A noise reduction device for a machine-roomless elevator traction machine

Abstract

The present application discloses a noise reduction device for a machine roomless elevator traction machine in the field of elevator technology, which includes a noise reduction box. The noise reduction box includes an inner box and an outer box, and there is a cavity between the inner box and the outer box. A plurality of avoidance channels are provided at the bottom of the inner box, and the avoidance channels extend from the bottom of the inner box to the outer bottom of the outer box. A support frame is provided in one of the avoidance channels, and the support frame is used to fix the traction machine on the top of the car. A plurality of elastic pieces are fixedly connected to the support frame. One end of each elastic piece away from the support frame passes through the channel wall of the avoidance channel and is located in the cavity, and the cavity is filled with clear water. In this solution, through the support frame and the elastic pieces as a medium, the vibration generated by the traction machine is transmitted to the clear water in the cavity, and the water is caused to fluctuate by the elastic pieces. In this way, the clear water absorbs the vibration force of the elastic pieces, reduces the vibration force generated by the traction machine, and further reduces the noise generated due to the vibration of the traction machine.

Description

Technical Field

[0001] The present invention relates to the technical field of elevators, and particularly relates to a noise reduction device for a traction machine of a machine-roomless elevator. Background Art

[0002] A machine-roomless elevator refers to an elevator that does not require a building to provide a dedicated enclosed machine room for installing equipment such as an elevator drive host, a control cabinet, and a speed limiter. Since a machine-roomless elevator does not require a machine room, it can help a building save a lot of space, enabling architects to be more flexible and convenient when designing a building and giving designers more design space. Since a machine-roomless elevator has no machine room, this can undoubtedly save a lot of construction costs.

[0003] The traction machine of a machine-roomless elevator is generally placed on the car top and connected through a guide wheel in the hoistway, so the noise is generally relatively large. Reducing the noise of the traction machine can reduce the impact on users and improve the usage perception of the elevator. Therefore, there is an urgent need for a noise reduction device for a traction machine of a machine-roomless elevator. Summary of the Invention

[0004] The present invention aims to provide a noise reduction device for a traction machine of a machine-roomless elevator to reduce the noise of the traction machine.

[0005] To solve the above technical problems, the present invention provides the following technical solution: A noise reduction device for a traction machine of a machine-roomless elevator, including a noise reduction box. The noise reduction box includes an inner box and an outer box, and there is a closed cavity between the inner box and the outer box. A plurality of avoidance channels are provided at the bottom of the inner box, and the avoidance channels extend from the bottom of the inner box to the outer bottom of the outer box. A support frame is provided in one of the avoidance channels, and the support frame is used to fix the traction machine on the car top. A plurality of elastic pieces are fixedly connected to the support frame, and one end of each elastic piece away from the support frame passes through the channel wall of the avoidance channel and is located in the cavity, and the cavity is filled with clear water.

[0006] The working principle of the present invention: When in use, the traction machine is fixed on the support frame. At this time, the traction machine is located in the inner box. When the traction machine operates, since the noise of the traction machine is caused by its vibration during operation, and the traction machine is fixed on the support frame, and a plurality of elastic pieces are fixedly connected to the support frame, and one end of each elastic piece away from the support frame passes through the channel wall of the avoidance channel and is located in the cavity, and the cavity is filled with clear water. Therefore, the vibration generated when the traction machine operates is transmitted to the elastic pieces through the support frame. At this time, the elastic pieces start to vibrate due to the over-vibration force transmitted through the support frame, and when the elastic pieces vibrate, they drive the clear water to jump, so that the vibration force of the elastic pieces is absorbed by the clear water.

[0007] Advantages of the present invention: In this solution, the vibration generated by the traction machine is transmitted to the clear water in the cavity through the support frame and the elastic piece. The elastic piece causes the water to fluctuate, so that the clear water absorbs the vibration force of the elastic piece, reducing the vibration force generated by the traction machine, and further reducing the noise generated by the vibration of the traction machine.

[0008] Further, a sealing ring is provided between each elastic piece and the channel wall of the avoidance channel. The purpose is to prevent water from flowing out through the gap between the elastic piece and the channel wall of the avoidance channel through the sealing ring.

[0009] Further, the elastic piece is a copper elastic piece. The purpose is that the copper elastic piece has good elasticity and is not easily damaged due to metal fatigue.

[0010] Further, a sponge is provided in the cavity, and the sponge is located at the water surface. The purpose is that with the superposition of the vibration force, it may cause the water surface to jump, and thus generate water noise due to the jumping of the water surface. Therefore, a sponge is provided at the water surface in the cavity, and the jumping water is absorbed through the water absorption of the sponge, thus avoiding the water noise generated when the jumping water falls back to the water surface.

[0011] Further, the lower surface of the sponge is inclined, and the lowest point of the lower surface of the sponge contacts the cavity wall. The purpose is that after the sponge absorbs water, the water in the sponge flows along its inclined lower surface to the lowest point of the sponge under the action of gravity, then flows from the lowest point of the sponge to the cavity wall, and then flows back to the clear water in the cavity along the cavity wall. In this way, the water in the sponge can flow back to the clear water without generating noise.

[0012] Further, a water inlet pipe is provided at the top of the outer box, and the bottom end of the water inlet pipe passes through the outer box and extends into the cavity. The purpose is that this setting facilitates the injection or pumping of water into the cavity. Description of the Drawings

[0013] Figure 1 It is a schematic structural diagram of an embodiment of a noise reduction device for a traction machine of a machine-roomless elevator according to the present invention. Detailed Embodiment

[0014] The following is a further detailed description through specific embodiments:

[0015] The reference numerals in the accompanying drawings of the specification include: outer box 1, sponge 2, clear water 3, inner box 4, traction machine 5, elastic piece 6, sealing ring 7, support frame 8, avoidance channel 9.

[0016] The embodiment is basically as shown in the attached Figure 1 shown:

[0017] A noise reduction device for a machine-roomless elevator traction machine, comprising a noise reduction box. The noise reduction box includes an inner box 4 and an outer box 1. There is a closed cavity between the inner box 4 and the outer box 1. A water inlet pipe is provided at the top of the outer box 1. The bottom end of the water inlet pipe passes through the outer box 1 and extends into the cavity. Two avoidance channels 9 are provided at the bottom of the inner box 4. The two avoidance channels 9 extend from the bottom of the inner box 4 to the outer bottom of the outer box 1. A support frame 8 is provided in one of the avoidance channels 9. The support frame 8 is used to fix the traction machine 5 on the top of the car. A plurality of copper shrapnel 6 are fixedly connected to the support frame 8. One end of each shrapnel 6 away from the support frame 8 passes through the channel wall of the avoidance channel 9 and is located in the cavity. A sealing ring 7 is provided between each shrapnel 6 and the channel wall of the avoidance channel 9. The cavity is filled with clear water 3. A sponge 2 is provided in the cavity. The sponge 2 is fixed on the cavity wall of the cavity. The sponge 2 is located at the water surface. The lower surface of the sponge 2 is inclined, and the lowest point of the lower surface of the sponge 2 contacts the cavity wall. The other avoidance channel (not shown in the figure) is for the steel wire rope on the traction wheel to pass through.

[0018] The specific implementation process is as follows:

[0019] During use, the traction machine 5 is fixed on the support frame 8. At this time, the traction machine 5 is located in the inner box 4. When the traction machine 5 operates, since the noise of the traction machine 5 is caused by its vibration during operation, and the traction machine 5 is fixed on the support frame 8, and a plurality of shrapnel 6 are fixedly connected to the support frame 8, and one end of each shrapnel 6 away from the support frame 8 passes through the channel wall of the avoidance channel 9 and is located in the cavity, and the cavity is filled with clear water 3, so the vibration generated by the traction machine 5 during operation is transmitted to the shrapnel 6 through the support frame 8. At this time, the shrapnel 6 starts to vibrate due to the over-vibration force transmitted through the support frame 8, and when the shrapnel 6 vibrates, it drives the clear water 3 to jump, so that the vibration force of the shrapnel 6 is absorbed by the clear water 3. When the clear water 3 is vibrated by the shrapnel 6 and the water surface starts to jump, the water droplets jumping out of the water level will contact the sponge 2, and the sponge 2 has water absorption, so the water droplets will be absorbed by the sponge 2 after contacting the sponge 2. At this time, the water droplets cannot drip back to the water surface, so the water droplet sound of the water droplets hitting the water surface cannot be generated, thus achieving the effect of noise reduction. After the sponge 2 absorbs water, the water in the sponge 2 flows along its inclined lower surface to the lowest point of the sponge 2 under the action of gravity, then flows from the lowest point of the sponge 2 to the cavity wall, and then flows back into the clear water 3 in the cavity along the cavity wall. In this way, the water in the sponge 2 can flow back into the clear water 3 without generating noise.

Claims

1. A noise reduction device for a machine-roomless elevator traction machine, characterized in that: It includes a noise reduction box, the noise reduction box includes an inner box and an outer box, there is a closed cavity between the inner box and the outer box, the bottom of the inner box is provided with a plurality of avoidance channels, and the avoidance channels extend from the bottom of the inner box to the outer bottom of the outer box. A support frame is provided in one of the avoidance channels, and the support frame is used to fix the traction machine on the top of the car. A plurality of elastic pieces are fixedly connected to the support frame. One end of each elastic piece away from the support frame passes through the channel wall of the avoidance channel and is located in the cavity, and the cavity is filled with clear water; a sponge is provided in the cavity, and the sponge is located at the water surface; A sealing ring is provided between each elastic piece and the channel wall of the avoidance channel; The elastic piece is a copper elastic piece; The lower surface of the sponge is inclined, and the lowest point of the lower surface of the sponge contacts the cavity wall; A water inlet pipe is provided at the top of the outer box, and the bottom end of the water inlet pipe passes through the outer box and extends into the cavity.

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