JPWO2015015632A1 - Elevator equipment - Google Patents

Abstract

The present invention provides an elevator apparatus capable of suppressing the lifting of the tension weight while restraining the loss or breakage of the function of the tension weight against the expansion and contraction of the rope, and suppressing the jumping of the tension weight during emergency braking. A lifting body (3,4) suspended by a main rope (1) and moving up and down the hoistway (2), a governor rope (11), and a tension applying member (21) having a tension weight (12) A connecting body (13) and an emergency braking device (22), and the governor rope (11) is composed of a governor pulley (9) and a tension pulley (10) provided by a tension applying member (21). In the elevator device (100) hung endlessly between the guide rail (14) for guiding the vertical movement of the tension applying member (21), and the friction slidably attached to the guide rail (14) Unit (16) and tensioning member (21) connected to friction unit (16) It has been.

Description

  The present invention relates to an elevator apparatus.

  In general, an elevator apparatus is provided with a speed governor that constantly monitors the ascending / descending speed of a car and makes an emergency stop of the car when the car falls into a predetermined overspeed state. Specifically, the speed governor, when the raising / lowering speed of the car exceeds the rated speed and reaches the first overspeed (usually about 1.3 times the rated speed), the power supply of the hoisting machine that drives the car and The power supply of the control device that controls the hoisting machine is shut off. The speed governor is provided with an emergency stop device provided in the car when the car descending speed exceeds the first overspeed and reaches the second overspeed (usually about 1.4 times the rated speed) for some reason. To stop the car mechanically.

  And as background art of such a governor, there is JP-A-2001-19312 (Patent Document 1). In this publication, a pulley around which a lower end of a governor rope arranged in the vertical direction of a hoistway is wound, a movable link to which the pulley is rotatably mounted, and a tension provided at a free end of the movable link It is described that it has a weight and a bracket attached to a lower part of a guide rail standing on the hoistway via a rail clip and pivotally supporting the movable link.

JP 2001-19312 A

  In the speed governor, the operation of such a brake which is mounted on the hoisting machine by some reason, the operation of the safety device, the car is emergency braking by collision with the buffer. At this time, the car governor rope connected to the car through the connecting body decelerates in conjunction with the deceleration of the car, but the anti-car governor rope continues to rise due to inertia. The tension weight suspended at the lower end of the speed rope may jump up. However, in the above-mentioned conventional device, this tension weight is not sufficiently lifted up, and if it jumps up significantly, the governor body, the governor rope, the tension weight and the equipment installed in the vicinity will be damaged. There was a risk of inviting. In particular, this problem is conspicuous in high-speed and high-lift elevator devices that are in great demand in recent years.

  On the other hand, in order to prevent the above-mentioned jumping up, restraining the tension weight in the vertical direction means that the tension weight can be reduced against the governor rope contraction due to the secular governor rope elongation and seasonal humidity change. The position does not follow the governor rope, and the tension weight may be lost or damaged.

  The present invention has been made from the state of the prior art described above. The purpose of the present invention is to prevent the tension weight from functioning or breaking with respect to the expansion and contraction of the rope, and to prevent the tension weight from bouncing during emergency braking. An object of the present invention is to provide an elevator apparatus capable of suppressing the raising.

In order to achieve the above object, an elevator apparatus according to the present invention includes a lifting body that is suspended by a main rope and moves up and down a hoistway, a governor rope that is driven according to the lifting and lowering of the lifting body, A tension applying member having a tension weight for applying tension to the governor rope, a connecting body for connecting the elevator body and the governor rope, and the elevator body when the overspeed of the elevator body is detected. An emergency braking device that applies emergency braking to the body, wherein the governor rope is disposed below the hoistway and a governor pulley below the hoistway and at a position opposite the governor pulley. In the elevator apparatus that is endlessly hung between the tension pulley provided in the tension applying member that is disposed,
A guide rail that guides the vertical movement of the tension applying member; and a friction unit that is slidably attached to the guide rail. The tension applying member is connected to the friction unit. .

  ADVANTAGE OF THE INVENTION According to this invention, the elevator apparatus which can suppress the jumping up of a tension weight can be provided, suppressing the function loss and damage of a tension weight with respect to the expansion and contraction of a rope, and in the case of emergency braking.

It is a schematic block diagram of an elevator apparatus. It is a front view which shows one Example of the elevator apparatus which concerns on this invention. It is an enlarged view of a friction unit. It is a front view which shows the other Example of the elevator apparatus which concerns on this invention.

  Embodiments of an elevator apparatus according to the present invention will be described below with reference to the drawings.

  As shown in FIG. 1, the elevator apparatus 100 according to the present embodiment is disposed at the upper part of the hoistway 2 and a car 3 and a counterweight 4 that are elevating bodies that elevate and lower the hoistway 2 suspended by the main rope 1. A hoisting machine 5 provided with a brake for driving the main rope 1, a beam pulley 6 disposed in the vicinity of the hoisting machine 5, a compen- sion rope 7 connected to the lower part of the car 3 and the counterweight 4, Compensation pulley 8 disposed at the lower end of compensation rope 7, governor pulley 9 of the governor disposed at the upper part of hoistway 2, and opposite position of governor pulley 9 below hoistway 2 A tension pulley 10 disposed on the governor pulley 9, a governor rope 11 that is endlessly hung between the tension pulley 9 and the tension pulley 10, and a load on the tension pulley 10 to bias the governor rope 11 Apply tension A tension weight 12, a connecting body 13 for connecting the car 3 and the governor rope 11, an emergency stop device 22 for emergency braking of the car 3 when the car 3 reaches a predetermined overspeed, even if the car in the road bottom collide, and a buffer 15 to stop to reduce the impact as people in the car is safe. In the present embodiment, the tension pulley 10 and the tension weight 12 are provided on the tension applying member 21. Since the governor rope 11 is connected to the car 3 by the connecting body 13, in this embodiment, the speed governor rope 11 is driven in accordance with the raising and lowering of the car 3 that is the lifting body. The car 3 is guided by the car guide rail 25 and moves up and down in the hoistway 2, and the emergency stop device 22 grips the car guide rail 25 and operates the emergency braking of the car 3 when operated.

  In the first embodiment, the function of the tension applying member 21 for applying tension to the governor rope 11 with respect to the expansion and contraction of the rope is not lost, and the operation of the brake and the emergency stop device are performed. In the emergency braking of the car 3 due to the above operation and the collision with the shock absorber, a device is devised to prevent the tension applying member 21 from jumping up. Specifically, as shown in FIG. 2, a guide rail 14 that is provided opposite to the right and left sides of the tension applying member 21 at the lower part of the hoistway 2 and guides the movement of the tension applying member 21, and the tension applying member 21. Passed between the friction unit 16 and the friction unit 16 provided between the guide rail 14 and slidingly contacting the guide rail 14 to prevent the tension application member 21 from jumping up, the rod 17 provided on the upper part of the tension application member 21, and the friction unit 16. Bracket 18, rod 17 is inserted, buffer spring 19 is disposed between tension applying member 21 and bracket 18, and receiving member 20 is mounted on rod 17 at a position higher than bracket 18. ing. As described above, the friction unit 16 is attached to each of the pair of guide rails 14. The tension applying member 21 connects the friction unit 16 attached to the pair of guide rails 14 by a bracket 18 and is connected to the friction unit 16 through a rod 17 inserted through the bracket 18. Note that a predetermined gap is provided between the buffer spring 19 and the bracket 18 and between the bracket 18 and the receiving member 20, respectively.

  As shown in FIG. 3, the friction unit 16 includes a pair of arms 16a rotatably supported by the bracket 18, a rod 16b inserted through the upper portions of the pair of arms 16a, and the pair of arms 16a in the direction of the guide rail 14. And a shoe 16d supported by the arm 16a and slidably slidably contacting the guide rail 14.

  In the first embodiment, when the tension applying member 21 gradually moves downward as the governor rope 11 elapses over time, there is no gap between the bracket 18 and the backing plate material 20, and the tension is further increased. When the applying member 21 moves downward, the friction unit 16 is moved downward together with the tension applying member 21 by the receiving plate member 20 through the bracket 18 while sliding on the guide rail 14 by the shoe 16d.

  On the other hand, the rope may shrink in a humid season or the like, and when the tension applying member 21 gradually moves upward, the buffer spring 19 provided on the bracket 17 and the rod 17 attached to the tension applying member 21 When the tension applying member 21 further moves upward, the friction unit 16 moves upward via the bracket 18 by the buffer spring 19. As described above, the position of the friction unit 16 due to the expansion and contraction of the governor rope 11 is adjusted.

  Thus, the tension applying member 21 and the friction unit 16 do not transmit the moving force to the friction unit 16 when the tension applying member 21 moves in the vertical direction within a range of a predetermined distance. Is moved in the vertical direction more than a predetermined distance, the moving force is transmitted to the friction unit 16, and the friction unit 16 follows and moves while generating the friction force. Therefore, it is possible to secure a state in which the loss of function of the tension weight is sufficiently secured against the expansion and contraction of the rope.

  On the other hand, with respect to prevention of jumping of the tension applying member 21 during emergency braking of the car 3, for some reason, the car side governor rope connected to the car 3 via the connecting body 13 during emergency braking of the car 3. However, the anti-car side governor rope continues to rise due to inertia, and the tension applying member 21 suspended at the lower end of the governor rope 11 jumps up. The tension applying member 21 that has jumped up is buffered by a buffer spring 19 interposed between the tension applying member 21 and the bracket 18, and the bracket 18 that has received a large upward force due to the collision of the buffer spring 19. When the shoe 16d of the friction unit 16 is slidably contacted with the guide rail 14, it is decelerated by the frictional resistance, then stopped, and it is prevented from rising above a predetermined position.

  Therefore, according to the present embodiment, according to the first example, the tension applying member 21 is not lost in the function of the tension weight and the friction unit with respect to the expansion and contraction of the rope, and at the time of emergency braking. By inhibiting the jumping up of the governor, it is possible to prevent damage to the governor body, the governor rope, the tension applying member, and the devices installed in the vicinity.

  Further, since the rod 17 is provided with a buffer spring 19 at a portion between the bracket 18 and the tension applying member 21, the force is transmitted to the bracket 18 while buffering the impact of the jumping tension applying member 21, and the buffer 17 is buffered. Since the force that could not be canceled by the frictional unit 16 and the guide rail 14 is gradually canceled by the sliding, it is possible to suppress the jumping of the tension applying member 21 better.

  Here, a second embodiment of the elevator apparatus according to the present invention will be described with reference to FIG. In addition, the same code | symbol is attached | subjected to the thing equivalent to what was mentioned above.

  The elevator apparatus according to the second embodiment is different from the first embodiment described above in that the friction unit 16 is disposed below the tension applying member 21 as shown in FIG. That is, the guide rail 24 is installed in a pair in the lower part of the hoistway 2 and guides the movement of the tension applying member 21. The guide rail 24 is provided between the tension applying member 21 and the guide rail 24. A friction unit 26 that touches and prevents the tension applying member 21 from jumping up, a rod 27 provided below the tension applying member 21, a bracket 28 passed between the friction units 26, and the rod 27 are inserted into the tension applying member 21. And a bracket spring 28 disposed between the bracket 28 and a receiving member 30 mounted on the rod 27 at a position lower than the bracket 28.

  According to the second embodiment, similar to the first embodiment described above, the tension applying member 21 jumps without losing the function of the tension weight with respect to the expansion and contraction of the rope and during emergency braking. By suppressing the raising, it is possible to prevent damage to the governor body, the governor rope, the tension applying member, and the devices installed in the vicinity.

In the first and second embodiments, the example in which the car 3 and the governor rope 11 are connected by the connecting body 13 as the lifting body has been described. However, such a configuration is applied to the counterweight 4 as the lifting body. It may be a thing.
Further, in the present embodiment, the bracket 18 and the rod 17 are used as a configuration for connecting the tension applying member 21 and the friction unit 16, but the configuration is not limited thereto. For example, without providing a pair of guide rails, only one round bar is set up as a guide rail, and a cylindrical friction unit is slidably brought into sliding contact with the sliding surface of the round bar. The structure which connects may be sufficient.

DESCRIPTION OF SYMBOLS 1 Main rope 2 Hoistway 3 Car 4 Balance weight 5 Hoisting machine 6 Beam pulley 7 Compen rope 8 Compen pulley 9 Governor pulley 10 Tension pulley 11 Governor rope 12 Tension weight 13 Link body 14, 24 Guide rail 15 Shock absorber 16, 26 Friction unit 16a Arm 16b Rod 16c Spring 16d Shoe 17, 27 Rod 18, 28 Bracket 19, 29 Buffer spring 20, 30 Receiving member 21 Tension applying member 22 Emergency braking device 25 Car guide rail 100 Elevator device

In order to achieve the above object, an elevator apparatus according to the present invention includes a lifting body that is suspended by a main rope and moves up and down a hoistway, a governor rope that is driven according to the lifting and lowering of the lifting body, A tension applying member having a tension weight for applying tension to the governor rope, a connecting body for connecting the elevator body and the governor rope, and the elevator body when the overspeed of the elevator body is detected. An emergency braking device that applies emergency braking to the body, wherein the governor rope is disposed below the hoistway and a governor pulley below the hoistway and at a position opposite the governor pulley. In the elevator apparatus that is endlessly hung between the tension pulley provided in the tension applying member that is disposed,
A guide rail that guides the vertical movement of the tension applying member; and a friction unit that is slidably attached to the guide rail. The tension applying member is connected to the friction unit ;
The tension applying member and the friction unit do not transmit the moving force to the friction unit when the tension applying member moves in the vertical direction within a range of a predetermined distance, and the tension applying member is not less than a predetermined distance. When moving in the vertical direction, the moving force is transmitted to the friction unit, and the friction unit moves following the friction unit while generating the friction force .

Claims (4)

A lifting body that is suspended by a main rope and moves up and down the hoistway, a governor rope that is driven in accordance with the lifting and lowering of the lifting body, and a tension that has a tension weight for applying tension to the governor rope And a connecting member that connects the elevating body and the governor rope, and an emergency braking device that applies emergency braking to the elevating body when an overspeed of the elevating body is detected. The machine rope is located between the governor pulley disposed above the hoistway and the tension pulley provided on the tension applying member disposed below the hoistway and at a position opposite the governor pulley. In an elevator device hung endlessly,
A guide rail that guides the vertical movement of the tension applying member; and a friction unit that is slidably attached to the guide rail. The tension applying member is connected to the friction unit. Elevator device.   2. The elevator apparatus according to claim 1, wherein the tension applying member and the friction unit transmit the moving force to the friction unit when the tension applying member moves in the vertical direction within a range of a predetermined distance. The elevator is characterized in that when the tension applying member moves in the vertical direction for a predetermined distance or more, the moving force is transmitted to the friction unit, and the friction unit moves following the friction unit while generating the friction force. apparatus.   3. The elevator apparatus according to claim 2, wherein the guide rail is provided opposite to the left and right sides of the tension applying member, the friction unit is attached to each of the pair of guide rails, and the tension applying member is a pair of the tension applying members. An elevator apparatus, wherein the friction unit attached to the guide rail is connected by a bracket, and is connected to the friction unit via a rod inserted through the bracket.   An elevator apparatus according to claim 3, said rod elevator apparatus characterized in that a buffer spring in a portion between the tensioning member and the bracket.

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