KR100763830B1 - A rope brake device for elevator - Google Patents

Abstract

A rope breaking apparatus for an elevator is provided to improve the reliability and security of passengers in the elevator by stably holding a rope and maximizing a driving force for breaking the rope. A rope breaking apparatus for an elevator includes a pair of linking devices(50), and a driving device(40). The pair of linking devices(50) are composed of more than one pair of 2-joint links(52), has both ends connected to both sides of a fixed plate(10) and a moving plate(20), and has a link hinge member(70) at one end of a connecting bar(60) which connects curved parts in the middle. The driving device(40) transmits or interrupt power to the link hinge member(70) of the linking device(50).

Description

Rope brake device for elevator

1 is a schematic view showing a rope elevator for a general elevator.

Figure 2 is an exploded perspective view showing the configuration of the rope braking device according to the present invention.

Figure 3a, 3b, 3c is a front view, a side view and a plan view showing the configuration and operation of the rope braking device according to an embodiment of the present invention.

Figures 4a, 4b, 4c is a front view, a side view and a plan view showing a rope braking state according to an embodiment of the present invention.

Figure 5 is an overall perspective view showing the appearance of the rope braking device according to another embodiment of the present invention.

Figure 6 is a perspective view showing the back of the rope braking device according to another embodiment of the present invention.

7 is a front view showing a rope braking device according to another embodiment of the present invention.

Figure 8 is a left side view showing a rope braking device according to another embodiment of the present invention.

9 is a plan view showing a rope braking device according to another embodiment of the present invention.

10 is an exploded perspective view showing a rope braking device according to another embodiment of the present invention.

11A, 11B, and 11C are front, side and plan views showing an operational standby state according to another embodiment of the present invention.

12A, 12B and 12C are front, side and plan views showing a shock-absorbing state during emergency braking operation according to another embodiment of the present invention.

Figure 13a, 13b is a front view, a side view and a plan view showing a braking completion state by a rope braking device according to another embodiment of the present invention.

Figure 14a, 14b is a perspective view showing the configuration and operation of the drive means of the rope braking device according to another embodiment of the present invention.

Figure 15a, 15b is a perspective view showing the configuration and operation of the link folding means of the rope braking device according to another embodiment of the present invention.

16a and 16b are schematic side views showing main limit switching means of a rope braking device according to another embodiment of the present invention;

17 is a partially cutaway exploded perspective view showing the configuration of a manual operation means of the rope braking device according to another embodiment of the present invention.

Figure 18a, 18b is a side view showing the main operation of the manual operation means of the rope braking device according to another embodiment of the present invention.

※ Explanation of code about main part of drawing ※

One ; Rope 2; Hoist Pulley

3; Elevator 4; Counterweight

5; Rope brake system 6; Fixed frame

10; Movable plate 11; Lining

20; Fixed plate 21; Fixed Lining

30; Braking spring 31; Guide shaft

40; Drive means 41; Hydraulic cylinder

50; Link mechanism 51; Refraction

52; 2 link 53; Rotating Hinge

54; Link 60; Connecting rod

70; Link folding means 71; Push Road

81,82; Rack gear 90; Geared motor

91,92; Pinion gear 91a; Pinion gear shaft

93; Ratchet 94; One-way driving gear

95; Tension spring 96; Setting hole

101; Solenoid 102; road

110; Pull lever 120; Limit switch

130; Sensing block 131; incline

140 Manual override 141; Manual Operation Fixing Plate

142; Manual operation handle 143; Manual bolt

144; Fixing plate 145; Coil spring

146; Tension spring 147; Ratchet

148; Ratchet Gears 150 Shock Absorbing Space

151; Coil spring

The present invention relates to a rope braking device for an elevator, and more particularly, the elevator slips slowly due to slippage of the rope in an idle state while operating in conjunction with a driving braking device that is operated when the elevator is operating normally. Is operating in emergency situations such as sudden ascent and sudden descent, which is running faster than normal speed, and clamps the rope in an instant. In addition, the driving force for braking the rope is a direct driving force. In addition to ensuring the reliability of braking the rope, it has a buffering effect that can guarantee the safety of passengers in the elevator caused by the impact of instantaneous rope braking, as well as having a low production cost and easy maintenance. Rope brake station for elevator Relate to.

In general, an elevator is a system device for moving passengers in a high-rise building, and is connected to a traction rope operated by a high-power drive motor to move up and down.

The elevator is provided with a driving brake as an essential means for stopping the passengers on the desired floor, as shown in Figure 1 as a supplementary means for reducing the braking force of the driving brake and the traction rope (1) and hoisting pulley ( Due to the decrease in frictional force of 2) or the difference in weight between the elevator 3 and the counterweight 4, slippage occurs at the moment when the passenger stops at the destination floor and when the passenger rides down or exceeds the specified speed The rope braking device 5 for clamping and braking the rope 1 in a descending emergency is provided by the fixed frame 6 and the fixed plate 7 to be essentially provided to prevent safety accidents during operation of the elevator 3. In order to prevent this, the construction law is mandatory.

As described above, an elevator rope braking device used in an emergency includes a pair of movable plates having linings for clamping and pressing the ropes, and a driving means for pressurizing the ropes by transmitting a driving force to the movable plates. In addition, it is common to be configured as a control device including a sensor device for operating the drive means by detecting the operating state of the elevator when the emergency driving situation occurs in the usual times.

The rope braking device is largely divided into a direct pressure type and an indirect pressure type according to the arrangement structure of the movable plate for braking the elevator by clamping and pressing the rope and the method of transmitting the driving force applied to the movable plate.

The direct pressure type is a configuration in which the pressing force applied to the rope is applied directly from the driving means, and the prior arts to which the direct pressure type is applied include Patent Publication Nos. 1999-52147 and Patent Publication Nos. 2000-21522.

A common feature of these prior art is that the drive means, which are integrally connected with a pair of movable plates, which are held at a predetermined interval for clamping the rope, for example, the cylinder rod of the hydraulic cylinder and the movable plate are directly connected. The driving force of the hydraulic cylinder is configured to transmit the pressing force to the movable plate as to clamp and press the rope interposed between the movable plate to brake the elevator in an emergency situation, after the emergency situation of the spring force of the compression spring By the above configuration, the movable plate is returned to its original position to operate normally.

In the case of the indirect pressure type, the pressing force applied to the movable plate for holding the rope is replaced with a compression spring to configure the rope to be braked by the elastic force of the compression spring, and the compression spring is used as the driving means in the waiting state. After the compression is configured to maintain the state of the shot with a locking means, the prior art to which such an indirect pressure expression is applied, Patent Publication No. 195-7002502, Patent Publication No. 1998-9084 and Patent Publication No. 2003-83873 have.

The characteristics of the prior art of the indirectly pressurized rope braking device are that a pair of movable plates which are supported to be elastically compressed to the compression spring which is compressed by the driving means is compressed by the unlocking operation of the locking means. The movable plate is clamped and pressed by the elastic force of the compression spring while the transmission state is released.

By the way, in the conventional rope braking device, the direct pressure rope braking device is not a configuration in which the pressing force transmitted from the driving means is applied in stages, but is directly transmitted to the movable plate, so that the rope is momentarily clamped and the shock is applied. Due to the sudden braking of the elevator to rise or fall there was a problem.

Therefore, the elevator caused a problem that the impact caused by the sudden braking of the rope is transmitted to the passenger in the elevator as it is causing a safety accident.

In addition, in order to brake an elevator having a considerable weight, a large braking force corresponding to a force applied to the rope must be applied to the rope, so that a driving means such as a hydraulic device used in a direct pressure rope braking device requires a high output specification. As a result, the specifications of the peripheral control device and the control circuit device are also implemented as high-power and high-value specifications. As a result, the size of the auxiliary rope braking device is also increased by the size of the driving braking device. There was a limit to the widespread use of braking devices.

On the other hand, the conventional indirectly pressurized rope braking device must be operated stably the movable plate in order for the pair of movable plates to elastically clamp the rope.

Thus, the movable plate is configured to be folded and sandwiched in a manner of rotating about a hinge or the edge of the movable plate is stably supported by a plurality of guide shafts so that the compression spring elastically supports the rope. It is made to cooperate.

However, since the compression spring used for the indirect pressurization has elasticity enough to brake the rope, the specification of the driving means, such as a hydraulic device, a driving motor, and a reduction gear, used to compress the compression spring having a high elasticity, is also the direct pressure type. No less than high power specifications are required.

Therefore, the scale of the rope braking device is increased, such as the direct pressure rope braking device, and there is an inherent structural limitation that inevitably increases the cost of living.

To this end, in the indirect pressure rope braking device, in particular, the elevator safety device of Patent Publication No. 2003-83873 has an indirect pressure type configuration, but does not use a high-power motor as described above, but uses a ball on a pair of drive gear shafts by a reduction gear. By employing a screw shaft, the compression spring is compressed with the power of a low-power motor, and then the compressed state is locked by a separate locking means.

Then, the locking state is released by the solenoid by releasing the engagement state between the drive gear and the reduction gear by a circuit sensing operation, and the ball screw reversely rotates by the operation plate presses the rope with the elastic force of the compression spring. So as to brake the rope.

The elevator safety device as described above can be seen to ensure the stability of the movement of the movable plate in parallel movement along the ball screw shaft and the guide shaft by the operation of the movable plate is clamped by the elastic force of the compression spring.

However, since the pinching speed of the movable plate moving along the axis of the ball screw does not properly respond to the pinching operation in terms of speed, there is a problem that the reliability of the emergency braking device requiring instantaneous operation cannot be secured.

That is, since the time speed at which the movable plate clamps the rope is proportional to the speed and distance at which the elevator rises or falls in an emergency situation, the emergency braking distance is very inefficient than the direct pressure rope braking device, which may cause a safety accident. As a result, serious braking problems such as rapid braking may occur, and thus, when applied to an actual braking device, there are many structural problems in product design and manufacturing.

On the other hand, these conventional direct and indirect pressure rope braking devices are designed to be possible only when the power supply is set to the initial installation and initial mode, or to switch back to the initial return mode after the emergency operation.

As a result, there was no additional configuration for manual operation in a situation where power was not supplied. In particular, in the case of a rope braking device consisting of a reduction gear and a driving gear driven by a motor, the reduction gear rotates in only one direction. Since the configuration is difficult to release by manual operation, there is an inefficient problem in initial installation and maintenance, such as disassembling the braking device or waiting for the power supply to resume.

The present invention has been made to solve the above-mentioned conventional problems, the object of which is to lift the rope while at the moment of the emergency in the emergency situation, the driving force transmitted to the movable plate for pinching the rope to the rope The pressing force to be pressurized is to provide an elevator rope braking device configured to have a driving force transmission link mechanism that can be maximized.

Another object of the present invention is to increase the driving force for braking the rope as much as possible to make the operation as fast as possible the moment the gripping the rope, as well as the pinching operation to be delivered to the rope in multiple stages to clamp the rope with maximum stability This ensures reliability in braking of the rope and at the same time provides a cushioning effect to ensure the safety of the passengers in the elevator caused by the impact of instantaneous rope braking. Inexpensive production costs and easy maintenance. It is to provide a new type of elevator rope braking device that can be applied to both direct pressure or indirect pressure to have a configuration.

It is still another object of the present invention to provide an elevator rope braking device which can be made to perform the operation of returning to the initial mode of the movable plate as needed, even by manual operation without the need for power supply.

The present invention, in order to achieve the above object, while the fixing plate fixed to the outer structure and the movable plate facing the fixed plate is pressed by a spring lining installed on the opposite surface of each plate in close contact therebetween In order to fix the rope of the elevator passing through, at least one pair or more of the two-section link, both ends thereof are connected to both sides of the fixed plate and the movable plate, respectively, and at one end of the connecting portion connecting the intermediate bending portion A pair of link mechanisms provided with link folding means; And drive means configured to transmit or short-circuit power to the link folding means of the link mechanism.

Another feature of the present invention, the drive means is composed of a hydraulic pump and a hydraulic cylinder interlocked therewith, the link folding means is connected to one end of each of the connecting rod, the other end is connected to the cylinder rod of the hydraulic cylinder The push rod is provided so that the connecting rod folds the link mechanism by the reciprocating motion of the cylinder rod, and thus the movable plate is opened at intervals with respect to the fixed plate. It is made to clamp the rope.

Another feature of the present invention, the link folding means is a pair of rack gears respectively installed on one side of the connecting table, the fixing plate is installed so as to rotate to engage with each other and the outside is installed so as to engage the rack gear, respectively And a pair of pinion gears which mesh with each other to rotate. The driving means includes a known solenoid installed on the fixed plate, one end of which is installed on the shaft of one of the pinion gears, the other end of which is connected to a pull lever hinged to the solenoid rod to be rotatable. It is installed, one side is made of a geared motor having a one-way drive gear to rotate in engagement with the pinion gear.

Another feature of the present invention is a disc-shaped manual operation fixing plate having a plurality of fixing pins which are located on the same rotation center axis as the pinion gear and selectively connected to a plurality of setting holes formed on the front surface of the pinion gear; A ratchet gear, one end of which is rotatably fitted in the center of the manual operation fixing plate and is mounted elastically on the fixing plate by a spring provided therein, and is installed to be prevented from being reversed by being caught by a ratchet provided to be elastically springed on the outside thereof. Manual operation handle with; The manual operation device further comprises a manual operation device comprising a manual operation fixing bolt which penetrates to the center of the manual operation handle, one end of which is screw-assembled to the fixing plate, and the other end of which is engaged with the internal end of the manual operation handle. The operation handle and the manual operation fixing plate are elastically in close contact with the pinion gear side to coincide with the fixing pin and the setting hole to manually rotate the pinion gear so that the initial mode can be set even in a non-powered state.

Still another feature of the present invention is that a buffer space portion is formed between one of the plates and the lining, and a plurality of shock absorbing members are provided in the buffer space portion to minimize the braking shock generated by the pinching operation of the rope. It is.

When described in more detail with reference to the accompanying drawings as specific embodiments of the present invention as follows.

Figure 2 is an exploded perspective view showing the configuration of the rope braking device according to an embodiment of the present invention, Figure 3 (a) (b) (c) is a front view showing the configuration and operating state of the rope braking device according to an embodiment of the present invention 4A, 4B and 4C are front, side and plan views showing a rope braking state according to an embodiment of the present invention.

1 to 3 (a) (b) (c), the elevator rope braking device according to the present invention is an elevator rope (3) in the emergency when the sudden sudden rise and sudden descent above the specified speed ( It is provided by the fixing plate 7 on the fixed frame 6, for clamping and braking 1).

This rope braking device is made to have a configuration of the indirect pressure type to operate stably by preventing the impact as in the conventional direct pressure type while the pressing force for holding the rope 1 is sufficiently made.

That is, as a basic configuration of the rope braking device according to the present invention, a pair of plates having respective linings for clamping and pressing the ropes is provided as in the prior art, and a plurality of plates for imparting driving force to pressurize the ropes are provided. It is provided with a braking spring, and is configured as a driving means for holding the braking spring by pressing the braking spring.

In addition, a control device (not shown) including a sensor (not shown) for detecting an operating state of an elevator and detecting an emergency driving situation and operating and stopping the driving means is additionally configured.

According to the present invention, the plate is composed of a fixed plate 10 and a movable plate 20 so as to face each other in parallel, and the lower end of the fixed plate 10 is provided with a fixing bracket (B) to the fixed frame ( 6) is installed in a line with the rope (1) to adjust the angle so as to sandwich the rope (1) in parallel.

In addition, two pairs of guide shafts 31 are assembled side by side at the edge of the movable plate 10 so that the plurality of braking springs 30 have a predetermined elastic force through the fixed plate 20 and the other end thereof. They are fitted together and are assembled to be elastic.

Therefore, the movable plate 10 is movable in parallel with the guide shaft 31 with respect to the fixed plate 20, and when the braking spring 30 is in a compressed state, the movable plate ( 10) and the fixed plate 20 is spaced apart at regular intervals, the movable plate 10 is in close contact with the fixed plate 20 by the elastic force of the braking spring (30).

In addition, a movable lining 11 and a fixed lining 21 for clamping and pressing the rope 1 are attached to surfaces of the movable plate 10 and the fixed plate 20 that face each other. (11) and the fixing lining 21 is assembled to be detachable, attachable so that after a long time use.

The rope braking device having a basic configuration as described above is configured to follow the indirect pressure type in which the rope 1 is clamped, so that the movable plate 10 and the fixed plate 20 in a state where the rope 1 is opened at predetermined intervals. Drive means for initially opening the movable plate 10 and the fixed plate 20 at predetermined intervals by being configured to pinch the rope 1 by the elastic force of the braking spring 30 in a state located between ( 40 and a link mechanism 50 are provided.

The link mechanism 50 according to the present invention is composed of at least one pair of two-piece links 52 having a refraction portion 51 hinged at an intermediate portion thereof, and both ends thereof are the movable plate 10 and the Both sides of the fixing plate 20 are connected to each other by the coupling by the rotary hinge 53, the ends thereof are connected to the hinge assembly by the connecting link 54 again by the refracting operation of the refracting portion 51 A pair of the two-section link 52 is configured to work together at the same time.

In addition, the refraction section 51 of each of the two links 52 is provided with a connecting table 60 is configured to be folded at the same time the two pairs of two links 52, one side of the connecting table 60 Link folding means (70) for folding the two-way link 52 is provided.

In addition, the driving means 40 is composed of a known hydraulic pump (not shown) and the hydraulic cylinder 41 as an embodiment thereof, the link folding means 70 is both ends of the connecting table 60, respectively It is composed of a push rod 71 connected to the cylinder rod 42 of the hydraulic cylinder (41).

Therefore, when the push rod 71 is moved up and down by the operation of the hydraulic cylinder 41, the connecting rod 60 is moved up and down simultaneously, so that the two-section link 52 of the link mechanism 50 ) Is to be folded to be folded by the refracting portion (51).

Here, one of the two-piece link 52 is connected to the fixed flakes 20 by the rotary hinge portion 53, and the other side is connected to the movable plate 10 by the rotary hinge portion 53 When the connecting table 60 is pulled, the movable plate 10 is pulled toward the fixed plate 20.

On the contrary, when the connecting table 60 is raised by the cylinder rod 42 of the hydraulic cylinder 41, the two-piece link 52 is unfolded and the movable plate 10 is removed from the fixed plate 20. It will happen.

The movable plate 10 and the fixed plate 20 are clamped and pressurized by the rope 1 by the link mechanism 50 according to the present invention performing such a folding operation.

Such a link mechanism according to the present invention can be implemented in various forms according to the combination configuration and structure of the link bar, the low-power drive means can stably compress the braking spring even by force and the operation Reliability is also very high, if the link mechanism according to the present invention is applied to the rope braking device it is possible to significantly lower the production cost, it is possible to implement a very economical and efficient rope braking device, such as easy maintenance.

Therefore, in the rope braking device according to the present invention, the initial mode state utilizing the link mechanism 50 should be set in an indirect pressure type.

That is, the movable plate 10 and the fixed plate 20 are normally maintained at a spaced apart state from each other, so that the braking spring 30 to maintain the compression state in order to press the rope (1) accordingly It is configured by setting.

To this end, the rope braking device according to an embodiment of the present invention employs a hydraulic cylinder 41 as a driving means 40 for compressing the braking spring 30 by a folding action of the link mechanism 50. The connecting rod 60 is connected to the push rod 71 of the link folding means connected to the cylinder rod 42.

As described above, the rope braking operation of the rope braking device according to the embodiment of the present invention will be described.

First, the initial mode state should be a state in which the link mechanism 50 is unfolded as shown in FIGS. 3A, 3B, and 3C.

That is, when the cylinder rod 42 of the hydraulic cylinder 41 is raised, the connecting table 60 is raised, so that the two-section link 52 of the folded link mechanism 50 is unfolded.

At this time, the movable plate 10 is gradually spaced apart from the fixed plate 20 to move in parallel along the guide shaft 31, the braking spring 30 is fitted to the guide shaft 31 is Compress gradually.

In the compression completion state of the braking spring 30, the hydraulic circuit of the hydraulic cylinder 41 is kept closed, so that the link mechanism 50 is continuously maintained in a folded state.

In addition, since the maximum compression state of the braking spring 30 is determined by the movement distance by the control of the hydraulic circuit and the lifting stroke of the hydraulic cylinder 41, an additional additional sensing device is not required.

In this state, when an emergency situation occurs during operation of the elevator 3, the hydraulic circuit of the hydraulic pump is closed by the signal operation of the elevator control unit (not shown) as shown in FIGS. 4A, 4B, and 4C. The cylinder rod 42, the push rod 71 of the link folding means 70, and the connecting table 60, which are raised by the elastic force of the braking spring 30, are lowered as they are switched to the open state at At the same time, the movable plate 10 is moved in parallel to the fixed plate 20 side.

Accordingly, the two-segment link 52 of the link mechanism 50 is instantaneously folded in the unfolded state by the connecting table 60, so that the fixing lining 21 and the movable plate 10 of the fixing plate 20 are folded. Since the movable lining 11 clamps the rope 1, the elevator 3 is stably and reliably braked.

On the other hand, according to another embodiment of the present invention is provided with a rope braking device having a more stable configuration mechanically the configuration of the drive means, which will be described in detail as follows.

Figure 5 is an overall perspective view showing the appearance of the rope braking device according to another embodiment of the present invention. Figure 6 is a perspective view showing the back of the rope braking device according to another embodiment of the present invention. 7 to 9 is a front view, a left side view, a plan view showing a rope braking device according to another embodiment of the present invention, Figure 10 is an exploded perspective view showing a rope braking device according to another embodiment of the present invention, Figure 14a, 14b is a perspective view showing the configuration and operation state of the drive means of the rope braking device according to another embodiment of the present invention, Figure 15a, 15b is the configuration and operation state of the link folding means of the rope braking device according to another embodiment of the present invention This is a yabu perspective view.

Rope braking device according to another embodiment of the present invention since most of the basic configuration and configuration of the link mechanism follows most of the configuration of the embodiment of the present invention will be omitted by the above description of the configuration, and the reference numerals are used as is Let's do it.

The link folding means 70 and the driving means 40 are configured to have a mechanism configuration with higher operational reliability for rope braking than a hydraulic configuration.

That is, according to another feature of the present invention, the link folding means 70 is provided with a pair of rack gears 81 and 82 on one side of the connecting table 60, respectively, the rack gear 81 The pair of pinion gears 91 and 92 meshes with the front surface of the fixing plate 20 so as to interlock with each other.

Therefore, when the driving force is transmitted to the pinion gear 92 of one side, the other pinion gear 91 is engaged and rotated so that the rack gears 81 and 82 make linear movements in the up and down directions. The two-section link 52 will be able to be folded.

And, as the drive means 40 for transmitting power to the pinion gears (91) and (92) includes a known solenoid (101) installed on the fixed plate (20), one end of which It is installed on the shaft (91a) of the pinion gear 91 of the other end is connected to the pull lever 110, which is hinged to the rod portion 102, the solenoid 101 is installed rotatably, one side the pinion It consists of a geared motor 90 having a one-way drive gear 94 by a ratchet 93 which meshes with the gear 92 to rotate.

In addition, the geared motor 90 is installed in a state that one end is pulled in the opposite direction rotated by the tension spring 95 fixed to the fixed plate (20).

Therefore, when the solenoid 101 is operated by a signal of a control unit (not shown) in an emergency situation of the elevator 3, the pull lever 110 is lifted in the opposite direction, and the geared motor 90 is connected to the pinion gear 91. As the shaft 91a is rotated in the opposite direction to the rotation center point, the one-way drive gear 94 is released from the pinion gear 92 so that the movable plate 10 is driven by the elastic force of the braking spring 30. The fixed plate 20 is moved in parallel to sandwich the rope 1 between the movable lining 11 and the fixed lining 21 to press and brake.

In addition, the fixed plate 20 has a stroke in which the movable plate 10 is spaced apart from the fixed plate 20 as shown in FIGS. 16A and 16B, and at the same time, the maximum compression of the brake spring 30 is compressed. A limit switch 120 is provided for limiting the stroke distance, and the bracket 121 of the tip portion of the guide shaft 31 is in contact with the probe 121 of the limit switch 120 to brake the brake. A sensing block 130 having an inclined surface 131 for sensing a compression completion position of the spring 30 is provided.

As described above, the rope braking operation of the rope braking device according to another embodiment of the present invention will be described.

First, the initial mode state should be in the unfolded state of the link mechanism 50 as shown in Figs. 11A, 11B, and 11C.

That is, when the geared motor 90 is rotated about the shaft 91a of the pinion gear 91 by the pull lever 102 of the solenoid 101 and is in close contact with the pinion gear 92, one-way drive gear 94 and the pinion gear 92 rotate in engagement with each other, and another pinion gear 91 adjacent thereto also rotates.

 When the pinion gears 91 and 92 are rotated in engagement with each other, the pair of rack gears 81 and 82 connected to the pinion gears 91 and 92 are simultaneously raised to raise the connecting rod 60 together.

As the pair of two-piece link 52 of the link mechanism 50 is unfolded at the same time by the lifting operation of the connecting table 60, the movable plate 10 is spaced apart from the fixed plate 20. The braking spring 30 is gradually compressed while being moved in parallel.

Here, the moving distance of the movable plate 10 means the compression completion position of the braking spring 30, so that the probe 121 of the limit switch 120 is in contact with the horizontal plane of the sensing block 130. When the movement is located on the inclined surface 131, the limit switch 12 detects this and stops the geared motor 90.

After the geared motor 90 is stopped, the one-way drive gear 94 is caught by the ratchet 93 and thus does not reversely rotate. Thus, the movable plate 10 and the fixed plate 20 are the movable lining 11 and the The gap between the fixed lining 21 is maintained in the state in which the rope 1 is positioned, and the compression state of the braking spring 30 is in an initial mode state which is maintained as it is.

12A, 12B, 12C, and 13A, 13B when an emergency situation occurs such that the elevator 3 suddenly rises or falls while maintaining the initial mode state, that is, the normal operation state of the elevator 3 as described above. As described above, the sensing signal is applied to the solenoid 101 by the operation of the control unit of the elevator 3 itself, thereby releasing the force connected to the rod 102 of the solenoid 101.

Therefore, the geared motor 90 is free and rotated by a predetermined angle to the pinion gear 91 shaft 91a by the tension spring 95 connected thereto, so that the one-way drive gear 94 is The engagement state with the pinion gear 92 is released.

At this time, the engagement state of the pinion gear 92 is released and at the same time, the braking spring 30 that has been compressed to the maximum is elastic in a state supported by the fixed plate 20 by its elastic force, and the movable plate 10 is moved in parallel to the fixed plate 20 by the elastic force of the braking spring 30 so that the movable lining 11 and the fixed lining 21 inside each of the ropes 1 By pressing the clamping force, the elevator 3 is braked.

The series of braking operations as described above simultaneously perform instantaneous operation from the time point at which the signal is applied to the solenoid 102 to clamp and press the rope 1.

On the other hand, according to another feature of the present invention, the geared motor 90 transmits power to the pinion gear 92 when the power is not supplied at the time of the initial installation of the rope braking device or after the elevator emergency situation measures The manual operation device 140 is provided to be able to return to the initial mode state by a manual operation such as a situation in which it is not possible.

The manual operation device 140 is composed of a manual operation fixing plate 141, a manual operation handle 142, a manual operation fixing bolt 143, as shown in Figures 17 to 18a, 18b.

The manual operation fixing plate 141 is formed in a disc shape, is positioned on the same rotational center axis as the pinion gear 92, and selectively provided in a plurality of setting holes 96 formed on the front surface of the pinion gear 92. It is a configuration having a plurality of fixing pins 144 connected.

One end of the manual operation handle 142 is rotatably fitted to the center of the manual operation fixing plate 141, and is elastically assembled with respect to the fixed plate 20 by a coil spring 145 provided therein. It is a configuration having a ratchet gear 148 is installed to catch the ratchet 147, which is provided to be shot with a tension spring 146 on the outside thereof to prevent reverse rotation.

In addition, the manual operation bolt 143 penetrates to the center of the manual operation handle 142, one end of which is screw-assembled to the fixing plate 20, and the other end is fastened to the inner end of the manual operation handle 142 by tightening. The manual operation fixing plate 141 is integrally fastened with the pinion gear 92 so as to be fixed.

When the manual operation device 140 performs manual operation, the manual operation handle 142 and the manual operation fixing plate 141 are pushed in the state before the manual operation as shown in FIG. 18B and the fixing pin 144. When the pinion gear 92 of the setting hole 96 is matched and connected, the manual operation fixing bolt 143 is screwed to the fixing plate 20 using a separate tool, and the manual operation handle 142 is connected. ) And the manual operation fixing plate 141 is integrally connected to the pinion gear 92 to be rotatably connected.

In this state, when the nut unit 142a of the manual operation handle 142 is rotated in one direction by using a separate tool, the pair of pinion gears 91 and 92 are engaged with each other to rotate the rack gear 81. 82 and the two-way link 52 are operated to fold the movable plate 10 against the fixed plate 20 by folding the link mechanism 50, and at the same time to the guide shaft 31. The braking spring 30 is compressed.

When the manual operation handle 142 is rotated, the ratchet gear 148 is caught by the ratchet 147 because the ratchet gear 148 is rotated by the repulsive force of the spring, so that the pinion gear 92 can be stably rotated. In the initial initial mode state, that is, the standoff state for clamping and pressurizing the rope 10, the operator can conveniently return using a simple tool without power supply.

After the return, the power supply can be resumed to operate the normal elevator.

On the other hand, the rope braking device of the present invention configured as described above is further provided with an auxiliary braking means of a stable configuration that can ensure the safety of the passengers aboard the elevator due to the impact of sudden braking in an emergency.

That is, according to another feature of the present invention, the fixing plate 20 and the fixing lining 21 is formed between the buffer space 150, the buffer space 150 is provided with a buffer member in the The rope 1 is made to minimize the braking impact caused by the pinching operation.

The shock absorbing member is preferably composed of a plurality of coil springs 151, and may be replaced with other means capable of acting as a buffer in addition to the coil spring 151.

The coil spring 151 is configured to be distributed and distributed evenly over the entire surface of the fixed lining 21, while braking the rope 1, the movable lining 11 and the fixed lining (21) can stably pressurize.

As a result, when the braking according to the emergency situation of the elevator 3, the movable plate 11 is in close contact with the fixed plate 21 as described above, the elastic force of the braking spring 30 is transmitted to the rope 1 at once If there is a sudden braking.

However, according to the present invention, the coil spring 151 in the buffer space 150 absorbs the shock generated primarily by the moment the rope 1 contacts the movable lining 11 and the fixed lining 21. The rope 1 is pressed quickly and stably, thereby slowing down the speed of the rope that proceeds at a high speed.

In addition, by the pressing action of the movable plate 10 and the fixed plate 20, which are continuously pressurized in a secondary manner, a series of multi-stage damping brakes in which the linings 11 and 21 on both sides further close the rope 1. The action is instantaneous.

This operation can significantly reduce the occurrence of fatal human accidents in the emergency braking process of the elevator in the rope braking device for braking the rope 1 suddenly.

As described above, the embodiments of the present invention have been described and illustrated, but the present invention is not intended to be limited to the above embodiments, and various modifications may be made without departing from the scope of the present invention.

As described above, the present invention utilizes the driving force transmission link mechanism that can minimize the driving force transmitted to the movable plate for holding the rope while maximizing the pressing force applied to the rope to maximize the instantaneous movement of the rope. The driving force for braking the ropes can be increased as much as possible, and the clamping press operation can be transmitted to the ropes in multiple stages so that the ropes can be clamped with maximum stability. A new form that accommodates both direct and indirect pressurization methods that provide a shock absorbing effect that can guarantee the safety of passengers in the elevator caused by the impact of the impact, and have a low production cost and easy maintenance. Providing rope braking devices for elevators The.

In addition, it is possible to provide an elevator rope braking device that can be made to perform the operation of returning to the initial mode of the movable plate as needed, even by manual operation without the need for power supply.

Claims (5)

In the fixed plate is fixed to the outer structure and the movable plate facing the fixed plate is pressed by a spring so that the lining installed on the opposite surface of each plate is in close contact to fix the rope of the elevator passing between them , A pair of link mechanisms having at least one pair of two-links, both ends of which are respectively connected to both sides of the fixed plate and the movable plate, and provided with link folding means at one end of the connecting rod connecting the intermediate bending portion; ; An elevator rope braking device, comprising drive means configured to transmit or short-circuit power to the link folding means of the link mechanism. The method of claim 1, The driving means is composed of a hydraulic pump and a hydraulic cylinder linked thereto, One end of the link folding means is connected to one side of the connecting rod, and the other end includes a push rod connected to the cylinder rod of the hydraulic cylinder, and the connecting rod folds the link mechanism by a reciprocating operation of the cylinder rod. And the movable plate is spaced apart with respect to the fixed plate, and then clamps the rope elastically by the compression action of the spring. The method of claim 1, The link folding means is a pair of rack gears respectively installed on one side of the connecting rod, a pair of pinions are installed to rotate in engagement with each other on the fixed plate and the outer side is installed so as to engage the rack gears respectively. Gears; The driving means includes a known solenoid installed on the fixed plate, one end of which is installed on the shaft of one of the pinion gears, the other end of which is connected to a pull lever hinged to the solenoid rod to be rotatable. It is installed, the rope brake device for an elevator characterized in that the geared motor having a one-way drive gear to rotate in engagement with the pinion gear. The method of claim 3, wherein A disk-shaped manual fixing plate having a plurality of fixing pins positioned on the same central axis of rotation as the pinion gear and selectively connected to a plurality of setting holes formed on the front surface of the pinion gear; A ratchet gear is installed so as to be prevented from being reversed by being caught by a ratchet which is rotatably fitted to the fixing plate by a spring provided at one end thereof and rotatably fitted at the center of the manual operation fixing plate. With a manual operation handle; The manual operation device further comprises a manual operation device comprising a manual operation fixing bolt which penetrates to the center of the manual operation handle, one end of which is screw-assembled to the fixing plate, and the other end of which is engaged with the internal end of the manual operation handle. The elevator steering wheel and the manual operation fixing plate together elastically close to the pinion gear side to match the fixing pin and the setting hole to rotate the pinion gear manually so as to be set in the initial mode even in a non-powered state. Rope Braking System. The method of claim 1, An elevator rope is formed between one of the plates and the lining, and a plurality of shock absorbing members are provided in the buffer space to minimize braking impact caused by the clamping operation of the rope. Braking system.

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