CN209383225U

CN209383225U - A kind of pulley and the elevator hoisting systems comprising the pulley

Info

Publication number: CN209383225U
Application number: CN201821754019.5U
Authority: CN
Inventors: 叶荣伟; 张国华
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-10-29
Filing date: 2018-10-29
Publication date: 2019-09-13
Anticipated expiration: 2028-10-29

Abstract

The utility model discloses a kind of pulley and comprising the elevator hoisting systems of the pulley, pulley is equipped with several special-shaped guide grooves being recessed inwardly, and the abnormity guide groove is that groove is scanned along trajectory line, and trajectory line is non-circular closed curve.The elevator hoisting systems include aforementioned pulley and matched hoist ropes, and the pulley is traction sheave in elevator hoisting systems, directive wheel, crosshead sheave, car floor wheel or at least one of roller.In the case where not considering friction, load change, hoist ropes stress is the rotation with pulley and changes, it is mandatory that reason is that the snap-in function of hoist ropes and special-shaped guide groove has, and the noncircularity of special-shaped guide groove scanning track will lead to hoist ropes stress maximum and ceaselessly convert.This allows for the abrasion of hoist ropes everywhere and more tends to be discrete, uniform, to effectively extend the service life of hoist ropes.

Description

A kind of pulley and the elevator hoisting systems comprising the pulley

Technical field

The utility model belongs to elevator technology field, especially a kind of pulley, the pulley can be used as traction sheave in elevator, Directive wheel, crosshead sheave, car floor wheel use at least one of roller, prevent hoist ropes sideslip.

Background technique

Currently, most elevators all uses traction elevator in the market, as the hoist ropes of promotion, common are Wirerope and steel band.Either steel band towed elevator or wirerope towed elevator, although the traction sheave shape difference of the two is bright It is aobvious, but still there are common traits: traction sheave has several grooves, and the groove is rotated a circle by trench cross section around a positive round It is formed.Every elevator device often contains more hoist ropes, since equal error, Yi Yinqi are installed in the manufacture of hoist ropes, traction sheave Following problem: 1) for steel band towed elevator, often making steel band be easy to appear deviation phenomenon, so as to cause steel band local pressure It is excessive, so steel band because concentrated wear, cracking the problems such as due to scrap；2) for wirerope towed elevator, each wirerope is easy There is unbalance stress phenomenon, same wirerope is also likely to occur stress point and is located at the same side phenomenon, so that a certain wirerope It is scrapped because concentrated wear is excessive.To sum up, a kind of pulley is developed, which can be used as traction sheave use, can also be used as and leads To wheel, crosshead sheave, car floor wheel or roller is used, to overcome the above problem, it appears especially urgent and significant.

Summary of the invention

One purpose of the utility model is to provide a kind of pulley, which has special-shaped guide groove, can effectively prevent with There is concentrated wear problems of too in its hoist ropes being used in combination.

Another purpose of the utility model be to provide include above-mentioned pulley elevator hoisting systems, which is included Hoist ropes can the even running in special-shaped guide groove, prevent hoist ropes or so migration and sideslip or prevent some office of hoist ropes Portion's abrasion is excessive.

To achieve the above object, specific technical solution is: a kind of pulley, which is provided with the abnormity that several are recessed inwardly and leads Slot, the abnormity guide groove are that groove is scanned along trajectory line, and trajectory line is non-circular closed curve.

Preferably, the groove is rectangle or class rectangle, the bottom of groove is circular arc, convex that be flat, concaving One of circular arc, the arm of angle is by circular arc or bevel edge transition；Or the groove is trapezoidal.

Preferably, the groove is V-arrangement；Alternatively, the groove is semicircle.It is specific to be divided into band notch semicircle again Slot, without notch half slot, band notch V-groove, without notch V-groove.

Preferably, there is a central plane, the plane for crossing pulley center axis for one, the trajectory line is in central plane On projection line be straight line or ellipse.

Preferably, the pulley has 1 special-shaped guide groove.

Or preferably, the traction sheave has 2N special-shaped guide groove, N is the natural number more than or equal to 1.More Further, any two it is adjacent special-shaped guide groove it is in a symmetrical arrangement along mid-plane；Or the two of symmetrical plane Side, 2N special-shaped guide groove is in a symmetrical arrangement, also, N number of special-shaped channel configuration on the left of symmetrical plane is identical, successively sets side by side It sets.

A kind of elevator hoisting systems, it is characterised in that: the elevator hoisting systems include aforementioned pulley and mating with it The hoist ropes used, the pulley are traction sheave, directive wheel, crosshead sheave, car floor wheel or in roller in elevator hoisting systems At least one；The hoist ropes is steel band or wirerope.

Preferably, the elevator hoisting systems are also equipped with several bars, bar is connected with traction motor or rack, Prevent hoist ropes from runaway on special-shaped guide groove.Particularly, bar can be made of mandrel, idler wheel and bearing, mandrel and traction Motor or rack are mutually fixedly connected, and bearing is between mandrel and idler wheel, and idler wheel is mutually touched with hoist ropes, can thus be subtracted Friction loss between small bar and hoist ropes.

For traditional traction sheave, race is to be scanned by groove along circular scan track, if not considering to rub It wipes, the variation of load, it may be considered that hoist ropes stress condition is unrelated with the rotation angle of traction sheave.It is not difficult to find out that hoist ropes Uniform wear or the precondition of local excessive abrasion is not generated nothing more than two o'clock: first is that hoist ropes material distribution everywhere is equal It is even；Second is that stress size is identical everywhere for hoist ropes.The material that the former is limited by hoist ropes forms and its manufacturing process, the latter are then right Traction sheave, the manufacture of hoist ropes and installation accuracy propose high requirement.For pulley described in the utility model, if Traction sheave has the pulley form of special-shaped guide groove using this, since special-shaped guide groove is scanned by groove along non-circular scanning track At in the case where not considering friction, load change, hoist ropes stress is the rotation with traction sheave and changes that reason exists Have in the snap-in function of hoist ropes and special-shaped guide groove mandatory, and the noncircularity of special-shaped guide groove scanning track will lead to traction Rope stress maximum ceaselessly converts.This allows for the abrasion of hoist ropes everywhere and more tends to be discrete, uniform.

To sum up, after elevator hoisting systems described in the utility model use the pulley with special-shaped guide groove, traction can be improved The force-bearing situation of rope, so that the abrasion of hoist ropes everywhere is more uniform, to effectively extend the service life of hoist ropes.

Detailed description of the invention

The projection view and perspective view of the utility model pulley is shown respectively in Figure 1A, Figure 1B；

Fig. 2A shows the first planform of pulley groove；

Fig. 2 B shows second of planform of pulley groove；

Fig. 2 C shows the third planform of pulley groove；

Fig. 2 D shows the 4th kind of planform of pulley groove；

Fig. 2 E shows the 5th kind of planform of pulley groove；

Fig. 2 F shows the 6th kind of planform of pulley groove；

Fig. 2 G shows the 7th kind of planform of pulley groove；

Fig. 3 A is schematic diagram when being projected as straight line of trajectory line in the utility model；

Fig. 3 B is schematic diagram when being projected as ellipse of trajectory line in the utility model；

Fig. 4 is schematic diagram when the utility model middle pulley has 1 special-shaped guide groove；

Fig. 5 A is special-shaped guide groove the first arrangement form when the utility model middle pulley has a 2N special-shaped guide groove；

Fig. 5 B is second of arrangement form of special-shaped guide groove when the utility model middle pulley has 2N special-shaped guide groove；

Fig. 6 is the utility model elevator hoisting systems schematic diagram.

Fig. 7 shows structural schematic diagram when the utility model elevator hoisting systems include bar.

Fig. 8 A is the cooperation schematic diagram of the utility model pulley and steel band；

Fig. 8 B is the cooperation schematic diagram of the utility model pulley and wirerope；

Specific embodiment

In the following, being illustrated based on attached drawing to the embodiments of the present invention.

As shown in Figure 1A, 1B, a kind of pulley, it is characterised in that: pulley is equipped with several special-shaped guide grooves being recessed inwardly, The abnormity guide groove is that groove (11) are scanned along trajectory line (12), and trajectory line (12) is non-circular closed curve.

Preferably, the groove (11) is rectangle or class rectangle, and the bottom of groove is flat as shown in Fig. 2A, 2C, 2D One of bottom, the circular arc to concave, the circular arc of convex, the arm of angle is by circular arc or bevel edge transition.

Preferably, as shown in Figure 2 B, the groove (11) is trapezoidal.

Preferably, as shown in Figure 2 E, the groove (11) is V-arrangement；Alternatively, as shown in Figure 2 F, the groove (11) is It is semicircle；Or as shown in Figure 2 G, the groove (11) is band notch half slot.

Preferably, central plane (A) is a plane for crossing pulley center axis (O), described as shown in Fig. 3 A, Fig. 3 B The projection line (L) in plane (A) is straight line or ellipse to trajectory line (12) in its center.

Preferably, as shown in figure 4, the pulley has 1 special-shaped guide groove.

Or preferably, as shown in Fig. 5 A, Fig. 5 B, the traction sheave has 2N special-shaped guide groove, N be greater than or Natural number equal to 1.Moreover: as shown in Figure 5A, the adjacent special-shaped guide groove of any two along mid-plane (B-B) at It is arranged symmetrically；As shown in Figure 5 B, in the two sides of symmetrical plane (C-C), 2N special-shaped guide groove (10) is in a symmetrical arrangement, also, N number of special-shaped channel configuration on the left of symmetrical plane (C-C) is identical, is successively set side by side.

As shown in fig. 6, a kind of elevator hoisting systems, it is characterised in that: the elevator hoisting systems include aforementioned pulley with And matched hoist ropes (1), the pulley is traction sheave (21) in elevator hoisting systems, crosshead sheave (22), right At least one of roller (23), car floor wheel or directive wheel；The hoist ropes (1) is steel band or wirerope.

Preferably, as shown in fig. 7, the elevator hoisting systems are also equipped with several bars (3), bar (3) and traction Motor (2) or rack are connected, and prevent hoist ropes from runaway on special-shaped guide groove.Particularly, bar (3) can be by mandrel, idler wheel And bearing composition, mandrel are mutually fixedly connected with traction motor (2) or rack, bearing is between mandrel and idler wheel, and idler wheel It is mutually touched with hoist ropes, thus can reduce the friction loss between bar (3) and hoist ropes.

As shown in Fig. 8 A, Fig. 8 B, under normal circumstances: the aforementioned groove (11) be rectangle, class rectangle or it is trapezoidal when, traction (1) is restricted generally using steel band form；Likewise, being draged when the aforementioned groove (11) is for V-arrangement, semicircle or with notch half slot Messenger (1) generally uses wirerope form.

For pulley described in the utility model, if traction sheave has the pulley form of special-shaped guide groove using this, by It is scanned by groove along non-circular scanning track in special-shaped guide groove, in the case where not considering friction, load change, hoist ropes Stress is the rotation with traction sheave and changes, and it is mandatory that reason is that the snap-in function of hoist ropes and special-shaped guide groove has, And the noncircularity of special-shaped guide groove scanning track will lead to hoist ropes stress maximum and ceaselessly convert.It is each that this allows for hoist ropes The abrasion at place more tends to be discrete, uniform.

The utility model structure is simple, and the manufacturing cost of pulley is relatively low, and can not only realize and promote hoist ropes certainly Dynamic centering, guarantees hoist ropes even running in traction race, but also improve the stress of hoist ropes, extends it and uses the longevity Life, while reducing vibration and noise.

The utility model is not limited to the above embodiment, and cannot be enumerated, all to be set using what the utility model had been pointed out Meter mode or mentality of designing are considered as being within the protection scope of the utility model.

Claims

1. a kind of pulley, it is characterised in that: pulley is equipped with several special-shaped guide grooves being recessed inwardly, and the abnormity guide groove is recessed Slot (11) is scanned along trajectory line (12), and trajectory line (12) is non-circular closed curve.

2. a kind of pulley according to claim 1, it is characterised in that: the groove (11) is rectangle or class rectangle, groove Bottom be one of flat, the circular arc that concaves, the circular arc of convex, the arm of angle is by circular arc or bevel edge transition；

Or the groove (11) is trapezoidal.

3. a kind of pulley according to claim 1, it is characterised in that: the groove (11) is V-arrangement or the groove (11) be semicircle or the groove (11) is band notch half slot.

4. a kind of pulley according to claim 1, it is characterised in that: central plane (A) crosses pulley center axis (O) for one Plane, the projection line (L) in plane (A) is straight line or ellipse to the trajectory line (12) in its center.

5. a kind of pulley according to claim 1, it is characterised in that: the pulley has 1 special-shaped guide groove.

6. a kind of pulley according to claim 1, it is characterised in that: the pulley has 2N special-shaped guide groove, N be greater than Or the natural number equal to 1.

7. a kind of pulley according to claim 6, it is characterised in that: the adjacent special-shaped guide groove of any two is along mid-plane (B-B) in a symmetrical arrangement.

8. a kind of pulley according to claim 6, it is characterised in that: in the two sides of symmetrical plane (C-C), 2N abnormity is led Slot (10) is in a symmetrical arrangement, also, N number of special-shaped channel configuration on the left of symmetrical plane (C-C) is identical, is successively set side by side.

9. a kind of elevator hoisting systems, it is characterised in that: the elevator hoisting systems include in claim 1-8 any right want The pulley and matched hoist ropes (1) are asked, the pulley is the traction sheave in elevator hoisting systems, guiding Wheel, crosshead sheave, car floor wheel or at least one of roller；The hoist ropes (1) is steel band or wirerope.

10. a kind of elevator hoisting systems according to claim 9, it is characterised in that: the elevator is also equipped with several gears Bar (3), bar (3) are connected with traction motor or rack, prevent hoist ropes from runaway on special-shaped guide groove.