Roller damping structure of roller guide

Abstract

This invention relates to a roller damping structure for a roller guide shoe, mounted on a swing arm support rod. A damping limit stop is located on the swing arm support rod, away from the guide shoe body support frame. A damping sleeve is interference-fitted onto the swing arm support rod, and a compression spring is interference-fitted onto the outside of the damping sleeve. The ends of the compression spring and the damping sleeve respectively act on the swing arm supporting the roller assembly and the damping limit stop. The damping sleeve is a hollow cylindrical structure formed by irregularly winding multiple strands of metal wire. The contact interfaces between the wires allow for relative displacement, causing relative slippage and interlocking between the wires under axial compression. This novel damping sleeve, in conjunction with the compression spring, constitutes a composite buffer-damping element. Under axial compression and radial interlocking conditions, the damping sleeve undergoes relative slippage, and the multi-point contact between the metal wires generates stable frictional energy dissipation, thereby creating a damping effect and providing smooth and comfortable operation for the elevator.

Description

Technical Field

[0001] This utility model relates to the field of guide shoe technology, specifically to a roller shock absorption structure for a roller guide shoe. Background Technology

[0002] Guide shoes, mounted on the car frame and in direct contact with the guide rails, ensure the car moves precisely along the rails and suppresses or weakens vibrations transmitted from the elevator to the car frame and car, thus guaranteeing the stability, comfort, and safety of the elevator. During elevator operation, the car and counterweight move up and down along the guide rails, with the roller guide shoes providing guidance and vibration damping. Existing roller guide shoe damping structures use springs axially arranged on the swing arm support rods to cushion the rollers and suppress their vibration. However, because they only possess elastic energy storage and release characteristics and lack energy dissipation capabilities, when the rollers are impacted or the guide rails are uneven, impact and vibration noise still occur between the rollers and the guide rails, affecting the smoothness and comfort of the elevator operation. Some improved solutions use damping to dissipate the energy generated by the spring force, gradually reducing the vibration amplitude. Currently, the damping solutions used are electromagnetic damping to suppress roller vibration, but electromagnetic damping is usually complex in structure and expensive. Utility Model Content

[0003] To address the aforementioned problems, this utility model proposes a roller damping structure for roller guide shoes. It employs a hollow damping sleeve wound with steel wire combined with a compression spring. The spring compression and friction / interlocking between the steel wires create a synergistic clamping force and damping energy dissipation, thereby stabilizing the roller's contact with the guide rail and suppressing the swing arm vibration.

[0004] To achieve the above objectives, the following technical solution is adopted: a roller damping structure for a roller guide shoe, installed on a swing arm support rod, characterized in that it includes a damping sleeve, a compression spring, and a damping limit stop.

[0005] The damping limit stop is located on the swing arm support rod and away from the guide shoe body support frame. The damping sleeve is interference-fitted onto the swing arm support rod. The compression spring is interference-fitted onto the damping sleeve. The two ends of the compression spring and the damping sleeve act on the swing arm supporting the roller assembly and the damping limit stop, respectively.

[0006] The damping sleeve is a hollow cylindrical structure formed by irregular winding of multiple metal wires. There are contact interfaces between the wires that can be relatively displaced. Its inner diameter is adapted to the swing arm support rod, and its outer diameter is adapted to the inner diameter of the compression spring, so that the wires can slide and interlock relative to each other when axially compressed.

[0007] Furthermore, the damping sleeve uses stainless steel wire.

[0008] Furthermore, the diameter of the metal wire is 0.15–0.50 mm.

[0009] Furthermore, the volume fraction porosity of the damping sleeve is 30%–70%.

[0010] Furthermore, the interference gap between the outer diameter of the damping sleeve and the inner diameter of the compression spring is 0.05-0.30 mm to improve the friction between the metal wires when the damping sleeve is under pressure.

[0011] Furthermore, the damping limit stop restricts axial movement under force by a locking nut installed on the swing arm support rod.

[0012] The beneficial effects of this invention are as follows: This invention incorporates a damping sleeve on the swing arm support rod. This damping sleeve is a hollow cylindrical structure formed by the irregular winding of multiple strands of metal wire. There are contact interfaces between the wires that allow for relative displacement. The damping sleeve, in conjunction with a compression spring, constitutes a composite buffer-damping element. The spring provides axial clamping force to maintain the roller's contact with the guide rail. Under axial compression and radial clamping conditions, the damping sleeve undergoes relative slippage. Multiple points of contact between the metal wires generate stable frictional energy dissipation, thus forming equivalent damping related to displacement and speed. This provides compliant contact in the small displacement region and nonlinear vibration suppression in the large displacement region, providing smooth and comfortable elevator operation. Compared with existing technologies, the damping sleeve used in this invention has higher durability and fatigue resistance, a longer lifespan than rubber-based damping elements, and a simpler structure than electromagnetic damping, reducing failure points and significantly saving costs. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of a roller guide shoe structure;

[0015] Figure 3 This is the front view of the damping sleeve;

[0016] Figure 4 This is a schematic diagram of the cross-section of the damping sleeve.

[0017] As shown in the figure: 1. Guide shoe body support frame; 2. Swing arm support rod; 3. Swing arm limit rod; 4. Limit nut; 5. Swing arm; 6. Limit buffer pad; 7. Damping sleeve; 8. Compression spring; 9. Damping limit stop; 10. Locking nut; 50. Mounting base. Detailed Implementation

[0018] Example 1

[0019] The following description, in conjunction with the accompanying drawings, further illustrates that this embodiment... Figure 2The illustration shows a roller guide shoe with a roller shock absorption structure provided by this invention. The guide shoe body support frame 1 is equipped with a swing arm support rod 2 for supporting the swing arm's swing and a swing arm limiting rod 3 for limiting the swing arm's position. A limiting nut 4 is provided on the swing arm limiting rod 3. A mounting seat 50 for mounting the roller assembly is provided on the swing arm 5. The swing arm 5 is mounted on the swing arm support rod 2 and the swing arm limiting rod 3. A limiting buffer pad 6 is provided between the swing arm 5 and the limiting nut 4. Figure 1 As shown, the roller damping structure of the roller guide shoe provided by this invention is installed on the swing arm support rod 2, and includes a damping sleeve 7, a compression spring 8, and a damping limit stop 9.

[0020] like Figure 3 As shown in Figure 4, the damping sleeve 7 is a hollow cylindrical structure formed by irregularly winding multiple strands of metal wire. There are contact interfaces between the wires that allow for relative displacement. Its inner diameter is adapted to the swing arm support rod 2, and its outer diameter is adapted to the inner diameter of the compression spring 8, causing relative slippage and interlocking between the wires under axial compression. The metal wire used in the damping sleeve 7 is stainless steel wire with a wire diameter of 0.15–0.50 mm. During the manufacturing process, the volume fraction porosity of the damping sleeve 7 is controlled to be 30%–70%.

[0021] The damping limit stop 9 is set on the swing arm support rod 2 and away from the guide shoe body support frame 1. A locking nut 10 is set on the swing arm support rod 2 to limit the axial movement of the damping limit stop 9 after being subjected to force. The damping sleeve 7 is fitted onto the swing arm support rod 2 with an interference fit. The compression spring 8 is fitted onto the outside of the damping sleeve 7 with an interference fit. The two ends of the compression spring 8 and the damping sleeve 7 act on the swing arm 5 and the damping limit stop 9 of the support roller assembly, respectively. The interference gap between the outer diameter of the damping sleeve 7 and the inner diameter of the compression spring 8 is 0.05-0.30mm to improve the friction between the metal wires of the damping sleeve 7 when it is compressed.

[0022] During elevator car operation, the friction between the rollers of the roller guide shoe and the guide rail forces the rollers to drive the swing arm 5 to move axially. The compression spring 8 is axially compressed to provide cushioning for the swing arm 5, reducing the lateral vibration of the rollers and the swing arm 5. During the compression of the compression spring 8, the metal wires of the damping sleeve 7 undergo relative slippage and interlocking, forming frictional energy dissipation, gradually reducing the vibration amplitude of the rollers and the swing arm 5, and finally allowing the roller guide shoe to quickly stabilize when impacted by the guide rail. The function of the damping sleeve 7 is to increase the energy dissipation process between the compression spring 8 and the swing arm 5, converting some mechanical energy into heat energy and dissipating it, effectively dissipating the energy generated by the compression spring 8 when providing cushioning, thereby reducing vibration and noise, and achieving the purpose of improving the smoothness and comfort of elevator operation.

[0023] This utility model is not limited to this embodiment. Any equivalent concept or modification within the technical scope disclosed in this utility model shall be included in the protection scope of this utility model.

Claims

1. A roller damping structure of a roller guide shoe mounted to a swing arm support rod (2), characterized by, Includes a damping sleeve (7), a compression spring (8), and a damping limit stop (9). The damping limit stop (9) is set on the swing arm support rod (2) and away from the guide shoe body support frame (1). The damping sleeve (7) is interference-fitted onto the swing arm support rod (2). The compression spring (8) is interference-fitted onto the damping sleeve (7). The two ends of the compression spring (8) and the damping sleeve (7) act on the swing arm (5) and the damping limit stop (9) of the support roller assembly, respectively. The damping sleeve (7) is a hollow cylindrical structure formed by irregular winding of multiple strands of metal wires. There are contact interfaces between the wires that can be relatively displaced. Its inner diameter is adapted to the swing arm support rod (2), and its outer diameter is adapted to the inner diameter of the compression spring (8), so that the wires can slide and interlock relative to each other when subjected to axial pressure.

2. The roller damping structure of a roller guide shoe according to claim 1, characterized by The damping sleeve (7) uses stainless steel wire.

3. The roller damping structure of a roller guide shoe according to claim 2, characterized by The diameter of the metal wire is 0.15-0.50 mm.

4. The roller damping structure of a roller guide shoe according to claim 3, characterized by The volume fraction porosity of the damping sleeve (7) is 30%–70%.

5. The roller damping structure of the roller guide shoe according to claim 4, characterized in that, The interference gap between the outer diameter of the damping sleeve (7) and the inner diameter of the compression spring (8) is 0.05-0.30 mm to improve the friction between the metal wires when the damping sleeve is compressed.

6. The roller damping structure of a roller guide shoe according to any one of claims 1 to 5, characterized in that The damping limit stop (9) is restricted from axial movement after being subjected to force by the locking nut (10) installed on the swing arm support rod (2).

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