Heat dissipation structure of drum brake

Abstract

The utility model belongs to the technical field of automobile parts, and particularly relates to a drum brake heat dissipation structure which comprises a barrel, two ends of the barrel are open, a condenser pipe is mounted in the barrel, a liquid outlet of the condenser pipe is connected with a return pipe, the return pipe extends out of the barrel and is connected with a water storage tank, and a circulating pump is mounted in the water storage tank. A liquid inlet of the condenser pipe is connected with a conveying pipe, and the conveying pipe extends out of the barrel and is connected with a circulating pump. Through the cooperation of the circulating pump, the conveying pipe and the backflow pipe, cooling liquid can circularly flow in the condensation pipe so as to achieve heat dissipation and cooling of the drum brake, and compared with an existing water spraying heat dissipation and cooling mode, liquid can be prevented from entering the position between a brake drum and a friction plate, and the service life of the brake drum is prolonged. Therefore, the risks of material deformation, slipping of the brake drum and the friction plate and performance reduction can be reduced, and the problem of water recession is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile parts and components, and particularly relates to a drum brake heat dissipation structure. Background Art

[0002] At present, the brakes used in various types of automobiles are almost all friction brakes, and the friction brakes used on automobiles can be divided into two categories: drum type and disc type. Among them, drum brakes have higher efficiency, simple structure, and more flexible space layout, and are widely used.

[0003] The working principle of automobile drum brakes: the outer surface of the brake friction pad on the brake shoe and the inner cylindrical surface of the brake drum prevent the rotation or rotation tendency of the wheel through mutual friction during braking. Therefore, the automobile braking process is the process of converting kinetic energy into friction heat energy. During the braking process of the automobile, especially emergency braking at high speed and long-term downhill under heavy load conditions, a large amount of heat will be generated due to friction, and the instantaneous temperature of the inner surface of the brake drum and the friction pad will rise sharply. When the temperature of the inner surface of the brake drum and the friction pad is too high, the friction coefficient of the friction pad and the inner surface of the brake drum will drop and fluctuate significantly, thereby greatly weakening the braking performance of the automobile.

[0004] The existing drum brake uses water cooling to dissipate heat. A large water tank is installed on the vehicle and sprayed directly on the outer surface of the brake drum through a pipeline to achieve the purpose of heat dissipation and cooling. Although water cooling can quickly reduce the temperature of the brake drum and friction pad, it is easy to cause deformation of the brake drum and friction pad. If water flows in and out between the brake drum and the friction pad, it is easy to slip and may cause the brake "water decay" problem. Utility Model Content

[0005] The utility model aims to provide a drum brake heat dissipation structure to solve the problem that the water spray heat dissipation method proposed in the above background technology easily leads to deformation of brake materials, slippage of brake drum and friction plate, performance degradation and water decay.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a drum brake heat dissipation structure, including a cylinder, both ends of the cylinder are open-type settings, the outer wall of the cylinder is connected to two mounting blocks at intervals along the circumferential direction, a condenser is installed in the cylinder, the liquid outlet of the condenser is connected to a reflux pipe, the reflux pipe extends out of the cylinder and is connected to a water storage tank, a circulating pump is installed in the water storage tank, a delivery pipe is connected to the liquid inlet of the condenser, the delivery pipe extends out of the cylinder and is connected to the circulating pump, the water storage tank is connected to a water injection pipe, and a pipe plug is threadedly connected to the water injection pipe.

[0007] Preferably, one end of the cylinder away from the condenser is connected to a shell, a connecting plate is connected inside the shell, and a fan is installed on the connecting plate.

[0008] Preferably, a refrigeration fin is connected to the outer wall of the water storage tank.

[0009] Preferably, the cylinder is made of copper.

[0010] Preferably, a large dust-proof net is connected to a side of the cylinder away from the condenser, and the large dust-proof net is used to intercept impurities.

[0011] Preferably, a small dustproof net is connected to a side of the shell away from the condenser, and the small dustproof net is used to intercept impurities.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. Through the cooperation of the circulation pump, the delivery pipe and the return pipe, the coolant can circulate in the condenser to achieve heat dissipation and cooling of the drum brake. Compared with the existing water spraying heat dissipation and cooling method, the utility model can more evenly absorb and take away the heat generated by the brake, making the temperature of the brake more stable. In addition, the utility model adopts the method of circulating the coolant in the condenser to dissipate heat and cool the drum brake, avoiding the liquid from entering between the brake drum and the friction plate, thereby reducing the risk of material deformation, slipping of the brake drum and the friction plate, and performance degradation, and solving the water decay problem.

[0014] 2. The fan can dissipate the heat in the cylinder to the outside, thereby improving the heat dissipation and cooling effect of the drum brake. The refrigeration plate can cool the coolant flowing back from the condenser to the water tank, so that the coolant is kept at a lower temperature, thereby further improving the heat dissipation and cooling effect of the drum brake. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0016] Figure 2 It is a schematic diagram of the partial three-dimensional structure of the utility model Figure 1 .

[0017] Figure 3 It is a schematic diagram of the partial three-dimensional structure of the utility model Figure 2 .

[0018] Figure 4 The utility model is a connection diagram of a water storage tank, a water injection pipe and a pipe plug.

[0019] Figure 5 It is a schematic diagram of the connection between the large dustproof net and the small dustproof net of the utility model.

[0020] The markings in the accompanying drawings are: 1-cylinder, 2-mounting block, 3-condenser, 4-water tank, 5-circulation pump, 6-delivery pipe, 7-return pipe, 8-shell, 9-connecting plate, 10-fan, 11-refrigeration plate, 12-water injection pipe, 13-pipe plug, 14-large dustproof net, 15-small dustproof net, 16-back plate base, 17-brake drum. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0022] Embodiment: A drum brake heat dissipation structure, such as Figure 1-Figure 5 , including a cylinder 1, both ends of the cylinder 1 are open-type settings, the outer wall of the cylinder 1 is connected to two mounting blocks 2 at intervals along the circumferential direction, a condenser 3 is installed in the cylinder 1, a reflux pipe 7 is connected to the liquid outlet of the condenser 3, the reflux pipe 7 extends out of the cylinder 1 and is connected to a water storage tank 4, a circulating pump 5 is installed in the water storage tank 4, a delivery pipe 6 is connected to the liquid inlet of the condenser 3, the delivery pipe 6 extends out of the cylinder 1 and is connected to the circulating pump 5, an end of the cylinder 1 away from the condenser 3 is connected to a shell 8, a connecting plate 9 is connected to the shell 8, a fan 10 is installed on the connecting plate 9, refrigeration plates 11 are connected to the outer walls of the front and rear sides of the water storage tank 4, and a water injection pipe is connected to the water storage tank 4 12, a pipe plug 13 is threadedly connected to the water injection pipe 12, a large dustproof net 14 is connected to the side of the cylinder 1 away from the condenser 3, and impurities can be intercepted by the large dustproof net 14 to prevent impurities from entering the cylinder 1 and damaging the condenser 3, thereby protecting the condenser 3, a small dustproof net 15 is connected to the side of the shell 8 away from the condenser 3, and impurities can be intercepted by the small dustproof net 15 to prevent impurities from entering the shell 8 and damaging the fan 10, thereby protecting the fan 10, the cylinder 1 is made of copper, and the copper cylinder 1 has excellent thermal conductivity, can quickly conduct heat from a high-temperature area to a low-temperature area, and has a good heat dissipation effect.

[0023] First, install the cylinder 1 on the vehicle suspension through the mounting block 2, so that the cylinder 1 and the condenser 3 are in contact with the side of the back plate base 16 facing away from the brake drum 17, and then install the water tank 4 on the vehicle suspension, unscrew the pipe plug 13 from the water injection pipe 12, and inject the coolant into the water tank 4 through the water injection pipe 12. After the coolant injection is completed, turn the pipe plug 13 back to the water injection pipe 12 to block the water injection pipe 12 to prevent the coolant from overflowing. The circulating pump 5 can work to input the coolant in the water tank 4 into the condenser 3 through the delivery pipe 6, and the coolant in the condenser 3 is then returned to the reflux pipe. 7 flows back to the water storage tank 4, so that the coolant can circulate in the condenser 3 to achieve heat dissipation and cooling of the drum brake; compared with the existing water spray heat dissipation and cooling method, the present device can more evenly absorb and take away the heat generated by the brake, making the temperature of the brake more stable. The present device allows the coolant to circulate in the condenser 3 to dissipate heat and cool the drum brake, avoiding the liquid from entering between the brake drum 17 and the friction plate, thereby reducing the risk of material deformation, brake drum 17 and friction plate slippage and performance degradation, and solving the water decay problem. The fan 10 can guide the heat in the cylinder 1 to the outside, thereby improving the heat dissipation and cooling effect of the drum brake, and the cooling plate 11 can cool the coolant flowing back from the condenser 3 to the water storage tank 4, so that the coolant is kept at a lower temperature, thereby further improving the heat dissipation and cooling effect of the drum brake.

[0024] The above-mentioned embodiments only express the preferred implementation of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications, improvements and substitutions can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A drum brake heat dissipation structure, characterized in that: The invention comprises a cylinder (1), both ends of which are open-ended, and the outer wall of the cylinder (1) is connected to two mounting blocks (2) at intervals along the circumferential direction, a condenser (3) is installed in the cylinder (1), a return pipe (7) is connected to the liquid outlet of the condenser (3), the return pipe (7) extends out of the cylinder (1) and is connected to a water storage tank (4), a circulating pump (5) is installed in the water storage tank (4), a delivery pipe (6) is connected to the liquid inlet of the condenser (3), the delivery pipe (6) extends out of the cylinder (1) and is connected to the circulating pump (5), a water injection pipe (12) is connected to the water storage tank (4), and a pipe plug (13) is threadedly connected to the water injection pipe (12).

2. A drum brake heat dissipation structure according to claim 1, characterized in that: One end of the cylinder (1) away from the condensation pipe (3) is connected to a shell (8), a connecting plate (9) is connected inside the shell (8), and a fan (10) is installed on the connecting plate (9).

3. A drum brake heat dissipation structure according to claim 1, characterized in that: A refrigeration fin (11) is connected to the outer wall of the water storage tank (4).

4. A drum brake heat dissipation structure according to claim 1, characterized in that: The cylinder (1) is made of copper.

5. The drum brake heat dissipation structure according to claim 2, characterized in that: A large dustproof net (14) is connected to a side of the cylinder (1) away from the condenser tube (3), and the large dustproof net (14) is used to intercept impurities.

6. A drum brake heat dissipation structure according to claim 2, characterized in that: A small dustproof net (15) is connected to a side of the shell (8) away from the condenser tube (3), and the small dustproof net (15) is used to intercept impurities.

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