CN201672035U - Rope pulley used for elevators - Google Patents

Abstract

The utility model discloses a rope pulley used for elevators, which comprises a bearing (1) and a pulley body (2) provided with a rope groove (3), wherein the outer ring of the bearing (1) is in close fit in a central hole of the pulley body (2), and the rope groove (3) and the pulley body (2) are formed into an integral structure by squeezing. By the adoption of the structure, the pulley body and the rope groove used for containing ropes are formed into the integral structure by squeezing, therefore, the techniques of turning, welding and the like of two steel plates in the prior art are omitted, thus reducing the production cost; and simultaneously, the integral structure can prevent deformation of the steel plates of the rope pulley, thus guaranteeing flatness of the rope groove, and further guaranteeing smooth running of the elevator.

Description

Elevator sheave

Technical field

The utility model relates to the elevator field, specifically is a kind of elevator sheave.

Background technique

In the existing traction sheave elevator, generally comprise elevator cab, counterweight, drag device and traction gear etc., can control the door machine device that elevator door opening-closing moves and all can be provided with in the elevator cab, wherein door machine device is the switching that comes the traction elevator door by wire rope, and the spacing of wire rope realized by rope sheave.So the effect of rope sheave is to guarantee the position of wire rope and running orbit.The common structure of rope sheave is to be welded by two steel plates, and the thickness of steel plate mostly is by the thick cold-reduced sheet extrusion modling of 2.5mm and becomes 1mm thick.But there is following shortcoming in the rope sheave of this structure:

1) because two steel plates are welding again after the first extrusion modling, complex process, cost of production is higher.

2) in addition, after steel plate was squeezed into 1mm thickness, it is very thin that wall becomes, and the corresponding intensity that makes rope sheave reduces, through after using for a long time, and the rope sheave easy deformation, thus cause the flatness variation of grooving, finally cause elevator traveling comfort variation.

The model utility content

Technical problem to be solved in the utility model is, provide a kind of cost of production lower, prevent distortion, thereby guarantee the elevator sheave of elevator traveling comfort.

For solving the problems of the technologies described above, the elevator sheave that the utility model provides, comprise bearing and the wheel body with grooving, the outer ring of described bearing is a tight fit in the center hole of wheel body, and described grooving and wheel body are the monolithic construction of extrusion modling.

After adopting above structure, the utility model compared with prior art, have the following advantages:, promptly saved technologies such as the turning of two steel plates in the prior art, welding, thereby reduced cost cost of production because the grooving of wheel body and ccontaining rope is the monolithic construction of extrusion modling; Simultaneously, monolithic construction can prevent the steel plate deformed of rope sheave, thereby guarantees the flatness of grooving, and then guarantees the smooth running of elevator.

Description of drawings

Fig. 1 is the structural representation of the utility model elevator sheave;

Fig. 2 is the plan structure schematic representation of Fig. 1.

Wherein: 1, bearing; 2, wheel body; 3, grooving.

Embodiment

Below in conjunction with the drawings and specific embodiments the utility model is done explanation in further detail.

By the structural representation of Fig. 1, the utility model elevator sheave shown in Figure 2 as can be known, it comprises bearing 1 and has the wheel body 2 of grooving 3, described bearing 1 is a tight fit in the wheel body 2, and described grooving 3 and wheel body 2 are the monolithic construction of extrusion modling.

External diameter with the finished product rope sheave is that Φ 90mm is an example, and the process step of the utility model elevator sheave is:

1) install mould on the punch press of 40T, it is the round iron plate of Φ 92.5mm that the cold-reduced sheet blanking of 110mm * 1350mm * 2.5mm is become diameter;

2) on the punch press of 15T, install mould, with 1) in round iron plate put into mould, towards center hole, the aperture is Φ 13mm;

3) on the punch press of 63T, install mould, with 2) semi-finished product put into mould, stretch forming, at this moment, maximum outside diameter is Φ 91.8mm, the center hole aperture is Φ 29.7mm, total height is 11.2mm;

4) get on the bus the maximum outside diameter of rope sheave to Φ 91.5mm at instrument lathe;

5) right boring center hole on numerically controlled lathe, this moment, the aperture was

Hole depth is 10mm;

6) install mould on hydraulic forming machine and cut open cutter, cut open from the centre with cuing open the maximum outside diameter place of cutter with rope sheave, form the grooving semi-finished product, the half-finished groover rot diameter of grooving is Φ 76.5mm; Simultaneously, with the grooving roll forming, this moment, the maximum outside diameter of rope sheave was with mould

The groover rot diameter of grooving is Φ 76mm, and total height is 10.5mm; Obtain the wheel body like this;

7) on the punch press of 15T, install mould, above-mentioned wheel body is put into mould, install bearing, dash 6 riveting point rigid bearings with punch press in central hole; Obtain the rope sheave finished product like this.

Claims (1)

1. elevator sheave, comprise bearing (1) and have the wheel body (2) of grooving (3), the outer ring of described bearing (1) is a tight fit in the center hole of wheel body (2), it is characterized in that: described grooving (3) and wheel body (2) are the monolithic construction of extrusion modling.

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