CN201103640Y

CN201103640Y - V-shaped groove friction type braking structure

Info

Publication number: CN201103640Y
Application number: CNU2007200568212U
Authority: CN
Inventors: 辛全忠
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-09-11
Filing date: 2007-09-11
Publication date: 2008-08-20
Anticipated expiration: 2017-09-11

Abstract

The utility model relates to a friction brake structure of a V-shaped groove, which comprises a brake top block and a brake turntable; wherein, V-shaped surface contact exists between the brake top block and the brake turntable, and the contact surface between the brake top block and the brake turntable is provided with a friction plate. The utility model takes full use of theoretical mechanics principles to design the contact surface between the brake top block and the brake turntable into V-shaped structure for replacing the traditional plane contact, thus effectively reducing the size of the brake turntable, saving the material of the brake turntable and reducing cost on one hand, and effectively increasing a brake force F under the condition that the driving pressure N and the friction coefficient f are kept unchanged on the other hand, so the energy consumption for driving hydraulic, pneumatic or electric devices can be saved and energy sources can also be saved. The friction brake structure of the V-shaped groove provided by the utility model can be widely applied in elevators, lifting machines, vehicles and other mechanical device fields.

Description

A kind of V-shaped groove friction type brake structure

Technical field

The utility model relates to the mechanical brake art, refers in particular to a kind of V-shaped groove friction type brake structure.

Background technique

At present, the mechanical friction type break has been widely used in elevator, Hoisting Machinery, vehicle and other various machinery field.With reference to Fig. 1, the brake structure of traditional frictin braek generally includes a braking jacking block 1 and a braking wheel disc 2, and between braking jacking block 1 and braking wheel disc 2, friction plate 3 is set, order about braking jacking block 1 top to braking wheel disc 2 by the driving of hydraulic pressure, air pressure or electrical equipment, utilize the frictional force of friction plate 3 to make braking wheel disc 2 stop action.Because between braking jacking block 1 and the braking wheel disc 2 is plane contact, by the theoretical mechanics principle analysis as can be known, if it is N that hydraulic pressure, air pressure or electrical equipment are given the driving pressure of braking jacking block 1, friction factor is f, and then the frictional force that produces between the friction plate 3 is braking force F=N*f.Formula as can be known thus: under the situation that does not change friction factor f, hydraulic pressure, air pressure or electronic driving pressure N size directly affect the size of braking force F, when the bigger braking force F of needs, then need the driving energy consumption of more hydraulic pressure, air pressure or electrical equipment.

The model utility content

The main purpose of the utility model provides a kind of V-shaped groove friction type brake structure, and it can keep strengthening braking force effectively under the constant situation of driving pressure and friction factor, thereby saves the driving energy consumption of hydraulic pressure, air pressure or electrical equipment, energy saving,

Another purpose of the utility model provides a kind of V-shaped groove friction type brake structure, and it can effectively reduce the size of braking wheel disc, saves the material of braking wheel disc, and then reduces cost.

For achieving the above object, the utility model adopts following technological scheme:

A kind of V-shaped groove friction type brake structure comprises that one brakes a jacking block and a braking wheel disc, be the V-arrangement surface contact structure between braking jacking block and the braking wheel disc, and the surface of contact of braking jacking block and braking wheel disc is provided with friction plate.

Convex with a V-arrangement projection on the described braking jacking block, corresponding is provided with a V-shaped groove at braking wheel disc fovea superior, and the intercalation of described V-arrangement projection is gone in the V-shaped groove.

Be concaved with a V-shaped groove on the described braking jacking block, corresponding is provided with a V-arrangement projection in braking wheel disc epirelief, and the intercalation of described V-arrangement projection is gone in the V-shaped groove.

Stressing conditions during below to the contact of employing V-arrangement face is analyzed as follows:

With reference to Fig. 4, wherein, the retardation pressure that N applies for the braking jacking block, F ' is for acting on the pressure of braking wheel disc rubbing surface, and A is the angle of V-shaped groove.

The friction brake force that the V-shaped groove single face produces: F1=f*F '

According to theoretical mechanics principle F '=(N/2)/SIN (A/2)

Then the braking of Chan Shenging is made a concerted effort: F=2F1=f*F '=f*N/SIN (A/2)

Because of SIN (A/2) smaller or equal to 1, so select rational V-shaped groove included angle A for use, just can be implemented under the situation that does not increase braking jacking block pressure, obtain greater than the braking force that adopts plane (A=180 °).

In sum, the utility model beneficial effect compared with prior art is: make full use of the theoretical mechanics principle, the surface of contact between braking jacking block and the braking wheel disc is made as v-shaped structure, replaced traditional plane contact.Reduce the size of braking wheel disc on the one hand effectively, saved the Brake drum disk material, fallen end cost; On the other hand, realized keeping strengthening braking force F effectively under the constant situation of driving pressure N and friction factor f, thereby saved the driving energy consumption of hydraulic pressure, air pressure or electrical equipment, energy saving.V-shaped groove friction type brake structure provided by the utility model can be widely used in elevator, Hoisting Machinery, vehicle and other various machinery field.

Description of drawings

Fig. 1 is the cross sectional view of prior art;

Fig. 2 is first kind of embodiment's of the utility model a three-dimensional diagrammatic sketch;

Fig. 3 is first kind of embodiment's of the utility model a cross sectional view;

Fig. 4 is first kind of embodiment's of the utility model space-load figure;

Fig. 5 is second kind of embodiment's of the utility model a cross sectional view;

The accompanying drawing identifier declaration:

1, braking push block 2, braking wheel disc 3, friction plate

10 (10 '), braking jacking block 11, V-arrangement projection 11 ', V-shaped groove

20 (20 '), braking wheel disc 21, V-shaped groove 21 ', the V-arrangement projection

30, friction plate

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing and specific embodiment:

With reference to first kind of embodiment's of the utility model shown in Fig. 2 to Fig. 3 concrete structure, comprise a braking jacking block 10, a braking wheel disc 20 and a friction plate 30.Braking jacking block 10 can be driven and up and down by hydraulic pressure, air pressure or electrical equipment in the present embodiment, and braking wheel disc 20 is rotating wheel disc.The outer surface of braking wheel disc 20 is provided with a whole circle V-shaped groove 21, corresponding is provided with a V-arrangement projection 11 on braking jacking block 10, this V-arrangement projection 11 is intercalated in the V-shaped groove 21, and V-arrangement projection 11 is identical with the angle of V-shaped groove 21, and friction plate 30 is fixed on the two V-arrangement surfaces of V-arrangement projection 11.

When being in non-braking state, the friction plate 30 on the braking jacking block 10 keeps certain interval with V-shaped groove 21.When needs are braked, braking jacking block 10 is depressed downwards, cause the friction plate 30 on the V-arrangement projection 11 to be close to, utilize the friction between friction plate 30 and the V-shaped groove 21 to stop the rotation of braking wheel disc 20, thereby reach purpose 20 brakings of braking wheel disc with two surfaces of V-shaped groove 21.

Show the stressing conditions of the V-shaped groove friction catch structure of this practicality example with reference to Fig. 4, wherein, the retardation pressure that N applies for braking jacking block 10, F ' is for acting on the pressure of braking wheel disc 20 rubbing surfaces, and A is the angle of V-shaped groove 21.

The friction brake force that V-shaped groove 21 single faces produce: F1=f*F '

According to theoretical mechanics principle F '=(N/2)/SIN (A/2)

Because of SIN (A/2) smaller or equal to 1, so select rational V-shaped groove included angle A for use, just can be implemented under the situation that does not increase braking jacking block 10 retardation pressure N, obtain greater than the braking force F that adopts plane (A=180 °).

With reference to Fig. 5 is another embodiment's of the utility model concrete structure, present embodiment and last embodiment's difference is: its braking jacking block 10 ' on be provided with V-shaped groove 11 ', and the braking wheel disc 20 ' on be provided with V-arrangement projection 21 ', 30 of friction plates be fixed in V-shaped groove 11 ' two surfaces on.So, though exchanged the position of V-shaped groove and V-arrangement projection, braking jacking block 10 ' with brake wheel disc 20 ' between still be the V-arrangement surface contact structure, the braking effect of its generation is identical with last embodiment.

Of the present utility model focusing on: make full use of the theoretical mechanics principle, the surface of contact between braking jacking block and the braking wheel disc is made as v-shaped structure, replaced traditional plane contact.Reduced the size of braking wheel disc on the one hand effectively, saved the Brake drum disk material, reduced cost; On the other hand, realized keeping strengthening braking force F effectively under the constant situation of driving pressure N and friction factor f, thereby saved the driving energy consumption of hydraulic pressure, air pressure or electrical equipment, energy saving.V-shaped groove friction type brake structure provided by the utility model can be widely used in elevator, Hoisting Machinery, vehicle and other various machinery field.

The above, it only is the preferred embodiment of a kind of V-shaped groove friction type of the utility model brake structure, be not that technical scope of the present utility model is imposed any restrictions, so every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any trickle modification, equivalent variations and modification that above embodiment did.

Claims

1, a kind of V-shaped groove friction type brake structure comprises a braking jacking block and a braking wheel disc, and it is characterized in that: braking between jacking block and the braking wheel disc is the V-arrangement surface contact structure, and the braking jacking block is provided with friction plate with the surface of contact of braking wheel disc.

2, a kind of V-shaped groove friction type brake structure according to claim 1 is characterized in that: convex with a V-arrangement projection on the described braking jacking block, corresponding is provided with a V-shaped groove at braking wheel disc fovea superior, and the intercalation of described V-arrangement projection is gone in the V-shaped groove.

3, a kind of V-shaped groove friction type brake structure according to claim 1 is characterized in that: be concaved with a V-shaped groove on the described braking jacking block, corresponding is provided with a V-arrangement projection in braking wheel disc epirelief, and the intercalation of described V-arrangement projection is gone in the V-shaped groove.