Explosion-proof shell assembly for servo motor

Abstract

The utility model relates to the technical field of motors, in particular to an explosion-proof shell assembly for a servo motor, which comprises an explosion-proof shell sleeved outside the servo motor and a base connected with the explosion-proof shell, a through hole penetrating through the base is arranged on the base, and the base is sleeved on a rotating shaft of the servo motor through the through hole. The base is used for packaging the servo motor in the explosion-proof shell, and the servo motor is fixedly arranged on the explosion-proof shell and / or the base. According to the utility model, the explosion-proof housing is sleeved outside the servo motor to prevent the motor from exploding in a high-temperature environment to cause harm, electric sparks are isolated, and dust and water drops are prevented from entering the motor to cause damage to the motor.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, and in particular discloses an explosion-proof shell component for a servo motor. Background Art

[0002] At present, explosion-proof motors are a type of motor that can be used in flammable and explosive places and does not generate electric sparks during operation. Explosion-proof motors are mainly used in coal mines, oil and gas, petrochemical and chemical industries. In addition, they are also widely used in textiles, metallurgy, city gas, transportation, grain and oil processing, papermaking, medicine and other sectors. As the main power equipment, explosion-proof motors are usually used to drive pumps, fans, compressors and other transmission machinery.

[0003] At present, when explosion-proof motors are used in dusty places, external dust will enter the inside of the protective casing through the heat dissipation holes. Therefore, in order to reduce the entry of dust, a filter is usually provided inside the heat dissipation holes to filter out external dust. However, after long-term use of the protective casing, more and more dust will adhere to the filter, and the dust will clog the mesh of the filter. At this time, the heat inside the protective casing is difficult to dissipate, and the energy consumed by the fan will become higher and higher, affecting the operation of the motor. For this reason, an explosion-proof motor protective casing is needed. Utility Model Content

[0004] In order to overcome the shortcomings and deficiencies in the prior art, the purpose of the utility model is to provide a motor housing that can prevent the motor from exploding in a high temperature environment and causing harm, while isolating electric sparks, preventing dust and water droplets from entering the motor and causing damage to the motor, and having strong heat dissipation performance.

[0005] To achieve the above purpose, the utility model provides an explosion-proof housing assembly for a servo motor, including an explosion-proof housing sleeved outside the servo motor, a base connected to the explosion-proof housing, a through hole penetrating the base, the base sleeved on the rotating shaft of the servo motor via the through hole, the base is used to encapsulate the servo motor in the explosion-proof housing, and the servo motor is fixedly arranged on the explosion-proof housing and / or the base. By arranging an explosion-proof housing outside the servo motor, the servo motor is prevented from exploding in a high temperature environment and causing harm, and at the same time, electric sparks are isolated to prevent dust and water droplets from entering the servo motor and causing damage.

[0006] Furthermore, the explosion-proof housing is a square barrel structure. The explosion-proof housing of the square barrel structure is compact and small in size, and is suitable for occasions with limited space. At the same time, the square barrel structure has a large surface area that is conducive to heat dissipation.

[0007] Furthermore, the base is provided with a plate body and a protrusion arranged on the plate body, the plate body is used to be fixed on the arm of the external manipulator, the protrusion is accommodated in the explosion-proof housing, and the side of the plate body close to the protrusion is used to stop and abut against the explosion-proof housing, and the protrusion abuts against the inner wall of the explosion-proof housing so that the explosion-proof housing and the base are closely matched. The tightly matched explosion-proof housing and base can effectively prevent impurities such as dust and water droplets from entering the servo motor to cause damage and affect the operation of the motor.

[0008] Furthermore, a wire hole is provided on the explosion-proof casing, and the wire hole passes through the wall of the explosion-proof casing. The positive and negative poles of the servo motor are electrically connected to the wires, and the wires pass through the wire holes to be electrically connected to an external power supply, which is convenient for powering the servo motor. The wire holes are provided to facilitate heat dissipation, thereby preventing the energy consumption of the servo motor from increasing and affecting the operation of the servo motor.

[0009] Furthermore, an annular protrusion protruding from the outer surface of the explosion-proof housing is provided around the wire hole. The annular protrusion protrudes from the outer surface of the explosion-proof housing to prevent water droplets on the outer surface of the explosion-proof housing from flowing into the servo motor through the wire hole, and at the same time restricts the movement of the wire to prevent the wire from being scratched by the edge of the explosion-proof housing.

[0010] Furthermore, the base is provided with an annular skeleton oil seal sleeved on the outer side of the rotating shaft, the outer side of the skeleton oil seal is abutted and connected with the base via a through hole, and the inner side is sleeved with the rotating shaft. The skeleton oil seal can isolate the motor from the external environment, prevent mud, dust, water vapor, etc. from invading the inside of the motor from the outside, and prevent the lubricating oil from leaking, while increasing the stability of the rotating shaft.

[0011] Furthermore, a thread is provided in the wire hole, which can facilitate the introduction and fixation of the wire and play a certain anti-loosening role, preventing the wire from moving or loosening in the device, thereby improving the reliability of the servo motor.

[0012] Furthermore, an anti-corrosion layer is provided on the outer surface of the explosion-proof housing, which enhances the anti-corrosion and wear-resistance of the explosion-proof housing, prevents the explosion-proof housing from rusting and corroding during use, and increases its service life.

[0013] Furthermore, the protrusion is provided with an annular groove, and the annular groove is provided with a sealing ring, which is used to seal the gap between the protrusion and the explosion-proof housing, and can effectively prevent impurities such as dust and water droplets from entering the servo motor to cause damage and affect the operation of the motor.

[0014] The beneficial effects of the utility model are as follows: an explosion-proof casing is arranged outside the servo motor to prevent the servo motor from exploding in a high-temperature environment and causing harm, while isolating electric sparks to prevent dust and water droplets from entering the servo motor and causing damage; the explosion-proof casing with a square barrel structure has a large surface area that is conducive to heat dissipation; the tightly matched explosion-proof casing and base can effectively prevent dust, water droplets and other impurities from entering the servo motor and causing damage; the temperature sensor detects that the servo motor temperature is too high and controls the servo motor to cut off power to prevent the servo motor from exploding or causing damage due to excessive temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of an explosion-proof housing assembly for a servo motor of the utility model;

[0016] Figure 2 This is an exploded view of an explosion-proof housing assembly for a servo motor of the utility model;

[0017] Figure 3 This is a cross-sectional view of an explosion-proof housing assembly for a servo motor of the utility model;

[0018] Figure 4 Schematic diagram of the structure of the external robot.

[0019] Reference numerals include:

[0020] 1—Servo motor 2—Rotating shaft 3—Explosion-proof housing

[0021] 4—base 5—wire hole 6—annular protrusion

[0022] 7—Skeleton oil seal 8—Reset spring 9—Plate body

[0023] 10—annular groove 11—base 12—first joint

[0024] 13—Second joint 14—Third joint 15—End effector

[0025] 16—connecting rod mechanism 17—tripod 18—first rod body

[0026] 19—Second rod DETAILED DESCRIPTION

[0027] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0028] See also Figures 1 to 4As shown, the utility model is an explosion-proof housing assembly for a servo motor, comprising an explosion-proof housing 3 sleeved outside the servo motor 1, a base 4 connected to the explosion-proof housing 3, a through hole penetrating the base 4 is provided on the base 4, the base 4 is sleeved on the rotating shaft 2 of the servo motor 1 via the through hole, the base 4 is used to encapsulate the servo motor 1 in the explosion-proof housing 3, and the servo motor 1 is fixedly arranged on the explosion-proof housing 3 and / or the base 4. By arranging the explosion-proof housing 3 outside the servo motor 1, the servo motor 1 is prevented from exploding in a high temperature environment to cause harm, and at the same time, electric sparks are isolated to prevent dust and water droplets from entering the servo motor 1 to cause damage.

[0029] When in use, the explosion-proof casing 3 is sleeved on the outside of the servo motor 1, the servo motor 1 is fixedly connected to the base 4, the rotating shaft 2 on the servo motor 1 is sleeved in the through hole of the base 4, the explosion-proof casing 3 is fixedly connected to the base 4, and the base 4 is fixedly installed on the wall of the external manipulator.

[0030] The explosion-proof housing 3 is a square barrel structure. The explosion-proof housing 3 of the square barrel structure is compact in structure and small in size, and is suitable for occasions with limited space. At the same time, the square barrel structure has a large surface area, which is conducive to heat dissipation.

[0031] The base 4 is provided with a plate body 9 and a protrusion arranged on the plate body 9. The plate body 9 is used to be fixed on the arm of the external manipulator. The protrusion is accommodated in the explosion-proof housing 3. The side of the plate body 9 close to the protrusion is used to stop and abut against the explosion-proof housing 3. The protrusion abuts against the inner wall of the explosion-proof housing 3 so that the explosion-proof housing 3 and the base 4 are closely matched. The tightly matched explosion-proof housing 3 and the base 4 can effectively prevent impurities such as dust and water droplets from entering the servo motor 1 to cause damage and affect the operation of the motor.

[0032] A wire hole 5 is provided on the explosion-proof housing 3, and the wire hole 5 passes through the wall of the explosion-proof housing 3. The positive and negative poles of the servo motor 1 are electrically connected to the wire, and the wire passes through the wire hole 5 to be electrically connected to the external power supply, which is convenient for powering the servo motor 1. The wire hole 5 is provided to facilitate heat dissipation, thereby preventing the energy consumption of the servo motor 1 from becoming higher and higher, thereby affecting the operation of the servo motor 1.

[0033] An annular protrusion 6 is provided around the wire hole 5 and protrudes from the outer surface of the explosion-proof housing 3. The annular protrusion 6 protrudes from the outer surface of the explosion-proof housing 3 to prevent water droplets on the outer surface of the explosion-proof housing 3 from flowing into the servo motor 1 from the wire hole, and at the same time restricts the movement of the wire to prevent the wire from being scratched by the edge of the explosion-proof housing 3.

[0034] The base 4 is provided with an annular skeleton oil seal 7 sleeved on the outer side of the rotating shaft 2. The outer side of the skeleton oil seal 7 is abutted and connected with the base 4 via a through hole, and the inner side is sleeved with the rotating shaft 2. The skeleton oil seal 7 can isolate the servo motor 1 from the external environment, prevent mud, dust, water vapor, etc. from invading the inside of the servo motor 1 from the outside, and prevent the lubricating oil from leaking, while increasing the stability of the rotation of the rotating shaft 2.

[0035] The wire hole 5 is provided with a thread. The thread can facilitate the introduction and fixation of the wire, and at the same time play a certain anti-loosening effect, preventing the wire from moving or loosening in the device, thereby improving the reliability of the servo motor 1.

[0036] An anti-corrosion layer is provided on the outer surface of the explosion-proof housing 3. The anti-corrosion layer enhances the anti-corrosion and wear-resistance of the explosion-proof housing 3, prevents the explosion-proof housing 3 from rusting and corroding during use, and increases the service life.

[0037] The protrusion is provided with an annular groove 10, and the annular groove 10 is provided with a sealing ring, which is used to seal the gap between the protrusion and the explosion-proof housing 3, and can effectively prevent impurities such as dust and water droplets from entering the servo motor 1 to cause damage and affect the operation of the motor.

[0038] Furthermore, the external manipulator includes a base 11, a first joint 12 rotatably arranged on the base 11, a second joint 13 rotatably arranged on the first joint 12, a third joint 14 rotatably arranged on the second joint 13, and an end effector 15 arranged on the third joint 14. Two servo motors 1 are respectively fixed to the left and right sides of the base 11 via an explosion-proof casing 3, so that the left and right sides of the base 11 are balanced in force, and the center of gravity of the entire manipulator is lowered and more stable. A servo motor 1 is used to drive the second joint 13 to rotate relative to the first joint 12, and another servo motor 1 drives the third joint 14 to move relative to the first joint 12 via a connecting rod mechanism 16. The connecting rod mechanism 16 includes a tripod 17, a first rod body 18, a second rod body 19, and a reset spring 8. The first corner portion of the tripod 17 is rotatably set on the first joint 12, the first rod body 18 is rotatably connected to the second corner portion of the tripod 17 and the output end of the servo motor 1, the second rod body 19 is rotatably connected to the third corner portion of the tripod 17 and the third joint 14, and the two ends of the reset spring 8 are respectively connected to the base 11 and the second joint 13. Two groups of reset springs 8 are provided on the external manipulator. The reset spring 8 resets and drives the second joint 13 of the manipulator to rotate, avoiding the need to set a driving mechanism to reset the second joint 13, saving manufacturing costs and energy.

[0039] Furthermore, the explosion-proof housing 3 is made of aluminum alloy. The explosion-proof housing 3 made of aluminum alloy is light in weight, high in strength, and durable. In addition, aluminum alloy has good thermal conductivity, which is convenient for heat dissipation, thereby preventing the servo motor 1 from being damaged by overheating.

[0040] When in use, the explosion-proof housing 3 is sleeved on the outside of the servo motor 1, the servo motor 1 is fixedly connected to the base 4, a skeleton oil seal 7 is provided on the base 4, the outer shaft sleeve of the skeleton oil seal 7 is connected to the base 4 via a through hole, the inner shaft sleeve is sleeved with the rotating shaft 2, a plate body 9 and a protrusion arranged on the plate body 9 are provided on the base 4, the plate body 9 is used to be fixed on the arm of the external manipulator, the protrusion is accommodated in the explosion-proof housing 3, and the side of the plate body 9 close to the protrusion is used to stop and resist the explosion-proof housing 3, the protrusion resists the inner wall of the explosion-proof housing 3 so that the explosion-proof housing 3 and the base 4 are closely matched, and a wire hole 5 is provided on the explosion-proof housing 3, and the positive and negative poles of the servo motor 1 are connected to the external power supply via a wire passing through the wire hole 5.

[0041] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An explosion-proof housing assembly for a servo motor, characterized in that: The servo motor (1) comprises an explosion-proof housing (3) sleeved outside the explosion-proof housing (3), and a base (4) connected to the explosion-proof housing (3); the base (4) is provided with a through hole penetrating the base (4); the base (4) is sleeved on the rotating shaft (2) of the servo motor (1) via the through hole; the base (4) is used to encapsulate the servo motor (1) in the explosion-proof housing (3); and the servo motor (1) is fixedly arranged on the base (4); The explosion-proof housing (3) is fixedly connected to the base (4), and the base (4) is fixedly mounted on the wall of the external manipulator; The explosion-proof housing (3) is made of aluminum alloy; A wire hole (5) is provided on the explosion-proof housing (3), the wire hole (5) passes through the wall of the explosion-proof housing (3), the positive and negative poles of the servo motor (1) are electrically connected to the wire, and the wire passes through the wire hole (5) and is electrically connected to an external power supply; An annular protrusion (6) protruding from the outer surface of the explosion-proof housing (3) is provided around the wire hole (5); The wire hole (5) is provided with a thread; The external manipulator comprises a base (11), a first joint (12) rotatably arranged on the base (11), a second joint (13) rotatably arranged on the first joint (12), a third joint (14) rotatably arranged on the second joint (13), and an end effector (15) arranged on the third joint (14); two servo motors (1) are respectively fixed to the left and right sides of the base (11) via an explosion-proof housing (3); one servo motor (1) is used to drive the second joint (13) to rotate relative to the first joint (12), and the other servo motor (1) drives the third joint (14) to move relative to the first joint (12) via a connecting rod mechanism (16); and the connecting rod mechanism (16) is used to drive the third joint (14) to move relative to the first joint (12). The structure (16) comprises a tripod (17), a first rod (18), a second rod (19), and a reset spring (8); a first corner portion of the tripod (17) is rotatably arranged on the first joint (12); the first rod (18) is rotatably connected to the second corner portion of the tripod (17) and the output end of the servo motor (1); the second rod (19) is rotatably connected to the third corner portion of the tripod (17) and the third joint (14); two ends of the reset spring (8) are respectively connected to the base (11) and the second joint (13); two sets of reset springs (8) are arranged on the external manipulator; the reset spring (8) resets and drives the second joint (13) of the manipulator to rotate; The base (4) is provided with a plate body (9) and a protrusion arranged on the plate body (9), the plate body (9) is used to be fixed on the arm of an external manipulator, the protrusion is accommodated in the explosion-proof housing (3), and a side of the plate body (9) close to the protrusion is used to stop and abut against the explosion-proof housing (3), and the protrusion abuts against the inner wall of the explosion-proof housing (3) so that the explosion-proof housing (3) and the base (4) are closely matched; The protrusion is provided with an annular groove (10), and the annular groove (10) is provided with a sealing ring, which is used to seal the gap between the protrusion and the explosion-proof housing (3).

2. The explosion-proof housing assembly for a servo motor according to claim 1, characterized in that: The explosion-proof housing (3) is a square barrel structure.

3. The explosion-proof housing assembly for a servo motor according to claim 1, characterized in that: An annular skeleton oil seal (7) is provided on the base (4) and is sleeved on the outside of the rotating shaft (2). The outside of the skeleton oil seal (7) is abutted and connected to the base (4) via a through hole, and the inside of the skeleton oil seal (7) is sleeved on the rotating shaft (2).

4. The explosion-proof housing assembly for a servo motor according to claim 1, characterized in that: An anti-corrosion layer is provided on the outer surface of the explosion-proof housing (3).

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