Motor protector of electric actuating mechanism

Abstract

The utility model discloses a motor protector for an electric actuating mechanism. The motor protector comprises a protective outer cover, a relay protector and a height adjusting mechanism, a mounting mainboard is fixedly connected to the left side of the front end of the bottom wall of the protective outer cover, a single-chip microcomputer is fixedly connected to the rear end of the upper surface of the mounting mainboard, a temperature sensor is fixedly connected to the front end of the upper surface of the mounting mainboard, and the single-chip microcomputer is bidirectionally and electrically connected with the temperature sensor; the relay protector is fixedly connected to the right end of the bottom wall of the protective outer cover; the height adjusting mechanism comprises a mounting frame and a supporting frame, the supporting frame is fixedly connected to the lower surface of the protective outer cover, and the mounting frame is slidably connected to the interior of the supporting frame. And cooling can be performed through the fan after power-off protection, so that continuous high temperature of the motor after power-off is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of electric actuators, in particular to a motor protector for electric actuators. Background Art

[0002] An electric actuator is a driving device that can provide linear or rotary motion. It uses a motor and works under a certain control signal. During use, the motor needs to be protected to avoid overload damage. Therefore, an electric actuator motor protector is needed.

[0003] Some traditional electric actuator motor protectors use thermal relays for power-off protection;

[0004] There are some problems, such as the different heights of different motors, and some traditional electric actuator motor protectors are difficult to adjust according to the size of the motor. At the same time, there is a lack of cooling for the motor after power-off protection. The motor is prone to failure to dissipate heat in time after power-off, which may cause damage to the internal structure. For this reason, we propose an electric actuator motor protector. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the existing defects and provide an electric actuator motor protector, which can adapt to various motor sizes through height adjustment and cool the motor after breakpoint protection, thereby effectively solving the problems in the background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an electric actuator motor protector, comprising a protective cover, a relay protector and a height adjustment mechanism;

[0007] Protective cover: The left side of the front end of the bottom wall is fixedly connected with a mounting mainboard, the rear end of the upper surface of the mounting mainboard is fixedly connected with a single-chip computer, the front end of the upper surface of the mounting mainboard is fixedly connected with a temperature sensor, and the single-chip computer and the temperature sensor are bidirectionally electrically connected;

[0008] Relay protector: It is fixedly connected to the right end of the bottom wall of the protective cover;

[0009] Height adjustment mechanism: It includes a mounting frame and a support frame. The support frame is fixedly connected to the lower surface of the protective outer cover. The mounting frame is slidably connected inside the support frame and can be height-adjusted to adapt to motors of various sizes. The fan can be used to cool the motor after power-off protection to prevent the motor from continuing to be at high temperature after power-off.

[0010] Furthermore, the height adjustment mechanism also includes a rack, a rotating shaft and a gear. The middle ends of the left and right walls of the support frame are fixedly connected with racks, and the front and rear walls of the mounting frame are rotatably connected with a rotating shaft. The middle end of the outer surface of the rotating shaft is fixedly sleeved with a gear, and the racks are meshed with the gears to enable height adjustment.

[0011] Furthermore, the height adjustment mechanism also includes a locking frame and a turntable. The locking frame is fixedly connected to the middle part of the front side of the mounting frame. The front end of the rotating shaft passes through the front side of the locking frame. The front end of the rotating shaft is fixedly connected to the turntable, which is convenient for the staff to make adjustments with less effort.

[0012] Furthermore, the height adjustment mechanism also includes a locking bolt, and the front sides of the turntable and the locking frame are provided with evenly distributed locking holes, and the interior of the whole formed by every two front and rear adjacent locking holes is threadedly connected with a locking bolt for locking.

[0013] Furthermore, a mounting plate is fixedly connected to the rear end of the upper surface of the protective cover, a fan is fixedly connected to the front side of the mounting plate, the input end of the fan is electrically connected to the output end of the single-chip microcomputer, and the motor can be cooled by the fan.

[0014] Furthermore, a battery is fixedly connected to the rear end of the bottom wall of the protective cover, and the output end of the battery is electrically connected to the input end of the single-chip microcomputer, so as to provide power for the device.

[0015] Furthermore, bolt connection openings are provided at four corners of the upper surface of the mounting frame to facilitate quick installation.

[0016] Compared with the prior art, the beneficial effects of the utility model are: the electric actuator motor protector has the following advantages:

[0017] 1. When the voltage is overloaded, the relay protector automatically cuts off the power and stops supplying power to the motor to avoid overload damage. At the same time, when an overload occurs, the temperature inside the protective cover rises, and the temperature sensor receives the temperature signal and sends it to the single-chip microcomputer. When the temperature is higher than the set value, the single-chip microcomputer controls the fan to start, and the fan starts to cool the motor. The single-chip microcomputer can start the fan according to the set timing to cool the motor. In this way, the motor can be automatically cooled by air when it is overloaded or the temperature is too high, and the motor can also be pre-cooled in advance at a fixed time to protect the motor.

[0018] 2. The staff can unscrew the locking bolt and rotate the turntable. The rotation of the turntable drives the shaft to rotate, the rotation of the shaft drives the gear to rotate, the gear drives the rack to move up and down, the rack drives the support frame upward, the support frame drives the protective cover upward to align it with the motor, and then reset the locking bolt to lock the rotation of the turntable. The height of the support frame can be adjusted, and the height of the protective cover and the fan can be adjusted by adjusting the height of the support frame, so that it can adapt to motors of various sizes and more complex electric execution working environments. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0020] Figure 2 It is a schematic diagram of the partial sectional structure of the left side of the utility model.

[0021] In the figure: 1 protective cover, 2 mounting main board, 3 single chip microcomputer, 4 temperature sensor, 5 relay protector, 6 battery, 7 mounting plate, 8 fan, 9 height adjustment mechanism, 91 mounting frame, 92 rack, 93 rotating shaft, 94 gear, 95 supporting frame, 96 locking frame, 97 rotating disk, 98 locking bolt. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-2 , This embodiment provides a technical solution: an electric actuator motor protector, comprising a protective cover 1, a relay protector 5 and a height adjustment mechanism 9;

[0024] Protective cover 1: The left side of the front end of the bottom wall is fixedly connected with a mounting mainboard 2, the rear end of the upper surface of the mounting mainboard 2 is fixedly connected with a single-chip microcomputer 3, the front end of the upper surface of the mounting mainboard 2 is fixedly connected with a temperature sensor 4, the single-chip microcomputer 3 and the temperature sensor 4 are bidirectionally electrically connected, the rear end of the upper surface of the protective cover 1 is fixedly connected with a mounting plate 7, the front side of the mounting plate 7 is fixedly connected with a fan 8, the input end of the fan 8 is electrically connected to the output end of the single-chip microcomputer 3, the rear end of the bottom wall of the protective cover 1 is fixedly connected with a battery 6, the output end of the battery 6 is electrically connected to the input end of the single-chip microcomputer 3, when the voltage When overloaded, the relay protector 5 automatically cuts off the power supply to the motor to avoid overload damage to the motor. At the same time, when overload occurs, the temperature inside the protective cover 1 rises, and the temperature sensor 4 receives the temperature signal and sends it to the single-chip microcomputer 3. When the temperature is higher than the set value, the single-chip microcomputer 3 controls the fan 8 to start, and the fan 8 starts to cool the motor. The single-chip microcomputer 3 can start the fan 8 according to the set timing to cool the motor. In this way, the motor can be automatically cooled by air when overloaded or the temperature is too high, and the motor can also be pre-cooled in advance at a fixed time, thereby protecting the motor;

[0025] Relay protection device 5: It is fixedly connected to the right end of the bottom wall of the protective cover 1;

[0026] Height adjustment mechanism 9: It includes a mounting frame 91 and a support frame 95, the support frame 95 is fixedly connected to the lower surface of the protective outer cover 1, the support frame 95 is slidably connected to the mounting frame 91 inside, the height adjustment mechanism 9 also includes a rack 92, a rotating shaft 93 and a gear 94, the middle ends of the left and right walls of the support frame 95 are fixedly connected to the rack 92, the rotating shaft 93 is rotatably connected between the front and rear walls of the mounting frame 91, the middle end of the outer surface of the rotating shaft 93 is fixedly sleeved with a gear 94, and the rack 92 is meshed with the gear 94, the height adjustment mechanism 9 also includes a locking frame 96 and a turntable 97, the locking frame 96 is fixedly connected to the middle part of the front side surface of the mounting frame 91, the front end of the rotating shaft 93 passes through the front side surface of the locking frame 96, and the front end of the rotating shaft 93 is fixedly connected to the turntable 97, the height adjustment mechanism 9 also includes a locking bolt 98, the turntable 97 and the locking bolt 98. The front side of the frame 96 is provided with evenly distributed locking holes, and the interior of the whole formed by every two front and rear adjacent locking holes is threadedly connected with a locking bolt 98. Bolt connection holes are provided at the four corners of the upper surface of the mounting frame 91. The staff can unscrew the locking bolt 98 and rotate the turntable 97. The rotation of the turntable 97 drives the rotating shaft 93 to rotate, and the rotation of the rotating shaft 93 drives the gear 94 to rotate. The gear 94 drives the rack 92 to move up and down, and the rack 92 drives the support frame 95 upward, and the support frame 95 drives the protective outer cover 1 upward to align it with the motor, and then resets the locking bolt 98 to lock the rotation of the turntable 97, thereby adjusting the height of the support frame 95, and adjusting the height of the protective outer cover 1 and the fan 8 by adjusting the height of the support frame 95, so that it can adapt to motors of various sizes and adapt to more complex working environments.

[0027] The working principle of the motor protector of the electric actuator provided by the utility model is as follows: during the working process, the output end of the relay protector 5 is electrically connected to the input end of the motor, and the input end of the relay protector 5 is electrically connected to the external power supply. When the voltage is overloaded, the relay protector 5 automatically cuts off the power, and stops supplying power to the motor to avoid overload damage to the motor. At the same time, when overload occurs, the temperature inside the protective cover 1 rises, and the temperature sensor 4 receives the temperature signal and sends it to the single-chip microcomputer 3. When the temperature is higher than the set value, the single-chip microcomputer 3 controls the fan 8 to start, and the fan 8 starts to cool the motor, and the single-chip microcomputer 3 can start the fan 8 according to the set timing to cool the motor by air, thereby automatically cooling the motor by air when it is overloaded or the temperature is too high. The motor can be pre-cooled at regular intervals to protect the motor. When in use, different motors have different lengths and heights. The staff can unscrew the locking bolt 98 and rotate the turntable 97. The rotation of the turntable 97 drives the shaft 93 to rotate. The rotation of the shaft 93 drives the gear 94 to rotate. The gear 94 drives the rack 92 to move up and down. The rack 92 drives the support frame 95 upward. The support frame 95 drives the protective cover 1 upward to align it with the motor, and then resets the locking bolt 98 to lock the rotation of the turntable 97. The height of the support frame 95 can be adjusted. The height of the protective cover 1 and the fan 8 can be adjusted by adjusting the height of the support frame 95, so that it can adapt to motors of various sizes and more complex working environments.

[0028] It is worth noting that the relay protection device 5 disclosed in the above embodiment can be selected from DZ47SGQR, the single chip computer 3 can be selected from STC89C52RC, the fan 8 can be selected from 12CM cooling fan, the temperature sensor 4 can be selected from DHT11, and the single chip computer 3 controls the operation of the fan 8 using the common method in the prior art.

[0029] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. Electric actuator motor protector, characterized by: It comprises a protective cover (1), a relay protector (5) and a height adjustment mechanism (9); The protective cover (1) has a mounting mainboard (2) fixedly connected to the left side of the front end of the bottom wall, a single-chip computer (3) fixedly connected to the rear end of the upper surface of the mounting mainboard (2), and a temperature sensor (4) fixedly connected to the front end of the upper surface of the mounting mainboard (2); the single-chip computer (3) and the temperature sensor (4) are bidirectionally electrically connected; Relay protector (5): fixedly connected to the right end of the bottom wall of the protective cover (1); A height adjustment mechanism (9): comprising a mounting frame (91) and a support frame (95), wherein the support frame (95) is fixedly connected to the lower surface of the protective outer cover (1), and the mounting frame (91) is slidably connected inside the support frame (95).

2. The electric actuator motor protector according to claim 1, characterized in that: The height adjustment mechanism (9) further comprises a rack (92), a rotating shaft (93) and a gear (94); the middle ends of the left and right walls of the support frame (95) are fixedly connected to the rack (92); the front and rear walls of the mounting frame (91) are rotatably connected to the rotating shaft (93); the middle end of the outer surface of the rotating shaft (93) is fixedly sleeved with a gear (94); and the rack (92) is meshingly connected to the gear (94).

3. The electric actuator motor protector according to claim 2 is characterized in that: The height adjustment mechanism (9) further comprises a locking frame (96) and a rotating disk (97); the locking frame (96) is fixedly connected to the middle portion of the front side surface of the mounting frame (91); the front end of the rotating shaft (93) passes through the front side surface of the locking frame (96); and the front end of the rotating shaft (93) is fixedly connected to the rotating disk (97).

4. The electric actuator motor protector according to claim 3 is characterized in that: The height adjustment mechanism (9) further comprises a locking bolt (98), the front side surfaces of the rotating disk (97) and the locking frame (96) are both provided with evenly distributed locking openings, and the interior of the whole formed by every two front and rear adjacent locking openings is threadedly connected with a locking bolt (98).

5. The electric actuator motor protector according to claim 1, characterized in that: A mounting plate (7) is fixedly connected to the rear end of the upper surface of the protective outer cover (1), a fan (8) is fixedly connected to the front side of the mounting plate (7), and an input end of the fan (8) is electrically connected to an output end of the single-chip computer (3).

6. The electric actuator motor protector according to claim 1, characterized in that: A storage battery (6) is fixedly connected to the rear end of the bottom wall of the protective outer cover (1), and an output end of the storage battery (6) is electrically connected to an input end of the single-chip computer (3).

7. The electric actuator motor protector according to claim 1, characterized in that: Bolt connection openings are provided at four corners of the upper surface of the mounting frame (91).

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