KR100468092B1 - Governor of elevator - Google Patents

Abstract

The present invention not only enables emergency stop when speeding in the up and down direction of the platform, but also makes it possible to make an emergency stop even when the platform door has been opened in the up and down direction based on the platform in the state where the platform door is opened. It relates to a governor of an elevator to improve the safety of the cargo.

The governor of such an elevator is a rope which is rotatably installed on the frame by the central axis and is operated to restrain the rope wound on the main wheel by the motion of a plurality of pendulums when the main wheel is speeded over a predetermined speed. The stationary body is arranged and installed on one side, and a trip lever installed on the main wheel to operate in contact with the pendulum moved outward by centrifugal force, a pawl coupled to and coupled with the trip lever, and when engaged with the pawl, In the governor structure having a ratchet coupled to the main wheel and the end of the link is engaged so that the rope fixing body is activated when the rotation is interlocked with the main wheel, the ratchet 160 is composed of a single structure The fixed point position between the link and the ratchet is that when the ratchet is rotated forward and backward, the link of the specified length is always pulled regardless of the direction of rotation. Is coupled to a position having the shortest distance to the combined ratchet fixed points in the steady state information that is configured to be an emergency stop, regardless of the rotating direction, and the lifting members (220) projecting form to each of the pendulum; A driving means 240 coupled to one side of the frame corresponding to the lifting member and provided with a locking member 230 which is selectively moved forward and backward to contact the lifting member; When the platform door is opened and the designated area of the platform deviates in the up and down direction, it detects this and applies the detection signal to the control unit so that power is cut off to the driving means through the control unit so that the locking member can move forward. The sensing unit is configured.

Description

Governor of elevator {GOVERNOR OF ELEVATOR}

The present invention relates to an elevator governor, and more particularly, an elevator installed in a machine room of an elevator to operate when the platform is abnormally speeded so that the platform can be emergencyly stopped so that safety accidents such as falling of passengers and cargoes are prevented in advance. Is about the governor.

In general, elevators are installed not only when the rope is broken, but also when there is an abnormality and the platform is lowered abnormally quickly, a governor is installed to prevent this. And the governor is normally installed in the machine room and the governor rope (hereinafter referred to as "rope") connected to the platform is wound on the governor main wheel to rotate the main wheel, and when the speed of the platform is abnormally raised, the pendulum of the governor main wheel is moved by the centrifugal force. Side of the lifter stops the motor power of the hoisting machine by operating the speed switch, and at the same time, the platform is stopped by operating the brake of the hoisting machine.

On the other hand, when the winch brake breaks 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 opens again and the rope catcher is pulled to pull the rope catcher. Is fixed so that the emergency stop device attached to the elevator can be operated. That is, such a governor is installed to prevent the platform from falling down due to free fall in the downward direction or the speed exceeding the speed specified in the downward direction due to the cutting of the rope.

However, the conventional governor is operated only when the platform is dropped and drastically accelerated in the downward direction as described above. Therefore, a separate safety device is not provided except for the operation of switching off the main power during the upward speed. Therefore, a problem arises in the safety of passengers during a sudden rise, and when the platform moves up and down with the door open at the platform due to an abnormality in the brake of the elevator hoist, a rope slip in the pulley of the hoist, or a safety circuit. There was a problem that causes the safety accident because there is no function to stop the platform.

In addition, the conventional governor has a large number of components, an increase in the number of assembly and production costs, thereby reducing productivity and difficult maintenance.

The present invention is to solve the above problems, the purpose is to not only make the emergency stop when the platform is speeding in the downward direction, but also to prevent the platform is elevated even when the platform is speeding upwards passengers or cargo To improve the safety of the elevator to provide a governor.

Another object of the present invention is to provide an elevator governor so that the safety of passengers or cargo can be improved by making it possible to make an emergency stop even if the platform door is opened in the up and down direction based on the platform in an open state. .

Another object of the present invention is to provide a governor of an elevator having a simple structure and easy productivity and maintenance.

In order to achieve this object, the present invention restrains the rope wound around the main wheel by the motion of a plurality of pendulums when the main wheel is rotatably installed by the central axis on the frame and the main wheel is speeded over a predetermined speed. And a triple installed on the main wheel so as to be in contact with the pendulum moved outwardly by centrifugal force, and a pawl coupled to be connected to and interlocked with the triple lever. In the governor structure is provided with a ratchet coupled to the pawl and the ratchet is coupled to the main wheel and the end of the link is engaged so that the rope fixing body is activated when the rotation is interlocked with the main wheel, the ratchet is composed of a single structure When the position of the fixed point between the link and the ratchet is the ratchet forward and reverse rotation, the link of the predetermined length is always Is coupled to be coupled with the shortest distance to the ratchet fixed points in the steady state position information that is configured to be an emergency stop, regardless of the rotating direction, the lifting member is formed projecting on each of the pendulum and; Drive means coupled to one side of the frame corresponding to the lifting member and provided with a engaging member that is forward and backward to contact with the lifting member; When the platform door is opened, the designated area of the platform is moved upward and downward in the up and down direction, and the detection signal is applied to the control unit so that power is cut off to the driving means through the control unit so that the locking member moves forward. Characterized in that it comprises a detection unit.

In addition, the driving means is composed of a solenoid is coupled to the end of the plunger support member protruding the engaging member at both ends orthogonally while the solenoid is formed in a substantially "∪" shape guide coupled to the frame of the governor Mounted on the outer side of the member is configured to reciprocate the plunger including the support member inside the guide member.

Preferably, the lifting member includes a fastening member inserted into and fastened to a fastening groove formed in a recess through an outer surface of the pendulum; It is composed of a lifting plate coupled to the outer end of the fastening member.

On the other hand, the pole is composed of a first pole and a second pole symmetrically installed on the left and right sides on the same axis, and the first pole and the second pole is installed on the main wheel is connected to a pair of elastic members are applied to the tension force On the other hand, the first pole and the second pole is characterized in that the locking jaw is formed on the upper side is operated to be released or locked to the ratchet by a single trip lever that is locked or released on the locking jaw.

Preferably, the ratchet is characterized in that the protruding in an arc shape so as to have a predetermined interval on the outer periphery of the disc-shaped body so that the poles are fitted in both rotational direction and the teeth are formed at both ends thereof.

1A is a front perspective view showing a governor of an elevator according to a preferred embodiment of the present invention;

Figure 1b is a rear perspective view showing the governor of the elevator according to a preferred embodiment of the present invention,

2A is a schematic front cross-sectional view of FIG. 1;

2b is a schematic plan sectional view of FIG. 1;

2C is a schematic side cross-sectional view of FIG. 1;

3 is a view for explaining the action of the overspeed in the down direction of the governor of the elevator according to an embodiment of the present invention,

4 is a view for explaining the action of the overspeed of the speed governor of the elevator according to a preferred embodiment of the present invention,

Figure 5a is a schematic front view for explaining the operation of the gate in the down direction of the elevator governor according to a preferred embodiment of the present invention,

Figure 5b is a schematic rear view for explaining the action of the gate in the down direction of the governor of the elevator according to a preferred embodiment of the present invention,

Figure 6a is a schematic front view for explaining the operation of the elevator in the rising direction of the governor of the elevator according to a preferred embodiment of the present invention,

Figure 6b is a schematic rear view for explaining the action of the elevator in the rising direction of the governor of the elevator according to a preferred embodiment of the present invention.

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

110: a frame, 120: a ring,

130: pendulum, 140: trip lever,

150: Paul, 160: ratchet,

170: fixed rope, 210: speed switch,

220: lifting member, 230: locking member,

240: driving means, 250: support member,

260: a guide member.

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

Figure 1a is a front perspective view showing a governor of the elevator according to a preferred embodiment of the present invention, Figure 1b is a rear perspective view showing a governor of the elevator according to a preferred embodiment of the present invention, Figure 2a is a schematic FIG. 2B is a schematic cross-sectional view of FIG. 1, FIG. 2C is a schematic side cross-sectional view of FIG. 1, and parts not important in the description of the present invention are omitted.

The governor of the elevator according to the present invention has a substantially rectangular parallelepiped shape as shown in FIGS. 1 to 6, and is rotatably rotated by a frame 110 formed on both sides thereof and a central axis 122 coupled to the frame. The main wheel 120 is installed, the plurality of pendulums 130 (Flyweight) is formed by the centrifugal force when the main wheel is speeded over a predetermined speed and moved to the outside by the centrifugal force acting at the speed of the main wheel Trip lever 140 is installed to one side of the main wheel to operate in contact with the pendulum 130 to be operated, and a pawl rotatably coupled to the main wheel 120 to be rotated in connection with the trip lever 140. 150 and Pawl, and when engaged with the pawl 150 in a state in which it is pivotally installed on one side central axis of the main wheel, the rotation is constrained and the ratchet 160 and the ratchet 160 interlocked with the main wheel. Work Rope catcher 178 including a shoe on the other side of the link 172 to which the end is connected is rotatably coupled to the frame 110, the external force applying member for applying an external force to the rope catcher 178 to the outside Rope fixing body (176) is configured and, by the action of the pendulum 130, which is caused by the centrifugal force when the platform is abnormally speeded to cut off the electric power of the winch (not shown) and at the same time the brake of the winch The speed switch 210 for operating the is configured.

Referring to each component configured as described above in more detail, as shown in Figure 1, the frame 110 has a substantially "C" shape on the side shape and is formed in a rectangular shape on the front top of each of the above A shaft coupling groove is formed is coupled to the central shaft 122 is fitted.

The main wheel 120, generally called a governor sheave, has a rope groove formed on an outer circumferential surface of a circular wheel, and a plurality of support members are formed across the center thereof, and a central axis is coupled to an intersection thereof to couple the shaft of the frame. Is coupled to the groove.

The pole 150 is composed of a first pole 152 and a second pole 154 symmetrically installed in the left and right on the same axis, and the first pole and the second pole is installed on the main wheel as long as the tensile force is applied While the pair of elastic members 158 are connected and installed, the first pole 152 and the second pole 154 have a locking jaw 156 formed on an upper side thereof, so that the single trip lever is caught or released on the locking jaw. By 140, the ratchet 160 is selectively released or locked according to the operation of the governor (when the downward direction overspeed, the downward direction opening start, the upward direction overspeed, and the upward direction opening and departure). .

The ratchet 160 (Ratchet) is a hole formed in the central axis of the approximately disk-shaped body hole is drilled into the outer edge of the ratchet pin is inserted into the link hole drilled in the link 172, in particular The shape is protruding in an arc shape so as to have a predetermined interval on the outer periphery of the disc-shaped body so that the pole is fitted in both rotational direction and the teeth are formed on both ends thereof.

In particular, the ratchet 160 is configured in a single structure and the fixed point position between the link 172 and the ratchet is coupled to the position that the link is always pulled regardless of the direction of rotation when the ratchet is forward, reverse rotation The emergency stop is possible regardless of the reverse rotation direction. As shown in FIG. 2A, the link 172 having a predetermined length is connected to the fixed point of the ratchet 160 in a normal state (not pulled). When the ratchet is rotated regardless of the forward or reverse direction as the position having the shortest coupling distance, the link 172 is coupled to the pulled position. In the accompanying drawings, it is located between 1 o'clock and 3 o'clock in the clockwise direction.

The rope fixing body 170 is coupled to the lower end by a hinge pin (178a) on one side edge of the frame 110, the incision groove is formed in the center and the external force applying member installed in one side of the installation hole perforated A rope including a fixed plate 174 having an eccentric protruding portion, an external force applying member 176 installed in an external force applying member mounting portion of the fixing plate, and a shoe pin pinched in a cutout groove of the fixing plate 174. It is composed of a catcher 178, the external force applying member 176 is inserted into the rear portion of the link 172 is inserted into the installation hole elastic member 176a, the front end is installed in contact with the fixing plate 174, the elastic The rear end of the member is made of a washer and a nut 176b fastened to the rear end of the link such that the rear end of the member is contacted and supported.

Lifting member 220 protrudes from each pendulum 130 of the governor so as to protrude outward as shown in FIGS. 2A and 2B, and selectively on one side of frame 110 corresponding to the lifting member 220. When the driving means 240 is provided with a locking member 230 that is moved forward and backward to contact with the lifting member 220 while the door of the platform is open, it moves out of the designated area of the platform in the upward and downward directions. Sensing unit (not shown, conventional lifting platform) to detect and apply the detection signal to the control unit to cut the power to the driving means 240 by the control signal generated by the control unit to move the locking member 230 forward And installed on the side of the platform).

In addition, the lifting member 220 is a fastening member 222 that is inserted into and fastened to the fastening groove 132 formed through the outer surface of the pendulum 130, and a lifting plate coupled to the outer end of the fastening member 222. On the other hand, the fastening member 222 is composed of a screw and a pair of nuts fastened and fixed to the upper and lower ends thereof, and the lifting plate is formed in a substantially disk shape and is eccentrically coupled to the upper end of the screw.

The driving means 240 is composed of a solenoid in which the plunger is sucked in the state in which the plunger 242 is interposed with the plunger 242 and the power is applied and the plunger protrudes in the state where the power is cut off. The support member 250 is installed at an end of the end portion 242 to be perpendicular to each other, and the engaging member 230 is coupled to protrude inwardly at both edges thereof, while the engaging member 230 is formed of a round bar-shaped pin. The distribution hole 232 is drilled on the frame 110 corresponding to the locking member so that the locking member 230 may be moved forward and backward.

The solenoid is formed on the outer surface of the guide member 260 coupled to the frame 110 of the governor in a substantially "c" shape, and the reciprocating movement of the plunger for moving the locking member 230 is made outside the frame. Being configured to be, the outer surface of the guide member 260 is perforated with a flow hole 262 in communication with the flow hole 232 side of the frame 110 side.

Unexplained reference numeral 134 of FIG. 1B is a connecting table for allowing the pendulum 130 to operate in conjunction with each other.

Referring to the operation of the present invention configured as described above are as follows.

Figure 3 is a view for explaining the action of the speed governor in the down direction of the elevator according to a preferred embodiment of the present invention, Figure 4 is an overspeed of the speed governor of the elevator according to a preferred embodiment of the present invention Figure 5a for explaining the operation, Figure 5a is a schematic front view for explaining the operation of the elevator governor in the downward direction opening and closing of the elevator according to a preferred embodiment of the present invention, Figure 5b is an elevator according to a preferred embodiment of the present invention Figure 6a is a schematic rear view for explaining the action of the governor in the down-direction opening and closing of the speed governor of the elevator according to a preferred embodiment of the present invention, Figure 6a Figure 6b is a schematic for explaining the operation of the elevator in the ascending direction of the governor of the elevator according to a preferred embodiment of the present invention It is a rear view, a part that is not critical to the description of the invention is shown partially omitted.

First, when the platform is driven in the downward direction, as shown in FIG. 3, the rope of the governor is moved at the same speed as the platform, and thus the main wheel 120 in which the rope is wound is rotated. In this state, the platform is above a predetermined speed. When descending to the pendulum 130 mounted on the main wheel is operated by the centrifugal force to operate the speed switch 210 to cut off the power of the winch and brake action, in this state again if the speed is higher than the specified speed pendulum 130 is operated by the trip lever 140 and the linkage is released by the restraint of the pawl 150 fixed to the trip lever and pulled by the tension of the elastic member 158, the tip of the ratchet (160) ) Is meshed with the tooth.

Accordingly, the ratchet 160 is constrained to the main wheel 120. When the main wheel 120 is rotated (counterclockwise in FIG. 3), the ratchet is also rotated in the same direction, so that the link fixed to the ratchet pin of the ratchet 160 is rotated. 172 is pulled, the link 172 is pulled in this way by pulling the fixing plate 174, the rope catcher 178 coupled to the fixing plate is in close contact with the rope to block the restraint of the movement of the rope so that the emergency in the downward direction When the stopper can be stopped, and the platform continues to descend in the state where the governor rope is fixed, the emergency stop device (not shown) mounted on the platform is operated to stop the platform.

On the contrary, when the platform is driven in the upward direction, as shown in FIG. 4, the main wheel 120 in which the rope is wound is rotated in the clockwise direction. When the platform is lowered above the predetermined speed in this state, the platform is mounted on the main wheel 120. The pendulum 130 is operated by the centrifugal force to operate the speed switch 210 to cut off the power supply of the winch and brake action. In this state, the pendulum 130 is tripped at a speed higher than the specified speed again. 140 is operated and the pole 150 is operated in conjunction with the tip is engaged with the teeth of the ratchet 160.

Accordingly, when the ratchet 160 is constrained to the main wheel 120 and the main wheel rotates (clockwise in FIG. 4), the ratchet is also rotated in the same direction, so that the link 172 fixed to the ratchet pin of the ratchet 160 is pulled out. As the link is pulled in this way, the rope catcher 178 coupled to the fixed plate 174 is pulled by the fixed plate 174 to closely contact the rope to block and restrict the movement of the rope so that the emergency stop in the upward direction is possible.

As described above, the operation of the speed governor in the downward direction and the upward direction of the governor according to the present invention was described. Hereinafter, the operation of the platform in the state where the platform door is opened (when the door is opened) will be described. .

First, when the platform is out of the designated area in the state of the door open, the departure of the platform is detected by the detection unit and the detection signal is transmitted to the solenoid which is the driving means 240 through the control unit, the power is cut off. That is, since the power is cut off to the solenoid in which the plunger 242 is attracted in the magnetized state, the plunger 242 protrudes to the outside by the elastic force of the elastic member 244, so the locking member 230 including the support member 250 is provided. Is moved forward.

Accordingly, the engaging member 250 which is moved forward is engaged with the lifting plate 224 of the lifting member 220 coupled to the pendulum 130 as shown in FIGS. 2C and 2B, and the platform is lowered in this state. 5a and 5b, the main wheel 120 is rotated clockwise (counterclockwise in FIG. 5a) by a rope moved clockwise (counterclockwise in FIG. 5a) as shown in FIGS. 5a and 5b. The lifting member 220 installed in the pendulum is lifted by the locking member 230 and eventually opens the pendulum 130 (that is, performs the same function as the pendulum opening by centrifugal force due to the overspeed of the main wheel). It is carried out to operate the trip lever 140 and interlocked with the pole 150 is operated so that the tip is engaged with the teeth of the ratchet 160, the ratchet 160 is constrained to the main wheel 120.

Therefore, when the main wheel 120 is rotated, the ratchet is also rotated in the same direction, so that the link 172 fixed to the ratchet pin of the ratchet 160 is pulled as shown in FIG. 5A, and the link 172 is pulled as described above. By pulling the fixing plate 174, the rope catcher 178 coupled to the fixing plate is in close contact with the rope to block and restrict the movement of the rope so that the emergency stop in the downward direction is possible in the state where the platform door is open.

On the contrary, when the platform leaves the designated area upward while the door is opened, the departure of the platform is detected by the detection unit, and the detection signal is transmitted to the solenoid which is the driving means 240 through the control unit so that the power is cut off. That is, since the power is cut off to the solenoid in which the plunger 242 is sucked in the magnetized state, the plunger 242 protrudes to the outside by the elastic force of the elastic member 244, so the locking member 230 including the support member 250 is included. ) Moves forward.

Accordingly, the engaging member 230 which is moved forward is engaged with the lifting plate 224 of the lifting member 220 coupled to the pendulum 130 as shown in FIGS. 2C and 6B, and the platform is raised in such a state. If the main wheel 120 is rotated counterclockwise (clockwise in Figure 6a) by a rope moved in a counterclockwise direction (clockwise in Figure 6a) when moved in the direction (lifting member of the pendulum 130 installed therein ( 220 is lifted by the catching member 230, and eventually serves to open the pendulum to operate the trip lever, and in conjunction with the pole is operated as the tip is engaged with the teeth of the ratchet, the ratchet is in the main wheel Is constrained.

Therefore, when the main wheel is rotated, the ratchet is also rotated in the same direction, so that the link fixed to the ratchet pin of the ratchet 160 is pulled, and the pulled link pulls the fixing plate so that the rope catcher 178 coupled to the fixing plate is a rope. As it is in close contact with the movement of the rope blocking the restraint it is possible to emergency stop in the ascending direction in the lift platform door open state.

According to the governor of the elevator according to the present invention as described above, not only when the platform is freely falling in the downward direction or overspeeding above the speed specified in the downward direction due to cutting of the rope, but also the platform is above the speed defined in the upward direction. When the speed is increased, the governor is operated so that the mechanical safety of the elevator is improved, and the platform is opened up and down with the door open at the platform due to the brake break of the elevator hoist, the rope slipping on the pulley of the hoist, or the safety circuit. Even if it moves, it is a very useful invention that ensures the safety of passengers and cargoes because the governor is enabled to make an emergency stop.

In addition, even with a single ratchet, a rope fixing body, and a trip lever, the structure is simple and can be made to make emergency stop when overspeed in descending direction, at opening direction in descending direction, at speeding in ascending direction, and at opening direction in ascending direction. It is a very useful invention that can realize a governor that can reduce costs, improve productivity, and maintain maintenance.

Claims (5)

When the main wheel is rotatably installed by the central axis on the frame and the main wheel is overspeed over a predetermined speed, the rope fixing body is operated on one side to restrain the rope wound on the main wheel by a plurality of pendulum motions. A trip lever installed on the main wheel to operate in contact with the pendulum moved outward by centrifugal force, a pawl coupled to the trip lever in connection with the trip lever, and when engaged with the pawl, the rotation is constrained to interlock with the main wheel. It is installed so that the end of the link is coupled so that the rope fixing body is activated when the interlocking rotation to the main wheel, and when the platform door is opened in the up and down direction of the landing area is detected and detects the detection signal And a sensing unit installed to apply the control unit to the controller, and according to a control signal of the controller generated by the sensing signal of the sensing unit. In the governor structure in which the plunger is provided with a driving means composed of a solenoid that is moved forward by the elastic force when the power is cut off, and when the platform door is opened, the emergency stop is to be made when it is out of the designated area in the vertical direction based on the platform. The ratchet is composed of a single structure protruding in the shape of an arc so as to have a predetermined interval on the outer periphery of the disc-shaped body so that the pole is fitted in both rotational direction, the teeth are formed at both ends thereof, The fixed point position of the link and the ratchet is coupled to the position having the shortest coupling distance with the ratchet fixed point in the normal state such that when the ratchet is rotated forward and reverse, the link of a predetermined length is always pulled regardless of the direction of rotation. It is configured to enable emergency stop regardless of reverse rotation direction. The pole is composed of a first pole and a second pole symmetrically installed on the same axis in the left and right, and the first pole and the second pole is installed on the main wheel is a pair of elastic members connected to the tension force is installed and The first pole and the second pole are operated to be released or locked to the ratchet by a single trip lever which has a locking jaw formed at an upper side thereof and is caught or released on the locking jaw. The solenoid is coupled to the side of the governor frame and mounted on the outer surface of the guide member having a "c" cross-sectional shape, the support member is coupled to the end of the plunger protruding from the guide member is installed inside the guide member , The elevator governor, characterized in that the lifting member is formed by coupling the lifting plate in contact with the locking member to the end of the fastening member fastened to the outer surface of the pendulum so that the pendulum is opened to the outside when the locking member is advanced. delete delete delete delete