Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B66—HOISTING; LIFTING; HAULING
  • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
  • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
  • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
  • B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
  • B66B5/044—Mechanical overspeed governors
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B66—HOISTING; LIFTING; HAULING
  • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
  • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
  • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
  • B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
  • B66B5/06—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed electrical
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B66—HOISTING; LIFTING; HAULING
  • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
  • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
  • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
  • B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
  • B66B5/18—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces

Definitions

• the present invention relates to a safety device for emergency stop of an elevator.
• Conventional emergency stop devices for elevators are relatively connected to the connecting means to which one end of the governor rope of the governor is fixed due to a force such as a force wheel or an inertial force of the car at the time of startup. If an upward force is applied and the operation exceeds a predetermined amount, the emergency stop device may operate.
• Patent Document 1 Japanese Patent Application Publication No. JP-A-5-319724
• the pulling lever that rotates upward by the tension force of the governor rope and moves the brake element upward is applied to the cam and the cam at the axial end of the pulling lever.
• the brake It describes the technology that enables the uplift.
• Patent Document 1 Japanese Patent Application Publication Number JP-A-5-319724
• the present invention is intended to solve the above-described problems.
• An emergency stop device for an elevator that can reduce the delay with respect to an emergency stop operation while preventing malfunction of the emergency stop device.
• the purpose is to provide. Means for solving the problem
• the present invention includes a guide rail, a governor, a governor rope, a connecting means having one end fixed to the governor rope, and a position of the other end of the connecting means.
• An emergency stop means that operates in accordance with the guide rail to obtain a braking force of the force, and a malfunction prevention means that prevents a malfunction by giving a predetermined urging force to the operation of the emergency stop means;
• a malfunction prevention release means for releasing the predetermined urging force provided by the malfunction prevention means when a predetermined speed is exceeded based on the speed of the force.
• the emergency stop device for a powerful elevator, for each force, a guide rail, a speed governor, a speed governor rope, connection means having one end fixed to the speed governor rope, and the connection
• An emergency stop means that operates based on the position of the other end of the means and obtains a braking force of the force by pressing against the guide rail, and applies a predetermined urging force to the operation of the emergency stop means
• Malfunction prevention means for preventing malfunction, and malfunction prevention release means for releasing the predetermined urging force provided by the malfunction prevention means when a predetermined speed is exceeded based on the speed of the force. Therefore, the operation delay of the emergency stop means due to the urging force of the malfunction prevention means can be improved.
• FIG. 1 is a diagram showing an emergency stop device for an elevator according to Embodiment 1 of the present invention.
• FIG. 2 is a structural diagram of emergency stop means 7 constituting the emergency stop device for an elevator according to Embodiment 1 of the present invention.
• FIG. 3 is a cross-sectional view of the emergency stop means 7 constituting the emergency stop device for an elevator according to the first embodiment of the present invention, taken along the line B-B.
• FIG. 4 is an operation diagram of the connecting lever 14 and the malfunction prevention means 19 constituting the emergency stop device for an elevator according to the first embodiment of the present invention, and a sectional view of the electromagnetic switch 10 at that time.
• FIG. 5 is a diagram showing the operation of emergency stop means 7 that constitutes the emergency stop device for an elevator according to the first embodiment of the present invention.
• FIG. 7 is an operation diagram with the operation preventing means 19 and a cross-sectional view of the electromagnetic switch 24.
• Example 1 The best mode for carrying out the invention will be described in Example 1 and Example 2.
• FIG. 1 is a diagram illustrating an elevator safety device according to Embodiment 1 of the present invention.
• the car 2 moves up and down in the hoistway along the guide rail 1.
• the endless governor rope 3 is wound around the governor 4 and the governor rope tensioner 5.
• the governor rope 3 is fixed to one end of the pull-up bar 6 which is a connecting means, and the other end of the pull-up bar 6 is fixed to a component of the emergency stop means 7 so as to be rotatable. The components will be described later.
• the governor 4 uses a centrifugal force such as a disk shape or a ball shape to change the speed to a constant rotational speed regardless of fluctuations in the load of the rotating equipment.
• This is a device that adjusts the rotating body so that it rotates in synchronism with the force hoisting motor. For example, if the overspeed of the force is less than 1.3 times the rated speed and the first speed is reached, the hoisting motor is turned off and the electromagnetic brake is activated. When the speed reaches the second speed less than 4 times the rated speed without dropping the overspeed, the speed governor 4 grasps the speed governor rope 3 and the pulling rod 6 is pulled up to operate the emergency stop means 7.
• the governor 4 when the overspeed of the force 2 reaches the first speed, the governor 4 is provided with a switch 8 that is mechanically switched by the centrifugal force generated by the sheave.
• control means 9 electrically connected to switch 8 switches off the on / off signal from switch 8. It is configured to operate the electromagnetic switch 10 in response to a signal.
• the switch 8 is conventionally provided, and a mechanical overspeed switch for turning off the hoisting motor when the speed reaches the first speed may be used.
• the switch 8, the control means 9, and the electromagnetic switch 10 are components of the malfunction prevention release means, respectively.
• FIG. 2 is a structural diagram of the emergency stop means 7 constituting the safety device for an elevator according to the first embodiment of the present invention.
• the other end of the pull-up bar 6 is rotatably fixed to one end of an emergency stop lever 11 which is a component of the emergency stop device 7.
• the emergency stop lever 11 is fixed to the emergency stop means main body 12 so as to be rotatable with respect to the hole 12a.
• the emergency stop lever 11 of the emergency stop means 7 is defined such that one end of the brake 13 and one end of the connecting lever 14 are rotatable.
• the emergency stop lever 11 is configured not to rotate to the left from the current position by the stopper 28, so that the pull-up bar 6 does not move downward from the current position.
• FIG. 3 is a cross-sectional view of the emergency stop means 7 constituting the elevator safety device according to the first embodiment of the present invention, taken along the line BB in FIG.
• the two brake elements 13 connected to the emergency stop lever 11 move upward.
• the brake element 13 is moved inward by a roller 16 rotatably fixed to the guide 15 and slides on the guide rail 1 to obtain a braking force.
• the guide 15 is fixed to the emergency stop means body 12 via the panel 17, and the braking force due to the sliding of the guide rail 1 and the brake 13 is determined by the force applied to the guide 15 of the panel 17.
• the other end of the connecting lever 14 is connected to a malfunction preventing means 19 via a pin 18.
• a panel 20 is disposed in the malfunction prevention means 19 fixed to the force 2 and is configured such that the other end of the connecting lever 14 is pulled by the biasing force of the panel 20.
• the pin 18 constitutes a part of the electromagnetic switch 10 that is a malfunction prevention release means, and the pin 18 reciprocates by the operation of the electromagnetic switch 10.
• the connecting lever 14 and the malfunction prevention means 19 can be connected and released, and the emergency stop action can be performed without delay because the connection lever 14 and the malfunction prevention means 19 are not affected by the urging force of the malfunction prevention means 19. This will be described in detail below.
• FIG. 4 is an operation diagram of the connecting lever 14 and the malfunction preventing means 18 constituting the safety device for an elevator according to the first embodiment of the present invention, and a sectional view of the electromagnetic switch 10 at that time.
• Fig. 4 (a) shows normal operation
• Fig. 4 (b) shows when governor 4 is at the first speed
• Fig. 4 (c) shows when governor 4 is at the second speed. Show.
• the lower diagram is an operation diagram of the connecting lever 14 and the malfunction prevention means 19, and the upper diagram is a sectional view of the electromagnetic switch 10 at that time.
• the pin 18 is connected to the electromagnetic switch body 21 via the panel 20, and a force is always applied to the electromagnetic switch body 21 by the panel 20.
• the pin 18 is fixed in contact with the electromagnet 22. Therefore, since the pin 18 is normally on the electromagnet 22 side, it is connected by fitting the pin into the hole provided in the connecting lever 14 and the malfunction preventing means 19.
• FIG. 5 is a diagram illustrating the operation of the emergency stop means 7 constituting the emergency stop device for the elevator according to the first embodiment of the present invention.
• Example 1 the car 2, the guide rail 1, the speed governor 4, the speed governor rope 3, and the pulling rod 6 having one end fixed to the speed governor rope 3 are provided. And the emergency stop means 7 that operates based on the position of the other end of the lifting rod 6 and slides on the guide rail 1 to obtain the braking force of the car 2, and a predetermined load for operating the emergency stop means 7.
• the operation delay of the emergency stop means 7 due to the urging force of the malfunction prevention means 19 can be improved.
• the pull-up bar 6 is constituted by a string that does not necessarily need to be a bar as long as it is a means for connecting the governor rope 4 and the emergency stop lever 11. Also, there is no problem in constructing Example 1.
• the control means 9 electrically connected to the switch 8 receives the turn-off signal from the switch 8, and the electromagnetic stone 21 in the electromagnetic switch 10 which is a component of the emergency stop device 7 is obtained.
• the control means 9 electrically connected to the switch 8 receives the input signal of the switch 8 and receives an emergency stop device.
• a configuration may be adopted in which current is applied to the electromagnet 22 in the electromagnetic switch 10 which is the component 7.
• the panel 20 is always configured to generate a force in the direction in which the electromagnetic switch main body 12 and the pin 18 are brought into contact with each other. For example, it is necessary to configure the position of the electromagnet 22 above the pin 18 so that the pin 12 and the pin 18 do not contact each other.
• the second speed is larger than the first speed
• the first speed is larger than the rated speed. It is not necessarily 1.3 times or 1.4 times the speed.
• FIG. 6 is an operation diagram of the connecting lever 23 and the malfunction prevention means 19 and a cross-sectional view of the electromagnetic switch 24 constituting the emergency stop device for an elevator according to the second embodiment of the present invention. 1.
• the same reference numerals as those in FIG. 4 denote the same or corresponding parts.
• one end of the connecting lever 23 fixed to the emergency stop lever 11 is fixed to be rotatable.
• the other end of the connecting lever 23 is formed with an L-shaped hole 23a, and the hole 23a is engaged with a rod-like stopper 25 fixed to the malfunction prevention unit 19.
• the connecting lever 23 is fitted by a mover 26 having two pins 26a fixed thereto.
• the mover 26 constitutes one part of the electromagnetic switch 24, and the other components of the electromagnetic switch 24, which is the malfunction prevention release means, are the electromagnetic switch body 27, and between the electromagnetic switch body 27 and the mover 26.
• the panel 20 is configured to generate a pressing force
• the electromagnet 22 is fixed to the electromagnetic switch body 27 and generates an attractive force between the movable element 26.
• the controlled control unit 9 receives the switch 8 turn-off signal, cuts off the current of the electromagnet 22 in the electromagnetic switch 24 which is a component of the emergency stop device 7, and the movable element 26 is moved upward by the tensile force of the panel 20.
• the connecting lever 23 fitted to the mover 26 also moves upward. Then, the position of the stopper 25 with respect to the hole 23a on the L-shape of the connecting lever 23 moves downward, so that the connecting lever 23 can move left and right without depending on the urging force of the malfunction prevention unit 19. It becomes.
• the elevator emergency stop device according to the present invention is suitable for an elevator safety device.

Priority Applications (4)

Applications Claiming Priority (1)

Publications (1)

Family

ID=36227536

Family Applications (1)

Country Status (4)

Cited By (3)

Families Citing this family (6)

Citations (6)

Family Cites Families (3)

• 2004
  • 2004-10-27 WO PCT/JP2004/015895 patent/WO2006046284A1/ja active Application Filing
  • 2004-10-27 CN CNB2004800408782A patent/CN100528727C/zh not_active Expired - Fee Related
  • 2004-10-27 JP JP2006542161A patent/JPWO2006046284A1/ja active Pending
  • 2004-10-27 EP EP04793007A patent/EP1806310B1/en not_active Expired - Fee Related

Patent Citations (6)

Non-Patent Citations (1)

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