CN210978293U

CN210978293U - Drum brake with good heat dissipation performance

Info

Publication number: CN210978293U
Application number: CN201921686467.0U
Authority: CN
Inventors: 乔爱民
Original assignee: Gaoyou Jingzheng Machinery Manufacturing Co ltd
Current assignee: Gaoyou Jingzheng Machinery Manufacturing Co ltd
Priority date: 2019-10-10
Filing date: 2019-10-10
Publication date: 2020-07-10
Anticipated expiration: 2029-10-10

Abstract

The utility model discloses a drum brake with good heat dispersion, which belongs to the technical field of drum brakes and comprises a fixed plate, wherein a drum body is movably arranged at the outer side of the fixed plate, an auxiliary gear is meshed with the inner wall at the right side of the inner gear ring, a rotating rod is inserted in the center of the auxiliary gear, when the drum body rotates along with a hub, the drum body rotates to drive the inner gear ring and the auxiliary gear to rotate, the auxiliary gear rotates to drive the rotating rod and the gear, the rotating rod drives a fan blade to rotate to suck external air into the inner cavity of the drum body, the gear drives a mounting sleeve and a wind plate, the wind plate rotates to accelerate the circulation speed of the air in the inner cavity of the drum body, the air entering the inner cavity of the drum body is blown to heat dissipation holes, the air in the inner cavity of the heat dissipation holes enters into a mounting groove to cool a base plate and a heat insulation plate, the heat insulation plate is, the cooling speed of the friction plate is increased, and finally air is discharged through the air outlet.

Description

Drum brake with good heat dissipation performance

Technical Field

The utility model relates to a drum brake technical field specifically is a drum brake that heat dispersion is good.

Background

The brake drum has the advantages of simple structure, good braking effect, low braking stroke and the like, and is widely applied to the braking field of the small car, but when the brake drum brakes, large heat can be generated between the brake pad and the friction plate, the friction plate and the brake pad are in a high-temperature state for a long time, the service life of the brake pad and the brake pad is easily shortened, the maintenance cost of the car is improved, the high temperature can influence the braking performance of the brake pad, and potential safety hazards are caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a drum brake that heat dispersion is good to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a drum brake with good heat dissipation performance comprises a fixed plate, wherein a drum body is movably arranged on the outer side of the fixed plate, an annular groove is formed in the front end of the inner wall of the periphery of the drum body, an inner gear ring is connected in the annular groove in a clamping manner, an auxiliary gear is meshed with the inner wall of the right side of the inner gear ring, a rotating rod is inserted in the center of the auxiliary gear, a gear is meshed with the left end of the auxiliary gear, a slot which is communicated with the front and the back of the gear is formed in the center of the gear, a mounting sleeve is connected in the slot in a clamping manner, the back end face of the mounting sleeve is connected with the outer wall of the front side of the fixed plate through a bearing, heat dissipation fins are arranged at the rear ends of the top and the bottom inner walls of the drum body, friction plates are fixedly connected to the opposite sides of the two sets of, the installation sleeve outer wall annular array is provided with three aerofoil of group, the aerofoil is located between brake pump and the gear, terminal surface rectangle array is provided with four mounting holes of group before the fixed plate, four groups the mounting hole is located two sets of brake pump outsides, the bull stick rear end passes through bearing and fixed plate front side outer wall connection, bull stick outer wall annular array is provided with four group's flabellums, just the flabellum is located the auxiliary gear front side, the drum body and the auxiliary gear front side outer wall all are provided with the through-hole that link up from beginning to end.

Further, the brake block includes the base plate of being connected with the brake pump, the base plate top is provided with the heat insulating board, base plate top outer wall is provided with the mounting groove, the heat insulating board is run through at the mounting groove top, mounting groove bottom inner wall fixedly connected with supporting spring, supporting spring top fixedly connected with clutch blocks, the clutch blocks top extends to heat insulating board top outer wall, base plate bottom outer wall evenly is provided with the louvre, just the louvre top extends to the mounting groove inner chamber.

Further, the diameter of the friction block is smaller than that of the mounting groove, four groups of grooves are formed in the annular array of the inner wall of the periphery of the mounting groove, sliding blocks are connected in the grooves in a sliding mode, and one ends, opposite to the four groups of sliding blocks, of the four groups of sliding blocks are fixedly connected with the friction block.

Furthermore, five to seven groups of heat dissipation fins are arranged on the left and right sides of the outer walls of the two groups of friction plates on the opposite sides, and inclined air holes are uniformly formed in the outer walls of the heat dissipation fins.

Furthermore, just two sets of about the brake pump is provided with altogether, and is two sets of the brake pump is bilateral symmetry setting about the longitudinal center line of fixed plate, just brake block and friction disc are the arc structure.

Compared with the prior art, the beneficial effects of the utility model are that: when the drum body rotates along with the hub, the inner gear ring and the auxiliary gear are driven to rotate by the rotation of the drum body, the rotating rod and the gear are driven by the rotation of the auxiliary gear, the rotating rod drives the fan blades to rotate to suck external air into the inner cavity of the drum body, the gear drives the installation sleeve and the wind plate, the circulation speed of air in the inner cavity of the drum body is accelerated by the rotation of the wind plate, air entering the inner cavity of the drum body is blown to the heat dissipation holes, the air entering the installation groove of the inner cavity of the heat dissipation holes cools the base plate and the heat insulation plate, the air in the installation groove is sprayed to the friction plates, the friction plates are cooled, and when the drum body rotates, the air can be sprayed to the outer sides of the two sets of friction plates.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic view of the connection between the fixing plate and the mounting sleeve of the present invention;

fig. 3 is a schematic view of the connection between the brake pump and the substrate of the present invention.

In the figure: 1. a fixing plate; 2. a drum body; 3. an inner gear ring; 4. an auxiliary gear; 5. a rotating rod; 6. a gear; 7. installing a sleeve; 8. heat dissipation fins; 9. air holes; 10. a friction plate; 11. a brake pad; 12. a brake pump; 13. mounting holes; 14. an air outlet; 15. a wind plate; 16. a substrate; 17. a heat insulation plate; 18. mounting grooves; 19. heat dissipation holes; 20. a support spring; 21. a friction block; 22. a fan blade.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a drum brake with good heat dissipation performance, which has the advantage of good heat dissipation effect, please refer to fig. 1-2, which comprises a fixing plate 1, wherein the fixing plate 1 is installed on a hub through a mounting hole 13, a drum body 2 is movably arranged at the outer side of the fixing plate 1, the front end of the inner wall of the periphery of the drum body 2 is provided with an annular groove, an annular gear 3 is clamped in the annular groove, the inner wall at the right side of the annular gear 3 is meshed with an auxiliary gear 4, a rotating rod 5 is inserted in the center of the auxiliary gear 4, the left end of the auxiliary gear 4 is meshed with a gear 6, the center of the gear 6 is provided with a slot which is communicated from front to back, a mounting sleeve 7 is clamped in the slot, the rear end face of the mounting sleeve 7 is connected with the outer wall at the front side of the fixing plate 1 through a bearing, the connecting part of the fixing plate 1 and the mounting sleeve 7 is provided, the auxiliary gear 4 rotates to drive the gear 6 and the rotating rod 5 to rotate, the rotating rod 5 rotates to drive the fan blades 22 to rotate so as to suck external air into the inner cavity of the drum body 2, the gear 6 drives the mounting sleeve 7 to rotate, the mounting sleeve 7 drives the wind plates 15 to rotate so as to accelerate the circulation speed of the air in the inner cavity of the drum body 2, the air entering the inner cavity of the drum body 2 is blown to the brake pads 11 to cool the brake pads 11, the rear ends of the top and bottom inner walls of the drum body 2 are respectively provided with a heat dissipation fin 8, one opposite side of each of the two sets of heat dissipation fins 8 is fixedly connected with a friction plate 10, the outer wall of one opposite side of each of the two sets of friction plates 10 is respectively attached with the brake pads 11, the outer walls of the opposite sides of the two sets of brake pads 11 are connected through the brake pump 12, the brake pump 12 is started to push the two sets of brake pads, avoid the stone of tiny granule to get into 2 inner chambers of the drum body, the air in 2 inner chambers of the drum body passes through venthole 14 and discharges, 7 outer wall annular arrays of installation sleeve are provided with three aerofoil 15 of group, aerofoil 15 is located between brake pump 12 and the

gear

6, 1 preceding terminal surface rectangular array of fixed plate is provided with four group's mounting hole 13, four group's mounting hole 13 are located two sets of brake pump 12 outsides, 5 rear ends of bull stick pass through the bearing and are connected with 1 front side outer wall of fixed plate, 5 outer wall annular arrays of bull stick are provided with four group's flabellums 22, and flabellum 22 is located auxiliary gear 4 front side, drum body 2 and auxiliary gear 4 front side outer wall all are provided with the through.

Referring to fig. 3, the brake pad 11 includes a base plate 16 connected to the brake pump 12, a heat insulation plate 17 is disposed on the top of the base plate 16, a mounting groove 18 is disposed on the outer wall of the top of the base plate 16, the heat insulation plate 17 penetrates through the top of the mounting groove 18, a support spring 20 is fixedly connected to the inner wall of the bottom of the mounting groove 18, a friction block 21 is fixedly connected to the top of the support spring 20, the top of the friction block 21 extends to the outer wall of the top of the heat insulation plate 17, heat dissipation holes 19 are uniformly disposed on the outer wall of the bottom of the base plate 16, the top of the heat dissipation holes 19 extends to the inner cavity of the mounting groove 18, the base plate 16 and the heat insulation plate 17 are pushed towards the friction plate 10 when the brake pump 12 is started, the friction block 21 contacts the friction plate 10 to compress the support spring 20, the friction block 21 is pushed towards the friction plate 10 by the elastic force generated by the deformation of, the air in the mounting groove 18 is sprayed to the friction plate 10, so that the temperature of the friction plate 10 is reduced while the temperature of the base plate 16 and the heat insulation plate 17 is reduced.

Referring to fig. 3, the diameter of the friction block 21 is smaller than that of the mounting groove 18, when the friction block 21 is attached to the friction plate 10 to compress the support spring 20, air is not affected to be sprayed to the friction plate 10 through the mounting groove 18, four groups of grooves are annularly arranged on the inner wall around the mounting groove 18, slide blocks are slidably connected in the grooves, and opposite ends of the four groups of slide blocks are fixedly connected with the friction block 21 to maintain the stability of the friction block 21 in extending and retracting.

Referring to fig. 1, five to seven groups of heat dissipation fins 8 are disposed on the left and right of the outer wall of the two groups of friction plates 10 opposite to each other to assist in supporting the friction plates 10, and inclined air holes 9 are uniformly formed in the outer walls of the heat dissipation fins 8, so that when the drum body 2 rotates, air is sprayed to the outer sides of the two groups of friction plates 10 through the air holes 9, thereby accelerating the cooling speed of the friction plates 10.

Referring to fig. 1, the brake pumps 12 are disposed in two left and right sets, and the two sets of brake pumps 12 are disposed symmetrically with respect to the longitudinal center line of the fixing plate 1, so that when the brake pumps 12 drive the two sets of brake pads 11 to extend, the stability of the brake pads 11 is maintained, the brake pads 11 are tightly attached to the friction plates 10, and the brake pads 11 and the friction plates 10 are arc-shaped.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a drum brake that heat dispersion is good, includes fixed plate (1), its characterized in that: a drum body (2) is movably arranged on the outer side of the fixed plate (1), an annular groove is formed in the front end of the inner wall of the periphery of the drum body (2), an inner gear ring (3) is connected in a clamping manner in the annular groove, an auxiliary gear (4) is meshed with the inner wall of the right side of the inner gear ring (3), a rotating rod (5) is inserted in the center of the auxiliary gear (4), a gear (6) is meshed at the left end of the auxiliary gear (4), a slot which is penetrated in the front and back is formed in the center of the gear (6), a mounting sleeve (7) is connected in the slot in a clamping manner, the rear end face of the mounting sleeve (7) is connected with the outer wall of the front side of the fixed plate (1) through a bearing, heat dissipation fins (8) are arranged at the rear ends of the inner walls of the top and the bottom of the drum body (2), friction plates (10), two sets of the relative one side outer wall of brake block (11) passes through brake pump (12) and connects, the drum body (2) outer wall evenly is provided with venthole (14) of slope, installation sleeve (7) outer wall annular array is provided with three aerofoil (15) of group, aerofoil (15) are located between brake pump (12) and gear (6), fixed plate (1) preceding terminal surface rectangle array is provided with four mounting hole (13) of group, four groups mounting hole (13) are located two sets of brake pump (12) outsides, bull stick (5) rear end is passed through the bearing and is connected with fixed plate (1) front side outer wall, bull stick (5) outer wall annular array is provided with four sets of flabellum (22), just flabellum (22) are located auxiliary gear (4) front side, the drum body (2) and auxiliary gear (4) front side outer wall all are provided with the through-hole that link up from beginning to end.

2. The drum brake with good heat dissipation performance according to claim 1, characterized in that: brake block (11) include base plate (16) of being connected with brake pump (12), base plate (16) top is provided with heat insulating board (17), base plate (16) top outer wall is provided with mounting groove (18), heat insulating board (17) are run through at mounting groove (18) top, mounting groove (18) bottom inner wall fixedly connected with supporting spring (20), supporting spring (20) top fixedly connected with clutch blocks (21), clutch blocks (21) top extends to heat insulating board (17) top outer wall, base plate (16) bottom outer wall evenly is provided with louvre (19), just louvre (19) top extends to mounting groove (18) inner chamber.

3. The drum brake with good heat dissipation performance according to claim 2, characterized in that: the diameter of the friction block (21) is smaller than that of the mounting groove (18), four groups of grooves are formed in the circumferential array of the inner wall of the periphery of the mounting groove (18), sliding blocks are connected in the grooves in a sliding mode, and the opposite ends of the four groups of sliding blocks are fixedly connected with the friction block (21).

4. The drum brake with good heat dissipation performance according to claim 1, characterized in that: five to seven groups of heat dissipation fins (8) are arranged on the left and right sides of the outer wall of one side of each of the two groups of friction plates (10), which is opposite to the other side, and inclined air holes (9) are uniformly formed in the outer walls of the heat dissipation fins (8).

5. The drum brake with good heat dissipation performance according to claim 1, characterized in that: and the brake pump (12) is provided with a left group and a right group, the brake pump (12) is arranged in a bilateral symmetry mode about the longitudinal center line of the fixing plate (1), and the brake block (11) and the friction plate (10) are of arc-shaped structures.