Radiating enhanced disc elevator brake

Abstract

The utility model discloses a heat dissipation enhanced disc elevator brake, which relates to the technical field of brakes and comprises a brake body, a connecting bottom plate fixed at the output end of the brake body and a brake shoe fixed on one side, far away from the brake body, of the connecting bottom plate. The brake body drives the connecting bottom plate to move left and right; a heat dissipation groove is formed in the center of the connecting bottom plate, a top opening of the heat dissipation groove is sealed by the brake shoe, the two ends of the heat dissipation groove extend outwards to be communicated with the outside, and a heat dissipation channel with two open ends is defined by the heat dissipation groove and the brake shoe; cooling fins are installed in the heat dissipation grooves and abut against the bottoms of the brake shoes, and the heat dissipation channels cannot be sealed. A heat dissipation hole is formed in the center of the brake shoe and communicates with the heat dissipation groove. Heat generated in the braking process can be efficiently discharged through the heat dissipation channel, and the temperature of the brake disc and the brake shoe is effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of brake, especially relates to a heat dissipation enhanced disc type elevator brake. BACKGROUND

[0002] As a key component of hoisting machinery, the performance of disc type elevator brake directly affects the safety and reliability of the equipment. During frequent braking, a large amount of heat is generated between the brake disc and the brake shoe due to friction. If this heat cannot be dissipated in time, the surface temperature of the brake disc will be too high, and after experiencing multiple thermal cycles, the brake disc is prone to thermal fatigue cracks, and in severe cases, even breakage, which seriously reduces the service life and safety performance of the brake. In addition, the thermal stress concentration phenomenon at the center of the brake shoe is also an important factor affecting the braking effect, which leads to uneven stress distribution on the surface of the brake shoe, further weakening the braking efficiency. SUMMARY

[0003] The utility model aims at providing a heat dissipation enhanced disc type elevator brake, which effectively improves the heat dissipation efficiency, reduces the generation of thermal fatigue cracks, and improves the stress distribution of the brake shoe, thereby improving the overall performance and safety of the brake.

[0004] To achieve the above-mentioned purpose, the utility model provides a heat dissipation enhanced disc type elevator brake, which comprises a brake body, a connecting bottom plate fixed at the output end of the brake body, and a brake shoe fixed at the side of the connecting bottom plate away from the brake body. The brake body drives the left and right movement of the connecting bottom plate, so as to press or loosen the brake disc, realizing the braking and unbraking of the brake disc. A heat dissipation groove is formed at the center of the connecting bottom plate, the top opening of the heat dissipation groove is closed by the brake shoe, and the two ends of the heat dissipation groove extend outward to communicate with the outside. The heat dissipation groove and the brake shoe form a heat dissipation channel with open ends. Heat dissipation fins are installed in the heat dissipation groove, which abut against the bottom of the brake shoe without closing the heat dissipation channel. A heat dissipation hole is formed at the center of the brake shoe, which communicates with the heat dissipation groove.

[0005] After adopting the above structure, the heat generated during braking can be efficiently discharged through the heat dissipation channel, effectively reducing the temperature of the brake disc and the brake shoe. The heat dissipation fins not only accelerate the rapid transfer of heat on the brake shoe, but also increase the heat dissipation area, thereby effectively improving the heat dissipation efficiency and reducing the generation of thermal fatigue cracks. By forming a heat dissipation hole at the center of the brake shoe, the heat dissipation capacity is further enhanced, and the heat stress distribution inside the brake shoe is also improved, reducing the thermal stress concentration phenomenon.

[0006] Further, the area of the brake shoe needs to meet the following conditions: ; wherein, A is the area of the brake shoe, A is the area of the heat dissipation hole, The area of the brake shoe is the same as that of the previous brake shoe.

[0007] Further, the heat dissipation fin comprises a top heat conduction fin abutting against the bottom of the brake shoe and a heat dissipation fin extending to the bottom of the heat dissipation groove; the top heat conduction fin abuts against the bottom of the brake shoe, and the heat dissipation fin is located in the heat dissipation groove.

[0008] Further, the heat dissipation fin further comprises a bottom support fin located at the bottom of the heat dissipation fin and in contact with the bottom of the heat dissipation groove.

[0009] Further, the heat dissipation hole is provided with a heat dissipation cylinder protruding towards the heat dissipation groove, and the heat dissipation cylinder is inserted into the heat dissipation channel.

[0010] Further, a plurality of through holes are formed in the side wall of the heat dissipation cylinder.

[0011] Further, the side wall of the heat dissipation cylinder is provided with a heat dissipation rib plate protruding towards the center hole.

[0012] Further, the heat dissipation fins are arranged in parallel and divide the heat dissipation channel into a plurality of strip-shaped channels arranged in parallel and open at both ends.

[0013] After the above technical scheme is adopted, the advantageous effects of the present application are as follows:

[0014] The present application solves the technical problem that the friction between the brake disc and the brake shoe generates a large amount of heat, which seriously reduces the service life and safety performance of the brake, and the heat stress concentration at the center of the brake shoe affects the braking effect. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structural schematic view of the heat dissipation enhanced disc type elevator brake of the present application;

[0016] Figure 2 is Figure 1 a structural schematic view of the connection between the bottom plate and the brake shoe.

[0017] Figure 3 is a structural diagram of the connecting bottom plate;

[0018] Figure 4 is a structural diagram of the brake shoe.

[0019] In the figure, 1, the brake body, 2, the connecting bottom plate, 21, the heat dissipation groove, 3, the brake shoe, 31, the heat dissipation hole, 32, the heat dissipation cylinder, 321, the through hole, 322, the heat dissipation rib plate, 4, the heat sink, 41, the top heat conduction fin, 42, the heat dissipation fin, 43, the bottom support fin. DETAILED DESCRIPTION

[0020] The utility model is further described below in combination with the drawings.

[0021] The directions involved in the specification are based on the normal working direction of the heat dissipation enhanced disc type elevator brake, and do not limit the directions during storage and transportation. The directions only represent relative positional relationships and do not represent absolute positional relationships.

[0022] As shown in Figure 1 A heat dissipation enhanced disc type elevator brake includes a brake body 1, a connecting bottom plate 2 fixed at the output end of the brake body 1, and a brake shoe 3 fixed at the side of the connecting bottom plate 2 away from the brake body 1. The brake body 1 drives the connecting bottom plate 2 to move left and right, so that the brake shoe 3 is pressed against or loosened from the brake disc, thereby achieving braking and unbraking of the brake disc. The brake body 1 can adopt the structure in the prior art, such as the patent structure disclosed in Chinese patent CN 106115533 A, or other structures. The present embodiment does not limit this.

[0023] A heat dissipation groove 21 is formed at the center of the connecting bottom plate 2. The top opening of the heat dissipation groove 21 is closed by the brake shoe 3, and the two ends of the heat dissipation groove 21 extend outward to communicate with the outside. The heat dissipation groove 21 and the brake shoe 3 form a heat dissipation channel with open ends. Such a design allows the heat generated during braking to be efficiently discharged through the heat dissipation channel, effectively reducing the temperature of the brake disc and the brake shoe 3. A heat sink 4 is arranged in the heat dissipation groove 21. The top heat conduction fin 41 of the heat sink 4 is in close contact with the bottom of the brake shoe 3, while ensuring that the heat dissipation channel remains unobstructed. The heat sink 4 not only accelerates the rapid transfer of heat on the brake shoe 3, but also increases the heat dissipation area.

[0024] The structure of the heat dissipation fin 4 can adopt a sheet structure or a grid structure. In the embodiment, in order to improve the heat dissipation effect, the heat dissipation fin 4 includes a top heat conduction fin 41 and a heat dissipation fin 42 extending to the bottom of the heat dissipation groove 21. The top heat conduction fin 4 abuts against the bottom of the brake shoe 3 and directly absorbs the heat of the bottom of the brake shoe 3. The heat dissipation fin 42 is located in the heat dissipation groove and transmits the heat on the top heat conduction fin 4 to the heat dissipation groove 21, and finally discharges through the heat dissipation channel.

[0025] In order to increase the stability of the heat dissipation fin 4, the heat dissipation fin 4 further includes a bottom support fin 43 located at the bottom of the heat dissipation fin 42 and in contact with the groove bottom of the heat dissipation groove 21 and consistent in width, thereby achieving stable support.

[0026] Further, the heat dissipation fins 42 are arranged in parallel and divide the heat dissipation channel into a plurality of strip-shaped channels arranged in parallel and open at both ends. Such arrangement is conducive to uniform distribution and rapid discharge of heat, avoiding local overheating.

[0027] The brake shoe 3 has a heat dissipation hole 31 in the center, which is in communication with the heat dissipation groove 21. This further enhances the heat dissipation capacity and helps to improve the thermal stress distribution inside the brake shoe 3 and reduce the thermal stress concentration phenomenon.

[0028] In order to meet the heat dissipation requirement while maintaining sufficient braking force, the area of the brake shoe 3 needs to meet certain conditions, that is, the area of the brake shoe 3 needs to meet the following conditions: ; wherein, A is the area of the brake shoe 3, B is the area of the heat dissipation hole 31, C is the area of the previous brake shoe 3; to ensure that the braking performance is not affected.

[0029] In order to further improve the heat dissipation efficiency, the heat dissipation hole 31 is provided with a heat dissipation cylinder 32 protruding towards the heat dissipation groove 21, which is inserted into the heat dissipation channel, thereby facilitating the conduction of heat from the center of the heat concentration to the heat dissipation groove 21.

[0030] In order to further enhance the heat dissipation effect, a plurality of through holes 321 are designed on the side wall of the heat dissipation cylinder 32, which increase the contact area of the heat dissipation cylinder 32 with the surrounding air and promote the rapid dissipation of heat. In addition, the side wall of the heat dissipation cylinder 32 is also provided with heat dissipation ribs 322 protruding towards the center hole, which further increase the heat dissipation area and promote the rapid dissipation of heat.

[0031] The utility model discloses a heat dissipation enhancement type disc type elevator brake solves the technical problem that the friction between brake disc and brake shoe produces a large amount of heat, seriously reduces the service life and safety performance of brake, and the heat stress concentration of brake shoe center influences brake effect, through the optimization structure design of the utility model, effectively promotes the heat dissipation efficiency, reduces the generation of thermal fatigue crack, improves the stress distribution of brake shoe, thereby improves the overall performance and safety of brake.

[0032] Of course, the above description is not a limitation of the utility model, and the utility model is not limited to the above examples. Changes, modifications, additions or replacements made by the skilled in the art within the essential scope of the utility model should also be within the protection scope of the utility model.

Claims

1. A heat dissipation enhanced disc type hoist brake, comprising a brake body, a connecting bottom plate fixed at an output end of the brake body, and a brake shoe fixed at a side of the connecting bottom plate away from the brake body; the brake body drives the connecting bottom plate to move left and right so as to press or release a brake disc, thereby realizing braking and unbraking of the brake disc; characterized in that: a heat dissipation groove is formed at a central position of the connecting bottom plate, a top opening of the heat dissipation groove is closed by the brake shoe, and both ends of the heat dissipation groove extend outward to communicate with the outside, the heat dissipation groove and the brake shoe form a heat dissipation channel with both ends open; a heat dissipation fin is installed in the heat dissipation groove, the heat dissipation fin abuts against a bottom of the brake shoe and does not close the heat dissipation channel; a heat dissipation hole is formed at a center of the brake shoe, and the heat dissipation hole communicates with the heat dissipation groove. The heat dissipation fin comprises a top heat conduction fin abutting against the bottom of the brake shoe and a heat dissipation fin extending to a groove bottom of the heat dissipation groove; the top heat conduction fin abuts against the bottom of the brake shoe, and the heat dissipation fin is located in the heat dissipation groove.

2. A heat sink enhanced disc brake for a hoist according to claim 1, wherein: The area of the brake shoe needs to satisfy the following condition: ; wherein, is the area of the brake shoe, is the area of the heat dissipation hole, is the area of the conventional brake shoe.

3. The heat sink enhanced disc brake of claim 1 wherein: The heat dissipation fin further comprises a bottom support fin located at a bottom of the heat dissipation fin and in contact with and consistent in width with the groove bottom of the heat dissipation groove.

4. The heat sink enhanced disc brake of claim 3, wherein: A heat dissipation cylinder protruding towards the heat dissipation groove is arranged on the heat dissipation hole, and the heat dissipation cylinder is inserted into the heat dissipation channel.

5. The heat sink enhanced disc brake of claim 3 wherein: A plurality of through holes are formed on a side wall of the heat dissipation cylinder.

6. A heat sink enhanced disc brake of claim 5 wherein: A heat dissipation rib plate protruding towards a central hole of the heat dissipation cylinder is arranged on the side wall of the heat dissipation cylinder.

7. A heat sink enhanced disc brake of claim 6 wherein: The heat dissipation fins are arranged in parallel and divide the heat dissipation channel into a plurality of strip-shaped channels arranged in parallel and with both ends open.

8. The heat sink enhanced disc brake of claim 3 wherein: ​

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