Low-voltage motor protection device

Abstract

The utility model discloses a low-voltage motor protection device, and the size of the protection device is changed through three fixed plates, thereby enabling the protection device to be adaptive to motors of various sizes. Heat dissipation holes in the other two sides, perpendicular to one side of the output shaft, of the protection cover are used for ensuring that the overall temperature of the motor is in a proper environment; the motor is ensured not to be damaged or loosened by strong vibration generated by the motor through the cushioning assembly on the inter-plate connecting piece; and a waterproof and anticorrosive insulating layer is coated outside the device, so that the service life of the low-voltage motor protection device is prolonged, and the life safety of workers is protected.

Description

Technical Field

[0001] The utility model relates to the technical field of motor protection, in particular to a low-voltage motor protection device. Background Art

[0002] A motor is a device that converts electrical energy into kinetic energy. A low-voltage electric motor is a type of motor. It works in a low-voltage environment and is suitable for different working environments. Its principle is the same as that of a motor. It also uses the magnetic field generated by the electric current. During operation, it can transmit a rotational motion. By connecting an external device to the rotating part, the rotational motion can be transmitted to the outside world, thereby causing the external mechanical structure to rotate, thereby achieving the purpose of driving.

[0003] With the improvement of industrial automation and the wide application of motors, the demand for low-voltage motor protection devices is also increasing. Existing motor protection devices are generally welded, which is inconvenient to disassemble. If they are fixed with bolts, the bolts are not convenient to disassemble, and because the motor will produce a sharp vibration effect when working, it will endanger the tightness of the internal structure of the motor. Therefore, we make improvements and propose a low-voltage motor protection device. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] In view of the above problems existing in the existing low-voltage motor protection device, the present utility model is proposed.

[0006] Therefore, the purpose of the utility model is to provide a low-voltage motor protection device, which can easily and conveniently disassemble and assemble the protective cover, is simple and convenient to operate, saves time and effort, greatly improves the disassembly and assembly efficiency of the motor, and can effectively reduce the vibration generated by the motor.

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions: a low-voltage motor protection device, including a base, a motor body and a protective cover, characterized in that: the base is composed of an upper plate and a lower plate, and four cylindrical through holes in square distribution are evenly arranged at the four corners of the two plates; the upper plate and the lower plate are connected by an inter-plate connecting piece, and both ends of the inter-plate connecting piece are cylindrical objects that can be tightly welded into the cylindrical through holes; the middle part of the inter-plate connecting piece is a shock-absorbing component; three fixed plates that are exactly the same except for the placement direction and position are arranged on the upper side of the upper plate, and an inverted trapezoidal sliding block is arranged at the bottom of the fixed plate; the upper plate Four guide rails are provided, and the inner bottom edges of the sliding blocks are rounded and embedded in the guide rails, and can slide along the extension direction of the guide rails; the guide rails are embedded in the upper plate; the motor body is placed on the base, and is located between the three fixed plates; the protective cover is provided on the base, and is a hollow cover structure with an opening at the bottom; an inverted trapezoidal protrusion is provided at the bottom of the side of the protective cover away from the output shaft, and the protrusion can fit with the guide rail and the bottom edge facing the output shaft of the motor is rounded; an axis opening is provided on one lateral side of the protective cover, and the axis opening passes through the bottom surface of the protective cover, and the output shaft of the motor body is located in the axis opening.

[0008] As a preferred solution described in the utility model, wherein: the lower plate is provided with four anti-skid pads, the anti-skid pads are respectively arranged at the bottom of the lower plate in a rectangular distribution, the anti-skid pads are cylindrical block structures, and are made of vulcanized rubber.

[0009] As a preferred solution of the low-voltage motor protection device of the utility model, the outer layer of the protection cover includes an insulating, waterproof and anti-corrosion layer made of polyvinyl chloride and polytetrafluoroethylene, which is used to ensure that the device is not affected by moisture, resist external chemical corrosion, and prevent motor leakage.

[0010] As a preferred solution of the low-voltage motor protection device of the utility model, multiple heat dissipation holes are arranged on both sides of the side where the vertical shaft opening of the protective cover is located, so as to prevent the motor from overheating due to the closure of the protective cover.

[0011] As a preferred solution of the low-voltage motor protection device of the utility model, the upper plate is embedded with a guide rail, which is closely combined with the inverted trapezoidal slider of the fixed plate, and can be applied to motors of various sizes, and the position of the fixed plate can be adjusted at will.

[0012] As a preferred solution of the low-voltage motor protection device of the utility model, there are multiple evenly distributed nodes in the guide rail to ensure that the fixing plate will not slide randomly due to motor vibration, causing the motor to be unfixed.

[0013] Beneficial effects of the utility model:

[0014] 1. The utility model can ensure that the device is less susceptible to external chemical corrosion and moisture by applying an insulating, waterproof and anti-corrosion layer made of polyvinyl chloride and polytetrafluoroethylene on the surface, thereby extending the life of the device and protecting the personal safety of the staff.

[0015] 2. The utility model reduces the vibration generated by the motor itself after starting by using a shock-absorbing component between the upper and lower plates, thereby preventing the internal structure of the motor from being damaged due to long-term vibration.

[0016] 3. The fixed plate and the upper plate are connected by a sliding block and a sliding rail, so that the fixed plate can move freely, so that motors of various sizes can be adapted to the device.

[0017] 4. There are three fixing plates, which can be freely installed or removed according to actual conditions, and are installed on the other three sides of the motor body that are vertical and away from the output shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0020] Figure 2 It is a schematic diagram of the overall rear view structure of the utility model.

[0021] Figure 3 This is a schematic diagram of the structure without a protective cover of the utility model.

[0022] Figure 4 This is a schematic diagram of the base structure of the utility model.

[0023] Figure 5 It is a schematic diagram of the bottom surface structure of the base of the utility model.

[0024] Figure 6 This is a schematic diagram of the protective cover structure of the utility model.

[0025] Figure 7 This is a schematic diagram of the structure of the inter-plate connecting piece of the utility model.

[0026] Figure 8 This is a schematic diagram of the fixed plate structure of the utility model. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0030] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0031] Example 1

[0032] Reference Figures 1 to 8, which is the first embodiment of the utility model, provides a low-voltage motor protection device, the device includes a base 100, the base 100 is composed of an upper plate 101 and a lower plate 102, the four corners of the two plates are evenly provided with four square-distributed cylindrical through holes 103; the upper plate 101 and the lower plate 102 are connected by an inter-plate connecting member 105, both ends of the inter-plate connecting member 105 are cylindrical objects 104, which can be embedded in the cylindrical through holes 103 and tightly connected, the cylindrical The object 104 is connected to the cylindrical through hole 103 by welding; the middle part of the inter-plate connecting piece 105 is a shock-absorbing component 106; three completely identical fixed plates 107 are arranged on the upper side of the upper plate 101, and an inverted trapezoidal sliding block 108 is arranged in the middle below the fixed plate 107; the upper plate 101 is provided with four guide rails 109, and the long bottom edge of one inner side of the inverted trapezoidal sliding block 108 is rounded and embedded in the guide rail 109 and can slide along it; the guide rail 109 is embedded in the upper plate 101. The motor body 200 is arranged on the base 100, and the motor body 200 is located between the three fixing plates 107; the protective cover 300 is arranged on the base 100, and the protective cover 300 is a hollow cover structure with an opening at the bottom, and an inverted trapezoidal protrusion 301 is arranged at the bottom of the protective cover 300, and the protrusion 301 can fit with the guide rail 109; a shaft opening 302 is arranged on one lateral side of the protective cover 300, and the shaft opening 302 passes through the bottom surface of the protective cover 300, and the output shaft of the motor body 200 is located in the shaft opening 302.

[0033] Specifically, a plurality of nodes 110 are evenly arranged inside the guide rail 109 to prevent the inverted trapezoidal slider 108 from sliding randomly due to vibration generated after the motor is started.

[0034] Additionally, the exterior of the protective cover 300 is coated with an insulating, waterproof, and anti-corrosion layer 303 made of polyvinyl chloride and polytetrafluoroethylene to ensure that the device is not affected by moisture, resist external chemical corrosion, and prevent the motor from leaking electricity.

[0035] Furthermore, a plurality of heat dissipation holes 304 are provided on both sides of the side where the vertical shaft opening 302 of the protective cover 300 is located, so as to prevent the motor from overheating due to long-term operation.

[0036] Considering that the motor will generate strong vibration after starting, the base 100 also includes an anti-skid pad 111; four anti-skid pads 111 are arranged, and the four anti-skid pads 111 are arranged in a rectangular shape at the bottom of the lower plate 102. The anti-skid pads 111 are cylindrical block structures and are made of vulcanized rubber.

[0037] During use, the base 100 is placed on a stable and solid surface, the motor is placed in the middle of the base 100, and the fixing plate 107 is adjusted to fix it firmly.

[0038] Beneficial effects of the utility model:

[0039] 1. The three fixing plates 107 can be adjusted at will according to motors of different sizes to firmly fix the motor, thus solving the problem that various low-voltage motor protection devices in the prior art are only applicable to motors of one size;

[0040] 2. By using the shock-absorbing component between the upper and lower plates, the vibration generated by the motor itself after starting can be reduced, thereby preventing the internal structure of the motor from being damaged due to long-term vibration.

[0041] 3. The outer surface of the protective cover 300 is coated with an insulating waterproof and anti-corrosion layer 303, which is made of polyvinyl chloride and polytetrafluoroethylene, and is used to ensure that the device is not affected by moisture, resist external chemical corrosion, and prevent the motor from leaking electricity, thereby ensuring the personal safety of the staff and extending the service life of the motor.

[0042] 4. There are three fixing plates, which can be freely installed or removed according to actual conditions, and are installed on the other three sides of the motor body that are vertical and away from the output shaft.

[0043] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A low-voltage motor protection device, comprising a base (100), a motor body (200) and a protection cover (300), characterized in that: The base (100) is composed of an upper plate (101) and a lower plate (102), and four cylindrical through holes (103) are evenly arranged at the four corners of the two plates in a square shape; the upper plate (101) and the lower plate (102) are connected by an inter-plate connecting member (105), and both ends of the inter-plate connecting member (105) are cylindrical objects (104) that can be tightly welded into the cylindrical through holes (103); the middle part of the inter-plate connecting member (105) is a shock absorbing component (106); three fixed plates (107) that are completely the same except for the placement direction and position are arranged on the upper side of the upper plate (101), and an inverted trapezoidal sliding block (108) is arranged at the bottom of the fixed plate (107); the upper plate (101) is provided with four guide rails (109), and the inner bottom edges of the sliding blocks (108) are all rounded and embedded in the guide rails (109), and can slide along the extension direction of the guide rail (109); the guide rail (109) is embedded in the upper plate (101); the motor body (200) is placed on the base (100) and is located between the three fixing plates (107); the protective cover (300) is arranged on the base (100) and is a hollow cover structure with an opening at the bottom; the bottom of the protective cover (300) away from the output shaft has an inverted trapezoidal protrusion (301), the protrusion (301) can fit with the guide rail (109) and the bottom edge facing the motor output shaft is rounded; the protective cover (300) is arranged on one lateral side with an axis opening (302), the axis opening (302) passes through the bottom surface of the protective cover (300), and the output shaft of the motor body (200) is placed in the axis opening (302).

2. The low voltage motor protection device according to claim 1, characterized in that: It also includes an insulating waterproof and anti-corrosion layer (303); the outer surface of the protective cover (300) is coated with the insulating waterproof and anti-corrosion layer (303), which is made of polyvinyl chloride and polytetrafluoroethylene.

3. The low voltage motor protection device according to claim 2, characterized in that: A plurality of heat dissipation holes (304) are arranged on the other two sides of the side where the vertical shaft opening (302) of the protective cover (300) is located.

4. The low voltage motor protection device according to claim 3, characterized in that: A plurality of nodes (110) are evenly arranged inside the guide rail (109).

5. The low voltage motor protection device according to claim 4, characterized in that: There are three fixing plates (107), which are installed on the other three sides except the side of the shaft opening (302).

6. The low voltage motor protection device according to claim 5, characterized in that: It also includes an anti-skid pad (111); four anti-skid pads (111) are provided, and the four anti-skid pads (111) are arranged in a rectangular distribution at the bottom of the lower plate (102); the anti-skid pads (111) are cylindrical block structures and are made of vulcanized rubber.

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