A down rope elevator rope sheave shock absorption system

Abstract

The utility model discloses a kind of rope return freight elevator rope wheel damping systems, including car bottom (1) and the two rope wheel beams (2) of parallel arrangement located below car bottom (1), the both ends of rope wheel beam (2) are rotatably connected with rope return pulley (3), multiple shock-absorbing rubber pads (4) are equipped between car bottom (1) and rope wheel beam (2), the top of rope wheel beam (2) is equipped with at least two first bolt (5), and clearance is formed between first bolt (5) and car bottom (1);The correction device (6) of at least two connecting car bottom (1) is equipped in the width direction both sides of rope wheel beam (2), and correction device (6) includes the U-shaped plate (7) fixed with rope wheel beam (2), the inside of U-shaped plate (7) is equipped with the correction frame (8) fixed with car bottom (1).The utility model has the advantages of good damping effect and low maintenance frequency on the basis of ensuring safety.

Description

Technical Field

[0001] This utility model belongs to the field of freight elevators, and in particular relates to a shock absorption system for a bottom return rope freight elevator pulley. Background Technology

[0002] A bottom-returning rope freight elevator refers to a freight elevator where the return rope sheave is located at the bottom of the car (referred to as the car floor). Two parallel rope sheave beams are installed below the car floor, with return rope sheaves rotatably connected to both ends of each beam. To reduce car vibration, multiple shock-absorbing pads are installed between the car floor and the rope sheave beams. To limit the relative position of the car and the rope sheave beams, bolts passing through the shock-absorbing pads connect the car floor and the rope sheave beams, creating a rigid connection between them. This significantly reduces the shock-absorbing effect of the shock-absorbing pads. Utility Model Content

[0003] The purpose of this invention is to provide a shock absorption system for the pulley of a freight elevator with a return rope. This invention, while ensuring safety, has the advantages of good shock absorption and low maintenance frequency.

[0004] The technical solution of this utility model is: a shock absorption system for a freight elevator with a return rope, including a car bottom and two parallel rope beams located below the car bottom. Both ends of the rope beams are rotatably connected to return rope wheels. Multiple shock-absorbing rubber pads are provided between the car bottom and the rope beams. At least two first bolts are provided on the top of the rope beams, and a gap is formed between the first bolts and the car bottom. The rope sheave beam has at least two correction devices connected to the car bottom on both sides of its width. The correction device includes a U-shaped plate fixed to the rope sheave beam, and a correction frame fixed to the car bottom is provided on the inner side of the U-shaped plate.

[0005] In the aforementioned shock absorption system of the return rope freight elevator sheave, three shock-absorbing pads are provided between the car bottom and the sheave beam, two of which are located at both ends of the sheave beam, and the other is located in the middle of the sheave beam.

[0006] In the aforementioned shock absorption system for the return rope freight elevator pulley, the first bolt is provided with two first nuts, one of which is welded to the pulley beam, and the other is used to lock the first bolt. The upper end of the first bolt is provided with a strike plate.

[0007] In the aforementioned shock absorption system for the return rope freight elevator sheave, the bottom of the car floor is provided with a guide rail perpendicular to the sheave beam, and a groove is provided on the bottom surface of the guide rail. The top of the correction frame is provided with a second bolt, the head of the second bolt is located in the groove, the second bolt passes through the correction frame and is provided with a second nut, and multiple correction pads are provided on the correction frame near the U-shaped plate.

[0008] Compared with the prior art, the present invention makes the following improvements to the existing shock absorption system: First, in the vertical direction, the rope wheel beam is connected to the car floor only through the shock-absorbing rubber pads, which achieves a flexible connection. The shock-absorbing rubber pads play a full role and have a good shock absorption effect.

[0009] Secondly, bolts are installed on the rope sheave beam to maintain a certain distance from the car floor, preventing excessive tilting angle of the car floor and improving safety. At the same time, the maximum compression of the shock-absorbing rubber pads is limited, which increases the service life of the shock-absorbing rubber pads and reduces the maintenance frequency.

[0010] Third, a correction device is installed between the sheave beam and the car floor. The correction device will not affect the vertical movement of the car, but it can limit the relative position between the sheave beam and the car in the horizontal direction, ensuring that the car will not detach from the sheave beam. On the basis of ensuring safety, it avoids excessive deformation of the shock-absorbing pads in the horizontal direction, improves the service life of the shock-absorbing pads, and reduces the maintenance frequency.

[0011] In summary, this utility model, while ensuring safety, has the advantages of good shock absorption and low maintenance frequency. Attached Figure Description

[0012] Figure 1 This is a structural schematic diagram of the present invention at a single rope wheel beam.

[0013] Figure 2 This is a front view schematic diagram of the rope pulley beam.

[0014] Figure 3 yes Figure 1 Enlarged view at point A.

[0015] Figure 4 This is a top view of the calibration device.

[0016] Figure 5 This is a left-side view of the rope pulley beam.

[0017] The markings in the attached diagram are as follows: 1-Car floor, 2-Rope wheel beam, 3-Return rope wheel, 4-Shock-absorbing rubber pad, 5-First bolt, 6-Correction device, 7-U-shaped plate, 8-Correction frame, 9-First nut, 10-Guide rail, 11-Slide groove, 12-Second bolt, 13-Second nut, 14-Correction rubber pad, 15-Bump plate. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0019] Example: A shock absorption system for a bottom-returning freight elevator pulley, such as Figure 1As shown, the car includes a car floor 1 and two parallel rope sheave beams 2 located below the car floor 1. Both ends of the rope sheave beams 2 are rotatably connected to return rope sheaves 3. Three shock-absorbing rubber pads 4 are provided between the car floor 1 and the rope sheave beams 2. Two of the shock-absorbing rubber pads 4 are located at the two ends of the rope sheave beams 2, and the other shock-absorbing rubber pad 4 is located in the middle of the rope sheave beams 2. The car floor 1 and the rope sheave beams 2 are both fixed to the shock-absorbing rubber pads 4.

[0020] The top of the rope sheave beam 2 is provided with four first bolts 5, and two first nuts 9 are provided on the first bolts 5. The lower first nut 9 is welded and fixed to the rope sheave beam 2. The threaded end of the first bolt 5 passes through the rope sheave beam 2 and is screwed into the lower first nut 9. The upper first nut 9 locks the first bolt 5 to prevent it from rotating. A gap is formed between the first bolt 5 and the car bottom 1. The upper end of the first bolt 5 is provided with a collision plate 15, which is used to increase the collision area between the first bolt 5 and the car bottom 1.

[0021] Two correction devices 6 connected to the car bottom 1 are provided on both sides of the rope sheave beam 2 in the width direction. The correction device 6 includes a U-shaped plate 7 fixed to the rope sheave beam 2, and a correction frame 8 fixed to the car bottom 1 is provided on the inner side of the U-shaped plate 7.

[0022] The bottom of the car floor 1 is provided with a guide rail 10 perpendicular to the rope sheave beam 2. A groove 11 is provided on the bottom surface of the guide rail 10. A second bolt 12 is provided on the top of the alignment frame 8. The head of the second bolt 12 is located within the groove 11. The second bolt 12 passes through the alignment frame 8 and is fitted with a second nut 13. After the second nut 13 is tightened, the alignment frame 8 is fixed to the guide rail 10. The head of the second bolt 12 can move within the groove 11, which is suitable for fixing rope sheave beams 2 of different widths at the bottom of the car floor 1.

[0023] The calibration frame 8 is provided with four calibration pads 14, two of which are close to the bottom surface of the U-shaped plate 7, and the other two are close to the two inner sidewalls of the U-shaped plate 7 respectively.

[0024] Working principle: Vertically, the car bottom 1 is connected to the rope wheel beam 2 via shock-absorbing rubber pads 4. The car bottom 1 and rope wheel beam 2 are flexibly connected, and the shock-absorbing rubber pads 4 effectively absorb the vibration of the car, resulting in good shock absorption. To prevent excessive tilting of the car, the tilt angle is limited by the first bolt 5. When the car tilts to a certain degree, it contacts the impact plate 15 on the corresponding first bolt 5. This also prevents the shock-absorbing rubber pads 5 from being over-compressed, extending their service life. After loosening the first nut 9 on the upper side, the first bolt 5 can be rotated to change the gap between the car bottom 1 and the impact plate 15, thereby changing the maximum allowable tilt angle of the car, which is easy to adjust.

[0025] The correction device limits the horizontal relative displacement between the sheave beam 2 and the car bottom 1. When the shock-absorbing pad 4 is subjected to shear stress during elevator operation, it will deform horizontally. When the deformation exceeds the allowable range, the correction pad 14 in the correction device will push against the U-shaped plate 7 to prevent the shock-absorbing pad 4 from exceeding the allowable deformation, extend the service life of the shock-absorbing pad 4, and also prevent the risk of the wire rope coming out of the return sheave 3 due to excessive relative displacement of the sheave beam 2.

[0026] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

Claims

1. A shock-absorbing system for a freight elevator with a return rope, comprising a car bottom (1) and two parallel rope sheave beams (2) located below the car bottom (1), wherein both ends of the rope sheave beams (2) are rotatably connected to return rope sheaves (3), characterized in that: Multiple shock-absorbing rubber pads (4) are provided between the car bottom (1) and the rope wheel beam (2), and at least two first bolts (5) are provided on the top of the rope wheel beam (2), forming a gap between the first bolts (5) and the car bottom (1); The rope sheave beam (2) is provided with at least two correction devices (6) connected to the car bottom (1) on both sides of the width direction. The correction device (6) includes a U-shaped plate (7) fixed to the rope sheave beam (2) and a correction frame (8) fixed to the car bottom (1) on the inner side of the U-shaped plate (7).

2. The shock absorption system for the lower return rope freight elevator pulley according to claim 1, characterized in that: Three shock-absorbing pads (4) are provided between the car bottom (1) and the rope wheel beam (2), two of which are located at the two ends of the rope wheel beam (2) and the other is located in the middle of the rope wheel beam (2).

3. The shock absorption system for the lower return rope freight elevator pulley according to claim 1, characterized in that: The first bolt (5) is provided with two first nuts (9), one of which is welded to the rope wheel beam (2), and the other is used to lock the first bolt (5). The upper end of the first bolt (5) is provided with a strike plate (15).

4. The shock absorption system for the lower return rope freight elevator pulley according to claim 1, characterized in that: The bottom of the car bottom (1) is provided with a guide rail (10) perpendicular to the rope wheel beam (2). The bottom surface of the guide rail (10) is provided with a groove (11). The top of the correction frame (8) is provided with a second bolt (12). The head of the second bolt (12) is located in the groove (11). The second bolt (12) passes through the correction frame (8) and is provided with a second nut (13). The correction frame (8) is provided with a plurality of correction pads (14) close to the U-shaped plate (7).

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