CN101554972B - Passenger and freight elevator traction machine suitable for frame machine roomless installation - Google Patents

Abstract

The invention relates to a passenger and goods elevator tractor suitable for frame-type machine-roomless installation, belonging to the technical field of lifting facilities. The tractor comprises a motor provided with a brake drum, a reduction gearbox which is linked with the motor in a transmission way and provided with a brake arm bracket, a traction sheave fixedly arranged at an output shaft of the reduction gearbox, a first mounting seat and a second mounting seat that are constructed on the reduction gearbox, and a power loss braking device comprising a brake arm and a power loss braker;wherein, the two ends of the output shaft of the reduction gearbox are propped against a first output shaft supporting seat and a second output shaft supporting seat which are fixed at the two sides of the reduction gearbox and corresponding to each other; one end of the output shaft of the reduction gearbox extends out of the first output shaft supporting seat, and the traction sheave is fixed at the shaft end of the output shaft of the reduction gearbox extended out of the first output shaft supporting seat. The passenger and goods elevator tractor has the characteristic that the first and the second output shaft supporting seats are of circular truncated cone shapes. And the passenger and goods elevator tractor has the advantages of simplifying the structure, being beneficial for processing, manufacturing and installing, in particular suitable for frame-type machine-roomless installation.

Description

Passenger and freight elevator traction machines suitable for frame machine room-less installation

technical field

The invention belongs to the technical field of lifting facilities, and in particular relates to a traction machine for passenger and freight elevators suitable for frame-type machine room-less installation. the

Background technique

As known in the industry, frame-mounted traction machines for passenger and freight elevators do not need to be equipped with a machine room, as long as the car and the guide rails in the hoistway form a sliding pair or a rolling pair. However, for traction machines of passenger and freight elevators installed without machine rooms, the structure is often required to be more concise. Of course, the prerequisite must be to ensure the safety and stability of operation. the

Chinese Utility Model Patent Authorization Announcement No. CN200974733Y discloses a traction machine for passenger and freight elevators (proposed by the applicant), the structure of which is shown in Figure 5, including a motor 1, a gear box 2 connected to the motor 1, and a gear box installed in the gear box. 2, the traction sheave 3 on the reduction box output shaft 21 of 2, the first and second mounts 4, 5 formed on the reduction box 2 and forming a right angle relationship between each other, the brake arm 61 and the power-off brake 62 The power-off braking device 6 and a hanging foot 7 (also known as a shaft seat) for supporting the output shaft 2 of the reduction box are formed. The technical contribution of the passenger and freight elevator traction machine of this structure is very prominent, and the details can be See lines 14-15 on page 2 of the patent specification and lines 6 to 14 on page 3 of the specification. However, the applicant believes that the structure of the above-mentioned patent still has the following shortcomings: first, the patent solution takes into account the safety and stability of the traction machine during operation, and one end of the output shaft 21 of the reduction box with the traction wheel 3 is installed Supported on the hanging foot 7, so as to avoid the heavy traction sheave 3 to produce deflection to the reduction box output shaft 21 and affect safety or stability. However, because the hanging feet 7 need to be supported by a carrier, the patent recommends an organic base 8 for fixing the lower ends of the hanging feet 7 to the machine base 8 . Obviously, this structure will increase the cost of manufacture in addition to troublesome installation and loose structure; secondly, there is a pair of de-energized brakes 62, which are respectively connected with a pair of brake arms 61, so when the de-energized brake 62 is to be replaced, A pair of brake arms must be dismantled before replacement can be implemented, thereby increasing the workload of disassembly and installation. the

The two defects in the above structure can be further confirmed by the structure of the sundries elevator traction machine provided by the Chinese invention patent application publication number CN101020552A. the

As mentioned above, as a traction machine for passenger and freight elevators suitable for frame-type machine room-less installation, how to simplify the structure, facilitate processing and installation under the premise of ensuring safety and stable operation is always the focus of traction machine manufacturers problem, and the structure disclosed in the aforementioned patents is not enough to meet such requirements, so there is still a need for improvement. the

Contents of the invention

The task of the present invention is to provide a passenger and freight elevator traction machine suitable for frame-type machine-room-less installation without using hanging feet, thereby simplifying the structure and ensuring safety and easy installation. the

The task of the present invention is also to provide a traction machine for passenger and freight elevators suitable for frame-type machine room-less installation, which is easy to disassemble and replace when the power-off brake device is installed. the

The task of the present invention is accomplished in this way, a passenger and freight elevator traction machine suitable for frame-type machine room-less installation, including a motor with a brake drum, a reduction box with a brake arm bracket connected to the motor transmission , the traction sheave fixed on the output shaft of the reduction box of the reduction box, the first and second mounting bases formed on the reduction box and forming a right angle relationship with each other, and the power failure composed of the brake arm and the power-off brake. Electric braking device, the two ends of the output shaft of the reduction box are respectively supported on the first and second output shaft support seats, and the first and second output shaft support seats are respectively fixed on both sides of the reduction box and correspond to each other , wherein, one end of the output shaft of the reduction box extends outside the first output shaft support seat, and the traction sheave is fixed on the shaft end of the output shaft of the reduction box extended outside the first output shaft support seat, and the characteristics are as follows: The shapes of the first and second output shaft supporting seats are respectively truncated conical. the

One end of the output shaft of the reduction box according to the present invention is supported on the first output shaft supporting seat through the inner and outer bearings, and the other end of the output shaft of the reduction box is supported on the second output shaft supporting seat through the bearing superior. the

Still another task of the present invention is accomplished in this way. The lower ends of the pair of brake arms of the power-off braking device each have a moving iron core supporting gap, and the pair of moving iron core supporting gaps correspond to each other. The middle part is fixed with a tile-shaped brake friction plate, which corresponds to the brake drum of the motor, and the upper end of each brake arm has a hinged seat, and a pair of hinged seats are connected with the brake arm bracket of the reduction box. The hinge lug on the upper part is hinged, and the lower part of each brake arm is connected to the bracket wall at the lower end of the flange where the reduction box and the motor are connected by a brake lever and a spring. The power-off brake is a double-thrust electromagnetic brake , embedded on the second mounting seat, the pair of moving iron cores of the electric-loss brake correspond to the pair of moving iron core supporting notches. the

A handle is connected to the body of the dead brake according to the present invention. the

In the present invention, because the first and second output shaft support seats are designed into a truncated cone shape, when the traction sheave is fixed on the shaft end of the output shaft of the reduction box extending out of the first output shaft support seat, the output shaft of the reduction box will not There will be a deflection phenomenon, so that not only the hanging feet in the prior art can be abandoned, but also the safety and stability can be fully ensured, the structure is effectively simplified, and the processing, manufacturing and installation are beneficial, and it is especially suitable for frame-type machine room-less installation. the

Description of drawings

Fig. 1 is a structural diagram of the first embodiment of the present invention. the

Fig. 2 is a structural diagram of the second embodiment of the present invention. the

Fig. 3 is a schematic diagram of assembly of the power-loss braking device of the present invention. the

Fig. 4 is a schematic diagram of an application example of the present invention. the

Fig. 5 is a structural diagram of a traction machine for passenger and freight elevators in the prior art. the

Detailed ways

Example 1:

Please see Fig. 1 and Fig. 3, have provided the structure of the present invention that shows as horizontal installation under the state of use, when the width of hoistway is sufficient, horizontal installation is in the hoistway, otherwise then is installed in the hoistway with vertical or Placed in the set machine room. The combination of the motor 1 and the reduction box 2 is the transmission connection, specifically through the brake drum 11 and the reduction box 2. The connection method belongs to the known technology. The reduction box output shaft 21 is driven by the worm wheel 23, and one end of the reduction box output shaft 21 is supported on the second output shaft support 9b through the bearing 215. The casing is fixed; the other end of the reduction box output shaft 21 is supported on the first output shaft support 9a by inner and outer bearings 211, 212, and the first output shaft support 9a is connected with the second screw 9a1 of the reduction box 2 The box body is fixed and protrudes out of the first output shaft support 9a. A flat key 213 is formed at the shaft end of the reduction box output shaft 21 protruding from the first output shaft support 9a, and the traction sheave 3 is fixed with the flat key 213 through the flat key groove 31 in its center, and also uses the blocking plate 32 to The fixing screw 321 (ie, the circumferential fixing screw) is fixed to the end face of the output shaft 21 of the reduction box, so as to prevent the traction sheave 3 from dislodging from the output shaft 21 of the reduction box and cause potential safety hazards. the

Continuing to see Fig. 1, as a technical point of the present invention, the first and second output shaft support seats 9a, 9b are both designed in the shape of a truncated cone (which may be referred to as a truncated cone). The truncated conical shape defined by the applicant is not limited by the meaning of the word, for example, this shape can also be called basin shape, trumpet shape or bell jar shape and so on. As far as one end of the reduction box output shaft 21 for installing the traction sheave 3 is concerned, since the structure of the first output shaft support 9a is shown as a truncated cone, the distance protruding out of the first output shaft support 9a is expressed as Because it is shorter, there will be no deflection problem. Therefore if the first output shaft support 9a is designed into the disc shape of the prior art, then because the wheelbase of the reduction box output shaft 21 stretches out of the reduction box 2 is lengthy, it is necessary to use the hanging pin 7 as shown in Figure 5 To avoid the generation of deflection, at the same time according to the corresponding design of the main shaft load, you can abandon the hanging pin 7 (shown in Figure 5). In order to achieve the purpose of effectively reducing the width of the traction machine, the traction machine and the counterweight frame can be in the same plane position. Especially when the hoistway is composed of a frame, the drive and operation of the elevator can be integrated within the frame (shown in Figure 4). The oil seal 214 illustrated in the figure is used to seal between the first output shaft support 9a and the output shaft 21 of the reduction box, and the seal between the second output shaft support 9b and the output shaft 21 of the reduction box is also provided by the corresponding oil seal. 214 is in charge. the

On the casing of the reduction box 2, first and second mounts 4, 5 are integrally produced, and a right-angle relationship is formed between the first and second mounts 4, 5, that is, the two form a 90° relationship. It is the second mounting seat 5 that plays a role in the installation method. In addition, similar to the prior art, a brake arm bracket 22 is formed on the box body of the reduction box 2, and a hinge ear 221 is respectively provided on the corresponding two sides of the upper part of the brake arm bracket 22 for power-off braking. The device 6 is associated therewith. the

Still referring to Fig. 1, the upper ends of a pair of brake arms 61 as the power-off braking device 6 each have a hinge seat 613, which is hinged with the aforementioned hinge ear 221 by a pin shaft 6131; It is a shoe-shaped cavity, and a shoe-shaped brake friction plate 612 is fixed in the shoe-shaped cavity. A pair of shoe-shaped brake friction plates 612 correspond to the aforementioned brake drum 11; , and a pair of moving iron core supporting notches 611 correspond to each other. The bottom of each brake arm 61 passes through the brake lever 614 and carries the spring 615 and is connected on the connection hole 121 provided on the flange lower end bracket wall 12 that the aforementioned reduction box 2 is connected with the motor 1, one end of each spring 615 It abuts against the blocking plate 6141 defined on the brake rod 614 by the nut 6142 , and the other end abuts against the bracket wall 12 . There is one dead brake 62 , which is embedded on the second mounting seat 5 and corresponds to the lower part of the brake drum 11 . Since the power-off brake 62 is a dual-thrust electromagnetic brake, it has a pair of moving iron cores 621 corresponding to the aforementioned pair of moving iron core supporting notches 611 . In order to achieve manual opening and to facilitate the lifting of the dead brake 62, a handle 622 is connected to its body. The aforementioned double-thrust electromagnetic brake is preferably, but not limited to, the model MT-II double-thrust electromagnetic brake produced and sold by Mingshun Brake Co., Ltd., Shunde City, Guangdong Province, China. Because the present invention is reasonable to the structural selection and installation mode of the power-off brake 62, it is not necessary to disassemble a pair of brake arms 61 like the prior art (two patents cited in the background technology column) when changing, so that Reflect the effect of easy disassembly and assembly. the

Example 2:

Please refer to FIG. 2 , which shows the structure of the present invention that is installed vertically in the state of use. The first mounting seat 4 plays the role of mounting and fixing, and the rest are the same as the description of Embodiment 1. the

Application example:

See also Fig. 4, adopt the installation form of embodiment 2 promptly to install the present invention in the frame type hoistway of machine-room-less with vertical state, one end of traction rope 10 is fixed with counterweight 20, and the other end passes through a pair of The first transition sheave 30, traction sheave 3, a pair of second transition sheave 40 and the third transition sheave 501 on the top of the car 50 are fixed with the top of the hoistway, and the car 50 is slipped on the frame 60. Because the working principle of the passenger and freight elevator traction machine installed in the frame-type machine-room-less structure of the present invention is the same as that of the prior art, the applicant will not repeat it. In addition, according to the known common sense, although the present invention is exemplified to be installed at the bottom of the hoistway in this application, it is not limited to it because it can be installed at any position (including the top) in the height direction of the hoistway. the

Claims (4)

1. one kind is suitable for the visitor that frame-type does not have the machine room installation, the goods elevator towing machine, comprise the have brake wheel motor (1) of (11), the drop-gear box that has brake control lever support (22) (2) with motor (1) transmission connection, be packed in the traction sheave (3) on the reduction gearbox output shaft (21) of drop-gear box (2), be formed in first mount pad on the drop-gear box (2) and that form right-angle relationship each other (4), second mount pad (5) and the dead electricity brake equipment (6) that constitutes by brake control lever (61) and electricity loss brake (62), the two ends of described reduction gearbox output shaft (21) are supported on respectively on the first output shaft supporting base (9a) and the second output shaft supporting base (9b), the first output shaft supporting base (9a) and the second output shaft supporting base (9b) are separately fixed at the both sides of drop-gear box (2) and correspond to each other, wherein, one end of reduction gearbox output shaft (21) is stretched over outside the first output shaft supporting base (9a), described traction sheave (3) is fixed on the axle head that is stretched over the outer reduction gearbox output shaft (21) of the first output shaft supporting base (9a), it is characterized in that: the shape of the described first output shaft supporting base (9a) and the second output shaft supporting base (9b) respectively is truncated cone.

2. the frame-type that is suitable for according to claim 1 does not have visitor, the goods elevator towing machine that machine room is installed, an end that it is characterized in that described reduction gearbox output shaft (21) is bearing on the described first output shaft supporting base (9a) by neck bearing (211) and outer bearing (212), and the other end of reduction gearbox output shaft (21) is bearing on the described second output shaft supporting base (9b) by bearing (215).

3. the frame-type that is suitable for according to claim 1 does not have the visitor that machine room is installed, the goods elevator towing machine, it is characterized in that described brake control lever (61) has a pair of, the lower end of each brake control lever (61) has a moving iron core supporting breach (611), a pair of moving iron core supporting breach (611) corresponds to each other, the middle part of each brake control lever (61) is installed with a watt shape brake strip (612), watt shape brake strip (612) is corresponding with the brake wheel (11) of described motor (1), the upper end of each brake control lever (61) has a hinged seat (613), hinged ear (221) on the brake control lever support (22) of a pair of hinged seat (613) and described drop-gear box (2) is hinged, the bottom of a pair of brake control lever (61) each by brake rod (614) and carry spring (615) and be bound up on the flange lower end cradle wall (12) that described drop-gear box (2) and motor (1) connect, described electricity loss brake (62) is the dual thrust electromagnetic brake, be embedded on described second mount pad (5) face, a pair of moving iron core (621) of this electricity loss brake (62) is corresponding with described a pair of moving iron core supporting breach (611).

4. do not have visitor, the goods elevator towing machine that machine room is installed according to claim 1 or the 3 described frame-types that are suitable for, it is characterized in that being linked with one handle (622) on the body of described electricity loss brake (62).

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