KR200421632Y1 - Traction device for elevator - Google Patents

Abstract

The present invention relates to a hoist applied to an elevator without a machine room.

The present invention is designed to allow for repair at the front of the hoist to facilitate the maintenance of pulleys, rotation sensors, brakes, and wirings, which are the main repair parts of the hoist, and to provide high-density alignment winding for the slimmer of the hoist. It is equipped with an integrated auxiliary fixing device that separates and windings in the form of a split core, and enables combined fastening again, and has an improved bearing fastening structure for supporting the inner ring of the bearing for slimming. In addition, the new brake mounting structure for integrally combining the two brakes and installing them in the upper storage space of the hoisting body can reduce the overall volume of the hoisting machine and completely eliminate interference with the towing rope. Can be used, depending on the upper or lower installation position of the hoist By providing an elevator hoisting machine, etc. so that you can improve the workability associated with the hoist installation eliminates the inconvenience of installing a traction machine turning upside down.

Elevator, hoist, slimmer, water repellency, rotation sensor, split core, brake

Description

Elevator device for elevator

1 is a cross-sectional view showing the structure of a conventional elevator hoisting machine

Figure 2 is a perspective view showing a sensor installation structure in the elevator hoist of the present invention

3 is a cross-sectional view of FIG.

Figure 4 is a front view showing the brake installation structure in the elevator hoist of the present invention

Figure 5 is a perspective view showing a state before assembly of the split core in the elevator hoist of the present invention

Figure 6 is a perspective view showing a state after assembly of the split core in the elevator hoist of the present invention

Figure 7 is a perspective view showing the overall shape of the hoist installed on top in the elevator hoist of the present invention

Figure 8 is a perspective view showing the overall shape of the hoist installed in the lower part of the elevator hoist of the present invention

<Explanation of symbols for main parts of drawing>

10: stator 11: core

12a, 12b: bearing 13: color

14: rotor 15: permanent magnet

16: pulley 17: rope

18: bracket 19: rotation sensor

20: brake 21: cover

22: sensor seating groove 23: sensor bracket

24: protruding jaw 25: axis

26: hole 27: auxiliary bracket

28: core bracket 29a, 29b: inner and outer bracket

30: main part 31: brake bracket

32: terminal box

The present invention relates to a hoist applied to an elevator without a machine room, and more particularly, a sensor installation structure capable of front maintenance, a split core of a compact assembly type that is easy to install, and a brake installation structure that eliminates interference with a towing rope. By providing a hoist including a, it can implement a slimming of the hoist and relates to an elevator hoist that can improve the installation and maintenance of the hoist.

In general, the elevator is provided with a hoist on the upper part of the main frame forming the hoistway, the elevator car is connected to the hoist rope has a structure that can carry passengers or cargo in the vertical direction.

The elevator, which is operated for rapid movement to the upper or lower floor in the building, is connected to the rope by moving the rope wound on the pulley of the hoist with the hoist installed at a predetermined position of the hoistway inside the machine room. It consists of an operation that can move the elevator car in the vertical direction.

Here, the hoist is a device for driving an elevator car by hanging the hoisting rope and rotating the pulley, a drive means for providing rotational force, a pulley for suspending the elevator car to the hoisting rope for vertical movement, and a pulley for driving and stopping the elevator car. It is composed of a brake to stop the rotation of or to maintain the stopped state.

In order to drive an elevator equipped with such a hoist, first, the driving means must control a series of movements such as starting, accelerating, driving, decelerating, stopping and stopping the elevator car by a command of the control unit.

On the other hand, in the past, the hoisting machine, which is a device for elevating elevator cars, was installed in the machine room located in the upper floor of the building and used as a maintenance space. The trend is being applied.

As a result, instead of minimizing and slimming the hoist to eliminate the machine room, a hoist of a synchronous electric drive system is adopted in which a hoist is installed on a hoistway that moves an elevator car and has high efficiency in terms of energy saving.

1 is a cross-sectional view showing the structure of a conventional elevator hoisting machine.

As shown in FIG. 1, a conventional hoist of a synchronous electric motor is classified into an electric motor, a brake, a pulley, a rotation sensor, and the like, and an electric motor is divided into a stator part and a rotor part.

Reference numeral 10 is a stator that serves as a support means, consisting of a frame structure of the form that is easy to install on the hoistway of the elevator, it is fixed to the elevator structure installation rack.

The stator 10 is capable of receiving a heavy load of the elevator by using the rigidity of the frame structure, and serves to support the rotor through a bearing mounted on the inner axial structure.

In addition, reference numeral 11 denotes a core attached to the stator, which is located on the inner peripheral surface of the edge of the stator 10, and generates power to rotate the rotor by mutual electromotive force when the rotor is excited.

In addition, reference numerals 12a and 12b are bearings for inducing rotation, and are subjected to a load applied to an elevator, and the outer ring is attached to the inner diameter of the rotor to rotate, and the inner ring is mounted on the shaft inside the stator to support rotation. Do it.

Here, in order to distribute the concentration of the load, the collar 13 is sandwiched between two bearings to stably support the load.

Reference numeral 14 is a rotor for performing a role of rotation, and overcomes the rope load applied to the pulley, that is, the heavy load of the elevator, and serves to raise and lower the elevator car through the rotation.

The inner diameter of the rotor 14 is in contact with the outer ring of the bearing 12a to receive a rotation guide by the bearing, the outer diameter is provided with a permanent magnet 15 opposed to the core 11.

Accordingly, since the core 11 and the permanent magnet 15 are arranged with air gaps of a predetermined interval on the circumference opposite to each other, torque due to mutual electromagnetic force is generated when applied, and rotation can occur.

In addition, a pulley 16 is inserted into one end of the front surface of the rotor 14 to receive an elevator heavy load applied to the pulley 16.

The pulley 16 is inserted into one end of the rotor to directly guide the rotational movement, and the outer diameter has a plurality of V- or U-shaped grooves are machined on the circumference to adhere the rope.

As a result, the rope is seated and rotated in the groove of the pulley 16, whereby the rope is moved by the frictional force to lift the load on the elevator car.

That is, the rotation of the rotor 14 is converted into a linear reciprocating motion of the elevator, and serves to transfer the heavy load of the elevator to the rotor (14).

Reference numeral 18 denotes a bracket that closes the outer ring of the bearing 12a supporting the rotation of the rotor 14 in the axial direction to prevent the detachment.

In addition, a shaft protrudes from the center of the bracket 18, and the protruding shaft extends to the rear through the through hole of the stator shaft.

Reference numeral 19 is a rotation sensor, which is inserted into the shaft of the bracket 18 serves to detect the rotation of the shaft, that is, the rotation position.

The photosensitive disk of the rotation sensor 19 rotates with the rotor 14, and the sensor body is fixed to the stator 10.

Reference numeral 20 denotes an extension type brake, which is fixed to the inner protrusion of the stator 10, expands the outer diameter of the brake to brake the rotation of the rotor 14, and attaches a friction pad to the rotor 14. Braking is achieved by close contact with

Reference numeral 21 is a cover for repair of the brake and the rotation sensor.

As such, in an elevator system without a machine room, the hoisting machine is placed on an elevator hoistway, and thus, the installation and maintenance space is restricted.

That is, depending on the direction in which the hoist is installed on the elevator hoistway, that is, in which direction the mounting part of the pulley is directed, it has a great influence on the repair or replacement of the rotation sensor.

For example, when the pulley faces the elevator car, the position of the rotation sensor is on the opposite side, so that the elevator car is forcibly fixed and the rotation sensor can be replaced and repaired only when the rope is dismantled. And dismantling ropes can be very cumbersome and time consuming.

In addition, in the structure in which the hoist is installed on the hoistway, it is a reality that the hoisting machine greatly influences the installation work such as setting the direction according to the upper and lower positions of the hoist.

Therefore, from the viewpoint of slimming and miniaturization of the hoist, it is necessary to reduce the axial length of the hoist as much as possible in order to maximize the space utilization between the hoists and improve the workability, and to improve the structure for easy replacement and maintenance of the rotation sensor. .

Accordingly, the present invention has been made in view of such a point, and its purpose is to enable repair at the front of the hoist to facilitate repair for the pulley, rotation sensor, brake, and wiring which are main repair parts of the hoist.

Another object of the present invention is to provide a one-piece auxiliary fixing device that separates the stator core to enable high-density alignment winding to realize the slimming of the hoisting machine, winding it in the form of a split core, and allowing combination fastening again. It is to provide an improved bearing fastening structure for supporting the inner ring of the bearing to improve the workability associated with the hoist assembly.

In addition, the present invention provides a new brake installation structure for installing the two brakes integrally and installed in the upper receiving space of the hoisting body, thereby reducing the overall volume of the hoisting machine and completely eliminating interference with the towing rope. In addition, according to the upper or lower installation position of the hoist, there is another object to improve the workability associated with the hoist installation, such as to eliminate the inconvenience of turning the hoisting machine upside down.

The present invention for achieving the above object is a stator for supporting the rotor at the same time having a core, a rotor supported on the stator through a bearing while having a permanent magnet opposed to the core and is mounted on the rotor In an elevator hoisting machine comprising a pulley for moving a rope, a bracket for supporting the bearing, a rotation sensor for detecting rotation of the rotor, and a brake for rotating braking of the rotor, the rotation sensor includes a stator. It is stored in the sensor seating groove formed in the hollow shaft tip of the fixed to the hollow shaft front end surface of the stator by the sensor bracket, the bracket prevents the departure of the outer ring of the bearing through the protruding jaw of the inner surface while at the same time the rotation sensor It is coupled to the front of the rotor while being combined with, the rotation sensor in front of the hoist as the bracket is separated It characterized in that a repair is to be.

In addition, the bracket is characterized in that it is provided with a plurality of holes for easily loosening the bolts that fasten the sensor bracket.

In addition, the inside of the bracket is characterized in that the auxiliary bracket for supporting the inner ring of the bearing while being fixed to the front end surface of the hollow shaft of the stator.

In addition, the auxiliary bracket is made of a thin cap shape is characterized in that it is fixed to the stator side by a bolt fastening structure.

In addition, the core is formed in the form of a circular split core combination disposed along the edge of the core bracket, is formed integrally with the core bracket and is supported by two inner and outer brackets positioned between the core brackets It is characterized by.

In addition, the brake is disposed in a recess provided in the upper part of the frame of the stator and is supported by a brake bracket fixed on the frame of the stator so that interference with the rope can be excluded regardless of the upper and lower installation positions of the hoist. It is characterized by.

In addition, the terminal box for providing power to the brake is disposed on the left and right sides of the brake, respectively, is fixed to the front of the frame of the stator, characterized in that the connection-related maintenance from the front of the hoisting machine is possible.

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

2 and 3 are a perspective view and a cross-sectional view showing a sensor installation structure in the elevator hoist of the present invention, in this case shows a structure that enables the repair of the rotation sensor in the front of the hoist.

As shown in Figure 2 and 3, the stator 10 in the form of a frame structure is installed on the hoistway of the elevator structure, the rotor 14 and the pulley 16 in the front of the stator 10 is concentric circles The rotor 14 is rotatably coupled via two bearings 12a, 12b on the shaft of the stator 10, and the pulley 16 is rotated. It is assembled integrally with) and can move the rope while rotating with the rotor (14).

Here, the driving method of the rotor 14 may adopt a method using a core and a permanent magnet.

In particular, the shaft of the stator 10 is made of a hollow shaft, the sensor seating groove 22 is formed inside the hollow shaft tip portion at this time, it is possible to insert the rotation sensor 19 therein.

Thus, by mounting the rotation sensor 19 in the sensor seating groove 22 in the stator 10, it is possible to position the rotation sensor 19 in the front of the stator 10, that is, the hoistway.

The rotation sensor 19 is of a hollow shape, and consists of a bush to which the rotation detection sensor is attached to the inner diameter and a fixed body to which the sensor bracket 23 to be described later is mounted.

The shaft 25 of the bracket 18 to be described later can be inserted into the bush, and the coupling portion at this time is embedded with a key so that the bracket 18 and the bush can be rotated together when the rotor 14 is rotated. It becomes possible.

The rotation sensor 19 is installed in a structure that is fastened and fixed to the front end surface of the hollow shaft of the stator 10 by using at least two sensor brackets 23 mounted on the fixed body, accordingly the sensor bracket ( 23) If you loosen the bolt that fastens, you can remove the rotation sensor and take repairs.

In addition, the bracket 18 has a substantially disc-shaped body, the inner surface of the shaft (25) extending at a constant length at the center and at the same time slightly protruded in the circumferential direction at the position slightly entered inward from the edge ( 24) is formed in the form.

The bracket 18 is fastened and fixed to the front center of the rotor 14, the bearing 12a, which is interposed between the rotor 14 and the stator 10 by using the protruding jaw 24 in the inside (( 12b) to prevent the departure of the outer ring.

That is, the bearing 12a, 12b serves to prevent the departure from the hollow shaft.

In addition, the shaft 25 of the bracket 18 is coupled through the rotation sensor 19 side.

Accordingly, when the rotor 14 rotates, the bracket 18 and the bush of the rotation sensor 19 rotate together, and the rotation sensor 19 can detect the rotation of the rotor 14.

In particular, the bracket 18 is formed with a plurality of holes 26 penetrating the thickness of the center portion, the bolt dismantled to the fastening portion of the rotation sensor 19 located inward through the hole 26 at this time You can work on it.

Further, inside the bracket 18, a thin cap-shaped auxiliary bracket 27 fixed to the hollow shaft tip surface of the stator 10 is positioned, and the bearings 12a and 12b are supported by the auxiliary bracket 27 at this time. The inner ring of the can be supported.

As a result, the inner and outer rings of the bearings 12a and 12b are supported by two brackets, so that the bearings 12a and 12b can be more firmly mounted, and thus, the binding relationship between the stator 10 and the rotor 14 can be maintained. Can be further strengthened.

In particular, the auxiliary bracket 27 is installed in a structure that is fixed to the stator 10 side by a bolt fastening structure rather than a nut fastening method that requires a large number of threads as before, thereby reducing the axial length of the hoisting machine. An effect can be obtained, and eventually, there is an advantage of making the hoist thinner.

Therefore, looking at the operation sequence for the repair of the rotation sensor, first loosen the bolt fastened to the sensor bracket 23 through the hole 26 of the bracket 18, the rotation sensor 19 is separated from the stator 10 If the bracket 18 on the rotor 14 is detached and then removed, the rotation sensor 19 can be detached out, so that the maintenance work of the rotation sensor can be easily performed at the front of the hoisting machine. .

Figure 4 is a front view showing the brake installation structure in the elevator hoist of the present invention, in this case, by installing the brake in the recess provided in the stator it is possible to achieve a slimmer of the hoisting machine, and to repair the connection part for driving the brake from the front of the hoist. Show the structure

As shown in FIG. 4, the recess 30 has a recessed shape formed on the upper part of the frame of the stator 10, and the brake 20 is located therein, so that a separate space for the brake is not required.

That is, the brake 20 is located above it overlapping with respect to the axial length leading from the stator 10 to the pulley 16 via the rotor 14, thereby extending the axial length at all due to the brake installation. This makes it possible to provide a structure that contributes to the slimming of the hoisting machine.

The brake 20 is installed in a structure supported on the brake bracket 31 fastened and fixed to the frame side of the stator 10 while being disposed across the recess portion 30.

In addition, the brake 20 stops or maintains the rotation of the rotor disk, and is a compact double brake that is installed on one bracket and combines two independently operated brakes. Consists of

Thus, as the brake 20 is installed in the recess 30 provided in the stator 10 in a compact structure, the overall size of the hoisting machine can be reduced, and the passage of the rope 17 is facilitated to increase the degree of freedom in installing the hoisting machine. It becomes possible.

For example, in the case of the hoist provided in the present invention, it is possible to exclude the inconvenience of turning the hoisting machine upside down according to the upper and lower installation positions of the hoistway.

To this end, by placing a compact double brake in the form of two brake combinations on the brake bracket 31 at the upper part of the hoist, i.e., the upper recess 30 of the stator 10, the rope is installed in the lower part of the hoistway. Interference can be eliminated even if the direction of (17) is upward, and the direction of the rope 17 is directed downward when installed in the upper portion, even when interference with the rope 17 can be excluded.

In addition, the hoist of the present invention has a structure capable of repairing the connection portion for the brake drive from the front.

To this end, terminal boxes 32 for motor power line connection and limit switch connection are respectively disposed on the front left and right sides of the frame front of the stator 10, and a connection terminal block is provided inside the terminal box 32 at this time.

The motor power line is drawn out through the left and right outlets, and the brake power line is drawn in through the lower inlets.

Therefore, if the bolts that fasten the cover of the left and right terminal box during the repair related to the wiring from the front, the connection related repair is possible from the front of the hoist.

Figure 6 and Figure 7 is a perspective view showing the state before and after the assembly of the split core in the elevator hoist of the present invention, here shows an example of configuring the core coupled to the stator side in a split form and using a separate bracket to support it. .

As shown in Figs. 6 and 7, the core 11 is arranged along the edge of the core bracket 28, forming a circular split core combination, and the combined split cores are divided into two brackets, namely core brackets. (28) is supported by the inner bracket (29a) and the outer bracket (29b) fixed to the stator 10 side while being coupled to the coupling.

At this time, the core bracket 28, the inner bracket (29a) and the outer bracket (29b) is more preferably formed integrally, in this case it is possible to further increase the precision.

In this way, by separating the core mounted on the stator side to enable high-density alignment winding, winding in a split core state, and combining it again using a bracket, slimming of the hoisting machine can be realized.

To this end, the divided cores having the core brackets 28 are aligned and wound to form a combination of circular divided cores, and the circular inner bracket 29a and the outer bracket 29b are core brackets for fixing and retaining them. By fastening and assembling together with (28), it is possible to complete a compact integral split core set.

At this time, the core bracket 28, the inner bracket (29a) and the outer bracket (29b) can be formed integrally as described above.

7 and 8 are perspective views showing the overall shape of the hoist installed in the upper / lower portion of the elevator hoist of the present invention.

As shown in Fig. 7 and 8, the hoist is installed in the upper and lower portions on the hoistway of the elevator structure, respectively, in this normal posture, that is, the upright position so that the brakes go upward regardless of the positions of the upper and lower parts. The installation can also eliminate interference with the rope (especially brake-related interference), which makes the hoist installation work faster and easier.

That is, the inconvenience of installing by turning the hoisting machine upside down according to the installation position of the top and bottom can be eliminated.

In addition, since both the rotation sensor and the wiring portion are located toward the front of the hoisting machine, maintenance work can be performed from the front of the hoisting machine, and thus, the overall maintenance work as well as the installation work of the hoisting machine can be performed more efficiently.

As described above, the present invention allows the rotation sensor and various wirings, which are the main repair parts, to be repaired at the front of the hoist in the hoist of an elevator system without a machine room, thereby improving the repairability in the same way as the conventional pulley and brake. .

In addition, the combination of the split cores can be made smoothly by combining the split cores that are aligned and wound by an integrated auxiliary fixing bracket for the compact stator assembly to realize the slimming, which is the most essential element in the hoist of an elevator system without a machine room. And improved precision, and the newly improved bearing fastening structure reduces the axial length and contributes to the slimming.

In addition, by improving the brake structure and the lower part of the stator in order to improve the installation in the narrow space of the elevator system without the machine room, it is possible to install in the correct position without turning the hoist in any position above and below the hoistway, the shape of the brake bracket and stator Compacting the hoisting machine by securing the storage space by the storage structure.

Claims (7)

The stator 10 has a core 11 and a stator 10 for supporting the rotor 14, and a permanent magnet 15 opposed to the core 11, through the bearings 12a and 12b. 10, a rotor 14 supported on the rotor 14, a pulley 16 mounted on the rotor 14 to move the rope 17, and a bracket for supporting the bearings 12a and 12b. In an elevator hoisting machine comprising a 18, a rotation sensor 19 for detecting rotation of the rotor 14, and a brake 20 for rotating braking of the rotor 19, The rotation sensor 19 is fixed to the hollow shaft front end surface of the stator 10 by the sensor bracket 23 while being accommodated in the sensor seating groove 22 formed in the hollow shaft front end of the stator 10. 18 prevents the outer ring of the bearings 12a, 12b through the protruding jaw 24 of the inner surface of the rotor 14, while being combined with the rotation sensor 19 through the shaft 25, the front of the rotor 14 Is coupled to, the elevator hoister, characterized in that to enable the repair of the rotation sensor in front of the hoisting machine by removing the bracket. The elevator hoisting machine as set forth in claim 1, wherein the bracket (18) is provided with a plurality of holes (26) for easily releasing the bolts fastening the sensor bracket (23). According to claim 1 or 2, Inside the bracket 18 is further provided with an auxiliary bracket (27) for supporting the inner ring of the bearing (12a, 12b) while being fixed to the hollow shaft front end surface of the stator (10) Elevator traction machine, characterized in that. The elevator hoisting machine according to claim 3, wherein the auxiliary bracket (27) has a thin cap shape and is fixed to the stator (10) side by a bolt fastening structure. 2. The core bracket of claim 1, wherein the core 11 is formed of a circular split core combination disposed along an edge of the core bracket 28, and is integrally formed with the core bracket 28. An elevator hoisting machine, which is supported by two inner and outer brackets (29a) and (29b) positioned with each other therebetween. The method of claim 1, wherein the brake 20 is installed in a structure supported by the brake bracket 31 is fixed in the frame of the stator 10 is disposed in the recess 30 provided on the upper portion of the frame of the stator 10 Elevator hoist characterized in that the interference with the rope can be excluded regardless of the upper and lower installation position of the hoist. 2. The terminal box 31 for providing power to the brake 20 is fixed to the front of the frame of the stator 10 while being disposed on the left and right sides of the brake 20. Elevator hoisting machine, characterized in that.

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