Motor overload protection device

Abstract

The utility model provides a motor overload protection device, and belongs to the technical field of motors. A motor overload protection device provided by the utility model comprises a suspension beam and a limit reaction assembly, a motor is arranged on a first end of the suspension beam, the limit reaction assembly comprises a limit beam, a limit cylinder and a limit sensor, the limit beam is arranged below a second end of the suspension beam, the lower end of a cylinder body of the limit cylinder is arranged on the limit beam, and the limit sensor is arranged on the limit beam. The movable end of the limiting air cylinder is hung at the second end of the hanging beam, and the limiting sensor is arranged on a cylinder body of the limiting air cylinder and used for sensing vibration of the cylinder body of the limiting air cylinder. According to the motor overload protection device provided by the utility model, when the motor is overloaded, the motor drives the limiting beam to vibrate, the limiting air cylinder vibrates, and the limiting sensor senses that the vibration of the limiting air cylinder exceeds a specified range, an alarm is given, the motor is powered off, the response is sensitive, and the limiting sensor is set according to actual requirements.

Description

Technical Field

[0001] The utility model belongs to the technical field of motors, and in particular relates to a motor overload protection device. Background Art

[0002] Conveyor belts generally use motors to drive the drive wheels to transport materials. In actual use, the motor load may reach a critical point due to excessive weight of materials on the conveyor belt, damage to the transmission belt, or other conditions. The motor may overload, idle, or experience other problems. At this time, the motor will vibrate, or even cause overload and damage to the motor, resulting in economic losses. Therefore, an overload protection device is required. Once the motor load exceeds the specified value, the power must be turned off in time to prevent overload and damage to the motor. Commonly used conveyor belt motor overload protection devices often utilize a starter. When the motor current exceeds the set value, the motor is shut down to avoid overload. However, the starter only operates when the current exceeds the motor rated value. When the motor's operating current approaches the rated value, it cannot react in a timely manner. Utility Model Content

[0003] The purpose of the utility model is to provide a motor overload protection device, aiming to solve the problem that the motor overload protection device does not respond in time.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide a motor overload protection device, including a suspension beam and a limit reaction component, the motor is arranged on the first end of the suspension beam, the limit reaction component includes a limit beam, a limit cylinder and a limit sensor, the limit beam is arranged below the second end of the suspension beam, the lower end of the cylinder body of the limit cylinder is arranged on the limit beam, the movable end of the limit cylinder is hung on the second end of the suspension beam, the limit sensor is arranged on the cylinder body of the limit cylinder, and the limit sensor is used to sense the vibration of the cylinder body of the limit cylinder.

[0005] In one possible implementation, a suspension groove is provided at the second end of the suspension beam, and the suspension groove is provided through the upper and lower end surfaces of the suspension beam. A suspension rod is provided between the front and rear side walls of the suspension groove, and the movable end of the limiting cylinder is hung on the suspension rod.

[0006] In a possible implementation, a hanging ring is provided at the upper end of the movable end of the limiting cylinder, and the hanging ring is sleeved on the suspension rod.

[0007] In a possible implementation, the inner diameter of the hanging ring is larger than the outer diameter of the hanging rod.

[0008] In a possible implementation, limit blocks are respectively provided at both ends of the suspension rod, and outer side walls of the limit blocks are arc-shaped surfaces.

[0009] In a possible implementation, four corners of the cylinder body of the limit cylinder are respectively provided with stabilizing rods, and the limit sensor is provided on the stabilizing rods.

[0010] In a possible implementation, the limit sensors are mounted on the two groups of stabilizing rods close to the motor.

[0011] In a possible implementation, the cylinder body of the limiting cylinder is hinged to the limiting beam.

[0012] In one possible implementation, a lower hinge block is provided on the upper end surface of the limiting beam, and two groups of upper hinge plates are provided on the lower end surface of the cylinder body of the limiting cylinder. The two groups of upper hinge plates are respectively provided on the front and rear sides of the lower hinge block, and a hinge shaft is provided on the upper hinge plate, which passes through the upper hinge plate and the lower hinge block.

[0013] In a possible implementation, a support column is provided on the lower end surface of the suspension beam, and two groups of the support columns are arranged away from the limiting beam.

[0014] The beneficial effects of the motor overload protection device provided by the utility model are:

[0015] Compared with the prior art, a suspension beam and a limit reaction component are provided. The suspension beam is used to place the motor, and the motor is arranged on the first end of the suspension beam. The limit reaction component is used to monitor the vibration of the motor. The limit reaction component is arranged at the second end of the suspension beam. The limit reaction component includes a limit beam, a limit cylinder and a limit sensor. The limit beam is arranged below the second end of the suspension beam, the upper end of the limit cylinder is hung on the suspension beam, and the lower end of the limit cylinder is arranged on the limit beam. The limit sensor is arranged on the cylinder body of the limit cylinder. The limit sensor monitors the vibration of the cylinder body of the limit cylinder. The motor vibrates slightly during normal use. When the motor is overloaded, the vibration of the motor intensifies. The vibration of the motor drives the vibration of the limit beam to intensify, and then drives the vibration of the limit cylinder. When the limit sensor senses that the vibration of the limit cylinder exceeds the specified range, an alarm is issued, and the motor is powered off. The response is sensitive, and the limit sensor is set according to actual needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1A schematic front view of the structure of a motor overload protection device provided by an embodiment of the utility model;

[0018] Figure 2 A schematic diagram of the structure of the suspension groove used in the embodiment of the present utility model;

[0019] Figure 3 This is a schematic structural diagram of the right side view of the limiting beam used in an embodiment of the utility model.

[0020] In the figure: 1. Motor; 2. Suspension beam; 3. Limit beam; 4. Limit cylinder; 5. Limit sensor; 6. Suspension rod; 7. Hanging ring; 8. Limit block; 9. Stabilizing rod; 10. Lower hinge block; 11. Upper hinge plate; 12. Hinge shaft; 13. Support column. DETAILED DESCRIPTION

[0021] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0022] Please refer to Figures 1 to 3 Now, a specific embodiment of a motor overload protection device provided by the utility model is described, which includes a suspension beam 2 and a limit reaction component. The motor 1 is arranged on the first end of the suspension beam 2. The limit reaction component includes a limit beam 3, a limit cylinder 4 and a limit sensor 5. The limit beam 3 is arranged below the second end of the suspension beam 2. The lower end of the cylinder body of the limit cylinder 4 is arranged on the limit beam 3. The movable end of the limit cylinder 4 is hung on the second end of the suspension beam 2. The limit sensor 5 is arranged on the cylinder body of the limit cylinder 4. The limit sensor 5 is used to sense the vibration of the cylinder body of the limit cylinder 4.

[0023] The utility model provides a motor overload protection device, which is provided with a suspension beam 2 and a limit reaction component compared with the prior art. The suspension beam 2 is used to place the motor 1, and the motor 1 is arranged on the first end of the suspension beam 2. The limit reaction component is used to monitor the vibration of the motor 1. The limit reaction component is arranged at the second end of the suspension beam 2. The limit reaction component includes a limit beam 3, a limit cylinder 4 and a limit sensor 5. The limit beam 3 is arranged below the second end of the suspension beam 2, and the upper end of the limit cylinder 4 is hung on the suspension beam 2. The lower end of the cylinder 4 is arranged on the limit beam 3, and the limit sensor 5 is arranged on the cylinder body of the limit cylinder 4. The limit sensor 5 monitors the vibration of the cylinder body of the limit cylinder 4. The motor 1 has a slight vibration during normal use. When the motor 1 is overloaded, the vibration of the motor 1 intensifies. The vibration of the motor 1 drives the limit beam 3 to vibrate more, and then drives the limit cylinder 4 to vibrate. When the limit sensor 5 senses that the vibration of the limit cylinder 4 exceeds the specified range, it will alarm and cut off the power to the motor 1. It has a sensitive response and the limit sensor 5 is set according to actual needs.

[0024] For details, please refer to Figures 1 to 3 , including a suspension beam 2 and a limit reaction component, the suspension beam 2 is arranged on the mounting bracket of the conveyor belt, the motor 1 is arranged at the first end of the suspension beam 2, and the motor 1 is arranged along the length direction of the suspension beam 2, the limit reaction component includes a limit beam 3, a limit cylinder 4 and a limit sensor 5, the limit beam 3 is arranged perpendicular to the length direction of the suspension beam 2, the first end of the limit beam 3 is arranged on the mounting bracket of the conveyor belt, the movable end of the limit cylinder 4 is arranged upward, the lower end of the limit cylinder 4 is arranged on the limit beam 3, the upper end of the limit cylinder 4 is arranged on the second end hung on the suspension beam 2, the limit sensor 5 is arranged on the cylinder body of the limit cylinder 4, the limit sensor 5 can use a displacement sensor to monitor the displacement change of the limit cylinder 4 in real time, when the motor 1 is overloaded, the vibration of the motor 1 intensifies, and the vibration of the motor 1 drives the limit beam 3 to intensify, which in turn causes the limit cylinder 4 to vibrate more. When the limit sensor 5 senses that the vibration of the limit cylinder 4 exceeds the specified range, an alarm is issued, and the motor 1 is powered off. It has a sensitive response and is set according to actual needs.

[0025] For further information, please refer to Figures 1 to 3 The length of the limit cylinder 4 can be adjusted according to the actual installation situation.

[0026] As a specific implementation of the motor overload protection device provided by the utility model, please refer to Figures 1 to 3 The second end of the suspension beam 2 is provided with a suspension groove, which runs through the upper and lower end surfaces of the suspension beam 2. A suspension rod 6 is provided between the front and rear side walls of the suspension groove, and the movable end of the limit cylinder 4 is hung on the suspension rod 6.

[0027] For details, please refer to Figures 1 to 3The suspension groove is set at the second end of the suspension beam 2. The suspension groove is an upper and lower through groove. The suspension rod 6 is mounted between the front and rear side walls of the suspension groove. The suspension rod 6 is arranged perpendicular to the length direction of the suspension beam 2. The movable end of the limit cylinder 4 is hung on the suspension rod 6 to facilitate driving the limit cylinder 4 to vibrate.

[0028] As a specific implementation of the motor overload protection device provided by the utility model, please refer to Figures 1 to 3 The upper end of the movable end of the limit cylinder 4 is provided with a hanging ring 7, and the hanging ring 7 is sleeved on the suspension rod 6.

[0029] For details, please refer to Figures 1 to 3 The hanging ring 7 is arranged at the upper end of the movable end of the limit cylinder 4, and the hanging ring 7 is sleeved on the suspension rod 6, so that the limit cylinder 4 is hung on the suspension rod 6.

[0030] As a specific implementation of the motor overload protection device provided by the utility model, please refer to Figures 1 to 3 The inner diameter of the hanging ring 7 is larger than the outer diameter of the hanging rod 6.

[0031] For details, please refer to Figures 1 to 3 The outer diameter of the suspension rod 6 is smaller than the inner diameter of the hanging ring 7. When the motor 1 is in normal working condition, the vibration amplitude of the suspension beam 2 is small, and the suspension rod 6 will not drive the limit cylinder 4 to vibrate. When the motor 1 is overloaded, the vibration amplitude of the suspension beam 2 is large, and the suspension rod 6 drives the limit cylinder 4 to vibrate. When it exceeds the specified range set by the limit sensor 5, an alarm is issued and the motor 1 is powered off.

[0032] As a specific implementation of the motor overload protection device provided by the utility model, please refer to Figures 1 to 3 , limit blocks 8 are respectively provided at both ends of the suspension rod 6, and the outer side walls of the limit blocks 8 are arc-shaped surfaces.

[0033] For details, please refer to Figures 1 to 3 Two groups of limit blocks 8 are respectively arranged at both ends of the hanging rod 6, and the limit blocks 8 are arranged inside the hanging groove. The side of the limit block 8 away from the side wall of the hanging groove is an arc-shaped surface, which limits the hanging ring 7, and the arc-shaped surface reduces the impact on the hanging ring 7.

[0034] As a specific implementation of the motor overload protection device provided by the utility model, please refer to Figures 1 to 3 The four corners of the cylinder body of the limit cylinder 4 are respectively provided with stabilizing rods 9, and the limit sensor 5 is arranged on the stabilizing rods 9.

[0035] For details, please refer to Figures 1 to 3 The four groups of stabilizing rods 9 are respectively arranged at the four corners of the cylinder body of the limit cylinder 4, and the limit sensor 5 is arranged on the stabilizing rods 9, which is convenient for installation.

[0036] As a specific implementation of the motor overload protection device provided by the utility model, please refer to Figures 1 to 3 The limit sensor 5 is mounted on two sets of stabilizing rods 9 close to the motor 1.

[0037] For details, please refer to Figures 1 to 3 The limit sensor 5 is mounted between the two sets of stabilizing rods 9 , and the limit sensor 5 is arranged on the side of the limit cylinder 4 close to the motor 1 .

[0038] As a specific implementation of the motor overload protection device provided by the utility model, please refer to Figures 1 to 3 The cylinder body of the limiting cylinder 4 is hinged to the limiting beam 3.

[0039] For details, please refer to Figures 1 to 3 The cylinder body of the limiting cylinder 4 is hinged on the limiting beam 3 to reduce the damage to the limiting cylinder 4 caused by vibration.

[0040] As a specific implementation of the motor overload protection device provided by the utility model, please refer to Figures 1 to 3 The upper end surface of the limiting beam 3 is provided with a lower hinge block 10, and the lower end surface of the cylinder body of the limiting cylinder 4 is provided with two groups of upper hinge plates 11. The two groups of upper hinge plates 11 are respectively arranged on the front and rear sides of the lower hinge block 10. The upper hinge plate 11 is provided with a hinge shaft 12, which passes through the upper hinge plate 11 and the lower hinge block 10.

[0041] For details, please refer to Figures 1 to 3 The lower hinge block 10 is arranged on the upper end surface of the limiting beam 3, and the two groups of upper hinge plates 11 are arranged on the lower end surface of the cylinder body of the limiting cylinder 4. The two groups of upper hinge plates 11 are arranged opposite to each other and are respectively arranged on the front and rear sides of the lower hinge block 10. The hinge shaft 12 passes through the upper hinge plate 11 and the lower hinge block 10.

[0042] As a specific implementation of the motor overload protection device provided by the utility model, please refer to Figures 1 to 3 The lower end surface of the suspension beam 2 is provided with a support column 13, and the two groups of support columns 13 are arranged away from the limiting beam 3.

[0043] For details, please refer to Figures 1 to 3 The support columns 13 are used to support the suspension beam 2. There are two groups of support columns 13, one group of support columns 13 is set at the first end of the suspension beam 2, and the other group of support columns 13 is set in the middle of the suspension beam 2.

[0044] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A motor overload protection device, characterized in that: It includes a suspension beam and a limit reaction component, the motor is arranged on the first end of the suspension beam, the limit reaction component includes a limit beam, a limit cylinder and a limit sensor, the limit beam is arranged below the second end of the suspension beam, the lower end of the cylinder body of the limit cylinder is arranged on the limit beam, the movable end of the limit cylinder is hung on the second end of the suspension beam, the limit sensor is arranged on the cylinder body of the limit cylinder, and the limit sensor is used to sense the vibration of the cylinder body of the limit cylinder.

2. A motor overload protection device according to claim 1, characterized in that: The second end of the suspension beam is provided with a suspension groove, which passes through the upper and lower end surfaces of the suspension beam. A suspension rod is provided between the front and rear side walls of the suspension groove, and the movable end of the limit cylinder is hung on the suspension rod.

3. A motor overload protection device according to claim 2, characterized in that: The upper end of the movable end of the limiting cylinder is provided with a hanging ring, and the hanging ring is sleeved on the suspension rod.

4. A motor overload protection device according to claim 3, characterized in that: The inner diameter of the hanging ring is larger than the outer diameter of the hanging rod.

5. A motor overload protection device according to claim 4, characterized in that: Limit blocks are respectively provided at both ends of the suspension rod, and the outer side walls of the limit blocks are arc-shaped surfaces.

6. A motor overload protection device according to claim 1, characterized in that: The four corners of the cylinder body of the limit cylinder are respectively provided with stabilizing rods, and the limit sensor is arranged on the stabilizing rods.

7. A motor overload protection device according to claim 6, characterized in that: The limit sensors are mounted on the two groups of stabilizing rods close to the motor.

8. The motor overload protection device according to claim 1, characterized in that: The cylinder body of the limiting cylinder is hinged to the limiting beam.

9. A motor overload protection device according to claim 8, characterized in that: The upper end surface of the limiting beam is provided with a lower hinge block, and the lower end surface of the cylinder body of the limiting cylinder is provided with two groups of upper hinge plates, which are respectively arranged on the front and rear sides of the lower hinge block. The upper hinge plates are provided with hinge shafts, which pass through the upper hinge plates and the lower hinge block.

10. The motor overload protection device according to claim 1, characterized in that: The lower end surface of the suspension beam is provided with a supporting column, and two groups of the supporting columns are arranged away from the limiting beam.

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