Vibration reduction components, vibration reduction devices and brakes

Abstract

The present invention relates to a vibration reduction assembly, a vibration reduction device and a brake. The vibration reduction assembly according to the present invention is used for a brake for an elevator traction machine, wherein the vibration reduction assembly comprises at least one elastic element, at least two bases and a shell encapsulating the at least one elastic element and the at least two bases, and two of the at least two bases respectively have a portion extending out of the shell.

Description

Technical Field

[0001] The present invention relates to a vibration reduction assembly used for a brake for an elevator traction machine, a vibration reduction device having the vibration reduction assembly, and a brake for an elevator traction machine having the vibration reduction device. Background Art

[0002] Due to the mechanical structure and working principle of the elevator traction machine brake, it will inevitably produce working noise when it is in action. The source of the noise is two situations: First, the brake coil loses power, the iron core assembly is relatively immobile, and due to the elastic force of the brake spring, the armature assembly will be pushed away by the spring, and the brake pad assembly on the armature assembly will contact the brake wheel, generating braking noise. Second, the brake coil is energized, the iron core assembly is relatively immobile, and due to the electromagnetic force, the armature assembly is attracted to the iron core assembly, generating noise. This noise is generated by the collision of metal and metal. Therefore, adding a buffer noise reduction device between the iron core assembly and the armature assembly in the brake can effectively reduce the attraction noise, which is a very necessary measure.

[0003] At present, the buffer device in the brake of the traction machine is generally a non-adjustable rubber silencer pad. However, due to the limitation of rubber material, after the brake works for a period of time, the silencer pad will inevitably produce some compression, and the compressed surface will also be aged. The aged silencer pad will produce noise when the brake is working, and this noise will affect the lives of residents in the building. The performance of the silencer pad is also very different under different ambient temperatures. Therefore, how to improve the vibration reduction performance of the brake has become a common problem for the current brake designers. The brake silencer assembly structure currently used in the market is often located inside the brake and is not adjustable or removable. Therefore, after the brake is used for a long time, the noise will inevitably become louder. If the damaged silencer assembly is to be replaced, the maintenance personnel generally have to disassemble the brake to replace it. This operation method is very inconvenient for the maintenance personnel to operate on site. Summary of the invention

[0004] In view of the above technical problems, the present invention aims to propose a brake buffer vibration reduction structure, which is convenient for adjusting and disassembling the vibration reduction assembly, effectively reducing the action noise of the brake, and improving the operating reliability of the brake. To this end, the present invention proposes a vibration reduction assembly, which is used for a brake for an elevator traction machine, characterized in that the vibration reduction assembly has at least one elastic element, at least two bases and a shell encapsulating the at least one elastic element and the at least two bases, and two of the at least two bases respectively have a portion extending out of the shell.

[0005] The vibration reduction assembly according to the present invention has a structure that is easy to adjust and reliable, and is convenient for maintenance workers to replace and inspect on site, thereby ensuring that the elevator can operate normally and safely.

[0006] Advantageously, the vibration reduction assembly comprises a metal elastic element, and two ends of the metal elastic element are respectively fixedly connected to the two bases.

[0007] Preferably, one of the two bases has a guide column, and the other base has a guide groove for guiding the guide column, wherein the metal elastic element is mounted on the guide column.

[0008] Advantageously, the vibration reduction assembly comprises a non-metallic elastic element, and two ends of the non-metallic elastic element are respectively fixedly connected to the two bases.

[0009] Advantageously, the elastic element comprises a metal elastic element and a non-metal elastic element, and the metal element and the non-metal elastic element are arranged in series in the housing.

[0010] Preferably, one end of each of the metal elastic element and the non-metal elastic element is fixedly connected to opposite end faces of the same base, and the other end of each of the metal elastic element and the non-metal elastic element is fixedly connected to two other bases.

[0011] Preferably, the two other bases have different fitting clearances relative to the inner wall of the housing.

[0012] Advantageously, the housing is made of light-transmitting nylon or plastic.

[0013] Preferably, the packaging according to the present invention is an integral packaging, which means that the housing packages the entire vibration damping assembly as a component that cannot be disassembled and can be replaced as a whole.

[0014] Advantageously, the metal elastic element is a disc spring, a wave spring or a cylindrical spring.

[0015] Advantageously, the non-metallic elastic element is molded from rubber or a damping material.

[0016] Preferably, the damping material is polyurethane.

[0017] According to another aspect of the present invention, a vibration reduction device is provided, which is used for a brake for an elevator traction machine. The vibration reduction device includes the vibration reduction assembly according to the present invention.

[0018] Advantageously, the vibration damping device comprises an adjusting screw and a locking nut, wherein the vibration damping assembly is accommodated in a first cavity of the iron core assembly of the brake, the adjusting screw is accommodated in a second cavity of the iron core assembly of the brake and extends out of the second cavity with its first end, and the locking nut is threadedly connected to the first end, wherein the locking nut abuts against the end face of the iron core assembly and closes the second cavity, wherein the vibration damping assembly contacts the armature assembly of the brake at one end and contacts the second end of the adjusting screw which is different from the first end at the other end.

[0019] The vibration reduction device according to the present invention can make the brake vibration reduction structure more reliable, effectively reduce the noise of the brake operation, and facilitate subsequent adjustment and replacement.

[0020] According to yet another aspect of the present invention, a brake for an elevator traction machine is provided, which has a vibration damping device according to the present invention.

[0021] The brake according to the invention accordingly has the advantages of the damping device according to the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The following describes in detail the embodiments of the vibration reduction device according to the present invention with reference to the accompanying drawings.

[0023] Figure 1 A vibration reduction device for an elevator traction machine brake according to the present invention is shown, wherein a part of the brake is shown;

[0024] Figure 2 Show Figure 1 A first embodiment of the vibration damping assembly;

[0025] Figure 3 Show Figure 1 A second embodiment of the vibration damping assembly;

[0026] Figure 4 Show Figure 1 A third embodiment of the vibration damping assembly.

[0027] In the figures, identical or functionally identical components are provided with the same reference symbols. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with specific embodiments and corresponding drawings.

[0029] Figure 1 The vibration reduction device for an elevator traction machine brake according to the present invention is shown, wherein a part of the brake is shown. Figure 1As can be seen in the figure, the brake for the elevator traction machine has an armature assembly 1 and a core assembly 3. The brake can be operated in a manner known in the art. The vibration reduction device includes a vibration reduction assembly 2, an adjustment screw 5 and a locking nut 4.

[0030] The core assembly 3 is constructed to be hollow. The damping assembly 2 is accommodated in the first cavity inside the core assembly 3 via the first mounting hole of the core assembly 3, and one end face of the damping assembly 2 is in contact with the armature assembly 1. The adjusting screw 5 is accommodated in the second cavity inside the core assembly 3 and extends from the end of the core assembly 3 away from the armature assembly 1 through the second mounting hole of the core assembly 3. The locking nut 4 is screwed on the end of the adjusting screw 5 extending from the core assembly 3. As a result, the locking nut 4 is abutted against the end side of the core assembly 3 and closes the second cavity.

[0031] exist Figure 1 In the embodiment, the first cavity and the second cavity are connected. The end of the adjusting screw 5 facing away from the locking nut 4 is abutted against the end of the vibration reduction assembly 2 facing away from the armature assembly 1. The second cavity at least partially has an internal thread corresponding to the external thread of the adjusting screw 5, so that the adjusting screw 5 adjusts its position along the axial direction of the internal thread inside the close-fitting assembly through the combined action of the internal thread and the external thread. After the adjusting screw 5 is adjusted to the expected position, the locking nut 4 is tightened to fix the adjusting screw 5. In this way, the vibration reduction device can be adjusted and the function of reducing noise can be achieved.

[0032] Figure 2 Show Figure 1 A first embodiment of a vibration damping assembly. Figure 2 The vibration reduction assembly 2 shown in the figure is a two-stage vibration reduction assembly, which includes a first base 21, a second base 23, a third base 26, a metal elastic element 22 and a non-metallic elastic element 25. The vibration reduction assembly 2 also has a shell 24 for its overall packaging, so that the vibration reduction assembly 2 can be installed and removed as a whole as a component. One end of the first base 21 extends beyond the outer surface of the shell 24, which is used for the vibration reduction assembly 2 to contact the armature assembly 1. One end of the third base 26 also extends beyond the outer surface of the shell 24, which is used for the vibration reduction assembly 2 to abut against the adjustment screw 5. It can also be imagined that the end of the first base 21 extending from the shell 24 is configured for the vibration reduction assembly 2 to abut against the adjustment screw 5, and the end of the third base 26 extending from the shell 24 is configured for the vibration reduction assembly 2 to contact the armature assembly 1. The shell 24 can be made of nylon or engineering plastics, so that the shell 24 has light transmittance, wear resistance and high temperature resistance. When the brake is operating at a high frequency and the temperature rises, the shell 24 can not be worn or deformed to affect the operation of the brake. In addition, maintenance personnel can observe the working status of the internal parts of the vibration reduction assembly 2 through the outer shell 24, so as to replace the vibration reduction assembly 2 with a new one in time when necessary.

[0033] As in Figure 2 As can be seen in the figure, the first base 21 has a shoulder section, which is adjacent to one end of the first base 21 extending out of the housing 24 and abuts against the inner wall of the housing 24 along the axial direction of the internal thread. The shoulder section has a first gap relative to the inner wall of the housing 24 in the radial direction of the internal thread. The first base 21 also has a guide column, which is adjacent to the shoulder section. The second base 23 is arranged between the first base 21 and the third base 26 and has a guide groove facing the first base 21, and the guide groove works together with the guide column of the first base 21 to play a guiding role. The metal elastic element 22 is installed on the guide column, and one end abuts against the first base 21 and the other end abuts against the second base 23. The metal elastic element 22 can use a disc spring, a wave spring or an ordinary cylindrical spring. When a disc spring is used, it can be connected in series or in parallel or in combination with series and parallel to provide elastic force and displacement as required.

[0034] As in Figure 2 As can be seen in the figure, the third base 26 also has a shoulder section, which is adjacent to one end of the third base 26 extending out of the shell 24 and abuts against the inner wall of the shell 24 along the axial direction of the internal thread. The shoulder section has a second gap relative to the inner wall of the shell 24 in the radial direction of the internal thread. The first gap and the second gap can have different sizes, so as to ensure that at least one of the first base 21 and the third base 26 can move relative to the shell 24. The non-metallic elastic element 25 is arranged between the second base 23 and the third base 26, and one end abuts against the second base 23 and the other end is fixed on the third base 26. The non-metallic elastic element 25 can be made of rubber, especially high-strength rubber, and can be made of damping materials such as polyurethane materials. The non-metallic elastic element 25 can be molded and has a certain tensile strength and hardness.

[0035] When the brake is actuated, both ends of the vibration-damping assembly 2 are compressed, the distances between the first base 21, the third base 26 and the second base 23 become smaller, the non-metallic elastic element 25 and the metal elastic element 22 are compressed, and the vibration-damping assembly 2 as a whole generates elastic force, thereby reducing vibration and buffering when the armature assembly 1 and the core assembly 3 are in contact, thereby significantly reducing the noise generated by the collision between the armature assembly 1 and the core assembly 3 when the brake is engaged.

[0036] According to the first mode of the present invention, the metal elastic element 22 and the non-metal elastic element 25 are arranged in series in the housing. The non-metal elastic element 25 has a small elastic coefficient, a short service life, and is greatly affected by temperature, but has a good vibration absorption effect on high-frequency impacts. The metal elastic element 22 has a large elastic coefficient and is not affected by temperature, but has a poor vibration absorption effect. By using the non-metal elastic element 25 and the metal elastic element 22 in the vibration reduction assembly 2 at the same time, a synergistic effect can be achieved, which not only ensures the effective operation of the vibration reduction assembly 2, but also improves the noise reduction performance of the vibration reduction assembly 2, thereby improving the reliable operation of the brake. It is also conceivable that the metal elastic element 22 and the non-metal elastic element 25 are arranged in series in the housing in other ways, for example, there are more than one metal elastic element 22 and / or non-metal elastic element 25, and there can also be different numbers of bases accordingly, as long as the advantages of the vibration reduction assembly according to the present invention can be produced synergistically. Figure 3 Show Figure 1 A second embodiment of the vibration damping assembly. Figure 3 The vibration reduction assembly 2 in the embodiment is a primary vibration reduction assembly, which includes a first base 21, a second base 23 and a metal elastic element 22. The vibration reduction assembly 2 also has a housing 24 for its overall packaging, so that the vibration reduction assembly 2 can be installed and removed as a whole as a component. The arrangement of the first base 21, the second base 23 and the metal elastic element 22 in the housing 24 is similar to that of the first embodiment. Only the differences from the first embodiment are described here.

[0037] One end of the second base 23 extends out of the housing 24. The second base 23 has a shoulder section, which is adjacent to the end of the second base 23 extending out of the housing 24 and abuts against the inner wall of the housing 24 in the axial direction of the internal thread. The shoulder section has a second gap relative to the inner wall of the housing 24 in the radial direction of the internal thread. It can be imagined that the end of the first base 21 extending out of the housing 24 is configured for contact between the vibration damping assembly 2 and the armature assembly 1, while the end of the second base 23 extending out of the housing 24 is configured for abutment between the vibration damping assembly 2 and the adjusting screw 5, or vice versa, the end of the first base 21 extending out of the housing 24 is configured for abutment between the vibration damping assembly 2 and the adjusting screw 5, while the end of the second base 23 extending out of the housing 24 is configured for contact between the vibration damping assembly 2 and the armature assembly 1.

[0038] Figure 4 Show Figure 1 A third embodiment of the vibration damping assembly. Figure 4The vibration reduction assembly 2 in the embodiment is also a primary vibration reduction assembly, which includes a second base 23, a third base 26 and a non-metallic elastic element 25. The vibration reduction assembly 2 also has a housing 24 for its overall packaging, so that the vibration reduction assembly 2 can be installed and removed as a whole as a component. The arrangement of the second base 23, the third base 26 and the non-metallic elastic element 25 in the housing 24 is similar to that of the first embodiment. Only the differences from the first embodiment are described here.

[0039] One end of the second base 23 extends out of the housing 24. The second base 23 has a shoulder section, which is adjacent to the end of the second base 23 extending out of the housing 24 and abuts against the inner wall of the housing 24 in the axial direction of the internal thread. The shoulder section has a first gap relative to the inner wall of the housing 24 in the radial direction of the internal thread. It is conceivable that the end of the second base 23 extending out of the housing 24 is configured for contact between the vibration damping assembly 2 and the armature assembly 1, while the end of the third base 26 extending out of the housing 24 is configured for abutment between the vibration damping assembly 2 and the adjusting screw 5, or vice versa, the end of the second base 23 extending out of the housing 24 is configured for abutment between the vibration damping assembly 2 and the adjusting screw 5, while the end of the third base 26 extending out of the housing 24 is configured for contact between the vibration damping assembly 2 and the armature assembly 1. Here, the second base 23 and the third base 26 can be configured as components of the same or different shapes.

[0040] The above description of the specific exemplary embodiments of the present invention is presented for the purpose of illustration and description. The foregoing description is not intended to be exhaustive, nor is it intended to limit the present invention to the precise form disclosed, and it is clear that many changes and variations are possible based on the above teachings. The exemplary embodiments are selected and described in order to explain the specific principles of the present invention and its practical application, so that other technical personnel in the field can realize and utilize various exemplary embodiments of the present invention and various selected forms and modified forms thereof. The scope of the present invention is intended to be limited by the appended claims and their equivalent forms.

Claims

1. A vibration reduction assembly for a brake for an elevator traction machine, characterized in that: The vibration reduction assembly comprises at least one elastic element, at least two bases and a housing encapsulating the at least one elastic element and the at least two bases, wherein two of the at least two bases respectively have a portion extending out of the housing; Wherein, the two bases having the portion extending out of the housing respectively have a shoulder section, the shoulder section is adjacent to one end of the base extending out of the housing and abuts against the inner wall of the housing along the axial direction of the internal thread; At least two bases are arranged as three, at least one elastic element is arranged as two, the two elastic elements include a metal elastic element and a non-metal elastic element, the metal elastic element and the non-metal elastic element are arranged in series in the shell, and one end of each of the metal elastic element and the non-metal elastic element is fixedly connected to the opposite end surface of the same base, and the other end of each of the metal elastic element and the non-metal elastic element is fixedly connected to two other bases, and the two other bases have different fitting clearances relative to the inner wall of the shell, so that at least one of the two bases having a portion extending out of the shell can move relative to the shell.

2. The vibration reduction assembly according to claim 1, characterized in that: The three bases are respectively a first base, a second base and a third base, the first base has a guide column, the second base has a guide groove for guiding the guide column, wherein the metal elastic element is mounted on the guide column.

3. The vibration reduction assembly according to claim 2, characterized in that: Two ends of the non-metallic elastic element are fixedly connected to the second base and the third base respectively.

4. The vibration reduction assembly according to claim 3, characterized in that: The first base and the third base have different matching clearances relative to the inner wall of the housing.

5. The vibration reduction assembly according to any one of claims 1 to 4, characterized in that: The shell is made of light-transmitting nylon or plastic.

6. The vibration reduction assembly according to any one of claims 1 to 4, characterized in that: The package is an integral package.

7. The vibration reduction assembly according to claim 1, characterized in that: The metal elastic element is a disc spring, a wave spring or a cylindrical spring.

8. The vibration reduction assembly according to claim 1, characterized in that: The non-metallic elastic element is molded from rubber or damping material.

9. The vibration reduction assembly according to claim 8, characterized in that: The damping material is polyurethane.

10. A vibration reduction device used for a brake for an elevator traction machine, the vibration reduction device comprising the vibration reduction assembly according to any one of claims 1 to 9.

11. The vibration damping device according to claim 10, characterized in that: The vibration damping device includes an adjusting screw and a locking nut, wherein the vibration damping assembly is accommodated in a first cavity of the iron core assembly of the brake, the adjusting screw is accommodated in a second cavity of the iron core assembly of the brake and extends out of the second cavity with its first end, and the locking nut is threadedly connected to the first end, wherein the locking nut is abutted against the end face of the iron core assembly and closes the second cavity, wherein the vibration damping assembly contacts the armature assembly of the brake at one end and contacts the second end of the adjusting screw which is different from the first end at the other end.

12. A brake used for an elevator traction machine, the brake comprising the vibration reduction device according to claim 10 or 11.

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