KR100663095B1 - Governor for an elevator with two-way braking function - Google Patents

Abstract

The present invention relates to a governor, for which, the governor unit, a transfer hole formed in the upper plate, a limit bar mounted on the pendulum to be reciprocated to the left and right through the transfer hole, and the transfer hole A limit switch mounted at one side; It comprises a tension adjusting means for adjusting the tension of the spring mounted to the pendulum in a tensioned state, the vibration damping unit, the adjustment hole formed in the upper support plate, and the end of the support plate and the center of the lower rope pulley respectively It is possible to be mounted, but characterized in that it comprises a lever plate which is mounted on one end of the weight member, and a link plate mounted between the adjustment hole and the lever plate.

According to the above configuration, since the strike of the limit switch is primarily carried out through the seesaw motion of the pendulum, it is effective to strike the limit switch more accurately and reliably. By fixing the weight member, weight and size of the weight member can be drastically reduced. The end of the link plate can be moved within the adjusting hole to move the lower rope pulley downward so that the tension of the rope can be more easily maintained. There is also an effect.

Elevator, governor, limit switch, spring, weight member

Description

Governor for an elevator with two-way braking function}

1 is a perspective view showing a governor of the governor according to the prior art,

FIG. 2 is a cross-sectional view of FIG. 1 viewed from the back;

Figure 3a, 3b is a cross-sectional view showing the operating state of FIG.

Figure 4 is a front view showing a vibration preventing device of the governor according to another prior art,

Figure 5 is a schematic diagram showing the overall two-way governor for the elevator according to the present invention,

6a, 6b is a front view showing a state in which the limit switch is operated according to the present invention,

7a, 7b is a front view showing the operating state of the tension control means according to the invention,

8 is a side cross-sectional view showing a governor unit according to the present invention;

Figure 9a, 9b is a front view showing a vibration preventing device portion of the lower governor according to the invention,

Figure 10 is a plan view showing a vibration preventing device portion of the lower governor according to the present invention.

* Description of Major Symbols in Drawings *

100: emergency stop device 200: governor device

210: front plate 212: mounting hole

215: feed hole 220: rear plate

240: roller rail 250: upper rope pulley

260: pendulum 265: limit bar

270: spring 280: limit switch

285: limit lever 290: tension guide plate

292: pinhole 300: vibration damping unit

310: support plate 315: adjustment hole

316: uneven portion 320: lever plate

330: link plate 350: lower rope pulley

B: Bolt G: Guide Rail

P: Fixed pin R: Rope

W: weight member

The present invention relates to a governor, and more particularly, to a two-way governor for an elevator, which is capable of hitting the limit switch more accurately and at the same time ensuring the bite of the rope, and significantly reducing the weight of the weight member.

In general, an elevator refers to a device for moving a person or cargo up and down along a pair of guide rails installed inside a vertical passage inside a building, and includes an elevator car, a hoist, an emergency stop device, a governor, and the like.

Briefly, an elevator car on which people and cargo are loaded is lifted by a hoist with a main rope suspended at an upper part thereof, and an emergency stop device is installed at a lower part of the elevator car to rub the guide rail in an emergency to stop the elevator car. do.

In addition, the governor is connected to the emergency stop by a rope, and when the elevator car is abnormally fastened, the governor cuts off the power of the electric motor to operate the brake of the hoist or to operate the emergency stop.

That is, the governor is configured to connect the upper governor unit, the lower vibration prevention unit and the emergency stop by the rope organically, it is possible to quickly and accurately emergency stop the elevator car.

1 to 3b are related to the conventional patent registration No. 10-403119 (name: elevator having a governor and an emergency braking device capable of raising and lowering bidirectional braking), wherein The governor is composed of a main wheel 120, a trip member 130, a pendulum 140, and a trip lever 150.

In more detail, first, the main wheel 120 is rotatably installed on the frame 110 by the central axis 121, and the bidirectional ratchet 122 has a bidirectional ratchet 122 at the center of the main wheel 120. A rectangular roller rail 123 having rounded corners connecting the 122 is provided.

The trip member 130 is located between the main wheel 120 and the one side frame 110, the upper end is hinged to the one side frame 110, the lower portion is to the elastic pin 180 supported on the frame 110 Is supported by elasticity.

Pendulum 140 is provided on the outer lower portion of the main wheel 120, the center portion of the trip member 130 is coupled to the seesaw movement so that the inner side, the guide roller 141 is in contact with the roller rail 123 at one end ) Is mounted, and the other end is formed with a relative ratchet 142 meshing with the bidirectional ratchet 122 when the main wheel 120 is over-rotated.

At this time, the connecting portion 143 is hinged to the lower end of the pendulum 140, the guide cylinder 132 is installed at the end of the trip member 130, the outer side between the connecting portion 143 and the guide cylinder 132 By installing the guide rod 144 having the elastic member 145 installed therein, the pendulum can be elastically supported in a tensioned state.

The trip lever 150 is installed at another lower side of the main wheel 120 to be turned off by the centrifugal force during the over rotation of the main wheel 120 to turn off the first speed switch 160 positioned on the rotation radius thereof.

That is, the conventional governor is penetrated by the pendulum 140 through the guide roller 141 in contact with the roller rail 123 in a tensioned state by the elastic member 145, the rope (R) is caught When the main wheel 120 rotates at an excessive speed, the guide roller 141 is momentarily spaced apart from the roller rail 123 so that the relative ratchet 142 side of the pendulum 140 rapidly rises so that the relative ratchet 142 is bidirectional. It is caught on one side of the ratchet 122.

If the main wheel 120 is overspeed rotated prior to such an operation, the trip lever 150 that has been in the folded state is unfolded by the centrifugal force, and the switch lever 161 of the first speed switch 160 positioned on the rotation radius thereof. ), The power supply of the hoisting motor connected to the first speed switch 160 is cut off. Therefore, by stopping the operation of winding or unwinding the rope of the hoist to operate the emergency stop device of the lower elevator car.

However, the above-described conventional governor is the touch lever of the switch lever is made by the secondary turning action of the trip lever by the centrifugal force, so that the trip lever motor when the trip lever is not unfolded due to the inability and failure of the trip lever. There was a problem that can not operate the emergency stop device can not be stopped.

In addition, the conventional governor has to be used by replacing the elastic member when the elastic member of the role of maintaining the tension state of the pendulum is simply fixed between the tripping member and the connecting portion, the elastic member of the elastic member is weakened or unsuitable for the governor operation. Therefore, there was a problem in that the maintenance cost according to the supply and demand of parts increased.

On the other hand, Figure 4 is a view showing a general vibration preventing device of the governor, the support plate 20 is installed between the guide rail (G) end and the lower rope pulley 10, the lower rope pulley ( 20) Mount the weight member W vertically downward in the center.

That is, the lower rope pulley 10 is limited to the left and right movement by the support plate 20, it is possible to minimize the shaking of the lower rope pulley 10 by the weight member (W) of the weight. .

However, the anti-vibration device may be accurately bitten by the upper rope pulley (main wheel) and the lower rope pulley when the tension is weakened due to long use of the rope or the rope is temporarily lengthened due to temperature and environmental influence. There was no problem that the governor did not operate smoothly.

In addition, since the weight member acting as a weight weight is simply suspended directly below the lower rope pulley, there is a problem that the weight of the weight member must be increased at a ratio of 1: 1 by the weight required for the lower rope pulley. .

In addition, when the elevator car is rapidly lifted to stop the rope in the governor, the anti-vibration device is strongly pulled the lower rope pulley connected to the rope by the inertial force to continuously lift the elevator car, thereby the rope is There was also concern that the rope could pull out of the lower rope pulley.

The present invention has been made to solve the conventional problems as described above, and provides an elevator two-way governor to hit the limit switch more accurately and surely by the essential seesaw movement of the pendulum due to the rotation of the rope pulley There is.

Another object of the present invention is to provide an elevator two-way governor to adjust the tension of the spring according to the tension state of the pendulum so that the seesaw movement of the pendulum can be made more smoothly.

Still another object of the present invention is to provide an elevator bidirectional governor which enables the movement of the lower rope pulley according to the change in the length of the rope and the sudden rise of the elevator car so that the bite action of the rope can be made more accurately. .

Yet another object of the present invention is to provide a two-way governor for an elevator that can significantly reduce the weight and size of the weight member because the weight member is mounted using the principle of lever.

In order to achieve the above object, a configuration of the present invention includes a pulley housing having a bidirectional ratchet and a square roller rail mounted on the upper rope pulley provided between the front and rear plates, respectively, and provided with a bidirectional stopper and a roller, respectively. A pendulum is installed inside the front plate, and the roller is in contact with the rope pulley on the outer side of the roller rail, which is rotated in a tensioned state by contacting and rotating the roller by a spring, so that the rotation of the upper rope pulley is excessive. A bidirectional stopper is instantaneously locked to the bidirectional ratchet to stop the upper rope pulley, and connects the weight member to the lower rope pulley connected by the upper rope pulley and the rope to tension the rope by its weight. At the same time, it consists of a vibration preventing device that prevents vibration and shaking of the lower rope pulley. In the bi-directional governor for an elevator, the device josok unit transfer hole formed in the top and front plate; A limit bar mounted on the pendulum to penetrate the transfer hole and to be reciprocated left and right; A limit switch mounted at one side of the transfer hole to be hit by a limit bar when the pendulum is excessively seesawed; It comprises a tension adjustment step for adjusting the tension of the spring mounted to the pendulum in a tension state, the vibration preventing device portion, the adjustment hole formed in the upper support plate mounted on the guide rail; A lever plate rotatably mounted at an end of the support plate and a center of the lower rope pulley, and having a weight member mounted at one end thereof; And a link plate mounted between the adjustment hole and the lever plate to be movable within the adjustment hole.

When described in detail with reference to the accompanying drawings a preferred embodiment of the present invention.

5 to 10 show the bidirectional governor for the elevator of the present invention, the governor is largely composed of the upper governor 200, and the lower vibration preventing device 300.

First, the governor 200 will be described with reference to FIGS. 5 to 8, which is connected to the hoisting motor and installed inside the machine room, and is connected to the lower vibration preventing device 300 by a rope R. do.

The governor 200 has front and rear plates 210 and 220 installed at the front and rear, respectively, and bidirectional ratchets 232 between the front and rear plates 210 and 220 at front and rear sides. Pulley housing 230 having a rotatable is mounted, the rear of the pulley housing 230 is equipped with a square roller rail of rounded corners, the rear of the roller rail 240 rope (R) The upper rope pulley 250 is installed.

In addition, a pendulum 260 is mounted on the front plate 210, which is mounted on the central portion of the pendulum 260 so that a seesaw movement is possible, and one end of the pendulum 260 is the roller rail 240. The roller 261 which rotates in contact with the outer surface is mounted, and at the other end of the pendulum 260, a bidirectional stopper 262 is locked to the bidirectional ratchet 232.

At this time, the rollers 261 of the pendulum 260 are tensioned by connecting both ends of the spring 270 to adjacent portions of the roller 261 mounted on the pendulum 260 and the inner surface of the front plate 210. It was made to be able to contact the roller rail 240 in the state.

On the other hand, the spring 270 of the role of maintaining the roller 261 of the pendulum 260 in a tensioned state can be adjusted by the tension adjusting means, the tension adjusting means is a tension guide plate 290 And a mounting hole 212, a fixing pin P, and a spring 270.

7A and 7B, a plurality of mounting holes 212 are formed at predetermined intervals on one side of the front plate 210 and rotatably formed in any one of the plurality of mounting holes 212. The tension guide plate 290 is mounted. At this time, one end of the tension guide plate 290 is formed with a plurality of pin holes 292 at regular intervals, the pin hole 292 is different when the tension guide plate 290 is mounted in the mounting hole 212 The mounting hole 212 and the hole is formed to match.

In addition, the tension guide plate 290 is fixed to the front plate 210 by inserting a fixing pin P into the matched mounting hole 212 and the pin hole 292. At this time, by fixing both ends of the spring 270 to the other end of the front plate 210 and a part of the pendulum 260 adjacent to the roller 261, the pendulum 260 in the tension state roller rail 240 Mount in contact with).

Subsequently, the configuration related to the limit switch 280 of the present invention will be described with reference to FIGS. 6A, 6B, and 8, and the feed hole 215 is formed long on the front plate 210 and left and right. The pendulum 260 is provided with a limit bar 265 at a position corresponding to the transfer hole 215, and the limit bar 265 is installed to penetrate the transfer hole 215. In addition, a limit switch 280 having a limit lever 285 protruding from the front plate 210 of one side of the transfer hole 215 is mounted.

That is, when the pendulum 260 is excessively seesawed, the limit bar 265 may be transferred within the transfer hole 215 to strike the limiter 285, thereby stopping the driving of the hoisting motor.

Meanwhile, referring to the accompanying drawings, FIGS. 5 and 9A, 9B, and 10, the vibration damper 300 of the lower part of the governor will be described. The vibration damper 300 may include an upper governor 200 and an elevator car. By maintaining the tension of the rope (R) connected to the lower emergency stop device 100 and to prevent shaking and vibration of the lower rope pulley 350, it is connected to the upper rope pulley 250 by the rope (R). .

The anti-vibration device 300 has a lever plate 320 rotatably mounted before and after the lower rope pulley 350, and a short end portion of the lever plate 320 is supported based on the center of the lower plate. It is mounted to the plate 310, the weight of the weight portion (W) of the weight is fixed to the long end of the lever plate 320 with respect to the center of the lower plate. In addition, the support plate 310 is fixed to one surface of the guide rail (G).

In addition, an adjustment hole 315 is formed at an upper portion of the support plate 310, and a link plate 330 is connected to one surface of the adjustment hole 315 and the lever plate 320. At this time, the inner surface of the adjusting hole 315 is formed with a curved concave-convex portion 316 so that the bolt (B) coupled to the link plate 330 is caught.

Referring to the operation and effect of the present invention configured as described in detail as follows.

Referring to the operation state of the speed governing unit 200 and the vibration damping unit 300 of the two-way governor for the present invention, first, the speed governing unit 200 is the elevator when the elevator car is raised or lowered suddenly Pull the rope (R) caught in the emergency stop device 100 at the bottom of the car to quickly rotate the upper, lower rope pulleys 250, 350 of the speed governing unit 200 and vibration damping unit 300 do.

As such, when the upper rope pulley 250 is rapidly rotated, the upper rope pulley 250 and the fixed pulley housing 230 and the roller rail 240 are also rotated at high speed, and the outer surface of the roller rail 240 is rotated. The roller 261 of the pendulum 260 which rotates in contact with the tension state is bounced off.

Then, the limit bar 265 on the upper side of the pendulum 260 moving in the seesaw motion is reciprocated to a large width left and right in the transfer hole 215 as shown in FIG. 6B, and has a protrusion of the limit switch 280 at a moment exceeding a prescribed speed. The hit limiter 285 is hit. Accordingly, the power of the hoisting motor which is electrically connected to the limiter 285 is cut off to stop the operation of the hoisting machine, thereby stopping the elevator car.

Therefore, the governor 200 of the bidirectional governor for an elevator according to the present invention attaches the limit bar 265 to the pendulum 260 which is moved by the seesaw according to the rotation of the roller rail 240, thereby hitting the limit switch 280. The action can be done more accurately and surely.

That is, the governor described in the prior art is a secondary action of transmitting the centrifugal force according to the rotational action of the main wheel to the trip lever and hitting the lever of the speed switch while the trip lever is unfolded, while the limit switch 280 of the present invention The striking action is a primary striking action through the seesaw motion of the pendulum 260 which is essentially performed according to the rotation of the roller rail 240, and thus a more accurate braking response to the speed can be achieved.

The operation of the governor 200 is a seesaw movement of the pendulum 260 is essential, in order to be the seesaw movement, the pendulum 260 is tensioned by a spring 270 roller rail 240 Mounting in contact with the outer surface is of paramount importance.

The spring 270 that performs such an important operation may be too long or too weak in the tension state of the spring 270 when it is used for a long time or is incorrectly mounted, thereby preventing the accurate impact of the limit switch 280. 7A and 7B, the tension is controlled by adjusting the length of the spring 270.

In more detail, as an example for restoring the tension when the tension of the spring 270 is weakened, as shown in FIG. 7A, the tension guide plate 290 is disposed in the mounting hole 212 farther from the pendulum 260. By installing, it is possible to increase the length of the spring 270 to strengthen the tension.

In addition, as shown in FIG. 7B, the tension pin may be inserted into the mounting hole 212 and the pin hole 292 at the same time to remove the fixing pin P, which serves to control the tension guide plate 290. The length of the spring 270 is increased by rotating the guide plate 290. And, by inserting the fixing pin (P) in the matching hole of the mounting hole 212 and the other pin hole 292, it is possible to be fixed in a state in which the tension of the spring 270 is reinforced.

On the other hand, when the spring 270 is installed, when the tension of the spring 270 is not strong and the governor does not operate smoothly, the length of the spring 270 is reduced to counteract the above action, thereby slightly weakening the tension. It will be able to hit the limit switch 280 more accurately.

On the other hand, the vibration damping unit 300 is connected to the speed governing unit 200, the rope (R) is increased by the temperature, environment and environmental factors, the link plate connected to the support plate 310 as shown in Figure 9b As the bolt B at the end moves downward along the uneven portion 316 in the adjustment hole 315, the lower rope pulley 350 is moved downward by a predetermined length to tension the rope R. do.

As such, the tensioned rope R may be returned to its original state under the influence of temperature. In this case, as shown in FIG. 9A, the bolt B at the end of the link plate 330 may be in the adjustment hole 315. The lower rope pulley 350 is moved upwards by a predetermined length while being moved upward along the uneven portion 316 to tension the rope R.

On the other hand, when the lower loaf pulley 350 is moved downward by a predetermined length, as shown in Figure 5, when the elevator car is rapidly elevated, the upper rope pulley 250 of the governor unit 200 is stopped while the upper rope pulley 250 The rope (R) wound on) is also stopped.

In this way, while the rope R is stopped, the elevator car equipped with the emergency stop device 100 is suddenly lifted, and the emergency stop device 100 and the lower portion are caused by the inertia force caused by the sharp lift of the elevator car. By forcibly pulling the rope (R) connected between the rope pulley (350), a force for lifting the lower rope pulley (350) is applied momentarily.

At this time, the bolt (B) coupled to the link plate 330 as shown in Figure 9b is stopped in the groove of the lower concave-convex portion 316 in the adjustment hole 315, the synergistic action of the lower rope pulley 350 Through the bolt (B) is moved to another groove just above the groove of the concave-convex portion 316 is stopped, the lower rope pulley 350 is no longer moved to the upper or vibrated immediately stops.

Therefore, the vibration damping unit 300 of the bidirectional governor for an elevator of the present invention can prevent the departure of the rope (R) from the lower rope pulley 350 in accordance with the sudden synergism of the elevator car, accordingly By maintaining the tensile force of (R) it is possible to operate the governor more smoothly.

In particular, during the pulling action of the rope (R), the installation of the weight member (W) having a weight is essential to pull the lower rope pulley 350 to the bottom, the weight member (W) of the present invention is the principle of lever It is mounted to the end of the lever plate 320 using.

Here, the principle of the lever described above will be briefly explained. The point supporting the rod among the forces acting on the lever, the point where the force is applied, the point of force, and the point where the force acts on the object. The working point (作用 點) is called the force point, b × f (b is the distance between the force point and the support point, f is the force applied to the force point), the acting point a × w (a is the operating point and the support point) The distance between the two, w is the resistance of the object, i.e. the weight), acts in the opposite direction to the previous one, so the lever is in equilibrium.

That is, the lever plate 320 of the anti-vibration device unit 300 applied to the bidirectional governor for an elevator of the present invention is provided with one side lengthwise based on the lower rope pulley 350 serving as a support point to the weight member (W) at the end. By fixing, it is possible to significantly reduce the weight and size of the weight member (W). Therefore, it is easy to install the weight member W according to the weight and size of the weight member W, and at the same time, it is possible to reduce the material cost according to the weight member W.

On the other hand, the present invention has been described in detail only with respect to the specific examples described above it will be apparent to those skilled in the art that various modifications and variations are possible within the technical scope of the present invention, it is natural that such variations and modifications belong to the appended claims. .

As described above, the present invention is a primary hitting action through the seesaw motion of the pendulum, which is essentially performed according to the rotation of the roller rails, thus hitting the limit switch more accurately and reliably with respect to the rotational speed of the roller rails. It can work.

In addition, by adjusting the tension of the spring to maintain the tension state more easily by changing the position of the tension guide plate, there is also an effect that the impact action of the limit switch according to the seesaw movement of the pendulum in an emergency can be made more accurately.

Furthermore, by having a length of one side of the lever plate on the basis of the lower rope pulley serving as a supporting point to fix the weight member at the end, there is an effect that can significantly reduce the weight and size of the weight member, and thus the weight member At the same time to facilitate the installation work of the weight member will also have the effect of reducing the cost of materials.

In addition, since the bolt of the end of the link plate connecting the lever plate and the support plate is moved up and down in the support hole of the support plate and stopped, the lower rope pulley is moved up and down in accordance with the tension change of the rope. The tension can be more easily maintained, and even when the lower rope pulley rises instantaneously by the above-described action, it is also possible to fundamentally block the rope deviation from the lower rope pulley to operate the governor more smoothly. .

Claims (3)

A pulley housing having a bidirectional ratchet and a square roller rail are respectively mounted on an upper rope pulley provided between the front and rear plates, and a pendulum equipped with a bidirectional stopper and a roller, respectively, is installed inside the front plate, but together with the rope pulley. By contacting and rotating the roller in the tensioned state by the spring on the outer side of the forward and reverse rotating roller rails, the bidirectional stopper is momentarily locked to the bidirectional ratchet by the pendulum seesaw if the upper rope pulley is excessively rotated. A transfer hole formed in the upper portion of the front plate to stop the pulley, a limit bar mounted on the pendulum to be reciprocated left and right through the transfer hole, and hit by the limit bar when the pendulum is excessively seesawed. A limit switch mounted at one side of the transfer hole so that By connecting the weight member to the governor portion comprising a tension adjusting means for controlling the tension by adjusting the length of the spring mounted in the tension to the pendulum, and the upper rope pulley and the lower rope pulley connected by the rope In the elevator bidirectional governor consisting of a vibration preventing device for tensioning the rope by weight and at the same time to prevent vibration and shaking of the lower rope pulley, The vibration preventing device 300, An adjusting hole 315 formed in an upper portion of the support plate 310 mounted on the guide rail G; A lever plate 320 rotatably mounted at an end of the support plate 310 and a center of the lower rope pulley 350, and having a weight member W mounted at one end thereof; An elevator bidirectional governor, comprising a link plate (330) mounted between the adjustment hole (315) and the lever plate (320) to be movable within the adjustment hole (315). According to claim 1, wherein the tension control means a plurality of mounting holes (212) formed in a predetermined interval on the front plate 210; Tension guide plate 290 is rotatably mounted in any one of the mounting holes 212, the pin hole 292 is formed at one end at a predetermined interval so that the pin hole 292 is matched with the other mounting holes (212) )Wow; A fixing pin (P) fitted into the matched mounting hole (212) and the pin hole (292) to fix the tension guide plate (290); Elevator tension bidirectional governor, characterized in that it comprises a spring (270) mounted between the other end of the tension guide plate (290) and the pendulum (260). The method of claim 1, wherein one side of the inner side of the adjustment hole 315 has a curved concave-convex portion 316 is formed so that the bolt (B) coupled to the link plate 330 is caught. governor.

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