High-safety brake for electric tray truck

Abstract

The utility model discloses a high-safety brake for an electric pallet truck, which belongs to the field of brakes and comprises a coil holder with an electromagnetic coil, an end cover is detachably mounted at one end of the coil holder through a bolt, a rotor is arranged in the end cover, an armature is arranged between the coil holder and the end cover, and the coil holder and the end cover are detachably mounted on the coil holder. The end cover is provided with a heat dissipation mechanism used for efficient heat dissipation during friction braking of a friction plate on the armature and a rotor, the heat dissipation mechanism comprises a heat dissipation groove formed in the end cover, the heat dissipation groove is at least provided with two heat dissipation fins, notches are formed in the two sides of each heat dissipation fin, and the two sides of each heat dissipation fin form an E-shaped structure through the notches. According to the high-safety brake for the electric tray truck, it can be ensured that the brake keeps a proper temperature in the working process through the heat dissipation mechanism, braking failure caused by overheating is prevented, and therefore the safety of the brake is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of brakes, in particular to a brake for an electric pallet truck with high safety. Background Art

[0002] An electric pallet truck is a lightweight, electrically powered industrial vehicle used for transporting pallets. It primarily utilizes an electric hydraulic pump for lifting and lowering, with the hydraulic system driving the lifting and lowering of palletized cargo. The truck's handling operations are completed by manual or electric propulsion. The brakes on electric pallet trucks are critical components for ensuring safe and stable operation. These electromagnetic brakes, when powered, generate a magnetic field that attracts the brake pads on the wheels, stopping them and achieving the desired braking effect.

[0003] The electromagnetic brake used in electric pallet trucks uses the friction between the friction plate on the armature and the rotor to generate braking torque to achieve braking work. During this process, a large amount of heat is generated due to friction between the friction plate on the armature and the rotor. Traditional brakes rely on the gap between the coil seat and the end cover to dissipate heat. However, since the brake end cover has a certain thickness and the gap between the coil seat and the end cover is small, the friction heat between the friction plate and the rotor is not enough to dissipate heat quickly through the gap, resulting in the heat not being dissipated in time. The temperature of the brake will rise rapidly, which in turn causes the braking performance to deteriorate or even fail. Utility Model Content

[0004] The purpose of the utility model is to propose a safer brake for an electric pallet truck in order to solve the problem that the heat generated by the friction between the friction plate and the rotor of the existing electric pallet truck brake cannot be dissipated in time during braking, the temperature of the brake will rise rapidly, and then the braking performance will be reduced or even fail.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technology: a highly safe brake for an electric pallet truck, comprising a coil seat with an electromagnetic coil, one end of the coil seat being detachably mounted with an end cover by bolts, a rotor being arranged inside the end cover, and an armature being arranged between the coil seat and the end cover, and a heat dissipation mechanism being provided on the end cover for efficiently dissipating heat when a friction plate on the armature and the rotor are rubbed and braked.

[0006] As a further description of the above technical solution: the heat dissipation mechanism includes a heat dissipation groove opened on the end cover, and at least two heat dissipation fins are provided on the heat dissipation groove.

[0007] As a further description of the above technical solution: notches are provided on both sides of the heat sink, and the two sides of the heat sink form a mountain-shaped structure through the notches.

[0008] As a further description of the above technical solution: the upper side of the heat sink is recessed downward to form a first groove, the lower side of the heat sink is recessed upward to form a second groove, and the first groove and the second groove are arranged in a herringbone shape.

[0009] As a further description of the above technical solution: the heat dissipation mechanism further includes a dustproof component arranged in the heat dissipation groove;

[0010] The dustproof component includes a positioning block, and a fixing frame for fixing the dustproof net is provided on the positioning block through a guide rod.

[0011] As a further description of the above technical solution: a threaded end is provided on the guide rod, and a locking nut abutting against the outer surface of the dustproof net is provided on the threaded end.

[0012] As a further description of the above technical solution: a washer is sleeved on the guide rod at a position between the positioning block and the fixed frame, and the washer is cylindrical and made of rubber.

[0013] As a further description of the above technical solution: the coil seat is detachably connected to the motor housing of the transport vehicle through a flange.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0015] The heat dissipation mechanism can ensure that the brake maintains an appropriate temperature during operation, preventing brake failure due to overheating, thereby ensuring the safety of the brake. In addition, the heat dissipation mechanism can effectively reduce the temperature of the brake by promptly dissipating the heat generated during braking, thereby reducing component wear, extending the service life of the brake, and improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shows a schematic diagram of the overall structure provided according to an embodiment of the utility model;

[0017] Figure 2 A schematic diagram of a local structure provided according to an embodiment of the present utility model is shown;

[0018] Figure 3 The structure of the heat sink provided by the embodiment of the utility model is shown Figure 1 ;

[0019] Figure 4 The structure of the heat sink provided by the embodiment of the utility model is shown Figure 2 ;

[0020] Figure 5A schematic structural diagram of a dust removal assembly according to an embodiment of the present invention is shown;

[0021] Figure 6 Shown is a diagram according to an embodiment of the present invention. Figure 5 Schematic diagram of the structure at point A.

[0022] Legend:

[0023] 1. Coil seat; 2. End cover; 3. Rotor; 4. Armature; 5. Heat dissipation mechanism; 51. Heat dissipation slot; 52. Heat sink; 521. Notch; 522. First groove; 523. Second groove; 53. Dustproof assembly; 531. Positioning block; 532. Fixing frame; 533. Dustproof net; 534. Guide rod; 535. Threaded end; 536. Locking nut; 537. Washer; 6. Flange. DETAILED DESCRIPTION

[0024] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] Reference Figures 1-6 This embodiment provides a highly safe brake for an electric pallet truck, comprising a coil holder 1 having an electromagnetic coil. The coil holder 1 is detachably connected to the motor housing of the truck via a flange 6. An end cap 2 is detachably mounted to one end of the coil holder 1 via bolts. A rotor 3 is disposed within the end cap 2, and an armature 4 is disposed between the coil holder 1 and the end cap 2. The end cap 2 is provided with a heat dissipation mechanism 5 for efficiently dissipating heat when friction between the friction plate on the armature 4 and the rotor 3 causes braking.

[0026] In the present invention, when the brake is installed, the coil seat 1 is installed on the housing of the drive motor for driving the electric transport vehicle through the flange 6. The shaft of the drive motor passes through the coil seat 1, and the keyway on the motor shaft cooperates with the rotor 3 to fix the rotor 3 on the motor shaft. When the electromagnetic coil in the coil seat 1 is energized, an electromagnetic field is generated. After the electromagnetic field generates magnetic force, it attracts the armature 4. The armature 4 has a friction plate that matches the rotor 3. When the armature 4 is attracted and moved, the friction plate and the rotor 3 rub to generate a braking torque to achieve braking. When the power is off, the magnetic field of the electromagnetic coil in the coil seat 1 disappears, and then the armature 4 is reset by the spring in the coil seat 1. The friction plate on the armature 4 is separated from the rotor 3, and the braking effect disappears. During the braking process, a large amount of heat is generated due to friction between the friction plate on the armature 4 and the rotor 3. The heat dissipation mechanism 5 can achieve rapid heat dissipation to prevent braking failure caused by overheating, thereby ensuring the safety of the brake.

[0027] Specifically, such as Figure 2-Figure 4 As shown, the heat dissipation mechanism 5 includes a heat dissipation slot 51 opened on the end cover 2, and at least two heat dissipation fins 52 are provided on the heat dissipation slot 51. Notches 521 are opened on both sides of the heat dissipation fins 52, and the two sides of the heat dissipation fins 52 form a mountain-shaped structure through the notches 521. The upper side of the heat dissipation fin 52 is recessed downward to form a first groove 522, and the lower side of the heat dissipation fin 52 is recessed upward to form a second groove 523, and the first groove 522 and the second groove 523 are arranged in a herringbone shape.

[0028] Among them, the heat dissipation groove 51 is a groove structure with an I-shaped cross-section, and the heat sink 52 is evenly arranged on the heat dissipation groove 51. During the braking process, the friction between the friction plate on the armature 4 and the rotor 3 will generate a large amount of heat. At this time, the heat can be quickly dissipated through the heat conduction of the heat sink 52. The design of the notch 521 and the first groove 522 and the second groove 523 on the heat sink 52 can increase the contact area between the heat sink 52 and the air, thereby improving the heat dissipation effect of the heat sink 52.

[0029] Specifically, such as Figure 2 、 Figure 5 and Figure 6 As shown, the heat dissipation mechanism 5 further includes a dustproof component 53 disposed in the heat dissipation slot 51 . The dustproof component 53 includes a positioning block 531 . A fixing frame 532 for fixing the dustproof net 533 is provided on the positioning block 531 via a guide rod 534 .

[0030] Among them, the dustproof net 533 on the fixed frame 532 is set in the heat dissipation groove 51 through the positioning block 531, so as to avoid dust accumulation inside the heat dissipation groove 51, and further prevent dust from adhering to the heat sink 52 and causing the heat dissipation effect of the heat sink 52 to be reduced. At the same time, it can achieve the protection and protection of the heat sink 52 and avoid damage to the heat sink 52 caused by collision with foreign objects.

[0031] It should be noted that a threaded end 535 is provided on the guide rod 534, and a locking nut 536 is provided on the threaded end 535 to abut against the outer surface of the dustproof net 533. A washer 537 is provided on the guide rod 534 between the positioning block 531 and the fixing frame 532. The washer 537 is cylindrical and made of rubber.

[0032] Among them, the fixed frame 532 is limited on the guide rod 534 by the locking nut 536. When the dustproof net 533 on the fixed frame 532 needs to be cleaned, the locking nut 536 is unscrewed from the threaded end 535, and the casing removes the fixed frame 532 and the dustproof net 533 from the guide rod 534, and then takes it out from the heat dissipation groove 51, which facilitates the cleaning of the dustproof net 533 and ensures that the dustproof net 533 will not be blocked during dust prevention work. The gasket 537 provided between the positioning block 531 and the fixed frame 532 can improve the stability of the fixed frame 532 and the dustproof net 533 in the heat dissipation groove 51.

[0033] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A brake for an electric pallet truck with high safety, comprising a coil seat (1) having an electromagnetic coil, an end cover (2) being detachably mounted on one end of the coil seat (1) by means of bolts, a rotor (3) being arranged in the end cover (2), and an armature (4) being arranged between the coil seat (1) and the end cover (2), characterized in that: The end cover (2) is provided with a heat dissipation mechanism (5) for dissipating heat during friction braking between the friction plate on the armature (4) and the rotor (3).

2. The brake for an electric pallet truck with high safety according to claim 1, characterized in that: The heat dissipation mechanism (5) comprises a heat dissipation groove (51) provided on the end cover (2), and at least two heat dissipation fins (52) are provided on the heat dissipation groove (51).

3. The brake for an electric pallet truck with high safety according to claim 2, characterized in that: Notches (521) are provided on both sides of the heat sink (52), and the two sides of the heat sink (52) form a mountain-shaped structure through the notches (521).

4. The brake for an electric pallet truck with high safety according to claim 3, characterized in that: The upper side of the heat sink (52) is recessed downward to form a first groove (522), and the lower side of the heat sink (52) is recessed upward to form a second groove (523), and the first groove (522) and the second groove (523) are arranged in a herringbone shape.

5. The brake for an electric pallet truck with high safety according to claim 2, characterized in that: The heat dissipation mechanism (5) further includes a dustproof component (53) arranged in the heat dissipation groove (51); The dustproof component (53) comprises a positioning block (531), and a fixing frame (532) for fixing the dustproof net (533) is provided on the positioning block (531) via a guide rod (534).

6. The brake for an electric pallet truck with high safety according to claim 5, characterized in that: The guide rod (534) is provided with a threaded end (535), and the threaded end (535) is provided with a locking nut (536) that abuts against the outer surface of the dustproof net (533).

7. The brake for an electric pallet truck with high safety according to claim 6, characterized in that: A washer (537) is sleeved on the guide rod (534) at a position between the positioning block (531) and the fixing frame (532). The washer (537) is cylindrical and made of rubber.

8. The brake for an electric pallet truck with high safety according to claim 1, characterized in that: The coil seat (1) is detachably connected to the motor housing of the transport vehicle via a flange (6).

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