Protective structure for brake motor of walking mechanism of port crane

Abstract

The utility model relates to the technical field of motors, in particular to a port crane walking mechanism brake motor protection structure which comprises a brake motor and a motor protection mechanism arranged on the brake motor, the motor protection mechanism comprises a motor cooling cover, an air guide frame body and an air supply assembly, and one end of the brake motor is connected with a magnetic clutch brake. The motor cooling cover covers one end of the brake motor and the outer side of the magnetic clutch brake, the air supply assembly comprises a first fan, a second fan and a fan motor, the output end of the fan motor is connected with a rotating shaft, the rotating shaft penetrates through the first fan, one end of the rotating shaft is fixedly connected with the output end of the fan motor, and the other end of the rotating shaft is connected with the second fan. By arranging the motor protection mechanism, heat dissipation can be conducted on the brake motor and the magnetic clutch brake in time, the situation that the temperature of a coil of the brake motor is too high, and consequently the brake motor is burnt out is prevented, and therefore the good protection effect on the brake motor is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of motor protection, in particular to a protective structure for a brake motor of a port crane travel mechanism. Background Art

[0002] Gantry cranes are widely used in the port industry. The travel mechanism of the gantry crane is driven by an electric motor. Among them, the 7.5-kilowatt three-phase asynchronous variable frequency motor is the mainstream accessory of large rail cranes in port machinery. Qingdao Haixi Heavy Machinery, Shandong Port Equipment Group and other companies all use this type of motor. This type of motor is mainly used in the travel mechanism of rail cranes in conjunction with a reducer. The motor of the gantry crane travel mechanism generates a lot of heat when working, and the temperature of the motor coil rises. If the heat cannot be dissipated in time, the motor will burn out, the planetary gear of the gearbox will be deformed and the teeth will be knocked, which will directly lead to paralysis of the travel mechanism and seriously affect production operations.

[0003] The prior art often adopts the method of installing an air-guiding protective cover on the outside of the motor to dissipate the heat generated by the generator when it is working. For example, the prior art with patent number CN202321695867.4 discloses a protective sealing cover for the travel brake motor of the dock gantry crane, including a motor protective cover, a motor and a gear reducer. The motor protective cover is arranged on the outside of the motor, and a dust cover is arranged on the upper part of the motor protective cover. The dust cover is connected to the motor protective cover by a threaded connection. Since the dust cover seals the opening at the top of the motor protective cover, the heat generated by the motor when it is working cannot be dissipated in time, affecting the heat dissipation of the motor. Utility Model Content

[0004] The utility model aims to provide a protective structure for a brake motor of a port crane traveling mechanism, so as to overcome the problems existing in the prior art.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a port crane walking mechanism brake motor protection structure, the motor protection mechanism is arranged on the brake motor, the motor protection mechanism includes a motor cooling cover installed at one end of the brake motor, an air guide frame installed on one side of the motor cooling cover and an air supply assembly arranged on the inside of the air guide frame, the outer peripheral side wall of the motor cooling cover is provided with a plurality of heat dissipation holes; one end of the brake motor is connected to a magnetic clutch brake, the motor cooling cover is arranged at one end of the brake motor and the outside of the magnetic clutch brake, the air supply assembly includes a first fan, a second fan and a fan motor, the output end of the fan motor is connected to a rotating shaft, the rotating shaft passes through the first fan, one end of the rotating shaft is connected and fixed to the output end of the fan motor, and the other end of the rotating shaft is connected to the second fan.

[0006] On the basis of the above technical solution, the utility model can also be improved as follows:

[0007] Furthermore, one end of the air guide frame extends to the inside of the motor cooling cover and is provided with a mounting seat, a fan motor is installed at the center of the mounting seat, the rotating shaft is arranged horizontally, and the mounting seat is provided with multiple air inlets; the other end of the air guide frame is an open end and extends to the outside of the motor cooling cover, and the second fan is arranged at the other end of the air guide frame near the opening.

[0008] Furthermore, a plurality of heat exchange fins are arranged in a ring shape on the inner wall of the air guide frame. The plurality of heat exchange fins extend from one end of the air guide frame to the other end and are arranged around the first fan and the second fan.

[0009] Furthermore, the first fan is a vortex fan, the second fan is an axial flow fan, the first fan includes a fixed plate and a plurality of blades arranged on the fixed plate, the fixed plate is a circular plate body, a rotating shaft is arranged through the center of the fixed plate, and the plurality of blades are arranged in a ring-shaped pattern on the edge of a surface of the fixed plate facing the second fan, and one end of each blade is bent to form a curved surface and is connected to the fixed plate.

[0010] Furthermore, the air guide frame is mounted on the outer peripheral side wall of the motor cooling cover by screws, the air guide frame is arranged horizontally, and the cross section of the air guide frame is rectangular.

[0011] Furthermore, the motor protection mechanism also includes a protection cover arranged above the motor cooling cover, the protection cover is disc-shaped, made of iron or stainless steel, and fixed to the top of the motor cooling cover by welding of a rod.

[0012] Furthermore, the motor cooling cover is cylindrical and made of iron or stainless steel.

[0013] Furthermore, the plurality of heat dissipation holes are distributed in an array.

[0014] Furthermore, a plurality of heat sinks are arranged outside the body of the brake motor, and the other end of the brake motor is connected to the gear reduction box via bolts.

[0015] The beneficial effect of the utility model is that compared with the prior art, the brake motor protection structure of the port crane walking mechanism of the utility model can dissipate heat for the brake motor and the magnetic clutch brake in time by arranging a motor cooling cover installed at one end of the brake motor, an air guide frame installed on one side of the motor cooling cover, and an air supply component arranged on the inner side of the air guide frame, thereby preventing the coil temperature of the brake motor from being too high and causing the brake motor to burn out, thereby achieving a better protection effect on the brake motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1It is a structural schematic diagram of a brake motor protection structure of a port crane traveling mechanism provided by a preferred embodiment of the utility model;

[0018] Figure 2 yes Figure 1 A partial front sectional view of the brake motor protection structure;

[0019] Figure 3 yes Figure 2 An enlarged view of the air guide frame and air supply assembly in FIG.

[0020] Figure 4 yes Figure 1 Right side view of the brake motor protection structure in FIG.

[0021] Figure 5 yes Figure 4 An enlarged view of the air guide frame and the second fan;

[0022] In the figure: 10, brake motor; 11, heat sink; 12, magnetic clutch brake; 21, motor cooling cover; 210, heat dissipation hole; 22, protective cover; 23, air guide frame; 231, mounting seat; 232, air inlet; 24, air supply assembly; 241, first fan; 242, second fan; 243, fan motor; 244, rotating shaft; 245, fixing plate; 246, fan blades; 247, heat exchange plate; 30, gear reducer. DETAILED DESCRIPTION

[0023] The present invention will now be further described in detail in conjunction with the accompanying drawings and embodiments. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0024] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0026] like Figures 1 to 5 As shown, a preferred embodiment of the utility model provides a brake motor protection structure for a port crane traveling mechanism, including the motor protection mechanism being arranged on a brake motor 10 .

[0027] The motor protection mechanism includes a motor cooling cover 21 installed at one end of the brake motor 10, a protective cover 22 arranged above the motor cooling cover 21, an air guide frame 23 installed at one side of the motor cooling cover 21, and an air supply assembly 24 arranged inside the air guide frame 23. The other end of the brake motor 10 is connected to the gear reduction box 30 by bolts. A plurality of heat sinks 11 are arranged outside the body of the brake motor 10 to increase the heat dissipation area and improve the heat dissipation effect of the motor. In this embodiment, the brake motor 10 adopts a 7.5KW three-phase asynchronous variable frequency motor.

[0028] One end of the brake motor 10 is connected to a magnetic clutch brake 12, and a motor cooling cover 21 is provided at one end of the brake motor 10 and outside the magnetic clutch brake 12. The brake start function of the three-phase asynchronous variable frequency motor is mainly realized by the magnetic clutch brake 12. When the power is turned on, the electromagnet generates a large electromagnetic force to attract the armature to compress the brake spring. The two pairs of surfaces of the brake disc are separated from the pressure of the armature and the end cover plane of the brake motor 10, and the brake motor 10 can rotate flexibly. When the power is turned off, the pressure of the brake spring is applied to the armature to press the brake disc, generating a large friction braking torque, so that the rotating brake motor 10 is quickly braked to achieve accurate positioning. The magnetic clutch brake 12 is combined with the torque parameters of the brake motor 10 used before the port to adjust the magnetic parameters after power is turned on, and the plate-type spring is used at the same time. It is not easy to loosen and has strong durability. Whether the three-phase asynchronous variable frequency motor is energy-saving and reliable during braking and starting is mainly achieved by the magnetic clutch brake 12. By adjusting the power frequency of the inverter provided by the portal crane, the data error is offset, and the cost and energy consumption are greatly reduced.

[0029] The motor cooling cover 21 is cylindrical and made of iron or stainless steel. The outer side wall of the motor cooling cover 21 is provided with a plurality of heat dissipation holes 210, which are distributed in an array. The plurality of heat dissipation holes 210 are connected to the inner side of the motor cooling cover 21. Cold air enters the interior of the motor cooling cover 21 through the heat dissipation holes 210 to dissipate the heat of the brake motor 10.

[0030] The protective cover 22 is arranged above the motor cooling cover 21 and is in a disc shape to protect against rain and dust. The protective cover 22 is made of iron or stainless steel and is fixed to the top of the motor cooling cover 21 by welding of a rod body.

[0031] The air guide frame 23 is installed on the outer peripheral side wall of the motor cooling cover 21 by screws. The air guide frame 23 is horizontally arranged. The cross-section of the air guide frame 23 is rectangular. One end of the air guide frame 23 extends to the inner side of the motor cooling cover 21 and is provided with a mounting seat 231. The mounting seat 231 is provided with a plurality of air inlets 232, and the plurality of air inlets 232 face the magnetic clutch brake 12; the other end of the air guide frame 23 is an open end and extends to the outside of the motor cooling cover 21.

[0032] The air supply assembly 24 includes a first fan 241, a second fan 242 and a fan motor 243. The fan motor 243 is installed at the center of the mounting seat 231. The output end of the fan motor 243 is connected to a rotating shaft 244, which is arranged horizontally. The rotating shaft 244 passes through the first fan 241. One end of the rotating shaft 244 is connected and fixed to the output end of the fan motor 243, and the other end of the rotating shaft 244 is connected to the second fan 242. The second fan 242 is arranged at the other end of the air guide frame 23 near the opening. When the fan motor 243 drives the rotating shaft 244 to rotate, it drives the first fan 241 and the second fan 242 to rotate.

[0033] The inner wall of the air guide frame 23 is provided with a plurality of heat exchange fins 247 in a ring-shaped arrangement. The plurality of heat exchange fins 247 extend from one end of the air guide frame 23 to the other end and are arranged around the first fan 241 and the second fan 242 to cooperate with the first fan 241 and the second fan 242 to dissipate the heat generated by the brake motor 10 during operation.

[0034] In this embodiment, the first fan 241 is a vortex fan, and the second fan 242 is an axial flow fan. The first fan 241 includes a fixed plate 245 and a plurality of blades 246 arranged on the fixed plate 245. The fixed plate 245 is a circular plate body, and a rotating shaft 244 is set through the center of the fixed plate 245. The edge of the surface of the fixed plate 245 facing the second fan 242 is provided with the plurality of blades 246 arranged in a ring shape. One end of each blade 246 is bent to form a curved surface and connected to the fixed plate 245, so that when the first fan 241 rotates, the air can be transported and gathered to the center through the blades 246, so that the second fan 242 can discharge the hot air in the motor cooling cover 21 to the outside, which is conducive to improving the heat dissipation efficiency.

[0035] When the utility model is used, the brake motor 10 generates a lot of heat when working, and the fan motor 243 of the air supply assembly 24 drives the first fan 241 and the second fan 242 to rotate, and the external cold air is sucked into the motor cooling cover 21 through the heat dissipation hole 210. The sucked cold air absorbs the heat generated by the brake motor 10 when working. When the first fan 241 rotates, the air is transported and gathered toward the center through the fan blades 246, and then the second fan 242 discharges the hot air in the motor cooling cover 21 to the outside. The multiple heat exchange fins 247 on the inner wall of the air guide frame 23 cooperate with the first fan 241 and the second fan 242 to discharge the heat generated by the brake motor 10 when working to the outside.

[0036] Compared with the prior art, the brake motor protection structure of the travel mechanism of a port crane of the utility model can dissipate heat for the brake motor 10 and the magnetic clutch brake 12 in time by providing a motor cooling cover 21 installed at one end of the brake motor 10, an air guide frame 23 installed on one side of the motor cooling cover 21, and an air supply assembly 24 provided on the inner side of the air guide frame 23, thereby preventing the coil temperature of the brake motor 10 from being too high and causing the brake motor 10 to burn out, thereby achieving better protection effect on the brake motor 10.

[0037] Any details not mentioned in the above specific embodiments of the present invention belong to the known technologies in the art and can be implemented with reference to the known technologies.

[0038] The above is based on the ideal embodiment of the utility model. Through the above description, relevant personnel can make various changes and modifications without deviating from the technical concept of the utility model. The technical scope of this utility model is not limited to the content in the specification, and the technical scope must be determined according to the scope of the claims.

Claims

1. A protective structure for a brake motor of a port crane travel mechanism, wherein the motor protective mechanism is arranged on the brake motor, and is characterized in that: The motor protection mechanism includes a motor cooling cover installed on one end of the brake motor, an air guide frame installed on one side of the motor cooling cover, and an air supply assembly arranged on the inside of the air guide frame. The outer peripheral side wall of the motor cooling cover is provided with a plurality of heat dissipation holes; one end of the brake motor is connected to a magnetic clutch brake, the motor cooling cover is arranged on one end of the brake motor and on the outside of the magnetic clutch brake, the air supply assembly includes a first fan, a second fan and a fan motor, the output end of the fan motor is connected to a rotating shaft, the rotating shaft passes through the first fan, one end of the rotating shaft is connected and fixed to the output end of the fan motor, and the other end of the rotating shaft is connected to the second fan.

2. The protective structure for the brake motor of the harbor crane traveling mechanism according to claim 1 is characterized in that: One end of the air guide frame extends to the inside of the motor cooling cover and is provided with a mounting seat, a fan motor is installed in the center of the mounting seat, the rotating shaft is arranged horizontally, and the mounting seat is provided with multiple air inlets; the other end of the air guide frame is an open end and extends to the outside of the motor cooling cover, and the second fan is arranged at the other end of the air guide frame near the opening.

3. The protective structure for the brake motor of the traveling mechanism of a port crane according to claim 2 is characterized in that: The inner wall of the air guide frame is provided with a plurality of heat exchange fins arranged in a ring shape. The plurality of heat exchange fins extend from one end of the air guide frame to the other end and are arranged around the first fan and the second fan.

4. The protective structure for the brake motor of the traveling mechanism of a port crane according to claim 3 is characterized in that: The first fan is a vortex fan, and the second fan is an axial flow fan. The first fan includes a fixed plate and a plurality of blades arranged on the fixed plate. The fixed plate is a circular plate body, and a rotating shaft is arranged through the center of the fixed plate. The edge of the surface of the fixed plate facing the second fan is provided with the plurality of blades arranged in a ring shape, and one end of each blade is bent to form a curved surface and is connected to the fixed plate.

5. The protective structure for the brake motor of the traveling mechanism of a port crane according to claim 4 is characterized in that: The air guide frame is installed on the outer peripheral side wall of the motor cooling cover by screws. The air guide frame is arranged horizontally, and the cross section of the air guide frame is rectangular.

6. The protective structure for the brake motor of the traveling mechanism of a port crane according to claim 5 is characterized in that: The motor protection mechanism also includes a protection cover arranged above the motor cooling cover. The protection cover is disc-shaped, made of iron or stainless steel, and is fixed to the top of the motor cooling cover by welding of a rod body.

7. The protective structure for the brake motor of the traveling mechanism of a port crane according to claim 6 is characterized in that: The motor cooling cover is cylindrical and made of iron or stainless steel.

8. The protective structure for the brake motor of the traveling mechanism of a port crane according to claim 7 is characterized in that: The plurality of heat dissipation holes are distributed in an array.

9. The protective structure for the brake motor of the harbor crane traveling mechanism according to claim 8 is characterized in that: A plurality of heat sinks are arranged outside the body of the brake motor, and the other end of the brake motor is connected to the gear reduction box through bolts.

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