Connecting device of shaft structure and elevator with connecting device
By designing the connecting device and vibration buffer of shaft structure at the connection between the emergency rescue motor and the screw of the screw, the noise problem is solved and riding comfort and user experience are improved.
Patent Information
- Application Number
- CN202421624894.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-10
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-07-10
AI Technical Summary
In normal operation and emergency situations, due to mechanical structural characteristics, noise will inevitably occur between the emergency rescue motor and the screw, affecting riding comfort and user experience.
A connecting device for an axial structure is designed, two axial structures are connected through the first member and the second member, and a vibration buffer is provided therebetween to absorb vibration generated by the axial structure and thereby reduce noise.
It effectively reduces vibration of the output shaft or screw of the emergency rescue motor, reduces noise, and improves riding comfort and user experience.
Smart Images
Figure CN222797972U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of shaft transmission, in particular to a connecting device of a shaft structure and an elevator with the connecting device. Background Art
[0002] With the rapid development of modern construction industry, elevators have gradually become an indispensable configuration in the construction field due to their convenience and comfort. In the field of home elevators, screw elevators are widely welcomed by users due to their compact structure, high space utilization and high safety (never fall down).
[0003] The screw elevator comprises a car and a screw, wherein a nut is provided on the car, the nut can rotate relative to the car, and the nut is cooperatively connected with the screw, and the vertical movement of the car in the hoistway can be achieved through the relative rotation between the screw and the nut.
[0004] During normal operation, the main drive motor drives the nut to rotate relative to the screw rod. At this time, the nut can move up or down along the screw rod at the same time, thereby realizing the lifting and lowering of the car. However, during normal operation, the vibration generated by the main drive motor will be transmitted to the screw rod, and the vibration of the screw rod will cause noise at the connection between it and the output shaft of the emergency rescue motor.
[0005] In an emergency, such as a power outage, the emergency rescue motor at the top of the screw can be started to rotate the screw relative to the nut, thereby pushing the nut and the car to the nearest safe position. At this time, the emergency rescue motor will also produce noise at the connection with the screw due to its own vibration.
[0006] In summary, due to the characteristics of its mechanical structure, screw elevators will inevitably generate noise at the connection between the emergency rescue motor and the screw during normal operation and emergency operation, which directly affects the riding comfort and user experience.
[0007] Therefore, how to overcome the above-mentioned shortcomings of the prior art is a technical problem that all walks of life are eager to solve. Utility Model Content
[0008] In order to solve the above technical problems, on the one hand, the utility model provides a connecting device of a shaft structure, which can reduce the vibration between two shaft structures and reduce the noise generated at the connection between the two shaft structures.
[0009] On the other hand, the utility model also provides an elevator with the connecting device. Compared with traditional elevators of the same type, the connecting device of the shaft structure of the first aspect is adopted to reduce the vibration of the output shaft or screw of the emergency rescue motor, thereby reducing noise and improving riding comfort and user experience.
[0010] The first aspect of the utility model provides a connecting device of a shaft-type structure, which is used for connecting two shaft-type structures, including a first component, which is used to connect to the first shaft and has a first flange portion, and the first flange portion has at least one first connecting hole; a second component, which is used to connect to the second shaft and has a second flange portion, and the second flange portion has at least one second connecting hole; at least one vibration buffer, at least a portion of which is located between the first component and the second component; at least one connecting and fastening assembly, which passes through the first connecting hole and the second connecting hole to connect the first component and the second component.
[0011] In some exemplary embodiments, the vibration buffer is passed through the first connecting hole, wherein the vibration buffer includes: an intermediate structure, which is located in the first connecting hole; two end structures, the two end structures are respectively located at two ends of the intermediate structure, and one of the end structures is located between the first member and the second member; and a through hole, which passes through the intermediate structure and the two end structures and is coaxial with the first connecting hole, and the connecting fastening assembly passes through the through hole; wherein the radial dimension of the outer periphery of the intermediate structure is smaller than the radial dimension of the two end structures.
[0012] In some exemplary embodiments, there is a clearance fit or an interference fit between the outer periphery of the intermediate structure and the first connecting hole, and the radial dimensions of the two end structures are greater than the radial dimensions of the first connecting hole.
[0013] In some exemplary embodiments, the connection and fastening assembly includes: a bolt, which passes through the through hole and the second connection hole and has a head at the end; and a nut, which is screwed onto the bolt from the other end of the bolt.
[0014] In some exemplary embodiments, there is a clearance fit or an interference fit between the bolt and the through hole, and there is a clearance fit between the bolt and the second connecting hole.
[0015] In some exemplary embodiments, a radial dimension of one of the head and the nut is larger than that of the first connecting hole, and the other is larger than that of the second connecting hole.
[0016] In some exemplary embodiments, four of each of the first connection hole, the second connection hole, the shock absorber, and the connection and fastening assembly are provided.
[0017] In some exemplary embodiments, the first member further includes a first connection portion, the first connection portion being used to connect to the first shaft; the second member further includes a second connection portion, the second connection portion being used to connect to the second shaft.
[0018] The second aspect of the utility model provides an elevator, comprising: a connecting device of the shaft-type structure described in any embodiment of the first aspect; a screw rod connected to one of the first component and the second component; an emergency rescue motor, whose output shaft is connected to the other of the first component and the second component; a car, which is threadedly connected to the screw rod; wherein the emergency rescue motor can drive the screw rod to rotate, thereby controlling the lifting and lowering of the car.
[0019] According to the connecting device of the shaft structure of the first aspect of the utility model, two shaft structures are connected by a first member and a second member, and then a vibration buffer is arranged, and at least a part of the vibration buffer is located between the first member and the second member. The vibration buffer can absorb the vibration generated by the first member or the second member, thereby reducing the vibration transmission between the two shaft structures, thereby improving the noise problem.
[0020] According to an elevator provided in the second aspect of the utility model, by adopting the shaft structure connection device of the first aspect, the vibration of the connection between the screw and the output shaft of the emergency rescue motor during the operation of the elevator can be reduced, thereby reducing the noise generated during the operation of the elevator, and further improving the riding comfort and user experience. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is an exploded schematic diagram of the connecting device of the shaft structure provided by the utility model;
[0022] Figure 2 is a schematic diagram of the structure of the connecting device after assembly;
[0023] Figure 3 It is a structural schematic diagram of the elevator provided by the utility model.
[0024] 10 Connecting device 11 First component
[0025] 12 second member 111 first flange portion
[0026] 121 second flange portion 111a first connection hole
[0027] 121a Second connection hole 112 First connection portion
[0028] 122 second connection portion 13 vibration buffer
[0029] 131a End structure 131b End structure
[0030] 132 Intermediate structure 133 Through hole
[0031] 14 Connecting and fastening components 141 Bolt
[0032] 141a Head 142 Nut
[0033] 20 Elevator 21 Screw
[0034] 22 Emergency rescue motor 23 Car
[0035] 231 Nut 24 Main drive motor. DETAILED DESCRIPTION
[0036] Reference will be made in detail to various embodiments of the present invention, examples of which are presented in the accompanying drawings and described below. Although the present invention will be described in conjunction with exemplary embodiments, it should be understood that this specification is not intended to limit the present invention to these exemplary embodiments. On the contrary, the present invention is intended to cover not only these exemplary embodiments, but also various alternative forms, modified forms, equivalent forms and other embodiments that may be included in the spirit of the present invention and within the scope defined by the appended claims.
[0037] Figure 1 It is an exploded schematic diagram of a connecting device of a shaft structure provided by the utility model.
[0038] Figure 2 It is a schematic diagram of the structure after the connection device is assembled.
[0039] See also Figure 1 The connecting device 10 includes a first member 11 for connecting a first shaft, and a second member 12 for connecting a second shaft. The first member 11 has a first flange portion 111, and the second member 12 has a second flange portion 121. The first member 11 and the second member 12 are connected to each other through the first flange portion 111 and the second flange portion 121, thereby realizing the connection between two shaft-like structures (i.e., the first shaft and the second shaft).
[0040] The first flange portion 111 has a first connection hole 111 a , and the second flange portion 121 has a second connection hole 121 a . The connection fastening assembly 14 passes through the first connection hole 111 a and the second connection hole 121 a , thereby connecting the first component 11 and the second component 12 to each other.
[0041] The connecting device 10 further includes a vibration buffer 13. The vibration buffer 13 is made of an elastic material such as rubber or polyurethane, and at least a portion of the vibration buffer 13 is located between the first component 11 and the second component 12, and can reduce the vibration generated by the first component 11 or the second component 12. In this way, the noise caused by the torque transmitted from one shaft structure (one of the first shaft and the second shaft) to the other shaft structure (the other of the first shaft and the second shaft) is reduced.
[0042] See also Figure 1 and Figure 2 The vibration buffer 13 includes an intermediate structure 132 and two end structures 131a and 131b, and the two end structures 131a and 131b are respectively located at the two ends of the intermediate structure 132, and the radial dimension of the intermediate structure 132 is smaller than the radial dimensions of the two end structures 131a and 131b. The vibration buffer 13 is inserted into the first connecting hole 111a, wherein the intermediate structure 132 is located in the first connecting hole 111a, and the two end structures are respectively located at the two end sides of the first connecting hole 111a, and can stop against the two end surfaces of the first flange portion 111 to prevent the vibration buffer 13 from falling out of the first connecting hole 111a.
[0043] Continue reading Figure 1 and Figure 2 Specifically, there is a clearance fit or an interference fit between the outer periphery of the intermediate structure 132 and the first connecting hole 111a, thereby enabling the intermediate structure 132 to be disposed in the first connecting hole 111a without generating a large gap with the first connecting hole 111a to cause obvious radial shaking; the radial dimensions of the two end structures 131a and 131b are larger than the first connecting hole 111a, so that the two end structures 131a and 131b can respectively stop at the two end surfaces of the first flange portion 111.
[0044] When installing the vibration buffer 13, one of the end structures 131a is inserted into the first connection hole 111a from one side of the first connection hole 111a. At this time, the one end structure 131a is deformed; the vibration buffer 13 is pushed to the other side of the first connection hole 111a until the one end structure 131a is out of the first connection hole 111a, and the middle structure 132 is located in the first connection hole 111a. At this time, the one end structure 131a restores its shape, and the middle structure 132 is located in the first connection hole 111a. After the installation is completed, the end structure 131b is located between the first component 11 and the second component 12 (when the connecting device 10 is in use) to avoid direct contact between the first component 11 and the second component 12.
[0045] The vibration buffer 13 also has a through hole 133. After the vibration buffer is installed to the first connecting hole 111a, the through hole 133 is coaxial with the first connecting hole 111a. At this time, the connecting fastener assembly 14 passes through the through hole 133 (first connecting hole 111a) and the second connecting hole 121a to connect the first component 11 and the second component 12.
[0046] The connection and fastening assembly 14 includes a bolt 141 and a nut 142. A head 141a is provided at one end of the bolt 141, and the nut 142 can be screwed onto the bolt 141 from the other end of the bolt 141. During installation, the other end of the bolt 141 is first passed through the through hole 133 (the first connection hole 111a) and the second connection hole 121a in sequence, and then the nut 142 is screwed onto the bolt 141 from the one end. At this time, the head 141a of the bolt 141 is pressed against one end structure 131a of the vibration buffer 13, and the nut 142 is pressed against the second flange portion 121 of the second member 12, thereby fastening the first member 11 and the second member 12. Of course, the other end of the bolt 141 can also be first passed through the second connecting hole 121a, and then through the through hole 133 (first connecting hole 111a). At this time, the head 141a of the bolt 141 is tightly pressed against the second flange portion 121 of the second component 12, and the nut 142 is tightly pressed against an end structure 131a of the vibration buffer 13.
[0047] The bolt 141 and the through hole 133 are clearance fit or interference fit, so that there is no obvious gap between the bolt 141 and the through hole 133, thereby preventing the bolt 141 from making obvious radial movement in the through hole 133. The bolt 141 and the second connecting hole 121a are clearance fit, also to prevent the bolt 141 from making obvious radial movement in the second connecting hole 121a.
[0048] The radial dimension of one of the head 141a of the bolt 141 and the nut 142 is larger than the first connection hole 111a, and the other is larger than the second connection hole 121a. For example, if the head 141a of the bolt 141 is pressed against one end of the vibration buffer 13, the radial dimension of the head 141a of the bolt 141 is larger than the first connection hole 111a, and the radial dimension of the nut 142 is larger than the second connection hole 121a. It can be understood that, according to the foregoing, the radial dimension of the first connection hole 111a must be larger than the radial dimension of the second connection hole 121a, and therefore, at this time, the radial dimension of the head 141a of the bolt 141 must also be larger than the radial dimension of the second connection hole 121a.
[0049] The first connection hole 111a, the second connection hole 121a, the vibration buffer 13, and the connection and fastening assembly 14 are arranged as at least one group, that is, at least one first connection hole 111a, at least one second connection hole 121a, at least one vibration buffer 13, and at least one connection and fastening assembly 14. It can also be arranged as multiple groups, for example, 4 groups.
[0050] The first component 11 further includes a first connection portion 112 for connecting to the first shaft, and the second component 12 further includes a second connection portion 122 for connecting to the second shaft.
[0051] In a second aspect of the present invention, there is provided an elevator 20, referring to Figure 3 The elevator 20 includes the connecting device 10 of the shaft-like structure described above.
[0052] Specifically, refer to Figure 1 , Figure 2 , Figure 3 The elevator 20 further includes a screw 21, an emergency rescue motor 22, a car 23, and a main drive motor 24. The car 23 is provided with a nut 231 that cooperates with the screw 21, and the nut 231 can rotate relative to the car 23. Among them, the main drive motor 24 is used to drive the nut 231 to rotate, and the emergency rescue motor 22 is provided at the top of the screw 21, and is used to drive the screw 21 to rotate.
[0053] The connecting device 10 is used to connect the output shaft and the screw of the emergency rescue motor 22. Specifically, the top of the screw 21 is connected to one of the first component 11 and the second component 12, and the output shaft of the emergency rescue motor 22 is connected to the other of the first component 11 and the second component 12. The emergency rescue motor 22 drives the screw 21 to rotate, thereby controlling the lifting of the car 23.
[0054] According to the elevator provided by the utility model, the connecting device 10 is used to connect the emergency rescue motor 22 and the screw 21, and the vibration of the emergency rescue motor 22 or the screw 21 is reduced by the vibration buffer 13, thereby reducing the noise generated at the connection between the emergency rescue motor 22 and the screw 21.
[0055] It should be noted that other structures of the elevator 20 that are not described in detail in the foregoing text, the specific installation structure and environment of the elevator 20, can all be applicable to solutions in traditional technologies, and the present utility model will not repeat them any more.
[0056] The description presented above of the specific exemplary embodiments of the utility model is for the purpose of illustration and description. The foregoing description is not intended to be exhaustive, nor is it intended to limit the utility model 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 utility model and its practical application, so that other technicians in the field can realize and utilize the various exemplary embodiments of the utility model and its different selected forms and modified forms. The scope of the utility model is defined by the attached claims and their equivalents.
Claims
1. A connecting device for a shaft structure, used for connecting two shaft structures, characterized in that: include: A first component, which is used to be connected to the first shaft and has a first flange portion, wherein the first flange portion has at least one first connecting hole; A second member, which is used to be connected to the second shaft and has a second flange portion, wherein the second flange portion has at least one second connecting hole; at least one vibration damper, at least a portion of the vibration damper being located between the first member and the second member; At least one connecting and fastening component passes through the first connecting hole and the second connecting hole to connect the first component and the second component.
2. The connecting device of the shaft structure according to claim 1, characterized in that: The vibration buffer is disposed through the first connecting hole, wherein the vibration buffer comprises: an intermediate structure, which is located in the first connecting hole; two end structures, the two end structures are respectively located at two ends of the intermediate structure, and one of the end structures is located between the first member and the second member; and a through hole, which passes through the middle structure and the two end structures and is coaxial with the first connecting hole, and the connecting and fastening assembly passes through the through hole; Wherein, the radial dimension of the intermediate structure is smaller than the radial dimension of the outer circumference of the two end structures.
3. The connecting device of the shaft structure according to claim 2, characterized in that: There is a clearance fit or an interference fit between the outer periphery of the intermediate structure and the first connecting hole, and the radial dimensions of the two end structures are greater than the radial dimensions of the first connecting hole.
4. The connecting device of the shaft structure according to claim 2, characterized in that: The connecting and fastening assembly comprises: a bolt, which passes through the through hole and the second connecting hole and has a head at the end thereof; A nut is screwed onto the bolt from the other end of the bolt.
5. The connecting device of the shaft structure according to claim 4, characterized in that: There is a clearance fit or interference fit between the bolt and the through hole, and there is a clearance fit between the bolt and the second connecting hole.
6. The connecting device of the shaft structure according to claim 5, characterized in that: One of the head and the nut has a radial dimension larger than the first connecting hole, and the other one of the head and the nut has a radial dimension larger than the second connecting hole.
7. The connecting device of the shaft structure according to any one of claims 1 to 6, characterized in that: The first connection hole, the second connection hole, the vibration buffer, and the connection and fastening assembly are respectively provided in four.
8. The connecting device of the shaft structure according to any one of claims 1 to 6, characterized in that: The first member further includes a first connecting portion, the first connecting portion being used to connect to the first shaft; The second member further includes a second connecting portion configured to be connected to a second shaft.
9. An elevator, characterized in that: include: The connecting device of the shaft structure according to any one of claims 1 to 8; a screw connected to one of the first member and the second member; An emergency rescue motor, whose output shaft is connected to the other of the first component and the second component; a car threadably connected to the screw; Among them, the emergency rescue motor can drive the screw to rotate, thereby controlling the lifting and lowering of the car.