Oil-cooled asynchronous motor

Abstract

The utility model provides an oil-cooled asynchronous motor, which relates to the technical field of oil-cooled asynchronous motors and comprises a motor body. The motor body is provided with a motor protection shell in the front-back direction, a trapezoidal block with a front-back penetrating threaded hole is arranged on the left side of the top of the front end of the motor protection shell, an oil injection hole is formed behind the trapezoidal block of the motor protection shell, and an annular groove with threads is formed in the inner circumference of the top of the oil injection hole of the motor protection shell. An anti-opening rotation stopping column in the front-back direction is installed in a trapezoidal block of the motor protection shell, and threads are formed in the outer circumference of the anti-opening rotation stopping column, so that the anti-opening rotation stopping column is conveniently installed on the motor protection shell through the threads, and the anti-opening rotation stopping column is conveniently inserted into a semicircular groove of the oil hole sealing cover to stop rotation of the oil hole sealing cover; the problems that the sealing cover of the oil filling hole is not provided with any rotation stopping measures and is easy to rotate and open by non-staff, and rotation stopping measures are inconvenient to be added on a motor to stop rotation and prevent opening of the sealing cover of the oil filling hole are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil-cooled asynchronous motors, in particular to an oil-cooled asynchronous motor. Background Art

[0002] An oil-cooled asynchronous motor is an electric motor that uses an oil circulation cooling system. Its working principle is similar to that of an ordinary electric motor. It mainly consists of three parts: a stator, a rotor, and a cooling system. The oil cooling system directly cools the heat source to ensure that the motor can maintain a low temperature under high load operation, thereby improving the motor's heat dissipation efficiency and performance, thereby increasing the motor's reliability and service life.

[0003] Based on the above, the inventors have found that the existing oil-cooled asynchronous motors have the following deficiencies:

[0004] 1. The oil filling hole cover does not have any anti-rotation measures, and it is easy for non-staff to rotate and open it. It is inconvenient to install anti-rotation measures on the motor to prevent the oil filling hole cover from turning and opening.

[0005] 2. The cooling oil is inside the oil-cooled asynchronous motor, and the cooling oil level inside the motor cannot be observed. It is not convenient to install a liquid level observation measure on the oil filling hole cover to determine the cooling oil level. Utility Model Content

[0006] In order to solve the above technical problems, the utility model provides an oil-cooled asynchronous motor to solve the problem that the existing oil filling hole closing cover does not have any anti-rotation measures, is easily rotated and opened by non-staff, and is inconvenient to install anti-rotation measures on the motor to prevent the oil filling hole closing cover from rotating and opening; the cooling oil is inside the oil-cooled asynchronous motor, and the cooling oil level inside the motor cannot be observed, and it is inconvenient to install liquid level observation measures on the oil filling hole closing cover to determine the cooling oil level.

[0007] The purpose and effect of the oil-cooled asynchronous motor of this utility model are achieved by the following specific technical means:

[0008] An oil-cooled asynchronous motor comprises a motor body; the motor body is provided with a motor protective shell in the front-to-back direction, a trapezoidal block with front-to-back threaded holes is provided on the left side of the top front end of the motor protective shell, an oil filling hole is provided at the rear of the trapezoidal block of the motor protective shell, a threaded annular groove is provided on the inner circumference of the top of the oil filling hole of the motor protective shell, an anti-opening and anti-rotation column in the front-to-back direction is installed inside the trapezoidal block of the motor protective shell, the outer circumference of the anti-opening and anti-rotation column is provided with threads, the front end surface of the anti-opening and anti-rotation column is provided with a regular triangular groove, and the rear end surface of the anti-opening and anti-rotation column is provided with a hemispherical head.

[0009] Furthermore, a regular hexagonal groove is provided on the bottom end surface of the liquid level observation rod, and an indicator ring groove arranged up and down is provided on the outer circumference of the liquid level observation rod.

[0010] Furthermore, a liquid level observation rod is installed in the threaded blind hole of the oil hole closing cover in the up and down directions, and a threaded column is provided on the top end surface of the liquid level observation rod.

[0011] Furthermore, a rotating force-bearing handle is installed behind the outer circumference of the upper part of the oil hole closing cover through a fixed shaft. The rotating force-bearing handle is a semi-cylindrical structure as a whole, and both ends of the rotating force-bearing handle are provided with semicircular heads with left and right through holes.

[0012] Furthermore, a threaded blind hole is provided at the center of the bottom end face of the oil hole closing cover, a flip hole is provided on the upper part of the oil hole closing cover and a semicircular groove is provided on the front of the outer circumference of the upper part of the oil hole closing cover.

[0013] Furthermore, an oil hole closing cover is installed inside the annular groove of the motor protective shell, and an annular groove with threads is opened on the outer circumference of the bottom of the oil hole closing cover.

[0014] Furthermore, a stress-bearing sealing ring is placed inside the annular groove of the motor protective shell, and the stress-bearing sealing ring is a bellows-shaped structure as a whole.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The convenient anti-opening anti-rotation column is installed on the motor protective shell through a thread, and the convenient anti-opening anti-rotation column is inserted into the semicircular groove of the oil hole closing cover to stop the oil hole closing cover from rotating, which solves the problem that the closing cover of the oil filling hole has no anti-rotation measures and is easy to be turned and opened by non-staff, and it is inconvenient to install anti-rotation measures on the motor to stop the oil filling hole closing cover from rotating and preventing it from opening.

[0017] The liquid level observation rod is conveniently installed on the oil hole closing cover through a thread, so that the cooling oil level height inside the motor body can be observed through the liquid level observation rod, which solves the problem that the cooling oil is inside the oil-cooled asynchronous motor and the cooling oil level height inside the motor cannot be observed. It is inconvenient to add a liquid level observation measure on the oil filling hole closing cover to determine the cooling oil level height. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a main structural diagram of the present utility model.

[0019] Figure 2 It is a schematic diagram of the disassembly structure of the utility model.

[0020] Figure 3 The utility model is a schematic diagram of the anti-opening anti-rotation column releasing the anti-rotation of the oil hole closing cover.

[0021] Figure 4 It is a main schematic view of the anti-opening and anti-rotation column of the utility model.

[0022] Figure 5 It is a schematic diagram of the liquid level observation rod of the utility model when viewed from above.

[0023] Figure 6 It is a bottom view schematic diagram of the oil hole sealing cover of the utility model.

[0024] In the figure: 1. Motor body; 2. Motor protective shell; 3. Anti-opening anti-rotation column; 4. Force-bearing sealing ring; 5. Oil hole closing cover; 6. Rotating force-bearing handle; 7. Liquid level observation rod. DETAILED DESCRIPTION

[0025] The embodiments of the present invention are described in further detail below with reference to the accompanying drawings and examples.

[0026] Example 1:

[0027] As attached Figure 1 To the attached Figure 6 As shown:

[0028] The utility model provides an oil-cooled asynchronous motor, comprising a motor body 1; the motor body 1 is provided with a motor protective shell 2 in the front and rear directions, which is convenient for carrying various components; a trapezoidal block with front and rear threaded holes is provided on the left side of the top front end of the motor protective shell 2, which is convenient for the anti-opening anti-rotation column 3 to be installed through threads; an oil filling hole is provided at the rear of the trapezoidal block of the motor protective shell 2, which is convenient for the liquid level observation rod 7 to be inserted into the interior; a threaded annular groove is provided on the inner circumference of the top of the oil filling hole of the motor protective shell 2, which is convenient for the installation of the force-bearing sealing ring 4 and the oil hole closing cover 5; an anti-opening anti-rotation column 3 is installed in the front and rear directions inside the trapezoidal block of the motor protective shell 2 The anti-rotation column 3 is convenient for the anti-opening anti-rotation column 3 to move back and forth through threaded engagement. The outer circumference of the anti-opening anti-rotation column 3 is provided with threads, which is convenient for installation through threads. The front end face of the anti-opening anti-rotation column 3 is provided with a regular triangle groove, which is convenient for rotation by special tools to prevent non-staff from operating. The rear end face of the anti-opening anti-rotation column 3 is provided with a hemispherical head, which is convenient for inserting into the semicircular groove of the oil hole closing cover 5 to stop the oil hole closing cover 5 from rotating. A force-bearing sealing ring 4 is placed inside the annular groove of the motor protective shell 2 to facilitate sealing. The force-bearing sealing ring 4 is a corrugated tube structure as a whole, which is convenient for the force-bearing sealing ring 4 to deform under force for sealing.

[0029] Among them, an oil hole closing cover 5 is installed inside the annular groove of the motor protective shell 2, which is convenient for closing the oil filling hole of the motor protective shell 2. A threaded annular groove is provided on the outer circumference of the bottom of the oil hole closing cover 5, which is convenient for disassembly and assembly through threads. A threaded blind hole is provided in the center of the bottom end face of the oil hole closing cover 5, which is convenient for the liquid level observation rod 7 to be installed through threads. A flip hole that runs through the left and right is provided on the upper part of the oil hole closing cover 5, which is convenient for the rotating force handle 6 to be turned over by installing it through a fixed axis. A semicircular groove that runs through the upper and lower parts is provided in the front of the outer circumference of the upper part of the oil hole closing cover 5, which is convenient for the hemispherical head of the anti-opening anti-rotation column 3 to be inserted. A rotating force handle 6 is installed on the rear of the outer circumference of the upper part of the oil hole closing cover 5 through a fixed axis, which is convenient for the rotating force handle 6 to be turned over and upright, and convenient for passing The oil hole closing cover 5 is rotated by rotating the force-bearing handle 6. The rotating force-bearing handle 6 is a semi-cylindrical structure as a whole, which is convenient for fitting with the outer circumference of the oil hole closing cover 5. Both ends of the rotating force-bearing handle 6 are provided with semicircular heads with left and right through holes, which are convenient for the rotating force-bearing handle 6 to be flipped by fixing the shaft. The threaded blind hole of the oil hole closing cover 5 is equipped with a liquid level observation rod 7 in the upper and lower directions, which is convenient for measuring the cooling oil level inside the motor body 1. The top end face of the liquid level observation rod 7 is provided with a threaded column, which is convenient for threaded installation. The bottom end face of the liquid level observation rod 7 is provided with a regular hexagonal groove, which is convenient for rotation and disassembly by tools. The outer circumference of the liquid level observation rod 7 is provided with indicator ring grooves arranged up and down, which is convenient for indicating the cooling oil level position.

[0030] The specific usage and function of this embodiment are as follows:

[0031] In the present utility model, Figure 1 As shown, the oil hole closing cover 5 is in a stopped state. At this time, the hemispherical head of the anti-opening anti-rotation column 3 is inside the semicircular groove of the oil hole closing cover 5, and the anti-opening anti-rotation column 3 needs to be rotated by a special tool that cooperates with the regular triangular groove, thereby preventing non-staff from rotating and removing the anti-opening anti-rotation column 3. As a result, the oil hole closing cover 5 cannot be rotated and removed by the anti-opening anti-rotation column 3. At the same time, the rotating force handle 6 is in a flat state, thereby preventing the rotating force handle 6 from causing obstruction. When the oil hole closing cover 5 is rotated and removed, the anti-opening anti-rotation column 3 is rotated by a special tool that cooperates with the regular triangular groove to engage with the motor protective shell 2, so that the anti-opening anti-rotation column 3 moves forward through the threaded engagement, and the hemispherical head of the anti-opening anti-rotation column 3 moves forward and disengages from the semicircular groove of the oil hole closing cover 5. The state is as shown in FIG. Figure 3As shown, the anti-opening anti-rotation column 3 releases the anti-rotation of the oil hole closing cover 5, and then the rotating force handle 6 is flipped upward and upright, and the oil hole closing cover 5 is rotated by the rotating force handle 6, so that the oil hole closing cover 5 is rotated to engage with the motor protective shell 2 threadedly, and the oil hole closing cover 5 is raised and disengaged from the annular groove of the motor protective shell 2 through the threaded engagement, and the liquid level observation rod 7 is pulled upward out of the motor body 1 through the oil hole closing cover 5, thereby completing the disassembly of the oil hole closing cover 5, and at the same time, the indicator ring groove of the liquid level observation rod 7 is observed to determine the cooling oil level position inside the motor body 1.

[0032] Example 2:

[0033] The difference from the first embodiment is that the surface of the rotating force-bearing handle 6 can also be set to a frosted surface, thereby increasing the friction between the surface of the rotating force-bearing handle 6 and the hand, preventing the rotating force-bearing handle 6 from slipping when being taken.

[0034] Example 3:

[0035] The difference from Example 1 is that the regular hexagonal groove of the liquid level observation rod 7 can also be set as a regular heptagonal groove, so that the liquid level observation rod 7 can only be rotated by a special tool that cooperates with the regular heptagonal groove, preventing non-staff from rotating and disassembling the liquid level observation rod 7.

Claims

1. An oil-cooled asynchronous motor, characterized in that: The motor body (1) comprises a motor protective shell (2) in the front-back direction, a trapezoidal block with front-back threaded holes is provided on the left side of the top front end of the motor protective shell (2), an oil filling hole is provided at the rear of the trapezoidal block of the motor protective shell (2), a threaded annular groove is provided on the inner circumference of the top of the oil filling hole of the motor protective shell (2), an anti-opening and anti-rotation column (3) in the front-back direction is installed inside the trapezoidal block of the motor protective shell (2), a thread is provided on the outer circumference of the anti-opening and anti-rotation column (3), a regular triangular groove is provided on the front end surface of the anti-opening and anti-rotation column (3), and a hemispherical head is provided on the rear end surface of the anti-opening and anti-rotation column (3).

2. The oil-cooled asynchronous motor according to claim 1, characterized in that: A stress-bearing sealing ring (4) is placed inside the annular groove of the motor protective shell (2), and the stress-bearing sealing ring (4) is a bellows-shaped structure as a whole.

3. The oil-cooled asynchronous motor according to claim 2, characterized in that: An oil hole closing cover (5) is installed inside the annular groove of the motor protective shell (2), and an annular groove with threads is provided on the outer circumference of the bottom of the oil hole closing cover (5).

4. The oil-cooled asynchronous motor according to claim 3, characterized in that: A threaded blind hole is provided at the center of the bottom end face of the oil hole closing cover (5), a flip hole is provided on the upper portion of the oil hole closing cover (5) and a semicircular groove is provided on the front portion of the outer circumference of the upper portion of the oil hole closing cover (5) and is passed through from top to bottom.

5. The oil-cooled asynchronous motor according to claim 4, characterized in that: A rotating force-bearing handle (6) is mounted behind the outer circumference of the upper portion of the oil hole closing cover (5) via a fixed shaft. The rotating force-bearing handle (6) is a semi-cylindrical structure as a whole, and both ends of the rotating force-bearing handle (6) are provided with semi-circular heads with left and right through holes.

6. The oil-cooled asynchronous motor according to claim 5, characterized in that: A liquid level observation rod (7) is installed in the threaded blind hole of the oil hole closing cover (5) in the up-down direction, and a threaded column is provided on the top end surface of the liquid level observation rod (7).

7. The oil-cooled asynchronous motor according to claim 6, characterized in that: A regular hexagonal groove is provided on the bottom end surface of the liquid level observation rod (7), and an indicator ring groove arranged up and down is provided on the outer circumference of the liquid level observation rod (7).

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