CN208292554U - A kind of hoisting mechanism balancing gradual change gravity - Google Patents

Abstract

The utility model discloses the hoisting mechanisms that one kind can balance gradual change gravity, including hoist engine, balancing device, first rope, second rope, the elevator wheel is that rotary table and cylinder are composed in rotary table smaller part diametric plane, and rotary table coincides with cylinder axis, first rope one end is wound at hoist engine rotary table end, direction of winding is from rotary table smaller part diametric plane to the more than half diametric plane of rotary table, the first rope other end connects balancing device, and second rope one end is wound in the elevator wheel other end, and the second rope other end is used for lifting heavy；In use process, it is wrapped in first rope at elevator wheel rotary table end, winding radius gradually changes, and by force analysis it is recognised that this radius gradually changed can offset the gravity that hoisting mechanism gradually changes in, is allowed to reach balance.

Description

A kind of hoisting mechanism balancing gradual change gravity

Technical field

The utility model relates to engineering machinery fields, more particularly to a kind of hoisting mechanism that can balance gradual change gravity.

Background technique

The working principle of hoist engine, by the way that the roller of two different-diameters is arranged, according to the balance of power, balancing device It is subjected to displacement weight with lesser power, simultaneously because the presence of elevator wheel, the move mode of weight is also no longer limited to level Or it is vertical, it can realize that the gradient is mobile by track.Its problem is also obvious, mentions as Fig. 5 shows respectively the prior art The elevator wheel of confession is started to work and the force analysis under steady-working state, according to balance between two forces, it can be deduced that shown in Fig. 2 When elevator wheel is started to work, mechanical balance formula is F*R1=G*R2；And it is in the state of elevator wheel steady operation shown in figure three When, lead to both ends force unbalance since the gravity of rigging is also added thereto, mechanical expressions F*R1 < (G+ Δ g) R2, it is this Unbalanced stress just will affect the movement of weight, in order to keep the proper motion of weight just to need additionally to increase power.

Wherein F is the constant force of balancing device output, and R1, R2 are elevator wheel roller radius, and G is the gravity of weight, Δ g is gravity increment caused by rigging.

It is disclosed on November 19th, 2014, entitled " the reducing type roller, energy saving hoist engine of Publication No. CN104150386A The Chinese utility model patent of structure, lift bucket type mixing plant and control method " discloses a kind of energy conservation for lift bucket type mixing plant Hoisting mechanism, principle are realized by the roller of three different-diameters, and the first roller is not coaxial with other two rollers, When work, the effect of the first roller is the torque and performance number for reducing motor to the greatest extent in moment starting, and the second roller is made With being to accelerate, the effect of third roller is brake and reduces current protection motor, which stirs primarily to solving lift bucket type Damage of the instantaneous starting to equipment that station occurs is mixed, although also can balancing gravity to a certain extent.But in stable operation Gravity in journey linearly increases, and the above method is the roller for having changed a large radius, can not be balanced well It gradually increases or the gravity of reduction.

Utility model content

In view of the above-mentioned problems, the purpose of this utility model is to propose a kind of elevator structure that can balance gradual change gravity, energy The gravity of linear increase, makes system stress balance, reduces the effect of manual thrust in enough balance and stability operational process.

To achieve the above object, the utility model proposes the hoisting mechanisms that one kind can balance gradual change gravity, including installation Elevator wheel in hoist engine and the balancing device and weight that elevator wheel both ends are connected to by rope, the elevator wheel be by The cylindrical body that one rotary table and a diameter are less than rotary table smaller part diametric plane is composed in rotary table smaller part diametric plane, rotary table and cylindrical body Axis coincide, and elevator wheel is horizontally mounted.

Optionally, the balancing device is connect by rope with the rotary table position of elevator wheel, and direction of winding is small from rotary table Edge grain is to rotary table lower end surface.

Optionally, the weight is connect by rope with cylinder one end of elevator wheel, and rope rolling direction is by close to rotary table one end Outward.

Optionally, the balancing device is to provide constant force, and pulling force size depends on the gravity of weight.

One preferably or in alternative embodiment, two roller diameters and corresponding rope groove circle number of the elevator wheel, According within the duty cycle of the balancing device.

Based on the above-mentioned technical proposal, the utility model at least has the advantages that

1, the two-part wiring direction of elevator wheel is identical, to ensure that between two ropes in use there is one section always Spacing avoids elevator wheel service life caused by stress is concentrated and reduces.

2, energy consumption, energy conservation and environmental protection are reduced.The gradual change gravity generated during being balanced by the variation in structure, subtracts Increase power bring energy consumption is lacked, has been more energy-saving and environmentally friendly.

3, cost is reduced.Hoist engine balances the gradual change gravity generated during stable operation, from without additionally increasing Power guarantees balance, to reduce cost.

4, facilitate popularization.It can be improved to the utility model from the prior art quickly, while work on hand stream can not be changed Journey, work habit, therefore promote at low cost.

Detailed description of the invention

Attached drawing described herein is used to provide a further understanding of the present invention, and is constituted part of this application, The exemplary embodiment of the utility model and the description thereof are used to explain the utility model, does not constitute to the improper of the utility model It limits.

Fig. 1 is the hoisting mechanism schematic diagram that the utility model provides.

Fig. 2 is the state diagram before the hoisting mechanism of the prior art is started to work.

Fig. 3 is the state diagram of the hoisting mechanism steady operation of the prior art.

Fig. 4 is the hoisting mechanism steady-working state figure of the optimum embodiment according to the utility model.

The hoisting mechanism force analysis figure that Fig. 5 prior art provides.

Fig. 6 force analysis figure provided by the utility model for balancing gradual change gravity hoist engine.

In attached drawing:

1- balancing device；The first rope of 2-；3- elevator wheel；The second rope of 4-；5- weight；6- rigging.

Specific embodiment

In the description of the present invention, it should be understood that term " center ", " radial direction ", "horizontal", "vertical", The orientation or positional relationship of the instructions such as "front", "rear", "bottom", "top" is to be based on the orientation or positional relationship shown in the drawings, and is only For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific Orientation, be constructed and operated in a specific orientation, therefore should not be understood as the limitation to scope of protection of the utility model.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary, It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition The concrete meaning of language in the present invention.

Embodiment 1

A kind of hoisting mechanism balancing gradual change gravity, including hoist engine, balancing device, the first rope, the second rope, institute It states first rope one end to wind on hoist engine one end, the first rope other end connects balancing device, second rope one end It is wound in the elevator wheel other end, the second rope other end is used for lifting heavy.Wherein elevator wheel 3 is integrally formed, shape Can regard as by section shape is that the cylindrical body that the stair-stepping rotary table of three-level and a diameter are less than rotary table smaller diameter face is small in rotary table Diametral plane is composed, and the two axis coincides.

The present embodiment is preferred embodiment, has compared the prior art, and section shape is that stair-stepping roller may be implemented half The step variation of diameter has certain counterbalance effect to gradual change gravity, and every grade of ladder be all it is horizontal, retractable rope is not allowed more Easily there is disorder cable, sting the phenomenon that rope, in addition the power device of the present apparatus is balancing device, and the balancing device 1 is to provide constant The device of pulling force, such as Spring balancer, use process are: when starting to be promoted, rope 2 is withdrawn and is passed through by balancing device 1 Rope applies a constant pulling force to weight through elevator wheel, and rope 2 constantly withdraws balancing device, and elevator wheel also rotates with it, It connect the second rope 4 with weight to wind on cylinder, weight gets a promotion；In order to guarantee lifting heavy when the setting of step rotary table During 5, radius is in increase, and in addition weight 5 is also connected with rigging 6, and rigging 6 is that one end is connected to stationary plane such as metope The rope of weight is connected Deng, the other end, weight loosens the component for causing accidental loss in order to prevent, in use not load, by In not set rope reeling mechanism so the weight of rigging 6 can slowly increase on weight 5 with the promotion of weight 5, cause on weight 5 Lifting speed is gradually slack-off, and after 3 spin for some time of elevator wheel, the rope 2 connecting with balancing device 1 starts bigger in radius of turn Level-one step wiring, by mechanical balance: F*R1=G*R2(wherein F be constant force, R1 for pulling force around circular cylinder radius, G For weight gravity, R2 is weight rope institute around circular cylinder radius) balancing device 1 institute increase around circular cylinder radius, increase can be balanced in weight The quality of rigging 6 on object 5, when weight 5 and 6 mass of rigging continue growing a period of time, the first rope 2 that balancing device 1 connects Just enter the bigger ladder of next wiring radius, to realize the balance to gradual change gravity.

Embodiment 2

As shown in figure 4, a kind of hoisting mechanism that can balance gradual change gravity, including hoist engine, balancing device, the first rope, Second rope, first rope one end are wound on hoist engine one end, and the first rope other end connects balancing device, and described the Two rope one end are wound in the elevator wheel other end, and the second rope other end is used for lifting heavy.The roller can regard a circle as The cylindrical body that platform and a diameter are less than rotary table smaller part diametric plane is composed in rotary table smaller part diametric plane.The elevator wheel surface setting On the one hand the helical form rope groove for having axis to be overlapped with elevator wheel axis, rope groove can accommodate the rope being wrapped on elevator wheel, separately On the one hand, spiral helicine rope groove can effectively guide rope coiling to raise wheel winding without disorder cable, in the present embodiment, be located at Rope groove on rotary table can also prevent rope from loosening in gradient plane.

The utility model breaks conventional isometrical elevator wheel, sets the large roller of elevator wheel close to balancing device side to Rotary table, since its radius is in linear change, according to the stress of Fig. 6 point from top to bottom for the plane of be parallel to rotary table bottom surface Analysis is as can be seen that the expression formula of power is F* (R1+ Δ r)=(G+ Δ g) * R2, wherein R1, R2- radius；The gravity of G- weight；H0- Height of the weight relative to ground when rigging does not apply additional gravity to rope；It is opposite when H1 rigging is to rope application additional gravity Height in ground；Δ R- radius increment；Δ g- gravity increment.It can be seen that both sides increase an increasing linearly increased simultaneously Amount, it is achieved that balance, to reach said effect, wiring direction is wound towards more than half diametric plane by the minor radius of rotary table, is mentioned When rising, rope is wrapped over entire rotary table part since smaller part diametric plane, and winding radius is gradually increased during being somebody's turn to do.

In lifting heavy, balancing device 1 will withdraw around the rope 2 of full elevator wheel rotary table one end and apply one by rope A constant pulling force, rope 2, which is pumped, drives elevator wheel 3 to rotate, and also drives and starts to wind in the rope 4 in 3 rotary table portion of elevator wheel, Weight is also promoted therewith, the side of rotary table be it is acclive, rope 2 can be also gradually increased in the winding radius of wound thereon, root According to mechanical balance, the variation of the radius and the 6 mass bring power of rigging gradually increased that gradually increase is cancelled out each other, to realize Balance, due to the radius that rope is wound in the slope surface of rotary table be it is linearly increasing, rigging 6 increases to the quality on weight 5 And it is linearly increasing, dynamic equilibrium may be implemented in the two, and macro manifestations are that weight speed in lifting process is consistent, is promoted Cheng Pingwen.

The present embodiment is most preferred embodiment, on the one hand, realizes that the first rope twines during winding using rotary table slope surface Around radius linear change, the radius and rigging of linear change are added in the power on weight during the motion and realize dynamic equilibrium, from And keeping weight more steady in lifting process, the first rope winding radius in embodiment 1 is paragraph type variation, so Weight is not average rate in lifting process；On the other hand, the first rope, the second rope are respectively placed in two elevator wheel both ends, Uniform force, it is more durable, more steadily there is the higher scope of application compared to its lifting process of embodiment 1 is played, is optimal reality Apply mode.

Finally, it should be noted that it should be understood that the utility model described embodiment is only the utility model A part of the embodiment, rather than whole embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not having Every other embodiment obtained under the premise of creative work is made, is fallen within the protection scope of the utility model.

Unless otherwise defined, all technical and scientific terms used in this specification have with belonging to the utility model The identical meaning of the normally understood meaning of field those skilled in the art institute.

Claims (5)

1. one kind can balance the hoisting mechanism of gradual change gravity, including hoist engine, balancing device, the first rope, the second rope is described First rope one end is wound on hoist engine one end, and the first rope other end connects balancing device, and second rope one end exists The winding of the elevator wheel other end, the second rope other end is used for lifting heavy, it is characterized in that: elevator wheel is variable diameter roller.

2. the hoisting mechanism that one kind according to claim 1 can balance gradual change gravity, it is characterised in that: the elevator wheel is It is made of cylinder, rotary table, the cylinder combines and overlapping of axles in the two in rotary table smaller diameter face with rotary table.

3. the hoisting mechanism that one kind according to any one of claims 1 or 2 can balance gradual change gravity, it is characterised in that: The spiral helicine rope groove that axis coincides with elevator wheel axis is set on the elevator wheel.

4. the hoisting mechanism that one kind according to claim 1 can balance gradual change gravity, it is characterised in that: the balancing device It is connect by the first rope with the rotary table position of elevator wheel, direction of winding is from rotary table smaller part diametric plane to the more than half diametric plane of rotary table.

5. the hoisting mechanism that one kind according to claim 1 can balance gradual change gravity, it is characterised in that: the weight passes through Second rope is connect with the column part of elevator wheel, and rope rolling direction by winding outward close to rotary table one end.