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
  • B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
• • 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
  • B66B5/20—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 by means of rotatable eccentrically-mounted members

Definitions

• the present invention relates to a durable safety device that can easily stop even when the speed is increased in the upward direction.
• the conventional safety device 20 is attached to a lower part of a cab guided by a guide rail 21 in a hoistway.
• the speed of the cab is detected by the governor via the governor rope 22 provided in the hoistway, and this speed data is transmitted to the emergency stop device 23 connected to the governor rope 22.
• the emergency stop device 23 raises the lever 24 when the speed data exceeds a predetermined speed.
• the square 25 provided at the end of the lever 24 is pushed upward, and the clamp 26 and the guide rail 21 provided on both sides of the guide rail 21 are connected to each other. Ko ⁇ 25 is sandwiched between them.
• the conventional emergency stop device 20 functions only when the cab speeds up in the downward direction, so that when the cab speeds up, the cab can be emergency stopped. Did not. Therefore, as an emergency stop device effective for increasing the speed of the cab in both the upper and lower directions, the one shown in Japanese Patent No. 269876.5 is proposed.
• the emergency stop device 30 disclosed in Japanese Patent No. 26987665 has a pair of ⁇ edges 31 and 32 for stopping the cab, and the cab is positioned below.
• the edge 31 slides upward, and the edge 31 bites between the guide rail 33 and the frame 34, so that the cab stops emergency.
• the edge 32 slides downward, and the page 32 bites between the guide rail 33 and the frame 35, thereby causing the cage to move. The room shuts down.
• the conventional safety gear 30 has a problem in durability because of its complicated structure.
• the emergency stop device is not used during normal operation of the elevator, there is a risk that dust may adhere to the drive part of the emergency stop device, causing the movement to become poor. Therefore, there is a need for a safety device that has a simple structure and operates reliably in an emergency.
• An object of the present invention is to solve such a problem and to provide an emergency stop device for an elevator that is excellent in durability. Disclosure of the invention
• the elevator emergency stop device of the present invention is provided in a cab of an elevator to stop the cab by pressing a guide rail for guiding the cab. It is equipped with a roller rolling mechanism that presses the guide rail when moving in any direction exceeding a predetermined speed.
• the elevator emergency stop device of the present invention is provided in an elevator cab, and presses a guide rail for guiding the cab to stop the cab.
• the gap between the guide rail and the rotating shaft is larger than the minor axis and smaller than the major axis.
• the guide port extends in the direction of the guide rail while the cab moves within the specified speed.
• a lever that rotates the rollers and presses the guide rails with the opening when the cab moves beyond a predetermined speed. I do.
• a long hole formed at the tip of the lever and extending in the longitudinal direction of the lever, a pin provided at the peripheral portion on the short diameter of the opening and slidably inserted into the long hole, and a car;
• the guide rail and the retainer provided with a holding groove for accommodating the roller are further provided. It is characterized by being narrower than the sum of and the major diameter of the mouth.
• the side wall of the housing groove is inclined in the vertical direction. Further, it is characterized in that it is provided with an inclined plate which is exchangeably attached to the side wall of the accommodation groove and which is inclined in the vertical direction.
• FIG. 1 is a front view showing a cab provided with the safety device according to the present embodiment.
• FIG. 2 is a front view showing the safety device according to the present embodiment.
• FIG. 3 is a cross-sectional view of the safety device according to the present embodiment cut along line A_A. FIG. It is.
• Figure 5 shows the operation of the safety gear when the cab speeds up.
• FIG. 6 is a partially enlarged view showing a modification in which the right side wall of the accommodation groove provided in the gripper is vertically inclined.
• FIG. 7 is a partially enlarged view showing a modification in which the shape of the opening is partially deformed.
• FIG. 8 is a partially enlarged view showing a modification in which an inclined plate inclined in the vertical direction is replaceably attached to the right side wall of the gripper.
• FIG. 9 is a front view showing a conventional safety device.
• FIG. 10 is a front view showing a conventional safety device.
• FIG. 11 is a front view showing a conventional safety device. BEST MODE FOR CARRYING OUT THE INVENTION
• FIG. 1 is a front view showing a cab 1 provided with an emergency stop device 10 according to an embodiment of the present invention.
• the emergency stop device 10 is attached to the lower part of the cab 1 guided by the guide rail 2 in the hoistway. Functions to stop cab 1 by pressing.
• FIG. 2 is a front view showing the safety device 10 of the present embodiment
• FIG. 3 is a cross-sectional view of the safety device 10 of the present embodiment, taken along line AA.
• 11 is a frame attached to the lower part of the cab 1, 12 is attached to the center of the frame 11, and accommodates the guide rail 2 in the receiving groove 12a 13 is a lever that is rotatably fixed to the side of the frame 11, 14 is attached to the lever 13, — Governor rope that swings the tip of 13 up and down, 15 is rotatably fixed to the ring 12 by the rotating shaft 15 a, and the guide rail 2 is attached to the holding wall 12 a of the ring 12
• the stored oval-shaped mouth, 16 is formed at the tip of Reno 13, a long hole extending in the longitudinal direction of lever 13, 17 is protruding from the peripheral edge of the roller 15 on the short side
• the pin is provided and slidably inserted into the long hole 16.
• the square 15 has an elliptical shape in which the distance between the guide rail 2 and the rotating shaft 15a is wider than the minor axis and narrower than the major axis. For this reason, when the opening 15 is arranged so that the extending direction of the guide rail 2 is parallel to the major axis direction of the opening 15, a predetermined distance is provided between the roller 15 and the guide rail 2. An interval is formed. When the guide rail 2 is extended so that the extending direction of the guide rail 2 is parallel to the minor axis direction of the opening 15, the roller 15 comes into contact with the guide rail 2.
• the groove width of the accommodation groove 12a is wider than the sum of the width of the guide rail 2 and the minor axis of the square 15 and narrower than the sum of the width of the guide rail 2 and the major axis of the square hole 15. Has been adjusted as follows.
• a governor (not shown) detects an increase in speed of cab 1 and Same speed Grab the governor rope 14 that is being pulled downwards by degrees.
• the lever 13 fixed to the governor rope 14 is pulled up and inserted into the long hole 16 at the end of the lever 13 as shown in Fig. 4.
• Pin 17 is pushed upward. Since the pin 17 is fixed to the square 15, the roller 15 rotates clockwise around the rotation axis 15 a.
• the opening 15 is not circular but long in the vertical direction. Therefore, the opening 15 is sandwiched between the jaws 12 and the guide rail 2, and the square 15 bites into (presses) the jaws 12 and the guide rail 2, thereby causing the car room 1 to be in an emergency. Stop.
• a governor (not shown) detects an increase in the speed of cab 1 and Grab the governor rope 14 that is being pulled upward at the same speed.
• the lever 13 fixed to the governor rope 14 is pulled down and inserted into the long hole 16 at the tip of the lever 13 as shown in FIG.
• the pressed pin 17 is pushed down. Since the pin 17 is fixed to the roller 15, the roller 15 rotates counterclockwise in the figure around the rotation axis 15 a. For this reason, the mouth 15 is sandwiched between the jaws 12 and the guide rails 2, and the jaw 15 bites into (presses) the jaws 12 and the guide rails 2, thereby causing the cabin 1 to be in an emergency. Stop.
• the elliptical square 15 is rotated by the vertical movement of the lever 13 so that the roller 15 bites into the guide rail 2.
• the cab 1 With a very simple configuration such as (pressing), the cab 1 can be surely stopped in an emergency even if the speed is increased in either direction. For this reason, durability and reliability are greatly improved as compared with the conventional safety gear.
• FIG. 6 is a partially enlarged view showing an example in which the right side wall 40 of the accommodation groove 12 a provided in the gripper 12 is vertically inclined.
• the lower half of the right side wall 40 is inclined so that the groove width of the accommodation groove 12a gradually increases.
• the ⁇ 15 rotates clockwise in the figure, and the ⁇ 15 enters the upper half of the right side wall 40.
• the amount of penetration is smaller when the square 15 rotates counterclockwise in the figure according to the upward speed increase of the room 1 and the square 15 cuts into the lower half of the right side wall 40.
• the static force when cab 1 accelerates upward is smaller than the static force when cab 1 accelerates downward.
• FIG. 7 is a partial view showing an example in which the shape of the roller 41 is partially deformed. It is an enlarged view. As shown in the figure, the upper right side portion 41 a of the roller 41 is cut off, so that the opening 41 rotates clockwise in the figure according to the downward acceleration of the cab 1.
• FIG 8 is a partially enlarged view showing an example in which an inclined plate 42 inclined in the vertical direction is replaceably attached to the right side wall 40 of the gripper 12.
• the lower half of the inclined plate 4 2 is inclined so that the groove width gradually widens, so that the square ⁇ 15 moves clockwise in the figure according to the speed increase in the lower direction of the cab 1.
• the opening 15 turns counterclockwise in the figure to match the speed increase in the cab 1 as compared to the case where However, the amount of penetration is smaller when the square 15 penetrates into the lower half of the inclined plate 4 2. Therefore, the static force when cab 1 accelerates upward is smaller than the static force when cab 1 accelerates downward.
• the lower half of the inclined plate 42 is inclined so that the groove width gradually increases.
• the upper half of the inclined plate 42 is inclined so that the groove width gradually decreases. Is also good. In this case, the same effect as in the third modification is obtained. It is. Industrial applicability
• the present invention can provide an elevator emergency stop device having a simple structure that can easily stop the cab even when the speed is increased in the upward direction. Suitable for elevators that require durability.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Maintenance And Inspection Apparatuses For Elevators (AREA)

Priority Applications (5)

Applications Claiming Priority (1)

Publications (1)

Family

ID=11737975

Family Applications (1)

Country Status (5)

Cited By (3)

Families Citing this family (3)

Citations (3)

Family Cites Families (5)

• 2001
  • 2001-11-27 KR KR1020037012592A patent/KR100620436B1/ko active IP Right Grant
  • 2001-11-27 CN CNB01823075XA patent/CN1297466C/zh not_active Expired - Fee Related
  • 2001-11-27 EP EP01274836.4A patent/EP1449800B1/de not_active Expired - Lifetime
  • 2001-11-27 JP JP2002589150A patent/JP4019941B2/ja not_active Expired - Fee Related
  • 2001-11-27 WO PCT/JP2001/010325 patent/WO2003045828A1/ja active Application Filing

Patent Citations (3)

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