Brake drum structure of tricycle

Abstract

The utility model relates to the technical field of brake structures, and discloses a tricycle brake drum structure which comprises a chassis, brake back plates are fixedly installed on the front portion and the rear portion of the chassis respectively, fixing blocks are fixedly installed on the brake back plates, and the opposite sides of the two fixing blocks are movably connected with brake shoes through shafts respectively. Sliding grooves are evenly formed in the outer sides of the brake shoes, fixing boxes are evenly and fixedly installed on the inner sides of the brake shoes, electric push rods are fixedly installed in inner cavities of the fixing boxes, the telescopic ends of the electric push rods are movably connected with the sliding grooves in a sleeved mode, brake pads are arranged on the outer sides of the brake shoes, and fillets are evenly and fixedly connected to the inner sides of the brake pads. The limiting grooves are formed in the fillets, the limiting grooves are connected with the telescopic ends of the electric push rods in a clamped mode, by adjusting the clamping connection of the telescopic ends of the electric push rods and the limiting grooves, the brake pad is more convenient and faster to disassemble and assemble, the disassembling and assembling efficiency is improved, the situation that the whole brake shoe mechanism needs to be replaced is avoided, extra resource waste is prevented, and economic benefits are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to brake structure technical field especially relates to a tricycle brake drum structure. BACKGROUND

[0002] The brake is the component for generating the brake force to hinder the movement or movement tendency of the vehicle in the brake system, and almost all the automobile brakes except various speed reduction devices are friction brakes for generating the brake torque by the friction between the fixed element and the working surface of the rotating element, which can be divided into drum type and disc type according to the rotating element, and the difference between them lies in that the rotating element in the drum type brake friction pair is the steel brake, and the inner surface of the cylinder is the working surface, and the rotating element in the disc type brake friction pair is the disc-shaped brake disc, and the two end faces are the working surfaces.

[0003] In the prior art, the drum type brake is used in the tricycle brake system because of the relatively simple structure and low cost, but the brake pad needs to be replaced for the driving safety after the long-time use of the brake device, and the brake pad and the brake shoe need to be replaced together in the traditional way, which consumes a lot of time in the disassembly and assembly process and easily causes the resource waste, therefore, the utility model provides a tricycle brake drum structure to solve the above problems. UTILITY MODEL CONTENT

[0004] In view of the defects of the prior art, the utility model provides a tricycle brake drum structure, which is convenient and fast for the disassembly and assembly of the brake pad by adjusting the clamping of the extension end of the electric push rod and the limiting groove and by matching the ridge and the sliding groove, improves the disassembly and assembly efficiency of the maintenance personnel, avoids the replacement of the whole brake shoe mechanism, prevents the additional resource waste, and is beneficial to improving the economic benefit.

[0005] The utility model provides the following technical scheme: a tricycle brake drum structure, including the chassis, the chassis front and rear parts are fixedly installed with brake back plate respectively, brake back plate is fixedly installed with fixed block, the number of fixed block is two and left and right symmetry distribution, two fixed blocks opposite sides are connected with brake shoe through the shaft activity respectively, brake shoe outside evenly is equipped with the sliding slot, brake shoe inside evenly is fixedly installed with fixed box, the number of sliding slot and fixed box all is four, fixed box inner chamber is fixedly installed with electric push rod, electric push rod telescopic end and sliding groove activity sleeve joint, brake shoe outside is provided with brake pad, brake pad inside evenly is fixedly connected with ridge, the number of ridge is four and is matched with sliding groove respectively, is equipped with the limiting groove on the ridge, limiting groove and electric push rod telescopic end clamping, through adjusting the clamping of the extension end of the electric push rod and the limiting groove, the disassembly and assembly of the brake pad are more convenient and fast, improve the disassembly and assembly efficiency, avoid the replacement of the whole brake shoe mechanism, prevent the additional resource waste, improve the economic benefit.

[0006] Preferably, the brake pad is longitudinally provided with an arc-shaped groove, and the brake pad is uniformly provided with a wave-shaped groove in the transverse direction, the wave-shaped groove is fixedly connected with the arc-shaped groove, the groove on the brake pad increases the contact area with air, so that the brake pad can be quickly cooled after braking, prevents the brake pad from affecting its own friction coefficient due to slow cooling, and is favorable for the brake pad to maintain good working efficiency.

[0007] Preferably, the hydraulic rod is fixedly installed above the fixed block on the brake back plate, the left and right two telescopic ends of the hydraulic rod are movably connected with the left and right two brake shoes through shafts, a return spring is fixedly installed between the two brake shoes, the hydraulic rod is pressurized during braking, so that the telescopic rods on the two sides of the hydraulic rod are extended, the brake pad is driven to move and contact the rotating mechanism, so that braking is performed, and the brake pad is returned to the original position through the return spring after braking.

[0008] Preferably, a dust collector is fixedly installed between the two fixed blocks on the brake back plate, a dust suction pipe is fixedly installed at the bottom of the dust collector, a dust suction port is formed at the bottom of the dust suction pipe, and a cover plate is movably connected with the front portion of the dust collector through a shaft; the dust suction device is started during braking, so that the debris generated when the brake pad is rubbed is collected and adsorbed through the dust suction pipe and the dust suction port, the cover plate is opened during maintenance, and the debris can be uniformly cleaned, so that the debris does not affect the use of the device and the risk of safety accidents of the vehicle is reduced.

[0009] Preferably, a steel brake is arranged outside the brake back plate, a connecting shaft is fixedly sleeved in the middle of the steel brake, the connecting shaft is hexagonal, bearings are fixedly installed in the upper and lower portions of the inner cavity of the connecting shaft, the connecting shaft is clamped with the rotating shaft of the vehicle through the bearings, a driving wheel is fixedly installed outside the steel brake, the brake shoe drives the brake pad to contact the inner wall of the cavity of the steel brake, so that friction is generated between the brake pad and the steel brake, and the rotating speed of the steel brake is reduced, so that the purpose of braking is achieved.

[0010] Preferably, a vehicle hopper is fixedly installed on the upper portion of the vehicle chassis, a seat is fixedly installed on the right side of the vehicle hopper, a handrail is movably connected with the right portion of the vehicle chassis through a shaft, and a driven wheel is movably connected with the bottom end of the handrail through a shaft; the vehicle hopper facilitates the vehicle to carry goods, and the driver can sit on the seat and adjust the driving direction of the vehicle by using the handrail and the driven wheel.

[0011] Compared with the prior art, the utility model has the following effects:

[0012] 1、When the brake pad needs to be replaced, the electric push rod is started to make the telescopic end retract to disconnect the clamping between the limiting groove, and the brake pad can be taken out from the brake shoe by using the engagement of the ridge and the sliding groove, which facilitates the disassembly and replacement of the brake pad during vehicle maintenance, prevents a large amount of time from being consumed in disassembly and assembly, improves the disassembly and assembly efficiency of the maintenance personnel, compared with the replacement of the entire brake shoe in the traditional way, resource waste is avoided, economic benefits are improved, the recess formed in the brake pad increases the contact area of the brake pad and air, so that the brake pad can be quickly cooled after braking, the friction coefficient of the brake pad is prevented from being affected due to delayed cooling, the brake pad is beneficial to maintaining good working efficiency, and the connection effect of the steel brake and the driving wheel is enhanced through the hexagonal connecting shaft, relative sliding between the steel brake and the driving wheel is avoided, and the safety of connection is improved.

[0013] 2、The hexagonal design of the connecting shaft makes the steel brake still rotate with the connecting shaft when the steel brake is loose, avoids generating large friction, starts the dust collection device during braking, so that the debris generated when the brake pad rubs against the steel brake is collected and adsorbed through the dust collection pipe and the dust collection port, and the cover plate is opened during maintenance to clean uniformly, so that a large amount of friction debris is avoided from being accumulated in the brake device, the debris is prevented from entering various mechanisms in the device, the normal use of the brake device is affected, the risk of vehicle safety accidents is reduced, and safety protection is provided for the driving safety of the vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a schematic view of the external structure of the utility model;

[0015] Figure 2 It is a schematic view of the structure when the utility model is combined;

[0016] Figure 3 It is a schematic view of the detailed structure of the utility model;

[0017] Figure 4 It is a schematic view of the fixed structure of the utility model;

[0018] Figure 5 It is a schematic view of the steel brake of the utility model;

[0019] Figure 6 It is a schematic view of the connecting shaft of the steel brake of the utility model;

[0020] Figure 7 It is a schematic view of the steel brake of the utility model;

[0021] Figure 8 It is a schematic view of the second form of the steel brake of the utility model.

[0022] In the figure: 1, the vehicle chassis; 2, brake back plate; 3, fixed block; 4, brake shoe; 5, sliding groove; 6, fixed box; 7, electric push rod; 8, brake pad; 9, ridge; 10, limiting groove; 11, arc groove; 12, wave groove; 13, hydraulic rod; 14, reset spring; 15, dust suction device; 16, dust suction pipe; 17, dust suction port; 18, cover plate; 19, steel brake; 20, connecting shaft; 21, driving wheel; 22, vehicle hopper; 23, seat; 24, armrest; 25, driven wheel. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0024] Please refer to Figures 1-6 A tricycle brake drum structure, including vehicle chassis 1, vehicle chassis 1 front and rear two parts are fixedly installed with brake back plate 2, brake back plate 2 is fixedly installed with fixed block 3, the number of fixed block 3 is two and is symmetrically distributed, two fixed blocks 3 opposite sides are movably connected with brake shoe 4 through shaft, brake shoe 4 outside is evenly provided with sliding groove 5, brake shoe 4 inner side is evenly fixedly installed with fixed box 6, the number of sliding groove 5 and fixed box 6 is four, electric push rod 7 is fixedly installed in the inner chamber of fixed box 6, electric push rod 7 telescopic end is movably sleeved with sliding groove 5, brake shoe 4 outside is provided with brake pad 8, brake pad 8 inner side is evenly fixedly connected with ridge 9, the number of ridge 9 is four and is respectively matched with sliding groove 5, limit groove 10 is formed in ridge 9, limit groove 10 is clamped with the telescopic end of electric push rod 7, when needing to replace brake pad 8, start electric push rod 7 to make its telescopic end contract and break the clamping between it and limit groove 10, using the matching of ridge 9 and sliding groove 5 can slide brake pad 8 from brake shoe 4 and take out, when installing, reverse the above operation can be, when vehicle maintenance, it is convenient to brake pad 8 is disassembled and replaced, prevent disassembly and consume a lot of time, improve the disassembly efficiency of repair personnel, compared with the replacement of entire brake shoe 4 in traditional mode, avoid causing resource waste, be favorable to the promotion economic benefits, arc groove 11 is longitudinally formed in brake pad 8, wave groove 12 is evenly formed in brake pad 8, wave groove 12 is fixedly connected with arc groove 11, increase the contact surface of brake pad 8 and air through arc groove 11 and wave groove 12, it is convenient to brake pad 8 after braking is rapidly heat dissipated, prevent brake pad 8 heat dissipation not in time influence its own friction coefficient, make brake pad 8 maintain good work efficiency;

[0025] The hydraulic rod 13 is fixedly installed on the brake back plate 2 and above the fixed block 3, the left and right two telescopic ends of the hydraulic rod 13 are respectively connected with the left and right two brake shoes 4 through shafts, the reset spring 14 is fixedly installed between the two brake shoes 4, the dust collector 15 is fixedly installed on the brake back plate 2 and between the two fixed blocks 3, the dust suction pipe 16 is fixedly installed at the bottom of the dust collector 15, the dust suction port 17 is arranged at the bottom of the dust suction pipe 16, the cover plate 18 is movably connected with the front part of the dust collector 15 through a shaft, the steel brake 19 is arranged outside the brake back plate 2, the connecting shaft 20 is fixedly sleeved in the middle of the steel brake 19, the connecting shaft 20 is hexagonal and has bearings fixedly installed in the upper and lower cavities, the connecting shaft 20 is connected with the rotating shaft of the vehicle through the bearings, the driving wheel 21 is fixedly installed outside the steel brake 19, the hexagonal design of the connecting shaft 20 enables the steel brake 19 to rotate with the connecting shaft 20 when the steel brake 19 is loose, thereby avoiding large friction, the vehicle hopper 22 is fixedly installed on the upper part of the vehicle chassis 1, the seat 23 is fixedly installed on the upper part of the vehicle chassis 1 and right in front of the vehicle hopper 22, the handrail 24 is movably connected with the right part of the vehicle chassis 1 through a shaft, the driven wheel 25 is movably connected with the bottom end of the handrail 24 through a shaft, the steel brake 19 drives the driving wheel 21 to rotate to provide power when the vehicle moves, the brake shoes 4 are driven to move by the extension of the telescopic rods on both sides of the hydraulic rod 13 when the brake is applied, the brake shoes 4 drive the brake pads 8 to contact the inner wall of the cavity of the steel brake 19, so that the brake pads 8 and the steel brake 19 generate friction, thereby reducing the rotating speed of the steel brake 19 to achieve the purpose of braking, the dust collector 15 is started during the braking process, so that the debris generated by the friction of the brake pads 8 is collected and adsorbed through the dust suction pipe 16 and the dust suction port 17, the cover plate 18 can be opened for unified cleaning during maintenance, thereby avoiding the accumulation of a large amount of friction debris inside the brake device, preventing the debris from entering various mechanisms in the device, thereby affecting the normal use of the brake device, reducing the risk of safety accidents of the vehicle, and providing safety protection for the driving safety of the vehicle.

[0026] Working principle: when the vehicle moves, the steel brake 19 drives the driving wheel 21 to rotate to provide power, and when the brake is applied, the hydraulic rod 13 is pressurized to make the extension rods on both sides of the hydraulic rod 13 extend to drive the brake shoe 4 to move, the brake shoe 4 drives the brake pad 8 to contact the inner wall of the steel brake 19 cavity, so that the brake pad 8 and the steel brake 19 generate friction, thereby reducing the rotating speed of the steel brake 19, achieving the purpose of braking, through the hexagonal design of the connecting shaft 20, the steel brake 19 can still rotate with the connecting shaft 20 when it is loose, avoiding generating large friction, starting the dust collection device 15 during braking to collect and adsorb the debris generated by the friction of the brake pad 8 through the dust collection pipe 16 and the dust collection port 17, opening the cover plate 18 during maintenance to clean uniformly, increasing the contact surface of the brake pad 8 and the air through the arc-shaped groove 11 and the wave-shaped groove 12, facilitating the rapid heat dissipation of the brake pad 8 after braking, when the brake pad 8 needs to be replaced, the electric push rod 7 is started to make its telescopic end contract to disconnect the clamping between it and the limiting groove 10, and the brake pad 8 can be taken out by sliding from the brake shoe 4 by using the engagement of the ridge 9 and the sliding groove 5, and the reverse operation above can be used for installation.

Claims

1. A tricycle brake drum structure comprising a vehicle chassis (1), characterized in that: The car chassis (1) is provided with brake back plates (2) fixedly installed on the front and rear parts, respectively, the brake back plates (2) are fixedly installed with fixed blocks (3), the fixed blocks (3) are two in number and symmetrically distributed on the left and right sides, the opposite sides of the two fixed blocks (3) are movably connected with brake shoes (4) through shafts, the outer sides of the brake shoes (4) are uniformly provided with sliding grooves (5), the inner sides of the brake shoes (4) are fixedly installed with fixed boxes (6), the numbers of the sliding grooves (5) and the fixed boxes (6) are both four, the fixed boxes (6) are fixedly installed with electric push rods (7) in the inner cavities, the telescopic ends of the electric push rods (7) are movably sleeved with the sliding grooves (5), the outer sides of the brake shoes (4) are provided with brake pads (8), the inner sides of the brake pads (8) are fixedly connected with beads (9), the numbers of the beads (9) are four and are matched with the sliding grooves (5), respectively, limit grooves (10) are formed in the beads (9), and the limit grooves (10) are clamped with the telescopic ends of the electric push rods (7).

2. A tricycle brake drum structure according to claim 1, characterized in that: Arc-shaped grooves (11) are longitudinally formed in the brake pads (8), and wave-shaped grooves (12) are transversely and uniformly formed in the brake pads (8) and are fixedly connected with the arc-shaped grooves (11).

3. The tricycle brake drum structure of claim 1, wherein: Hydraulic rods (13) are fixedly installed above the fixed blocks (3) on the brake back plates (2), the left and right two telescopic ends of the hydraulic rods (13) are movably connected with the left and right two brake shoes (4) through shafts, and reset springs (14) are fixedly installed between the two brake shoes (4).

4. The tricycle brake drum structure of claim 1, wherein: A dust collector (15) is fixedly installed between the two fixed blocks (3) on the brake back plate (2), a dust suction pipe (16) is fixedly installed at the bottom of the dust collector (15), a dust suction port (17) is formed at the bottom of the dust suction pipe (16), and a cover plate (18) is movably connected with the front part of the dust collector (15) through a shaft.

5. The tricycle brake drum structure of claim 1, wherein: A steel brake (19) is arranged outside the brake back plate (2), a connecting shaft (20) is fixedly sleeved in the middle of the steel brake (19), the connecting shaft (20) is hexagonal and is fixedly installed with bearings in the upper and lower inner cavities, the connecting shaft (20) is clamped with a vehicle rotating shaft through the bearings, and a driving wheel (21) is fixedly installed outside the steel brake (19).

6. The tricycle brake drum structure of claim 1, wherein: A car hopper (22) is fixedly installed on the upper part of the car chassis (1), a seat (23) is fixedly installed on the upper part of the car chassis (1) and in front of the right side of the car hopper (22), a handrail (24) is movably connected with the right part of the car chassis (1) through a shaft, and a driven wheel (25) is movably connected with the bottom end of the handrail (24) through a shaft.

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