KR20020054074A - Governor of a lift - Google Patents

Abstract

PURPOSE: A governor of an elevator is provided to improve the safety of passengers and cargo by urgently stopping an elevator even when an elevator overspeeds or the door of the elevator is not stopped in the right position. CONSTITUTION: A governor of an elevator comprises a frame(10) including a fixed panel(12) having rope holes and front and rear panels(14) formed before and behind the fixed panel, a round main wheel(20) installed rotatably by being combined with the front and rear panels, plural pendulums(30) installed on the main wheel and widening outward by the centrifugal force when the main wheel overspeeds, a pair of overspeed switches(40) installed on the frame to generate a signal for cutting off power to a hoist and operating a brake of the hoist, a first rope fixing body(50) formed on one fixed panel of the frame to urgently stop the elevator moving upward by restraining a rope, and a second rope fixing body(60) formed on the other fixed panel to urgently stop the elevator moving downward.

Description

GOVERNOR OF A LIFT}

The present invention relates to a governor of an elevating conveying head, and more particularly, is installed in the machine room of an elevator, so that when the platform is abnormally speeded up or when the platform is out of schedule with the door of the platform open, the platform is emergencyly stopped. The present invention relates to a governor of an elevated transport head which prevents safety accidents such as falling of passengers and cargo.

Elevators are equipped with an overspeed governor that prevents when the platform is abnormally descended due to mechanical problems, such as when a rope is broken. Such a governor is usually installed in the machine room and connected to the platform ("ropes"). When the main wheel is rotated and the speed of the platform is abnormally lowered, the pendulum of the main wheel of the governor opens outwards by centrifugal force, and the speed switch is operated to cut off the electric motor power of the hoisting machine. The platform is stopped by operating the brake.

However, if the lifter brake is broken or the rope is broken, the platform cannot be stopped.When the speed exceeds 1.3 times, the pendulum of the governor's main wheel is opened again and the rope catcher is pulled to pull the rope catcher. Is fixed, so emergency stop is possible.

However, in the conventional governor as described above, the governor operates to prevent the platform from falling only when the platform is freely falling in the downward direction or overspeeding in the downward direction due to the cutting of the rope. In case of overspeed, there is no separate safety device except the overspeed switch that cuts off the main power.Therefore, there is a problem in passenger safety during ascent, and the rope may slip over the lift of the elevator winch or the pulley of the winch. There was a problem that causes the safety accident because there is no function to stop the platform by detecting it when the platform moves in the vertical direction with the door open at the platform due to an abnormality of the safety circuit or the like.

The present invention is to solve the above problems, the object of the platform is not only to make an emergency stop when the platform speeding in the up and down direction, but also to leave the designated area in the vertical direction with the platform open at the platform. In the case of emergency stop, it is to provide a lift-type governor governor to improve the safety of passengers or cargo.

In order to achieve the above object, the present invention in the governor is installed to restrain the rope when the lifting platform of the vehicle moving in the vertical direction is abnormally elevated, the rope hole in which the rope is moved to the left and right A frame having a fixed plate formed and a front plate and a rear plate formed so as to have a storage space inside and behind the fixed plate; A circular main wheel coupled to the front and rear plates of the frame to be rotatably installed; A plurality of pendulums provided on the main wheels to be opened outwards by centrifugal force when the main wheels are speeded over a predetermined speed; A pair of speed switches installed on a frame corresponding to the left and right sides of the main wheel so that when the pendulum protrudes outward by centrifugal force, the pendulum contacts and cuts off the power of the winch machine; A first rope catcher fixing plate installed on a fixing plate in contact with a rope hole on one side of the frame, a first rope catcher installed on a surface opposite to the first rope catcher fixing plate and provided with a locking shaft, and having a locking shaft; 1, a locking portion is formed to support the locking shaft is formed so that the rope catcher is positioned and fixed to the upper side of the first rope catcher fixing plate, and when the pendulum protrudes outward by centrifugal force in the downward speed of the main wheel, it contacts and rotates The first release member rotatably coupled to the frame to release the restraint of the first rope catcher, which is fixed by the first rope catcher, and the first rope catcher which is released downward by the restraining force by the operation of the first release member. The first external force is applied so that the rope which is moved downward is clamped by applying a pressing force to bring it into close contact with the first rope catcher fixing plate. A first rope fixing body configured of the member; A second rope catcher fixing plate installed on a fixing plate in contact with the other rope hole of the frame opposite to the first rope fixing body, and installed on the surface opposite to the second rope catcher fixing plate so as to be movable; When the second rope catcher and the second rope catcher is located on the upper side of the second rope catcher fixing plate is formed a locking portion for supporting the locking shaft and the pendulum protrudes outwards by centrifugal force in the upward speed of the main wheel The second release member is rotatably coupled to the frame so that the restraint of the second rope catcher, which is fixed by the engaging portion while being rotated in contact with the second release member, is released downward by the operation of the second release member. A rope moved downward is pinched by applying a pressing force to the moved second rope catcher so as to be in close contact with the second rope catcher fixing plate. And a second rope fixing body including a second external force applying member configured to be fixed.

And, in order to achieve the object of the present invention, if the detection signal is applied from the detection unit for detecting when leaving the designated area of the platform in the upper and lower directions in the open state of the platform, the magnetized state The plunger sucked in is protruded by the elastic force of the elastic member coupled thereto, and is attached to each of the first and second release members so as to contact the pendulum of the main wheel, thereby restraining the rope which is moved up and down. The solenoid is driven to be further characterized in that it is made.

According to the governor of the lifting type conveying head according to the present invention, not only when the platform is freely falling in the downward direction or overspeeding in the downward direction due to the cutting of the rope, but also the platform is defined in the upward direction. The emergency stop by the governor is possible when the vehicle is overspeed, and the platform is opened with the door of the platform open due to the brake of the elevator hoist, the rope slipping on the pulley of the hoist, or the safety circuit. Even when the vehicle moves up and down, the governor operates to make emergency stop possible, thereby preventing safety accidents and improving safety.

Figure 1a is a view showing the governor of the liftable carrier according to the first embodiment of the present invention,

1B is an enlarged exploded perspective view of portion A of FIG. 1A;

Figure 2a is a first state of use for explaining the state of use of the governor of the lifting-type carrying head according to the first embodiment of the present invention,

Figure 2b is a second state of use for explaining the state of use of the governor of the lifting-type carrying head according to the first embodiment of the present invention,

Figure 3a is a view showing the governor of the lifting carriage head according to a second embodiment of the present invention,

3B is an enlarged exploded perspective view of portion B of FIG. 3A;

Figure 4a is a first state of use for explaining the state of use of the governor of the lifting-type carrying head according to the second embodiment of the present invention,

Figure 4b is a second state diagram for explaining the state of use of the governor of the lifting carriage according to the second embodiment of the present invention.

* Description of the symbols for the main parts of the drawings *

10: frame, 20: wheel,

30: pendulum, 40: speed switch,

50: the first rope fixing body, 52: the first rope fixing plate,

54: first rope catcher, 56: first release member,

58: the first external force applying member, 60: the second rope fixing body,

62: second rope catcher, 64: second rope catcher,

66: second release member, 68: second external force applying member,

70: shaft, 90: solenoid,

92: plunger, 94: elastic member,

100: pin member.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

Figure 1a is a view showing the governor of the lifting-type conveying head according to the first embodiment of the present invention, Figure 1b is an enlarged exploded perspective view of the portion A of Figure 1a, Figure 2a is a lift according to the first embodiment of the present invention A first use state diagram for explaining the use state of the governor of the food conveying head, Figure 2b is a second use state diagram for explaining the use state of the governor of the lifting-type transport head according to the first embodiment of the present invention, Parts that are not important in the description of the invention have been omitted.

The governor of the liftable conveying means according to the first embodiment of the present invention has a fixing hole 12 and a front and rear portions of the fixing plate 12, which is formed in a base frame of a machine room, in which a rope hole is formed on the left and right sides of the lifting mechanism. Frame 10 having a front and rear plate 14 formed to have a storage space therein, and a circular main wheel 20 rotatably installed by a central axis coupled to the front and rear plates 14 of the frame 10. And a plurality of pendulums 30 installed on the main wheels so that the main wheels 20 are outwardly driven by the centrifugal force when the main wheels 20 are speeded over a predetermined speed, and the pendulums 30 protrude outward by the centrifugal force. And a pair of speed switches 40 and a platform installed on the frame 10 corresponding to the left and right sides of the main wheel so as to cut off power of the hoist (not shown) and generate a signal for operating the brake of the hoist. Abnormally The first rope fixing body 50 is configured on one side of the fixed plate 12 of the frame so that the platform is pressurized and constrained by the rope when moved downward, while the platform is moved upward when the platform is abnormally moved upward. The second rope fixing body 60 is formed on the other fixing plate 12 of the frame to restrain the rope so that the platform can be emergency stop.

In addition, the first rope fixing body 50 is a first rope catcher fixing plate 52 installed on the fixing plate 12 in contact with the rope hole on one side of the frame, as shown in Figure 1b, the first rope catcher The first rope catcher 54 and the first rope catcher 54 which are installed on the surface opposite to the fixing plate 52 and the first rope catcher 54 are fixed to be positioned above the first rope catcher fixing plate 52. When the pendulum protrudes outward by centrifugal force at a speed in the downward direction of the main wheel 20, the first release member 56 is coupled to be rotated while contacting with the pendulum to release the restraint of the first rope catcher 54. The clamping force is released by the operation of the release member 56 to apply a pressing force to the first rope catcher 54 moved downward so as to be in close contact with the first rope catcher fixing plate 52 to pinch the pinch fixed Consisting of a first external force applying member (58) .

In addition, the second rope fixing body 60 is a second rope catcher fixing plate 62 which is installed on the fixing plate 12 in contact with the other rope hole of the frame 10 facing the first rope fixing body 50. And a second rope catcher 64 installed on the surface opposite to the second rope catcher fixing plate 62 and the second rope catcher 64 of the second rope catcher fixing plate 62. The second release member is fixed to the upper side and coupled to rotate when the pendulum protrudes outward by centrifugal force in the upward direction of the main wheel 20 in contact with the second rope catcher 64 while being rotated. 66) and a downward force by applying a pressing force to the second rope catcher 64 moved downward by the restraining force by the operation of the second release member 66 so as to be in close contact with the second rope catcher fixing plate 62. The second external force applying member (68) to hold the rope is moved to the pinch fixed It is.

In addition, the first and second rope catcher fixing plates 52 and 62 have lower portions coupled to the front and rear plates 14 of the frame by fastening members 52a and 62a penetrating through both sides of the fixing plates 12 of the frame. Rope catcher insertion groove is formed in the center of the plate member to be fastened in the vertical direction.

The first and second rope catchers 54 and 64 have catcher bodies 54a and 64a having a rope groove formed at the front end of the plate-shaped member having a substantially hat-shaped side and engaging shafts 54b and 64b coupled to the rear of the body. It is composed of

The first and second release members 56 and 66 may have a shape similar to that of the eccentric cam and protrude outwardly by a centrifugal force to contact the pendulum 30 with a contact portion 56a and 66a. Coupling holes 56c and 66c are drilled so as to extend downward on both sides of the contact portion so as to be rotatably arranged on the front and rear plates of the frame, and the locking portions 59 and 69 to engage the locking shafts 54b and 64b on the inner surface. The side portions 56b and 66b formed with) are integrally formed.

In addition, the locking portions 59 and 69 of the locking grooves are formed such that the locking grooves 59c and 69c are formed at both ends of the locking shafts 54b and 64b on both sides of the inner surface of the side portions 56b and 66b, respectively. Guide protrusions (59a, 69a) is projected on the upper side and the mounting projections (59b, 69b) having a mounting groove on the lower side of the locking groove is projected.

In addition, the first and second external force applying members 58 and 68 may have a first spring base having one end rotatably coupled to the shaft 70 rolled on the front and rear plates 14 of the frame 10 and having a moving hole in the center thereof. 58a, 68a and " ⊂ " shaped couplings, one end of which is movably inserted into the moving hole of the first spring base, and the other end of which is coupled to the engaging shafts 54b, 64b of the rope catchers 54, 64; Connecting rods 58b and 68b to which 58d and 68d are coupled; second spring bases 58c and 68c coupled to the outer side of the connecting rod; and elastic members provided on connecting rods between the first and second spring bases. (58d, 68d) are included.

The pins fastened to the lower sides of the first and second rope catchers 54 and 64 are stop pins that prevent the rope catcher coupled to the connecting rod from being excessively rotated to the connecting rod.

On the other hand, the main wheel 20 is commonly referred to as governor sheave (Sheave) is formed with a rope groove on the outer peripheral surface of the circular wheel, a plurality of support members are formed across the center and the central axis is coupled to the intersection of the frame It is coupled to the axial coupling groove, the reference numeral 80 in the figure is a connecting rod connected between the pendulum and the pendulum.

Referring to the operation according to the first embodiment configured as described above is as follows.

First, when the platform is driven in the downward direction, as shown in FIGS. 1A, 1B, and 2A, the rope of the governor is moved at the same speed as the platform, and the main wheel 20 in which the rope is wound is rotated. When the platform is lowered above the predetermined speed in the pendulum 30 mounted on the main wheel is operated by the centrifugal force to operate the speed switch 40 to cut off the power of the winch and brake action, in this state again specified speed When the speed is further increased, the pendulum 40 is further spread outward and the tip of the pendulum contacts the contact portion 56a of the first release member 56, thereby rotating the first release member clockwise and simultaneously Since the locking shaft 54b fixed to the locking portion (the locking groove 59c corresponding between the seating protrusion 59b and the guide protrusion 59a) of the release member is released, the first rope catcher 54 is removed. 1 is separated from the release member 56, and becomes free.

The first rope catcher 54 in which the restrained state is released in this way is positioned in the rope catcher insertion groove on the first rope catcher fixing plate 52 while being moved downward by its own weight and the frictional force with the descending rope. Since the first rope catcher 54 is brought into close contact with the first rope catcher fixing plate by the external force applying member 58, the rope moving downwards is tightly sandwiched therebetween, thereby making it possible to make an emergency stop in the downward direction. If the platform continues to descend while the governor rope is fixed, an emergency stop device (not shown) mounted on the platform is operated to stop the platform.

When the first external force applying member 58 applies the external force to the first rope catcher 54 in more detail, the first rod catcher 54 descends while the connecting rod 58b coupled thereto is the first. The connecting rod is moved to the spring base 58a, and thus the elastic member 58d of the compression spring is contracted so that the elastic force is applied to the connecting rod 58b including the second spring base 58c. The pressing force is applied to the rope catcher 54 to clamp the rope.

On the contrary, when the platform is driven in the upward direction, as shown in FIG. 2B, the main wheel 20 in which the rope is wound is rotated clockwise. In this state, the platform is mounted on the main wheel 20 when the platform is raised above a predetermined speed. When the pendulum 30 is operated by the centrifugal force, the speed switch 40 is operated to cut off the power of the winch and brake, and in this state, the pendulum 40 is further outward when speeded higher than the designated speed. While the tip of the pendulum is in contact with the contact portion 66a of the second release member 66, the second release member 66 is rotated counterclockwise, and at the same time the locking portion of the second release member Since the locking shaft 64b fixed to the locking groove 69c corresponding to the space between the 69b and the guide protrusion 69a is separated, the second rope catcher 64 is separated from the second release member 66 and freed. It becomes a state.

The second rope catcher 64 in which the restrained state is released in this way is positioned in the rope catcher insertion groove on the second rope catcher fixing plate 62 while being moved downward by its own weight and the frictional force with the descending rope. Since the second rope catcher 64 is brought into close contact with the second rope catcher fixing plate 62 by the external force applying member 68, the rope moving downwards is tightly sandwiched therebetween, thereby making it possible to make an emergency stop in the upward direction. In this way, when the platform continues to move up in the state where the governor rope is fixed, an emergency stop device (not shown) mounted on the platform is operated to stop the platform.

On the other hand, the accompanying drawings, Figure 3a is a view showing the governor of the lifting-type conveying head according to a second embodiment of the present invention, Figure 3b is an enlarged exploded perspective view of the portion B of Figure 3a, Figure 4a is a second embodiment of the present invention A first use state diagram for explaining the use state of the governor of the lifting carriage head according to the present invention, Figure 4b is a second use state diagram for explaining the use state of the governor of the lifting carriage head according to the second embodiment of the present invention Parts that are not important in the description of the present invention are partially omitted, and the same parts as in the first embodiment will be described with the same reference numerals.

The governor of the liftable transporter according to the second embodiment of the present invention has a frame 10 installed in a machine room or the like, as shown in FIGS. 3A, 3B, and 4, and a circular shape rotatably installed on the frame. When the main wheel 20, the plurality of pendulums 30 installed on the main wheels, and the pendulum 30 protrude outwards by centrifugal force, they come into contact with each other to cut off the power of the winch and to operate the brake of the winch The pair of speed switches 40 installed on the frame corresponding to the left and right sides of the main wheel 20 to generate a signal, and when the platform is abnormally moved downward, press the rope to restrain the platform to emergency stop. The first rope fixing body 50 formed on one side of the fixed plate 12 and, if the platform is moved upwards abnormally constrains the rope to move upwards so that the platform is emergency stop. In the structure provided with a second rope fixing body 60 is configured on the other side of the fixed plate, the detection unit for detecting the departure of the designated area of the platform in the up and down direction when the door of the platform is open When the signal is applied, the plunger 92 sucked in the magnetized state while the power is cut off protrudes by the elastic force of the elastic member 94 coupled thereto to contact the pendulum 30 of the main wheel 20. It is further configured to further include a solenoid 90, which is mounted on the second release members 56 and 66, and is constrained to move upwards and downwards, thereby driving the platform to emergency stop.

In addition, the plunger 92 of the solenoid 90 is configured to be in contact with the pendulum 30 that is opened to the outside by centrifugal force to implement an emergency stop operation, preferably, the plunger 92 of the solenoid 90 A plurality of pin members 100 are formed to protrude from the front and rear outer periphery of the main wheel at regular intervals so that the emergency stop operation according to the forward movement can be made quickly.

The operation according to the second embodiment of the present invention configured as described above is as follows.

As shown in Figures 3a, 3b and 4, when the platform is speeding in the lowering direction, as shown in the operation description of the first embodiment described above, the main wheel 20, the pendulum 30, the first release member 56, The emergency stop is made possible by the operation made by the first rope catcher 54, etc. On the contrary, when the platform is speeded in the ascending direction, the emergency stop is made possible by the same operation as in the above-described operation of the first embodiment. It is possible to prevent the platform from moving in the up and down direction in the elevator door is opened, this operation will be described with reference to FIG.

First, as shown in FIG. 4A, when the platform leaves the designated area downward in a state in which the door is opened, departure of the platform is detected by the detection unit, and the detection signal is transmitted to the solenoid 90 to cut off power. That is, since the power is cut off to the solenoid 90 in which the plunger 92 is sucked in the magnetized state, the plunger 92 protrudes to the outside by the elastic force of the elastic member 94. At this time, since the end of the plunger 92 is in contact with the pendulum 30 or the pin member 100 protruding to the outside, the rotational force is applied to the solenoid 90 by an external force (rotation force) transmitted by the pendulum or the pin member. Accordingly, the first release member 56 coupled with the solenoid is rotated.

As described above, when the first release member 56 is rotated, the first rope catcher 54 fixed to the first release member is separated and moved downward by the frictional force of the rope moved downward and at the same time. As described in the operation of the first embodiment, the first rope force catcher 54 is in close contact with the first rope catcher fixing plate 52 by the first external force applying member 58, thereby blocking and restraining the movement of the rope. Movement to the state is prevented.

On the contrary, as shown in FIG. 4B, even when the platform leaves the designated area upward while the door is opened, the departure of the platform is sensed by the detector and the detection signal is transmitted to the solenoid 90 so that the power is cut off. That is, since the power is cut off to the solenoid 90 in which the plunger 92 is sucked in the magnetized state, the plunger 92 protrudes to the outside by the elastic force of the elastic member 94. At this time, since the end of the plunger is in contact with the pendulum 30 or the pin member 100 protruding to the outside, the rotational force is applied to the solenoid by an external force transmitted by the pendulum or the pin member, and thus the second release member to which the solenoid is coupled. Reference numeral 66 is rotated counterclockwise.

When the second release member 66 is rotated as described above, the second rope catcher 64 fixed to the second release member is separated and moved downward by its own weight and frictional force of the rope moved downward. As described in the operation of the first embodiment, the second rope catcher 64 is in close contact with the second rope catcher fixing plate 62 by the second external force applying member 68, thereby blocking and restraining the movement of the rope. Movement to the state is prevented.

According to the governor of the lifting type conveying head according to the present invention as described above, not only when the platform is freely falling in the downward direction or overspeeding in the downward direction due to the cutting of the rope, but also the platform is defined in the upward direction. If the overspeed is exceeded, the governor is not only operated, but the platform is opened in the up and down direction of the platform when the door of the platform is opened due to the brake of the elevator hoist, the rope slipping on the pulley of the hoist, or the safety circuit. Since the governor operates even when it moves, it is possible to make an emergency stop. Therefore, it is a very useful invention to improve safety, such as preventing accidents in advance.

Claims (4)

In the governor is installed to restrain the rope when the platform of the vehicle moving in the vertical direction is abnormally lifted, A frame including a fixed plate having a rope hole formed on the left and right sides of the rope, and a front plate and a rear plate formed to have a storage space inside the front and rear portions of the fixed plate; A circular main wheel coupled to the front and rear plates of the frame to be rotatably installed; A plurality of pendulums provided on the main wheels to be opened outwards by centrifugal force when the main wheels are speeded over a predetermined speed; A pair of speed switches installed on a frame corresponding to the left and right sides of the main wheel so that when the pendulum protrudes outward by centrifugal force, the pendulum contacts and cuts off the power of the winch machine; A first rope catcher fixing plate installed on a fixing plate in contact with a rope hole on one side of the frame, a first rope catcher installed on a surface opposite to the first rope catcher fixing plate and provided with a locking shaft, and having a locking shaft; 1, a locking portion is formed to support the locking shaft is formed so that the rope catcher is positioned and fixed to the upper side of the first rope catcher fixing plate, and when the pendulum protrudes outward by centrifugal force in the downward speed of the main wheel, it contacts and rotates The first release member rotatably coupled to the frame to release the restraint of the first rope catcher, which is fixed by the first rope catcher, and the first rope catcher which is released downward by the restraining force by the operation of the first release member. The first external force is applied so that the rope which is moved downward is clamped by applying a pressing force to bring it into close contact with the first rope catcher fixing plate. A first rope fixing body configured of the member; A second rope catcher fixing plate installed on a fixing plate in contact with the other rope hole of the frame opposite to the first rope fixing body, and installed on the surface opposite to the second rope catcher fixing plate so as to be movable; When the second rope catcher and the second rope catcher is located on the upper side of the second rope catcher fixing plate is formed a locking portion for supporting the locking shaft and the pendulum protrudes outwards by centrifugal force in the upward speed of the main wheel The second release member is rotatably coupled to the frame so that the restraint of the second rope catcher, which is fixed by the engaging portion while being rotated in contact with the second release member, is released downward by the operation of the second release member. A rope moved downward is pinched by applying a pressing force to the moved second rope catcher so as to be in close contact with the second rope catcher fixing plate. A governor of a liftable conveying head, comprising a second rope fixing body configured to have a second external force applying member configured to be fixed. The method of claim 1, If the detection signal is applied from the sensing unit that detects the departure from the designated area of the platform in the state where the door of the platform is open, the plunger sucked in the magnetized state is coupled to the elasticity. And a solenoid which is mounted on the first and second release members to protrude by the elastic force of the member to contact the pendulum of the main wheel, and is constrained to move the up and down direction, thereby driving the platform to emergency stop. Governor of lifting carrier head. The method of claim 2, A governor of a liftable conveying head, wherein a plurality of pin members contacting the plunger at predetermined intervals protrude from the front and rear outer circumferences of the main wheel so that the emergency stop operation according to the forward movement of the plunger of the solenoid is performed quickly. . The method according to any one of claims 1 to 3, The first and second external force applying members may include: a first spring base having one end rotatably coupled to a shaft rolled on the front and rear plates of the frame and having a moving hole formed at the center thereof; A connecting rod having one end coupled to the moving hole of the first spring base and coupled with a connector having a “⊂” shape coupled to the locking shaft of the rope catcher at the other end; A second spring base coupled to an outer side of the connecting rod; The governor of the liftable conveying head, characterized in that it comprises an elastic member installed on the connecting rod between the first and second spring base.