JP3230349U - Elevator hoisting machine structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure of a hoisting machine for an elevator, which prevents the output shaft of the hoisting machine from being eccentric, extends the service life of the hoisting machine, and is highly convenient for maintenance. A hoisting machine for an elevator includes a base 1 of the hoisting machine and a fixed seat 4. A motor chamber 11 is formed on the base 1. A stator 2 and a rotor 3 corresponding to each other are arranged in the motor chamber 11. An output shaft 32 is attached to the central portion of the rotor 3. A sheave 5 is mounted on the output shaft 32. A first assembly hole 121 is formed in the base 1, and the rear end of the output shaft 32 is inserted into the first assembly hole 121 of the base 1. The fixed seat 4 is located on the front side of the base 1 and is connected to the front side of the base 1. A second assembly hole 42 is formed in the fixed seat 4. The front end of the output shaft 32 is inserted into the second assembly hole 42 of the fixed seat 4. A storage section 41 is formed between the fixed seat 4 and the base 1. [Selection diagram] Fig. 2

Description

The present invention relates to the structure of the elevator hoisting machine, and in particular, prevents the output shaft of the hoisting machine from being eccentric, extends the service life of the hoisting machine, and is highly convenient for maintenance. Regarding the structure of.

In the conventional hoisting machine, the stator and rotor corresponding to each other are arranged mainly in the motor chamber of the base, the output shaft is attached to the center of the rotor, and the sheave is attached to the front end of the output shaft. A rotary encoder is attached to the rear end of the output shaft on the rear side of the base, and a wire disconnection prevention rod is provided on the front side of the base.

However, in conventional hoisting machines, the front end of the output shaft is suspended in the air and is not sufficiently supported, and when the hoisting machine operates, the weight of the basket, the balance weight, the weight of the personnel and the reaction force The radial load generated by the above acts on the output shaft via the sheave, causing a problem that the output shaft is eccentric due to the radial load, and there is a drawback that the hoisting machine is damaged early. Since the rotary encoder is mounted on the rear side of the base in the conventional hoisting machine, the distance from the rear side of the base to the wall of the elevator shaft cannot be reduced, which requires a large space and is not easy to install. When the rotary encoder broke down and had to be repaired, the rotary encoder could not be repaired or replaced without removing the entire hoisting machine and reversing the front and back of the hoisting machine. Therefore, it is inconvenient to repair or replace the rotary encoder.
Further, in the conventional hoisting machine, in order to prevent the wire from coming off, the wire is returned and position-constrained by the wire detachment prevention rod, but the wire detachment prevention rod needs to be externally attached by the motor cover, which is a process. , There was still room for improvement. In addition, if the elevator car stops due to a power failure or power off, the conventional hoisting machine manually operates the handle to move the car to the designated floor and rescue the personnel trapped in the car. Although the goods were collected, a certain amount of space was required to attach the handle, and the design of the mechanism became complicated.

The first object of the present invention is to insert the front and rear ends of the output shaft of the hoisting machine into the bearings of the base and the fixed seat, respectively, and when the hoisting machine operates, the output shaft is eccentric due to the radial load. The purpose is to provide an elevator hoist structure that prevents this from happening.
A second object of the present invention is to provide a structure of an elevator hoist in which a rotary encoder is attached to the front side of the hoist and the rotary encoder can be easily maintained and replaced.
A third object of the present invention is to provide a structure of an elevator hoist that covers the upper part of the sheave with a wire disconnection prevention rod to prevent the wire on the sheave from coming off and enhances the safety of the elevator device. It is in.
A fourth object of the present invention is to reduce the size of the stator, reduce the manufacturing time and cost of the stator, and reduce the stator by integrally winding the stator around a long silicon steel plate and forming it into a ring body. It is an object of the present invention to provide a structure of an elevator hoist that significantly increases the cross-sectional area of a coil in each winding slot, increases the amount of current per unit area, and enhances torque and power generation efficiency.
The fifth object of the present invention is that the handle adapter is screwed to the side opposite to the side where the rotary encoder of the output shaft is attached, so that the handle can be easily attached and the output shaft is manually different from the output shaft. Inspect for noise, interference, rust, etc., or rescue or collect items trapped in the elevator car when the elevator car stops due to a power outage or failure. It is to provide the structure of an elevator hoist that can.

It is a front view which shows the structure of the elevator hoist which concerns on one Embodiment of this invention. It is an exploded sectional view which shows the structure of the elevator hoist which concerns on one Embodiment of this invention. It is sectional drawing which shows the structure of the elevator hoist which concerns on one Embodiment of this invention. It is explanatory drawing which shows the state in which the stator of the structure of the elevator hoisting machine which concerns on one Embodiment of this invention is wound. It is a front view which shows the structure of the elevator hoisting machine which concerns on other embodiment of this invention. It is a front view which shows the structure of the hoist for an elevator which concerns on another embodiment of this invention. It is sectional drawing which shows the structure of the elevator hoist which concerns on other embodiment of this invention.

In order to more completely and clearly disclose the technical means of the present invention and the effects achievable thereby, the present invention will be described in detail below together with the disclosed accompanying drawings and reference numerals.

First, refer to FIGS. 1 to 3. As shown in FIGS. 1 to 3, the structure of the elevator hoist according to the embodiment of the present invention includes a base 1 of the hoist and a fixed seat 4. A motor chamber 11 is provided in the base 1. An assembly portion 12 is formed in the central portion of the bottom of the motor chamber 11. The stator 2 is fitted to the assembly portion 12. The stator 2 is integrally wound around a long silicon steel plate and formed into a ring body (see FIG. 4), and a plurality of slots are formed between the stators 2 and copper wires are formed in each slot. Coil is wound. A rotor 3 is provided in the motor chamber 11, and a plurality of magnet pieces 31 are provided on the circumferential side of the rotor 3, so that the magnet pieces 31 correspond to the stator 2 around the stator 2. Arranged. An output shaft 32 is attached to the central portion of the rotor 3. A first assembly hole 121 is formed in the assembly portion 12. At least one first bearing 13 is attached to the first assembly hole 121, and the first bearing 13 is inserted at the rear end of the output shaft 32.
The fixed seat 4 is located on the front side of the base 1 and is connected to the front side of the base 1. A storage section 41 is formed between the fixed seat 4 and the base 1, and openings are provided on both the left and right sides of the storage section 41. Formed, the fixed seat 4 has a second assembly hole 42. At least one second bearing 43 is attached to the second assembly hole 42, and the second bearing 43 is inserted into the front end of the output shaft 32. A sheave 5 is mounted on the output shaft 32, the sheave 5 is positioned in the accommodation section 41, the sheave 5 is provided at the middle position of the output shaft 32, and the front side of the fixed seat 4 is positioned in the second assembly hole 42. The rotary encoder 6 is provided, the front end of the output shaft 32 corresponds to the rotary encoder 6, and the first slot 321 is formed at the front end of the output shaft 32.
The rotary encoder 6 has a detection pin 61 correspondingly inserted and positioned, and a cover 62. In the cover 62, a fitting tank 621 is formed on the inner surface, a plurality of lock holes are formed on the peripheral side, the cover 62 is located on the front side of the fixed seat 4, and the rotary encoder 6 is covered, and the rotary encoder 6 covers the cover 62. It is fitted in the fitting tank 621 on the inner surface of 62. A second lock member 63 is inserted into each lock hole of the cover 62, and is screwed in corresponding to the lock hole formed in advance in the fixed seat 4, and the rotary encoder 6 is the second lock hole of the fixed seat 4. Positioned in the assembly hole 42.
The rear side of the base 1 is covered with a cover 14. A plurality of lock holes are provided around the peripheral side of the cover 14, and a first lock member 15 is inserted into each lock hole of the cover 14, and a lock hole provided in advance on the rear side of the base 1. The rear side of the first assembly hole 121 of the base 1 is covered with the screw, and dust, foreign matter, etc. are prevented from entering the base 1 from the rear side of the first assembly hole 121. A handle 7 is arranged on the outside of the cover 14. The handle 7 has a polygonal joint groove 71 formed in a central portion and a handle adapter 72. The handle adapter 72 is provided with a lock portion 721 at one end and a polygonal joining block 722 at the other end, and the lock portion 721 of the handle adapter 72 is formed at the center of the rear end of the output shaft 32. It is screwed into slot 322 of 2. A perforation 141 is formed in the central portion of the cover 14, and the polygonal joining block 722 of the handle adapter 72 is located outside the perforation 141 and is joined corresponding to the polygonal joining groove 71 of the handle 7.
A wire disconnection prevention rod 8 and a brake unit 9 are mounted on the fixed seat 4, and the wire detachment prevention rod 8 covers the upper part of the sheave 5. The brake unit 9 may be a drum brake 91 and includes a set of brake power sources 911 provided on the base 1. The brake power source 911 may be a solenoid valve, and has a transmission shaft 912 provided on both sides thereof and two brake arms 913, respectively. The two brake arms 913 are located in openings formed on both the left and right sides of the accommodation section 41, and the upper ends of the two brake arms 913 are combined with the transmission shaft 912 of the brake power source 911, respectively, of the two brake arms 913. The base 1 is pivotally attached to the bottom end. A first brake pad 914 is provided in each of the openings formed on the left and right sides of the accommodation section 41 on the inner surface of the two brake arms 913, and the positions of the sheaves 5 correspond to each other. An elastic assembly 915 is attached between the upper and lower ends of the brake arm 913 via the base 1.

In the hoisting machine of the present embodiment, the handle 7 is connected to the output shaft 32 by the handle adapter 72 before mounting or use (particularly when not used for a certain period of time), and the worker grasps the handle 7 by hand and handles the handle 7. The output shaft 32 is swiveled and manually inspected for abnormal noise, interference, rust, etc. on the output shaft 32. This manual inspection work may be performed when performing general inspection / maintenance, or the handle 7 may be removed after passing the inspection.
Since the hoisting machine of the present embodiment is attached to the elevator shaft of the building and the rotary encoder 6 is attached to the front side of the fixed seat 4, the rear side of the base 1 is in contact with the wall of the elevator shaft and a large space is required for attachment. Do not take. Further, when the rotary encoder 6 breaks down and needs to be repaired, the operator can directly repair or replace the rotary encoder 6 provided on the front side of the fixed seat 4, so that it is necessary to remove the entire hoisting machine. The convenience of repairing or replacing the rotary encoder 6 can be greatly enhanced by the step of reversing the hoisting machine back and forth. In addition, when the elevator car is stopped due to a power failure or power stop, the handle 7 is attached to the handle adapter 72 and the elevator car is manually moved to the designated floor to rescue the personnel trapped in the elevator car. You can do things and collect things.

When the hoisting machine of the present embodiment is actually driven, when power is supplied to the stator 2 and a rotating magnetic field is generated between the stator 2 and the rotor 3 to rotate the rotor 3, the stator 2 is integrated with the silicon steel plate. Since the stator 2 is miniaturized and molded, the waste of the material of the silicon steel plate is reduced, the manufacturing time is shortened, the height of the winding coil is reduced, and each winding of the stator 2 is formed. The cross-sectional area of the coil in the slot can be significantly increased, the winding coefficient can be increased to increase the slot occupancy of the coil, the amount of current per unit area can be increased, and the torque and power generation efficiency can be increased.

When the rotor 3 swivels the sheave 5 connected via the output shaft 32, the openings formed on both the left and right sides of the accommodation section 41 in which the sheave 5 is housed force convection when the sheave 5 turns. Is generated, the temperature rise generated by the operation of the sheave 5 and the like is suppressed, and the operation efficiency of the sheave 5 and the like is improved. Along with this, the wire a wound on the sheave 5 pulls the basket of the elevator to move up and down. At this time, the rotary encoder 6 corresponding to the front end position of the output shaft 32 detects the rotation speed of the output shaft 32, converts it to the real-time position where the elevator basket is displaced, and shifts the detection pin 61 of the rotary encoder 6 to the output shaft. By the design of inserting and positioning in combination with the first slot 321 of 32, the signal analysis degree and the signal feedback speed of the rotary encoder 6 can be increased, and the control accuracy can be improved.

When the elevator basket reaches a predetermined floor and stops operation, the brake power source 911 of the drum brake 91 is driven, and the two brake arms 913 are operated by the two transmission shafts 912 of the brake power source 911. The first brake pad 914 to which the two brake arms 913 are attached is made to enter the accommodation section 41 through the openings formed on the left and right sides of the accommodation section 41, and is brought into contact with both sides of the sheave 5, so that the sheave 5 can be turned. Stop and park the elevator basket on the desired floor.
When releasing the braking of the sheave 5, when the two brake arms 913 are repositioned by the two transmission shafts 912 of the brake power source 911, the first brake pad 914 on the two brake arms 913 comes from the contact of the sheave 5. It is released, the operation of the sheave 5 is restored, and the elevator basket goes up and down.

The output shaft 32 of the present embodiment is supported by the first bearing 13 and the second bearing 43 provided at both front and rear ends, respectively, and since the sheave 5 is located in the middle stage of the output shaft 32, the weight of the basket and the balance weight Due to the radial load generated by the weight of the personnel and the reaction force, the sheave 5 acts on the output shaft 32 to prevent the output shaft 32 from being eccentric, and the radial load acting on the output shaft 32 is applied. It is transmitted to the base 1 and the fixed seat 4 via the first bearing 13 and the second bearing 43, the radial load received by the output shaft 32 is evenly distributed, and the output shaft 32 is torn and damaged early. Prevent it from happening.
Further, in the present embodiment, a wire detachment prevention rod 8 covering the upper part of the sheave 5 is arranged to prevent the wire a on the sheave 5 from coming off, and the wire a is maintained in a state of being neatly wound on the sheave 5. The elevator basket is highly smooth and stable. Further, when the wire a comes off, the wire detachment prevention rod 8 has a function of decelerating and braking, so that danger is prevented and the safety of the elevator device is enhanced.

In addition to the drum brake 91, the brake unit 9 of the present embodiment may be a plate type brake 92 as shown in FIG. In the plate type brake 92, brake power sources 921 are mainly attached to the left and right sides of the base 1. The brake power source 921 may be a solenoid valve, and a magnetic second brake pad 922 is attached to the transmission shaft of the brake power source 921, and two magnetic second brake pads 922 are formed on the left and right sides of the accommodation section 41. It is located in each of the openings and corresponds to the position of the sheave 5. Therefore, when the two brake power sources 921 are activated, the two magnetic second brake pads 922 approach the sheave 5, and the turning of the sheave 5 is stopped by magnetism to obtain a magnetic braking effect.
6 is also referred to. As shown in FIG. 6, a disc brake 93 may be adopted as the brake unit 9 of the present embodiment. The disc brake 93 includes a set of brake power sources provided on the base 1, connects the brake pads to the brake power sources, the brake pads are located on the rear side of the base 1, and the output shaft 32 of the rotor 3 Corresponds to the rear end position. When the brake power source presses the brake pad against the rear end of the output shaft 32, the output shaft 32 stops the turning of the sheave 5. Further, if the drum brake 91 and the disc brake 93 are used in combination or the plate type brake 92 and the disc brake 93 are used in combination according to the needs of the user, a high braking efficiency with respect to the sheave 5 can be obtained.

In this embodiment, the stator 2 is fitted to the assembly portion 12 at the center of the motor chamber 11 of the base 1, and the magnet piece 31 of the rotor 3 is provided around the stator 2 to form an outer rotor. In addition to the above (see FIG. 2), as shown in FIG. 7, the rotor 3 is provided on the end face of the assembly portion 12 of the motor chamber 11, and a plurality of magnet pieces 31 are provided and fixed on the peripheral side of the rotor 3. The child 2 may be attached to the chamber wall of the motor chamber 11, and the stator 2 may be provided around the magnet piece 31 on the circumferential side of the rotor 3 to form an inner rotor. Further, in the present embodiment, the rotary encoder 6 may be selectively attached to the fixed seat 4 on the front side or the base 1 on the rear side according to the needs of the user.
When the rotary encoder 6 is attached to the rear side of the base 1, the rotary encoder 6 is attached to the first assembly hole 121 of the base 1, and the detection pin 61 of the rotary encoder 6 is attached to the second slot 322 at the rear end of the output shaft 32. After the rotary encoder 6 is covered with the cover 62, the cover 62 and the base 1 are screwed together by the lock member, and the rotary encoder 6 is placed in the first assembly hole 121 of the base 1. Position it. When the rotary encoder 6 is replaced with the rear side of the base 1, the brake power source of the disc brake 93 is attached to the fixed seat 4, and the brake pad is used to brake the front end of the output shaft 32. When the rotary encoder 6 is attached to the rear side of the base 1, the handle adapter 72 is replaced with the first slot 321 at the front end of the output shaft 32, and then the cover 14 is connected so as to cover the front side of the fixed seat 4. Here, similarly, the handle 7 is connected to the output shaft 32 via the handle adapter 72, and it is manually inspected whether or not abnormal noise, interference, rust, etc. are generated on the output shaft 32. In addition, when the elevator car is stopped, if the elevator car is moved to a designated floor by the handle 7, it is possible to rescue the personnel trapped in the elevator car and collect the objects.

As can be seen from the above, the structure of the elevator hoist of the present invention has the following advantages (1) to (11).
(1) Since the output shaft of the hoist is supported by bearings provided at the front and rear ends thereof and the sheave is provided at the middle position of the output shaft, a radial load is applied when the hoist operates. It prevents the output shaft from being eccentric and extends the service life of the hoist.
(2) The output shaft of the hoist is supported by bearings provided at its front and rear ends, and the radial load acting on the output shaft is transmitted to the base and fixed seat to which it is attached via the bearing. Since the radial load received by the output shaft is evenly distributed, it is possible to prevent the output shaft from being torn or damaged prematurely.
(3) Since the rotary encoder is provided on the front side of the hoisting machine, if the rotary encoder breaks down and needs to be repaired, does the worker directly repair the rotary encoder provided on the front side of the hoisting machine? Since it can be replaced, it is not necessary to remove the entire hoisting machine and flip the hoisting machine back and forth, which is highly convenient for repairing and replacing the rotary encoder.
(4) Since the rotary encoder is provided on the front side of the hoisting machine, it is possible to prevent the rotary encoder from protruding from the rear side of the base and directly contacting the rear side of the base of the hoisting machine with the wall of the elevator shaft. , It is convenient to install the hoisting machine because it does not require a large space when installing the hoisting machine.
(5) By covering the upper part of the sheave with a wire detachment prevention rod, it is possible to prevent the wire on the sheave from coming off, and when the wire is about to come off, the wire detachment prevention rod has a deceleration / braking function. It is possible to prevent the occurrence of danger and increase the safety of the elevator device.
(6) Since the stator is integrally wound around the silicon steel plate and formed, the step of laminating a large number of silicon steel plates is not required, the manufacturing time is significantly shortened, and a large number of silicon steel plates are pressed. The material is not wasted during molding, and a large number of silicon steel plates are prevented from being deformed or burred by the pressing process so that the volume after lamination becomes too large, and the stator is miniaturized. Therefore, the cross-sectional area of the coil in each winding slot of the stator increases relatively significantly, the slot occupancy rate and winding coefficient of the coil are increased, the amount of current per unit area is increased, and the torque and power generation efficiency are improved. Can be enhanced.
(7) Due to the openings formed on both the left and right sides of the accommodation section formed between the base and the fixed seat, a convection effect is forcibly generated when the sheave turns, and the temperature rise caused by the operation of the sheave etc. is suppressed. , Sheaves, etc. can be improved in operation efficiency.
(8) By inserting the detection pin of the rotary encoder into the slot formed at the end of the output shaft of the rotor, the signal resolution and signal feedback speed of the rotary encoder can be increased and the control accuracy can be improved. ..
(9) It can be applied to various brakes such as drum brakes, plate brakes, and disc brakes, and depending on the needs of the user, either drum brakes and disc brakes can be used in combination, or plate brakes and disc brakes can be used. When used in combination, the braking efficiency for sheaves can be improved.
(10) Since the rotary encoder is positioned by the cover, when the rotary encoder is selectively mounted on the front fixed seat or the rear base and the mounting position of the rotary encoder is changed according to the user's needs. When the cover is released from the fixed seat or the base, the rotary encoder can be removed and mounted at a desired position, so that the rotary encoder can be easily mounted and replaced.
(11) Since the handle adapter is screwed to the side opposite to the side where the rotary encoder of the output shaft is attached, the handle can be easily attached, and the output shaft is manually swiveled by the handle to rotate the output shaft. Whether to inspect whether there is any abnormal noise, interference, rust, etc., or to rescue the personnel trapped in the elevator basket by the steering wheel when the elevator basket is stopped due to a power failure or power stop. You can collect things.

1 Base 2 Fixture 3 Rotator 4 Fixed seat 5 Sheave 6 Rotary encoder 7 Handle 8 Wire disconnection prevention rod 9 Brake unit 11 Motor chamber 12 Assembly part 13 First bearing 14 Cover 15 First lock member 31 Magnet piece 32 Output Shaft 41 Accommodation section 42 Second assembly hole 43 Second bearing 61 Detection pin 62 Cover 63 Second lock member 71 Joint groove 72 Handle adapter 91 Drum brake 92 Plate type brake 93 Disc brake 121 First assembly hole 141 Perforation 321 First slot 322 Second slot 621 Fitting tank 721 Lock part 722 Joint block 911 Brake power source 912 Transmission shaft 913 Brake arm 914 First brake pad 915 Elastic assembly 921 Brake power source 922 Second brake pad a Wire

Claims (3)

It is the structure of an elevator hoist with a hoist base and a fixed seat.
A motor chamber is formed on the base.
In the motor chamber, stators and rotors corresponding to each other are arranged.
An output shaft is attached to the central portion of the rotor, a sheave is attached to the output shaft, a first assembly hole is formed in the base, and the first assembly hole of the base is formed. The rear end of the output shaft is inserted into the
The fixed seat is located on the front side of the base and is connected to the front side of the base, a second assembly hole is formed in the fixed seat, and the second assembly hole of the fixed seat is formed in the second assembly hole. The front end of the output shaft is inserted, a housing section is formed between the fixed seat and the base, openings are formed on both the left and right sides of the housing section, and the sheave is formed in the housing section. It is located and the sheave is arranged at the middle position of the output shaft.
Elevator hoist structure. The structure of an elevator hoist according to claim 1, wherein a wire disconnection prevention rod is attached on the fixed seat, and the upper part of the sheave is covered by the wire disconnection prevention rod. The structure of an elevator hoist according to claim 1, wherein the stator is integrally wound around a long silicon steel plate and formed into a ring body.