Noise reduction box and traction machine

Abstract

The utility model discloses a noise reduction box and a traction machine, which belong to the technical field of traction machines, the noise reduction box comprises a first plate, a second plate and four third plates, the first ends of the four third plates are all installed on the first plate, the second ends of the four third plates are all installed on the second plate, the first plate and the second plate are arranged oppositely, and the first plate and the second plate are arranged oppositely. A cavity is formed among the inner sides of the first plate, the second plate and the four third plates; the first plate or the second plate is provided with a plurality of first ribs and second ribs, the first ribs extend in the width direction of the first plate or the second plate, and the second ribs extend in the length direction of the first plate or the second plate; the first ribs and the second ribs are distributed in a criss-cross mode, and a plurality of silencing areas are formed. The multiple silencing areas are used for conducting isolation and differentiation treatment on sound waves of the noise reduction box, the sound waves of the noise reduction box are prevented from being overlapped, the multiple silencing areas can prevent the sound waves from generating a resonance effect, and therefore 5%-15% of noise of a noise source can be reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of traction machines, and in particular to a noise reduction box and a traction machine. Background Technology

[0002] The main function of an elevator traction system is to provide power to move the elevator car up and down within the hoistway, ensuring smooth, safe, and reliable elevator operation. The traction system is the core component of an elevator, typically consisting of a traction machine, traction steel cables, guide sheaves, and decoy sheaves. The traction machine is the elevator's power source, driving the traction sheaves to rotate via an electric motor, which in turn pulls the elevator car and counterweight up and down within the hoistway through the traction steel cables.

[0003] In existing traction machines, the stator and rotor work together to drive the rotor to rotate, which in turn drives the traction sheave shaft to rotate, causing the traction wire rope to move up and down. The traction sheave vibrates during rotation, generating low-frequency noise. Furthermore, the brakes acting on the brake discs on the traction sheave shaft during braking also produce noise, which is transmitted from both ends of the shaft. Current noise reduction methods typically involve covering the machine base with an outer shell; this method is simplistic and its noise reduction effect is relatively limited. Summary of the Invention

[0004] The purpose of this invention is to improve the existing traction machine noise reduction methods, which are limited in quantity and have only moderate noise reduction effect, and to provide a traction machine with noise reduction function.

[0005] The technical solutions for achieving the above objectives include the following:

[0006] The noise reduction box includes a first plate, a second plate, and four third plates. The first ends of the four third plates are all mounted on the first plate, and the second ends of the four third plates are all mounted on the second plate. The first plate and the second plate are arranged opposite to each other, and a cavity is formed between the inner sides of the first plate, the second plate, and the four third plates.

[0007] The first plate or the second plate has a plurality of first ribs and second ribs, the first ribs extending along the width direction of the first plate or the second plate, and the second ribs extending along the length direction of the first plate or the second plate;

[0008] Multiple first and second ribs are interwoven and distributed to form multiple noise reduction zones.

[0009] In one embodiment, the third plate has at least one third rib, the two ends of which are connected to the first plate and the second plate, respectively.

[0010] The third rib is staggered from and parallel to the first rib.

[0011] In one embodiment, the noise reduction box further includes sound insulation cotton, which is laid on the inner side of the first or second plate and is located within the sound absorption zone.

[0012] In one embodiment, mounting holes are provided at the four corners of the second plate and the third plate. The mounting holes are used for fasteners to pass through so that the second plate is fixed to the four third plates by fasteners.

[0013] This utility model also proposes a traction machine, including a support assembly, a traction wheel axle, and the aforementioned noise reduction box. The noise reduction box is installed on one side of the support assembly, and the traction wheel axle is installed on the other side of the support assembly. At least part of the traction wheel axle is located inside the noise reduction box.

[0014] In one embodiment, the support assembly includes a first support base, a second support base, a first connector, and a second connector. The first support base and the second support base are disposed opposite to each other. There are two noise reduction boxes, one of which is mounted on the first support base and the other is mounted on the second support base, and the two noise reduction boxes are disposed opposite to each other. The upper end of the first support base is fixed to the upper end of the second support base through the second connector, and the lower end of the first support base is fixed to the lower end of the second support base through the first connector.

[0015] In one embodiment, the traction machine further has two bearings, and the two ends of the traction wheel shaft are mounted on a first support and a second support via the two bearings, and the two ends of the traction wheel shaft are rotatably connected to the first support and the second support.

[0016] The second connector is located above the traction sheave shaft, and the first connector is located below the traction sheave shaft.

[0017] In one embodiment, the traction machine further includes a brake, a rotor, and a stator. The brake is mounted on a first support base, and the stator is mounted on a second support base. The brake and the stator are respectively located in two noise reduction boxes.

[0018] The rotor is sleeved on the first end of the traction wheel shaft, and the rotor is positioned close to the stator.

[0019] The second end of the traction wheel shaft has a brake disc, and the brake is engaged with the brake disc;

[0020] The two ends of the traction wheel shaft are respectively housed in two noise reduction boxes.

[0021] In one embodiment, the traction machine further includes a terminal block and at least two wires. The terminal block is mounted on one of the noise reduction boxes. The first or second connector has a wire groove. The first end of one of the wires is connected to the brake, and its second end passes through the wire groove and is connected to the terminal block. The two ends of the other wire are connected to the stator and the terminal block, respectively.

[0022] In one embodiment, the support assembly further includes a first protective plate, two second protective plates, and two second connecting members. The two ends of the first protective plate are mounted on the two second connecting members, and the first protective plate is located above the traction wheel shaft.

[0023] The two ends of the second protective plate are respectively installed on the first support base and the second support base, and the two protective plates are located on both sides of the traction wheel shaft.

[0024] The technical solution provided by this utility model has the following advantages and effects:

[0025] When the traction machine is in operation, its support components vibrate and emit low-frequency noise to the first or second plate. If the first plate is installed on the support components, then the second plate has multiple first and second ribs. The multiple first and second ribs are distributed in a crisscross pattern, forming multiple noise reduction zones. These multiple noise reduction zones are used to isolate and differentiate the sound waves from the noise reduction box, preventing the sound waves from superimposing. The multiple noise reduction zones will prevent the sound waves from resonating, thereby reducing the noise source noise by 5% to 15%. Moreover, the noise reduction box has a simple structure and strong adaptability. Attached Figure Description

[0026] The accompanying drawings illustrate specific examples of the technical solutions described in this utility model, and together with the detailed embodiments, form part of the specification, serving to explain the technical solutions, principles, and effects of this utility model.

[0027] Unless otherwise specified or defined, the same reference numerals in different figures represent the same or similar technical features, and different reference numerals may be used to represent the same or similar technical features.

[0028] Figure 1 This is a schematic diagram of a traction machine in one embodiment of the present invention;

[0029] Figure 2 This is a cross-sectional view of a traction machine in one embodiment of the present invention;

[0030] Figure 3 This is a schematic diagram of a noise reduction box in one embodiment of the present invention;

[0031] Figure 4 This is a cross-section of the noise reduction box in one embodiment of the present invention. Figure 1 ;

[0032] Figure 5 This is a cross-section of the noise reduction box in one embodiment of the present invention. Figure 2 ;

[0033] Explanation of reference numerals in the attached figures:

[0034] 100. Traction machine; 10. Noise reduction box; 101. First plate; 102. Second plate; 110. Chamber; 111. Third plate; 103. First rib; 104. Second rib; 105. Third rib; 106. Mounting hole; 107. Noise reduction area; 20. Support assembly; 201. First support base; 202. First connector; 203. Second connector; 204. Second support base; 205. First protective plate; 206. Second protective plate; 30. Traction wheel axle; 301. Brake disc; 40. Rotor; 50. Stator; 60. Bearing; 70. Brake; 80. Terminal block. Detailed Implementation

[0035] To facilitate understanding of this utility model, the specific embodiments of this utility model will be described in more detail below with reference to the accompanying drawings.

[0036] Unless otherwise specified or defined, the terms "first," "second," etc., used in this document are for distinguishing names only and do not represent a specific number or order.

[0037] Unless otherwise stated or defined, the term “and / or” as used herein includes any and all combinations of one or more of the associated listed items.

[0038] It should be noted that when a component is considered "fixed" to another component, it can be directly fixed to the other component or there can be an intervening component; when a component is considered "connected" to another component, it can be directly connected to the other component or there can be an intervening component; when a component is considered "mounted" on another component, it can be directly mounted on the other component or there can be an intervening component; when a component is considered "placed" on another component, it can be directly placed on the other component or there can be an intervening component.

[0039] This utility model proposes a noise reduction box 10, such as Figures 1 to 5As shown, the system includes a first plate 101, a second plate 102, and four third plates 111. The first ends of the four third plates 111 are all mounted on the first plate 101, and the second ends of the four third plates 111 are all mounted on the second plate 102. The first plate 101 and the second plate 102 are arranged opposite to each other, and a cavity 110 is formed between the inner sides of the first plate 101, the second plate 102, and the four third plates 111. The first plate 101 or the second plate 102 has multiple first ribs 103 and second ribs 104. The first ribs 103 extend along the width direction of the first plate 101 or the second plate 102, and the second ribs 104 extend along the length direction of the first plate 101 or the second plate 102. The multiple first ribs 103 and the multiple second ribs 104 are crisscrossed and form multiple silencing zones 107.

[0040] Specifically, the first plate 101 or the second plate 102 is installed on the support assembly 20 of the traction machine 100. When the traction machine 100 is in operation, its support assembly 20 vibrates and emits low-frequency noise to the first plate 101 or the second plate 102. If the first plate 101 is installed on the support assembly 20, then the second plate 102 is provided with multiple first ribs 103 and multiple second ribs 104. The multiple first ribs 103 and multiple second ribs 104 are crisscrossed and form multiple noise reduction zones 107. The multiple noise reduction zones 107 are used to isolate and differentiate the sound waves of the noise reduction box 10, so as to avoid the superposition of the sound waves of the noise reduction box 10. The multiple noise reduction zones 107 will avoid the resonance effect of the sound waves, thereby reducing the noise source by 5% to 15%. Moreover, the noise reduction box 10 has a simple structure and strong adaptability.

[0041] In some embodiments, such as Figures 3 to 5 As shown, the third plate 111 has at least one third rib 105, with both ends of the third rib 105 connected to the first plate 101 and the second plate 102, respectively. The third rib 105 is staggered from and parallel to the first rib 103. Specifically, the third rib 105 is used to increase the structural strength of the third plate 111 and improve the stability of the noise reduction box 10. The staggered arrangement of the third rib 105 and the first rib 103, along with the area formed by the third rib 105 and the inner wall of the third plate 111, can further differentiate the sound waves, further preventing the sound waves of the noise reduction box 10 from superimposing and improving the noise reduction effect.

[0042] Preferably, the noise reduction box 10 also includes sound-absorbing cotton, which is laid on the inner side of the first plate 101 or the second plate 102 and is located within the sound-absorbing 107. Specifically, one of the main functions of the sound-absorbing cotton is to reduce sound wave reflection. When sound waves encounter a hard surface, they tend to reflect, forming echoes or reverberation, which can amplify noise. The sound-absorbing cotton has a porous structure that absorbs sound waves, thereby reducing reflection. This absorption helps reduce reverberation and echoes, further reducing noise propagation. Therefore, using sound-absorbing cotton can effectively reduce sound wave reflection, thereby further improving the sound insulation effect of the noise reduction box 10.

[0043] Preferred, such as Figures 3 to 5 As shown, mounting holes 106 are provided at the four corners of the second plate 102 and the third plate 111. The mounting holes 106 are for fasteners to pass through, so that the second plate 102 is fixed to the four third plates 111 by the fasteners. Specifically, the mounting holes 106 are for fasteners to pass through, so that the fasteners fix the second plate 102 to the third plates 111, thereby improving the overall stability of the noise reduction box 10; or the second plate 102 can also be fixed to the side wall of the support assembly 20.

[0044] like Figure 1 and Figure 2 As shown, this utility model also proposes a traction machine 100, including a support assembly 20, a traction sheave shaft 30, and the aforementioned noise reduction box 10. The noise reduction box 10 is installed on one side of the support assembly 20, and the traction sheave shaft 30 is installed on the other side of the support assembly 20. The traction sheave shaft 30 is at least partially located within the noise reduction box 10. Specifically, the support assembly 20 is used to support the stable rotation of the traction sheave shaft 30. The traction sheave shaft 30 has a rope groove, and when the traction sheave shaft 30 rotates, it pulls the car up and down through the traction rope. Moreover, the noise reduction box 10 is disposed on the support assembly 20, and the traction sheave shaft 30 is at least partially located within the noise reduction box 10. The noise generated by the traction sheave shaft 30 is processed by the noise reduction box 10, thereby reducing the noise of the traction sheave shaft 30 during rotation.

[0045] In some embodiments, the support assembly 20 includes a first support base 201, a second support base 204, a first connector 202, and a second connector 203. The first support base 201 and the second support base 204 are disposed opposite to each other. There are two noise reduction boxes 10, one of which is mounted on the first support base 201 and the other is mounted on the second support base 204, and the two noise reduction boxes 10 are disposed opposite to each other. The upper end of the first support base 201 is fixed to the upper end of the second support base 204 through the second connector 203, and the lower end of the first support base 201 is fixed to the lower end of the second support base 204 through the first connector 202. Specifically, the first support 201 and the second support 204 are fixed together by the first connector 202 and the second connector 203 to improve the overall stability of the support assembly 20. Two noise reduction boxes 10 are respectively set on the first support 201 and the second support 204 to reduce the propagation of low-frequency sound waves on the first support 201 and the second support 204, thereby further reducing the noise of the traction machine 100.

[0046] Preferably, the traction machine 100 also has two bearings 60. The two ends of the traction sheave shaft 30 are mounted on the first support base 201 and the second support base 204 via the two bearings 60, and the two ends of the traction sheave shaft 30 are rotatably connected to the first support base 201 and the second support base 204. A second connecting member 203 is disposed above the traction sheave shaft 30, and a first connecting member 202 is disposed below the traction sheave shaft 30. Specifically, using bearings 60 can reduce the frictional resistance of the traction sheave shaft 30 on the first support base 201 and the second support base 204, improving the smoothness of the rotation of the traction sheave shaft 30. The first connecting member 202, disposed below the traction sheave shaft 30, improves the stability of the connection between the first support base 201 and the second support base 204 at the lower end. The second connecting member 203, disposed above the traction sheave shaft 30, improves the stability of the connection between the first support base 201 and the second support base 204 at the upper end.

[0047] Preferably, the traction machine 100 further includes a brake 70, a rotor 40, and a stator 50. The brake 70 is mounted on a first support 201, and the stator 50 is mounted on a second support 204. The brake 70 and the stator 50 are respectively located within two noise reduction boxes 10. The rotor 40 is sleeved on the first end of the traction sheave shaft 30, and the rotor 40 and the stator 50 are positioned close to each other. The second end of the traction sheave shaft 30 has a brake disc 301, and the brake 70 cooperates with the brake disc 301. Both ends of the traction sheave shaft 30 are respectively located within two noise reduction boxes 10. Specifically, the brake 70 is located within one of the noise reduction boxes 10. The brake 70 is used to cooperate with the brake disc 301. When braking, the brake disc 301 also generates noise due to frictional vibration, which is reduced by the noise reduction box 10. The stator 50 is located in another noise reduction box 10, and the rotor 40 is sleeved on the first end of the traction wheel shaft 30. The two ends of the traction wheel shaft 30 are respectively set in two noise reduction boxes 10. When the traction wheel shaft 30 rotates, the two ends of the traction wheel shaft 30 rotate and generate vibration. The noise reduction box 10 can differentiate the sound waves emitted by the rotation position of the traction wheel shaft 30 and reduce the noise of the traction machine 100.

[0048] Preferably, the traction machine 100 also has a terminal block 80 and at least two wires. The terminal block 80 is installed on one of the noise reduction boxes 10. The first connector 202 or the second connector 203 has a wire groove. The first end of one wire is connected to the brake 70, and its second end passes through the wire groove and is connected to the terminal block 80. The two ends of the other wire are connected to the stator 50 and the terminal block 80, respectively. Specifically, by providing a wire groove on the first connector 202 or the second connector 203, one wire passes through the wire groove and its two ends are connected to the brake 70 and the terminal block 80, respectively. By placing the terminal block 80 on one side, the junction box of the traction machine 100 can accommodate the wires of the brake 70 and the rotor 40, which facilitates wiring at one end of the traction machine 100 and avoids wiring from both ends of the traction machine 100 for assembly, improving the assembly convenience of the traction machine 100 and making the installation space of the traction machine 100 more flexible.

[0049] Preferably, the support assembly 20 further includes a first protective plate 205, two second protective plates 206, and two second connecting members 203. The two ends of the first protective plate 205 are mounted on the two second connecting members 203, and the first protective plate 205 is located above the traction sheave shaft 30. The two ends of the second protective plates 206 are respectively mounted on the first support base 201 and the second support base 204, and the two second protective plates 206 are located on both sides of the traction sheave shaft 30. Specifically, the first protective plate 205 is used to protect the top of the traction sheave shaft 30, preventing external debris from falling onto the traction sheave shaft 30 and affecting its normal operation. The two second protective plates 206 are used to protect the sides of the traction sheave shaft 30, preventing the impact force generated after the traction rope breaks from damaging other components of the traction machine 100. Furthermore, the first protective plate 205 and the second protective plate 206 can also isolate or block the noise generated by the traction sheave shaft 30, further reducing the noise of the traction machine 100.

[0050] When referencing drawings, new features are explained. To avoid redundant references to drawings that would make the description less concise, features already described will not be referenced again on the drawings if the description is clear.

[0051] The purpose of the above embodiments is to reproduce and derive the technical solution of this utility model by way of example, and to fully describe the technical solution, purpose and effect of this utility model. The purpose is to enable the public to have a more thorough and comprehensive understanding of the disclosed content of this utility model, and it is not intended to limit the protection scope of this utility model.

[0052] The above embodiments are not an exhaustive list based on the present invention, and there may be other embodiments not listed. Any substitutions and improvements made without departing from the concept of the present invention are within the protection scope of the present invention.

Claims

1. A noise-canceling box, characterized in that, It includes a first plate, a second plate, and four third plates. The first ends of the four third plates are all mounted on the first plate, and the second ends of the four third plates are all mounted on the second plate. The first plate and the second plate are arranged opposite to each other, and a cavity is formed between the inner sides of the first plate, the second plate, and the four third plates. The first plate or the second plate has a plurality of first ribs and second ribs, the first ribs extending along the width direction of the first plate or the second plate, and the second ribs extending along the length direction of the first plate or the second plate; Multiple first and second ribs are interwoven and distributed to form multiple noise reduction zones.

2. The noise reduction box as described in claim 1, characterized in that, The third plate has at least one third rib, and the two ends of the third rib are respectively connected to the first plate and the second plate; The third rib is staggered from and parallel to the first rib.

3. The noise reduction box as described in claim 1, characterized in that, The noise reduction box also has sound insulation cotton, which is laid on the inner side of the first or second plate and is located in the sound absorption zone.

4. The noise reduction box as described in claim 2, characterized in that, The second and third plates each have mounting holes at their four corners. These mounting holes are for fasteners to pass through, so that the second plate can be fixed to the four third plates by fasteners.

5. A traction machine, characterized in that, The device includes a support assembly, a traction wheel axle, and a noise reduction box as described in any one of claims 1 to 4, wherein the noise reduction box is mounted on one side of the support assembly, the traction wheel axle is mounted on the other side of the support assembly, and the traction wheel axle is at least partially located inside the noise reduction box.

6. The traction machine as described in claim 5, characterized in that, The support assembly includes a first support base, a second support base, a first connector, and a second connector. The first support base and the second support base are arranged opposite to each other. There are two noise reduction boxes, one of which is mounted on the first support base and the other is mounted on the second support base, and the two noise reduction boxes are arranged opposite to each other. The upper end of the first support base is fixed to the upper end of the second support base through the second connector, and the lower end of the first support base is fixed to the lower end of the second support base through the first connector.

7. The traction machine as described in claim 6, characterized in that, The traction machine also has two bearings. The two ends of the traction wheel shaft are mounted on the first support and the second support via the two bearings. The two ends of the traction wheel shaft are rotatably connected to the first support and the second support. The second connector is located above the traction sheave shaft, and the first connector is located below the traction sheave shaft.

8. The traction machine as described in claim 7, characterized in that, The traction machine also includes a brake, a rotor, and a stator. The brake is mounted on a first support base, and the stator is mounted on a second support base. The brake and the stator are respectively located in two noise reduction boxes. The rotor is sleeved on the first end of the traction wheel shaft, and the rotor is positioned close to the stator. The second end of the traction wheel shaft has a brake disc, and the brake is engaged with the brake disc; The two ends of the traction wheel shaft are respectively housed in two noise reduction boxes.

9. The traction machine as described in claim 8, characterized in that, The traction machine also has a wiring terminal and at least two wires. The wiring terminal is installed on one of the noise reduction boxes. The first or second connector has a wire groove. The first end of one of the wires is connected to the brake, and its second end passes through the wire groove and is connected to the wiring terminal. The two ends of the other wire are connected to the stator and the wiring terminal, respectively.

10. The traction machine as described in claim 7, characterized in that, The support assembly also has a first protective plate, two second protective plates, and two second connecting members. The two ends of the first protective plate are mounted on the two second connecting members, and the first protective plate is located above the traction wheel shaft. The two ends of the second protective plate are respectively installed on the first support base and the second support base, and the two protective plates are located on both sides of the traction wheel shaft.

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