Power device capable of recycling energy and descending escalator

Abstract

The utility model relates to a power device capable of recovering energy and a descending escalator, the power device is applied to the descending escalator and can provide upward acting force for the descending escalator, the power device comprises an elevator track, a power generation stator and a power generation rotor, and the elevator track moves obliquely and downwards along with operation of the descending escalator; the power generation stator is fixed beside an elevator track and has a certain distance from the elevator track; the power generation rotor is fixed to the elevator track or rotates around the power generation rotor along with movement of the elevator track, so that the power generation rotor can move or rotate relative to the power generation stator, and the power generation rotor cuts the magnetic field of the power generation stator and generates power. By the adoption of the scheme, it is avoided that an additional driving device is arranged for the descending escalator to avoid rapid changes of dynamic potential energy of the descending escalator while power generation is conducted, the energy-saving effect is achieved, in conclusion, upward acting force is provided for the descending escalator through the structure capable of conducting power generation, power consumption is reduced, and power generation can be conducted.

Description

Technical Field

[0001] The utility model relates to the technical field of escalators, in particular to a power device capable of energy recovery and a downward escalator. Background Art

[0002] Escalators are widely used in shopping malls, subways, stations and other places due to their convenience and safety. However, during the operation of an escalator, when the escalator moves upward, kinetic energy is provided by the elevator power equipment. When moving downward or the track moving downward, due to its own gravity, a downward gravitational potential energy will be generated. To ensure the normal operation of the elevator, equipment is needed to prevent the rapid change of this dynamic potential energy - allowing the elevator to move downward slowly, that is, equipment is needed to provide an upward force to control the change of the elevator's gravitational potential energy.

[0003] Solutions in the prior art: In the existing technology, an electric motor is usually used as the power source, and a stable rotational speed is generated by the rotation of the electric motor. Whether moving upward or downward, whether carrying many people or no one, it outputs stably. This results in excessive energy consumption for the electric motor and a greater test of the reliability of the rotating machine. Summary of the Utility Model

[0004] Based on this, a power device capable of energy recovery and a downward escalator are provided to solve the problem in the prior art that to provide an upward acting force for the downward moving handrail, an additional electric motor needs to be set up for control, resulting in high energy consumption of the downward moving handrail.

[0005] On the one hand, the utility model provides a power device capable of energy recovery. The power device is applied to a downward escalator and can provide an upward acting force for the downward escalator. The power device includes:

[0006] An elevator track, which moves obliquely downward as the downward escalator operates;

[0007] A power generation stator, which is fixed beside the elevator track and has a certain distance from the elevator track;

[0008] A power generation rotor, which is fixed on the elevator track or rotates around the power generation rotor as the elevator track moves, so that the power generation rotor can move or rotate relative to the power generation stator, so as to cut the magnetic field of the power generation stator and generate electricity.

[0009] Based on the above technical solutions, the utility model can also be improved as follows.

[0010] In some embodiments, the power generation rotor is fixed on the elevator track. The power generation rotor includes:

[0011] The first cutting teeth are provided in plurality and protrude towards the power generation stator.

[0012] In some embodiments, the first cutting teeth are rectangular protrusions, and the first cutting teeth are arranged at equal intervals.

[0013] In some embodiments, the first cutting teeth are long strip-shaped protrusion structures. One end of the first cutting teeth in the length direction is fixed to the elevator track belt, and the other end of the first cutting teeth in the length direction protrudes towards the power generation stator.

[0014] In some embodiments, the power generation rotor rotatably surrounds the outer periphery of the power generation stator. The outer wall of the power generation rotor forms a clamping structure or an abutting structure with the elevator track belt, so that the power generation rotor rotates around the power generation stator with the linear movement of the elevator track belt.

[0015] In some embodiments, the elevator track belt includes:

[0016] The first connecting teeth protrude towards the power generation stator;

[0017] The power generation rotor includes:

[0018] The second connecting teeth are arranged on the outer wall of the power generation rotor, and the second connecting teeth mesh with the first connecting teeth.

[0019] In some embodiments, the power generation rotor further includes:

[0020] The second cutting teeth protrude towards the power generation stator, and the second cutting teeth can cut the magnetic field of the power generation stator.

[0021] In some embodiments, the second cutting teeth are rectangular strip structures, and the second cutting teeth are arranged along the radial direction of the power generation stator.

[0022] In some embodiments, the second cutting teeth are arranged at uniform intervals. The second connecting teeth are arranged along the axial direction of the power generation stator, and the second cutting teeth and the second connecting teeth are arranged in a back-to-back manner.

[0023] On the other hand, the present utility model further provides a downward escalator. In some embodiments, it includes a power device capable of energy recovery.

[0024] The beneficial effects of the present utility model are as follows: By arranging a power device beside the elevator track, when the downward escalator operates, the elevator track will move in an obliquely downward direction along with the downward movement of the elevator; the power generation rotor and the power generation stator generate electricity by cutting the magnetic field. When generating electricity by cutting the magnetic field, the power generation rotor will be subjected to a resistance force in the opposite direction of its movement direction. Since the power for the movement or rotation of the power generation rotor comes from the elevator track, that is, the power generation rotor will transfer this reverse resistance force to the elevator track. That is to say, when the elevator track moves in an obliquely downward direction, it will be subjected to a continuous and stable acting force that hinders its downward movement. This acting force is beneficial to slowing down the running speed of the elevator, thereby improving the stability of taking the elevator; thus, through the solution of this application, it is avoided to set an additional driving device for the downward escalator to avoid the sharp change of the dynamic potential energy of the downward escalator, achieving an energy-saving effect. This application also provides an upward acting force for the downward escalator by means of additional power generation, not only reducing energy consumption, but also being able to generate electricity and store energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic structural diagram of a power device capable of energy recovery in Embodiment 1;

[0026] Figure 2 is a schematic structural diagram of a power device capable of energy recovery in Embodiment 2;

[0027] Figure 3 is a schematic structural diagram of a downward escalator.

[0028] In the drawings, the components represented by the reference numerals are as follows:

[0029] 10, elevator track; 11, first connecting tooth; ]

[0030] 20, power generation stator;

[0031] 30, power generation rotor; 31, first cutting tooth; 32, second connecting tooth; 33, second cutting tooth. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] In order to make the purpose, technical solutions and advantages of this application clearer, the following further describes this application in detail with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not used to limit this application.

[0033] A power device capable of energy recovery, see Figures 1-3, the power device is applied to a downward escalator and can provide an upward acting force to the downward escalator. The power device includes an elevator track 10, a power generation stator 20, and a power generation rotor 30. The elevator track 10 moves obliquely downward as the downward escalator operates; the power generation stator 20 is fixed beside the elevator track 10 and has a certain distance from the elevator track 10; the power generation rotor 30 is fixed on the elevator track 10 or rotates around the power generation rotor 30 as the elevator track 10 moves, so that the power generation rotor 30 can move or rotate relative to the power generation stator 20, so as to cut the magnetic field of the power generation stator 20 and generate electricity.

[0034] With the above technical solution, by arranging a power device beside the elevator track 10, when the downward escalator operates, the elevator track 10 will move obliquely downward along with the downward movement of the elevator; the power generation rotor 30 and the power generation stator 20 generate electricity by cutting the magnetic field. When generating electricity by cutting the magnetic field, the power generation rotor 30 will be subjected to a resistance force in the opposite direction of its movement. Since the power for the movement or rotation of the power generation rotor 30 comes from the elevator track 10, that is, the power generation rotor 30 will transfer this reverse resistance force to the elevator track 10. That is to say, when the elevator track 10 moves in the obliquely downward direction, it will be subjected to a continuous and stable acting force that hinders its downward movement. This acting force is beneficial to slowing down the running speed of the elevator, thereby improving the stability of elevator riding; thus, through the solution of this application, it is avoided to set an additional driving device for the downward escalator to avoid the sharp change of the dynamic potential energy of the downward escalator, achieving an energy-saving effect. This application also provides an upward acting force for the downward escalator by means of additional power generation, not only reducing energy consumption, but also being able to generate electricity and store energy.

[0035] Specifically, there are two ways to fix the power generation rotor 30 to the elevator track 10. One is that the power generation rotor 30 is directly fixed on the elevator track 10, and the elevator track 10 directly drives the power generation rotor 30 to move downward, so that the power generation rotor 30 moves relative to the power generation stator 20, so that the power generation rotor 30 cuts the magnetic field of the power generation stator 20, and thus generates electricity; the other is that the elevator track 10 drives the power generation rotor 30 to rotate. The connection method between the elevator track 10 and the power generation rotor 30 can be a gear engagement to drive the power generation rotor 30 to rotate, or it can also be in mutual contact and drive the power generation rotor 30 to rotate through friction, or other implementable mechanical connection structures are also acceptable. Through the above connection, the power generation rotor 30 rotates around the motor stator as the elevator track 10 moves downward, so that the power generation rotor 30 cuts the magnetic field of the power generation rotor 30, and thus generates electricity.

[0036] In some embodiments, refer to Figure 1, the power generation rotor 30 is fixed on the elevator track 10. The power generation rotor 30 includes first cutting teeth 31. There are multiple first cutting teeth 31 and they protrude towards the direction of the power generation stator 20. In this way, the power generation rotor 30 is directly fixed on the elevator track 10. The movement of the elevator track 10 drives the movement of the power generation rotor 30, so that the first cutting teeth 31 of the power generation rotor 30 move along the obliquely downward direction of the elevator track 10. Thus, the first cutting teeth 31 cut the magnetic field of the motor stator during operation. While generating electricity, the power generation rotor 30 receives an obliquely upward acting force, that is, the elevator track 10 receives an obliquely upward acting force, which is opposite to the running direction of the elevator track 10, making the running speed of the elevator track 10 slower and more stable.

[0037] In some embodiments, referring to Figure 1 , the first cutting teeth 31 are rectangular protrusions, and the first cutting teeth 31 are arranged at equal distances. In this way, by arranging the first cutting teeth 31 at equal distances, the cutting speed of the first cutting teeth 31 for the magnetic field is balanced, that is, the reaction forces received by the power generation rotor 30 and the elevator track 10 are kept balanced, making the movement of the downward escalator more stable.

[0038] In some embodiments, referring to Figure 1 , the first cutting teeth 31 are long strip-shaped protrusion structures. One end in the length direction of the first cutting teeth 31 is fixed to the elevator track 10, and the other end in the length direction of the first cutting teeth 31 protrudes towards the direction of the power generation stator 20. In this way, the first cutting teeth 31 are long strip-shaped, which is convenient for extending into the magnetic field of the power generation stator 20 and cutting the magnetic field to facilitate power generation.

[0039] In some embodiments, referring to Figure 1 and Figure 2 , the power generation rotor 30 is rotatably surrounded outside the power generation stator 20. The outer wall of the power generation rotor 30 forms a clamping structure or an abutting structure with the elevator track 10, so that the power generation rotor 30 rotates around the power generation stator 20 with the linear movement of the elevator track 10. In this way, since power generation requires the power generation rotor 30 to rotate around the power generation stator 20, so that the power generation rotor 30 cuts the magnetic field for power generation. When the outer wall of the power generation rotor 30 forms a clamping structure or an abutting structure with the elevator track 10, the elevator track 10 can drive the power generation rotor 30 to rotate through both the abutting structure, such as friction; the elevator track 10 can also drive the power generation rotor 30 to rotate through the clamping structure, such as gear meshing.

[0040] In some embodiments, referring to Figure 2, the elevator track 10 includes a first connecting tooth 11 that protrudes in the direction of the power generation stator 20; the power generation rotor 30 includes a second connecting tooth 32 that is provided on the outer wall of the power generation rotor 30, and the second connecting tooth 32 meshes with the first connecting tooth 11. In this way, the second connecting tooth 32 and the first connecting tooth 11 are connected through the meshing structure of the gears, so that the downward linear motion of the elevator track 10 drives the power generation rotor 30 to rotate, thereby ensuring the stable rotation of the power generation rotor 30 and continuously generating electricity.

[0041] In some embodiments, refer to Figure 2 , the power generation rotor 30 further includes a second cutting tooth 33 that protrudes towards the power generation stator 20, and the second cutting tooth 33 can cut the magnetic field of the power generation stator 20. In this way, by providing the second cutting tooth 33 to cut the magnetic field of the power generation stator 20 and generate electricity, and the second cutting tooth 33 protrudes towards the power generation stator 20, so when the power generation rotor 30 rotates, the second cutting tooth 33 can stably cut the magnetic field, thereby generating electricity.

[0042] In some embodiments, refer to Figure 2 , the second cutting tooth 33 has a rectangular bar structure, and the second cutting teeth 33 are arranged along the radial direction of the power generation stator 20. In this way, the bar-shaped second cutting teeth 33 are arranged along the radial direction of the power generation stator 20, so that the second cutting teeth 33 can extend into the magnetic field to ensure the cutting effect on the magnetic field for easy power generation.

[0043] In some embodiments, refer to Figure 2 , the second cutting teeth 33 are arranged at equal intervals, the second connecting teeth 32 are arranged along the axial direction of the power generation stator 20, and the second cutting teeth 33 and the second connecting teeth 32 are arranged in opposite directions. In this way, by separately providing the second connecting teeth 32 and the second cutting teeth 33 on the power generation rotor 30, the second connecting teeth 32 are used to connect the elevator track 10 and drive the power generation stator 20 to rotate, and the second cutting teeth 33 are used to cut the magnetic field for power generation. The structures are separated to improve the connection stability while ensuring the cutting effect on the magnetic field.

[0044] When specifically setting, the power generation rotor 30 can be set as a hollow columnar structure, the second connecting teeth 32 are provided at one end of the power generation rotor 30 in the axial direction, and the second cutting teeth 33 are provided at the other end of the power generation rotor 30 in the axial direction. While maintaining the structural strength of the two tooth shapes in sequence, the radial size of the power generation rotor 30 can be reduced; the second connecting teeth 32 and the second cutting teeth 33 can also be arranged along the same radial direction, thereby reducing the axial length of the power generation rotor 30, but the radial size of the power generation rotor 30 needs to be increased to ensure the strength and stability of the two tooth shapes.

[0045] A downward escalator, refer to Figure 3, in some embodiments, it includes a power device capable of energy recovery. In this way, when the power device is arranged on the downward escalator, the power device can provide a stable upward acting force for the downward escalator to avoid setting an additional power device on the downward escalator, achieving an energy-saving effect; in addition, the power device also has the function of generating electricity and can be used when the elevator is running, effectively reducing the operating cost of the elevator.

[0046] When this application is applied to a downward escalator, the effects that can be achieved are: while ensuring the normal operation of the downward escalator, reducing the consumption of electric energy and the wear during the rotation of the elevator; improving the riding experience of passengers and reducing the noise and vibration generated during the operation of the motor; reducing the maintenance and repair costs of the equipment and extending the service life of the equipment; generating electricity not only achieves energy conservation and environmental protection, but also provides a continuous upward acting force for the downward escalator, that is, generating a resistance to prevent the elevator track 10 from descending, so that the elevator descends slowly, thereby reducing the vibration and noise of the elevator and improving the riding experience of passengers; by adopting the principle of a generator rather than a motor in this application, the noise and vibration during the operation process are relatively small, and the maintenance and repair costs of the equipment are also relatively low, thus reducing the operating cost of the elevator. Generally speaking, compared with the prior art, this technical solution has the advantages of energy conservation and environmental protection, improving the passenger experience, and reducing the equipment maintenance and repair costs.

[0047] Embodiment 1, see Figure 1 , in this embodiment, the power generation rotor 30 is fixed on the elevator track 10. The power generation rotor 30 is provided with first cutting teeth 31 and cuts the magnetic field of the power generation stator 20 through the first cutting teeth 31 to generate electricity.

[0048] Embodiment 2, see Figure 2 , in this embodiment, the power generation rotor 30 includes second connecting teeth 32 and second cutting teeth 33. The elevator track 10 includes first connecting teeth 11. The power generation rotor 30 meshes with the first connecting teeth 11 of the elevator track 10 through the second connecting teeth 32, so that the power generation rotor 30 rotates driven by the elevator track 10. The power generation rotor 30 cuts the magnetic field of the power generation stator 20 through the second cutting teeth 33 to generate electricity.

[0049] It should be noted that the diagrams provided in this embodiment only illustrate the basic concept of the present utility model in a schematic manner. Therefore, only the components related to the present utility model are shown in the diagrams, rather than being drawn according to the number, shape, and size of the components during actual implementation. The type, quantity, and ratio of each component during actual implementation can be arbitrarily changed, and the component layout type may also be more complex.

[0050] The structures, proportions, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in this technology to understand and read, and are not used to limit the conditions under which the present utility model can be implemented. Therefore, they do not have substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects that the present utility model can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present utility model.

[0051] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0052] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0053] In the present utility model, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0054] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0055] In the description of this specification, the description with reference to terms such as "an embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0056] The above-described embodiments merely represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A power device capable of energy recovery, characterized in that, The power device is applied to a downward escalator and can provide an upward acting force to the downward escalator. The power device includes: An elevator track (10), and the elevator track (10) moves obliquely downward as the downward escalator operates; A power generation stator (20), and the power generation stator (20) is fixed beside the elevator track (10) and has a certain distance from the elevator track (10); A power generation rotor (30), and the power generation rotor (30) is fixed on the elevator track (10) or rotates around the power generation rotor (30) as the elevator track (10) moves, so that the power generation rotor (30) can move or rotate relative to the power generation stator (20), so that the power generation rotor (30) cuts the magnetic field of the power generation stator (20) to generate electricity.

2. The power device capable of energy recovery according to claim 1, characterized in that, The power generation rotor (30) is fixed on the elevator track (10), and the power generation rotor (30) includes: First cutting teeth (31), and a plurality of the first cutting teeth (31) are provided and protrude in the direction of the power generation stator (20).

3. The power device capable of energy recovery according to claim 2, wherein The first cutting teeth (31) are rectangular protrusions, and the first cutting teeth (31) are arranged at equal distances.

4. The power device capable of energy recovery according to claim 2, characterized in that, The first cutting teeth (31) are strip-shaped protrusion structures, one end of the first cutting teeth (31) in the length direction is fixed to the elevator track (10), and the other end of the first cutting teeth (31) in the length direction protrudes in the direction of the power generation stator (20).

5. The power device capable of energy recovery according to claim 1, characterized in that The power generation rotor (30) is rotatably surrounded by the outer periphery of the power generation stator (20), and a clamping structure or an abutting structure is formed between the outer wall of the power generation rotor (30) and the elevator track (10), so that the power generation rotor (30) rotates around the power generation stator (20) as the elevator track (10) linearly moves.

6. The power device capable of energy recovery according to claim 5, wherein, The elevator track (10) includes: First connecting teeth (11), and the first connecting teeth (11) protrude in the direction of the power generation stator (20); The power generation rotor (30) includes: Second connecting teeth (32), and the second connecting teeth (32) are arranged on the outer wall of the power generation rotor (30), and the second connecting teeth (32) are meshed with the first connecting teeth (11).

7. The power device capable of energy recovery according to claim 6, wherein The power generation rotor (30) further includes: Second cutting teeth (33), and the second cutting teeth (33) protrude towards the power generation stator (20), and the second cutting teeth (33) can cut the magnetic field of the power generation stator (20).

8. The power device capable of energy recovery according to claim 7, characterized in that, The second cutting teeth (33) are in a rectangular strip structure, and the second cutting teeth (33) are arranged along the radial direction of the power generation stator (20).

9. The power device capable of energy recovery according to claim 7, characterized in that, The second cutting teeth (33) are arranged at uniform intervals, the second connecting teeth (32) are arranged along the axial direction of the power generation stator (20), and the second cutting teeth (33) and the second connecting teeth (32) are arranged in a back-to-back manner.

10. A down escalator, characterized in that, It includes a power device capable of energy recovery as described in any one of claims 1-9.

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