its two sidewalls protruding outwards to form two wall grooves.

[0006] Furthermore, a cover plate is provided on the two connecting plates, and the two sidewall edges of the cover plate extend upward toward the connecting plates.

[0007] Furthermore, a baffle is provided on the side of the cover plate near the crossbeam that protrudes toward the connecting plate, and the two sides of the baffle abut against the opposite sidewalls of the two connecting plates.

[0008] Furthermore, at least four slots are respectively provided at both ends of the crossbeam near the connecting plate, and the four slots are arranged at intervals between each other.

[0009] Furthermore, a clearance zone is provided at the inner wall edge positions of the two corresponding slots facing each other.

[0010] Furthermore, the cross-section of the reinforcing rib along its length is U-shaped, and the width of its two sidewalls matches the width of the slot.

[0011] Compared with the prior art, the wheel beam structure at the bottom of the elevator provided by this utility model completely hides the two traction wheels at both ends of the crossbeam, avoiding the traction wheels occupying space below the wheel beam, thereby increasing the descent space of the car, shortening the length of the elevator shaft, and improving the space utilization of the floors. Attached Figure Description

[0012] Figure 1 A schematic diagram of the wheel beam structure at the bottom of the elevator provided by this utility model.

[0013] Figure 2 for Figure 1 An exploded view of the wheel beam structure at the bottom of the elevator. Detailed Implementation

[0014] The specific embodiments of this utility model are described in further detail below. It should be understood that the description of the embodiments of this utility model herein is not intended to limit the scope of protection of this utility model.

[0015] like Figure 1 The diagram shown is a structural schematic of the wheel beam structure at the bottom of the elevator provided by this utility model. The wheel beam structure at the bottom of the elevator includes a crossbeam 10 disposed at the bottom of the elevator, at least two reinforcing ribs 20 disposed on the crossbeam 10, and two traction wheels 30 respectively disposed at both ends of the crossbeam 10. It is conceivable that the wheel beam structure at the bottom of the elevator also includes other functional modules, such as welding modules, screw modules, traction ropes, etc., which are technologies known to those skilled in the art and will not be described in detail here.

[0016] Please see Figure 2The crossbeam 10 has a U-shaped cross-section along its length, with its two sidewalls protruding outwards to form two wall grooves 11. The two wall grooves 11 are used to strengthen the structural strength of the crossbeam 10 and prevent bending deformation when supporting the elevator.

[0017] Four connecting plates 12 are respectively provided at both ends of the crossbeam 10 along its sidewalls, and the four connecting plates 12 are arranged in pairs at both ends of the crossbeam 10. A cover plate 13 is provided on two of the connecting plates 12, and the two sidewall edges of the cover plate 13 extend and flip up towards the connecting plates 12 for welding and fixing to the connecting plates 12 by a welding module. A baffle 14 is provided on the side of the cover plate 13 near the crossbeam 10 that protrudes towards the connecting plates 12. The two sides of the baffle 14 abut against the opposite sidewalls of the two connecting plates 12, thus forming an accommodating chamber with two side openings between the two connecting plates 12, the cover plate 13, and the baffle 14 to accommodate the traction sheave 30.

[0018] An arc-shaped groove is provided on the connecting plate 12, so that the two ends of the traction wheel 30 are respectively mounted in the grooves on the two connecting plates 12.

[0019] At least four slots 15 are respectively provided at both ends of the crossbeam 10 near the connecting plate 12. The four slots 15 are arranged in pairs and are used to insert the reinforcing ribs 20 to fix the reinforcing ribs 20 to the crossbeam 10. A clearance area is provided at the inner edge of the facing sides of two corresponding slots 15 to avoid the inner chamfer of the reinforcing ribs 20. The connection method between the reinforcing ribs 20 and the crossbeam 10 will be described below.

[0020] The reinforcing rib 20 has a U-shaped cross-section along its length, and the width of its two side walls matches the width of the slot 15. Two reinforcing ribs 20 are inserted into four slots 15 and welded together using a welding module. Several screw holes are spaced apart on the side of the reinforcing rib 20 facing the elevator, allowing the wheel beam to be fixed to the bottom of the elevator using screws.

[0021] The main function of the traction sheave 30 is to transmit power through friction with the traction steel wire rope, thereby driving the elevator car and counterweight. A connecting shaft 31 protrudes from both sides of the traction sheave 30, and this connecting shaft 31 is fixedly mounted in the arc-shaped grooves of the two connecting plates 12. The traction rope passes through a receiving cavity with two side openings on the traction sheave 30. Since the traction sheave 30 is completely housed within the receiving cavity formed between the two connecting plates 12, the cover plate 13, and the baffle 14—that is, the tangent of the traction sheave 30 on the side away from the cover plate 13 lies within this receiving cavity—the two traction sheaves 30 are thus hidden at both ends of the crossbeam 10. This increases the descent space of the car 10, thereby shortening the length of the elevator shaft and improving the space utilization of the floors.

[0022] Compared with the prior art, the wheel beam structure at the bottom of the elevator provided by this utility model completely hides the two traction wheels 30 at both ends of the crossbeam 10, avoiding the traction wheels 30 occupying space under the wheel beam, thereby increasing the descent space of the car 10, shortening the length of the elevator shaft, and improving the space utilization of the floors.

[0023] The above are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Any modifications, equivalent substitutions or improvements within the spirit of the present utility model are covered within the scope of the claims of the present utility model.

Claims

1. A wheel beam structure at the bottom of an elevator, characterized in that: The wheel beam structure at the bottom of the elevator includes a crossbeam at the bottom of the elevator, at least two reinforcing ribs on the crossbeam, and two traction wheels at both ends of the crossbeam. Four connecting plates protrude from the side walls of the two ends of the crossbeam, and the four connecting plates are arranged in pairs at both ends of the crossbeam. An arc-shaped groove is formed on the connecting plate. A connecting shaft protrudes from both sides of the traction wheel and is fixedly mounted in the arc-shaped grooves of the two connecting plates. The two traction wheels are located at both ends of the crossbeam.

2. The wheel beam structure at the bottom of the elevator according to claim 1, characterized in that: The crossbeam has a U-shaped cross section along its length, with its two side walls protruding outwards to form two wall grooves.

3. The wheel beam structure at the bottom of the elevator according to claim 1, characterized in that: A cover plate is provided on the two connecting plates, and the two side wall edges of the cover plate extend upward toward the connecting plates.

4. The wheel beam structure at the bottom of the elevator according to claim 3, characterized in that: A baffle is provided on the side of the cover plate near the crossbeam, protruding toward the connecting plate. The two sides of the baffle abut against the opposite sidewalls of the two connecting plates.

5. The wheel beam structure at the bottom of the elevator according to claim 1, characterized in that: At least four slots are provided at each end of the crossbeam near the connecting plate, and the four slots are spaced apart from each other.

6. The wheel beam structure at the bottom of the elevator according to claim 5, characterized in that: A clearance zone is provided at the inner wall edge of the two corresponding slots facing each other.

7. The wheel beam structure at the bottom of the elevator according to claim 5, characterized in that: The reinforcing rib has a U-shaped cross-section along its length, and the width of its two sidewalls matches the width of the slot.

Images