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CN-122009936-A - Diverting pulley device, car, counterweight device and elevator

CN122009936ACN 122009936 ACN122009936 ACN 122009936ACN-122009936-A

Abstract

The application relates to a diverting pulley device which comprises a diverting pulley body, a bearing, a diverting pulley shaft, a mounting piece, a first limiting piece and a second limiting piece, wherein the diverting pulley shaft is connected with the diverting pulley body through the bearing, the mounting piece is provided with a first mounting hole, the diverting pulley shaft is inserted into the first mounting hole, the first limiting piece is arranged on the mounting piece, a part of the first limiting piece is embedded into the diverting pulley shaft to limit the axial displacement of the diverting pulley shaft relative to the mounting piece, and the second limiting piece is arranged on the mounting piece and is abutted with the diverting pulley shaft to limit the rotation of the diverting pulley shaft relative to the mounting piece. According to the diverting pulley device provided by the application, an axial and circumferential double safety secondary protection design is adopted, when a bearing fails and is blocked or other abnormal conditions occur, the diverting pulley shaft rotates under the drive of the diverting pulley body, so that the axial displacement of the diverting pulley shaft relative to the mounting part can be continuously limited by the first limiting part when the limiting failure of the second limiting part is caused, the diverting pulley shaft is prevented from falling off from the mounting part, and the falling risk of a lift car or a counterweight device is reduced.

Inventors

  • GAO XIN
  • LU XIAOMIN
  • XIAO YONGHENG
  • HUANG HONGYUN
  • MIAO LIMEI

Assignees

  • 日立电梯（中国）有限公司

Dates

Publication Date
20260512
Application Date
20241111

Claims (10)

  1. 1. A diverting pulley device, includes diverting pulley body and bearing, its characterized in that, diverting pulley device still includes: the rope reversing wheel shaft is connected with the rope reversing wheel body through the bearing; the mounting piece is provided with a first mounting hole, and the inverted rope wheel shaft is inserted into the first mounting hole; The first limiting piece is arranged on the mounting piece, a part of the first limiting piece is embedded in the diverting pulley shaft to limit the axial displacement of the diverting pulley shaft relative to the mounting piece for axial limiting protection, and the first limiting piece is embedded in the diverting pulley shaft to limit the axial displacement of the diverting pulley shaft relative to the mounting piece for axial limiting protection, The second limiting piece is arranged on the mounting piece and is abutted with the diverting pulley shaft to limit the diverting pulley shaft to rotate relative to the circumferential direction of the mounting piece.
  2. 2. The diverting pulley device according to claim 1, wherein the diverting pulley shaft comprises a shaft main body part, a mounting part and a connecting part, the shaft main body part is located at one side of the mounting part facing the diverting pulley body, the mounting part is located at one side of the mounting part facing away from the diverting pulley body and is connected with the shaft main body part through the connecting part, an annular groove is formed in the outer circumferential surface of the mounting part, and a part of the first limiting part is embedded in the annular groove.
  3. 3. The diverting pulley device according to claim 2, characterized in that the diverting pulley device comprises a plurality of first limiting members, and the plurality of first limiting members are sequentially arranged at intervals along the circumferential direction of the mounting portion and are all engaged with the annular groove.
  4. 4. The diverting pulley arrangement according to claim 1, characterized in that the outer circumferential surface of the diverting pulley shaft is provided with a second limit plane, the second limit piece is provided with a fourth limit plane, which faces the diverting pulley shaft and abuts against the second limit plane.
  5. 5. The diverting pulley arrangement according to claim 4, characterized in that the length in the extension direction of the fourth limit plane is greater than or equal to the length in the extension direction of the second limit plane.
  6. 6. The diverting pulley arrangement according to claim 4, characterized in that the second limit piece is arranged at a side of the first limit piece facing away from the mounting piece.
  7. 7. The diverting pulley apparatus according to claim 1, wherein the diverting pulley shaft comprises a shaft main body portion and a connecting portion, the shaft main body portion is located at a side of the mounting member facing the diverting pulley body, the connecting portion is located in the first mounting hole and is connected with the shaft main body portion, a first limit plane is provided on an outer peripheral surface of the connecting portion, the mounting member has a third limit plane provided corresponding to the first mounting hole, and the third limit plane abuts against the first limit plane.
  8. 8. A car comprising a car body and a diverting pulley arrangement according to any of claims 1-7, the mounting being connected to the car body.
  9. 9. A counterweight comprising a counterweight body and a diverting pulley arrangement as in any of claims 1-7, the mounting being connected to the counterweight body.
  10. 10. An elevator, characterized in that the elevator comprises a car, a counterweight and a traction device, the car and the counterweight are in transmission connection through the traction device, the car is the car according to claim 8 and/or the counterweight is the counterweight according to claim 9.

Description

Diverting pulley device, car, counterweight device and elevator Technical Field The application relates to the technical field of elevator equipment, in particular to a diverting pulley device, a lift car, a counterweight device and an elevator. Background In addition, the diverting pulley device not only can reduce the abrasion of the steel wire rope in the running process, but also can improve the running efficiency of the elevator and ensure the safe and efficient running of the elevator. The rope wheel shaft in the rope diverting pulley device is connected with the elevator car or the counterweight device to form a suspension for the elevator car or the counterweight device. However, when an abnormal situation occurs in the running process of the elevator, the diverting pulley shaft can be separated from the elevator car or the counterweight device, so that the elevator car or the counterweight device falls down due to the loss of hanging, which not only can endanger the personal safety of passengers, but also can cause the damage of elevator equipment. Disclosure of Invention Accordingly, it is necessary to provide a diverting pulley device, a car, a counterweight device, and an elevator, in order to solve the problem that the diverting pulley shaft is separated from the car or the counterweight device of the elevator and the car or the counterweight device falls. A diverting pulley arrangement comprising a diverting pulley body and a bearing, the diverting pulley arrangement further comprising: the rope reversing wheel shaft is connected with the rope reversing wheel body through the bearing; the mounting piece is provided with a first mounting hole, and the inverted rope wheel shaft is inserted into the first mounting hole; The first limiting piece is arranged on the mounting piece, a part of the first limiting piece is embedded in the diverting pulley shaft to limit the axial displacement of the diverting pulley shaft relative to the mounting piece for axial limiting protection, and the first limiting piece is embedded in the diverting pulley shaft to limit the axial displacement of the diverting pulley shaft relative to the mounting piece for axial limiting protection, The second limiting piece is arranged on the mounting piece and is abutted with the diverting pulley shaft to limit the diverting pulley shaft to rotate relative to the circumferential direction of the mounting piece. In one embodiment, the diverting pulley shaft comprises a shaft main body part, a mounting part and a connecting part, wherein the shaft main body part is positioned at one side of the mounting part facing the diverting pulley body, the mounting part is positioned at one side of the mounting part facing away from the diverting pulley body and is connected with the shaft main body part through the connecting part, an annular groove is formed in the outer peripheral surface of the mounting part, and part of the first limiting part is embedded in the annular groove. In one embodiment, the diverting pulley device comprises a plurality of first limiting members, and the first limiting members are sequentially arranged at intervals along the circumferential direction of the mounting part and are all in clamping connection with the annular groove. In one embodiment, a second limiting plane is arranged on the outer circumferential surface of the anti-rope wheel shaft, a fourth limiting plane is arranged on the second limiting piece, and the fourth limiting plane faces the anti-rope wheel shaft and is in butt joint with the second limiting plane. In one embodiment, the length of the fourth limiting plane in the extending direction is greater than or equal to the length of the second limiting plane in the extending direction. In one embodiment, the second limiting member is disposed on a side of the first limiting member facing away from the mounting member. In one embodiment, the diverting pulley shaft comprises a shaft main body part and a connecting part, wherein the shaft main body part is positioned at one side of the mounting part facing the diverting pulley body, the connecting part is positioned in the first mounting hole and is connected with the shaft main body part, a first limiting plane is arranged on the outer peripheral surface of the connecting part, the mounting part is provided with a third limiting plane corresponding to the first mounting hole, and the third limiting plane is in butt joint with the first limiting plane. A car comprising a car body and a diverting pulley arrangement as described above, the mount being connected to the car body. The counterweight device comprises a counterweight main body and the diverting pulley device, wherein the mounting piece is connected with the counterweight main body. The elevator comprises a car, a counterweight and a traction device, wherein the car is in transmission connection with the counterweight through the traction device, and/or the car is/are the counterweigh