CN219372182U - Power-off braking mechanism of transport vehicle - Google Patents

Abstract

The utility model discloses a power-off braking mechanism of a transport vehicle, which comprises a motor, wherein the shaft end of the motor is connected with a power-off brake, the motor is also provided with a protective cover, the power-off brake is arranged in the protective cover, and the protective cover comprises a dustproof part far away from a chassis and a heat dissipation part close to the chassis. According to the utility model, impurities on the road surface can be prevented from entering the power-off brake, the friction force of the power-off brake is not influenced, meanwhile, the friction plate is prevented from being shielded by the impurities, the checking efficiency of staff is improved, the power-off brake can be ensured to effectively dissipate heat, and the noise transmission of the power-off brake in the braking process is reduced.

Description

Power-off braking mechanism of transport vehicle

Technical Field

The utility model relates to the field of brake accessories, in particular to a power-off brake mechanism of a transport vehicle.

Background

The safety performance of the vehicle is particularly important in the transportation process, especially under the condition of being provided with a load, the duty ratio of the intelligent unmanned transport vehicle is gradually increased in the industrial production process, so that the safety performance of the transport vehicle in the transportation process, especially the braking function, needs to ensure the integrity of the function, and therefore the power-off brake can be installed on the motor.

For example, publication number "CN201590709U" discloses "rear end cover type power-off brake", including motor back lid, motor pivot passes motor back lid, motor back lid terminal surface on be equipped with ring channel, spring groove, install the coil in the ring channel, be equipped with the spring in the spring groove, the outside of motor back lid be equipped with the armature, the spring top on the armature terminal surface, motor pivot outer end install the fan blade, the armature be located between motor back lid and the fan blade terminal surface, motor back lid on install the bolt, the bolt pass the trompil on the armature, behind the nut of bolt is located the armature, the armature can follow the bolt and remove. But in practical application, the dead brake is directly installed at the axle head of motor, has the risk of adsorbing dust and ponding on the road, and after long-time transportation, impurity can adsorb and influence brake performance on the friction disc, and impurity too much also can influence the staff and judge whether the loss of friction disc is to limit simultaneously, and too much impurity adsorbs on the dead brake simultaneously, can influence the heat dissipation function in the dead brake in-process, and the dead brake setting can produce too much noise in outside braking in-process.

Disclosure of Invention

Aiming at the problems that in the prior art, the transportation process is easily influenced by road surface impurities, the friction plate is difficult to judge to limit, the heat dissipation is poor due to the fact that the friction plate is covered by the impurities, and the noise is overlarge in the prior art, the utility model provides the power-off braking mechanism of the transport vehicle, which can prevent the impurities on the road surface from entering the power-off brake, ensure that the friction force of the power-off brake is not influenced, simultaneously avoid the friction plate from being blocked by the impurities, improve the checking efficiency of staff, ensure that the power-off brake can effectively dissipate the heat, and reduce the noise transmission in the braking process.

In order to achieve the above purpose, the present utility model adopts the following technical scheme.

The utility model provides a power-off braking mechanism of transport vechicle, includes the motor, the axle head of motor is connected with the power-off stopper, still be provided with the protection casing on the motor, the power-off stopper sets up in the protection casing, the protection casing is including keeping away from the dustproof portion on chassis and being close to the radiating portion on chassis. The motor is connected with the protective cover, the power-off brake is arranged inside the protective cover, accumulated water and sediment on a road surface can be isolated by the protective cover, the friction performance of a friction plate in the power-off brake is prevented from being influenced, meanwhile, the phenomenon that the friction plate cannot be attached to the armature due to the fact that impurities are accumulated on the movement stroke of the armature in the power-off brake is avoided, and the situation that the armature cannot be braked is avoided; the diameter of the friction plate is generally smaller than that of the outer wall of the power-off brake, if impurities are accumulated on the friction plate, the friction plate is difficult to clean, the cleanness of the power-off brake is kept, the residual service life of the friction plate can be rapidly judged when a subsequent worker checks the process, the step of cleaning the power-off brake is avoided, meanwhile, the protective cover can be made of a hard plate made of transparent materials, the protective cover is not required to be disassembled in the checking process, the protective cover is visually checked, and the cleaning process of the protective cover is far away, so that the power-off brake is convenient to clean; because the protective cover is arranged, a large amount of heat is generated in the braking process of the power-off brake, the heat dissipation is carried out by arranging the heat dissipation part above the protective cover, hot air flow rises and is discharged from the heat dissipation part, and because the heat dissipation part is arranged on one side close to the chassis, sediment on the road surface is not easy to influence the heat dissipation part, and the dust prevention part is arranged on one side far away from the chassis, so that sediment and accumulated water splashed on the road surface are effectively shielded; and because the protective cover wraps the power-off brake, the noise diffusion is reduced in the braking process.

Preferably, the heat dissipation part is provided with a plurality of heat dissipation holes, and the heat dissipation holes are provided with waterproof breathable films. The heat dissipation holes can effectively guide out heat generated by friction of the power-off brake, waterproof breathable films are paved on the heat dissipation holes, the transportation vehicle is prevented from working in a humid environment for a long time, and condensation water drops on the chassis drop into the protective cover through the heat dissipation holes.

Preferably, the dust-proof part is provided with a sloping plate on a side far away from the chassis. The inclined plate arranged on the dustproof part and the advancing direction of the transport vehicle form an obtuse angle, and in the advancing process, sediment and accumulated water are splashed on one side opposite to the advancing direction, so that the contact area of the splashed sediment, accumulated water and the dustproof part can be effectively reduced, and the adhesion of impurities on the dustproof part is reduced.

Preferably, a friction disc is arranged in the power-off brake, a plurality of friction plates are arranged on the friction disc, and gaps are arranged between adjacent friction plates. A gap is arranged between the friction plates, wherein the gap extends along the direction away from the axis, so that the contact area between the friction plates and air is enlarged, heat can be guided to be emitted out of the power-off brake, and excessive heat accumulation on the friction plates is avoided; the friction plate can be worn after braking for many times, so that the worn degree of the friction plate can be judged according to the distance between the friction plate and the bottom of the gap, the depth of the gap can be set to be the abradable thickness of the friction plate, and when the gap disappears, the replacement is needed.

Preferably, the gap has a larger width on the side away from the axis than on the side closer to the axis. The width of the gap at one side far away from the axle center is larger than that at one side close to the axle center, so that the opening area of one side of the friction plate, which is in contact with air, is increased, and heat conduction and dissipation are facilitated.

Preferably, the friction disc comprises a sleeve, a plurality of key grooves are formed in the sleeve, the motor comprises a connecting shaft, keys are arranged on the connecting shaft, and the key grooves are mutually clamped with the keys. The key on the connecting axle and keyway joint can drive the friction disc through the connecting axle of motor and rotate, and in-process, the frictional force reaction that the friction disc received and connecting axle drive the connecting axle and stop the motion gradually, and a plurality of keyways that set up in the sleeve can improve the installation in-process with the matching efficiency of key.

Preferably, the diameter of the end of the connecting shaft away from the motor is smaller than the diameter of the end close to the motor. The connecting shaft is conical and can be fast clamped in the installation matching process, positioning is convenient, and installation efficiency is improved.

Preferably, a transparent observation port is formed in the side face of the protective cover, and the transparent observation port is arranged opposite to the power-off brake. The side at the protection casing sets up transparent viewing aperture, and transparent viewing aperture just is to losing the setting of electric brake, can observe the service behavior of friction disc in the electric brake more conveniently, adopts general casting panel except that the position of transparent viewing aperture, has improved the structural strength of protection casing, has reduced manufacturing cost, sets up and can make things convenient for the staff to observe in the side, and the absorptive impurity of protection casing side is less for the bottom surface simultaneously, conveniently carries out the visual observation.

Preferably, the dust-proof part is hinged with the bottom of the motor. Dustproof portion and motor bottom are articulated each other, and the radiating portion is fixed through dismantling the connection with the motor top, when changing the power-off stopper, dismantles the radiating portion, and the dust cover alright rotate around articulated department, thereby avoid impurity too much in the dustproof portion to interfere and dismantle the upset dust cover.

The beneficial effects of the utility model are as follows:

(1) The impurity interference power-off brake can be effectively reduced by arranging the protective cover, the cleaning of the power-off brake is guaranteed, the subsequent checking work of staff is facilitated, the noise diffusion and propagation in the braking process are reduced, and the heat dissipation part arranged above can effectively guide the heat diffusion and avoid heat accumulation;

(2) The waterproof breathable film arranged on the radiating holes can prevent water drops in a humid environment from condensing and dripping into the protective cover;

(3) The heat radiating disc with the gaps can increase the contact area of the radiating fins and air, effectively conduct and radiate heat, avoid the influence of heat accumulation on internal electromagnetic components of the power-off brake, and the gaps can provide judgment basis for staff to judge the loss of the friction plate;

(4) The transparent observation port on the side surface of the protective cover can rapidly observe the abrasion state of the friction plate under the condition that the protective cover is not dismounted.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a schematic diagram of the structure at a in fig. 1.

Fig. 3 is an isometric view of the shield of example 1.

Fig. 4 is a schematic structural diagram of embodiment 2.

In the figure: the motor comprises a motor 1, a connecting shaft 11, a key 111, a power-off brake 2, a friction disc 21, a friction plate 22, a gap 23, a sleeve 24, a key groove 241, a protective cover 3, a dustproof part 31, a sloping plate 311, a heat dissipation part 32, a heat dissipation hole 321, a waterproof and breathable film 322 and a transparent observation port 33.

Detailed Description

The utility model is further described below with reference to the drawings and specific embodiments.

Example 1:

as shown in fig. 1 and 3, a power-off braking mechanism of a transport vehicle comprises a motor 1, wherein the shaft end of the motor is connected with a power-off brake 2, and the motor is also provided with a protective cover 3 which comprises a dustproof part 31 far away from a chassis and a heat dissipation part 32 close to the chassis; the heat dissipation part is provided with a plurality of heat dissipation holes 321, and the heat dissipation holes are provided with waterproof breathable films 322; the dustproof portion is provided with swash plate 311 far away from chassis one side, and dustproof portion is articulated with the motor bottom.

The motor is connected with the protective cover, the power-off brake is arranged inside the protective cover, accumulated water and sediment on a road surface can be isolated by the protective cover, the friction performance of the friction plate in the power-off brake is prevented from being influenced, meanwhile, the situation that the friction plate 22 cannot be attached to the armature due to the fact that impurities are accumulated on the movement stroke of the armature in the power-off brake is avoided, and the situation that the braking cannot be performed is avoided; the diameter of the friction plate is generally smaller than that of the outer wall of the power-off brake, if impurities are accumulated on the friction plate, the friction plate is difficult to clean, the cleanness of the power-off brake is kept, the residual service life of the friction plate can be rapidly judged when a subsequent worker checks the process, the step of cleaning the power-off brake is avoided, meanwhile, the protective cover can be made of a hard plate made of transparent materials, the protective cover is not required to be disassembled in the checking process, the protective cover is visually checked, and the cleaning process of the protective cover is far away, so that the power-off brake is convenient to clean; because the protective cover is arranged, a large amount of heat is generated in the braking process of the power-off brake, the heat dissipation is carried out by arranging the heat dissipation part above the protective cover, hot air flow rises and is discharged from the heat dissipation part, and because the heat dissipation part is arranged on one side close to the chassis, sediment on the road surface is not easy to influence the heat dissipation part, and the dust prevention part is arranged on one side far away from the chassis, so that sediment and accumulated water splashed on the road surface are effectively shielded; the protective cover wraps the power-off brake, so that noise diffusion is reduced in the braking process; the heat dissipation holes can effectively guide out heat generated by friction of the power-off brake, waterproof and breathable films are paved on the heat dissipation holes, so that the transportation vehicle is prevented from working in a humid environment for a long time, and condensation water drops on the chassis drop into the protective cover through the heat dissipation holes; the inclined plate arranged on the dustproof part forms an obtuse angle with the advancing direction of the transport vehicle, and in the advancing process, sediment and accumulated water are splashed on one side opposite to the advancing direction, so that the contact area between the splashed sediment and accumulated water and the dustproof part can be effectively reduced, and the adhesion of impurities on the dustproof part is reduced; dustproof portion and motor bottom are articulated each other, and the radiating portion is fixed through dismantling the connection with the motor top, when changing the power-off stopper, dismantles the radiating portion, and the dust cover alright rotate around articulated department, thereby avoid impurity too much in the dustproof portion to interfere and dismantle the upset dust cover.

As shown in fig. 2, a friction disc 21 is arranged in the power-off brake, the friction disc comprises a sleeve 24, a key groove 241 is arranged in the sleeve, the motor comprises a connecting shaft 11, a key 111 is arranged on the connecting shaft, and the key groove is mutually clamped with the key; the diameter of the connecting shaft far away from one end of the motor is smaller than that of the connecting shaft near one end of the motor.

The width of the gap at one side far away from the axle center is larger than that at one side close to the axle center, so that the opening area of the contact side of the friction plate and air is increased, and the heat conduction and dissipation are facilitated; the key on the connecting axle and keyway joint can drive the friction disc through the connecting axle of motor and rotate, and in the braking process, the frictional force reaction that the friction disc received and connecting axle drive the connecting axle and stop the motion gradually.

As shown in fig. 3, the side of the shield is provided with a transparent viewing port 33, which is disposed opposite to the power-off brake.

The side at the protection casing sets up transparent viewing aperture, and transparent viewing aperture just is to losing the setting of electric brake, can observe the service behavior of friction disc in the electric brake more conveniently, adopts general casting panel except that the position of transparent viewing aperture, has improved the structural strength of protection casing, has reduced manufacturing cost, sets up and can make things convenient for the staff to observe in the side, and the absorptive impurity of protection casing side is less for the bottom surface simultaneously, conveniently carries out the visual observation.

The assembly and working process of the power-off braking mechanism of the transport vehicle in the embodiment are as follows: the key slot in the sleeve is connected with the connecting shaft in a clamping manner and fixed through the check ring, the power-off brake is prevented from being separated from the connecting shaft in the rotation process, then the dustproof part is hinged to the motor, the radiating part is fixed to the motor through the bolt, the power-off brake comprises a cover inside, the dustproof part faces downwards, the radiating part faces upwards, radiating holes are uniformly arranged in the radiating part, a waterproof breathable film is paved, water drops are prevented from falling into the protective cover, in the working process, after the transportation vehicle loses electricity, the armature adsorbed through electromagnetic force is mutually attached to the friction disc under the driving action of the spring, the friction disc rotates under the driving of the connecting shaft, friction force is generated, and the friction force is reacted to the connecting shaft, so that the motor stops rotating.

Example 2:

as shown in fig. 4, unlike embodiment 1, in this embodiment, a plurality of friction plates 22 are provided on a friction plate 21, and gaps 23 are provided between adjacent friction plates. The width of the gap at one side far away from the axle center is larger than the width at one side close to the axle center. The gap between the friction plates extends along the direction far away from the axle center, so that the contact area between the friction plates and the air is enlarged, heat can be guided to be emitted out of the power-off brake, the electromagnetic components are prevented from being influenced by excessive heat accumulation on the friction plates, meanwhile, the width of the gap at the side far away from the axle center is larger than that at the side close to the axle center, the opening area of the contact side of the friction plates and the air is increased, and the heat conduction and emission are facilitated; and because the friction plate can generate loss after braking for many times, the worn degree of the friction plate can be judged according to the distance between the friction plate and the bottom of the gap, the depth of the gap can be set to be the abradable thickness of the friction plate, and when the gap disappears, the replacement is needed.

In addition to the above embodiments, the technical features of the present utility model may be rearranged and combined within the scope of the claims and the disclosure of the present utility model to form new embodiments, which may be realized by those skilled in the art without inventive effort, and thus, embodiments of the present utility model not described in detail should be considered as embodiments of the present utility model within the scope of the protection of the present utility model.

Claims (9)

1. The utility model provides a power-off braking mechanism of transport vechicle, its characterized in that, including motor (1), the axle head of motor (1) is connected with power-off brake (2), still be provided with protection casing (3) on motor (1), power-off brake (2) set up in protection casing (3), protection casing (3) are including keeping away from dustproof portion (31) on chassis and be close to heat dissipation portion (32) on chassis.

2. The electric brake mechanism of a transport vehicle according to claim 1, wherein the heat dissipating part (32) is provided with a plurality of heat dissipating holes (321), and the heat dissipating holes (321) are provided with a waterproof and breathable film (322).

3. The electric brake mechanism of a transport vehicle according to claim 1, wherein the dust-proof part (31) is provided with a sloping plate (311) on a side away from the chassis.

4. A de-energized brake mechanism for a transport vehicle according to any of the claims 1-3, characterized in that a friction disc (21) is arranged in the de-energized brake (2), that a number of friction discs (22) are arranged on the friction disc (21), and that gaps (23) are arranged between adjacent friction discs (22).

5. A de-energized brake mechanism for a transportation vehicle as defined in claim 4 wherein the gap (23) has a greater width on the side remote from the axle than on the side closer to the axle.

6. The electric power failure braking mechanism of transport vehicle according to claim 4, wherein the friction disc (21) comprises a sleeve (24), a plurality of key grooves (241) are arranged in the sleeve, the motor comprises a connecting shaft (11), a key (111) is arranged on the connecting shaft (11), and the key grooves (241) are mutually clamped with the key (111).

7. A de-energized braking mechanism for a transportation vehicle according to claim 6, characterised in that the connecting shaft (11) has a smaller diameter at the end remote from the motor (1) than at the end near the motor (1).

8. A de-energized brake mechanism for a transportation vehicle as claimed in claim 1 or 2 or 3 or 5 or 6 or 7, characterised in that the side of the protective cover (3) is provided with a transparent viewing port (33), the transparent viewing port (33) being arranged opposite to the de-energized brake (2).

9. A de-energized braking mechanism for a transportation vehicle according to claim 1 or 2 or 3 or 5 or 6 or 7, characterized in that the dust guard (31) is hinged to the bottom of the motor (1).