KR980009086A - Rope Braking System for Elevator - Google Patents

Abstract

The present invention provides a movable plate provided with a brake lining having a trapezoidal cross-sectional shape when the elevator is slid slowly to a slip phenomenon of the rope when the elevator is running at a normal speed or when the elevator is running faster than the normal speed. It acts as an auxiliary braking device that prevents the sliding and overspeed of the elevator by operating the momentary narrowing of the elevator traction rope to enable stable operation of the elevator. An elevator rope brake device, comprising: a driving unit operated, a power transmission unit for transmitting a driving force from the driving unit, and a locking unit for locking or releasing the elevator rope according to an eccentric rotation operation of the operating unit. The.

Description

Rope Braking System for Elevator

(A) (b) of FIG. 1 is a schematic diagram which shows the installation use example of this invention.

2 is a front perspective view of the present invention.

3 is a rear perspective view of the present invention.

4 is a front view of the present invention.

(A) and (b) of FIG. 5 is an explanatory diagram showing an operating state of the present invention.

(A) (b) of Figure 6 is a plan view showing the operating state of the locking portion according to the present invention.

7 is a perspective view of the lining is installed on the movable plate of the locking portion according to the present invention.

Figure 8 is a perspective view of the operating rod penetrating the fixing plate of the locking portion according to the present invention one end is installed on the movable plate.

* Explanation of symbols for main parts of the drawings

1: elevator 2: driving part

3: power transmission unit 4: operation unit

5: Locking part 6: Rope

8: housing 11: switch cam

21: Drive brake motor 22: Reducer

33: Chain 34, 35: Sprockets

41: Delivery axis 43: Eccentric cam

51: fixed plate 51b: urine arc type surface

51a, 52a: Lining 52: Moving board

52b: Interlock locking groove 53: Connecting member

54: Spring

The present invention relates to a rope braking device for an elevator, and more particularly, a brake lining having a trapezoidal cross-sectional shape when the elevator is slid slowly to a slip phenomenon of the rope while the elevator is stopped or when the elevator is driven faster than the normal speed. By operating the installed movable plate to lock the elevator traction rope in an instant, the auxiliary braking device that can prevent the sliding and the overspeed of the elevator is designed to ensure the safe operation of the elevator.

In general, elevators that move passengers while vertically moving up and down high-rise buildings are connected to ropes towed by motors, and the elevators are moved up and down, and the elevators are moved to guide guides guided by guide rails on both sides of the elevator. It moves up and down without flow.

In addition, the elevator as described above is provided with a driving brake device for stopping the elevator on the displayed floor by recognizing this in the control unit when the elevator passenger presses the button of the floor to go inside or press the button for the elevator from outside each floor, When the elevator stops on the target floor after slipping of the braking force and the frictional force of the traction rope and hoisting pulley or the weight difference between the elevator car and the counterweight, the slippage occurs when the passenger gets on or off and jumps and falls over the specified speed. The provision of an operating brake system prevents the occurrence of safety accidents in elevators.

Conventionally developed various emergency braking devices are mainly used to control the abnormal operation of the elevator by restraining the guide rail for guiding the elevator with a wedge-shaped jaw, such emergency braking device is the gabanner switch when detecting the speed The motor was shut off, further restraining the Gavarner rope, and the wedge-shaped emergency braking system restrained the guide rail.

However, the emergency braking device as described above operates only when the elevator falls suddenly above the normal speed, and there is a problem that the rope cannot be effectively braked when the vehicle slips at a low speed in a stop state and when the sudden rise exceeds the normal speed.

Recently, in order to solve the above problems, the cylinder rod is held in the locked state by the solenoid. When an abnormal operation signal of the elevator is detected, the cylinder rod is released from the solenoid, and the released cylinder rod is braked by the spring repulsion force. An emergency braking system has been developed to pull the shoe into the rope to make an emergency braking system. However, such a braking system must maintain a braking pressure of about 1000 kg or more. When the old shoe is opened, it is necessary to use hydraulic or pneumatic equipment, so the manufacturing and manufacturing cost is high, and thus the purchase and use of the same shoe is excluded.

Therefore, the present invention provides an elevator braking device by locking the rope of the elevator momentarily and strongly during abnormal operation in which an elevator installed to move up and down a high-rise building conveniently moves faster than normal speed or moves slowly as it slides in a stopped state. In addition to preventing various accidents due to breakdowns or defects, the elevator can be emergencyly braked even when the elevator descends abnormally or rises, thereby maximizing safety due to the operation of the elevator. It is an object of the present invention to provide a rope brake device for use.

In order to achieve the above object, the present invention, the drive unit is operated by receiving a signal from the control unit of the elevator, a power transmission unit for transmitting the driving force from the drive unit to the operation unit, the elevator according to the eccentric rotation operation of the operation unit A characteristic element is configured as a locking portion for locking or releasing the rope.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Among the ropes 6 hanging on the hoisting pulley 7 of a machine room equipped with a hoist, an elevator 1 is installed or In the rope braking device (A) for braking the side of the rope (6) on which the counterweight (9) is provided, the drive unit (2) operated by receiving a signal from the control unit of the elevator (1), and the drive unit (2) And a power transmission unit 3 for transmitting the driving force from the control unit to the operating unit 4 and a locking unit 5 for locking or releasing the elevator rope 6 in accordance with the eccentric rotation operation of the operating unit 4. do.

In the above configuration, as shown in FIG. 2 and FIG. 4, the drive unit 2 is composed of a drive brake motor 21 and a reducer 22 installed at the lower portion of the housing 8, and the power transmission unit ( 3) the sprocket 34 provided on the reduction gear 22 shaft of the drive section 2 and the sprocket 35 provided on the transmission shaft 41 of the operation section 4 and the sprocket ( 34) are composed of a chain 33 connecting each other.

The operation unit 4 is fixed to each of the eccentric cams 43 formed with the arc portion (43a) formed on one side of the outer circumferential surface on both sides with the switch cam 11 installed in the middle of the transmission shaft 41, On the outer surface of the eccentric cam 43, the roller 55a at the tip of the operating rod 55, which penetrates the fixing plate 51 of the locking portion 5, and has one end in surface contact with the movable plate 52, is in rolling contact. .

The locking part 5 is a fixed plate 51 fixed to the housing 8 and a movable plate 52 connected as a plurality of connecting members 53 to be pressed by a plurality of springs 54 toward the fixed plate 51. And, the connecting member 53 is penetrated by a fixed force so that the plurality of springs 54 are urged by a constant force is composed of a sealing plate 56, the fixing plate 51 is shown in (a) of FIG. As shown, a lining 51a having a plurality of rope contact injection arc narrow surfaces 51b formed to protrude from the plate surface is attached and the movable plate 52 has a plurality of trapezoids on the front surface as shown in FIG. 7B. A lining 52a having a concave inlet locking groove 52b is attached, and a seating groove 56a and a connection member 53 on which a plurality of springs 54 are seated on a contact surface of the spring 54 of the bottom plate 56. ) Is formed through a plurality of through holes (56b), the number of the mounting groove (56a) and the through holes (56b) Not that specific.

In addition, the fitting surface 55b of one end of the operating rod 55 shown in FIG. 8 is fitted to the fixing surface 51 side facing surface of the movable plate 52 to the rolling roller 55a at its tip. It is made to contact the outer surface of the eccentric cam 43 of the operating unit 4, the operating rod 55 is moved by the eccentric rotation operation of the eccentric cam 43, the movable plate 52 causes the shot of the spring 54 When the eccentric cam 43 continues to rotate after reaching the top dead center, the operating rod is formed by the arc part 43a formed on one side of the eccentric cam 43 against the force. The 55 is suddenly returned to its original position by the spring force of the spring 54.

In addition, a separate switch cam 11 is installed in the middle of the transmission shaft 41 provided with the eccentric cam 43 of the operation unit 4, and a limit switch 10 is installed at the bottom of the diaphragm 8a of the housing 8. By limiting the eccentric rotational movement range of the eccentric cam 43 by limiting the switch cam 11 in contact with the limit switch 10 in accordance with the rotation of the transmission shaft 41 to the locking portion 5 The open completion signal is sent to the control unit to maintain the open state.

In the above configuration, the limit switch 10, which sets a practical operating limit of the drive brake motor 21, may be operated for 2-3 seconds in order to prepare two switches under normal operation and a state in which the two switches are inoperable. It is preferable to install a preliminary limit switch 10 that can be operated at regular intervals, but this is not necessarily specified. The operational operation state and effect of the elevator rope braking device A according to the present invention having the above configuration will be described.

First, in a state where the power supply to the drive unit 2 is short-circuited, that is, the elevator 1 is stopped, the movable plate 52 is closed by the elastic force of the spring 54 as shown in FIG. 5A. Since the state close to the stationary plate 51 is maintained, a plurality of ropes 6 positioned between the movable plate 52 and the stationary plate 51 are locked as linings 52a and 51a, that is, lining 52a. It is held by the concave locking groove 52b and the arc surface 51b of the lining 51a. At this time, the operating rod 55 connected to one end of the movable plate 52 has the movable plate 52 closely connected to the fixed plate 51 by a spring 54 provided between the movable plate 52 and the contact plate 56. In this state, the roller 55a at the tip is kept in contact with the outer surface of the eccentric cam 43 of the operating unit 4.

In this state, when the elevator 1 moves up and down by button operation, in order to unlock the rope 6 in the locked state, first, the driving brake motor 21 is applied as power is applied to the drive unit 2. And the driving force of the driving brake motor 21 is transmitted to the sprocket 34 of the power transmission unit 3 in a state in which the driving force of the driving brake motor 21 is decelerated by a predetermined ratio while passing through the chain 33. The transmission shaft 41 of (4) is to be transmitted to another sprocket 35 fixed to one end to operate the operating unit (4).

As such, the driving force of the driving brake motor 21 transmitted to the transmission shaft 41 of the operation unit 4 rotates the transmission shaft 41, and thus the eccentric cams 43 respectively installed on the transmission shaft 41 are provided. While the eccentric rotation, the roller 55a of the tip of the operating rod 55, which is in contact with the respective outer circumferential surface, is pushed to the right, and the pushing force is transmitted to the operating rod 55 as it is, and the operating rod 55 is pushed out. The pushing force of the operating rod 55 is transmitted to the movable plate 52 of the locking part 5 as it is.

Then, the movable plate 52 is opened from the fixed plate 51 while being pushed outward as shown in FIG. 6B against the elasticity of the plurality of springs 54 provided between the plate 56. The rope 6, which has been separated and locked by the crimp stencil lock, is placed in the unlocked state through the linings 51a and 52a with respect to the fixed plate 51. At this time, the eccentric cam 43 rotated is As the switch cam 11 installed between the eccentric cams 43 contacts the limit switch 10 installed on the bottom of the diaphragm 8a of the housing 8, the driving brake motor 21 is in a state of stopping operation and the built-in brake Is in an operating state to prevent the motor from rotating arbitrarily to maintain the rotation inhibited state until the power is applied to the brake of the drive brake motor 21 again to maintain the unlocked state for the rope (6) (1) is in an operating state, i.e., up and down To get into a strong state.

As such, the elevator 1 is normally operated in a state where the fixing plate 51 and the movable plate 52 of the locking unit 5 are opened, and thus an emergency, that is, the braking force of the elevator driving brake device is reduced, the traction rope and the pulley pulley friction force are reduced, or the elevator When the elevator stops on the target floor due to the difference in weight between the car and the counterweight, the slippage occurs at the moment when the passenger gets on or off, or the control unit of the elevator (1) sends a signal to the driving unit (2) when the elevator suddenly rises or falls over the specified speed. The eccentric cam 43, which pushes the operating rod 55, by turning off the power applied to the brake of the motor 21 and making the driving brake motor 21 idle, has a rotational suppression force applied to the transmission shaft 41. At the same time, the movable plate 52 is momentarily moved toward the stationary plate 51 by the elastic force of the spring 54 which is released and simultaneously presses the movable plate 52 of the locking unit 5 to the stationary plate 51 side. In this case, the roller 55a at the tip of the operating rod 55 which maintains contact with the outer surface of the eccentric cam 43 is suddenly positioned by the arc part 43a formed at one side of the outer circumferential surface of the eccentric cam 43. As it is returned to, the movable plate 52 pushes the operating rod 55 to its original position, leaving the rope 6 which is in the unlocked state in the interlocked locking state, thereby safely stopping the elevator 1.

At this time, the fixing plate 51 constituting the locking portion 5 has a lining 51a formed by protruding a plurality of rope contact recessed arc surfaces 51b on the upper surface from the plate surface, and the movable plate 52 has a trapezoidal cross section in the longitudinal direction on the front surface. Linings 52a having a large number of concave concave locking grooves 52b are attached to each other so that the rope 6 has a concave concave surface 51b of both linings 51a and 52a and a trapezoidal concave locking groove 52b. It becomes the state sandwiched between) and the wedge effect makes it possible to maintain the locking state more reliably.

In addition, the rope braking device A of the present invention protrudes a predetermined length to the outside of the housing 8 on one side (opposite side of the power transmission unit 3) at the other end of the drive brake motor 21 in case of power failure or other emergency situation. Since the other end of the drive shaft motor protruding out of the housing 8 with a separate tool such as a monkey spanner, the drive shaft of the drive brake motor 21 is rotated. By allowing the power transmission unit 3 connected to one end to release the locking state manually by non-power, it is also possible to actively cope in an emergency situation.

As apparent from the above description, according to the elevator rope braking apparatus according to the present invention, an elevator installed so as to move up and down a high-rise building conveniently moves faster than the normal speed or slowly moves as if sliding in a stopped state. By locking the rope of the elevator strongly, it is possible to prevent various safety accidents due to the failure or failure of the elevator brake system, and to make the elevator emergency braking even when the elevator descends abnormally. It provides useful effects such as maximizing safety.

Claims (1)

A rope braking device (A) for braking the side of the rope (6) provided with the elevator (1) or the side of the rope (32) provided with the counterweight (9) among the ropes (6) caught by the hoisting pulley (7) of the machine room provided with the hoist. A drive part (2) comprising a drive brake motor (21) and a reducer (22) operated by a signal from a control part of the elevator (1); A power transmission part 3 serving as a sprocket 35 for transmitting the driving force of the driving part 2 to the operation part 4 via the sprocket 34 and the chain 33; The switch cam 11 is installed in the middle of the transmission shaft 41 having one end connected to the sprocket 35, and both sides of the eccentric cams 43 and 43 each having an arc portion 43a formed on one side of the outer circumferential surface thereof. An operating part 4 rotatably installed in the housing 8 while being fixedly installed; A plurality of springs 54 are provided between the contact plate 55 and one end of the operating rod 55 having the roller 55a in contact with the outer surface of the eccentric cam 43 of the operating unit 4. A locking part 5 which is provided between the fixed plate 51 and the contact plate 56 as a plurality of connecting members 53 by the movable plate 52 which is pressed to the fixed plate 51 side by the < RTI ID = 0.0 > Rope brake device for an elevator, characterized in that configured as. 2. The method of clause 1, further comprising: Of the fixed plate 51 and the movable plate 52 which form the said locking part 5, the fixed plate 51 is provided with the lining 51a which formed the rope contact concave-shaped arc surface 51b many protrusions from the plate surface, and the movable plate 52 The elevator rope braking device, characterized in that attached to each of the lining (52a) formed with a plurality of inlet locking groove (52b) having a trapezoidal cross-sectional shape on the front. ※ Note: The disclosure is based on the initial application.