JP2016210563A - Door opening travel preventing device for elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a door opening travel preventing device for an elevator, which can reduce shocks to be transmitted to a cage.SOLUTION: A door opening travel preventing device for an elevator, comprises: a guide bar 22 attached to a cage 1 and extending in a height direction; an emergency stop lever 23 moving between an engaging position, at which it overlaps an emergency stopping stopper 4 disposed in a hoistway in a manner to correspond to a car stop, and a release position, which is shifted in the case where it is shifted from the emergency stopping stopper 4 in the case where it is seen in a height direction, and movable in a height direction with respect to the guide rod 22; and an elastic member 24 mounted on the guide rod 22 for biasing the emergency stopping lever 23 in the direction opposed to the moving direction of the emergency stopping lever 23, in the case where the emergency stopping lever 23 moves in the height direction relative to the guide rod 22 thereby to regulate the movement of the emergency stopper lever 23.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an elevator door-opening travel prevention device for preventing a car from traveling while an elevator door is in a door-open position.

  Conventionally, an emergency stop stopper provided on the hoistway corresponding to the landing, and an engagement position provided on the car and overlapping with the emergency stop stopper when viewed from the height direction, the emergency stop stopper, and the height direction If the emergency stop lever is displaced between the release position and the car door is in the door open position, the emergency stop lever is in the release position and the car door is in the door open position. And a displacement device for setting the position of the emergency stop lever to the engagement position.When the car door is in the door open position, the position of the emergency stop lever is the engagement position, and the position of the emergency stop lever is 2. Description of the Related Art An elevator door-opening travel prevention device that prevents a car from traveling by hitting an emergency stop stopper in the height direction is known (see, for example, Patent Document 1).

JP 2009-12963 A

  However, for example, when the elevator door moves from the door-closed position to the door-open position while the car is running, there is a problem that the impact transmitted to the car is large because the engagement device strongly collides with the stopper. .

  The present invention provides an elevator door-opening travel prevention device that can reduce an impact transmitted to a car.

  The elevator door-opening travel prevention device according to the present invention is provided in a car, when viewed from the height direction with a guide bar extending in the height direction, an emergency stop stopper provided in the hoistway corresponding to the landing Is provided on the guide bar and the emergency stop lever that is displaced between the engagement position that overlaps the stopper and the release position that shifts when viewed from the height direction, and the emergency stop lever guides the height direction. And an elastic member that urges the emergency stop lever in a direction opposite to the direction of movement of the emergency stop lever to restrict the movement of the emergency stop lever when moving with respect to the rod.

  According to the elevator door-opening travel prevention device according to the present invention, when the emergency stop lever collides with the emergency stop stopper, the emergency stop lever has a height with respect to the guide rod until it is regulated by the elastic member. Since it moves in the direction, the collision between the emergency stop lever and the emergency stop stopper can be weakened. Thereby, the impact transmitted to the car can be reduced.

It is a perspective view which shows the principal part of the elevator which concerns on Embodiment 1 of this invention. It is a front view which shows the fixing member, guide rod, emergency stop lever, and elastic member of FIG. It is arrow sectional drawing along the III-III line of FIG. It is a top view which shows the principal part of the elevator of FIG. It is a top view which shows the car door of FIG. 1, a triangular plate, and a rotation lever. It is a top view which shows the state which the car door of FIG. 5 displaced. It is a block diagram which shows the elevator of FIG.

Embodiment 1 FIG.
1 is a perspective view showing a main part of an elevator according to Embodiment 1 of the present invention. In the figure, the elevator includes a car 1 and a door-open travel prevention device (an elevator door-open travel prevention device) 2 provided in the car 1. The car 1 includes a car floor 11, a car side wall 12 standing on the car floor 11, a car ceiling 13 provided at an upper part of the car side wall 12, and a car door 14 that opens and closes a car doorway formed in the car side wall 12. And have.

  The door-opening travel prevention device 2 is provided on the car 1 via the fixing member 21 fixed to the outer surface of the car side wall 12 and is formed extending in the height direction and rotatable in the circumferential direction. A guide rod 22, an emergency stop lever 23 provided on the guide rod 22 and movable in the height direction with respect to the guide rod 22, and an elastic member 24 provided on the guide rod 22 and supporting the emergency stop lever 23. A triangular plate 25 provided on the car door 14, a rotation lever 26 provided so as to be able to contact the triangular plate 25 and rotating in conjunction with the movement between the door closing position and the door opening position of the car door 14, A power transmission device 27 that rotates the guide rod 22 in conjunction with the rotation of the rotation lever 26 is provided.

  FIG. 2 is a front view showing the fixing member 21, the guide rod 22, the emergency stop lever 23, and the elastic member 24 of FIG. The fixing member 21 has a pair of protruding plates 211 and 212 protruding in the horizontal direction from the car side wall 12. The pair of protruding plates 211 and 212 are disposed away from each other in the height direction. The pair of protruding plates 211 and 212 are disposed so as to overlap each other when viewed from the height direction. In this example, of the pair of protruding plates 211 and 212, the lower one is the protruding plate 211, and the upper one is the protruding plate 212.

  The guide rod 22 has an upper end attached to the protruding plate 212 and a lower end attached to the protruding plate 211. The upper end portion of the guide rod 22 is disposed so as to penetrate the protruding plate 212.

  The emergency stop lever 23 is disposed between the protruding plate 211 and the protruding plate 212.

  The elastic member 24 includes a spring 241 provided between the protruding plate 211 and the emergency stop lever 23, and a spring 242 provided between the protruding plate 212 and the emergency stop lever 23. The elastic member 24 urges the emergency stop lever 23 in the direction opposite to the moving direction of the emergency stop lever 23 when the emergency stop lever 23 moves relative to the guide rod 22 in the height direction. The movement of the stop lever 23 is restricted. Specifically, when the emergency stop lever 23 receives a force in the direction of moving downward from the intermediate position, the spring 241 biases the emergency stop lever 23 upward, and the spring 242 moves the emergency stop lever 23 upward. Energize to. On the other hand, when the emergency stop lever 23 receives a force in the upward movement direction from the intermediate position, the spring 241 biases the emergency stop lever 23 downward, and the spring 242 biases the emergency stop lever 23 downward. To do. When the force applied to the emergency stop lever 23 and the biasing force of the elastic member 24 balance, the movement of the emergency stop lever 23 in the height direction stops. The intermediate position of the emergency stop lever 23 is a position where the emergency stop lever 23 is arranged in a state where no force is applied to the emergency stop lever 23.

  3 is a cross-sectional view taken along line III-III in FIG. The guide rod 22 has a rod main body 221 formed in a cylindrical shape and a plurality of projecting portions 222 projecting radially outward from the rod main body 221. The plurality of protrusions 222 are arranged at equal intervals in the circumferential direction of the rod body 221. The protrusion 222 is formed to extend in the longitudinal direction of the rod body 221.

  The emergency stop lever 23 is formed with a through hole 231 into which the rod body 221 is inserted. A plurality of grooves 232 into which the protrusions 222 are inserted are formed on the inner wall surface of the through hole 231. The groove 232 is formed to extend in the thickness direction of the emergency stop lever 23, that is, in the height direction. The grooves 232 are arranged at equal intervals in the circumferential direction of the through hole 231. The groove 232 is disposed corresponding to the protrusion 222. Therefore, the number of protrusions 222 and the number of grooves 232 are the same.

  Since the protrusion 222 is inserted into the groove 232, the emergency stop lever 23 rotates around the guide rod 22 when the guide rod 22 rotates in the circumferential direction.

  FIG. 4 is a plan view showing a main part of the elevator shown in FIG. A car guide rail 3 extending in the height direction is provided in the hoistway. The car 1 has a car guide 15 that is guided by the car guide rail 3. When the car 1 moves up and down the hoistway, the car 1 is guided by the car guide rail 3.

  The door-open travel prevention device 2 further includes an emergency stop stopper 4 provided in the hoistway corresponding to the position of the landing. The emergency stop stopper 4 is arranged corresponding to the landing position on each floor. Two emergency stop stoppers 4 are provided on each floor, and the pair of emergency stop stoppers 4 are arranged at a predetermined distance in the height direction. The emergency stop stopper 4 is attached to the car guide rail 3.

  The emergency stop lever 23 rotates when the emergency stop lever 23 rotates about the guide rod 22, so that the emergency stop lever 4 overlaps with the emergency stop stopper 4 when viewed from the height direction, and the emergency stop stopper 4. And the release position that shifts when viewed from the height direction.

  5 is a plan view showing the car door 14, the triangular plate 25, and the rotation lever 26 of FIG. 1, and FIG. 6 is a plan view showing a state in which the car door 14 of FIG. 5 is displaced. FIG. 5 shows a state in which the car door 14 is in the door closed position, and FIG. 6 shows a state in which the car door 14 is in the door open position. When the car door 14 is in the door closing position, the rotation lever 26 is in contact with the inclined surface 251 of the triangular plate 25. The inclined surface 251 of the triangular plate 25 is a surface inclined with respect to the moving direction of the car door 14 in the triangular plate 25 when viewed from above. The inclined surface 251 of the triangular plate 25 is inclined with respect to the moving direction of the car door 14 so as to be separated from the car side wall 12 as the car door 14 is approached.

  The rotation lever 26 includes a rotation shaft 261 extending in the height direction, a roller 262 provided radially outward from the rotation shaft 261, and a connecting rod 263 that connects the rotation shaft 261 and the roller 262. have. The roller 262 contacts the inclined surface 251 when the car door 14 is in the door closed position. Further, the roller 262 contacts the surface 141 of the car door 14 when the car door 14 is in the door open position. The surface 141 of the car door 14 is a surface of the car door 14 that faces the landing. When the car door 14 is displaced between the door-closed position and the door-opened position, the roller 262 is displaced between a position in contact with the inclined surface 251 and a position in contact with the surface 141 of the car door 14. When the roller 262 is displaced, the rotation shaft 261 rotates.

  As shown in FIG. 1, the power transmission device 27 includes a first lever 271 having one end connected to the upper end of the rotating shaft 261 and a second lever connected to the other end of the first lever 271. The lever 272 includes a third lever 273 having one end connected to the other end of the second lever 272 and the other end connected to the upper end of the guide rod 22. When the rotation shaft 261 is rotated, each of the first lever 271, the second lever 272, and the third lever 273 is rotated, the guide rod 22 is rotated, and the emergency stop lever 23 is rotated. .

  FIG. 7 is a block diagram showing the elevator of FIG. The elevator further includes a door opening position detection device 5 that detects that the car door 14 is in the door opening position, and an elevator control panel 6 that controls the raising and lowering of the car 1. The detection result of the door open position detection device 5 is sent to the elevator control panel 6. The elevator control panel 6 controls the raising / lowering of the car 1 based on the detection result of the door opening position detection device 5. Specifically, when the car 1 is moving up and down, and the door open position detection device 5 detects that the car door 14 is in the door open position, the elevator control panel 6 is a hoisting machine ( (Not shown) is stopped.

  The door-opening travel prevention device 2 further includes an engagement position detection device 28 that detects that the emergency stop lever 23 is in the engagement position. Although not shown in FIG. 1, the engagement position detection device 28 is attached to the fixing member 21. The detection result of the engagement position detection device 28 is sent to the elevator control panel 6. The elevator control panel 6 controls the raising / lowering of the car 1 based on the detection result of the engagement position detection device 28. Specifically, when the car 1 is moving up and down and the engagement position detection device 28 detects that the car door 14 is in the engagement position, the elevator control panel 6 is Stop driving.

  The engagement position detection device 28 is connected in series to a signal line that sends the detection result of the door opening position detection device 5 to the elevator control panel 6. That is, the detection result of the engagement position detection device 28 is sent via a signal line that sends the detection result of the door opening position detection device 5 to the elevator control panel 6.

  Next, the operation of the door-opening travel prevention device 2 will be described. When the car door 14 is in the door closing position, the emergency stop lever 23 is in the release position. When the car door 14 is displaced from the door closed position to the door open position, the roller 262 is displaced from a position in contact with the inclined surface 251 to a position in contact with the surface 141 of the car door 14. Thereby, the rotation shaft 261 rotates, and the power of the rotation shaft 261 is transmitted to the guide rod 22 via the power transmission device 27. The guide rod 22 rotates when the power of the rotation shaft 261 is transmitted, and the emergency stop lever 23 is displaced from the release position to the engagement position.

  On the other hand, when the car door 14 is displaced from the door open position to the door close position, the roller 262 is displaced from a position in contact with the surface 141 of the car door 14 to a position in contact with the inclined surface 251. Thereby, the rotation shaft 261 rotates, and the power of the rotation shaft 261 is transmitted to the guide rod 22 via the power transmission device 27. The guide rod 22 rotates when the power of the rotation shaft 261 is transmitted, and the emergency stop lever 23 is displaced from the engagement position to the release position.

  When the car 1 is lowered with the emergency stop lever 23 in the engaged position, the emergency stop lever 23 hits the emergency stop stopper 4 positioned below the emergency stop lever 23 from above. As a result, the emergency stop lever 23 receives a force that moves upward with respect to the guide rod 22 from the intermediate position. The emergency stop lever 23 stops moving in the height direction of the emergency stop lever 23 when the force applied to the emergency stop lever 23 and the biasing force of the elastic member 24 are balanced. As a result, the lowering of the car 1 stops.

  On the other hand, when the car 1 is raised with the emergency stop lever 23 in the engaged position, the emergency stop lever 23 hits the emergency stop stopper 4 positioned above the emergency stop lever 23 from below. As a result, the emergency stop lever 23 receives a force that moves downward relative to the guide rod 22 from the intermediate position. The emergency stop lever 23 stops moving in the height direction of the emergency stop lever 23 when the force applied to the emergency stop lever 23 and the biasing force of the elastic member 24 are balanced. As a result, the raising of the car 1 stops.

  The biasing force of the elastic member 24 is set so that a part of the car entrance and a part of the landing doorway overlap when the force applied to the emergency stop lever 23 and the biasing force of the elastic member 24 are balanced. . Thereby, when raising / lowering of the car 1 is stopped by the door-opening travel prevention device 2, a part of the car entrance and a part of the landing entrance are overlapped.

  As described above, according to the door-opening travel prevention device 2 according to Embodiment 1 of the present invention, the guide rod 22 provided in the car 1 and extending in the height direction, and provided in the hoistway corresponding to the landing. Displaced between the engagement position overlapped when viewed from the height direction with the stopper 4 for emergency stop and the release position displaced when viewed from the height direction with the stopper for emergency stop 4 when viewed from the height direction. The emergency stop lever 23 that is movable in the height direction and the guide rod 22 are provided, and the movement direction of the emergency stop lever 23 when the emergency stop lever 23 moves relative to the guide rod 22 in the height direction. Is provided with an elastic member 24 that urges the emergency stop lever 23 in a direction opposite to that to restrict the movement of the emergency stop lever 23, and therefore, between the emergency stop lever 23 and the emergency stop stopper 4. The collision can be weakened. Thereby, the impact transmitted to the car 1 can be reduced.

  Further, since the emergency stop lever 23 is displaced between the engagement position and the release position in conjunction with the rotation of the guide rod 22 in the circumferential direction, the emergency stop lever 23 can be configured with a simple configuration. It can be displaced between the engagement position and the release position.

  Further, the door-opening travel prevention device 2 is interlocked with the rotation lever 26 that rotates in conjunction with the movement of the car door 14 between the door-closed position and the door-open position, and the rotation of the rotation lever 26. Since the power transmission device 27 that rotates the guide rod 22 is provided, the emergency stop lever 23 can be displaced between the engagement position and the release position by using the power of the car door 14. .

  The door-opening travel prevention device 2 includes an engagement position detection device 28 that detects that the emergency stop lever 23 is in the engagement position, and the detection result of the engagement position detection device 28 indicates that the car 1 is lifted or lowered. Therefore, the elevator control panel 6 can control the raising / lowering of the car 1 based on the detection result of the engagement position detection device 28.

  The detection result of the engagement position detection device 28 is sent via a signal line that sends the detection result of the door opening position detection device 5 that detects that the car door 14 is in the door opening position to the elevator control panel 6. The detection result of the engagement position detection device 28 can be sent to the elevator control panel 6 without using a new signal line connecting the engagement position detection device 28 and the elevator control panel 6. Further, when the door-opening travel prevention device 2 malfunctions, the elevator control panel 6 can stop the raising and lowering of the car 1.

  In the first embodiment, the configuration in which the emergency stop stopper 4 is attached to the car guide rail 3 has been described. However, the emergency stop stopper 4 may be attached to a hoistway.

  In the first embodiment, the configuration of the door-opening travel prevention device 2 including one emergency stop lever 23 has been described. However, the door-opening travel prevention device 2 including two emergency stop levers 23 is described. It may be. In this case, the pair of emergency stop levers 23 are arranged so as to sandwich the car 1 in the width direction.

  1 car, 2 door opening prevention device (elevator door opening prevention device), 3 car guide rail, 4 emergency stop stopper, 5 door opening position detection device, 6 elevator control panel, 11 car floor, 12 car side wall, 13 Car ceiling, 14 Car door, 15 Car guide, 21 Fixing member, 22 Guide rod, 23 Emergency stop lever, 24 Elastic member, 25 Triangular plate, 26 Rotating lever, 27 Power transmission device, 28 Engagement position detection device, 141 surface, 211 protruding plate, 212 protruding plate, 221 rod body, 222 protruding portion, 231 through hole, 232 groove, 241 spring, 242 spring, 251 inclined surface, 261 rotating shaft, 262 roller, 263 connecting rod, 271 first 1 lever, 272 2nd lever, 273 3rd lever.

Claims (5)

A guide rod provided in the cage and extending in the height direction;
Between the emergency stop stopper provided in the hoistway corresponding to the landing and the engagement position overlapped when viewed from the height direction and the release position shifted from the emergency stop stopper when viewed from the height direction An emergency stop lever that is displaced and movable in a height direction relative to the guide rod;
When the emergency stop lever is provided on the guide rod and moves relative to the guide rod in the height direction, the emergency stop lever is biased in a direction opposite to the moving direction of the emergency stop lever. And an elastic member for restricting the movement of the emergency stop lever.   2. The elevator according to claim 1, wherein the emergency stop lever is displaced between the engagement position and the release position in conjunction with rotation of the guide rod in a circumferential direction. Door open travel prevention device. A rotation lever that rotates in conjunction with the movement between the door closing position and the door opening position of the car door;
The elevator door-opening travel prevention device according to claim 1, further comprising: a power transmission device that rotates the guide rod in conjunction with rotation of the rotation lever. An engagement position detection device for detecting that the emergency stop lever is in the engagement position;
The detection result of the engagement position detection device is sent to an elevator control panel that controls the raising and lowering of the car, The elevator door-opening travel according to any one of claims 1 to 3. Prevention device.   The detection result of the engagement position detection device is sent via a signal line that sends the detection result of the door open position detection device that detects that the car door is in the door open position to the elevator control panel. The door opening travel prevention apparatus of the elevator of Claim 4.

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