JP5216797B2 - Hoisting machine - Google Patents

Abstract

The invention aims at providing a small winch with excellent maintaining performance and a piece of elevator equipment capable of being effectively arranged and saving space. The winch (4) comprises a braked body (8), a brake device (9) and a motor frame (10), wherein a brake component (11) is pressed on the peripheral part (8a) of the braked body (8) through the brake device (9) so as to execute brake; a bearing component (17) with reacting force consists of the motor frame (10) so that the bearing component (17) with reacting force bears the friction force caused by the rotated braked body (8) when the brake component (11) presses the braked body (8).

Description

  The present invention relates to a hoisting machine and an elevator apparatus using the same.

  As a brake for a hoisting machine, a brake device of a type in which a brake member is pressed against a cylindrical braked body outer periphery that rotates in synchronization with the hoisting machine to perform braking is known. This type of brake device acts to stop the rotation of the braked body by pressing a braking member against the braked body, thereby braking the hoist (see, for example, Patent Document 1).

  In addition to the force pressed against the braked body during braking, the braking member pressed against the braked body generates a frictional force that tries to rotate together in the direction of rotation because the braked body rotates. This frictional force is very large, but in order to stop the rotation of the braked body, it is necessary to keep pressing the braking body against the braked body against this frictional force. It is configured to have a strength sufficient to bear this frictional force.

  In order to bear such a large frictional force, there has also been proposed a brake device or the like in which a guide portion that suppresses movement of the braking member in the rotation direction of the braked body is attached to the brake device body (see, for example, Patent Document 2).

JP 59-144835 A JP 2006-161920 A

  However, in the above prior art, the brake device itself secures the strength that can withstand the frictional force in the rotating direction of the braked body, so that the brake body is enlarged and the hoisting machine to which the brake is attached is also enlarged. There has been a problem that it is difficult to reduce the size of the entire hoisting machine.

  Further, when such a hoisting machine is installed in the hoistway, there is a problem that an extra space is required in the hoistway, and it is difficult to save space efficiently.

  Further, in the technique of Patent Document 2, since the brake shoe that needs to be inspected and replaced is located in the guide portion, when the brake member is inspected and replaced, the brake body can be removed from the installation portion or in some cases The main body had to be disassembled, and maintenance was required to be improved.

  An object of this invention is to provide the winding machine which can respond to size reduction and was excellent in maintainability.

  It is another object of the present invention to provide an elevator apparatus capable of efficient layout and space saving.

The present invention has been made in view of the above problems,
In a hoisting machine including a braked body, a brake device that presses and brakes a braking member on an outer peripheral portion of the braked body, and a motor frame,
When the braking member presses the braked body, a reaction force receiving member that bears a frictional force due to the rotation of the braked body is configured by a motor frame ,
The braking member is configured to operate in a radial direction of the braked body to press the braked body, and the reaction force receiving member is provided with a gap between both ends of the braking member in the rotation direction of the braked body. The reaction force receiving member is opposed to the brake member by friction with the braked body when the brake member presses the braked body. Moving in the rotational direction of the braking body, the end side surface of the braking member is in contact with the reaction force receiving member, the reaction force receiving member bears the frictional force due to the rotation of the braked body,
Between the opposing reaction force receiving members, a notch portion having a size that allows the braking member to be taken in and out in a direction parallel to the rotation axis of the braked body,
The opposing reaction force receiving member is provided with a reinforcing portion connected at both ends thereof, and the reinforcing portion is configured such that the braking member in a state separated from the braked body is parallel to the rotation axis of the braked body. It is provided at a position where it can be taken in and out in the direction .

  According to the hoisting machine of the present invention, it is possible to cope with downsizing and to make the hoisting machine excellent in maintainability.

  Further, according to the elevator apparatus of the present invention, it is possible to provide an elevator apparatus capable of efficient layout and space saving.

It is a perspective view which shows the whole structure of the elevator apparatus with which the winding machine of this invention was applied. It is the layout of the hoistway cross section seen from the perpendicular direction upper direction of the elevator apparatus with which the winding machine of this invention was applied. It is a front view of the winding machine which shows one Example of this invention. It is a front principal part enlarged view of the winding machine brake part which shows one Example of this invention. It is a principal part enlarged view for brake partial operation | movement description immediately after a braking member contacts a to-be-brake part. It is a principal part enlarged view for brake partial operation | movement description which shows the state by which the braking member was supported by the reaction force receiving member. It is a principal part enlarged view which shows the other Example of this invention.

  Hereinafter, the present invention will be described by taking an embodiment of the present invention as an example.

FIG. 1 is a perspective view showing the overall configuration of an elevator apparatus to which the hoisting machine of the present invention is applied.
In the figure, an elevator apparatus 30 includes a main rope 3 and a main rope 3, which are ropes for suspending a passenger car 1 and a counterweight 2 that move up and down in a hoistway 22, and a passenger car 1 and a counterweight 2. A winding machine 4 is provided. The car 1 and the counterweight 2 are moved up and down in the hoistway when the main rope 3 wound around the drive sheave 5 is driven by the hoisting machine 4.

  FIG. 2 is a layout diagram of a hoistway cross section as viewed from above in the vertical direction of an elevator apparatus to which the hoisting machine of the present invention is applied. The hoisting machine 4 is a thin type installed in parallel along one wall surface in the hoistway 22, and is disposed inside the hoistway 22. The hoisting machine 4 includes a driving sheave 5 around which the main rope 3 is wound, a motor 6 that rotates the driving sheave 5, and a braking means 7 that brakes the rotation of the driving sheave 5. The thin type hoisting machine means a hoisting machine of a type whose size in the thickness direction is smaller than its width.

  FIG. 3 is a front view of an elevator hoist according to an embodiment of the present invention. The braking means 7 has a braked body 8 that is rotated integrally with a rotation shaft of the drive sheave 5 and a motor 6 that has the same rotation axis, and a brake device 9 that brakes the rotation of the braked body 8. In the present embodiment, a cylindrical brake drum having a smaller thickness than the diameter is used as the brake target 8. A pair of brake devices 9 are provided on the upper and lower sides of the brake device 9 so as to face the outer circumferential surface of the braked body 8, and are attached to the motor frame 10. The motor frame 10 is provided around the rotor of the motor and plays a role of reinforcing the strength of the motor.

  FIG. 4 is an enlarged view of the main part of the front part of the hoisting machine brake portion showing an embodiment of the present invention. The brake device 9 includes a rod 12, a movable iron core 13, a braking member 11, a brake spring 14, and an electromagnetic magnet 15. The electromagnetic magnet 15 has a brake coil (electromagnetic coil) 16.

  The rod 12 is joined to the movable iron core 13. The braking member 11 is attached to the tip 12 a side of the rod 12. The brake spring 14 presses the movable iron core 13, and as a result, the brake member 11 is pressed against the outer peripheral portion 8 a of the braked body 8 via the rod 12 to which the movable iron core 13 is attached.

  By passing a current through the brake coil 16, the electromagnetic magnet 15 is excited to generate an electromagnetic force for releasing the braking force of the brake device 9, and the braking member resists the pressing force generated by the spring force of the brake spring 14. 11 is separated from the body 8 to be braked. Also, by energizing the brake coil 16, the excitation of the electromagnetic magnet 15 is released, and the braking member 11 is pressed against the braked body 8 by the spring force of the brake spring 14. Thus, the braking member 11 is configured to operate in the radial direction of the braked body 8 to press the braked body 8, and can be brought into and out of contact with the outer peripheral portion 8 a of the braked body 8 by the operation of the rod 12. It is configured. At this time, both the pressing force of the braking member 11 acting on the outer peripheral portion 8a of the braked body 8 and the force for releasing the pressing force are directly transmitted by the rod 12 without using a reduction mechanism such as a lever. In addition, since the pressing force decelerating and transmitting mechanism is unnecessary, the structure of the brake device 9 can be reduced by reducing the number of parts.

  Here, in FIG. 4, the motor frame 10 is provided with an integrated guide 17 so as to protrude from the installation portion of the brake device 9. The guide 17 rotates in the direction in which the braked body 8 rotates, that is, the braked body 8 rotates clockwise or counterclockwise in FIG. There are slight gaps at both ends, and the brake members 11 are sandwiched between the two. Further, in the present embodiment, the notch portion 23 for the purpose of enabling the braking member 11 to be attached / detached / removed in the axial direction of the hoisting machine while the brake device 9 is installed between the opposing guides 17 has the motor frame. The size of the brake member 11 is such that the brake member 11 can be attached to and removed from the rotary shaft.

  FIG. 5 is an enlarged view of a main part for explaining the operation of the brake part immediately after the braking member comes into contact with the braked part, and FIG. 6 is a main part for explaining the operation of the brake part showing a state in which the braking member is supported by the reaction force receiving member. It is an enlarged view. Subsequently, the operation of the elevator hoisting machine brake portion according to one embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 4, the state where the braking member 11 is separated from the braked body 8 and the guide until the excitation of the electromagnetic magnet 15 is released and the braking member 11 contacts the outer peripheral portion 8 a of the braked body 8. In a state where the distance between the brake members 11 is moved in the radial direction of the braked body 8, no force acts between the brake member 11 and the guide 17. Thus, a slight gap is provided between both ends of the guide 17 and the braking member 11 in the rotational direction of the brake target body 8, and the guide 17 and the braking member 11 are moved when the braking member 11 is operated. It is the structure which can suppress that friction generate | occur | produces between.

  Then, as shown in FIG. 5, when the braking member 11 comes into contact with and presses against the outer peripheral portion 8a of the braked body 8, the braked body 8 is rotated, so that the braking member 11 is driven by the frictional force. In the example shown in FIG. 5 on the rotational direction side of the brake body 8, a force that can be moved toward the right is received.

  The braking member 11 that has received a force in the rotational direction of the braked body 8 due to the frictional force is configured such that the braking member 11 is slightly movable in the rotational direction of the braked body 8 in this embodiment. By moving in the rotational direction of the brake body 8, the braking member 11 comes into contact with the guide 17 positioned on the rotational direction side of the braked body 8 as shown in FIG. 6, and the braking member 11 rotates in the rotational direction of the braked body 8. The movement to move to the side is suppressed by the guide 17 and the frictional force due to the rotation of the braked body 8 applied to the braking member 11 is borne. That is, the guide 17 forms a reaction force receiving member that bears a frictional force due to the rotation of the braked body 8 applied to the braking member 11.

  In this embodiment, as shown in FIGS. 5 and 6, the braking member 11 is provided with a spherical seat 18 at a joint portion with the rod 12 and provided between the shoe 20 on which the friction material 19 is installed. It has a structure that can be moved minutely by the formed gap. When the braking member 11 contacts the outer peripheral surface 8a of the braked body 8 and receives a force on the rotational direction side of the braked body 8 due to a frictional force, the relative positions of the spherical seat 18 and the shoe 20 change. Thus, the braking member 11 is configured to be able to move slightly in the rotational direction of the braked body 8.

  In the above description, the case where the rotation direction of the braked body 8 is clockwise is described. However, the braked body 8 may rotate counterclockwise. In such a case, the braking member 11 is braked. When coming into contact with the outer peripheral portion 8a of the body 8, the braking member 11 receives a force that can be moved toward the left. Then, the braking member 11 slightly moved to the left by the frictional force comes into contact with the guide 17 located on the left side of the braking member 11 shown in FIG. 5, and the braking member 11 tries to move toward the rotational direction side of the braked body 8. The movement which performs is suppressed by the guide 17, and the frictional force by rotation of the to-be-brake body 8 applied to the braking member 11 is borne.

  The present invention is not limited to the above-described embodiment, and the design can be changed without departing from the gist of the present invention. For example, in the present embodiment, the motor 6 and the braked body 8 are integrated, but the motor 6 and the braked body 8 may be separately installed. It is also possible to adopt a structure in which the braking force of the brake device 9 is transmitted to the braked body 8 via a speed reduction mechanism such as a lever. Further, the present invention is not limited to the thin type hoisting machine installed in the hoistway 22, but can be applied to the hoisting machine installed in the machine room, and the number of brake devices 9 installed is 2 as in this embodiment. The number can be increased or decreased instead of one.

  In the above description, the guide 17 has a structure separated on both sides of the braking member 11, but the guide 17 does not have to be completely separated, and a structure in which a part is connected by a reinforcing portion, As shown in FIG. 7, a structure may be adopted in which window-shaped notches 21 are provided by connecting the opposing guides 17 with a reinforcing portion 24.

  As described above, in the hoist according to the present invention, the brake device 9 is disposed on the motor frame 10 so as to face the outer peripheral portion of the braked body 8, and the reaction force receiving member integrated with the motor frame 10. By providing the guide 17, the guide 17 has a function of suppressing the braking member 11 of the brake device 9 from moving toward the rotational direction of the braked body 8. The friction reaction force generated on the direction side is borne not by the rod 12 but by the guide 17. Therefore, compared with the conventional hoisting machine having a structure in which the brake body bears the frictional reaction force generated in the rotation direction of the braked body 8 during braking, the brake device 9 itself has friction in the rotation direction of the braked body 8. Since it is not necessary to secure the strength that can withstand the force, the load on the brake body can be reduced, so that significant downsizing can be realized, and the entire hoisting machine can be saved in space.

  Further, by integrating the guide 17 with the motor frame 10, a guide effect can be obtained without adding new parts to the brake device 9. Therefore, the number of parts can be increased compared to the case where the reaction force receiving parts are separately attached. Can be reduced.

  Further, by providing the motor frame 10 with a notch 23, a window-like notch 21, etc. for the purpose of making the brake member 11 detachable in the hoisting machine axial direction, The brake member 11 can be attached and detached without removing the brake device 9 from the motor frame 10 at the time of replacement. Moreover, since it is also possible to check the worn state of the braking member 11 with the brake device 9 installed, the hoisting machine excellent in maintainability can be obtained.

  In addition, a slight gap is provided between both ends of the guide 17 and the braking member 11 in the rotational direction of the braked body 8, and the guide 17 and the braking member 11 are moved when the braking member 11 is operated. Since no friction is generated, there is no possibility that the braking and braking operation of the brake device 9 is hindered or the braking member 11 is worn by friction between the braking member 11 and the guide 17. Therefore, also from such a point, the frequency of maintenance can be reduced and the maintainability can be improved.

  Furthermore, according to the elevator using the hoist as described above, it is possible to provide an elevator device capable of efficient layout and space saving.

  Further, in the hoisting machine 4 in the present embodiment, a pair of brake devices 9 are provided on the upper and lower sides so as to face the outer circumferential surface of the braked body 8. When installing the hoisting machine 4 in the hoistway, the hoistway is vertically long, so the size in the horizontal direction is very limited, but there is a relative margin in the vertical direction. Therefore, the configuration including a pair of brake devices 9 on the upper and lower sides of the hoisting machine 4 contributes to a more efficient layout and space saving.

  Such a hoisting machine 4 is arranged not in the machine room but in the hoistway 22, so that the hoisting machine can sufficiently exhibit the maintenance performance and is sufficient for efficient layout and space saving. Can contribute greatly to the performance of the entire elevator apparatus.

DESCRIPTION OF SYMBOLS 1 Riding car 2 Counterweight 3 Main rope 4 Hoisting machine 5 Drive sheave 6 Motor 7 Braking means 8 Brake body 9 Brake device 10 Motor frame 11 Braking member 12 Rod 13 Movable iron core 14 Brake spring 15 Electromagnetic magnet 16 Brake coil (electromagnetic) coil)
17 Reaction force receiving member (guide)
18 Spherical seat 19 Friction material 20 Shoe 21 Window-shaped notch 22 Hoistway 23 Notch 24 Reinforcement 30 Elevator device

Claims (1)

In a hoisting machine including a braked body, a brake device that presses and brakes a braking member on an outer peripheral portion of the braked body, and a motor frame,
When the braking member presses the braked body, a reaction force receiving member that bears a frictional force due to the rotation of the braked body is configured by a motor frame ,
The braking member is configured to operate in a radial direction of the braked body to press the braked body, and the reaction force receiving member is provided with a gap between both ends of the braking member in the rotation direction of the braked body. The reaction force receiving member is opposed to the brake member by friction with the braked body when the brake member presses the braked body. Moving in the rotational direction of the braking body, the end side surface of the braking member is in contact with the reaction force receiving member, the reaction force receiving member bears the frictional force due to the rotation of the braked body,
Between the opposing reaction force receiving members, a notch portion having a size that allows the braking member to be taken in and out in a direction parallel to the rotation axis of the braked body,
The opposing reaction force receiving member is provided with a reinforcing portion connected at both ends thereof, and the reinforcing portion is configured such that the braking member in a state separated from the braked body is parallel to the rotation axis of the braked body. The hoisting machine is provided at a position where it can be taken in and out in the direction .

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