CN2157355Y

CN2157355Y - Self-cooled braked wheel

Info

Publication number: CN2157355Y
Application number: CN 93200065
Authority: CN
Inventors: 吴登庆
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-01-03
Filing date: 1993-01-03
Publication date: 1994-02-23
Anticipated expiration: 2003-01-03

Abstract

The utility model relates to a self-cooled braked wheel, particularly a braked wheel used for an outer block type brake. An outer circumferential surface is used as a braked friction surface. The self-cooled braked wheel is characterized in that a heat pipe in which liquid phase working medium is arranged in a wheel body; the end surface of an outer wheel edge is provided with an end surface wind wheel; a cooling fin is provided with a wheel inner wind wheel. The utility model has the advantages of simple structure and reasonable design. Compared with an ordinary braked wheel with the same diameter, the ability for radiating heat and lowering temperature is improved by more than two times. The pressure in the heat pipe is adjusted, which can lead the temperature of the braked wheel to be stable below 105 DEG C in the process of braking. The utility model can conveniently replace an existing used braked wheel whose temperature is out of standard, and a brake does not need to be replaced or modified.

Description

Self-cooled braked wheel

The utility model relates to the self-cooled Brake drum of a kind of outer peripheral surface as brake area, especially is applied to the Brake drum of outer block brake.

Because the remarkable advantage that outer block brake wheel is had, it is widely used in industrial production, YWZ type break particularly, in handling machinery, occupy main status, this class break all be utilize friction plate and Brake drum mutually mutual friction absorb and change into mechanical energy, therefore, in braking process, can produce a large amount of heat, the friction surface temperature is raise, bigger at deceleration loading inertia, under the braking endurance operating mode long or frequently braking, the friction surface temperature of Brake drum reaches more than 170 ℃, even reach 300 ℃, and temperature is too high, and the softening tackiness agent that can occur rubbing flows out, phenomenons such as glazing charing, thereby friction factor is reduced, and wearing and tearing sharply increase, and braking ability worsens.

The purpose of this utility model provides a kind of heat conduction that has, the self-cooled Brake drum of heat radiation facility, the common Brake drum of its Brake drum friction surface temperature rise ratio reduces by 1/2, and per hour the braking be no less than 10 times, the period of braking water holdup is not more than under 6% the operating mode, the Brake drum surface temperature is not more than 150 ℃, satisfies the requirement of ZBD93008-90 standard.

Self-cooled Brake drum described in the utility model is by Brake drum, wind wheel is formed in end face wind wheel and the wheel, the temperature of friction surface when braking in order to reduce Brake drum, in the braking wheel body, be provided with the heat pipe for thermal conductivity system, concentrate on the heat of braking on the wheel rim be sent to spoke and on radiated rib on, be provided with radiated rib on the spoke to increase heat exchange area to air.Be arranged on the pectinid impeller in braking wheel body end face and the wheel, increased the relative velocity of air and Brake drum heat-delivery surface, improved the convection transfer rate of air, thereby made the heat radiation cooling capacity of Brake drum improve several times, temperature can be reduced to original 1/2～1/3.

The utility model is specially adapted to outer block brake, and compares with the identical common Brake drum of diameter, and the radiating and cooling ability improves more than 2 times.And, the Brake drum temperature is stabilized in below 105 ℃ in braking process by adjusting the pressure in the heat pipe.Reasonable in design, simple in structure, and can substitute the Brake drum of the temperature exceeding standard that uses at present easily and do not need to change and revise break.

With reference to the accompanying drawings self-cooled Brake drum structure described in the utility model is carried out detailed narration below.

Fig. 1. self-cooled Brake drum structural representation.

Fig. 2. the half sectional view of Brake drum (B-B).

Fig. 3. the end view (E to) of wind wheel in the wheel.

Fig. 4. the A of Fig. 3 is to office's sectional view.

Fig. 5. the end view of end face wind wheel (D to).

Fig. 6. the left view of Fig. 5.

Fig. 7. the mounting structure schematic representation of centrifugal end face wind wheel.

Fig. 8. the C-C sectional view of Fig. 7.

Wherein: 1. Brake drum 2. end face wind wheels 3. are taken turns interior wind wheel

4. wheel rim 5. cavitys 6. spokes rub

7. spout 8. radiated ribs 9. outer hubs

10. interior hub 11. fan blades 12. retaining rings

13. hub 15. outer wheel discs in the fan blade 14.

16. interior wheel disc 17. stators 18. retaining rings

Embodiment 1.

Present embodiment is the structure of the self-cooled Brake drum of band heat pipe.

Between the friction wheel rim (4) of Brake drum (1) and the braking wheel body is airtight interference fit, its material adopts AlZnMgCu high strength 157 aluminum alloys that contain beryllium, middle at the braking wheel body is triangular pockets (5) every being distributed with several sections sections, its triangle bottom surface is the internal surface of friction wheel rim, there is the slit shape cavity of same interval quantity to communicate in the spoke (6) with triangular cavity, every section cavity all is provided with a spout (7) on spoke, in order to inject liquid phase working fluid, and in cavity, cause certain pressure, seal spout then, the saturation pressure value when the qualification maximum temperature value that the pressure in the cavity equals Brake drum deducts 1～5 ℃ of saturation temperature for liquid phase working fluid.According to the Brake drum difference of high limiting temperature, liquid phase working fluid can be a water, ammonia or fluorine Lyons etc.On the spoke of Brake drum, radially be provided with radiated rib (8), to increase the heat diffusion area of Brake drum.End face wind wheel (2) is fixed on the wheel rim of braking wheel body, by outer hub (9), interior hub (10), fan blade (11), retaining ring (12) is formed, and the end face wind wheel is wide to be 50～100mm, external diameter is greater than Brake drum external diameter 50～100mm, internal diameter is about 1/2 of Brake drum external diameter and Brake drum hub diameter sum, and fan blade and axis are fixed between the inside and outside hub at an angle, and wind wheel is an axial flow.Wind wheel (3) is made up of fan blade (13) and interior hub (14) in the wheel, is fixed on the radiated rib of spoke, and wind wheel is an axial flow.When Brake drum rotates, under the effect of fan blade, force the heat-delivery surface of blows air over Brake drum, interior flow path direction can be to detach Brake drum, also can be to blow to Brake drum, answers consistent if the fan blade torsional direction of end face wind wheel two wind wheels is all installed in both sides.

Embodiment 2.

Present embodiment is the structure of centrifugal end face wind wheel self-cooled Brake drum.

Adorn a centrifugal pectinid impeller at the wheel body end face of former Brake drum, it is by interior wheel disc (16), outer wheel disc (15), and stator (17), retaining ring (18) is formed, and when Brake drum rotated, air sucked from center hole and flows to exhaust port, blows to the Brake drum surface.

Claims

1, a kind of self-cooled Brake drum that is made of wind wheel (3), end face wind wheel (2), radiated rib (8), heat pipe in Brake drum (1), the wheel is characterized in that:

(1) heat pipe is by being that slit shape cavity in triangular pockets (5) and the spoke (6) is communicated with formation every the section that distributes in the middle of the braking wheel body, is marked with liquid phase working fluid in the cavity;

(2) wind wheel is by fan blade (13) in the wheel, and interior hub (14) constitutes, and is fixed on the radiated rib (8);

(3) the end face wind wheel is by fan blade (11), outer hub (9), and interior hub (10), retaining ring (12) constitutes, and is fixed on the wheel rim of braking wheel body;

(4) radiated rib radially is fixed on the spoke (6).

2, a kind of by Brake drum (1), interior wheel disc (16), outer wheel disc (15), stator (17), the self-cooled Brake drum that retaining ring (18) constitutes is characterized in that: by interior wheel disc, outer wheel disc, stator constitute centrifugal pectinid impeller, are fixed in by retaining ring on the end face of braking wheel body.