CN206827878U - A kind of decelerator on elevator traction machine - Google Patents

Abstract

The utility model provides a reducer on an elevator traction machine, which belongs to the technical field of motors. It solves the technical problems such as poor stability of the existing motor reducer. A reducer on an elevator traction machine, the elevator traction machine includes a motor, a casing and a rotating shaft on the motor, the rotating shaft has a control end and an output end protruding from the casing, the reducer includes a main gear fixedly arranged on the output end, Side plate 1 located inside the main gear and side plate 2 located outside the main gear. There are several planetary gears meshing with the main gear between side plate 1 and side plate 2. This reducer also includes a gear with an inner ring gear. The output gear is engaged with each planetary gear, and an output shaft is fixedly arranged on the output gear. The utility model has the advantages of good stability, high reduction ratio, simple structure and the like.

Description

A reducer on an elevator traction machine

technical field

The utility model belongs to the technical field of motors and relates to a speed reducer on an elevator traction machine.

Background technique

The elevator traction machine is the power equipment of the elevator, also known as the elevator host. The function is to convey and transmit power to make the elevator run, control the elevator car to stop, etc. It is composed of motor, brake, coupling, reduction box, traction wheel, frame, guide wheel and auxiliary turning hand wheel. The guide wheels are generally installed on the frame or the load-bearing beam under the frame. Some of the turning hand wheels are fixed on the motor shaft, and some are usually hung on the nearby wall, and then set on the motor shaft when in use.

The existing elevator traction machine has the following problems: 1. The brake of the traditional elevator traction machine is electronically controlled, and the traction machine is located between the elevator car and the wall, and there is a lot of dust and debris, especially when it falls from the elevator door. 2. The brake of the traditional elevator traction machine has no passive safety device. When abnormal conditions such as power failure occur, the elevator car is in danger of falling; 3. The traditional elevator traction The brakes of the machine are used to brake the decelerated rotating shaft to achieve overall braking. The decelerated rotating shaft has a smaller speed and the braking effect is more obvious. However, when the decelerating end of the rotating shaft is braked, the impact on the reduction box is relatively large. , the damage and impact on the coupling is greater; 4. The coupling of the traditional elevator traction machine generally does not have a buffer function. Even if some couplings have a buffer function, the buffer cannot be buffered according to the actual situation of the elevator, that is, , when the elevator stops up and down, the impact force is different. The impact force of the down stop is relatively large, and it is not easy to avoid. The impact force of the down stop is small, but rebound is not allowed. If there is rebound, give Passengers have a stronger sense of weightlessness, which leads to discomfort when taking the elevator; 5. The reducer structure of the traditional elevator traction machine is complex, and it is generally realized by bevel gears. The reduction ratio is obtained through multiple reductions, sacrificing part of the transmission stability.

Contents of the invention

The purpose of the utility model is to provide a reducer on the elevator traction machine aiming at the above-mentioned problems existing in the existing technology. The technical problem to be solved by the utility model is to decelerate the motor with a stable and high reduction ratio.

The purpose of this utility model can be achieved through the following technical solutions: a reducer on an elevator traction machine, the elevator traction machine includes a motor, a casing and a rotating shaft are provided on the motor, and it is characterized in that the rotating shaft has a structure protruding from the casing The control end and the output end of the reducer include the main gear on the output end, the side plate one located inside the main gear and the side plate two located outside the main gear, the side plate one and the side plate two Several planetary gears meshed with the main gear are provided, and the speed reducer also includes an output gear with an inner ring gear, the output gear meshes with each planetary gear, and an output shaft is fixedly arranged on the output gear.

The planetary gear is transmitted through the main gear to reduce the speed of the rotating shaft and then transmitted to the output shaft. This reducer clamps the main gear and the planetary gear through the side plate 1, side plate 2 and the output gear to improve the transmission stability and has a simple structure. Reliable, relatively large deceleration.

In the above-mentioned reducer on the elevator traction machine, the side plate 1 is connected to the output end through a bearing.

In the above-mentioned reducer on the elevator traction machine, the first side plate and the second side plate are connected to the output gear through bearings. The components are tightly connected, and the stability and sealing performance are greatly improved.

Compared with the prior art, the utility model has the following advantages:

1. The planetary gear is transmitted through the main gear, the speed of the rotating shaft is reduced, and then transmitted to the output shaft. This reducer clamps the main gear and the planetary gear through the side plate 1, side plate 2 and the output gear to improve the transmission stability, and The structure is simple and reliable, and the deceleration is relatively large.

2. The first side plate and the second side plate are connected to the output gear through bearings, and the components are tightly connected, and the stability and sealing performance are greatly improved.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the traction machine.

Fig. 2 is a cross-sectional view along the direction A in Fig. 1 .

Fig. 3 is a cross-sectional view along direction B in Fig. 1 .

Fig. 4 is a cross-sectional view along direction C in Fig. 1 .

Fig. 5 is a cross-sectional view along the direction D in Fig. 1 .

Fig. 6 is a schematic diagram of the circuit principle of the power generating device, the brake and the coil.

Fig. 7 is an enlarged view of part of the structure in Fig. 1 .

In the figure, 11, motor; 12, casing; 13, rotating shaft; 14, control end; 15, output end; 21, brake disc one; 22, speed limiting box; 221, sliding cavity; 222, guide cavity; 23 , counterweight spool; 24, spool; 25, brake disc; 26, reed; 27, pressure plate; 28, pressure regulating bolt; 31, main gear; 32, side plate one; 33, side plate two; 34 , planetary gear; 35, output gear; 36, output shaft; 41, turntable; 42, chute; 43, brake disc two; 44, cylinder; 45, controller; 46, varistor; 47, insertion end; 48, protrusion; 51, rotor; 52, permanent magnet stator; 53, shell; 54, coil; 61, inner shaft sleeve; 62, limit block one; 63, insert one; 64, insert two; 65, 66, limit block two; 67, jack one; 68, jack two; 69, escape hole; 71, energy-absorbing sheet; 72, buffer spring.

detailed description

The following are specific embodiments of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model is not limited to these embodiments.

As shown in Figure 1, Figure 2 and Figure 3, the elevator traction machine includes a motor 11, a casing 12 and a rotating shaft 13 are arranged on the motor 11, a speed reducer and a brake are arranged between the casing 12 and the rotating shaft 13, and the rotating shaft 13 has Stretch out the control terminal 14 and output terminal 15 of casing 12, be provided with passive safety device on the output terminal 15, passive safety device comprises the brake disc-21 that is fixed on the casing 12 and the speed limiting box that is fixed on the rotating shaft 13 22. A number of sliding chambers 221 are evenly arranged in the speed limiting box 22, and a slidable counterweight valve core 23 is arranged in each sliding chamber 221, and a guide chamber corresponding to the sliding chambers 221 is also arranged in the casing 12 222, the slide chamber 221 communicates with the corresponding guide chamber 222, the guide chamber 222 is slidingly connected with a valve column 24, the valve column 24 is connected with a brake pad 25, the guide chamber 222 and the slide chamber 221 are filled with hydraulic oil; the elevator The linear speed of the wire rope pulled by the traction machine needs to be controlled evenly. If the speed is too high, the counterweight spool 23 squeezes the hydraulic oil in the sliding chamber 221 to move the spool 24 downward, and the spool 24 pushes the brake pad 25 to contact with the brake pad. The contact of the moving disc 1 21 causes the linear velocity of the steel wire rope to decrease until the centrifugal force of the counterweight spool 23 is not enough to push the brake pad 25 to contact the brake disc 1 21, and the linear velocity of the steel wire rope is controlled at a certain set value , when the elevator control circuit or power failure, the elevator car can descend at a steady speed, and there is no situation of falling down; the hydraulic oil can improve the rotation stability of the rotating shaft 13 .

The sliding cavity 221 is provided with a reed 26 and a pressure plate 27, the reed 26 is placed between the counterweight spool 23 and the pressure plate 27, and the speed limiting box 22 is provided with a pressure regulating bolt 28 that can lean against the pressure plate 27; the pressure plate 27 and the reed 26 can adjust the pressure of the counterweight spool 23 to compress the sliding chamber 221, and the compression degree of the reed 26 can be changed by adjusting the pressure regulating bolt 28, thereby adjusting the speed limit standard of the traction machine.

As shown in Figures 1 and 4, the speed reducer includes a main gear 31 fixedly arranged on the output end 15, a side plate one 32 positioned inside the main gear 31 and a side plate two 33 positioned outside the main gear 31, side plates one 32 and A number of planetary gears 34 meshing with the main gear 31 are arranged between the side plates 2 33. This reducer also includes an output gear 35 with an inner ring gear, the output gear 35 meshes with each planetary gear 34, and the output gear 35 is fixed An output shaft 36 is provided; the planetary gear 34 is transmitted through the main gear 31, the rotating speed of the rotating shaft 13 is reduced, and then transmitted to the output shaft 36. It is clamped with the planetary gear 34 to improve transmission stability, and the structure is simple and reliable, and the reduction ratio is relatively large.

As shown in Figures 1 and 7, the brake includes a turntable 41 connected to the control end 14 through a spline, and two annular chute 42 is opened on the turntable 41, and the casing 12 is provided with corresponding to the two chute 42. Brake disc two 43, the brake disc two 43 can be inserted in the corresponding chute 42, a number of cylinders 44 are arranged between the two chute 42, and the push rods of the cylinders 44 are connected to the rotating disk 41 through plane bearings; The second brake disc 43 can be in contact with the rotating disc 41 after being pulled, so as to realize deceleration and braking through friction.

Cylinder 44 is connected with a controller 45, and controller 45 is connected in series with a piezoresistor 46; This structure increases the area of friction force, improves the braking strength, and can realize instant stop.

The bottom of the chute 42 is provided with some protrusions 48; the protrusions 48 are made of rubber material; the protrusions 48 made of rubber material can ensure the accuracy of stopping without slipping; the protrusions 48 are paired with it The contacted brake disc disc 2 has a certain buffering effect. Under the premise of precise stop, it can weaken the impact as much as possible and avoid damage to parts. Since the brake is set at the control end 14, its speed is high and the torque is small. Through friction and flexible limit, it can brake quickly and accurately.

As shown in Figure 6, wherein, S1 is an auxiliary switch controlling the circuit where the piezoresistor 46 is located, which is used for emergency or opening or closing the function of controlling the speed through voltage, and S2 is the main circuit switch controlling the cylinder 44, and the control terminal 14 is set There is a generator, the generator includes rotor 51, permanent magnet stator 52 and casing 53, permanent magnet stator 52 is fixed on the casing 53, rotor 51 is fixed on the control end 14, is wound with coil 54 on the rotor 51; , to detect the rotational speed of the rotating shaft 13 of the traction machine, the faster the rotational speed of the rotating shaft 13, the greater the voltage generated at both ends of the coil 54, the signal is used to limit the speed of the rotating shaft 13; the coil 54 is connected in series with the piezoresistor 46; The sensitive resistor 46 is in a high-resistance state within a specific voltage range, and the controller 45 cannot be triggered. When the voltage reaches the predetermined value of the piezoresistor 46, the circuit is connected, and the voltage at both ends of the coil 54 can trigger the controller 45 to perform an operation on the cylinder 44. action, the cylinder 44 is pulled back, so that the second brake disc 43 rubs against the rotary disc 41, and the rotating shaft 13 is decelerated until the rotating speed is lower than the rotating speed of the piezoresistor 46, so repeated, it can be used when the elevator fails or the power is cut off. Finally, the down speed of the elevator is controlled to prevent the elevator from falling.

As shown in Fig. 1 and Fig. 5, a shaft coupling is arranged on the output shaft 36, and the shaft coupling includes an inner shaft sleeve 61 fixedly arranged on the output shaft 36, and the inner shaft sleeve 61 has a limit block 1 62, the position limit Block 1 62 is provided with arc-shaped insertion piece 1 63 and insertion piece 2 64 on one side of limit block 62, and the shaft coupling also includes an outer shaft sleeve 65 sleeved on the inner shaft sleeve 61. There is a limit block two 66 in the cover 65, and the limit block two 66 is provided with a jack one 67 corresponding to the insert one 63 and a jack two 68 corresponding to the insert two 64, the jack one 67 and the jack two There are several avoidance holes 69 on the outer bushing 65 between 68, and the coupling also includes a corrugated energy-absorbing piece 71, which is inserted in the avoidance hole 69, and part of the energy-absorbing piece 71 is inserted into the In the hole one 67 and the jack two 68, the other side of the limit block one 62 is fixedly connected with a buffer spring 72, and the two ends of the buffer spring 72 are fixedly connected with the limit block one 62 and the limit block two 66 respectively; The output shaft 36 is connected with the wire rope puller. When the elevator car goes up to a certain floor and stops, the outer bushing 65 and the inner bushing 61 squeeze the buffer spring 72. The buffer spring 72 is a steel leaf spring with a relatively Large rigidity, little cushioning effect, precise stop position of the elevator car; when the elevator car goes down to a certain floor and stops, the first insert 63 and the second insert 64 on the inner shaft sleeve 61 are inserted into the first jack 67 and the second insert respectively. In the socket 2 68, the energy-absorbing sheet 71 acts as a buffer for the first 63 and second 64, and can absorb the impact energy through friction and deformation of the energy-absorbing spring. Moreover, the first insert 63 and the second insert 64 are subjected to the clamping force of the energy-absorbing spring, so they are not easily pulled out, so that the rebound impact between the inner sleeve 61 and the outer sleeve 65 is relatively small, that is to say When the elevator car goes down, there is less vibration and shaking.

As another option, a control device capable of pushing the counterweight spool 23 to move to the outside of the slide cavity 221 is provided in the sliding chamber 221. The control device includes a hydraulic cylinder, and the push rod of the hydraulic cylinder is fixedly connected with the counterweight spool 23. . The hydraulic cylinder is controlled by a control valve, which is controlled by an external circuit and can assist the brake to perform braking.

The specific embodiments described herein are only examples to illustrate the spirit of the present invention. Those skilled in the technical field to which the utility model belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the utility model or go beyond the appended claims defined range.

Claims (3)

1. the decelerator on a kind of elevator traction machine, elevator traction machine on motor (11), motor (11) including having casing (12) With rotating shaft (13), it is characterised in that the rotating shaft (13) has the control terminal (14) and output end (15) for stretching out casing (12), institute State decelerator include the master gear (31) in fixed setting output end (15), the side plate one (32) on the inside of master gear (31) and Side plate two (33) on the outside of master gear (31), several and institute are provided between the side plate one (32) and side plate two (33) The planetary gear (34) of master gear (31) engagement is stated, this decelerator also includes one the output gear (35) with ring gear, described Output gear (35) is engaged with each planetary gear (34), and output shaft (36) is fixedly installed on the output gear (35).

A kind of 2. decelerator on elevator traction machine according to claim 1, it is characterised in that the side plate one (32) with it is defeated Go out end (15) between be connected by bearing.

3. the decelerator on a kind of elevator traction machine according to claim 2, it is characterised in that the side plate one (32) and side Plate two (33) is connected between the output gear (35) by bearing.